/* CSS Design System for VERICON 1D */

/* Custom Properties for Light Mode (Default) */
:root {
    --bg-app: #f8fafc;
    --bg-sidebar: #ffffff;
    --bg-card: #ffffff;
    --bg-card-hover: #ffffff;
    --border-color: #e2e8f0;
    --border-focus: #ea580c;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --input-bg: #f1f5f9;
    --input-text: #0f172a;
    
    /* Brand Colors */
    --primary-gradient: linear-gradient(135deg, #ea580c 0%, #f97316 100%);
    --primary-color: #ea580c;
    --secondary-bg: #f1f5f9;
    --secondary-hover: #e2e8f0;

    /* Portal-Blau. Steht sonst hart in index.html (#3b82f6/#2563eb/#60a5fa);
       das Portal-Dock nimmt Tokens, damit die Farbe theme-fähig ist. */
    --portal-accent: #3b82f6;
    --portal-accent-strong: #2563eb;
    --portal-accent-soft: #60a5fa;
    
    /* Alert Statuses */
    --color-success: #10b981;
    --color-danger: #ef4444;
    --color-warning: #ea580c;
    --color-info: #0ea5e9;
    
    /* Layout Constants */
    --sidebar-width: 280px;
    --card-radius: 12px;
    --input-radius: 6px;
    --shadow-premium: 0 4px 20px -2px rgba(15, 23, 42, 0.05), 0 2px 8px -1px rgba(15, 23, 42, 0.03);
    --transition-smooth: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode Override */
[data-theme="dark"] {
    --bg-app: #0f172a;
    --bg-sidebar: #1e293b;
    --bg-card: #1e293b;
    --bg-card-hover: #334155;
    --border-color: #334155;
    --border-focus: #ff7a00;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --input-bg: #0f172a;
    --input-text: #f8fafc;
    
    --primary-gradient: linear-gradient(135deg, #ff7a00 0%, #ea580c 100%);
    --primary-color: #ff7a00;
    --secondary-bg: #1e293b;
    --secondary-hover: #334155;
    --shadow-premium: 0 8px 32px rgba(0, 0, 0, 0.24);
    
    /* Brighter statuses for dark mode contrast */
    --color-success: #34d399;
    --color-danger: #f87171;

    --portal-accent: #60a5fa;
    --portal-accent-strong: #3b82f6;
    --portal-accent-soft: #93c5fd;
}

/* Global Reset & Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    max-width: 100%;
    overflow-x: hidden;
    position: relative;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-app);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    transition: var(--transition-smooth);
    line-height: 1.5;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    letter-spacing: -0.02em;
}

/* App Layout Grid */
.app-container {
    margin-top: 56px;
    display: flex;
    min-height: 100vh;
}

/* Sidebar Styling */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    z-index: 10;
    transition: var(--transition-smooth);
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 32px;
}

.brand-logo {
    background: var(--primary-gradient);
    color: #ffffff;
    width: 42px;
    height: 42px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(234, 88, 12, 0.4);
}

.brand-text h1 {
    font-size: 1.25rem;
    font-weight: 800;
    line-height: 1.1;
    color: #1e3a8a;
}

[data-theme="dark"] .brand-text h1 {
    color: #38bdf8;
}

.brand-text h1 span {
    color: var(--primary-color);
    font-size: 0.9rem;
    background: rgba(234, 88, 12, 0.15);
    padding: 2px 6px;
    border-radius: 4px;
    margin-left: 2px;
}

.brand-text p {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.sidebar-section {
    margin-bottom: 28px;
}

.section-title {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 12px;
    font-weight: 700;
}

.section-help-text {
    font-size: 0.75rem;
    color: var(--text-muted);
    line-height: 1.4;
    margin-top: -6px;
    margin-bottom: 14px;
}

/* Sidebar Controls */
.form-group {
    margin-bottom: 14px;
}

.form-group label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.form-select, .form-input {
    width: 100%;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    color: var(--input-text);
    padding: 10px 12px;
    font-size: 0.875rem;
    border-radius: var(--input-radius);
    outline: none;
    transition: var(--transition-smooth);
    font-family: inherit;
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' width='16' height='16' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.form-input:focus, .form-select:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(234, 88, 12, 0.15);
}

.spec-quick-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin-top: 8px;
}

/* Sidebar Footer & Theme Toggle */
.sidebar-footer {
    margin-top: auto;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.theme-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    background-color: var(--secondary-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 10px;
    border-radius: var(--input-radius);
    cursor: pointer;
    font-weight: 500;
    font-size: 0.85rem;
    transition: var(--transition-smooth);
}

.theme-toggle-btn:hover {
    background-color: var(--secondary-hover);
}

.theme-toggle-icon {
    display: flex;
    align-items: center;
}

/* Toggle Sun/Moon display depending on theme */
[data-theme="dark"] .sun-icon { display: block; }
[data-theme="dark"] .moon-icon { display: none; }
[data-theme="light"] .sun-icon { display: none; }
[data-theme="light"] .moon-icon { display: block; }

/* Main Area Layout */
.main-content {
    flex-grow: 1;
    padding: 24px 40px;
    max-width: 100%;
    margin: 0 auto;
    width: calc(100% - var(--sidebar-width));
}

.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.header-title h1,
.header-title h2 {
    font-size: 1.75rem;
    font-weight: 700;
}

.header-title p,
.header-title .subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 4px;
}

.header-actions {
    display: flex;
    gap: 12px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 600;
    font-size: 0.875rem;
    padding: 10px 18px;
    border-radius: var(--input-radius);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition-smooth);
    font-family: inherit;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.75rem;
    border-radius: 6px;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
    border-radius: 10px;
}

.btn-primary {
    background: var(--primary-gradient);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(234, 88, 12, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 6px 20px rgba(234, 88, 12, 0.5);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: var(--secondary-bg);
    color: var(--text-primary);
    border-color: var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--secondary-hover);
}

.btn-danger {
    background-color: rgba(239, 68, 68, 0.15);
    color: var(--color-danger);
}

.btn-danger:hover {
    background-color: var(--color-danger);
    color: #ffffff;
}

.btn-success {
    background-color: rgba(16, 185, 129, 0.15);
    color: var(--color-success);
}

.btn-success:hover {
    background-color: var(--color-success);
    color: #ffffff;
}

/* Pulsing simulation button */
.btn-pulse {
    animation: btnPulse 2.5s infinite;
}

@keyframes btnPulse {
    0% {
        box-shadow: 0 0 0 0 rgba(234, 88, 12, 0.6);
    }
    70% {
        box-shadow: 0 0 0 12px rgba(234, 88, 12, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(234, 88, 12, 0);
    }
}

/* Cards System */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.card {
    background-color: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--card-radius);
    padding: 24px;
    box-shadow: var(--shadow-premium);
    transition: var(--transition-smooth);
}

.card:hover {
    background-color: var(--bg-card-hover);
    border-color: rgba(234, 88, 12, 0.2);
}

.span-2 {
    grid-column: span 2;
}

.span-3 {
    grid-column: span 3;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}

.card-title h3 {
    font-size: 1.15rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-subtitle {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 400;
}

/* Badges */
.badge {
    padding: 3px 8px;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: 6px;
    text-transform: uppercase;
}

.badge-info {
    background-color: rgba(14, 165, 233, 0.15);
    color: var(--color-info);
}

.badge-success {
    background-color: rgba(16, 185, 129, 0.15);
    color: var(--color-success);
}

.badge-warning {
    background-color: rgba(245, 158, 11, 0.15);
    color: var(--color-warning);
}

.badge-danger {
    background-color: rgba(239, 68, 68, 0.15);
    color: var(--color-danger);
}

/* Table Area Styles */
.table-card {
    display: flex;
    flex-direction: column;
}

.table-responsive {
    display: block;
    width: 100%;
    max-width: 100%;
    overflow-x: auto;
    min-height: 250px;
    max-height: 480px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--input-radius);
    margin-bottom: 16px;
    -webkit-overflow-scrolling: touch;
}

.stackup-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
    text-align: left;
}

.stackup-table th, .stackup-table td {
    padding: 12px 8px;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.stackup-table th {
    background-color: var(--input-bg);
    font-weight: 600;
    color: var(--text-secondary);
    position: sticky;
    top: 0;
    z-index: 10;
}

.stackup-table tbody tr {
    transition: var(--transition-smooth);
}

.stackup-table tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.02);
}

/* Row animations */
.table-row-fade-in {
    animation: rowFadeIn 0.3s ease-out forwards;
}

@keyframes rowFadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.table-row-fade-out {
    animation: rowFadeOut 0.25s ease-in forwards;
}

@keyframes rowFadeOut {
    from {
        opacity: 1;
        transform: scale(1);
    }
    to {
        opacity: 0;
        transform: scale(0.95);
    }
}

/* Table inputs */
.table-input-name {
    font-weight: 500;
}

.table-select-sign, .table-select-sigma {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    padding: 8px 24px 8px 6px !important;
    background-position: right 6px center;
    text-align: center;
}

.table-select-sign {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--primary-color);
}

.table-input-num {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    padding: 8px 6px !important;
    min-width: 80px;
}

.table-input-factor {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    padding: 8px 6px !important;
    min-width: 50px;
    text-align: center;
}

.cell-actions {
    display: flex;
    gap: 6px;
    justify-content: center;
}

.action-icon-btn {
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--text-muted);
    padding: 6px;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.action-icon-btn:hover {
    background-color: var(--secondary-bg);
    color: var(--text-primary);
}

.action-icon-btn.btn-delete-row:hover {
    background-color: rgba(239, 68, 68, 0.15);
    color: var(--color-danger);
}

.checkbox-custom {
    cursor: pointer;
    width: 18px;
    height: 18px;
    accent-color: var(--primary-color);
    pointer-events: auto !important;
}

.row-inactive {
    opacity: 0.45;
}

.row-inactive input:not(.checkbox-custom), .row-inactive select {
    pointer-events: none;
}

/* Sensitivity Analysis Progress Bars */
.cell-influence {
    padding: 8px 12px;
}

.influence-bar-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
}

.influence-bar-bg {
    flex-grow: 1;
    height: 6px;
    background-color: rgba(0, 0, 0, 0.08);
    border-radius: 3px;
    overflow: hidden;
    position: relative;
}

[data-theme="dark"] .influence-bar-bg {
    background-color: rgba(255, 255, 255, 0.1);
}

.influence-bar-fill {
    height: 100%;
    width: 0%;
    background: var(--primary-gradient);
    border-radius: 3px;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.influence-text {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    font-weight: 500;
    min-width: 38px;
    text-align: right;
    color: var(--text-secondary);
}

.table-summary-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 10px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.summary-item {
    font-size: 0.95rem;
}

.summary-item span {
    color: var(--text-secondary);
    margin-right: 8px;
}

.summary-item strong {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.1rem;
}

#btnApplyNominal {
    padding: 4px 8px;
    font-size: 0.75rem;
    height: 24px;
    margin-left: 8px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background-color: var(--input-bg);
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    vertical-align: middle;
    transition: var(--transition-smooth);
    font-family: inherit;
    font-weight: 500;
}

#btnApplyNominal:hover {
    background-color: var(--secondary-hover);
    color: var(--text-primary);
    border-color: var(--border-focus);
}

#btnApplyNominal.highlighted {
    background: linear-gradient(135deg, #ea580c 0%, #f43f5e 100%);
    color: #ffffff;
    border-color: transparent;
    box-shadow: 0 4px 14px rgba(244, 63, 94, 0.4);
    animation: applyPulse 1.8s infinite ease-in-out;
    font-weight: 600;
}

#btnApplyNominal.highlighted:hover {
    transform: scale(1.06) translateY(-1px);
    box-shadow: 0 6px 18px rgba(244, 63, 94, 0.6);
}

@keyframes applyPulse {
    0% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(244, 63, 94, 0.7), 0 4px 14px rgba(244, 63, 94, 0.3);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 0 0 8px rgba(244, 63, 94, 0), 0 6px 18px rgba(244, 63, 94, 0.5);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(244, 63, 94, 0), 0 4px 14px rgba(244, 63, 94, 0.3);
    }
}

#btnApplyNominal svg {
    flex-shrink: 0;
}

/* Calculation Result Cards Details */
.result-card {
    position: relative;
    overflow: hidden;
    min-height: 170px;
    display: flex;
    flex-direction: column;
}

.result-card .status-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
    background-color: var(--text-muted);
    box-shadow: 0 0 0 rgba(0, 0, 0, 0);
    transition: var(--transition-smooth);
}

/* Indicator states */
.status-pass .status-indicator {
    background-color: var(--color-success);
    box-shadow: 0 0 10px var(--color-success);
}

.status-fail .status-indicator {
    background-color: var(--color-danger);
    box-shadow: 0 0 10px var(--color-danger);
}

.status-warning .status-indicator {
    background-color: var(--color-warning);
    box-shadow: 0 0 10px var(--color-warning);
}

.result-body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: 100%;
}

.result-val {
    font-family: 'Outfit', sans-serif;
    font-size: 1.75rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 4px;
    white-space: nowrap;
}

.result-span {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
    font-weight: 500;
}

.result-limits {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    padding-top: 12px;
    margin-bottom: 4px;
    border-top: 1px solid var(--border-color);
    font-size: 0.8rem;
}

.result-limits div {
    display: flex;
    flex-direction: column;
}

.result-limits span {
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 2px;
}

.result-limits strong {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--text-primary);
    white-space: nowrap;
}

/* Chart Canvas styling */
.chart-card {
    display: flex;
    flex-direction: column;
}

.chart-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
}

.legend-item {
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
}

.legend-color {
    width: 12px;
    height: 12px;
    border-radius: 3px;
    display: inline-block;
}

.bg-primary { background: var(--primary-gradient); }
.bg-success { background-color: var(--color-success); }
.bg-danger { background-color: var(--color-danger); }

.chart-container {
    position: relative;
    height: 320px;
    width: 100%;
    margin-top: 10px;
}

/* 2D Chain Visualization Card styling */
.visualization-card {
    display: flex;
    flex-direction: column;
}

#visualization-container {
    width: 100%;
    overflow-x: auto;
    margin-top: 10px;
    background-color: var(--input-bg);
    border-radius: var(--input-radius);
    border: 1px solid var(--border-color);
    padding: 16px;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: var(--transition-smooth);
}

#visualization-container svg {
    max-width: 100%;
    height: auto;
    display: block;
    user-select: none;
}

/* Explanations Grid */
.info-card {
    background-color: rgba(79, 70, 229, 0.04);
    border: 1px solid rgba(79, 70, 229, 0.15);
}

.info-card:hover {
    background-color: rgba(79, 70, 229, 0.08);
    border-color: rgba(79, 70, 229, 0.3);
}

[data-theme="dark"] .info-card {
    background-color: rgba(234, 88, 12, 0.05);
    border-color: rgba(234, 88, 12, 0.15);
}

[data-theme="dark"] .info-card:hover {
    background-color: rgba(234, 88, 12, 0.1);
    border-color: rgba(234, 88, 12, 0.35);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 32px;
}

.info-col h5 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.info-col p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Utility alignments */
.text-center { text-align: center; }
.text-right { text-align: right; }

/* Responsive adjustments */
@media (max-width: 1100px) {
    .dashboard-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .span-3 {
        grid-column: span 2;
    }
}

@media (max-width: 860px) {
    .app-container {
        flex-direction: column;
    }
    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        border-top: none;
        padding: 20px 16px;
    }
    .main-content {
        width: 100%;
        padding: 20px 12px;
        min-width: 0;
    }
    .card {
        padding: 16px;
        min-width: 0;
    }
    .card-header {
        flex-wrap: wrap;
        gap: 12px;
    }
    .dashboard-grid {
        grid-template-columns: 1fr;
        gap: 16px;
        width: 100%;
        min-width: 0;
    }
    .tab-view {
        width: 100%;
        min-width: 0;
    }
    .span-2, .span-3 {
        grid-column: span 1;
    }
    .info-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .main-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        margin-bottom: 20px;
    }
    .header-actions {
        width: 100%;
        justify-content: space-between;
        gap: 8px;
    }
    .header-actions button {
        flex-grow: 1;
        padding: 8px 12px;
        font-size: 0.8rem;
    }
    .nav-tabs {
        gap: 8px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 4px;
        margin-bottom: 16px;
    }
    .btn-tab {
        font-size: 0.95rem;
        padding: 4px 8px;
        white-space: nowrap;
    }
    .table-responsive {
        -webkit-overflow-scrolling: touch;
    }
    .stackup-table {
        min-width: 600px;
    }
    
    /* Collapsible Sidebar Sections */
    .sidebar-section {
        border-bottom: 1px solid var(--border-color);
        padding-bottom: 12px;
        margin-bottom: 16px;
    }
    .sidebar-section:last-of-type {
        border-bottom: none;
        margin-bottom: 0;
    }
    .section-title {
        display: flex;
        justify-content: space-between;
        align-items: center;
        cursor: pointer;
        padding: 4px 0;
        margin: 0;
    }
    .section-title::after {
        content: '▼';
        font-size: 0.7rem;
        opacity: 0.5;
        transition: transform 0.2s ease;
    }
    .sidebar-section:not(.collapsed) .section-title::after {
        transform: rotate(180deg);
    }
    .sidebar-section > *:not(.section-title) {
        max-height: 500px;
        opacity: 1;
        overflow: hidden;
        transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease, margin 0.3s ease, padding 0.3s ease;
    }
    .sidebar-section.collapsed > *:not(.section-title) {
        max-height: 0 !important;
        opacity: 0 !important;
        margin-top: 0 !important;
        margin-bottom: 0 !important;
        padding-top: 0 !important;
        padding-bottom: 0 !important;
        pointer-events: none;
    }

    /* Responsive Chart & Visualization heights */
    .chart-container,
    .chart-container canvas {
        height: 300px !important;
        position: relative;
        width: 100%;
    }
    #visualization-container {
        justify-content: flex-start !important;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        padding: 12px;
    }
    #visualization-container svg {
        min-width: 500px;
        max-width: 500px;
        width: 100%;
        height: auto !important;
    }
}/* Premium Fit Presets Grid & Chips */
.fit-presets-grid {
    display: flex;
    gap: 10px;
    margin-top: 8px;
    flex-wrap: wrap;
}

.btn-fit-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px 14px;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition-smooth);
    font-family: inherit;
}

.btn-fit-chip:hover {
    background-color: var(--bg-sidebar);
    border-color: var(--primary-color);
    color: var(--text-primary);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(234, 88, 12, 0.08);
}

.btn-fit-chip svg {
    flex-shrink: 0;
    transition: var(--transition-smooth);
}

.btn-fit-chip .icon-spiel { color: var(--color-success); }
.btn-fit-chip .icon-uebergang { color: var(--color-warning); }
.btn-fit-chip .icon-press { color: var(--color-danger); }

.btn-fit-chip:hover svg {
    transform: scale(1.1);
}

/* Tab Navigation Styling */
.nav-tabs {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 8px;
}

.btn-tab {
    background: none;
    border: none;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    padding: 4px 12px;
    margin-bottom: -11px;
    border-bottom: 3px solid transparent;
    transition: var(--transition-smooth);
    font-family: 'Outfit', sans-serif;
}

.btn-tab:hover {
    color: var(--text-primary);
}

.btn-tab.active {
    color: var(--text-primary);
    border-bottom: 3px solid var(--primary-color);
    font-weight: 700;
}

/* Screen wrapper for repeating print headers (has no layout impact on screen) */
.print-layout-table {
    display: block;
    width: 100%;
    border-collapse: collapse;
    border: none;
    margin: 0;
    padding: 0;
}
.print-layout-table > thead,
.print-layout-table > tbody,
.print-layout-table > thead > tr,
.print-layout-table > tbody > tr,
.print-layout-table > thead > tr > td,
.print-layout-table > tbody > tr > td {
    display: block;
    width: 100%;
    border: none;
    padding: 0;
    margin: 0;
}

/* PDF Printing Customizations */
.print-only {
    display: none;
}

@page {
    size: A4 portrait;
    margin: 0;
}

@media print {
    .no-print,
    .sidebar,
    .main-header,
    .sidebar-footer,
    .table-actions-bottom,
    #btnApplyNominal,
    #btnCalculate,
    #themeToggle {
        display: none !important;
    }
    
    .print-only {
        display: block !important;
    }

    body {
        margin: 0 !important;
        padding: 0 10mm 15mm 10mm !important;
        background-color: #ffffff !important;
        background: #ffffff !important;
        color: #000000 !important;
        font-size: 9pt;
        line-height: 1.3;
        font-family: Arial, Helvetica, sans-serif !important;
    }

    .print-report-header {
        padding-top: 15mm !important;
    }


    svg text, text {
        font-family: Arial, Helvetica, sans-serif !important;
    }

    .app-container {
        display: block;
        background: #ffffff !important;
    }

    .main-content {
        width: 100% !important;
        padding: 0 !important;
        margin: 0 !important;
        max-width: 100% !important;
        background: #ffffff !important;
    }

    .dashboard-grid {
        display: grid !important;
        grid-template-columns: repeat(3, 1fr) !important;
        gap: 12px !important;
        background: #ffffff !important;
    }

    .span-3 {
        grid-column: span 3 !important;
    }

    .card {
        background: #ffffff !important;
        border: 1px solid #cbd5e1 !important;
        box-shadow: none !important;
        page-break-inside: avoid !important;
        break-inside: avoid !important;
        padding: 12px !important;
        border-radius: 8px !important;
    }

    .card-header {
        margin-bottom: 10px !important;
        padding-bottom: 6px !important;
        border-bottom: 1px solid #cbd5e1 !important;
    }

    .table-responsive {
        max-height: none !important;
        overflow-y: visible !important;
        margin-bottom: 8px !important;
        border: 1px solid #cbd5e1 !important;
    }

    .stackup-table {
        page-break-inside: auto !important;
    }

    .stackup-table tr {
        page-break-inside: avoid !important;
        break-inside: avoid !important;
    }

    .stackup-table th, .stackup-table td {
        padding: 6px 8px !important;
        font-size: 8.5pt !important;
        border: 1px solid #cbd5e1 !important;
    }

    .stackup-table th {
        background-color: #f1f5f9 !important;
        color: #000000 !important;
    }

    .stackup-table td {
        color: #000000 !important;
    }

    .stackup-table input, .stackup-table select {
        border: none !important;
        background: transparent !important;
        color: #000000 !important;
        padding: 0 !important;
        font-size: 8.5pt !important;
        box-shadow: none !important;
        outline: none !important;
        width: 100%;
    }

    /* Hide standard dropdown arrows in select elements */
    .stackup-table select {
        appearance: none !important;
        -webkit-appearance: none !important;
        -moz-appearance: none !important;
        background-image: none !important;
        padding-right: 0 !important;
        text-align: center;
        text-align-last: center;
    }

    /* Hide spin buttons for input type=number in print */
    .stackup-table input[type="number"]::-webkit-outer-spin-button,
    .stackup-table input[type="number"]::-webkit-inner-spin-button {
        -webkit-appearance: none;
        margin: 0;
    }
    .stackup-table input[type="number"] {
        -moz-appearance: textfield;
    }

    .table-summary-bar {
        display: none !important;
    }

    /* Print results layout - three cards side-by-side */
    .result-card {
        min-height: auto !important;
        padding: 10px !important;
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
    }

    .result-val {
        font-size: 1.1rem !important;
        margin-bottom: 2px !important;
        font-weight: 700 !important;
        white-space: normal !important;
        word-break: break-word !important;
    }

    .result-span {
        font-size: 0.75rem !important;
        margin-bottom: 6px !important;
    }

    .result-limits {
        display: grid !important;
        grid-template-columns: 1fr !important;
        gap: 2px !important;
        padding-top: 6px !important;
        margin-bottom: 0 !important;
        font-size: 0.72rem !important;
        border-top: 1px solid #cbd5e1 !important;
    }

    .result-limits strong {
        font-size: 0.78rem !important;
        white-space: normal !important;
        word-break: break-all !important;
    }

    .chart-container {
        height: 220px !important;
        margin-top: 6px !important;
    }

    .chart-container canvas {
        width: 100% !important;
        height: 100% !important;
        max-width: 100% !important;
        max-height: 100% !important;
    }

    #visualization-container {
        padding: 8px !important;
        background: none !important;
        border: 1px solid #cbd5e1 !important;
        page-break-inside: avoid !important;
        break-inside: avoid !important;
    }

    #visualization-container svg {
        width: 100% !important;
        height: auto !important;
        max-width: 100% !important;
    }

    /* Adjust legend for print */
    .legend-color {
        border: 1px solid #000;
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
    }

    /* Print headers and footers */
    .print-report-header {
        margin-bottom: 12px;
    }

    .print-header-grid {
        display: flex;
        justify-content: space-between;
        align-items: flex-start;
        gap: 12px;
    }

    .print-header-grid > div:first-child {
        flex: 1 1 auto;
        min-width: 0;
    }

    .print-header-grid > div:last-child {
        flex: 0 0 auto;
        text-align: right;
    }

    .print-header-grid h2 {
        font-size: 1.4rem !important;
        margin: 0 0 2px 0 !important;
    }

    .print-header-grid h3 {
        font-size: 0.95rem !important;
        margin: 0 !important;
        text-align: right !important;
        white-space: nowrap !important;
        hyphens: none !important;
    }


    hr {
        border: 0;
        border-top: 1px solid #cbd5e1;
        margin: 6px 0;
    }

    /* Print-specific style for progress bars & indicators */
    .status-indicator,
    .badge {
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
    }

    .influence-bar-bg {
        background-color: #f1f5f9 !important;
        border: 1px solid #cbd5e1 !important;
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
    }
    .influence-bar-fill {
        background: #f97316 !important;
        background-color: #f97316 !important;
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
    }
    .influence-text {
        color: #000000 !important;
        font-size: 8pt !important;
    }

    /* Repeating header logic for PDF print */
    .print-layout-table {
        display: table !important;
        width: 100% !important;
        border-collapse: collapse !important;
        border: none !important;
        margin: 0 !important;
        padding: 0 !important;
    }
    .print-layout-table > thead {
        display: table-header-group !important;
    }
    .print-layout-table > tbody {
        display: table-row-group !important;
    }
    .print-layout-table > thead > tr,
    .print-layout-table > tbody > tr {
        display: table-row !important;
    }
    .print-layout-table > thead > tr > td,
    .print-layout-table > tbody > tr > td {
        display: table-cell !important;
        border: none !important;
        padding: 0 !important;
        margin: 0 !important;
    }
}

/* ============================================================
   Thermische Überlastungswarnung für Werkstoffe
   ============================================================ */
.material-thermal-danger {
    border-color: var(--color-danger) !important;
    background-color: rgba(239, 68, 68, 0.08) !important;
    color: var(--color-danger) !important;
    font-weight: 600;
    animation: pulseBorder 2s infinite ease-in-out;
}

[data-theme="dark"] .material-thermal-danger {
    background-color: rgba(248, 113, 113, 0.12) !important;
}

@keyframes pulseBorder {
    0%   { box-shadow: 0 0 0 0   rgba(239, 68, 68, 0.4); }
    70%  { box-shadow: 0 0 0 6px rgba(239, 68, 68, 0);   }
    100% { box-shadow: 0 0 0 0   rgba(239, 68, 68, 0);   }
}

/* ============================================================
   Globale Funktionsmaße / Variablen & Ziel-Spezifikation (Bauraum)
   ============================================================ */

/* Global Variables Panel */
.var-card {
    transition: var(--transition-smooth);
}

.var-list-item {
    transition: var(--transition-smooth);
    animation: fadeInVar 0.3s ease-out;
}

.var-list-item:hover {
    background: var(--bg-card-hover) !important;
    border-color: var(--primary-color) !important;
}

@keyframes fadeInVar {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Variable Select & Input in Table Name Cell */
.name-cell-container {
    display: flex;
    flex-direction: column;
    width: 100%;
}

.table-select-var {
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--input-bg);
    color: var(--text-secondary);
    transition: var(--transition-smooth);
}

.table-select-var:focus {
    border-color: var(--border-focus);
    outline: none;
}

/* Locked states styling for inputs */
.form-input:disabled, .form-select:disabled {
    opacity: 0.65;
    cursor: not-allowed;
    background-color: rgba(0, 0, 0, 0.04);
}

[data-theme="dark"] .form-input:disabled, [data-theme="dark"] .form-select:disabled {
    background-color: rgba(255, 255, 255, 0.04);
}

/* ─── VERICON Pivot Dashboard & Standalone View Styles ────────────────────────── */

.hidden {
    display: none !important;
}

/* Sidebar and Main Area adjustments for Standalone Views */
.app-container.no-sidebar .sidebar {
    display: none !important;
}

.app-container.no-sidebar .main-content {
    width: 100% !important;
    max-width: 100%;
    padding: 24px 40px;
    margin: 0 auto;
}

/* Dashboard Categories and Cards Grid */
.dashboard-category-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 32px 0 16px 0;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--border-color);
}

.dashboard-tile-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.dashboard-tile {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--card-radius);
    padding: 24px;
    cursor: pointer;
    transition: var(--transition-smooth);
    min-height: 200px;
}

.dashboard-tile:hover:not(.disabled) {
    transform: translateY(-4px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-premium);
    background-color: var(--bg-card-hover);
}

.dashboard-tile.disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.dashboard-tile-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--input-bg);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    transition: var(--transition-smooth);
}

.dashboard-tile:hover:not(.disabled) .dashboard-tile-icon {
    background: var(--primary-gradient);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(234, 88, 12, 0.3);
}

/* Navigation Back Bar styling */
.btn-back-dashboard {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-smooth);
}

.btn-back-dashboard svg {
    transition: var(--transition-smooth);
}

.btn-back-dashboard:hover svg {
    transform: translateX(-4px);
}

@media (max-width: 860px) {
    .app-container.no-sidebar .main-content {
        padding: 20px;
    }
}

/* Machining calculator mode switches and info bubbles */
.mode-switch-tabs .btn-tab {
    background: transparent;
    color: var(--text-secondary);
    border: none;
    outline: none;
}

.mode-switch-tabs .btn-tab.active {
    background-color: var(--primary-color) !important;
    color: #ffffff !important;
}

[data-theme="dark"] .mode-switch-tabs .btn-tab.active {
    color: #f8fafc !important;
}

.info-bubble-btn {
    transition: var(--transition-smooth);
}

.info-bubble-btn:hover {
    opacity: 0.8;
}

.info-help-box {
    animation: fadeInVar 0.3s ease;
}

/* ─── 10-Kategorien-Grid (Tabellenbuch Metall) ─────────────────────────────── */
.dashboard-grid-10 {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
    margin-top: 20px;
    margin-bottom: 40px;
    align-items: stretch;
}

.category-card {
    position: relative;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--card-radius);
    padding: 28px;
    display: flex;
    flex-direction: column;
    min-height: 250px;
    box-shadow: var(--shadow-premium);
    transition: var(--transition-smooth);
    overflow: hidden;
    z-index: 1;
}

.category-card.coming-soon {
    opacity: 0.6;
    cursor: not-allowed;
    border-style: dashed;
}

.category-card.active {
    border-top: 4px solid var(--primary-color);
}

.category-card.active:hover {
    transform: translateY(-4px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-premium), 0 12px 24px -10px rgba(234, 88, 12, 0.2);
}

[data-theme="dark"] .category-card.active:hover {
    box-shadow: var(--shadow-premium), 0 12px 24px -10px rgba(234, 88, 12, 0.35);
}

.category-watermark {
    position: absolute;
    bottom: -12px;
    right: -4px;
    font-family: 'Outfit', sans-serif;
    font-size: 7.5rem;
    font-weight: 900;
    line-height: 1;
    color: var(--text-primary);
    opacity: 0.035;
    pointer-events: none;
    user-select: none;
    z-index: 0;
    transition: var(--transition-smooth);
}

[data-theme="dark"] .category-watermark {
    opacity: 0.05;
}

.category-card.active:hover .category-watermark {
    transform: scale(1.05);
    opacity: 0.07;
}

[data-theme="dark"] .category-card.active:hover .category-watermark {
    opacity: 0.09;
}

.category-header {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    margin-bottom: 20px;
    gap: 4px;
    z-index: 2;
}

.category-prefix {
    display: block;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    font-weight: 700;
}

.category-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.28rem;
    font-weight: 800;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.25;
}

.category-card.coming-soon .category-title {
    color: var(--text-muted);
}

.coming-soon-badge {
    position: absolute;
    top: 0;
    right: 0;
    background-color: var(--secondary-bg);
    color: var(--text-secondary);
    font-size: 0.65rem;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 9999px;
    white-space: nowrap;
    text-transform: uppercase;
    border: 1px solid var(--border-color);
}

.category-body {
    position: relative;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    justify-content: flex-start;
    z-index: 2;
    width: 100%;
}

.category-desc {
    font-size: 0.92rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin: 0;
}

.tool-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
}

.btn-tool {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
    padding: 14px 18px;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition-smooth);
    overflow: hidden;
}

.btn-tool:hover {
    background-color: var(--bg-card-hover);
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(234, 88, 12, 0.06);
    transform: translateY(-2px);
}

[data-theme="dark"] .btn-tool:hover {
    box-shadow: 0 4px 15px rgba(234, 88, 12, 0.15);
}

.tool-icon-wrapper {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-right: 12px;
    transition: var(--transition-smooth);
}

.btn-tool:hover .tool-icon-wrapper {
    transform: scale(1.06);
}

/* Tool Color Themes */
.tool-color-thermal {
    background-color: rgba(249, 115, 22, 0.08);
    color: rgb(249, 115, 22);
}
[data-theme="dark"] .tool-color-thermal {
    background-color: rgba(249, 115, 22, 0.16);
    color: rgb(253, 186, 116);
}

.tool-color-stackup {
    background-color: rgba(234, 88, 12, 0.08);
    color: rgb(234, 88, 12);
}
[data-theme="dark"] .tool-color-stackup {
    background-color: rgba(234, 88, 12, 0.16);
    color: rgb(165, 180, 252);
}

.tool-color-fits {
    background-color: rgba(139, 92, 246, 0.08);
    color: rgb(139, 92, 246);
}
[data-theme="dark"] .tool-color-fits {
    background-color: rgba(139, 92, 246, 0.16);
    color: rgb(196, 181, 253);
}

.tool-color-norms {
    background-color: rgba(14, 165, 233, 0.08);
    color: rgb(14, 165, 233);
}
[data-theme="dark"] .tool-color-norms {
    background-color: rgba(14, 165, 233, 0.16);
    color: rgb(125, 211, 252);
}

.tool-color-threads {
    background-color: rgba(37, 99, 235, 0.08);
    color: rgb(37, 99, 235);
}
[data-theme="dark"] .tool-color-threads {
    background-color: rgba(37, 99, 235, 0.16);
    color: rgb(147, 197, 253);
}

.tool-color-machining {
    background-color: rgba(16, 185, 129, 0.08);
    color: rgb(16, 185, 129);
}
[data-theme="dark"] .tool-color-machining {
    background-color: rgba(16, 185, 129, 0.16);
    color: rgb(110, 231, 183);
}

.tool-color-spritzguss {
    background-color: rgba(236, 72, 153, 0.08);
    color: rgb(236, 72, 153);
}
[data-theme="dark"] .tool-color-spritzguss {
    background-color: rgba(236, 72, 153, 0.16);
    color: rgb(247, 180, 205);
}

.tool-info {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    text-align: left;
    min-width: 0;
}

.tool-name {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.25;
}

.tool-desc {
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-top: 2px;
    font-weight: 400;
    line-height: 1.2;
}

.arrow-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: translateX(-6px);
    color: var(--primary-color);
    transition: var(--transition-smooth);
    margin-left: 8px;
    flex-shrink: 0;
}

.btn-tool:hover .arrow-icon {
    opacity: 1;
    transform: translateX(0);
}

/* Härte-Umwerter (Kapitel 04) Styles */
.tool-color-hardness {
    background-color: rgba(168, 85, 247, 0.08);
    color: rgb(168, 85, 247);
}
[data-theme="dark"] .tool-color-hardness {
    background-color: rgba(168, 85, 247, 0.16);
    color: rgb(216, 180, 254);
}

.hardness-error-msg {
    color: var(--color-danger);
    font-size: 0.75rem;
    margin-top: 4px;
    display: none;
    font-weight: 600;
}

/* Trägerbiegung (Kapitel 02) Styles */
.tool-color-bending {
    background-color: rgba(6, 182, 212, 0.08);
    color: rgb(6, 182, 212);
}
[data-theme="dark"] .tool-color-bending {
    background-color: rgba(6, 182, 212, 0.16);
    color: rgb(103, 232, 249);
}

/* TM2 Balken-Skizzierer (Kapitel 02) Styles */
.tool-color-sketcher {
    background-color: rgba(239, 68, 68, 0.08);
    color: rgb(239, 68, 68);
}
[data-theme="dark"] .tool-color-sketcher {
    background-color: rgba(248, 113, 113, 0.16);
    color: rgb(248, 113, 113);
}

/* Passfeder-Rechner (Kapitel 06) Styles */
.tool-color-keyway {
    background-color: rgba(245, 158, 11, 0.10);
    color: rgb(217, 119, 6);
}
[data-theme="dark"] .tool-color-keyway {
    background-color: rgba(251, 191, 36, 0.16);
    color: rgb(251, 191, 36);
}

.btn-sketcher-tool.active {
    background: var(--primary-gradient) !important;
    color: #ffffff !important;
    border-color: transparent !important;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.2);
}

/* Stirnrad-Assistent (Kapitel 06) Styles */
.tool-color-gear {
    background-color: rgba(234, 88, 12, 0.10);
    color: rgb(79, 70, 229);
}
[data-theme="dark"] .tool-color-gear {
    background-color: rgba(129, 140, 248, 0.16);
    color: rgb(129, 140, 248);
}

/* Kegelrad-Assistent Styles */
.tool-color-kegel {
    background-color: rgba(234, 88, 12, 0.10);
    color: rgb(194, 65, 12);
}
[data-theme="dark"] .tool-color-kegel {
    background-color: rgba(251, 146, 60, 0.16);
    color: rgb(251, 146, 60);
}

/* Kugellager-Rechner Styles */
.tool-color-bearing {
    background-color: rgba(234, 88, 12, 0.10);
    color: rgb(79, 70, 229);
}
[data-theme="dark"] .tool-color-bearing {
    background-color: rgba(129, 140, 248, 0.16);
    color: rgb(129, 140, 248);
}

/* Schrauben-Assistent Styles */
.tool-color-screw {
    background-color: rgba(16, 185, 129, 0.10);
    color: rgb(5, 150, 105);
}
[data-theme="dark"] .tool-color-screw {
    background-color: rgba(52, 211, 153, 0.16);
    color: rgb(52, 211, 153);
}

/* Hydraulik-Simulator Styles */
.tool-color-fluid {
    background-color: rgba(59, 130, 246, 0.10);
    color: rgb(37, 99, 235);
}
[data-theme="dark"] .tool-color-fluid {
    background-color: rgba(96, 165, 250, 0.16);
    color: rgb(96, 165, 250);
}

/* Segmented Control / Modern Tab System */
.segmented-control {
    display: flex;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 3px;
    gap: 2px;
    width: 100%;
}

.segmented-tab {
    flex: 1;
    text-align: center;
    border: none;
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.875rem;
    font-family: inherit;
    background: transparent;
    color: var(--text-secondary);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.segmented-tab:hover {
    color: var(--text-primary);
    background: rgba(0, 0, 0, 0.02);
}

[data-theme="dark"] .segmented-tab:hover {
    background: rgba(255, 255, 255, 0.02);
}

.segmented-tab.active {
    background: var(--bg-sidebar) !important;
    color: var(--text-primary) !important;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
}

@media (max-width: 900px) {
    .gear-top-grid {
        grid-template-columns: 1fr !important;
    }
    .gear-mesh-grid {
        grid-template-columns: 1fr !important;
    }
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}
.modal-overlay.active {
    display: flex;
}
.modal-card {
    background: var(--bg-sidebar);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    width: 90%;
    max-width: 380px;
    box-shadow: var(--shadow-premium);
    animation: modalScaleIn 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes modalScaleIn {
    from {
        transform: scale(0.95);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.input-error {
    border-color: var(--color-danger) !important;
    background-color: rgba(239, 68, 68, 0.05) !important;
}

input[readonly] {
    pointer-events: none !important;
    background-color: var(--bg-hover) !important;
    color: var(--text-secondary) !important;
    opacity: 0.8;
}

input[readonly]::-webkit-outer-spin-button,
input[readonly]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}



/* FluidSIM Library Styles */
.fluidsim-sidebar details > summary {
    list-style: none;
    cursor: pointer;
    font-size: 12px;
    padding: 3px 0 3px 20px;
    position: relative;
    user-select: none;
    background-color: #e6ebf5;
    border-bottom: 1px solid #d0d7e5;
    border-top: 1px solid #fff;
}
.fluidsim-sidebar details > summary::-webkit-details-marker {
    display: none;
}
.fluidsim-sidebar details > summary::before {
    content: '+';
    display: inline-block;
    width: 10px;
    height: 10px;
    line-height: 9px;
    text-align: center;
    border: 1px solid #777;
    background: #fff;
    color: #000;
    font-size: 10px;
    position: absolute;
    left: 4px;
    top: 5px;
    font-family: monospace;
}
.fluidsim-sidebar details[open] > summary::before {
    content: '-';
}

/* Category indentations */
.fs-category > summary {
    font-weight: bold;
    padding-left: 20px;
}
.fs-subcategory > summary {
    padding-left: 35px;
    background-color: #edf1f7;
}
.fs-subcategory > summary::before {
    left: 19px;
}
.fs-subsubcategory > summary {
    padding-left: 50px;
    background-color: #f4f6fa;
}
.fs-subsubcategory > summary::before {
    left: 34px;
}

.fs-palette {
    background: #fff;
    border-bottom: 1px solid #ccc;
}
.preset-btn:hover { border-color: var(--primary-color) !important; transform: translateY(-2px); box-shadow: var(--shadow-sm); }

/* --- Workspace-Cockpit Styles --- */
.cockpit-hero {
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(248, 250, 252, 0.9) 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--card-radius);
    padding: 24px;
    margin-bottom: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    box-shadow: var(--shadow-premium);
}
[data-theme="dark"] .cockpit-hero {
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(30, 41, 59, 0.9) 100%);
}
.cockpit-hero h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 4px;
}
.cockpit-hero p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}
.cockpit-search-wrapper {
    position: relative;
    max-width: 380px;
    width: 100%;
}
.cockpit-search-input {
    width: 100%;
    padding: 12px 16px 12px 42px;
    border-radius: var(--input-radius);
    border: 1px solid var(--border-color);
    background-color: var(--input-bg);
    color: var(--input-text);
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--transition-smooth);
}
.cockpit-search-input:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(234, 88, 12, 0.15);
}
.cockpit-search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}
.cockpit-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 24px;
    align-items: start;
}
.cockpit-sidebar {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.cockpit-widget {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--card-radius);
    padding: 20px;
    box-shadow: var(--shadow-premium);
}
.cockpit-widget h4 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 14px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}
.cockpit-nav-list {
    list-style: none;
}
.cockpit-nav-list li {
    margin-bottom: 6px;
}
.cockpit-nav-list a {
    display: block;
    padding: 8px 12px;
    border-radius: 6px;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: var(--transition-smooth);
}
.cockpit-nav-list a:hover {
    background-color: var(--secondary-bg);
    color: var(--text-primary);
}
.cockpit-nav-list a.active {
    background-color: rgba(234, 88, 12, 0.1);
    color: var(--primary-color);
    font-weight: 600;
}
.cockpit-fav-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.cockpit-fav-list li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    padding: 4px 6px;
}
.cockpit-fav-list .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--primary-color);
}
.cockpit-section-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}
.cockpit-section-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background-color: var(--border-color);
}
.dashboard-grid-recent {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}
.recent-tool-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--card-radius);
    cursor: pointer;
    text-align: left;
    transition: var(--transition-smooth);
    width: 100%;
    box-shadow: var(--shadow-premium);
}
.recent-tool-btn:hover {
    transform: translateY(-2px);
    border-color: var(--primary-color);
    box-shadow: 0 6px 20px rgba(234, 88, 12, 0.1);
}
.recent-tool-btn h5 {
    font-size: 0.95rem;
    color: var(--text-primary);
    margin-bottom: 2px;
}
.recent-tool-btn p {
    font-size: 0.8rem;
    color: var(--text-muted);
}
.project-card, .circuit-card {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.project-card h5, .circuit-card h5 {
    font-size: 0.95rem;
    color: var(--text-primary);
}
.project-info, .circuit-info {
    font-size: 0.8rem;
    color: var(--text-muted);
}
.project-metric, .circuit-stat {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    border-bottom: 1px dashed var(--border-color);
    padding-bottom: 4px;
}
.project-metric span:last-child, .circuit-stat span:last-child {
    font-weight: 700;
}
.text-danger {
    color: var(--color-danger) !important;
}

/* Responsiveness for Cockpit */
@media (max-width: 1200px) {
    .cockpit-layout {
        grid-template-columns: 1fr;
    }
    .cockpit-sidebar {
        display: none;
    }
}

/* ─── Global Top Header Bar Styles ───────────────────────────────────────── */
.global-header {
    position: fixed;
    top: 0;
    left: 0;
    height: 56px;
    background-color: #1e293b; /* Premium Navy Charcoal */
    border-bottom: 1px solid #334155;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 40px;
    width: 100%;
    z-index: 1000;
}
[data-theme="dark"] .global-header {
    background-color: #0f172a;
    border-bottom: 1px solid #1e293b;
}
.btn-theme-toggle-header:hover {
    color: #ffffff !important;
    background-color: rgba(255,255,255,0.08);
}
.header-lang-btn {
    border: none;
    background: transparent;
    color: #94a3b8;
    padding: 4px 10px;
    border-radius: 14px;
    font-size: 0.7rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}
.header-lang-btn.active {
    background: var(--primary-color);
    color: white;
}
.header-lang-btn:hover:not(.active) {
    color: #ffffff !important;
}

/* ─── Tool Hover Preview Popup Styles ────────────────────────────────────── */
.tool-preview-popup {
    position: fixed;
    width: 340px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-premium), 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
    z-index: 9999;
    opacity: 0;
    /* Die Karte ist reine Information. Nähme sie Hover an, blockierte sie die
       Kacheln, über denen sie liegt. */
    pointer-events: none;
    transform: translateY(6px) scale(0.98);
    transition: opacity 0.16s cubic-bezier(0.16, 1, 0.3, 1), transform 0.16s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
}
.tool-preview-popup.visible {
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* Ankerpfeil zur gehoverten Kachel. --arrow-pos setzt toolPreviews.js so, dass
   der Pfeil immer auf der Zeichenfläche sitzt — dort ist der Hintergrund
   einfarbig, der Pfeil setzt also nicht halb auf dem Textblock auf. */
.tool-preview-popup::after {
    content: "";
    position: absolute;
    width: 10px;
    height: 10px;
    background-color: var(--bg-app);
    border: 1px solid var(--border-color);
    transform: rotate(45deg);
}
.tool-preview-popup.arrow-left::after {
    left: -6px;
    top: var(--arrow-pos, 40px);
    margin-top: -5px;
    border-top: 0;
    border-right: 0;
}
.tool-preview-popup.arrow-right::after {
    right: -6px;
    top: var(--arrow-pos, 40px);
    margin-top: -5px;
    border-bottom: 0;
    border-left: 0;
}
.tool-preview-popup.arrow-top::after {
    top: -6px;
    left: var(--arrow-pos, 40px);
    margin-left: -5px;
    border-bottom: 0;
    border-right: 0;
}

/* Zeichenfläche. Innenmaß exakt 320 × 180 px, damit die SVGs 1 : 1 rendern und
   font-size wieder Pixel bedeutet:
   Breite  340 − 2·1 Rahmen − 2·9 Polsterung = 320
   Höhe    200 − 1 Rahmen  − 2·9 Polsterung = 181 → Maßstab bleibt 1,0 */
.preview-stage {
    height: 200px;
    padding: 9px;
    background-color: var(--bg-app);
    background-image:
        linear-gradient(rgba(148, 163, 184, 0.10) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148, 163, 184, 0.10) 1px, transparent 1px);
    background-size: 16px 16px;
    background-position: center;
    border-bottom: 1px solid var(--border-color);
    border-radius: 11px 11px 0 0;
}
.preview-stage svg {
    display: block;
    width: 100%;
    height: 100%;
}

/* ─── Grafik-Tafeln der Startseite ───────────────────────────────────────────
   Gleiche Zeichensprache wie die Vorschauen (Klasse eng-figure), aber eigenes
   Raster: viewBox 340 × 150, Bühne y 0…120, Bildunterschrift auf y = 142.
   Der Akzent je Kapitel kommt als --akzent vom Element. */
.showcase-panel {
    background-color: var(--bg-app);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px 20px 12px;
}
.showcase-panel-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
    margin-bottom: 10px;
}
.showcase-panel-head .titel {
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--akzent, var(--text-secondary));
}
.showcase-panel-head .kennwert {
    flex: none;
    white-space: nowrap;
    padding: 2px 9px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background-color: var(--bg-card);
    font-size: 0.74rem;
    font-weight: 700;
    color: var(--akzent, var(--text-primary));
}
/* height:auto statt fester Höhe: sonst rendert das SVG in einer breiten Spalte
   weiter mit 340 px Breite und sitzt mit Leerraum links und rechts darin. */
.showcase-figure svg {
    display: block;
    width: 100%;
    height: auto;
}

/* Gemeinsame Formatierung aller Grafiken. Steht bewusst hier und nicht als
   Attribut in den SVGs — sonst driften sie wieder auseinander.
   Textrollen: pv-hd Kopfzeile · pv-ft Fußzeile · pv-lb Beschriftung ·
   pv-dim Nennmaß · pv-acc Ergebnis · pv-ok bestätigender Wert */
.eng-figure svg text { font-family: inherit; }
/* Mittig ist der Normalfall. Das :not() lässt ein text-anchor-Attribut am
   Element gewinnen — ohne die Einschränkung überstimmt die CSS-Regel es, und
   links- oder rechtsbündige Beschriftungen rutschen auf das Bauteil. */
.eng-figure svg text:not([text-anchor]) { text-anchor: middle; }
.eng-figure .pv-hd    { font-size: 10px; font-weight: 600; fill: var(--text-muted); letter-spacing: 0.06em; }
.eng-figure .pv-ft    { font-size: 11px; font-weight: 700; fill: #ea580c; }
.eng-figure .pv-ft.ok { fill: #10b981; }
.eng-figure .pv-lb    { font-size: 10px; font-weight: 600; fill: var(--text-secondary); }
.eng-figure .pv-dim   { font-size: 10px; font-weight: 700; fill: #3b82f6; }
.eng-figure .pv-acc   { font-size: 10px; font-weight: 700; fill: #ea580c; }
.eng-figure .pv-ok    { font-size: 10px; font-weight: 700; fill: #10b981; }
.eng-figure .pv-cap   { font-size: 10px; font-weight: 600; fill: var(--text-muted); }
.eng-figure .pv-sub,
.eng-figure .pv-sup   { font-size: 7px; }

/* Geometrierollen: g-part Bauteilkontur · g-ref Bezugs-/Nennmaß ·
   g-acc Ergebnis · g-ok bestätigend · g-aux Hilfslinie · g-cl Mittellinie ·
   g-dim Maßlinie. Neutraltöne kommen aus Variablen, sonst bricht Dark Mode. */
.eng-figure .g-part  { fill: none; stroke: var(--text-secondary); stroke-width: 1.6; }
.eng-figure .g-fill  { fill: rgba(100, 116, 139, 0.10); stroke: var(--text-secondary); stroke-width: 1.6; }
.eng-figure .g-ref   { fill: none; stroke: #3b82f6; stroke-width: 1.6; }
.eng-figure .g-ref-f { fill: rgba(59, 130, 246, 0.12); stroke: #3b82f6; stroke-width: 1.6; }
.eng-figure .g-acc   { fill: none; stroke: #ea580c; stroke-width: 1.8; }
.eng-figure .g-acc-f { fill: rgba(234, 88, 12, 0.15); stroke: #ea580c; stroke-width: 1.8; }
.eng-figure .g-acc-s { fill: #ea580c; stroke: none; }
.eng-figure .g-ok-f  { fill: rgba(16, 185, 129, 0.12); stroke: #10b981; stroke-width: 1.6; }
.eng-figure .g-aux   { fill: none; stroke: var(--text-muted); stroke-width: 1; }
.eng-figure .g-cl    { fill: none; stroke: var(--text-muted); stroke-width: 1; stroke-dasharray: 6 2 2 2; }
.eng-figure .g-dim   { fill: none; stroke: var(--text-muted); stroke-width: 1; }

.preview-info {
    padding: 14px 16px 16px;
}
.preview-norm {
    display: inline-block;
    margin-bottom: 8px;
    padding: 2px 7px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--text-muted);
}
.preview-norm[hidden] {
    display: none;
}
.preview-info h4 {
    margin: 0 0 6px 0;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
}
.preview-info p {
    margin: 0;
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.45;
}





/* --- GPU-ACCELERATED 60 FPS PORTAL & VIEW TRANSITIONS --- */
@keyframes bounceVertical {
    0%, 100% { transform: translate3d(0, 0, 0); }
    50% { transform: translate3d(0, 4px, 0); }
}

.bounce-arrow {
    animation: bounceVertical 1.5s infinite cubic-bezier(0.4, 0, 0.6, 1);
}

.btn-portal-primary:hover {
    transform: translate3d(0, -2px, 0) scale(1.02);
    box-shadow: 0 12px 32px rgba(37, 99, 235, 0.5) !important;
}

.portal-spring-active {
    will-change: transform, box-shadow, border-color;
    backface-visibility: hidden;
    transition: transform 0.1s cubic-bezier(0.2, 0.8, 0.4, 1), box-shadow 0.1s ease, border-color 0.1s ease;
}

.portal-glow-pulse {
    box-shadow: 0 0 45px rgba(234, 88, 12, 0.5), 0 0 90px rgba(37, 99, 235, 0.35) !important;
}

.view-transition-fade-out {
    will-change: transform, opacity, filter;
    backface-visibility: hidden;
    animation: viewFadeScaleOut 0.35s cubic-bezier(0.25, 1, 0.5, 1) forwards;
}

.view-transition-fade-in {
    will-change: transform, opacity, filter;
    backface-visibility: hidden;
    animation: viewFadeScaleIn 0.42s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes viewFadeScaleOut {
    0% {
        opacity: 1;
        transform: translate3d(0, 0, 0) scale(1);
        filter: blur(0px);
    }
    100% {
        opacity: 0;
        transform: translate3d(0, -12px, 0) scale(0.975);
        filter: blur(2px);
    }
}

@keyframes viewFadeScaleIn {
    0% {
        opacity: 0;
        transform: translate3d(0, 16px, 0) scale(0.985);
        filter: blur(2px);
    }
    100% {
        opacity: 1;
        transform: translate3d(0, 0, 0) scale(1);
        filter: blur(0px);
    }
}

.snap-release-effect {
    will-change: transform, opacity, filter;
    backface-visibility: hidden;
    animation: snapReleaseAnimation 0.42s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes snapReleaseAnimation {
    0% {
        transform: translate3d(0, -15px, 0) scale(1.02);
        opacity: 1;
        filter: blur(0px);
    }
    45% {
        transform: translate3d(0, -28px, 0) scale(0.96);
        opacity: 0.5;
        filter: blur(1.5px);
    }
    100% {
        transform: translate3d(0, -42px, 0) scale(0.94);
        opacity: 0;
        filter: blur(4px);
    }
}

/* --- Ausgleich für Views außerhalb von .main-content ---
   12 .tab-view-Container liegen direkt unter <body> statt in
   .app-container > main.main-content. Solange das so ist, muss der
   dann leere .app-container seine min-height aufgeben, und die
   abgesetzten Views brauchen den Innenabstand von .main-content.
   Werte gespiegelt von .app-container.no-sidebar .main-content
   (Zeile 1600 und 1684) — bei Änderungen dort mit anpassen. */
body.view-detached .app-container {
    min-height: 0;
}
body.view-detached .app-container > .main-content {
    padding-top: 0;
    padding-bottom: 0;
}
body > .tab-view {
    padding: 24px 40px;
}
@media (max-width: 860px) {
    body > .tab-view {
        padding: 20px;
    }
}

/* --- Schaltplan-Editor (eigenes SVG, Ersatz für GoJS) --- */
.sch-host {
    width: 100%;
    height: 100%;
    position: relative;
    background:
        radial-gradient(circle at 1px 1px, transparent 0, transparent 100%),
        var(--bg-card);
    overflow: hidden;
}
.sch-svg {
    width: 100%; height: 100%; display: block; cursor: grab;
    /* Sonst markiert das Ziehen die Blockbeschriftungen als Text. */
    user-select: none; -webkit-user-select: none;
}
.sch-svg:active { cursor: grabbing; }

.sch-grid circle { fill: var(--border-color); opacity: 0.55; }

/* Bauteile */
.sch-node { color: var(--text-primary); cursor: move; }
.sch-node .sch-hit { fill: transparent; stroke: none; }
.sch-node:hover .sch-hit { fill: var(--primary-color); fill-opacity: 0.06; }
.sch-node.is-selected .sch-hit {
    fill: var(--primary-color); fill-opacity: 0.10;
    stroke: var(--primary-color); stroke-width: 1.5; stroke-dasharray: 4 3;
}
.sch-label {
    font-size: 10px; font-weight: 600; fill: var(--text-muted);
    pointer-events: none; user-select: none;
}

/* Anschlüsse */
.sch-port {
    fill: var(--bg-card); stroke: var(--text-muted); stroke-width: 1.4;
    cursor: crosshair; transition: fill .12s, stroke .12s, r .12s;
}
.sch-node:hover .sch-port { stroke: var(--primary-color); }
.sch-port:hover, .sch-port.is-target {
    fill: var(--primary-color); stroke: var(--primary-color); r: 6;
}

/* Leitungen */
.sch-link-hit { stroke: transparent; stroke-width: 14; fill: none; cursor: pointer; }
.sch-link-line {
    stroke: var(--text-muted); stroke-width: 2; fill: none;
    stroke-linejoin: round; stroke-linecap: round;
    transition: stroke .18s;
}
.sch-link.is-selected .sch-link-line { stroke: var(--primary-color); stroke-width: 3; }
/* Druckführende Leitungen deutlich absetzen — drucklos bleibt dünn und grau,
   mit steigendem Druck wird die Leitung kräftiger und wandert von Blau über
   Orange nach Rot. */
.sch-link-line.p-zero { stroke: var(--text-muted); stroke-width: 1.8; opacity: 0.65; }
.sch-link-line.p-low  { stroke: #0ea5e9; stroke-width: 3;   opacity: 1; }
.sch-link-line.p-mid  { stroke: #f59e0b; stroke-width: 3.6; opacity: 1; }
.sch-link-line.p-high { stroke: #ef4444; stroke-width: 4.2; opacity: 1; }

.sch-ghost {
    stroke: var(--primary-color); stroke-width: 2; fill: none;
    stroke-dasharray: 5 4; pointer-events: none;
}

/* Bauteil-Palette */
.sch-palette { display: flex; flex-wrap: wrap; gap: 6px; padding: 6px 2px; }
.sch-palette-item {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 2px; padding: 6px 4px; min-width: 62px;
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: 8px; cursor: pointer; color: var(--text-primary);
    transition: border-color .15s, transform .1s, background .15s;
}
.sch-palette-item:hover {
    border-color: var(--primary-color); background: var(--bg-body); transform: translateY(-1px);
}
.sch-palette-item:active { transform: translateY(0); }
.sch-palette-item svg { display: block; }
.sch-palette-item span {
    font-size: 0.62rem; font-weight: 600; color: var(--text-muted);
    text-align: center; line-height: 1.15;
}

/* Aktive Signalleitung im FUP-Plan */
.sch-link-line.sig-on { stroke: var(--color-warning, #ea580c); stroke-width: 2.8; }

/* Knotenpunkt: mehrere Leitungen am selben Anschluss */
.sch-port.is-knoten { fill: var(--text-primary); stroke: var(--text-primary); }
.sch-node:hover .sch-port.is-knoten { fill: var(--primary-color); stroke: var(--primary-color); }

/* Von Hand geführte Leitung: dezent gekennzeichnet, damit erkennbar bleibt,
   wo die Automatik nicht mehr greift. */
.sch-link.is-manuell .sch-link-line { stroke-dasharray: none; }
.sch-link.is-manuell .sch-link-hit { cursor: move; }

/* Anschluss lehnt eine Verbindung ab */
.sch-port.is-abgewiesen {
    fill: var(--color-danger, #dc2626); stroke: var(--color-danger, #dc2626);
    r: 7;
}


/* --- GLOBALER FOOTER ---------------------------------------------------
   Steht außerhalb der .tab-view-Container und bleibt daher in jeder Ansicht
   sichtbar. Trägt die interne Verlinkung auf alle Rechner-URLs sowie die
   Pflichtlinks Impressum und Datenschutz. */

.global-footer {
    /* Knapp gehalten: der Footer bringt mit padding-top 40px genug eigene
       Luft mit, und darüber sitzen bereits der Wrapper-Abstand der Startseite
       und das padding-bottom von .main-content. */
    margin-top: 24px;
    padding: 40px 24px 24px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-sidebar);
    color: var(--text-muted);
    font-size: 0.875rem;
}

.global-footer-grid {
    max-width: 1180px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 28px 32px;
}

.global-footer-grid h2 {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin: 0 0 12px;
}

.global-footer-grid ul,
.global-footer-bar ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.global-footer-grid li { margin-bottom: 8px; }

.global-footer a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.15s ease;
}

.global-footer a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.global-footer-bar {
    max-width: 1180px;
    margin: 32px auto 0;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px 24px;
}

.global-footer-bar p {
    margin: 0;
    font-size: 0.8rem;
}

.global-footer-bar ul {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 20px;
    font-size: 0.8rem;
}

@media print {
    .global-footer { display: none; }
}

/* ─── PORTAL-DOCK ──────────────────────────────────────────────────────────
   Schmale, am unteren Fensterrand fixierte Leiste. Fährt ein, sobald
   #bottom-tools-portal nach oben aus dem Bild gescrollt ist, und trägt
   Beschriftung und Fortschritt dorthin, wo die Geste stattfindet: ans echte
   Dokumentende unterhalb des Footers. Nur auf dem Dashboard aktiv, gesteuert
   von setupPortalDock() in js/app.js.

   fixed statt sticky: mit html, body { overflow-x: hidden; position: relative }
   (Zeile 69) und dem Footer im normalen Fluss würde sticky entweder nicht
   kleben oder in der Footer-Box sitzen.

   z-index 900 liegt bewusst unter .modal-overlay (2000) und
   .tool-preview-popup (9999) — ein offener Dialog soll das Dock überdecken,
   nicht umgekehrt. Mit .global-header (1000) gibt es keine Überschneidung,
   der steht am gegenüberliegenden Rand. */

:root { --portal-dock-h: 60px; }

.portal-dock {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 900;
    transform: translate3d(0, 110%, 0);
    transition: transform 0.38s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform;
}

/* Ohne diese Regel verliert das UA-[hidden] gegen das display der Komponente. */
.portal-dock[hidden] { display: none; }

.portal-dock.is-visible { transform: translate3d(0, 0, 0); }

/* ACHTUNG: transform am äußeren .portal-dock gehört allein dem Ein- und
   Ausfahren. Dip- und Zündungs-Animation greifen deshalb hier am
   Innencontainer an — schriebe das Skript ein transform nach außen, bliebe
   die Leiste dauerhaft stehen. */
.portal-dock-inner {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    min-height: var(--portal-dock-h);
    padding: 10px 20px;
    padding-bottom: 10px;
    /* Zweite Deklaration: Browser ohne env() verwerfen sie und behalten 10px. */
    padding-bottom: calc(10px + env(safe-area-inset-bottom, 0px));
    background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
    border-top: 1px solid rgba(59, 130, 246, 0.35);
    box-shadow: 0 -8px 28px rgba(15, 23, 42, 0.32);
}

/* Wie .global-header bleibt die Leiste auch im Hellmodus dunkel. */
[data-theme="dark"] .portal-dock-inner {
    background: linear-gradient(180deg, #111c31 0%, #0b1120 100%);
    border-top-color: rgba(96, 165, 250, 0.32);
}

/* Fortschritt als durchgehende Oberkante statt 140px-Pille: auf dem Handy
   deutlich besser lesbar und liest sich wie ein Ladebalken zur nächsten Seite. */
.portal-dock-fill {
    position: absolute;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--portal-accent), var(--primary-color));
    transition: width 0.15s ease-out;
}

.portal-dock-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 6px 12px;
    border: 0;
    border-radius: 8px;
    background: transparent;
    color: #e2e8f0;
    font-family: 'Outfit', sans-serif;
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.18s ease;
}

.portal-dock-btn:hover { background: rgba(255, 255, 255, 0.08); }

.portal-dock-btn:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.portal-dock-icon,
.portal-dock-arrow {
    display: inline-flex;
    color: var(--portal-accent-soft);
}

.portal-dock-hint {
    font-family: 'Inter', sans-serif;
    font-size: 0.76rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #94a3b8;
}

/* Zündung: kurzer Schub, während showView() umschaltet. */
.portal-dock.is-launching .portal-dock-inner {
    animation: portalDockLaunch 0.18s ease-in forwards;
}

@keyframes portalDockLaunch {
    0%   { transform: translate3d(0, 0, 0); }
    100% {
        transform: translate3d(0, -6px, 0);
        box-shadow: 0 -14px 36px rgba(37, 99, 235, 0.45);
    }
}

/* Platz für die Leiste, sonst liegt die letzte Footer-Zeile dauerhaft
   darunter. Die Klasse setzt js/app.js beim Scharfschalten, also beim
   Ansichtswechsel — nicht während des Scrollens, damit sich scrollHeight
   nicht mitten in der Geste ändert. */
.has-portal-dock .global-footer {
    padding-bottom: calc(24px + var(--portal-dock-h));
}

/* Tastaturfokus soll nicht unter der Leiste landen. */
.has-portal-dock { scroll-padding-bottom: calc(12px + var(--portal-dock-h)); }

@media (max-width: 600px) {
    :root { --portal-dock-h: 54px; }
    .portal-dock-inner { gap: 10px; padding-left: 12px; padding-right: 12px; }
    .portal-dock-hint { display: none; }
    .portal-dock-btn { font-size: 0.85rem; }
}

@media print {
    .portal-dock { display: none !important; }
}

/* ─── Live-Vorschau der Toleranzkette in den Assistenten ───────────────────── */
/* Wird von js/ui/chainPreview.js in #normsChainPreview und #fitsChainPreview
   eingehängt. Nutzt nur Design-Tokens, damit Hell/Dunkel automatisch passt. */

.chain-preview-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.chain-preview-title {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.chain-preview-goto {
    padding: 6px 12px;
    font-size: 0.8rem;
}

.chain-preview-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
    max-height: 240px;
    overflow-y: auto;
}

.chain-preview-empty {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin: 0;
    padding: 12px 0;
}

.chain-preview-row {
    display: grid;
    grid-template-columns: 18px 1fr auto auto;
    align-items: center;
    gap: 10px;
    width: 100%;
    text-align: left;
    padding: 6px 10px;
    background-color: var(--input-bg);
    border: 1px solid transparent;
    border-radius: var(--input-radius);
    color: var(--text-primary);
    font-size: 0.82rem;
    cursor: pointer;
    transition: border-color 0.15s ease, background-color 0.15s ease;
}

.chain-preview-row:hover {
    border-color: var(--primary-color);
}

.chain-preview-sign {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
    text-align: center;
}

.chain-preview-sign.is-plus  { color: var(--color-success); }
.chain-preview-sign.is-minus { color: var(--color-danger); }

.chain-preview-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chain-preview-nominal,
.chain-preview-tol {
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-secondary);
    white-space: nowrap;
}

.chain-preview-row--new {
    border-color: var(--primary-color);
    animation: chainPreviewFlash 1.2s ease-out;
}

@keyframes chainPreviewFlash {
    0%   { background-color: var(--primary-color); color: #fff; }
    100% { background-color: var(--input-bg); }
}

.chain-preview-footer {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin-top: 12px;
    padding-top: 10px;
    border-top: 1px solid var(--border-color);
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.chain-preview-footer strong {
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-primary);
}

/* Hebt die aus einem Assistenten frisch eingefügten Kettenzeilen hervor. */
.row-highlight-flash {
    animation: rowHighlightFlash 1.4s ease-out;
}

@keyframes rowHighlightFlash {
    0%   { background-color: rgba(234, 88, 12, 0.35); }
    100% { background-color: transparent; }
}

/* Auf schmalen Bildschirmen weicht die Toleranzspalte zugunsten des Namens. */
@media (max-width: 600px) {
    .chain-preview-row {
        grid-template-columns: 16px 1fr auto;
    }
    .chain-preview-tol {
        display: none;
    }
}

/* ─── Ergebniskarten: Beschriftung und Klartext-Fazit ──────────────────────── */
/* Die große Zahl der Monte-Carlo-Karte stand vorher ohne Einheitswort da —
   "0.00 %" allein verrät nicht, ob Ausschuss oder Ausbeute gemeint ist. */

.result-val-suffix {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.01em;
}

.result-verdict {
    margin: 12px 0 0;
    padding-top: 10px;
    border-top: 1px dashed var(--border-color);
    font-size: 0.8rem;
    line-height: 1.45;
    color: var(--text-secondary);
}

.result-limits sub {
    font-size: 0.75em;
}

/* ─── Speicherstände-Leiste (Fluid, Regelungstechnik) ──────────────────────── */
/* Wird von js/ui/saveBar.js in #fluidSaveBar bzw. #ctrlSaveBar eingehängt. */

.save-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-card);
    font-size: 0.8rem;
}

.save-bar-label {
    color: var(--text-muted);
    font-weight: 500;
    white-space: nowrap;
}

.save-bar-slot {
    width: auto;
    min-width: 170px;
    max-width: 280px;
    padding: 4px 8px;
    font-size: 0.8rem;
}

.save-bar-btn {
    font-size: 0.78rem;
    padding: 5px 10px;
    white-space: nowrap;
}

.save-bar-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.save-bar-status {
    margin-left: auto;
    font-size: 0.78rem;
    color: var(--text-muted);
    text-align: right;
}

.save-bar-status.is-ok    { color: var(--color-success); }
.save-bar-status.is-error { color: var(--color-danger); }

@media (max-width: 700px) {
    .save-bar-status { margin-left: 0; width: 100%; text-align: left; }
    .save-bar-slot   { min-width: 140px; flex: 1 1 140px; }
}


/* --- ERKLAERTEXTE UNTER DEN RECHNERN -----------------------------------
   Jeder Rechner traegt unter dem Werkzeug einen Textblock: wozu er dient,
   die Formel, ein durchgerechnetes Beispiel und die haeufigsten Fragen.
   Ohne diesen Text hatten die Tool-Seiten 30 bis 150 Woerter und konnten
   fuer nichts ranken ausser dem eigenen Namen. */

.tool-guide {
    max-width: 900px;
    margin: 4rem auto 0;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.tool-guide h2 {
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 0 1.25rem;
}

.tool-guide h3 {
    color: var(--text-primary);
    font-size: 1.15rem;
    font-weight: 600;
    margin: 2rem 0 0.5rem;
}

.tool-guide h4 {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    margin: 1.25rem 0 0.35rem;
}

.tool-guide p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0 0 0.9rem;
}

.tool-guide ul {
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0 0 0.9rem;
    padding-left: 1.25rem;
}

.tool-guide li { margin-bottom: 0.35rem; }

.tool-guide a {
    color: var(--primary-color);
    text-decoration: none;
}

.tool-guide a:hover { text-decoration: underline; }

/* Formel: bewusst als Block, damit sie beim Ueberfliegen sofort auffaellt. */
.tool-guide-formula {
    display: block;
    margin: 0.75rem 0 1.25rem;
    padding: 14px 18px;
    border-left: 3px solid var(--primary-color);
    border-radius: 0 8px 8px 0;
    background: var(--secondary-bg);
    color: var(--text-primary);
    font-family: 'JetBrains Mono', 'Consolas', monospace;
    font-size: 0.95rem;
    line-height: 1.8;
    overflow-x: auto;
    white-space: pre-wrap;
}

.tool-guide-formula .var {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Durchgerechnetes Beispiel. */
.tool-guide-example {
    margin: 0.75rem 0 1.25rem;
    padding: 16px 18px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: var(--bg-card);
}

.tool-guide-example p { margin-bottom: 0.5rem; }
.tool-guide-example p:last-child { margin-bottom: 0; }

.tool-guide-example strong { color: var(--text-primary); }

.tool-guide-faq h4 {
    padding-left: 14px;
    border-left: 2px solid var(--primary-color);
}

/* Verwandte Rechner am Ende jedes Erklaertexts. Vorher enthielten 18 der 19
   Rechner-Seiten keinen einzigen internen Link — Besucher wie Suchmaschinen
   kamen von dort nicht weiter. Bewusst als <nav> mit Beschriftung, damit
   Screenreader den Block ueberspringen koennen. */
.tool-guide-related {
    margin-top: 2.5rem;
    padding: 18px 20px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: var(--bg-card);
}

.tool-guide-related h3 {
    margin: 0 0 0.6rem;
    font-size: 1rem;
}

.tool-guide-related ul {
    margin: 0;
    padding-left: 1.1rem;
}

.tool-guide-related li { margin-bottom: 0.3rem; }
.tool-guide-related li:last-child { margin-bottom: 0; }

@media (max-width: 640px) {
    .tool-guide { margin-top: 2.5rem; }
    .tool-guide-formula { font-size: 0.85rem; }
}

/* ─── BEWEGUNG REDUZIEREN ──────────────────────────────────────────────────
   Erste Regel dieser Art in der Datei; steht bewusst ganz am Ende, damit sie
   alle vorherigen Animationen überschreibt. Das Portal-Dock bleibt voll
   funktionsfähig — es fährt nur ohne Gleiten ein, der Fortschritt springt
   statt zu wachsen, Dip und Pfeil-Hüpfen entfallen. Die Schwellen in
   js/app.js bleiben identisch (siehe dockRuhig()). */
@media (prefers-reduced-motion: reduce) {
    .portal-dock,
    .portal-dock-fill { transition: none; }

    .portal-dock.is-launching .portal-dock-inner { animation: none; }

    .bounce-arrow { animation: none; }

    .view-transition-fade-in,
    .view-transition-fade-out,
    .snap-release-effect {
        animation-duration: 0.01ms;
        animation-iteration-count: 1;
    }
}

/* ============================================================
   Mobile: horizontaler Überlauf (Stand 2026-08-04)
   ------------------------------------------------------------
   Auf 375 px liefen 10 der 21 Views über den Viewport hinaus,
   von view-stackup (607 px) bis view-section (384 px).
   Zwei Ursachen:

   1. Flex-Leisten ohne flex-wrap. Die Buttons können nicht
      umbrechen und schieben die Zeile auf.

   2. Grids, deren Spalten als Inline-style im index.html stehen
      (meist "1fr 1fr"). Weiter oben (Zeile ~992) steht für
      .dashboard-grid bei ≤860 px längst "grid-template-columns:
      1fr" — Inline-Styles schlagen aber jede Stylesheet-Regel,
      deshalb kam das nie an. Das !important stellt also nur die
      ohnehin vorgesehene einspaltige Mobilansicht her.
      Dazu min-width: 0 auf den Kindern: 1fr-Tracks haben
      implizit min-width: auto und schrumpfen sonst nicht unter
      ihren Inhalt — genau daran scheiterte das Umschalten.

   "screen and" ist nicht kosmetisch: A4 ist beim Druck rund
   794 px breit, die Query würde sonst auch dort greifen und den
   dreispaltigen Druck-Block (Zeile ~1265) überschreiben.

   Nicht angefasst: die breiten Tabellen. Die liegen sauber in
   .table-responsive und scrollen dort für sich.
   ============================================================ */
@media screen and (max-width: 860px) {
    .header-actions,
    .table-summary-bar,
    .visualizer-header,
    .mode-toggle-group,
    .sketcher-container,
    .result-body,
    .tab-view .card-header > div {
        flex-wrap: wrap;
    }

    .tab-view .dashboard-grid,
    .tab-view [style*="grid-template-columns"] {
        grid-template-columns: 1fr !important;
    }

    .tab-view .dashboard-grid > *,
    .tab-view [style*="grid-template-columns"] > *,
    .tab-view .card,
    .tab-view .card-header,
    .tab-view .result-body {
        min-width: 0;
    }
}