/* ==========================================
   PAVEMENT DESIGN SUITE - STYLES
   IRC:37-2018 Dashboard Theme
   ========================================== */

/* CSS Variables for Themes */
:root {
    /* Light Theme (Default) */
    --bg-primary: #f5f7fa;
    --bg-secondary: #ffffff;
    --bg-sidebar: #1a2744;
    --bg-card: #ffffff;
    --text-primary: #2c3e50;
    --text-secondary: #6b7c93;
    --text-sidebar: #a8b9ce;
    --text-sidebar-active: #ffffff;
    --border-color: #e3e8ee;
    --action-blue: #0066cc;
    --action-blue-hover: #0052a3;
    --success: #28a745;
    --warning: #ffc107;
    --danger: #dc3545;
    --info: #17a2b8;
    --terminal-bg: #1e1e1e;
    --terminal-text: #00ff41;
    --terminal-border: #3d5a80;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
}

[data-theme="dark"] {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-sidebar: #010409;
    --bg-card: #21262d;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-sidebar: #8b949e;
    --text-sidebar-active: #ffffff;
    --border-color: #30363d;
    --action-blue: #58a6ff;
    --action-blue-hover: #79b8ff;
    --terminal-bg: #0d1117;
    --terminal-text: #39d353;
    --terminal-border: #238636;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.5);
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    display: flex;
    min-height: 100vh;
}

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    background: var(--bg-card);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

.icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: inline; }

/* Sidebar */
.sidebar {
    width: 280px;
    min-height: 100vh;
    background: var(--bg-sidebar);
    color: var(--text-sidebar);
    display: flex;
    flex-direction: column;
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 100;
    box-shadow: var(--shadow-lg);
}

.sidebar-header {
    padding: 30px 25px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-sidebar-active);
    letter-spacing: -0.5px;
}

.sidebar-header p {
    font-size: 0.85rem;
    margin-top: 5px;
    opacity: 0.8;
}

.sidebar-nav {
    flex: 1;
    padding: 20px 0;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 14px 25px;
    color: var(--text-sidebar);
    text-decoration: none;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
    margin: 2px 0;
}

.nav-item:hover {
    background: rgba(255,255,255,0.05);
    color: var(--text-sidebar-active);
}

.nav-item.active {
    background: rgba(0,102,204,0.2);
    border-left-color: var(--action-blue);
    color: var(--text-sidebar-active);
}

.nav-item.completed .nav-icon {
    background: var(--success);
}

.nav-item.completed .nav-icon::after {
    content: '✓';
    position: absolute;
    color: white;
    font-size: 0.7rem;
}

.nav-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(255,255,255,0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 600;
    margin-right: 14px;
    position: relative;
}

.nav-item.active .nav-icon {
    background: var(--action-blue);
    color: white;
}

.nav-text {
    flex: 1;
    font-size: 0.9rem;
    font-weight: 500;
}

.nav-status {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: transparent;
}

.nav-item.completed .nav-status {
    background: var(--success);
}

.sidebar-footer {
    padding: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.design-summary h4 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
    color: var(--text-sidebar);
}

.summary-item {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    padding: 6px 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.summary-item span:last-child {
    color: var(--text-sidebar-active);
    font-weight: 500;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 280px;
    padding: 30px 40px;
    min-height: 100vh;
}

/* Step Panels */
.step-panel {
    display: none;
    animation: fadeIn 0.3s ease;
}

.step-panel.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.panel-header {
    margin-bottom: 30px;
}

.panel-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.panel-header p {
    color: var(--text-secondary);
    font-size: 1rem;
}

.panel-grid {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 30px;
    margin-bottom: 30px;
    align-items: start;
}

.panel-grid .input-column {
    /* Input column contains all form content */
    overflow: visible;
}

.panel-grid .results-column {
    position: sticky;
    top: 30px;
    max-height: calc(100vh - 60px);
    overflow-y: auto;
}

.panel-grid .input-column.wide {
    grid-column: span 1;
}

.panel-grid .results-column.narrow {
    max-width: 350px;
}

.panel-footer {
    display: flex;
    justify-content: flex-end;
    gap: 15px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    margin-bottom: 20px;
    overflow: visible;
}

/* Reinforcement card needs to show all content */
#reinforcementCard {
    overflow: visible;
}

#reinforcementCard .card-body {
    overflow: visible;
}

.card-header {
    padding: 18px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-secondary);
}

.card-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-body {
    padding: 24px;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: var(--bg-primary);
    color: var(--text-secondary);
}

.badge-info { background: #e3f2fd; color: #1565c0; }
.badge-success { background: #e8f5e9; color: #2e7d32; }
.badge-warning { background: #fff8e1; color: #f57f17; }
.badge-terminal { background: var(--terminal-bg); color: var(--terminal-text); }

[data-theme="dark"] .badge-info { background: #1e3a5f; color: #90caf9; }
[data-theme="dark"] .badge-success { background: #1b4332; color: #95d5b2; }
[data-theme="dark"] .badge-warning { background: #5c4813; color: #ffd54f; }

/* Form Elements */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    background: var(--bg-secondary);
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--action-blue);
    box-shadow: 0 0 0 3px rgba(0,102,204,0.15);
}

.form-hint {
    display: block;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 6px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.input-with-btn {
    display: flex;
    gap: 10px;
}

.input-with-btn input {
    flex: 1;
}

/* Toggle Switch */
.toggle-switch {
    display: flex;
    gap: 0;
    background: var(--bg-primary);
    border-radius: 8px;
    padding: 4px;
    border: 1px solid var(--border-color);
}

.toggle-switch input[type="radio"] {
    display: none;
}

.toggle-switch label {
    padding: 10px 24px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    margin-bottom: 0;
}

.toggle-switch input:checked + label {
    background: var(--action-blue);
    color: white;
}

/* Radio Group */
.radio-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.radio-item {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    padding: 12px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.radio-item:hover {
    background: var(--bg-primary);
}

.radio-item input[type="radio"] {
    width: 18px;
    height: 18px;
    accent-color: var(--action-blue);
}

/* Tabs */
.input-method-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

.tab-btn {
    padding: 12px 20px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all 0.2s ease;
}

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

.tab-btn.active {
    color: var(--action-blue);
    border-bottom-color: var(--action-blue);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--action-blue);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: var(--action-blue-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--border-color);
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-info {
    background: #17a2b8;
    color: white;
}

.btn-info:hover {
    background: #138496;
}

.btn-warning {
    background: var(--warning);
    color: #000;
}

.btn-lg {
    padding: 14px 32px;
    font-size: 1rem;
}

/* DBM Configuration Section */
.dbm-config-section {
    margin-top: 16px;
    padding: 16px;
    background: var(--bg-primary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.dbm-config-label {
    display: block;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.dbm-config-options {
    display: flex;
    gap: 12px;
}

.radio-card {
    flex: 1;
    cursor: pointer;
}

.radio-card input {
    display: none;
}

.radio-card-content {
    display: flex;
    flex-direction: column;
    padding: 14px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-card);
    transition: all 0.2s ease;
}

.radio-card input:checked + .radio-card-content {
    border-color: var(--accent-primary);
    background: rgba(37, 99, 235, 0.05);
}

.radio-card:hover .radio-card-content {
    border-color: var(--accent-primary);
}

.radio-card-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.radio-card-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.radio-card input:checked + .radio-card-content .radio-card-title {
    color: var(--accent-primary);
}

/* Select Styled */
.select-styled {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%236b7c93' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

/* Tables */
.layer-table,
.config-table,
.verification-table,
.mif-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

/* Dual MIF Group Styling */
#dualMifGroup {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 16px;
    background: var(--bg-primary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin-top: 12px;
}

#dualMifGroup .form-group {
    margin-bottom: 0;
}

#dualMifGroup label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 500;
}

#dualMifGroup label span {
    background: var(--accent-primary);
    color: white;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.85rem;
}

.layer-table th,
.layer-table td,
.config-table th,
.config-table td,
.verification-table th,
.verification-table td,
.mif-table th,
.mif-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

/* Fix verification table column widths */
.verification-table {
    table-layout: auto;
    width: 100%;
}

.verification-table th,
.verification-table td {
    white-space: nowrap;
    padding: 10px 12px !important;
}

.verification-table th:nth-child(4),
.verification-table td:nth-child(4) {
    text-align: center;
}

.verification-table th:nth-child(5),
.verification-table td:nth-child(5) {
    text-align: center;
}

/* Make verification card scrollable if needed */
#verificationCard .card-body {
    overflow-x: auto;
}

.layer-table th,
.config-table th,
.verification-table th,
.mif-table th {
    background: var(--bg-primary);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.layer-table input,
.config-table input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* Terminal / IIT-PAVE Style */
.iit-pave-card .card-header {
    background: var(--terminal-bg);
    border-bottom-color: var(--terminal-border);
}

.iit-pave-card .card-header h3 {
    color: var(--terminal-text);
}

.terminal-box {
    background: var(--terminal-bg);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--terminal-border);
    margin-bottom: 20px;
}

.terminal-header {
    background: #2d2d2d;
    padding: 10px 16px;
    font-family: 'Roboto Mono', 'Courier New', monospace;
    font-size: 0.8rem;
    color: var(--terminal-text);
    border-bottom: 1px solid var(--terminal-border);
}

.terminal-content {
    padding: 16px;
    font-family: 'Roboto Mono', 'Courier New', monospace;
}

.terminal-table {
    width: 100%;
    border-collapse: collapse;
    color: #e0e0e0;
}

.terminal-table th {
    background: transparent;
    color: var(--terminal-text);
    font-weight: 500;
    padding: 8px 12px;
    text-align: left;
    border-bottom: 1px solid var(--terminal-border);
}

.terminal-table td {
    padding: 8px 12px;
    border-bottom: 1px solid #333;
    color: #e0e0e0;
}

.terminal-params {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--terminal-border);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    font-size: 0.85rem;
    color: #a0a0a0;
}

.terminal-params .highlight {
    color: var(--terminal-text);
    font-weight: 500;
}

.terminal-info-row {
    padding: 8px 0;
    margin-bottom: 10px;
    border-bottom: 1px solid var(--terminal-border);
    font-size: 0.9rem;
    color: #e0e0e0;
}

.terminal-section-header {
    margin-top: 16px;
    padding: 8px 0;
    border-top: 1px solid var(--terminal-border);
    font-size: 0.85rem;
    font-weight: 600;
    color: #ffc107;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.terminal-params-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px 20px;
    font-size: 0.85rem;
    color: #a0a0a0;
    padding: 8px 0;
}

.terminal-params-grid .highlight {
    color: var(--terminal-text);
    font-weight: 500;
}

.terminal-params-grid .hint {
    color: #666;
    font-size: 0.75rem;
}

.terminal-input {
    font-family: 'Roboto Mono', 'Courier New', monospace !important;
    background: var(--terminal-bg) !important;
    color: var(--terminal-text) !important;
    border-color: var(--terminal-border) !important;
}

.terminal-hint {
    color: #888 !important;
}

.terminal-analysis-points {
    margin-top: 16px;
    padding: 12px;
    background: #2d2d2d;
    border-radius: 6px;
    font-size: 0.85rem;
    color: #ffc107;
}

.terminal-analysis-points .analysis-points-table {
    margin-bottom: 12px;
}

.terminal-analysis-points .analysis-points-table th,
.terminal-analysis-points .analysis-points-table td {
    padding: 8px 12px;
    text-align: center;
}

.terminal-analysis-points .analysis-note {
    margin-top: 10px;
    padding: 8px;
    background: rgba(255, 193, 7, 0.1);
    border-radius: 4px;
    font-size: 0.8rem;
    color: #ffc107;
}

/* Results Card */
.results-card {
    /* Removed sticky positioning to prevent overlap */
}

.result-item {
    display: flex;
    align-items: baseline;
    padding: 16px 0;
    border-bottom: 1px solid var(--border-color);
}

.result-item:last-of-type {
    border-bottom: none;
}

.result-label {
    flex: 1;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.result-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--action-blue);
    margin-right: 8px;
}

.result-unit {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.result-formula {
    padding: 16px;
    background: var(--bg-primary);
    border-radius: 8px;
    margin-top: 16px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.result-note {
    padding: 16px;
    background: #fff8e1;
    border-radius: 8px;
    margin-top: 16px;
    font-size: 0.85rem;
    color: #5d4037;
    border-left: 4px solid var(--warning);
}

[data-theme="dark"] .result-note {
    background: #3d3000;
    color: #ffd54f;
}

/* Formula Card */
.formula-card .card-body {
    padding: 16px 24px;
}

.formula-item {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 16px;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.formula-eq {
    font-family: 'Roboto Mono', monospace;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
}

.formula-condition {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.formula-ref {
    font-size: 0.8rem;
    color: var(--action-blue);
    font-weight: 500;
}

.formula-note {
    padding: 12px;
    background: #e3f2fd;
    border-radius: 6px;
    margin-top: 12px;
    font-size: 0.85rem;
    color: #1565c0;
}

[data-theme="dark"] .formula-note {
    background: #1e3a5f;
    color: #90caf9;
}

/* Layer Visualizer - Professional Blueprint Style */
.visualizer-card {
    /* Removed sticky positioning to prevent overlap */
}

.badge-blueprint {
    background: var(--accent-secondary);
    color: white;
    font-size: 0.7rem;
    padding: 2px 8px;
    border-radius: 4px;
}

.blueprint-body {
    padding: 16px;
    background: var(--bg-primary);
}

.blueprint-container {
    min-height: 400px;
    max-height: 600px;
    overflow-y: auto;
    background: #ffffff;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    position: relative;
}

[data-theme="dark"] .blueprint-container {
    background: #1a1a2e;
    border-color: #404040;
}

.blueprint-container svg {
    display: block;
    width: 100%;
    height: auto;
    min-height: 400px;
}

/* Blueprint Legend */
.blueprint-legend {
    display: flex;
    gap: 20px;
    margin-top: 12px;
    padding: 10px 16px;
    background: var(--bg-card);
    border-radius: 6px;
    border: 1px solid var(--border-color);
    justify-content: center;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.legend-marker {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.marker-et {
    background: #00ff88;
    box-shadow: 0 0 6px #00ff88;
}

.marker-ev {
    background: #ff6b6b;
    box-shadow: 0 0 6px #ff6b6b;
}

.marker-geogrid {
    width: 20px;
    height: 8px;
    border-radius: 2px;
    background: linear-gradient(90deg, #2196F3 0%, #2196F3 30%, transparent 30%, transparent 40%, #2196F3 40%, #2196F3 70%, transparent 70%, transparent 80%, #2196F3 80%);
    border: 1px solid #1976D2;
}

.legend-geogrid {
    display: none; /* Hidden by default, shown via JS when reinforced layers present */
}

.legend-geogrid.visible {
    display: flex;
}

/* Legacy layer visualizer classes - kept for compatibility */
.layer-visualizer {
    min-height: 300px;
    background: var(--bg-primary);
    border-radius: 8px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.visualizer-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 300px;
    color: var(--text-secondary);
    font-style: italic;
}

.layer-viz-item {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-bottom: none;
    background: var(--bg-card);
}

.layer-viz-item:first-child {
    border-radius: 8px 8px 0 0;
}

.layer-viz-item:last-child {
    border-bottom: 1px solid var(--border-color);
    border-radius: 0 0 8px 8px;
}

.layer-color {
    width: 12px;
    min-height: 30px;
    border-radius: 4px;
    margin-right: 14px;
}

.layer-bc { background: linear-gradient(180deg, #2c3e50 0%, #34495e 100%); }
.layer-dbm { background: linear-gradient(180deg, #4a5568 0%, #718096 100%); }
.layer-bituminous { background: linear-gradient(180deg, #2c3e50 0%, #4a5568 50%, #718096 100%); }
.layer-wmm { background: linear-gradient(180deg, #d4a574 0%, #c9a068 100%); }
.layer-gsb { background: linear-gradient(180deg, #b8860b 0%, #daa520 100%); }
.layer-ctsb { background: linear-gradient(180deg, #808080 0%, #a0a0a0 100%); }
.layer-rap { background: linear-gradient(180deg, #5d4e37 0%, #7d6e57 100%); }
.layer-subgrade { background: linear-gradient(180deg, #8b4513 0%, #a0522d 100%); }
.layer-reinforced { background: repeating-linear-gradient(45deg, #d4a574, #d4a574 5px, #2196f3 5px, #2196f3 7px); }

.layer-info {
    flex: 1;
}

.layer-info h5 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.layer-info span {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.layer-thickness {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

/* Criteria Items */
.criteria-item {
    display: flex;
    align-items: baseline;
    padding: 16px 0;
    border-bottom: 1px solid var(--border-color);
}

.criteria-label {
    flex: 1;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.criteria-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-right: 8px;
}

.criteria-unit {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Verification */
.verification-card .card-body {
    padding: 16px;
}

#verificationTable {
    width: 100%;
    table-layout: fixed;
}

#verificationTable th,
#verificationTable td {
    padding: 12px 8px;
    text-align: center;
    vertical-align: middle;
}

#verificationTable th:first-child,
#verificationTable td:first-child {
    text-align: left;
    width: 30%;
}

#verificationTable th:nth-child(2),
#verificationTable td:nth-child(2),
#verificationTable th:nth-child(3),
#verificationTable td:nth-child(3) {
    width: 25%;
}

#verificationTable th:last-child,
#verificationTable td:last-child {
    width: 20%;
}

.verification-table .status-safe {
    color: var(--success);
    font-weight: 700;
    background: #e8f5e9;
    padding: 4px 12px;
    border-radius: 20px;
    display: inline-block;
}

.verification-table .status-fail {
    color: var(--danger);
    font-weight: 700;
    background: #ffebee;
    padding: 4px 12px;
    border-radius: 20px;
    display: inline-block;
}

[data-theme="dark"] .verification-table .status-safe {
    background: #1b4332;
}

[data-theme="dark"] .verification-table .status-fail {
    background: #5c1e1e;
}

/* Utilization Color Classes */
.utilization-green {
    background: #e8f5e9;
    color: #2e7d32;
}

.utilization-yellow {
    background: #fff9c4;
    color: #f57f17;
}

.utilization-orange {
    background: #ffe0b2;
    color: #e65100;
}

.utilization-red {
    background: #ffebee;
    color: #c62828;
}

[data-theme="dark"] .utilization-green {
    background: #1b4332;
    color: #81c784;
}

[data-theme="dark"] .utilization-yellow {
    background: #4a4000;
    color: #ffee58;
}

[data-theme="dark"] .utilization-orange {
    background: #4a2800;
    color: #ffb74d;
}

[data-theme="dark"] .utilization-red {
    background: #5c1e1e;
    color: #ef9a9a;
}

/* New Verification Grid Layout */
.verification-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

@media (max-width: 768px) {
    .verification-grid {
        grid-template-columns: 1fr;
    }
}

.verification-item {
    background: var(--bg-primary);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--border-color);
}

.verification-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

.verification-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.verification-status {
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 700;
}

.verification-status.safe {
    background: #e8f5e9;
    color: #2e7d32;
}

.verification-status.fail {
    background: #ffebee;
    color: #c62828;
}

[data-theme="dark"] .verification-status.safe {
    background: #1b4332;
    color: #81c784;
}

[data-theme="dark"] .verification-status.fail {
    background: #5c1e1e;
    color: #ef9a9a;
}

.verification-values {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 15px;
}

.verification-value-item {
    text-align: center;
    padding: 12px;
    background: var(--bg-secondary);
    border-radius: 8px;
}

.verification-value-item label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 5px;
}

.verification-value-item span {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    font-family: 'Roboto Mono', monospace;
}

.verification-utilization {
    padding: 12px;
    background: var(--bg-secondary);
    border-radius: 8px;
}

.utilization-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.utilization-label strong {
    font-size: 1rem;
}

.utilization-bar {
    height: 10px;
    background: var(--border-color);
    border-radius: 5px;
    overflow: hidden;
}

.utilization-fill {
    height: 100%;
    border-radius: 5px;
    transition: width 0.5s ease, background 0.3s ease;
}

.utilization-fill.good {
    background: linear-gradient(90deg, #4caf50, #81c784);
}

.utilization-fill.acceptable {
    background: linear-gradient(90deg, #ffc107, #ffeb3b);
}

.utilization-fill.marginal {
    background: linear-gradient(90deg, #ff9800, #ffb74d);
}

.utilization-fill.exceeded {
    background: linear-gradient(90deg, #f44336, #e57373);
}

.overall-status {
    margin-top: 20px;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    font-size: 1.1rem;
    font-weight: 600;
}

.overall-status.safe {
    background: #e8f5e9;
    color: var(--success);
    border: 2px solid var(--success);
}

.overall-status.fail {
    background: #ffebee;
    color: var(--danger);
    border: 2px solid var(--danger);
}

[data-theme="dark"] .overall-status.safe {
    background: #1b4332;
}

[data-theme="dark"] .overall-status.fail {
    background: #5c1e1e;
}

/* Pavement Description */
.pavement-desc {
    padding: 16px;
    background: var(--bg-primary);
    border-radius: 8px;
    margin-top: 16px;
    font-size: 0.9rem;
}

/* Granular Formula */
.granular-formula {
    padding: 12px;
    background: var(--bg-primary);
    border-radius: 6px;
    margin-top: 12px;
    font-family: 'Roboto Mono', monospace;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.granular-info {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 8px;
    line-height: 1.5;
}

/* MIF Info Table Container */
.mif-info {
    margin-bottom: 20px;
}

/* MIF Slider */
.mif-slider-group {
    margin-top: 20px;
    padding: 20px;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border-radius: 12px;
    border: 2px solid var(--action-blue);
    box-shadow: 0 4px 12px rgba(0,102,204,0.15);
}

#singleMifGroup {
    display: block;
}

#singleMifGroup.hidden {
    display: none !important;
}

#dualMifGroup.hidden {
    display: none !important;
}

.mif-slider-group label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.mif-value {
    font-size: 1.2rem;
    color: var(--action-blue);
    background: var(--bg-primary);
    padding: 4px 12px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

.mif-range-slider {
    width: 100%;
    height: 8px;
    -webkit-appearance: none;
    appearance: none;
    background: linear-gradient(to right, var(--action-blue) 0%, var(--border-color) 100%);
    border-radius: 4px;
    outline: none;
    cursor: pointer;
}

.mif-range-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--action-blue);
    cursor: pointer;
    border: 3px solid white;
    box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}

.mif-range-slider::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--action-blue);
    cursor: pointer;
    border: 3px solid white;
    box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}

.slider-range-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 8px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

#mifSlider,
#mifSliderWMM,
#mifSliderGSB {
    width: 100%;
    margin-top: 10px;
    height: 8px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--border-color);
    border-radius: 4px;
    outline: none;
    cursor: pointer;
}

#mifSlider::-webkit-slider-thumb,
#mifSliderWMM::-webkit-slider-thumb,
#mifSliderGSB::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--action-blue);
    cursor: pointer;
    border: 2px solid white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

#mifSlider::-moz-range-thumb,
#mifSliderWMM::-moz-range-thumb,
#mifSliderGSB::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--action-blue);
    cursor: pointer;
    border: 2px solid white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.form-group input[type="range"] {
    width: 100%;
    margin-top: 8px;
}

.slider-value {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--action-blue);
    margin-top: 10px;
}

/* Screenshot Upload Zone */
.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 30px 20px;
    text-align: center;
    background: var(--bg-primary);
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-zone:hover,
.upload-zone.drag-over {
    border-color: var(--action-blue);
    background: rgba(0, 102, 204, 0.05);
}

.upload-icon {
    font-size: 3rem;
    margin-bottom: 10px;
}

.upload-text {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.upload-or {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin: 10px 0;
}

.upload-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}

.upload-btn {
    cursor: pointer;
}

.upload-hint {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 12px;
}

/* Screenshot Preview */
.screenshot-preview {
    margin-top: 16px;
    position: relative;
    display: inline-block;
}

.screenshot-preview.hidden {
    display: none;
}

.screenshot-preview img {
    max-width: 100%;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.btn-remove-image {
    position: absolute;
    top: -10px;
    right: -10px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--danger);
    color: white;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

/* Report Container */
.report-container {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 40px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.report-container h1 {
    text-align: center;
    font-size: 1.75rem;
    margin-bottom: 8px;
}

.report-container .report-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.report-section {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.report-section h2 {
    font-size: 1.1rem;
    color: var(--action-blue);
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--action-blue);
    display: inline-block;
}

.report-section table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 12px;
}

.report-section th,
.report-section td {
    padding: 10px 16px;
    text-align: left;
    border: 1px solid var(--border-color);
}

.report-section th {
    background: var(--bg-primary);
    font-weight: 600;
}

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal {
    background: var(--bg-card);
    border-radius: 12px;
    width: 90%;
    max-width: 400px;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 1.1rem;
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* Large Modal */
.modal-lg {
    max-width: 700px;
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 20px;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-secondary);
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-header {
    position: relative;
}

/* History List Styles */
.history-list {
    max-height: 400px;
    overflow-y: auto;
}

.history-item {
    padding: 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 10px;
    background: var(--bg-primary);
}

.history-item:hover {
    background: var(--bg-secondary);
}

.history-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.history-item-header h4 {
    margin: 0;
    font-size: 1rem;
    color: var(--text-primary);
}

.history-item-date {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.history-item-details {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    font-size: 0.85rem;
}

.history-detail {
    padding: 8px;
    background: var(--bg-card);
    border-radius: 4px;
}

.history-detail label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 2px;
}

.history-detail span {
    font-weight: 600;
    color: var(--text-primary);
}

.history-item-status {
    margin-top: 10px;
    padding: 8px 12px;
    border-radius: 4px;
    text-align: center;
    font-weight: 600;
}

.history-item-status.safe {
    background: #e8f5e9;
    color: #2e7d32;
}

.history-item-status.unsafe {
    background: #ffebee;
    color: #c62828;
}

.no-history {
    text-align: center;
    color: var(--text-secondary);
    padding: 40px;
}

.btn-danger {
    background: #dc3545;
    color: white;
}

.btn-danger:hover {
    background: #c82333;
}

/* Hidden */
.hidden {
    display: none !important;
}

/* Print Styles */
@media print {
    .sidebar,
    .theme-toggle,
    .panel-footer {
        display: none !important;
    }
    
    .main-content {
        margin-left: 0;
        padding: 0;
    }
    
    .report-container {
        box-shadow: none;
        border: none;
    }
    
    .report-section {
        page-break-inside: avoid;
        break-inside: avoid;
    }
    
    .report-section table {
        page-break-inside: avoid;
        break-inside: avoid;
    }
    
    .report-section h2 {
        page-break-after: avoid;
        break-after: avoid;
    }
}

/* PDF Export Specific Styles */
.report-container table {
    width: 100%;
    border-collapse: collapse;
    margin: 15px 0;
    font-size: 0.9rem;
}

.report-container table th,
.report-container table td {
    padding: 10px 12px;
    border: 1px solid #ddd;
    text-align: left;
}

.report-container table th {
    background: #f5f5f5;
    font-weight: 600;
}

.report-container img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 10px auto;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.report-container h1 {
    text-align: center;
    color: #1a1a2e;
    margin-bottom: 5px;
}

.report-container .report-subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 30px;
    font-size: 0.95rem;
}

.report-container .report-section {
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

.report-container .report-section h2 {
    color: #1565c0;
    border-bottom: 2px solid #1565c0;
    padding-bottom: 8px;
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.report-container .report-section h3,
.report-container .report-section h4 {
    color: #333;
    margin-top: 15px;
    margin-bottom: 10px;
}

/* Responsive - Tablet */
@media (max-width: 1200px) {
    .panel-grid {
        grid-template-columns: 1fr 350px;
    }
}

/* Responsive - Small Tablet */
@media (max-width: 992px) {
    .panel-grid {
        grid-template-columns: 1fr;
    }
    
    .panel-grid .results-column {
        order: -1;
        position: relative;
        top: 0;
        max-height: 400px;
        overflow-y: auto;
        margin-bottom: 20px;
    }
    
    .dbm-config-options {
        flex-direction: column;
    }
}

/* Responsive - Mobile */
@media (max-width: 768px) {
    .sidebar {
        width: 70px;
        overflow: hidden;
    }
    
    .sidebar-header h1,
    .sidebar-header p,
    .nav-text,
    .sidebar-footer {
        display: none;
    }
    
    .nav-item {
        justify-content: center;
        padding: 14px;
    }
    
    .nav-icon {
        margin-right: 0;
    }
    
    .main-content {
        margin-left: 70px;
        padding: 15px;
    }
    
    .panel-header h2 {
        font-size: 1.3rem;
    }
    
    .form-row {
        flex-direction: column;
        gap: 15px;
    }
    
    .form-row .form-group {
        width: 100%;
    }
    
    .card-body {
        padding: 15px;
    }
    
    .btn {
        padding: 10px 16px;
        font-size: 0.9rem;
    }
    
    .mif-table th,
    .mif-table td {
        padding: 8px 10px;
        font-size: 0.85rem;
    }
}

/* Responsive - Small Mobile */
@media (max-width: 480px) {
    .sidebar {
        width: 60px;
    }
    
    .main-content {
        margin-left: 60px;
        padding: 10px;
    }
    
    .panel-header h2 {
        font-size: 1.1rem;
    }
    
    .card-header h3 {
        font-size: 0.9rem;
    }
    
    .badge {
        font-size: 0.6rem;
        padding: 2px 6px;
    }
}

/* ==========================================
   DEVELOPER FOOTER
   ========================================== */
.developer-footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: 15px 24px;
    margin-top: 40px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.footer-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.footer-text strong {
    color: var(--text-primary);
    font-weight: 600;
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-right: 20px;
}

.footer-link {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

.footer-link:hover {
    color: var(--primary-color);
}

.footer-link svg {
    width: 16px;
    height: 16px;
}

.footer-link span {
    font-weight: 500;
}

/* Main content padding */
.main-content {
    padding-bottom: 20px;
}

@media (max-width: 768px) {
    .developer-footer {
        padding: 12px 15px;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 10px;
    }
    
    .footer-text {
        font-size: 0.8rem;
    }
    
    .footer-links {
        gap: 15px;
    }
    
    .footer-link {
        font-size: 0.85rem;
    }
}