/* ==============================================================================
   🏔️ Trail Mapper - Premium Stylesheet
   ============================================================================== */

:root {
    --bg-color: #0b0f19;
    --card-bg: rgba(17, 24, 39, 0.65);
    --card-hover-bg: rgba(17, 24, 39, 0.85);
    --text-color: #f3f4f6;
    --text-muted: #9ca3af;
    
    /* Neon trail palettes */
    --accent-color: #10b981; /* Neon green / Emerald */
    --accent-hover: #34d399;
    --accent-glow: rgba(16, 185, 129, 0.25);
    
    --secondary-color: #f97316; /* Trail Orange */
    --secondary-hover: #fb923c;
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.16);
    --error-color: #ef4444;
    
    --font-title: 'Outfit', 'Inter', system-ui, sans-serif;
    --font-sans: 'Plus Jakarta Sans', 'Inter', system-ui, sans-serif;
}

/* Global resets & scrollbars */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body.trail-mapper-app {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-sans);
    min-height: 100vh;
    padding: 0;
    overflow-x: hidden;
    line-height: 1.5;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.3);
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-color);
}

/* Background Ambient Glows */
.ambient-glow {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: 
        radial-gradient(circle at 10% 20%, rgba(16, 185, 129, 0.06) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(249, 115, 22, 0.04) 0%, transparent 45%);
    pointer-events: none;
    z-index: -1;
}

/* Header & Top Bar */
.top-bar {
    background: rgba(11, 15, 25, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 1.25rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.back-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.back-link:hover {
    color: var(--text-color);
    transform: translateX(-3px);
}

.branding {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.branding h1 {
    font-family: var(--font-title);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #ffffff 40%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.branding .version-label {
    font-size: 0.85rem;
    font-weight: 500;
    opacity: 0.7;
    color: var(--text-muted);
    -webkit-text-fill-color: var(--text-muted);
    margin-left: 0.5rem;
    font-family: var(--font-sans);
}

.badge {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 700;
    color: var(--accent-color);
    background: var(--accent-glow);
    border: 1px solid var(--accent-color);
    padding: 0.2rem 0.5rem;
    border-radius: 999px;
    margin-bottom: 0.25rem;
    display: inline-block;
}

/* Main Layout Grid */
.main-layout {
    max-width: 1600px;
    margin: 0 auto;
    padding: 2rem;
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 1024px) {
    .main-layout {
        grid-template-columns: 480px 1fr;
    }
}

@media (min-width: 1440px) {
    .main-layout {
        grid-template-columns: 520px 1fr;
    }
}

/* Control Panel Columns */
.control-panel {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.visualizer-panel {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Glassmorphic Card Styles */
.glass-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(16px);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    position: relative;
}

.glass-card:hover {
    border-color: var(--border-hover);
    box-shadow: 0 15px 35px -5px rgba(0, 0, 0, 0.6);
}

.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.card-header h2 {
    font-family: var(--font-title);
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-grow: 1;
}

.step-num {
    background: var(--accent-color);
    color: var(--bg-color);
    font-family: var(--font-title);
    font-weight: 800;
    font-size: 0.85rem;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-body {
    padding: 1.5rem;
}

.card-body.no-padding {
    padding: 0;
}

.card-footer {
    padding: 1.25rem 1.5rem;
    border-top: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.15);
}

/* Tabs */
.tab-container {
    display: flex;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 8px;
    padding: 0.25rem;
    margin-bottom: 1.25rem;
    border: 1px solid var(--border-color);
}

.tab-btn {
    flex: 1;
    background: none;
    border: none;
    color: var(--text-muted);
    font-family: var(--font-title);
    font-weight: 600;
    font-size: 0.85rem;
    padding: 0.6rem;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.tab-btn.active {
    background: var(--accent-color);
    color: #ffffff;
    box-shadow: 0 4px 12px var(--accent-glow);
}

body.difficulty-20k .tab-btn.active {
    color: #0f172a !important;
}

.tab-btn:focus {
    outline: none;
}

.tab-btn:hover:not(.active) {
    color: var(--text-color);
    background: rgba(255, 255, 255, 0.03);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

/* Form Controls & Inputs */
.form-group {
    margin-bottom: 1.25rem;
    position: relative;
}

.form-group label {
    display: block;
    font-family: var(--font-title);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.form-control, 
input[type="text"],
input[type="number"],
input[type="url"],
textarea {
    width: 100%;
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    outline: none;
    transition: all 0.3s ease;
}

select {
    width: 100%;
    background: rgba(0, 0, 0, 0.25);
    border: none !important;
    color: var(--text-color);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    padding: 0.75rem 2.5rem 0.75rem 1rem;
    border-radius: 20px !important;
    outline: none;
    transition: all 0.3s ease;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%239ca3af' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 14px;
    cursor: pointer;
}

#locale-selector {
    width: 65px;
    height: 32px;
    padding: 0 1.5rem 0 0.5rem;
    font-size: 0.8rem;
    font-weight: 700;
    border-radius: 20px !important;
    background-color: rgba(255, 255, 255, 0.05);
    border: none !important;
    background-position: right 0.4rem center;
    background-size: 10px;
    color: var(--text-color);
    font-family: var(--font-title);
    cursor: pointer;
    transition: all 0.3s ease;
}

#locale-selector:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

body.light-theme #locale-selector {
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--text-color);
}

select option {
    background-color: #111827;
    color: #f3f4f6;
}

body.light-theme select option {
    background-color: #ffffff;
    color: #0f172a;
}

body.light-theme select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234b5563' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    border: none !important;
    border-radius: 20px !important;
}

.form-control:focus,
input[type="text"]:focus,
input[type="number"]:focus,
input[type="url"]:focus,
select:focus,
textarea:focus {
    border-color: var(--accent-color);
    background: rgba(0, 0, 0, 0.4);
    box-shadow: 0 0 15px var(--accent-glow);
}

.input-with-button {
    display: flex;
    gap: 0.5rem;
}

.input-with-button input {
    flex-grow: 1;
}

.input-helper {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.35rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-title);
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.75rem 1.25rem;
    border-radius: 8px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    white-space: nowrap;
    text-align: center;
}

.btn-primary {
    background: var(--accent-color);
    color: var(--bg-color);
}

.btn-primary:hover:not(:disabled) {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px var(--accent-glow);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--border-color);
    color: var(--text-color);
}

.btn-secondary:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--border-hover);
    transform: translateY(-1px);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.2);
    color: var(--error-color);
}

.btn-danger:hover:not(:disabled) {
    background: rgba(239, 68, 68, 0.25);
    border-color: var(--error-color);
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
    border-radius: 6px;
}

.btn-lg {
    padding: 0.9rem 1.75rem;
    font-size: 1rem;
}

.btn-block {
    display: flex;
    width: 100%;
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* Drag & Drop Zone */
.drag-drop-zone {
    background: rgba(0, 0, 0, 0.15);
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    color: var(--text-muted);
}

.drag-drop-zone:hover, 
.drag-drop-zone.dragover {
    border-color: var(--accent-color);
    background: rgba(16, 185, 129, 0.02);
    color: var(--text-color);
}

.drag-drop-zone svg {
    color: var(--text-muted);
    transition: color 0.3s ease, transform 0.3s ease;
}

.drag-drop-zone:hover svg {
    color: var(--accent-color);
    transform: translateY(-2px);
}

.hidden-input {
    display: none;
}

.drop-text {
    font-size: 0.85rem;
}

.highlight {
    color: var(--accent-color);
    text-decoration: underline;
}

.file-name-display {
    font-family: var(--font-title);
    font-size: 0.8rem;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.05);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

/* Settings Settings Grid */
.settings-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--accent-color);
    margin-top: 0.25rem;
    cursor: pointer;
}

.checkbox-group label {
    font-size: 0.85rem;
    color: var(--text-muted);
    user-select: none;
    line-height: 1.4;
    cursor: pointer;
}

.checkbox-group:hover label {
    color: var(--text-color);
}

/* Table Design */
.scrollable-table-container {
    overflow-x: auto;
    border-bottom: 1px solid var(--border-color);
}

.poi-table {
    width: 100%;
    min-width: 600px;
    border-collapse: collapse;
    font-size: 0.85rem;
    text-align: left;
}

.poi-table th {
    background: rgba(0, 0, 0, 0.2);
    font-family: var(--font-title);
    font-weight: 600;
    color: var(--text-muted);
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

.poi-table td {
    padding: 0.6rem 1rem;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.poi-table tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

.placeholder-row {
    color: var(--text-muted);
    text-align: center;
    padding: 3rem 1.5rem !important;
    font-style: italic;
}

.cell-input {
    background: rgba(0, 0, 0, 0.15) !important;
    border: 1px solid var(--border-color) !important;
    padding: 0.25rem 0.5rem !important;
    border-radius: 4px;
    color: var(--text-color);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    width: 100%;
    outline: none;
    transition: all 0.2s ease;
}

/* Hide number input spinners for cleaner table layout */
.cell-input::-webkit-outer-spin-button,
.cell-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
.cell-input[type="number"] {
    -moz-appearance: textfield;
}

.cell-input:hover {
    border-color: var(--border-hover) !important;
    background: rgba(255, 255, 255, 0.05) !important;
}

.cell-input:focus {
    border-color: var(--accent-color) !important;
    background: rgba(0, 0, 0, 0.35) !important;
}

.poi-table select.cell-input {
    cursor: pointer;
    background-position: right 0.4rem center !important;
    background-size: 10px !important;
    padding-right: 1.25rem !important;
}

.btn-icon {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.btn-icon:hover {
    color: var(--error-color);
    background: rgba(239, 68, 68, 0.1);
}

/* Visualizer Panel (Right Column) */
.stats-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

@media (min-width: 640px) {
    .stats-row {
        grid-template-columns: repeat(4, 1fr);
    }
}

.stat-card {
    background: rgba(17, 24, 39, 0.55);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.stat-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    font-family: var(--font-title);
    font-weight: 600;
}

.stat-value {
    font-family: var(--font-title);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-color);
}

#stat-race-name {
    color: var(--accent-color);
}

/* Map Card and Map Container */
.map-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    height: 480px;
    overflow: hidden;
    position: relative;
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

#map {
    width: 100%;
    height: 100%;
    z-index: 1;
    background-color: var(--bg-color);
}

.map-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(11, 15, 25, 0.9);
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem;
    transition: opacity 0.5s ease, pointer-events 0.5s ease;
}

.map-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.overlay-content {
    max-width: 400px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.overlay-content h3 {
    font-family: var(--font-title);
    font-size: 1.3rem;
    font-weight: 600;
}

.overlay-content p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Elevation Chart Card */
.elevation-profile-card {
    margin-top: 0;
}

.profile-helper {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.elevation-chart-container {
    position: relative;
    width: 100%;
    height: 160px;
}

#elevation-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

/* Leaflet Map Theme Overrides */
.leaflet-container {
    background: var(--bg-color) !important;
}

.map-dark-theme .leaflet-tile {
    filter: invert(100%) hue-rotate(180deg) saturate(120%) brightness(90%) contrast(90%);
}

.map-theme-btn {
    position: absolute;
    top: 10px;
    right: 50px;
    z-index: 1000;
    background: rgba(17, 24, 39, 0.9) !important;
    border: 1px solid var(--border-color) !important;
    color: var(--text-color) !important;
    border-radius: 4px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}

body.light-theme .map-theme-btn {
    background: #ffffff !important;
    color: #0f172a !important;
    border-color: rgba(0,0,0,0.1) !important;
}

.map-theme-btn:hover {
    background: var(--accent-color) !important;
    color: #ffffff !important;
}

.leaflet-bar {
    border: 1px solid var(--border-color) !important;
    box-shadow: none !important;
    background: rgba(17, 24, 39, 0.9) !important;
    backdrop-filter: blur(8px);
}

.leaflet-control-layers {
    background: rgba(17, 24, 39, 0.95) !important;
    border: none !important;
    border-radius: 12px !important;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3) !important;
    color: var(--text-color) !important;
    padding: 0.6rem 0.8rem !important;
    font-family: var(--font-sans) !important;
    backdrop-filter: blur(8px);
}

body.light-theme .leaflet-control-layers {
    background: rgba(255, 255, 255, 0.98) !important;
    color: #0f172a !important;
    box-shadow: 0 4px 15px rgba(15, 23, 42, 0.08) !important;
}

.leaflet-bar a {
    background: transparent !important;
    color: var(--text-color) !important;
    border-bottom: 1px solid var(--border-color) !important;
    transition: all 0.2s ease;
}

.leaflet-bar a:hover {
    color: var(--accent-color) !important;
    background: rgba(255,255,255,0.05) !important;
}

/* Leaflet Popup Styling */
.leaflet-popup-content-wrapper {
    background: rgba(17, 24, 39, 0.95) !important;
    color: var(--text-color) !important;
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5) !important;
    backdrop-filter: blur(8px);
    border-radius: 8px !important;
}

.leaflet-popup-tip {
    background: rgba(17, 24, 39, 0.95) !important;
    border: 1px solid var(--border-color);
}

.leaflet-popup-content {
    font-family: var(--font-sans);
    margin: 0.8rem 1rem !important;
}

.map-popup-title {
    font-family: var(--font-title);
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 0.25rem;
    font-size: 0.95rem;
}

.map-popup-text {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Spinner for Loading State */
.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(11, 15, 25, 0.9);
    z-index: 50;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    backdrop-filter: blur(4px);
    transition: opacity 0.3s ease;
}

.loading-overlay.active {
    display: flex;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(16, 185, 129, 0.1);
    border-radius: 50%;
    border-top-color: var(--accent-color);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

#fetch-status {
    font-family: var(--font-title);
    font-size: 0.9rem;
    font-weight: 500;
}

/* Modal Backdrop */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    display: none; /* Hidden by default */
    align-items: center;
    justify-content: center;
    z-index: 10000;
    animation: fadeIn 0.2s ease;
}

/* Modal Card */
.modal-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    width: 90%;
    max-width: 600px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
    overflow: hidden;
    animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h2 {
    font-family: var(--font-title);
    font-size: 1.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--text-color) 40%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 0;
}

.btn-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.75rem;
    cursor: pointer;
    line-height: 1;
    transition: color 0.2s;
}

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

.modal-body {
    padding: 1.5rem;
    max-height: 75vh;
    overflow-y: auto;
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-color);
}

.modal-body h3 {
    font-family: var(--font-title);
    font-size: 1.05rem;
    font-weight: 600;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--accent-color);
}

.modal-body ul {
    margin-bottom: 1.25rem;
    padding-left: 1.25rem;
}

.modal-body li {
    margin-bottom: 0.5rem;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* Full-Width Container */
.full-width-container {
    max-width: 1600px;
    margin: 0 auto 3rem auto;
    padding: 0 2rem;
    width: 100%;
}

/* Theme Switcher Styles */
.theme-switcher {
    display: flex;
    background: rgba(0, 0, 0, 0.35);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    padding: 2px;
}

.theme-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    padding: 5px 8px;
    border-radius: 999px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.theme-btn:hover {
    color: var(--text-color);
    background: rgba(255, 255, 255, 0.03);
}

.theme-btn.active {
    background: var(--accent-color);
    color: #ffffff !important;
    box-shadow: 0 0 10px var(--accent-glow);
}

/* ==============================================================================
   ☀️ Light Theme Overrides
   ============================================================================== */
body.light-theme {
    --bg-color: #f1f5f9; /* Slate 100 */
    --card-bg: rgba(255, 255, 255, 0.8);
    --card-hover-bg: rgba(255, 255, 255, 0.95);
    --text-color: #0f172a; /* Slate 900 */
    --text-muted: #64748b; /* Slate 500 */
    --border-color: rgba(15, 23, 42, 0.08);
    --border-hover: rgba(15, 23, 42, 0.15);
    --accent-glow: rgba(16, 185, 129, 0.15);
}

body.light-theme .ambient-glow {
    background: 
        radial-gradient(circle at 10% 20%, rgba(16, 185, 129, 0.03) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(249, 115, 22, 0.02) 0%, transparent 45%);
}

body.light-theme .top-bar {
    background: rgba(255, 255, 255, 0.75);
    border-bottom: 1px solid var(--border-color);
}

body.light-theme .branding h1 {
    background: linear-gradient(135deg, #0f172a 35%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

body.light-theme .theme-switcher {
    background: rgba(15, 23, 42, 0.06);
    border-color: rgba(15, 23, 42, 0.1);
}

body.light-theme .theme-btn:hover {
    background: rgba(0, 0, 0, 0.04);
}

body.light-theme .theme-btn.active {
    background: var(--accent-color);
    color: #ffffff !important;
}

body.light-theme .glass-card {
    box-shadow: 0 10px 30px -10px rgba(15, 23, 42, 0.08);
}

body.light-theme .stat-card {
    background: rgba(255, 255, 255, 0.85);
    border-color: rgba(15, 23, 42, 0.08);
    box-shadow: 0 4px 15px -3px rgba(15, 23, 42, 0.05);
}

body.light-theme .btn-secondary {
    background: rgba(15, 23, 42, 0.03);
    border-color: var(--border-color);
    color: var(--text-color);
}

body.light-theme .btn-secondary:hover {
    background: rgba(15, 23, 42, 0.07);
    border-color: var(--border-hover);
}

body.light-theme .form-control,
body.light-theme input[type="text"],
body.light-theme input[type="number"],
body.light-theme input[type="url"],
body.light-theme select,
body.light-theme textarea {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--border-color);
    color: var(--text-color);
}

body.light-theme .form-control:focus,
body.light-theme input[type="text"]:focus,
body.light-theme input[type="number"]:focus,
body.light-theme input[type="url"]:focus,
body.light-theme select:focus,
body.light-theme textarea:focus {
    border-color: var(--accent-color);
    background: #ffffff;
}

body.light-theme .cell-input {
    background: rgba(255, 255, 255, 0.8) !important;
    border: 1px solid var(--border-color) !important;
    color: var(--text-color) !important;
}

body.light-theme .cell-input:focus {
    background: #ffffff !important;
    border-color: var(--accent-color) !important;
}

body.light-theme .poi-table th {
    background: rgba(15, 23, 42, 0.03);
    color: #475569;
}

body.light-theme .map-overlay,
body.light-theme .loading-overlay {
    background: rgba(241, 245, 249, 0.95);
}

body.light-theme .map-card {
    box-shadow: 0 10px 30px -10px rgba(15, 23, 42, 0.1);
}

/* ==============================================================================
   🌈 Dynamic Difficulty Accent Themes
   ============================================================================== */

/* Category 20K - Yellow */
body.difficulty-20k {
    --accent-color: #ffff00;
    --accent-hover: #e6e600;
    --accent-glow: rgba(255, 255, 0, 0.25);
}

/* Category 50K - Orange */
body.difficulty-50k {
    --accent-color: #ff9600;
    --accent-hover: #d87f00;
    --accent-glow: rgba(255, 150, 0, 0.25);
}

/* Category 100K - Turquoise Green */
body.difficulty-100k {
    --accent-color: #7ddf65;
    --accent-hover: #5ec346;
    --accent-glow: rgba(125, 223, 101, 0.25);
}

/* Category 100M - Red */
body.difficulty-100m {
    --accent-color: #ef4444;
    --accent-hover: #dc2626;
    --accent-glow: rgba(239, 68, 68, 0.25);
}

/* Special TDS Theme - Cyan */
body.difficulty-tds {
    --accent-color: #00ade9;
    --accent-hover: #0096cc;
    --accent-glow: rgba(0, 173, 233, 0.25);
}

/* MCC Theme - Green */
body.difficulty-mcc {
    --accent-color: #0b6938;
    --accent-hover: #09522b;
    --accent-glow: rgba(11, 105, 56, 0.25);
}

/* PTL Theme - Purple */
body.difficulty-ptl {
    --accent-color: #831f82;
    --accent-hover: #6b196a;
    --accent-glow: rgba(131, 31, 130, 0.25);
}

/* YCC Theme - Pink */
body.difficulty-ycc {
    --accent-color: #e6007e;
    --accent-hover: #cc0070;
    --accent-glow: rgba(230, 0, 126, 0.25);
}

/* Light Mode Accent Glow Adjustments */
body.light-theme.difficulty-20k {
    --accent-glow: rgba(255, 255, 0, 0.15);
}
body.light-theme.difficulty-50k {
    --accent-glow: rgba(255, 150, 0, 0.15);
}
body.light-theme.difficulty-100k {
    --accent-glow: rgba(125, 223, 101, 0.15);
}
body.light-theme.difficulty-100m {
    --accent-glow: rgba(239, 68, 68, 0.15);
}
body.light-theme.difficulty-tds {
    --accent-glow: rgba(0, 173, 233, 0.15);
}
body.light-theme.difficulty-mcc {
    --accent-glow: rgba(11, 105, 56, 0.15);
}
body.light-theme.difficulty-ptl {
    --accent-glow: rgba(131, 31, 130, 0.15);
}
body.light-theme.difficulty-ycc {
    --accent-glow: rgba(230, 0, 126, 0.15);
}

/* Leaflet Popup Theme Styling */
.leaflet-popup-content-wrapper, .leaflet-popup-tip {
    background: var(--card-bg) !important;
    border: 1px solid var(--border-color) !important;
    color: var(--text-color) !important;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.2), 0 8px 10px -6px rgba(0, 0, 0, 0.2) !important;
    backdrop-filter: blur(16px);
}

.leaflet-popup-content {
    margin: 12px 16px !important;
    line-height: 1.4;
}

.leaflet-container a.leaflet-popup-close-button {
    color: var(--text-muted) !important;
    padding: 8px 8px 0 0 !important;
}

.leaflet-container a.leaflet-popup-close-button:hover {
    color: var(--text-color) !important;
}



/* Race Info Card & Badges */
.badge-category {
    font-family: var(--font-title);
    font-size: 0.8rem;
    font-weight: 800;
    padding: 0.35rem 0.75rem;
    border-radius: 9999px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
}
.badge-category.cat-20k {
    background: linear-gradient(135deg, #ffff00, #e6e600);
}
.badge-category.cat-50k {
    background: linear-gradient(135deg, #ff9600, #d87f00);
}
.badge-category.cat-100k {
    background: linear-gradient(135deg, #7ddf65, #3f9e29);
}
.badge-category.cat-100m {
    background: linear-gradient(135deg, #ef4444, #b91c1c);
}

.badge-stones {
    background: linear-gradient(135deg, #eab308, #ca8a04);
    font-family: var(--font-title);
    font-size: 0.8rem;
    font-weight: 700;
    padding: 0.35rem 0.75rem;
    border-radius: 9999px;
    color: #0f172a;
    box-shadow: 0 2px 8px rgba(234, 179, 8, 0.2);
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

/* Dynamic Checkbox Alignment */
input[type="checkbox"] {
    accent-color: var(--accent-color) !important;
}

/* Garmin Fenix Watch Mockup for About Modal */
.garmin-watch-wrapper {
    position: relative;
    width: 240px;
    height: 240px;
    margin: 1.5rem auto;
    border-radius: 50%;
    background: #0f172a;
    border: 12px solid #1e293b;
    box-shadow: 
        0 10px 25px rgba(0, 0, 0, 0.4),
        inset 0 2px 4px rgba(255, 255, 255, 0.2),
        inset 0 -2px 4px rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.garmin-watch-screen {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #000000;
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.8);
    position: relative;
}

.garmin-watch-screen img {
    width: 105%;
    height: 105%;
    object-fit: cover;
    border-radius: 50%;
    filter: contrast(1.1) saturate(1.1);
}

.garmin-watch-wrapper::before {
    content: '';
    position: absolute;
    top: -8px; bottom: -8px; left: -8px; right: -8px;
    border-radius: 50%;
    border: 2px dashed rgba(255, 255, 255, 0.15);
    pointer-events: none;
}

/* ==============================================================================
   Aligned Info & Elevation Profile Row
   ============================================================================== */
.info-profile-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 1024px) {
    .info-profile-row {
        grid-template-columns: 480px 1fr;
    }
}

@media (min-width: 1440px) {
    .info-profile-row {
        grid-template-columns: 520px 1fr;
    }
}

.info-profile-row.no-details {
    grid-template-columns: 1fr !important;
}

/* Map Card vertical fill and full screen styles */
@media (min-width: 1024px) {
    .visualizer-panel {
        height: 100%;
    }
    .map-card {
        height: 100% !important;
        min-height: 480px;
        flex-grow: 1;
    }
}

.map-card.fullscreen-active {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    z-index: 99999 !important;
    border-radius: 0 !important;
    border: none !important;
    box-shadow: none !important;
}

/* Fullscreen Map Button styling */
.map-fullscreen-btn {
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1) !important;
}

.map-fullscreen-btn:hover {
    color: var(--accent-color) !important;
    transform: scale(1.08) !important;
}

body.light-theme .map-fullscreen-btn {
    background: rgba(255, 255, 255, 0.95) !important;
    color: #0f172a !important;
    border-color: rgba(15, 23, 42, 0.15) !important;
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.15) !important;
}

body.light-theme .map-fullscreen-btn:hover {
    background: #ffffff !important;
    color: var(--accent-color) !important;
}

/* Leaflet Zoom Control Light Theme Overrides */
body.light-theme .leaflet-bar {
    background: rgba(255, 255, 255, 0.95) !important;
    border-color: rgba(15, 23, 42, 0.15) !important;
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.1) !important;
}

body.light-theme .leaflet-bar a {
    color: #0f172a !important;
    border-bottom-color: rgba(15, 23, 42, 0.1) !important;
}

body.light-theme .leaflet-bar a:hover {
    background: rgba(15, 23, 42, 0.05) !important;
    color: var(--accent-color) !important;
}

/* ==============================================================================
   Unit Switcher Styles (km/miles)
   ============================================================================== */
.unit-switcher {
    display: flex;
    background: rgba(0, 0, 0, 0.35);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    padding: 2px;
}

body.light-theme .unit-switcher {
    background: rgba(15, 23, 42, 0.06);
    border-color: rgba(15, 23, 42, 0.1);
}

.unit-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    padding: 4px 8px;
    border-radius: 999px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    font-family: var(--font-title);
    font-size: 0.75rem;
    font-weight: 700;
}

.unit-btn:hover {
    color: var(--text-color);
    background: rgba(255, 255, 255, 0.03);
}

body.light-theme .unit-btn:hover {
    background: rgba(0, 0, 0, 0.04);
}

.unit-btn.active {
    background: var(--accent-color);
    color: #ffffff !important;
    box-shadow: 0 0 10px var(--accent-glow);
}

body.light-theme .unit-btn.active {
    background: var(--accent-color);
    color: #ffffff !important;
}

body.difficulty-20k .unit-btn.active {
    color: #0f172a !important;
}

/* Segmented Unit Switcher */
.unit-toggle {
    display: flex;
    align-items: center;
    background: rgba(17, 24, 39, 0.4);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 2px;
    cursor: pointer;
    user-select: none;
    height: 32px;
    box-sizing: border-box;
}

body.light-theme .unit-toggle {
    background: rgba(0, 0, 0, 0.05);
}

.unit-toggle span {
    padding: 0.25rem 0.6rem;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 4px;
    color: var(--text-muted);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    box-sizing: border-box;
}

.unit-toggle span.active {
    background: var(--accent-color);
    color: #ffffff !important;
}

body.difficulty-20k .unit-toggle span.active {
    color: #0f172a !important;
}

/* DEV Indicator Badge */
.dev-badge {
    background: #eab308; /* vibrant gold/yellow */
    color: #0f172a !important;
    -webkit-text-fill-color: #0f172a !important;
    font-size: 0.6rem;
    font-weight: 800;
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    margin-left: 0.5rem;
    vertical-align: middle;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-family: var(--font-title);
    box-shadow: 0 0 8px rgba(234, 179, 8, 0.4);
}

/* Beautiful Custom Dropdown Components */
.custom-dropdown {
    position: relative;
    display: inline-flex;
    width: 100%;
}

.custom-dropdown-trigger {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(0, 0, 0, 0.25);
    color: var(--text-color);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    padding: 0.75rem 1rem;
    border-radius: 20px;
    border: none !important;
    outline: none;
    cursor: pointer;
    transition: all 0.3s ease;
    user-select: none;
    box-sizing: border-box;
}

body.light-theme .custom-dropdown-trigger {
    background: rgba(255, 255, 255, 0.9);
}

.custom-dropdown-trigger:focus,
.custom-dropdown.active .custom-dropdown-trigger {
    background: rgba(0, 0, 0, 0.4);
    box-shadow: 0 0 15px var(--accent-glow);
}

body.light-theme .custom-dropdown-trigger:focus,
body.light-theme .custom-dropdown.active .custom-dropdown-trigger {
    background: #ffffff;
}

.dropdown-chevron {
    margin-left: 0.5rem;
    transition: transform 0.2s ease;
    color: var(--text-muted);
}

.custom-dropdown.active .dropdown-chevron {
    transform: rotate(180deg);
}

.custom-dropdown-list {
    position: absolute;
    top: calc(100% + 5px);
    left: 0;
    width: 100%;
    max-height: 250px;
    overflow-y: auto;
    background: rgba(17, 24, 39, 0.98) !important;
    backdrop-filter: blur(12px);
    border: none !important;
    border-radius: 12px !important;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4) !important;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
    padding: 0.4rem 0 !important;
    box-sizing: border-box;
}

body.light-theme .custom-dropdown-list {
    background: rgba(255, 255, 255, 0.98) !important;
    box-shadow: 0 10px 25px rgba(15, 23, 42, 0.08) !important;
}

.custom-dropdown.active .custom-dropdown-list {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.custom-dropdown-option {
    padding: 0.6rem 1rem;
    font-size: 0.9rem;
    color: var(--text-color);
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease;
    text-align: left;
}

.custom-dropdown-option:hover {
    background: var(--accent-color);
    color: #ffffff;
}

.custom-dropdown-option.selected {
    background: rgba(255, 255, 255, 0.08);
    font-weight: 600;
}

body.light-theme .custom-dropdown-option.selected {
    background: rgba(0, 0, 0, 0.04);
}

body.light-theme .custom-dropdown-option:hover {
    background: var(--accent-color);
    color: #ffffff;
}

/* Adjustments for header language switcher to keep it compact */
.locale-container .custom-dropdown {
    width: 65px;
}

.locale-container .custom-dropdown-trigger {
    height: 32px;
    padding: 0 0.6rem 0 0.8rem;
    font-size: 0.8rem;
    font-weight: 700;
    border-radius: 20px;
    background-color: rgba(255, 255, 255, 0.05);
}

body.light-theme .locale-container .custom-dropdown-trigger {
    background-color: rgba(0, 0, 0, 0.05);
}

/* Adjustments for table row selects */
.poi-table .custom-dropdown {
    width: 100%;
}

.poi-table .custom-dropdown-trigger {
    height: 32px;
    padding: 0 0.8rem;
    font-size: 0.8rem;
    border-radius: 20px;
    background: rgba(0, 0, 0, 0.15);
}

body.light-theme .poi-table .custom-dropdown-trigger {
    background: rgba(255, 255, 255, 0.8);
}

/* Responsive header adjustments for mobile viewports */
@media (max-width: 640px) {
    .header-container {
        flex-direction: column;
        align-items: center;
        gap: 0.75rem;
        padding: 1rem;
    }
}