/* ===================================
   ERA5 Data Downloader - Design System
   =================================== */

/* Design Tokens */
:root {
    /* Colors - Navy/Blue theme similar to reference */
    --color-primary: #1e3a5f;
    --color-primary-light: #2d5a8a;
    --color-primary-dark: #152a45;
    --color-accent: #0ea5e9;
    --color-accent-light: #38bdf8;
    --color-accent-dark: #0284c7;

    /* Neutral Colors */
    --color-white: #ffffff;
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;

    /* Semantic Colors */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;

    /* Layout */
    --sidebar-width: 400px;
    --header-height: 60px;
    --footer-height: 50px;
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--color-gray-800);
    background-color: var(--color-gray-100);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-accent-dark);
    text-decoration: underline;
}

/* ===================================
   Header
   =================================== */

.header {
    height: var(--header-height);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.header-content {
    max-width: 100%;
    height: 100%;
    padding: 0 var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    object-fit: contain;
}

.logo h1 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    letter-spacing: -0.025em;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-white);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: 500;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    opacity: 0.9;
}

.nav-link:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.1);
    text-decoration: none;
    color: var(--color-white);
}

.nav-link i {
    font-size: var(--font-size-base);
}

/* Download Badge */
.download-badge {
    position: absolute;
    top: -4px;
    right: -8px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    font-size: 11px;
    font-weight: 600;
    color: white;
    background: var(--color-error);
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
    animation: badge-pulse 2s infinite;
}

@keyframes badge-pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.1);
    }
}

#openDownloads {
    position: relative;
}

/* ===================================
   Main Layout
   =================================== */

.main-content {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: var(--footer-height);
    display: flex;
    overflow: hidden;
}

/* ===================================
   Sidebar
   =================================== */

.sidebar {
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    max-width: var(--sidebar-width);
    height: 100%;
    background: var(--color-white);
    border-right: 1px solid var(--color-gray-200);
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    padding: var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    flex-shrink: 0;
}

/* Auto-hide scrollbar */
.sidebar::-webkit-scrollbar {
    width: 6px;
}

.sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
    background: transparent;
    border-radius: 3px;
    transition: background 0.3s ease;
}

.sidebar:hover::-webkit-scrollbar-thumb {
    background: var(--color-gray-300);
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--color-gray-400);
}

/* Firefox scrollbar auto-hide */
.sidebar {
    scrollbar-width: thin;
    scrollbar-color: transparent transparent;
    transition: scrollbar-color 0.5s ease 0.5s;
}

.sidebar:hover {
    scrollbar-color: var(--color-gray-300) transparent;
    transition: scrollbar-color 0.1s ease;
}

/* ===================================
   Panels
   =================================== */

.panel {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    overflow: visible;
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
}

.panel-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4);
    background: var(--color-gray-50);
    border-bottom: 1px solid var(--color-gray-200);
}

.panel-header[data-collapsible="true"] {
    cursor: pointer;
    transition: background var(--transition-fast);
}

.panel-header[data-collapsible="true"]:hover {
    background: var(--color-gray-100);
}

.panel-header h2 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-gray-800);
    flex: 1;
}

/* Panel toggle button */
.panel-toggle {
    background: transparent;
    border: none;
    padding: var(--space-1);
    margin-left: auto;
    transition: transform var(--transition-fast);
}

.panel-toggle i {
    font-size: 14px;
    color: var(--color-gray-500);
    transition: transform 0.2s ease;
}

.panel.collapsed .panel-toggle i {
    transform: rotate(0deg);
}

.panel:not(.collapsed) .panel-toggle i {
    transform: rotate(180deg);
}

/* Collapsed panel state */
.panel.collapsed .panel-content {
    display: none;
}

.panel.collapsed .panel-header {
    border-bottom: none;
}

/* Locked panel state (not authenticated) */
.panel.locked {
    opacity: 0.6;
}

.panel.locked .panel-header[data-collapsible="true"] {
    cursor: not-allowed;
}

.panel.locked .panel-header[data-collapsible="true"]:hover {
    background: var(--color-gray-50);
}

.step-badge {
    width: 24px;
    height: 24px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.status-indicator {
    width: 10px;
    height: 10px;
    border-radius: var(--radius-full);
    background: var(--color-gray-300);
}

.status-indicator.success {
    background: var(--color-success);
}

.status-indicator.error {
    background: var(--color-error);
}

.panel-content {
    padding: var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.selected-count {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    background: var(--color-gray-100);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-md);
}

/* ===================================
   Forms
   =================================== */

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.form-group label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-gray-700);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

input[type="text"],
input[type="password"],
input[type="number"],
input[type="email"],
select {
    width: 100%;
    padding: var(--space-3);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    background: var(--color-white);
    color: var(--color-gray-800);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input:focus,
select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
}

input::placeholder {
    color: var(--color-gray-400);
}

.input-with-action {
    display: flex;
    gap: var(--space-2);
}

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

.help-text {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    line-height: 1.5;
    margin-bottom: var(--space-3);
}

.field-hint {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    margin-top: var(--space-1);
    line-height: 1.4;
}

/* Chunking Info */
.chunking-info {
    background: var(--color-gray-100);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    margin-top: calc(-1 * var(--space-3));
}

.chunking-info-header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-weight: 500;
    color: var(--color-gray-600);
    margin-bottom: var(--space-2);
    font-size: var(--font-size-sm);
}

.chunking-info-header i {
    font-size: var(--font-size-base);
    color: var(--color-gray-500);
}

.chunking-details {
    font-size: var(--font-size-xs);
    color: var(--color-gray-600);
}

.chunking-details p {
    margin-bottom: var(--space-1);
}

.chunking-details ul {
    margin: 0;
    padding-left: var(--space-5);
}

.chunking-details li {
    margin-bottom: 0;
    color: var(--color-gray-500);
    line-height: 1.4;
}

.chunking-details strong {
    color: var(--color-gray-700);
    font-weight: 600;
}

/* Data Source Selector v2 - Professional Gray/White Theme */
.data-source-selector-v2 {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.source-options-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2);
}

.source-option {
    display: flex;
    align-items: center;
    padding: var(--space-3);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.15s ease;
    position: relative;
}

.source-option:hover {
    border-color: var(--color-gray-300);
    background: var(--color-gray-50);
}

.source-option input[type="radio"] {
    display: none;
}

.source-option-content {
    flex: 1;
    min-width: 0;
}

.source-option-header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: 2px;
}

.source-icon {
    width: 16px;
    height: 16px;
    color: var(--color-gray-400);
    font-size: 14px;
    flex-shrink: 0;
}

.source-name {
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--color-gray-800);
}

.source-badge {
    font-size: 10px;
    font-weight: 500;
    color: var(--color-gray-500);
    background: var(--color-gray-100);
    padding: 2px 6px;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.source-desc {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    margin: 0;
    line-height: 1.4;
}

.source-check {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-gray-300);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-left: var(--space-2);
    transition: all 0.15s ease;
}

.source-check i {
    font-size: 10px;
    color: transparent;
    transition: color 0.15s ease;
}

/* Selected state */
.source-option input[type="radio"]:checked~.source-option-content .source-icon {
    color: var(--color-primary);
}

.source-option input[type="radio"]:checked~.source-check {
    border-color: var(--color-primary);
    background: var(--color-primary);
}

.source-option input[type="radio"]:checked~.source-check i {
    color: white;
}

.source-option:has(input[type="radio"]:checked) {
    border-color: var(--color-primary);
    background: rgba(30, 58, 95, 0.03);
}

/* Recommended option special styling */
.source-option.recommended {
    border-color: var(--color-gray-200);
}

.source-option.recommended .source-badge {
    background: var(--color-primary);
    color: white;
}

.source-option.recommended:has(input[type="radio"]:checked) {
    border-color: var(--color-primary);
    background: rgba(30, 58, 95, 0.04);
}

/* Compact variant for secondary options */
.source-option.compact {
    padding: var(--space-2) var(--space-3);
}

.source-option.compact .source-name {
    font-size: var(--font-size-xs);
}

.source-option.compact .source-desc {
    font-size: 11px;
    line-height: 1.3;
}

/* Smart mode styles - Gray/White Theme */
#smart-info {
    margin-top: calc(-1 * var(--space-3));
}

#smart-info .message.info {
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    margin-bottom: var(--space-2);
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    color: var(--color-gray-700);
}

#smart-info .message.info i {
    font-size: 1.1rem;
    margin-top: 2px;
    color: var(--color-primary);
}

#smart-info .message.info strong {
    color: var(--color-gray-800);
}

.smart-mode-details {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    padding: 0;
    margin-top: 0;
    overflow: hidden;
}

.smart-detail {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-3);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.smart-detail-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.smart-detail-sub {
    font-size: 12px;
    font-style: italic;
    color: var(--color-gray-500);
}

.smart-detail:first-child {
    padding-top: var(--space-3);
}

.smart-detail:last-child {
    padding-bottom: var(--space-3);
}

.smart-detail+.smart-detail {
    border-top: 1px solid var(--color-gray-100);
}

.smart-detail i {
    font-size: 1rem;
    width: 20px;
    text-align: center;
    flex-shrink: 0;
    margin-top: 2px;
}

.smart-detail strong {
    color: var(--color-gray-700);
}

/* Info message style */
.message.info {
    display: block;
    background: var(--color-gray-50);
    color: var(--color-gray-700);
    border: 1px solid var(--color-gray-200);
}

/* ARCO info - consistent spacing with smart-info */
#arco-info {
    margin-top: calc(-1 * var(--space-3));
}

#arco-info .message.success {
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
}

#arco-info .message.success i {
    font-size: 1.25rem;
    margin-top: 2px;
}

.message {
    font-size: var(--font-size-sm);
    padding: var(--space-3);
    border-radius: var(--radius-md);
    display: none;
}

.message.success {
    display: block;
    background: #ecfdf5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.message.error {
    display: block;
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.message.success i {
    margin-right: var(--space-2);
}

/* Auth Success State */
.auth-success-state {
    text-align: center;
    padding-bottom: 0;
}

.auth-success-state .message {
    margin-bottom: 0;
}

.btn-text {
    background: transparent;
    border: none;
    color: var(--color-gray-500);
    font-size: var(--font-size-xs);
    padding: var(--space-1) var(--space-2);
    cursor: pointer;
    transition: color var(--transition-fast);
}

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

.btn-text i {
    margin-right: var(--space-1);
}

/* ===================================
   Buttons
   =================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    text-decoration: none;
}

a.btn {
    text-decoration: none;
}

a.btn-primary {
    color: var(--color-white);
}

.btn svg {
    width: 16px;
    height: 16px;
}

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

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
    background: var(--color-primary-light);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--color-gray-100);
    color: var(--color-gray-700);
    border: 1px solid var(--color-gray-300);
    transition: all 80ms ease-out;
}

.btn-secondary:hover:not(:disabled) {
    background: var(--color-gray-200);
}

.btn-success {
    background: #10b981;
    color: var(--color-white);
    border: none;
}

.btn-success:hover:not(:disabled) {
    background: #059669;
}

.btn-secondary.active {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
    transition: all 80ms ease-out;
}

.btn-outline {
    background: transparent;
    color: var(--color-white);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-text {
    background: transparent;
    color: var(--color-accent);
    padding: var(--space-1) var(--space-2);
}

.btn-text:hover {
    background: var(--color-gray-100);
}

.btn-icon {
    padding: var(--space-2);
    background: transparent;
    color: var(--color-gray-500);
}

.btn-icon:hover {
    background: var(--color-gray-100);
    color: var(--color-gray-700);
}

.btn-large {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
}

.btn-large svg {
    width: 16px;
    height: 16px;
}

/* ===================================
   Tabs
   =================================== */

.tab-group {
    display: flex;
    gap: var(--space-1);
    background: var(--color-gray-100);
    padding: var(--space-1);
    border-radius: var(--radius-md);
}

.tab-btn {
    flex: 1;
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-xs);
    font-weight: 500;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--color-gray-600);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tab-btn:hover {
    color: var(--color-gray-800);
}

.tab-btn.active {
    background: var(--color-white);
    color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

/* ===================================
   Draw Tools
   =================================== */

.draw-tools {
    display: flex;
    gap: var(--space-2);
}

.tool-btn {
    flex: 1;
    flex-direction: column;
    gap: var(--space-1);
    padding: var(--space-3);
    font-size: var(--font-size-xs);
}

.tool-btn svg {
    width: 20px;
    height: 20px;
}

/* ===================================
   File Upload
   =================================== */

.file-upload {
    border: 2px dashed var(--color-gray-300);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.file-upload:hover {
    border-color: var(--color-accent);
    background: var(--color-gray-50);
}

.file-upload.dragover {
    border-color: var(--color-accent);
    background: rgba(14, 165, 233, 0.05);
}

.file-upload svg {
    width: 40px;
    height: 40px;
    color: var(--color-gray-400);
    margin-bottom: var(--space-2);
}

.file-upload p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.uploaded-file {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-gray-200);
}

.uploaded-file svg {
    width: 16px;
    height: 16px;
    color: var(--color-accent);
    flex-shrink: 0;
}

.uploaded-file span {
    flex: 1;
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ===================================
   Bbox Grid
   =================================== */

.bbox-grid {
    display: grid;
    grid-template-areas:
        ". north ."
        "west . east"
        ". south .";
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--space-1);
    row-gap: var(--space-1);
}

.bbox-north {
    grid-area: north;
}

.bbox-south {
    grid-area: south;
}

.bbox-east {
    grid-area: east;
}

.bbox-west {
    grid-area: west;
}

.bbox-grid label {
    font-size: var(--font-size-xs);
    margin-bottom: 2px;
}

.bbox-grid input {
    text-align: center;
    padding: var(--space-2);
    font-size: var(--font-size-sm);
}

/* ===================================
   ROI Info
   =================================== */

.roi-info {
    padding: var(--space-3);
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-gray-200);
}

.roi-info h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-gray-700);
    margin-bottom: var(--space-2);
}

.roi-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-1);
    font-size: var(--font-size-xs);
    color: var(--color-gray-600);
    font-family: monospace;
}

/* ===================================
   Checkbox
   =================================== */

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
    margin-top: var(--space-2);
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--color-primary);
}

/* Info Tooltip */
.info-tooltip {
    position: relative;
    display: inline-flex;
    align-items: center;
    margin-left: var(--space-1);
}

.info-tooltip i {
    font-size: 12px;
    color: var(--color-gray-400);
    cursor: help;
    transition: color var(--transition-fast);
}

.info-tooltip:hover i {
    color: var(--color-primary);
}

.info-tooltip .tooltip-text {
    visibility: hidden;
    opacity: 0;
    position: absolute;
    left: 100%;
    top: 50%;
    transform: translateY(-50%);
    background: var(--color-gray-800);
    color: var(--color-white);
    font-size: var(--font-size-xs);
    font-weight: 400;
    padding: var(--space-2);
    border-radius: var(--radius-md);
    width: 200px;
    text-align: left;
    white-space: normal;
    z-index: 100;
    margin-left: var(--space-2);
    box-shadow: var(--shadow-lg);
    transition: opacity var(--transition-fast), visibility var(--transition-fast);
}

.info-tooltip .tooltip-text::after {
    content: '';
    position: absolute;
    right: 100%;
    top: 50%;
    transform: translateY(-50%);
    border: 6px solid transparent;
    border-right-color: var(--color-gray-800);
}

.info-tooltip:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
}

/* ===================================
   Search Box
   =================================== */

.search-box {
    position: relative;
}

.search-box svg {
    position: absolute;
    left: var(--space-3);
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    color: var(--color-gray-400);
    pointer-events: none;
    z-index: 1;
}

.search-box input {
    padding-left: var(--space-10);
    text-indent: 0;
}

/* ===================================
   Variable Categories
   =================================== */

.variable-categories {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    max-height: 300px;
    overflow-y: auto;
}

.category {
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
}

.category-header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3);
    background: var(--color-gray-50);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.category-header:hover {
    background: var(--color-gray-100);
}

.category-header svg {
    width: 16px;
    height: 16px;
    min-width: 16px;
    color: var(--color-gray-500);
    transition: transform var(--transition-fast);
    flex-shrink: 0;
}

.category-header.expanded svg {
    transform: rotate(90deg);
}

.category-header .category-name {
    flex: 1;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-gray-700);
}

.category-count {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    background: var(--color-gray-200);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-full);
    flex-shrink: 0;
}

.category-variables {
    display: none;
    padding: var(--space-2);
    background: var(--color-white);
}

.category.expanded .category-variables {
    display: block;
}

.variable-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.variable-item:hover {
    background: var(--color-gray-50);
}

.variable-item input {
    width: 16px;
    height: 16px;
    accent-color: var(--color-primary);
}

.variable-item label {
    flex: 1;
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
    cursor: pointer;
}

/* ===================================
   Month Grid
   =================================== */

.month-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-2);
}

.month-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.month-item:hover {
    border-color: var(--color-gray-300);
    background: var(--color-gray-50);
}

.month-item.selected {
    border-color: var(--color-primary);
    background: rgba(30, 58, 95, 0.1);
}

.month-item.selected span {
    font-weight: 600;
    color: var(--color-primary);
}

.month-item input {
    display: none;
}

.month-item span {
    font-size: var(--font-size-xs);
    color: var(--color-gray-700);
}

/* Hour Grid (for hourly dataset) */
.hour-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-1);
    margin-top: var(--space-2);
    max-width: 100%;
}

.hour-item {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-1) var(--space-2);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: var(--font-size-xs);
    color: var(--color-gray-700);
}

.hour-item:hover {
    border-color: var(--color-gray-300);
    background: var(--color-gray-50);
}

.hour-item.selected {
    border-color: var(--color-primary);
    background: rgba(30, 58, 95, 0.1);
    font-weight: 600;
    color: var(--color-primary);
}

.hour-item input {
    display: none;
}

.hour-actions {
    display: flex;
    gap: var(--space-2);
    margin-top: var(--space-2);
}

.month-actions {
    display: flex;
    gap: var(--space-2);
    margin-top: var(--space-1);
}

/* ===================================
   Map Container
   =================================== */

.map-container {
    flex: 1;
    height: 100%;
    position: relative;
    background: var(--color-gray-200);
    min-width: 0;
}

.map {
    width: 100%;
    height: 100%;
}

.map-controls {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    z-index: 10;
    pointer-events: auto;
}

.map-control-btn {
    background: var(--color-white);
    box-shadow: var(--shadow-md);
    padding: var(--space-2);
}

.map-control-btn:hover {
    background: var(--color-gray-50);
}

.map-control-btn.active {
    background: var(--color-primary);
}

.map-control-btn.active i,
.map-control-btn.active svg {
    color: var(--color-white);
}

.map-control-btn svg {
    width: 18px;
    height: 18px;
    color: var(--color-gray-700);
}

.map-control-btn i {
    font-size: 18px;
    color: var(--color-gray-700);
}

.map-coords {
    position: absolute;
    bottom: var(--space-2);
    left: var(--space-2);
    background: rgba(255, 255, 255, 0.9);
    padding: 4px 8px;
    border-radius: var(--radius-md);
    font-size: 11px;
    color: var(--color-gray-600);
    display: flex;
    gap: var(--space-3);
    box-shadow: var(--shadow-sm);
    z-index: 10;
}

.map-coords strong {
    color: var(--color-gray-900);
    font-weight: 600;
}

.map-attribution {
    position: absolute;
    bottom: var(--space-2);
    right: var(--space-2);
}

.attribution-toggle {
    background: var(--color-white);
    border: none;
    border-radius: var(--radius-full);
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
}

.attribution-toggle:hover {
    background: var(--color-white);
}

.attribution-toggle i {
    font-size: 10px;
    color: var(--color-gray-500);
}

.attribution-content {
    position: absolute;
    right: 32px;
    bottom: 0;
    display: none;
    padding: var(--space-1) var(--space-2);
    font-size: var(--font-size-xs);
    color: var(--color-gray-600);
    white-space: nowrap;
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.map-attribution:hover .attribution-content {
    display: block;
}

/* ===================================
   Download Panel (Footer)
   =================================== */

.download-panel {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50px;
    background: var(--color-white);
    border-top: 1px solid var(--color-gray-200);
    box-shadow: 0 -2px 4px rgb(0 0 0 / 0.05);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-4);
    z-index: 999;
}

.download-summary {
    display: flex;
    gap: var(--space-6);
}

.summary-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.summary-label {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.summary-value {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-gray-800);
}

/* ===================================
   Modal
   =================================== */

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 500px;
    max-height: 80vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-6);
    border-bottom: 1px solid var(--color-gray-200);
}

.modal-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-gray-800);
}

.modal-close {
    color: var(--color-gray-400);
}

.modal-close:hover {
    color: var(--color-gray-600);
}

.modal-body {
    padding: var(--space-4) var(--space-6);
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    padding: var(--space-1) var(--space-6) var(--space-4);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-3);
}

/* ===================================
   Downloads Modal
   =================================== */

.downloads-content {
    max-height: 60vh;
    overflow-y: auto;
}

.downloads-summary {
    display: flex;
    gap: var(--space-3);
    padding: var(--space-3);
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-4);
}

.summary-stat {
    flex: 1;
    text-align: center;
    padding: var(--space-2);
}

.summary-stat .stat-value {
    display: block;
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
}

.summary-stat .stat-label {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: var(--space-1);
}

.downloads-section {
    margin-bottom: var(--space-4);
}

.downloads-section:last-child {
    margin-bottom: 0;
}

.section-header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-2);
}

.section-header h4 {
    margin: 0;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-gray-700);
}

.section-header h4 i {
    margin-right: var(--space-1);
    color: var(--color-primary);
}

.section-badge {
    background: var(--color-gray-200);
    color: var(--color-gray-600);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.downloads-list {
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    overflow: hidden;
    max-height: 200px;
    overflow-y: auto;
}

.download-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3);
    background: white;
    border-bottom: 1px solid var(--color-gray-100);
}

.download-item:last-child {
    border-bottom: none;
}

.download-item .item-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.download-item .item-icon.cds {
    background: #e0f2fe;
    color: #0284c7;
}

.download-item .item-icon.arco {
    background: #fef3c7;
    color: #d97706;
}

.download-item .item-icon.completed {
    background: #dcfce7;
    color: #16a34a;
}

.download-item .item-icon.failed {
    background: #fee2e2;
    color: #dc2626;
}

.download-item .item-details {
    flex: 1;
    min-width: 0;
}

.download-item .item-name {
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--color-gray-800);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.download-item .item-meta {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    margin-top: 2px;
}

.download-item .item-status {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--font-size-xs);
    font-weight: 500;
    padding: 4px 8px;
    border-radius: var(--radius-full);
}

.download-item .item-status.queued {
    background: #f3f4f6;
    color: #6b7280;
}

.download-item .item-status.running {
    background: #dbeafe;
    color: #2563eb;
}

.download-item .item-status.completed {
    background: #dcfce7;
    color: #16a34a;
}

.download-item .item-status.failed {
    background: #fee2e2;
    color: #dc2626;
}

.download-item .item-status i {
    font-size: 10px;
}

.download-item .item-progress {
    flex-shrink: 0;
    width: 120px;
}

.download-item .progress-info {
    font-size: 11px;
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: 2px;
    text-align: center;
}

.download-item .mini-progress {
    height: 4px;
    background: var(--color-gray-200);
    border-radius: 2px;
    overflow: hidden;
}

.download-item .mini-progress-fill {
    height: 100%;
    background: var(--color-primary);
    border-radius: 2px;
    transition: width 0.3s ease;
}

/* Animated stripes for active downloads */
.download-item .mini-progress-fill.animated {
    background: linear-gradient(90deg,
            var(--color-primary) 0%,
            var(--color-primary) 40%,
            #60a5fa 50%,
            var(--color-primary) 60%,
            var(--color-primary) 100%);
    background-size: 200% 100%;
    animation: shimmer 1.5s ease-in-out infinite;
}

@keyframes shimmer {
    0% {
        background-position: 100% 0;
    }

    100% {
        background-position: -100% 0;
    }
}

.empty-state {
    padding: var(--space-4);
    text-align: center;
    color: var(--color-gray-400);
}

.empty-state i {
    font-size: 24px;
    margin-bottom: var(--space-2);
}

.empty-state p {
    margin: 0;
    font-size: var(--font-size-sm);
}

/* ===================================
   Progress
   =================================== */

.progress-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--space-2);
}

.progress-info span {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

#progress-percent {
    font-weight: 600;
    color: var(--color-primary);
}

.progress-bar {
    height: 8px;
    background: var(--color-gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
    border-radius: var(--radius-full);
    width: 0%;
    transition: width var(--transition-base);
}

.progress-details {
    display: flex;
    justify-content: space-between;
    margin-top: var(--space-2);
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

/* Success State */
#success-state {
    text-align: center;
    padding: 0;
}

.success-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-3);
    background: var(--color-success-light, #dcfce7);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

.success-icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--color-success, #22c55e);
}

#success-state h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-gray-800);
    margin-bottom: var(--space-2);
}

.success-message {
    color: var(--color-gray-600);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-3);
    line-height: 1.4;
}

.btn-cds-link {
    margin: var(--space-2) 0 var(--space-3);
}

.btn-cds-link i {
    font-size: 14px;
}

.note-text {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    text-align: center;
    line-height: 1.4;
    margin-bottom: 0;
}

.note-text i {
    color: var(--color-gray-400);
    margin-right: var(--space-1);
}

/* Error State */
#error-state {
    text-align: center;
    padding: var(--space-4) 0;
}

.error-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-4);
    background: var(--color-error-light, #fee2e2);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

.error-icon svg {
    width: 32px;
    height: 32px;
    stroke: var(--color-error, #ef4444);
}

#error-state h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-gray-800);
    margin-bottom: var(--space-2);
}

.error-message {
    color: var(--color-error, #ef4444);
    line-height: 1.5;
}

/* Progress bar success state */
.progress-fill.success {
    background: linear-gradient(90deg, #22c55e 0%, #16a34a 100%);
}

.download-files {
    margin-top: var(--space-6);
}

.download-files h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-gray-700);
    margin-bottom: var(--space-3);
}

.download-files ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.download-files li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-2) var(--space-3);
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
}

.download-files li span {
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
}

.download-files li a {
    font-size: var(--font-size-sm);
}

/* ===================================
   Scrollbar
   =================================== */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--color-gray-300);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-gray-400);
}

/* ===================================
   Responsive - Mobile First Approach
   =================================== */

/* Tablet (1024px and below) */
@media (max-width: 1024px) {
    :root {
        --sidebar-width: 350px;
    }
}

/* Small tablets and large phones (768px and below) */
@media (max-width: 768px) {
    :root {
        --header-height: 56px;
        --footer-height: auto;
    }

    /* Header */
    .header-content {
        padding: 0 var(--space-3);
    }

    .logo h1 {
        font-size: var(--font-size-base);
    }

    .logo-icon {
        width: 32px;
        height: 32px;
    }

    .header-nav {
        gap: var(--space-2);
    }

    .nav-link {
        padding: var(--space-2);
        font-size: var(--font-size-xs);
    }

    .nav-link span {
        display: none;
    }

    .nav-link i {
        font-size: var(--font-size-lg);
    }

    /* Main Layout - Stack vertically */
    .main-content {
        flex-direction: column;
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        bottom: 60px;
    }

    .sidebar {
        width: 100%;
        min-width: 100%;
        max-width: 100%;
        height: auto;
        max-height: 55vh;
        flex-shrink: 0;
        border-right: none;
        border-bottom: 1px solid var(--color-gray-200);
        padding: var(--space-3);
        gap: var(--space-3);
    }

    .map-container {
        flex: 1;
        min-height: 180px;
    }

    /* Panels */
    .panel {
        border-radius: var(--radius-lg);
    }

    .panel-header {
        padding: var(--space-3);
        min-height: 48px;
    }

    .panel-header h2 {
        font-size: var(--font-size-sm);
    }

    .step-badge {
        width: 22px;
        height: 22px;
        font-size: var(--font-size-xs);
    }

    .panel-content {
        padding: var(--space-3);
        gap: var(--space-3);
    }

    /* Forms - Touch friendly */
    .form-group {
        margin-bottom: var(--space-3);
    }

    input[type="text"],
    input[type="password"],
    input[type="number"],
    input[type="email"],
    select {
        padding: var(--space-3);
        font-size: var(--font-size-base);
        min-height: 44px;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: var(--space-3);
    }

    /* Buttons - Touch friendly (44px min) */
    .btn {
        min-height: 44px;
        padding: var(--space-3) var(--space-4);
    }

    .btn-icon {
        min-width: 44px;
        min-height: 44px;
    }

    /* Tabs */
    .tab-group {
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .tab-btn {
        padding: var(--space-2) var(--space-3);
        font-size: 12px;
        font-weight: 500;
        white-space: nowrap;
        min-height: 44px;
    }

    /* Draw Tools */
    .draw-tools {
        flex-wrap: wrap;
    }

    .tool-btn {
        flex: 1 1 calc(33.33% - var(--space-2));
        min-width: 70px;
        padding: var(--space-1);
        min-height: 36px;
    }

    .tool-btn svg {
        width: 18px;
        height: 18px;
    }

    /* File Upload */
    .file-upload {
        padding: var(--space-4);
    }

    .file-upload svg {
        width: 32px;
        height: 32px;
    }

    /* Bbox Grid - Larger text for readability */
    .bbox-grid {
        gap: var(--space-2);
    }

    .bbox-grid label {
        font-size: 13px;
        font-weight: 500;
    }

    .bbox-grid input {
        padding: var(--space-2);
        font-size: 14px;
        min-height: 44px;
    }

    /* Month Grid - 3 columns on tablet */
    .month-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-1);
    }

    .month-item {
        padding: var(--space-2);
        min-height: 44px;
        justify-content: center;
    }

    .month-item span {
        font-size: 13px;
        font-weight: 500;
    }

    /* Hour Grid - 4 columns */
    .hour-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .hour-item {
        min-height: 36px;
    }

    /* Variable Categories */
    .variable-categories {
        max-height: 200px;
    }

    .category-header {
        padding: var(--space-2) var(--space-3);
        min-height: 44px;
    }

    .variable-item {
        padding: var(--space-2);
        min-height: 40px;
    }

    /* Download Panel */
    .download-panel {
        height: auto;
        min-height: 60px;
        padding: var(--space-2) var(--space-3);
        flex-direction: column;
        gap: var(--space-2);
    }

    .download-summary {
        gap: var(--space-3);
        width: 100%;
        justify-content: space-around;
    }

    .summary-item {
        flex-direction: column;
        align-items: center;
        gap: 2px;
    }

    .summary-item:nth-child(3),
    .summary-item:nth-child(4) {
        display: none;
    }

    .summary-label {
        font-size: 10px;
    }

    .summary-value {
        font-size: var(--font-size-sm);
    }

    #start-download {
        width: 100%;
    }

    /* Map Controls - Compact for mobile */
    .map-controls {
        top: var(--space-2);
        right: var(--space-2);
        flex-direction: row;
        flex-wrap: wrap;
        gap: 4px;
        max-width: calc(100% - var(--space-4));
        justify-content: flex-end;
    }

    .map-control-btn {
        min-width: 28px;
        min-height: 28px;
        width: 28px;
        height: 28px;
        padding: 5px;
    }

    .map-control-btn svg,
    .map-control-btn i {
        width: 16px;
        height: 16px;
        font-size: 16px;
    }

    /* Modal - Nearly full screen */
    .modal-content {
        max-width: calc(100% - var(--space-4));
        max-height: 90vh;
        margin: var(--space-2);
        border-radius: var(--radius-lg);
    }

    .modal-header {
        padding: var(--space-3) var(--space-4);
    }

    .modal-header h3 {
        font-size: var(--font-size-base);
    }

    .modal-body {
        padding: var(--space-3) var(--space-4);
    }

    .modal-footer {
        padding: var(--space-3) var(--space-4);
    }

    /* About Modal */
    .about-content {
        padding: var(--space-3);
    }

    .about-section {
        margin-bottom: var(--space-4);
    }

    .about-section h4 {
        font-size: var(--font-size-sm);
    }

    /* Dataset Cards */
    .dataset-card {
        padding: var(--space-3);
    }

    .dataset-card-title {
        font-size: var(--font-size-sm);
        padding-right: var(--space-6);
    }

    /* Access Gate */
    .access-modal {
        max-width: calc(100% - var(--space-4));
        margin: var(--space-2);
    }

    .access-header {
        padding: var(--space-6) var(--space-4) var(--space-3);
    }

    .access-logo {
        width: 56px;
        height: 56px;
    }

    .access-header h2 {
        font-size: var(--font-size-lg);
    }

    .access-body {
        padding: var(--space-4);
    }

    /* Tooltips - Hide on mobile (use tap instead) */
    .info-tooltip .tooltip-text {
        display: none;
    }

    /* Profile Card */
    .profile-header {
        flex-wrap: wrap;
        gap: var(--space-3);
    }

    .profile-avatar {
        width: 48px;
        height: 48px;
    }

    .profile-logo {
        height: 32px;
        order: 3;
        margin-top: var(--space-2);
    }
}

/* Phones (480px and below) */
@media (max-width: 480px) {
    :root {
        --header-height: 52px;
    }

    /* Header */
    .logo {
        gap: var(--space-2);
    }

    .logo h1 {
        font-size: var(--font-size-sm);
    }

    .logo-icon {
        width: 28px;
        height: 28px;
    }

    /* Main content adjustments */
    .sidebar {
        max-height: 50vh;
        padding: var(--space-2);
        gap: var(--space-2);
    }

    .map-container {
        min-height: 150px;
    }

    /* Panels */
    .panel-header {
        padding: var(--space-2) var(--space-3);
    }

    .panel-content {
        padding: var(--space-2) var(--space-3);
    }

    /* Form Row - Always stack */
    .form-row {
        grid-template-columns: 1fr;
    }

    /* Month Grid - 4 columns on phones */
    .month-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 4px;
    }

    .month-item {
        padding: var(--space-2);
        min-height: 42px;
    }

    .month-item span {
        font-size: 13px !important;
        font-weight: 600;
    }

    /* Hour Grid - 6 columns on phones for compactness */
    .hour-grid {
        grid-template-columns: repeat(6, 1fr);
        gap: 2px;
    }

    .hour-item {
        padding: var(--space-1);
        min-height: 32px;
        font-size: 10px;
    }

    /* Bbox Grid - Larger text for mobile */
    .bbox-grid {
        gap: 8px;
    }

    .bbox-grid label {
        font-size: 14px !important;
        font-weight: 600;
        display: block;
        margin-bottom: 4px;
    }

    .bbox-grid input {
        padding: var(--space-2) var(--space-3);
        font-size: 15px !important;
        min-height: 44px;
    }

    /* Tabs - Draw on Map, Upload, Enter coordinates */
    .tab-btn {
        font-size: 12px;
        padding: var(--space-2) var(--space-3);
        font-weight: 500;
    }

    /* Draw Tools - Rectangle, Polygon, Clear */
    .tool-btn {
        padding: var(--space-1);
        font-size: 11px;
        font-weight: 500;
        min-height: 32px;
    }

    .tool-btn svg {
        width: 16px;
        height: 16px;
    }

    /* Hide search icon on mobile */
    .search-box svg {
        display: none;
    }

    .search-box input {
        padding-left: var(--space-3);
    }

    /* Variable Categories */
    .variable-categories {
        max-height: 180px;
    }

    .category-header {
        padding: var(--space-2);
    }

    .category-name {
        font-size: var(--font-size-xs);
    }

    /* Download Panel */
    .download-panel {
        padding: var(--space-2);
    }

    .download-summary {
        gap: var(--space-2);
    }

    .summary-item:nth-child(2) {
        display: none;
    }

    #start-download {
        font-size: var(--font-size-sm);
        min-height: 44px;
    }

    /* Modal - Full screen on small phones */
    .modal-content {
        max-width: 100%;
        max-height: 100%;
        height: 100%;
        margin: 0;
        border-radius: 0;
    }

    .modal-large {
        max-width: 100%;
    }

    /* Access Gate */
    .access-gate {
        padding: var(--space-4);
        align-items: center;
    }

    .access-modal {
        max-width: 100%;
        height: auto;
        max-height: 90vh;
        margin: 0;
        border-radius: var(--radius-xl);
    }

    .access-header {
        padding: var(--space-4);
    }

    .access-body {
        padding: var(--space-4);
    }

    /* Profile Card */
    .profile-header {
        flex-direction: column;
        text-align: center;
    }

    .profile-avatar {
        width: 56px;
        height: 56px;
    }

    .profile-info {
        text-align: center;
    }

    .profile-name {
        font-size: 16px;
        font-weight: 600;
    }

    .profile-title {
        font-size: 13px;
    }

    .profile-org {
        font-size: 13px;
        line-height: 1.6;
    }

    .profile-logo {
        order: 0;
        height: 40px;
        margin-top: 0;
        margin-bottom: var(--space-2);
    }

    .profile-links {
        justify-content: center;
    }

    .profile-links a {
        font-size: 12px;
        padding: var(--space-2) var(--space-3);
    }

    /* Dataset info */
    .dataset-info-item p {
        font-size: 11px;
    }

    /* References */
    .references-list li {
        font-size: 11px;
    }
}

/* Small phones (360px and below) */
@media (max-width: 360px) {
    .logo h1 {
        font-size: var(--font-size-xs);
    }

    .header-nav {
        gap: var(--space-1);
    }

    .nav-link {
        padding: var(--space-1);
    }

    .month-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .hour-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .draw-tools {
        flex-direction: column;
    }

    .tool-btn {
        flex: 1;
        flex-direction: row;
        justify-content: center;
    }
}

/* Landscape orientation on mobile */
@media (max-width: 768px) and (orientation: landscape) {
    .main-content {
        flex-direction: row;
    }

    .sidebar {
        width: 45%;
        min-width: 45%;
        max-width: 45%;
        max-height: 100%;
        border-right: 1px solid var(--color-gray-200);
        border-bottom: none;
    }

    .map-container {
        flex: 1;
    }

    .download-panel {
        flex-direction: row;
        padding: var(--space-2) var(--space-4);
    }

    .download-summary {
        width: auto;
    }

    #start-download {
        width: auto;
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {

    /* Larger tap targets */
    .btn {
        min-height: 44px;
    }

    .btn-icon {
        min-width: 44px;
        min-height: 44px;
    }

    /* Remove hover effects that don't work on touch */
    .panel-header[data-collapsible="true"]:hover {
        background: var(--color-gray-50);
    }

    .category-header:hover {
        background: var(--color-gray-50);
    }

    .variable-item:hover {
        background: transparent;
    }

    .month-item:hover {
        border-color: var(--color-gray-200);
        background: transparent;
    }

    /* Add active states for touch feedback */
    .btn:active {
        transform: scale(0.98);
    }

    .panel-header[data-collapsible="true"]:active {
        background: var(--color-gray-100);
    }

    .tab-btn:active {
        background: var(--color-gray-200);
    }

    .month-item:active,
    .hour-item:active {
        background: var(--color-gray-100);
    }

    /* Disable text selection on interactive elements */
    .btn,
    .tab-btn,
    .tool-btn,
    .month-item,
    .hour-item,
    .category-header,
    .panel-header {
        -webkit-user-select: none;
        user-select: none;
        -webkit-tap-highlight-color: transparent;
    }
}

/* High DPI screens - Ensure crisp rendering */
@media (-webkit-min-device-pixel-ratio: 2),
(min-resolution: 192dpi) {

    .logo-icon,
    .access-logo,
    .profile-avatar,
    .profile-logo {
        image-rendering: -webkit-optimize-contrast;
    }
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ===================================
   Contact Modal
   =================================== */

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.contact-info>p {
    color: var(--color-gray-600);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-2);
}

.contact-card {
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
}

.contact-card .contact-header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-2);
    color: var(--color-primary);
}

.contact-card .contact-header i {
    font-size: var(--font-size-base);
}

.contact-card .contact-header strong {
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.contact-card p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
    margin: var(--space-1) 0;
}

.contact-card p i {
    color: var(--color-gray-500);
    margin-right: var(--space-2);
    width: 16px;
}

/* Profile Card */
.profile-card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
}

.profile-header {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--color-gray-200);
}

.profile-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--color-gray-200);
}

.profile-info {
    flex: 1;
}

.profile-title {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    margin-bottom: 2px;
}

.profile-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-gray-800);
    margin: 0;
}

.profile-logo {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.profile-org {
    padding: var(--space-3) 0;
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    line-height: 1.5;
}

.profile-links {
    display: flex;
    gap: var(--space-2);
    padding-top: var(--space-2);
    border-top: 1px solid var(--color-gray-200);
}

.profile-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    color: var(--color-gray-500);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.profile-links a:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-gray-50);
}

.profile-links a i {
    font-size: 16px;
}

/* ===================================
   About Modal
   =================================== */

.modal-large {
    max-width: 700px;
}

.about-content {
    padding: var(--space-4) var(--space-6);
}

.about-section {
    margin-bottom: var(--space-6);
}

.about-section:last-child {
    margin-bottom: 0;
}

.about-section h4 {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-3);
    padding-bottom: var(--space-2);
    border-bottom: 1px solid var(--color-gray-200);
}

.about-section h4 i {
    font-size: var(--font-size-sm);
}

.about-section p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
    line-height: 1.6;
    margin-bottom: var(--space-2);
}

.about-section p:last-child {
    margin-bottom: 0;
}

.about-section a {
    color: var(--color-accent-dark);
    text-decoration: none;
}

.about-section a:hover {
    text-decoration: underline;
}

/* Dataset Info List */
.dataset-info-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.dataset-info-item {
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--space-3);
}

.dataset-info-item strong {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-gray-800);
    margin-bottom: var(--space-1);
}

.dataset-info-item p {
    font-size: var(--font-size-xs);
    color: var(--color-gray-600);
    line-height: 1.5;
    margin-bottom: var(--space-2);
}

.dataset-meta {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    margin-bottom: var(--space-2);
}

.dataset-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--font-size-xs);
    color: var(--color-accent-dark);
    text-decoration: none;
}

.dataset-link:hover {
    text-decoration: underline;
}

.dataset-link i {
    font-size: 10px;
}

/* Attribution Box */
.attribution-box {
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    margin-top: var(--space-2);
}

.attribution-box p {
    margin: 0;
}

.attribution-box p:first-child {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-gray-700);
    margin-bottom: var(--space-1);
}

.attribution-text {
    font-style: italic;
    color: var(--color-gray-600);
}

/* Disclaimer Section */
.disclaimer-section {
    background: #fef3c7;
    border: 1px solid #fcd34d;
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    margin-bottom: var(--space-6);
}

.disclaimer-section h4 {
    color: #92400e;
    border-bottom-color: #fcd34d;
}

.disclaimer-section p {
    color: #78350f;
}

/* Citation intro */
.citation-intro {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin-bottom: var(--space-3);
}

/* References List */
.references-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.references-list li {
    font-size: var(--font-size-xs);
    color: var(--color-gray-700);
    line-height: 1.6;
    padding: var(--space-2) 0;
    border-bottom: 1px solid var(--color-gray-100);
}

.references-list li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.references-list li strong {
    display: block;
    color: var(--color-gray-800);
    margin-bottom: 2px;
}

.references-list li a {
    color: var(--color-accent-dark);
    text-decoration: none;
    font-weight: 500;
}

.references-list li a:hover {
    text-decoration: underline;
}

/* ===================================
   Dataset Selection
   =================================== */

.dataset-options {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.dataset-card {
    position: relative;
    background: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--space-3);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.dataset-card:hover {
    border-color: var(--color-gray-300);
    background: var(--color-gray-50);
}

.dataset-card.selected {
    border-color: var(--color-primary);
    background: rgba(59, 130, 246, 0.04);
}

.dataset-card.selected::before {
    content: '';
    position: absolute;
    top: var(--space-2);
    right: var(--space-2);
    width: 20px;
    height: 20px;
    background: var(--color-primary);
    border-radius: 50%;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E");
    background-size: 12px;
    background-position: center;
    background-repeat: no-repeat;
}

.dataset-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: var(--space-2);
}

.dataset-card-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-gray-800);
    margin: 0;
}

.dataset-card-badges {
    display: flex;
    gap: var(--space-1);
    flex-wrap: wrap;
    margin-top: var(--space-1);
}

.dataset-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    background: var(--color-gray-100);
    border-radius: var(--radius-full);
    font-size: 11px;
    color: var(--color-gray-600);
    white-space: nowrap;
}

.dataset-badge i {
    font-size: 10px;
}

.dataset-badge.resolution {
    background: #dbeafe;
    color: #1e40af;
}

.dataset-badge.temporal {
    background: #dcfce7;
    color: #166534;
}

.dataset-card-desc {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    margin: var(--space-2) 0 0 0;
    line-height: 1.4;
}

.dataset-card-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    color: var(--color-primary);
    text-decoration: none;
    margin-top: var(--space-2);
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.dataset-card-link:hover {
    opacity: 1;
    text-decoration: underline;
}

.dataset-card-link i {
    font-size: 10px;
}

.selected-dataset-badge {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    background: var(--color-gray-100);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    margin-left: auto;
    margin-right: var(--space-2);
}

/* ===================================
   Access Gate
   =================================== */

.access-gate {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
}

.access-gate.hidden {
    display: none;
}

.access-modal {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 420px;
    overflow: hidden;
}

.access-header {
    text-align: center;
    padding: var(--space-8) var(--space-6) var(--space-4);
    background: var(--color-gray-50);
    border-bottom: 1px solid var(--color-gray-200);
}

.access-logo {
    width: 72px;
    height: 72px;
    margin-bottom: var(--space-4);
    border-radius: var(--radius-lg);
}

.access-header h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-gray-800);
    margin-bottom: var(--space-2);
}

.access-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    line-height: 1.5;
    margin: 0;
}

.access-body {
    padding: var(--space-6);
}

.access-input-wrapper {
    position: relative;
    margin-bottom: var(--space-4);
}

.access-input-wrapper input {
    width: 100%;
    padding: var(--space-4);
    padding-right: var(--space-12);
    font-size: var(--font-size-base);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-lg);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.access-input-wrapper input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(30, 58, 95, 0.1);
}

.toggle-password-btn {
    position: absolute;
    right: var(--space-3);
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: var(--color-gray-400);
    cursor: pointer;
    padding: var(--space-2);
    transition: color var(--transition-fast);
}

.toggle-password-btn:hover {
    color: var(--color-gray-600);
}

.access-error {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3);
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: var(--radius-md);
    margin-bottom: var(--space-4);
    color: #991b1b;
    font-size: var(--font-size-sm);
}

.access-error i {
    flex-shrink: 0;
}

.access-btn {
    width: 100%;
    padding: var(--space-4);
    font-size: var(--font-size-base);
    gap: var(--space-2);
}

.access-btn i {
    font-size: var(--font-size-base);
}

.access-footer {
    padding: var(--space-4) var(--space-6);
    background: var(--color-gray-50);
    border-top: 1px solid var(--color-gray-200);
    text-align: center;
}

.access-footer p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    margin: 0;
}

.access-footer a {
    color: var(--color-primary);
    font-weight: 500;
    text-decoration: none;
}

.access-footer a:hover {
    text-decoration: none;
}