:root {
    /* Material Design 3 Color System - Enhanced Vibrancy */
    /* Primary Colors - Vibrant Blue with Gradient */
    --md-primary: #0284c7;           /* Vibrant Sky Blue */
    --md-primary-light: #00d4ff;     /* Bright Cyan */
    --md-primary-dark: #0066cc;      /* Deep Blue */
    --md-primary-container: #cce5ff;
    --md-on-primary: #ffffff;
    --md-on-primary-container: #001d3c;

    /* Secondary Colors - Deep Purple/Slate */
    --md-secondary: #6b21a8;         /* Vibrant Purple */
    --md-secondary-light: #8b5cf6;   /* Light Purple */
    --md-secondary-dark: #5a189a;    /* Deep Purple */
    --md-secondary-container: #c1d8f0;
    --md-on-secondary: #ffffff;
    --md-on-secondary-container: #0a1226;

    /* Tertiary Colors - Vibrant Gradient */
    --md-tertiary: #f59e0b;          /* Vibrant Amber */
    --md-tertiary-light: #fbbf24;    /* Bright Amber */
    --md-tertiary-dark: #d97706;     /* Deep Amber */
    --md-tertiary-container: #fde68a;
    --md-on-tertiary: #ffffff;
    --md-on-tertiary-container: #78350f;
    
    /* Accent Colors - Vibrant */
    --md-accent-pink: #ec4899;       /* Vibrant Pink */
    --md-accent-cyan: #06b6d4;       /* Vibrant Cyan */
    --md-accent-green: #10b981;      /* Vibrant Emerald */

    /* Neutral Colors */
    --md-surface: #ffffff;
    --md-surface-dim: #ded9e0;
    --md-surface-bright: #fffbfe;
    --md-surface-container-lowest: #ffffff;
    --md-surface-container-low: #f0f4f8;
    --md-surface-container: #e8eef6;
    --md-surface-container-high: #e0e6f0;
    --md-surface-container-highest: #d9dff0;

    --md-on-surface: #1c1b1f;
    --md-on-surface-variant: #49454f;
    
    --md-outline: #79747e;
    --md-outline-variant: #cac7d0;
    --md-background: #f8f9fb;
    --md-error: #e63946;
    --md-error-container: #f9dedc;
    --md-on-error: #ffffff;
    --md-on-error-container: #410e0b;

    /* Success (custom) */
    --md-success: #10b981;
    --md-success-container: #d1fae5;
    --md-on-success: #ffffff;
    --md-on-success-container: #022c21;

    /* Warning (custom) */
    --md-warning: #f97316;
    --md-warning-container: #fef3c7;
    --md-on-warning: #ffffff;
    --md-on-warning-container: #451a03;

    /* Gloss & Vibrancy Effects */
    --gloss-shadow: 0 8px 32px rgba(0, 0, 0, 0.1), inset 0 1px 2px rgba(255, 255, 255, 0.8);
    --gloss-shadow-hover: 0 12px 48px rgba(2, 132, 199, 0.25), inset 0 1px 3px rgba(255, 255, 255, 0.9);
    --shadow-glow: 0 0 20px rgba(2, 132, 199, 0.15);

    /* State Layers */
    --md-state-layer-hover: rgba(2, 132, 199, 0.08);
    --md-state-layer-focus: rgba(2, 132, 199, 0.12);
    --md-state-layer-pressed: rgba(2, 132, 199, 0.16);

    /* Elevation (Shadow) Tokens - Enhanced Gloss */
    --md-shadow-none: none;
    --md-shadow-1: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --md-shadow-2: 0 4px 12px rgba(0, 0, 0, 0.08), inset 0 1px 2px rgba(255, 255, 255, 0.5);
    --md-shadow-3: 0 8px 20px rgba(0, 0, 0, 0.1), inset 0 1px 3px rgba(255, 255, 255, 0.6);
    --md-shadow-4: 0 12px 32px rgba(0, 0, 0, 0.12), inset 0 1px 4px rgba(255, 255, 255, 0.7);
    --md-shadow-5: 0 16px 48px rgba(0, 0, 0, 0.15), inset 0 1px 6px rgba(255, 255, 255, 0.8);

    /* Spacing (8px base grid) */
    --spacing-x: 4px;
    --spacing-1: 4px;
    --spacing-2: 8px;
    --spacing-3: 12px;
    --spacing-4: 16px;
    --spacing-5: 20px;
    --spacing-6: 24px;
    --spacing-7: 28px;
    --spacing-8: 32px;
    --spacing-9: 36px;
    --spacing-10: 40px;

    /* Border Radius - Material Design 3 */
    --radius-xs: 4px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 28px;
    --radius-full: 99999px;

    /* Typography Scale - Material Design 3 */
    --font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display-large: 57px / 64px;
    --font-display-medium: 45px / 52px;
    --font-display-small: 36px / 44px;
    --font-headline-large: 32px / 40px;
    --font-headline-medium: 28px / 36px;
    --font-headline-small: 24px / 32px;
    --font-title-large: 22px / 28px;
    --font-title-medium: 16px / 24px;
    --font-title-small: 14px / 20px;
    --font-body-large: 16px / 24px;
    --font-body-medium: 14px / 20px;
    --font-body-small: 12px / 16px;
    --font-label-large: 14px / 20px;
    --font-label-medium: 12px / 16px;
    --font-label-small: 11px / 16px;

    /* Layout */
    --header-height: 64px;
    --container-width: 1280px;
}

/* ============================================
   GLOBAL STYLES
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--md-background);
    color: var(--md-on-surface);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    color: var(--md-on-surface);
    font-weight: 700;
    line-height: 1.2;
}

h1 { font-size: 32px; }
h2 { font-size: 28px; }
h3 { font-size: 24px; }
h4 { font-size: 18px; }
h5 { font-size: 16px; }
h6 { font-size: 14px; }

p {
    color: var(--md-on-surface-variant);
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: var(--md-primary);
    transition: color 0.2s ease;
    cursor: pointer;
}

a:hover {
    color: var(--md-primary);
    text-decoration: underline;
}

ul, ol {
    list-style: none;
}

/* ============================================
   LAYOUT UTILITIES
   ============================================ */

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-6);
    width: 100%;
}

.page-container {
    margin-top: calc(var(--header-height) + 100px);
    min-height: calc(100vh - var(--header-height) - 100px);
    padding: var(--spacing-8) var(--spacing-6);
    background-color: var(--md-background);
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */

header {
    display: flex;
    flex-direction: column;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    overflow: visible;
    height: auto;
}

.logo-top-section {
    background: linear-gradient(135deg, #003d82 0%, #1e3a8a 100%);
    padding: var(--spacing-6) 0;
    display: flex;
    justify-content: center;
    align-items: center;
    border-bottom: 3px solid var(--md-tertiary-light);
}

.logo-top {
    height: 60px;
    width: auto;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.header-content {
    background: linear-gradient(135deg, #003d82 0%, #1e3a8a 100%);
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 100%;
    padding: 0 var(--spacing-6);
    height: var(--header-height);
    position: relative;
    z-index: 2;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(0, 61, 130, 0.3), inset 0 1px 2px rgba(255, 255, 255, 0.2);
}

header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.15) 0%, rgba(255, 255, 255, 0) 50%);
    pointer-events: none;
}

header.hide {
    transform: translateY(-100%);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-6);
    position: relative;
    z-index: 2;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.logo img {
    height: 48px;
    width: auto;
}

.logo-text h1 {
    color: white;
    font-size: 20px;
    margin: 0;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.logo-text sup {
    color: var(--md-tertiary-light);
    font-size: 12px;
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

/* Navigation */
nav ul,
.nav-links {
    display: flex;
    gap: var(--spacing-2);
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
}

nav li {
    height: var(--header-height);
    display: flex;
    align-items: center;
}

nav a {
    color: white;
    font-weight: 500;
    font-size: 14px;
    padding: var(--spacing-3) var(--spacing-4);
    transition: all 0.2s ease;
    border-radius: var(--radius-sm);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
    position: relative;
    display: inline-flex;
    align-items: center;
}

nav a:hover {
    color: var(--md-tertiary-light);
    background-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.2);
}

nav a.active {
    color: var(--md-tertiary-light);
    background-color: rgba(255, 255, 255, 0.2);
    font-weight: 600;
}

/* Hamburger Menu Button - Mobile Navigation */
.hamburger {
    display: none;
    flex-direction: column;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: var(--spacing-3);
    position: relative;
    z-index: 1001;
    width: 40px;
    height: 40px;
    justify-content: space-around;
    align-items: center;
    transition: all 0.3s ease;
}

.hamburger span {
    width: 24px;
    height: 3px;
    background: white;
    border-radius: var(--radius-full);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: center;
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.3);
}

.hamburger:hover span {
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.6);
}

/* Hamburger Active State - X Animation */
.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translateY(10px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translateY(-10px);
}

/* Mobile Navigation Menu */
nav.nav-menu {
    display: flex;
    align-items: center;
    position: relative;
    z-index: 1002;
}

/* HERO SECTION */

.hero {
    position: relative;
    padding-top: calc(var(--header-height) + 100px + var(--spacing-8));
    padding-bottom: var(--spacing-10);
    background: linear-gradient(135deg, #0284c7 0%, #6b21a8 50%, #f59e0b 100%);
    overflow: visible;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.05) 100%);
    pointer-events: none;
}

.hero-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-8);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text h1 {
    font-size: 48px;
    margin-bottom: var(--spacing-6);
    color: white;
    font-weight: 700;
    line-height: 1.3;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    word-break: break-word;
}

.hero-text p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: var(--spacing-8);
    max-width: 100%;
    line-height: 1.7;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
    word-wrap: break-word;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-4);
    flex-wrap: wrap;
}

.hero-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--md-shadow-5), 0 0 40px rgba(0, 0, 0, 0.2);
}

.hero-image img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3) var(--spacing-6);
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
    font-size: 14px;
    min-height: 40px;
    gap: var(--spacing-2);
    position: relative;
    overflow: hidden;
    user-select: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1), inset 0 1px 2px rgba(255, 255, 255, 0.3);
}

/* Filled Button (Primary) */
.btn-primary {
    background: linear-gradient(135deg, #0284c7 0%, #00d4ff 100%);
    color: white;
    box-shadow: 0 4px 16px rgba(2, 132, 199, 0.3), inset 0 1px 2px rgba(255, 255, 255, 0.4);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #0369a1 0%, #06b6d4 100%);
    box-shadow: 0 8px 32px rgba(2, 132, 199, 0.4), inset 0 1px 3px rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:focus {
    outline: none;
    box-shadow: var(--md-shadow-3), 0 0 0 4px var(--md-state-layer-focus);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: var(--md-shadow-2), inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Outlined Button */
.btn-outline {
    background: linear-gradient(135deg, transparent, rgba(2, 132, 199, 0.05));
    border: 2px solid var(--md-primary);
    color: var(--md-primary);
    box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.5);
}

.btn-outline:hover {
    background: linear-gradient(135deg, rgba(2, 132, 199, 0.08), rgba(2, 132, 199, 0.12));
    border-color: var(--md-primary-light);
    box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.5), 0 0 12px rgba(2, 132, 199, 0.2);
}

.btn-outline:focus {
    outline: none;
    box-shadow: 0 0 0 4px var(--md-state-layer-focus);
}

/* Text Button */
.btn-text {
    background-color: transparent;
    color: var(--md-primary);
    padding: var(--spacing-2) var(--spacing-4);
}

.btn-text:hover {
    background-color: var(--md-state-layer-hover);
}

/* ============================================
   CARDS & CONTAINERS
   ============================================ */

.section {
    padding: var(--spacing-10) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-8);
}

.section-title h2 {
    font-size: 32px;
    margin-bottom: var(--spacing-3);
    background: linear-gradient(135deg, #0284c7 0%, #6b21a8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.section-title p {
    color: var(--md-on-surface-variant);
    font-size: 16px;
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-6);
}

.card {
    background: linear-gradient(135deg, var(--md-surface-container-lowest) 0%, var(--md-surface-container-low) 100%);
    padding: var(--spacing-6);
    border-radius: var(--radius-md);
    box-shadow: 0 4px 20px rgba(2, 132, 199, 0.08), inset 0 1px 2px rgba(255, 255, 255, 0.5);
    transition: all 0.3s cubic-bezier(0.2, 0, 0, 1);
    border: 1px solid var(--md-outline-variant);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0) 100%);
    pointer-events: none;
    border-radius: var(--radius-md);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(2, 132, 199, 0.15), inset 0 1px 3px rgba(255, 255, 255, 0.6);
    border-color: var(--md-primary);
}

.card:active {
    transform: translateY(-3px);
    box-shadow: var(--md-shadow-3), inset 0 1px 2px rgba(255, 255, 255, 0.5);
}

.card-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, #0284c7 0%, #6b21a8 100%);
    color: white;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: var(--spacing-6);
    box-shadow: 0 6px 24px rgba(2, 132, 199, 0.4);
    position: relative;
    z-index: 1;
}

.card h3 {
    font-size: 20px;
    margin-bottom: var(--spacing-3);
    color: var(--md-on-surface);
}

.card p {
    color: var(--md-on-surface-variant);
    font-size: 14px;
    margin-bottom: var(--spacing-4);
    flex-grow: 1;
    line-height: 1.6;
}

.card-link {
    color: var(--md-primary);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    margin-top: auto;
    transition: all 0.2s ease;
}

.card-link:hover {
    gap: var(--spacing-3);
    color: var(--md-primary);
}

/* ============================================
   FORMS & INPUTS
   ============================================ */

.form-group {
    margin-bottom: var(--spacing-6);
}

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--spacing-2);
    color: var(--md-on-surface);
    font-size: 14px;
}

.form-control {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    font-size: 16px;
    border: 2px solid var(--md-outline-variant);
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
    font-family: inherit;
    background-color: var(--md-surface-container);
    color: var(--md-on-surface);
}

.form-control:focus {
    outline: none;
    border-color: var(--md-primary);
    background-color: var(--md-surface-container-lowest);
    box-shadow: 0 0 0 4px var(--md-state-layer-focus);
}

.form-control:hover {
    border-color: var(--md-on-surface-variant);
    background-color: var(--md-surface-container);
}

.form-control::placeholder {
    color: var(--md-on-surface-variant);
    opacity: 0.6;
}

.search-bar-container {
    background: var(--md-surface-container-lowest);
    padding: var(--spacing-6);
    border-radius: var(--radius-md);
    box-shadow: var(--md-shadow-2);
    margin-bottom: var(--spacing-8);
    display: flex;
    gap: var(--spacing-4);
    align-items: flex-end;
    flex-wrap: wrap;
    border: 1px solid var(--md-outline-variant);
}

.search-input-wrapper {
    flex-grow: 1;
    min-width: 200px;
}

/* ============================================
   TABLES
   ============================================ */

.table-container {
    background: var(--md-surface-container-lowest);
    border-radius: var(--radius-md);
    box-shadow: var(--md-shadow-1);
    overflow: hidden;
    overflow-x: auto;
    border: 1px solid var(--md-outline-variant);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    white-space: nowrap;
}

.data-table th,
.data-table td {
    padding: var(--spacing-4) var(--spacing-6);
    text-align: left;
    border-bottom: 1px solid var(--md-outline-variant);
}

.data-table th {
    background-color: var(--md-surface-container-high);
    font-weight: 600;
    color: var(--md-on-surface);
    text-transform: uppercase;
    font-size: 12px;
    letter-spacing: 0.05em;
    cursor: pointer;
    user-select: none;
    position: relative;
    transition: background-color 0.2s;
}

.data-table th:hover {
    background-color: var(--md-surface-container-highest);
}

.data-table th.sortable {
    position: relative;
}

.data-table th.sortable::after {
    content: ' ⇅';
    font-size: 11px;
    color: var(--md-on-surface-variant);
    margin-left: var(--spacing-2);
}

.data-table th.sort-asc::after {
    content: ' ↑';
    color: var(--md-primary);
}

.data-table th.sort-desc::after {
    content: ' ↓';
    color: var(--md-primary);
}

.data-table tbody tr {
    transition: all 0.2s ease;
}

.data-table tbody tr:nth-child(even) {
    background-color: var(--md-surface-container-lowest);
}

.data-table tbody tr:nth-child(odd) {
    background-color: var(--md-surface-container-low);
}

.data-table tr:last-child td {
    border-bottom: none;
}

.data-table tbody tr:hover {
    background-color: var(--md-surface-container);
    box-shadow: inset 0 0 0 1px var(--md-outline-variant);
}

/* Status Badges */
.status-badge {
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
    display: inline-block;
}

.status-up {
    background-color: var(--md-success-container);
    color: var(--md-success);
}

.status-down {
    background-color: var(--md-error-container);
    color: var(--md-error);
}

/* ============================================
   PAGINATION
   ============================================ */

.pagination {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2);
    margin-top: var(--spacing-8);
    flex-wrap: wrap;
}

.page-btn {
    min-width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--md-outline);
    border-radius: var(--radius-sm);
    background: var(--md-surface-container-lowest);
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 500;
    color: var(--md-primary);
    font-size: 14px;
}

.page-btn:hover:not(:disabled) {
    background: var(--md-state-layer-hover);
    border-color: var(--md-primary);
    color: var(--md-primary);
}

.page-btn.active {
    background: var(--md-primary);
    color: var(--md-on-primary);
    border-color: var(--md-primary);
    font-weight: 700;
}

.page-btn:disabled {
    opacity: 0.38;
    cursor: not-allowed;
    background-color: var(--md-surface-container-lowest);
}

/* ============================================
   CHARTS
   ============================================ */

.chart-container-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-8);
}

.chart-box {
    background: var(--md-surface-container-lowest);
    padding: var(--spacing-6);
    border-radius: var(--radius-md);
    box-shadow: var(--md-shadow-1);
    border: 1px solid var(--md-outline-variant);
    transition: all 0.2s ease;
}

.chart-box:hover {
    box-shadow: var(--md-shadow-2);
    border-color: var(--md-outline);
}

.chart-box h3 {
    margin-bottom: var(--spacing-4);
    color: var(--md-on-surface);
    font-size: 18px;
    font-weight: 600;
}

.chart-box canvas {
    max-height: 300px;
    width: 100%;
}

.chart-box-large {
    background: var(--md-surface-container-lowest);
    padding: var(--spacing-6);
    border-radius: var(--radius-md);
    box-shadow: var(--md-shadow-1);
    border: 1px solid var(--md-outline-variant);
    grid-column: span 2;
    transition: all 0.2s ease;
}

.chart-box-large:hover {
    box-shadow: var(--md-shadow-2);
    border-color: var(--md-outline);
}

.chart-box-large h3 {
    margin-bottom: var(--spacing-4);
    color: var(--md-on-surface);
    font-size: 18px;
    font-weight: 600;
}

.chart-box-large canvas {
    max-height: 400px;
    width: 100%;
}

/* ============================================
   FOOTER
   ============================================ */

footer {
    background: linear-gradient(135deg, #1a1f35 0%, #2d1b4e 50%, #5a189a 100%);
    color: white;
    padding: var(--spacing-10) 0 var(--spacing-6);
    margin-top: auto;
    position: relative;
    overflow: hidden;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0) 50%);
    pointer-events: none;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-8);
    position: relative;
    z-index: 1;
}

.footer-col h3 {
    color: white;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: var(--spacing-4);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.footer-col ul li {
    margin-bottom: var(--spacing-3);
    font-size: 14px;
}

.footer-col a {
    color: rgba(255, 255, 255, 0.85);
    transition: all 0.2s ease;
}

.footer-col a:hover {
    color: var(--md-tertiary-light);
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.3);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    padding-top: var(--spacing-6);
    text-align: center;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.8);
    position: relative;
    z-index: 1;
}

/* ============================================
   RESPONSIVE DESIGN - MOBILE FIRST
   ============================================ */

/* Extra Small (320px - 480px) */
@media (max-width: 480px) {
    :root {
        --spacing-6: 16px;
        --spacing-8: 20px;
        --header-height: 56px;
    }

    .logo-top-section {
        padding: var(--spacing-4) 0;
    }

    .logo-top {
        height: 40px;
    }

    .header-content {
        padding: 0 var(--spacing-4);
        height: var(--header-height);
    }

    /* Show Hamburger Menu on Mobile */
    .hamburger {
        display: flex !important;
    }

    /* Hide regular nav and show mobile nav */
    nav ul,
    .nav-links {
        position: fixed;
        top: calc(var(--header-height) + 80px);
        left: 0;
        right: 0;
        width: 100%;
        background: linear-gradient(135deg, var(--md-primary-dark) 0%, var(--md-secondary-dark) 100%);
        flex-direction: column;
        gap: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease, padding 0.3s ease;
        list-style: none;
        margin: 0;
        padding: 0;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        z-index: 999;
    }

    nav.nav-menu.active ul,
    nav.nav-menu.active .nav-links {
        max-height: 500px;
        padding: var(--spacing-4) 0;
    }

    nav li {
        height: auto;
        width: 100%;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    nav li:last-child {
        border-bottom: none;
    }

    nav a {
        padding: var(--spacing-4) var(--spacing-6);
        font-size: 14px;
        width: 100%;
        display: block;
        border-radius: 0;
    }

    nav a:hover {
        background-color: rgba(255, 255, 255, 0.2);
    }

    .hero {
        padding-top: calc(var(--header-height) + 80px + var(--spacing-6));
    }

    .hero-wrapper {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-6);
    }

    .hero-text h1 {
        font-size: 28px;
    }

    .hero-text p {
        font-size: 14px;
    }

    .hero-buttons {
        justify-content: center;
        gap: var(--spacing-3);
    }

    .btn {
        padding: var(--spacing-3) var(--spacing-4);
        font-size: 13px;
        min-height: 36px;
    }

    .page-container {
        margin-top: calc(var(--header-height) + 80px);
        padding: var(--spacing-4);
    }

    .container {
        padding: 0 var(--spacing-4);
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-4);
    }

    .chart-container-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-4);
    }

    .chart-box-large {
        grid-column: span 1;
    }

    .data-table th,
    .data-table td {
        padding: var(--spacing-3);
        font-size: 13px;
    }

    .footer-grid {
        gap: var(--spacing-6);
    }
}

/* Small (480px - 768px) */
@media (min-width: 480px) and (max-width: 768px) {
    :root {
        --spacing-6: 20px;
        --spacing-8: 24px;
    }

    .logo-top {
        height: 50px;
    }

    /* Show Hamburger Menu on Small Tablets */
    .hamburger {
        display: flex !important;
    }

    /* Hide regular nav and show mobile nav */
    nav ul,
    .nav-links {
        position: fixed;
        top: calc(var(--header-height) + 80px);
        left: 0;
        right: 0;
        width: 100%;
        background: linear-gradient(135deg, var(--md-primary-dark) 0%, var(--md-secondary-dark) 100%);
        flex-direction: column;
        gap: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease, padding 0.3s ease;
        list-style: none;
        margin: 0;
        padding: 0;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        z-index: 999;
    }

    nav.nav-menu.active ul,
    nav.nav-menu.active .nav-links {
        max-height: 500px;
        padding: var(--spacing-4) 0;
    }

    nav li {
        height: auto;
        width: 100%;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    nav li:last-child {
        border-bottom: none;
    }

    nav a {
        padding: var(--spacing-4) var(--spacing-6);
        font-size: 14px;
        width: 100%;
        display: block;
        border-radius: 0;
    }

    nav a:hover {
        background-color: rgba(255, 255, 255, 0.2);
    }

    .header-content {
        padding: 0 var(--spacing-4);
    }

    .logo-text h1 {
        font-size: 18px;
    }

    .logo-text sup {
        font-size: 11px;
    }

    .hero-wrapper {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text h1 {
        font-size: 36px;
    }

    .chart-container-grid {
        grid-template-columns: 1fr;
    }

    .chart-box-large {
        grid-column: span 1;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Medium (768px - 1024px) */
@media (min-width: 768px) and (max-width: 1024px) {
    .chart-container-grid {
        grid-template-columns: 1fr;
    }

    .chart-box-large {
        grid-column: span 1;
    }
}

/* Tablet and Above (769px+) - Restore Desktop Navigation */
@media (min-width: 769px) {
    .hamburger {
        display: none !important;
    }

    nav ul,
    .nav-links {
        position: static !important;
        display: flex !important;
        flex-direction: row !important;
        max-height: none !important;
        padding: 0 !important;
        background: transparent !important;
        box-shadow: none !important;
        gap: var(--spacing-2) !important;
        width: auto !important;
        overflow: visible !important;
    }

    nav li {
        height: var(--header-height) !important;
        width: auto !important;
        border-bottom: none !important;
    }

    nav a {
        padding: var(--spacing-3) var(--spacing-4) !important;
        font-size: 14px !important;
        width: auto !important;
        display: inline-flex !important;
        border-radius: var(--radius-sm) !important;
    }
}

/* Large (1024px+) - Default */
@media (min-width: 1024px) {
    .chart-container-grid {
        grid-template-columns: 2fr 1fr;
    }

    .chart-box-large {
        grid-column: span 1;
    }
}

/* Tablet Landscape & Desktop (1200px+) */
@media (min-width: 1200px) {
    .chart-container-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .chart-box-large {
        grid-column: span 2;
    }
}

/* ============================================
   ACCESSIBILITY & STATES
   ============================================ */

/* Focus visible for keyboard navigation */
*:focus-visible {
    outline: 2px solid var(--md-primary);
    outline-offset: 2px;
}

/* Reduced motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Dark mode support (future enhancement) */
@media (prefers-color-scheme: dark) {
    /* Dark mode colors can be added here */
}

/* Print styles */
@media print {
    header, footer, .pagination, .search-bar-container {
        display: none;
    }

    .page-container {
        margin-top: 0;
        padding: 0;
    }

    .card, .data-table {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}

/* =============================================
   FIGURES GALLERY PAGE
   ============================================= */

/* Study group tabs */
.fig-study-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.fig-study-tab {
    padding: 0.7rem 1.5rem;
    border: 2px solid var(--md-primary);
    background: transparent;
    color: var(--md-primary);
    border-radius: 99px;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.25s ease;
}

.fig-study-tab:hover {
    background: var(--md-primary-light);
    color: white;
}

.fig-study-tab.active {
    background: var(--md-primary);
    color: white;
    box-shadow: var(--md-shadow-2);
}

/* Dataset selector pills */
.fig-dataset-selector {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.fig-dataset-btn {
    padding: 0.5rem 1.1rem;
    border: 1.5px solid var(--md-outline);
    background: var(--md-surface);
    color: var(--md-on-surface);
    border-radius: 99px;
    font-family: 'Montserrat', sans-serif;
    font-weight: 500;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.fig-dataset-btn:hover {
    border-color: var(--md-primary);
    color: var(--md-primary);
    background: var(--md-primary-container);
}

.fig-dataset-btn.active {
    background: var(--md-primary);
    color: white;
    border-color: var(--md-primary);
    box-shadow: 0 2px 8px rgba(2, 132, 199, 0.25);
}

/* Dataset title */
.fig-dataset-title {
    font-size: 1.3rem;
    color: var(--md-primary-dark);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--md-primary-container);
}

.fig-dataset-title i {
    margin-right: 0.5rem;
    color: var(--md-primary);
}

/* Category sections */
.fig-category-section {
    margin-bottom: 2rem;
}

.fig-category-heading {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--md-on-surface-variant);
    margin-bottom: 1rem;
    padding: 0.5rem 0.8rem;
    background: var(--md-surface-container-low);
    border-radius: 8px;
    display: inline-block;
}

.fig-category-heading i {
    margin-right: 0.4rem;
    color: var(--md-secondary);
}

/* Figure grid */
.fig-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1rem;
}

/* Figure card */
.fig-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--md-shadow-1);
    cursor: pointer;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    border: 1px solid var(--md-outline-variant);
}

.fig-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--md-shadow-4);
}

.fig-card-img-wrap {
    position: relative;
    width: 100%;
    background: #f8fafc;
    overflow: hidden;
}

.fig-card-img-wrap img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.3s ease;
}

.fig-card:hover .fig-card-img-wrap img {
    transform: scale(1.03);
}

.fig-card-zoom {
    position: absolute;
    top: 0.6rem;
    right: 0.6rem;
    background: rgba(0, 0, 0, 0.55);
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    opacity: 0;
    transition: opacity 0.25s ease;
}

.fig-card:hover .fig-card-zoom {
    opacity: 1;
}

.fig-card-caption {
    padding: 0.7rem 1rem;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--md-on-surface);
    text-align: center;
    border-top: 1px solid var(--md-outline-variant);
    background: var(--md-surface);
}

/* Lightbox overlay */
.fig-lightbox-overlay {
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: rgba(0, 0, 0, 0.88);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.fig-lightbox-overlay.active {
    opacity: 1;
    visibility: visible;
}

.fig-lightbox-content {
    position: relative;
    max-width: 92vw;
    max-height: 92vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.fig-lightbox-img {
    max-width: 90vw;
    max-height: 82vh;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
}

.fig-lightbox-caption {
    color: #e2e8f0;
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    margin-top: 1rem;
    padding: 0 1rem;
    font-family: 'Montserrat', sans-serif;
}

.fig-lightbox-close {
    position: absolute;
    top: -2.5rem;
    right: -0.5rem;
    background: none;
    border: none;
    color: white;
    font-size: 2.2rem;
    cursor: pointer;
    line-height: 1;
    padding: 0.2rem 0.5rem;
    transition: color 0.2s ease;
    z-index: 10001;
}

.fig-lightbox-close:hover {
    color: var(--md-tertiary-light);
}

/* Figures page responsive */
@media (max-width: 768px) {
    .fig-grid {
        grid-template-columns: 1fr;
    }

    .fig-study-tabs {
        flex-direction: column;
    }

    .fig-study-tab {
        text-align: center;
    }

    .fig-dataset-selector {
        gap: 0.4rem;
    }

    .fig-dataset-btn {
        font-size: 0.78rem;
        padding: 0.4rem 0.8rem;
    }

    .fig-lightbox-img {
        max-width: 96vw;
        max-height: 75vh;
    }

    .fig-lightbox-close {
        top: -2rem;
        right: 0;
        font-size: 1.8rem;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .fig-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}