/**
 * PulseTrack - Data Visualization Landing Page
 * Modern analytics and data storytelling design
 */

/* ===== CSS VARIABLES ===== */
:root {
    /* Colors */
    --primary: #3b82f6;
    --primary-light: #60a5fa;
    --primary-dark: #2563eb;
    --secondary: #8b5cf6;
    --accent: #10b981;
    --accent-warning: #f59e0b;
    --accent-danger: #ef4444;
    
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: #1e293b;
    --bg-white: #ffffff;
    
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --text-inverse: #0f172a;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    --gradient-accent: linear-gradient(135deg, #10b981 0%, #3b82f6 100%);
    --gradient-chart: linear-gradient(180deg, rgba(59, 130, 246, 0.2) 0%, transparent 100%);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'Fira Code', 'Courier New', monospace;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 30px rgba(59, 130, 246, 0.4);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== RESET & BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-primary);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

canvas {
    max-width: 100%;
}

/* ===== CONTAINER ===== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* ===== GRADIENT TEXT ===== */
.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    transition: var(--transition-smooth);
    padding: var(--space-lg) 0;
}

.navbar.scrolled {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(59, 130, 246, 0.2);
    box-shadow: var(--shadow-md);
    padding: var(--space-md) 0;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.nav-brand i {
    color: var(--primary);
    font-size: 1.75rem;
}

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

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition-smooth);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-smooth);
}

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

.nav-link:hover::after {
    width: 100%;
}

.btn-nav {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--gradient-primary);
    color: var(--text-primary);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-full);
    font-weight: 600;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-glow);
}

.btn-nav:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 40px rgba(59, 130, 246, 0.6);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 30px;
    height: 24px;
}

.nav-toggle span {
    width: 100%;
    height: 3px;
    background: var(--text-primary);
    border-radius: var(--radius-full);
    transition: var(--transition-smooth);
}

/* ===== HERO SECTION ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding: var(--space-4xl) 0;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
    background: radial-gradient(circle at 50% 50%, rgba(59, 130, 246, 0.1) 0%, transparent 50%);
}

.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.5;
}

.data-particles {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: var(--primary-light);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--space-lg);
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
    letter-spacing: -0.02em;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-2xl);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
    padding: var(--space-xl);
    background: rgba(30, 41, 59, 0.5);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: var(--radius-xl);
}

.stat-item {
    text-align: center;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-light);
    font-family: var(--font-mono);
    line-height: 1;
    display: inline-block;
}

.stat-suffix {
    font-size: 1.5rem;
    color: var(--primary-light);
}

.stat-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-tertiary);
    margin-top: var(--space-sm);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.hero-visualization {
    position: relative;
}

.hero-visualization canvas {
    width: 100%;
    height: 350px;
}

.btn-large {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-2xl);
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: var(--transition-smooth);
}

.btn-large.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-primary);
    box-shadow: var(--shadow-glow);
}

.btn-large.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 50px rgba(59, 130, 246, 0.6);
}

.btn-large.btn-secondary {
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary-light);
    border: 2px solid rgba(59, 130, 246, 0.3);
}

.btn-large.btn-secondary:hover {
    background: rgba(59, 130, 246, 0.2);
    border-color: var(--primary);
}

.btn-large.btn-glass {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 2px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.btn-large.btn-glass:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-3px);
}

/* ===== CHART CONTAINERS ===== */
.chart-container,
.chart-card {
    background: var(--bg-card);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    box-shadow: var(--shadow-lg);
}

.chart-container canvas,
.chart-card canvas {
    width: 100%;
    height: 300px;
    display: block;
}

.chart-card.small canvas {
    height: 200px;
}

.chart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-xl);
}

.chart-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.chart-header p {
    font-size: 0.9rem;
    color: var(--text-tertiary);
    margin-top: var(--space-xs);
}

.chart-controls {
    display: flex;
    gap: var(--space-sm);
}

.chart-btn {
    padding: var(--space-xs) var(--space-md);
    background: rgba(59, 130, 246, 0.1);
    color: var(--text-secondary);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 600;
    transition: var(--transition-fast);
}

.chart-btn:hover {
    background: rgba(59, 130, 246, 0.2);
    color: var(--primary-light);
}

.chart-btn.active {
    background: var(--primary);
    color: var(--text-primary);
    border-color: var(--primary);
}

.chart-legend {
    display: flex;
    gap: var(--space-lg);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

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

.legend-item .dot.primary {
    background: var(--primary);
}

.legend-item .dot.secondary {
    background: var(--secondary);
}

/* ===== SECTION STYLES ===== */
section {
    padding: var(--space-4xl) 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-4xl);
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: var(--primary-light);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--space-lg);
}

.section-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
}

.section-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* ===== METRICS SECTION ===== */
.metrics {
    background: var(--bg-secondary);
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
}

.metric-card {
    background: var(--bg-card);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.metric-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: var(--shadow-xl);
}

.metric-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    font-size: 1.75rem;
    margin-bottom: var(--space-lg);
}

.metric-icon.sleep {
    background: rgba(139, 92, 246, 0.1);
    color: var(--secondary);
}

.metric-icon.exercise {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent);
}

.metric-icon.nutrition {
    background: rgba(245, 158, 11, 0.1);
    color: var(--accent-warning);
}

.metric-icon.stress {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-danger);
}

.metric-title {
    font-size: 0.9rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-sm);
}

.metric-value {
    display: flex;
    align-items: baseline;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
}

.metric-value .value {
    font-size: 3rem;
    font-weight: 800;
    color: var(--text-primary);
    font-family: var(--font-mono);
    line-height: 1;
}

.metric-value .unit {
    font-size: 1rem;
    color: var(--text-tertiary);
}

.metric-change {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.9rem;
    font-weight: 600;
}

.metric-change.positive {
    color: var(--accent);
}

.metric-change.negative {
    color: var(--accent-danger);
}

.mini-chart {
    height: 60px;
    margin-top: var(--space-lg);
    background: rgba(59, 130, 246, 0.05);
    border-radius: var(--radius-md);
    position: relative;
}

.mini-chart canvas {
    width: 100%;
    height: 100%;
    display: block;
}

/* ===== DATA VIZ SECTION ===== */
.data-viz {
    background: var(--bg-primary);
}

.viz-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-xl);
}

.chart-card.small {
    margin-bottom: var(--space-xl);
}

.goals-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.goal-item {
    display: grid;
    grid-template-columns: 1fr 2fr auto;
    gap: var(--space-md);
    align-items: center;
}

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

.goal-bar {
    height: 8px;
    background: rgba(59, 130, 246, 0.1);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.goal-progress {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width 1s ease-out;
}

.goal-percent {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--primary-light);
    font-weight: 600;
}

/* ===== TRENDS SECTION ===== */
.trends {
    background: var(--bg-secondary);
}

.trends-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--space-xl);
}

.trend-card {
    background: var(--bg-card);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
}

.trend-card.large {
    grid-column: 1 / -1;
}

.trend-card.large canvas {
    height: 400px;
}

.diet-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.diet-stat {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.diet-color {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.diet-color.balanced {
    background: var(--primary);
}

.diet-color.vegetarian {
    background: var(--accent);
}

.diet-color.keto {
    background: var(--accent-warning);
}

.diet-color.vegan {
    background: var(--secondary);
}

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

.diet-value {
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--primary-light);
}

.trend-insight {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    margin-top: var(--space-lg);
    padding: var(--space-md);
    background: rgba(16, 185, 129, 0.1);
    border-left: 3px solid var(--accent);
    border-radius: var(--radius-md);
}

.trend-insight i {
    color: var(--accent);
    font-size: 1.25rem;
    margin-top: var(--space-xs);
}

.trend-insight p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== GLOBAL MAP SECTION ===== */
.global-map {
    background: var(--bg-primary);
}

.map-container {
    margin-bottom: var(--space-3xl);
}

.map-controls {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    margin-bottom: var(--space-2xl);
    flex-wrap: wrap;
}

.map-btn {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: rgba(59, 130, 246, 0.1);
    color: var(--text-secondary);
    border: 2px solid transparent;
    border-radius: var(--radius-full);
    font-weight: 600;
    transition: var(--transition-smooth);
}

.map-btn:hover {
    background: rgba(59, 130, 246, 0.2);
    color: var(--primary-light);
}

.map-btn.active {
    background: var(--primary);
    color: var(--text-primary);
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.map-visualization {
    position: relative;
    height: 500px;
    background: var(--bg-card);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.map-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
    padding: var(--space-2xl);
}

.map-placeholder i {
    font-size: 5rem;
    color: var(--primary);
    margin-bottom: var(--space-lg);
    opacity: 0.3;
}

.map-placeholder h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.map-placeholder p {
    color: var(--text-tertiary);
}

.map-data-points {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.data-point {
    position: absolute;
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.data-point .pulse {
    width: 100%;
    height: 100%;
    background: var(--primary);
    border-radius: 50%;
    animation: pulse 2s ease-out infinite;
}

@keyframes pulse {
    0% {
        transform: scale(0.8);
        opacity: 1;
    }
    100% {
        transform: scale(2);
        opacity: 0;
    }
}

.point-tooltip {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-card);
    border: 1px solid var(--primary);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-smooth);
    box-shadow: var(--shadow-lg);
}

.data-point:hover .point-tooltip {
    opacity: 1;
}

.point-tooltip h4 {
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
    font-size: 0.9rem;
}

.point-tooltip p {
    color: var(--text-secondary);
    font-size: 0.8rem;
    line-height: 1.4;
}

.map-legend {
    margin-top: var(--space-lg);
    text-align: center;
}

.legend-title {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--space-sm);
}

.legend-scale {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
}

.scale-label {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

.scale-gradient {
    width: 200px;
    height: 12px;
    background: linear-gradient(90deg, var(--accent-danger), var(--accent-warning), var(--accent));
    border-radius: var(--radius-full);
}

.regional-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
}

.region-card {
    background: var(--bg-card);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    text-align: center;
}

.region-card h4 {
    color: var(--text-tertiary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-md);
}

.region-flag {
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

.region-name {
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.region-score {
    font-family: var(--font-mono);
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-light);
}

/* ===== CTA SECTION ===== */
.cta {
    position: relative;
    padding: var(--space-4xl) 0;
    overflow: hidden;
}

.cta-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
    z-index: 1;
}

.data-stream {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.cta .container {
    position: relative;
    z-index: 2;
}

.cta-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.cta-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
}

.cta-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-2xl);
    line-height: 1.8;
}

.cta-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    margin-bottom: var(--space-xl);
    flex-wrap: wrap;
}

.cta-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    color: var(--text-tertiary);
    font-size: 0.9rem;
}

.cta-note i {
    color: var(--accent);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid rgba(59, 130, 246, 0.2);
    padding: var(--space-4xl) 0 var(--space-xl) 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: var(--space-4xl);
    margin-bottom: var(--space-3xl);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.footer-logo i {
    color: var(--primary);
    font-size: 1.75rem;
}

.footer-tagline {
    color: var(--text-secondary);
    line-height: 1.6;
}

.footer-social {
    display: flex;
    gap: var(--space-md);
}

.social-link {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: var(--radius-md);
    color: var(--primary-light);
    font-size: 1.25rem;
    transition: var(--transition-smooth);
}

.social-link:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--text-primary);
    transform: translateY(-3px);
}

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

.footer-column {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.footer-heading {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

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

.footer-link:hover {
    color: var(--primary-light);
    padding-left: 5px;
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-xl);
    border-top: 1px solid rgba(59, 130, 246, 0.2);
}

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

.footer-badges {
    display: flex;
    gap: var(--space-lg);
}

.footer-badges .badge {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--text-tertiary);
    font-size: 0.85rem;
}

.footer-badges .badge i {
    color: var(--accent);
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

[data-animate] {
    opacity: 0;
}

[data-animate].animated {
    animation-duration: 0.8s;
    animation-fill-mode: both;
}

[data-animate="fade-up"].animated {
    animation-name: fadeInUp;
}

[data-animate="zoom-in"].animated {
    animation-name: zoomIn;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

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

    .viz-layout {
        grid-template-columns: 1fr;
    }

    .trends-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 768px) {
    .nav-menu,
    .nav-actions {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-stats {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .hero-cta {
        flex-direction: column;
        width: 100%;
    }

    .btn-large {
        width: 100%;
        justify-content: center;
    }

    .metrics-grid {
        grid-template-columns: 1fr;
    }

    .map-controls {
        gap: var(--space-sm);
    }

    .map-btn {
        padding: var(--space-sm) var(--space-md);
        font-size: 0.85rem;
    }

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

    .footer-links {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-lg);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .chart-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-md);
    }

    .goal-item {
        grid-template-columns: 1fr;
        gap: var(--space-xs);
    }

    .diet-stats {
        grid-template-columns: 1fr;
    }

    .regional-stats {
        grid-template-columns: 1fr;
    }
}