/* HeadEase Website Styles */
/* Calming, serene design for headache relief */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Fraunces:wght@400;500;600;700&display=swap');

:root {
    /* HeadEase Calm Waters Palette */
    --primary: #5B9BD5;
    --primary-light: #7FBFEA;
    --primary-dark: #4A87C0;
    --secondary: #7FBFA3;
    --accent: #A8D4E6;

    /* Backgrounds */
    --bg-primary: #F7FAFC;
    --bg-secondary: #EDF4F8;
    --bg-dark: #0F1417;
    --bg-card: #FFFFFF;

    /* Text */
    --text-primary: #1A2B3C;
    --text-secondary: #4A5D6E;
    --text-muted: #7A8B9C;
    --text-light: #E6ECEF;

    /* Status Colors */
    --success: #7FBFA3;
    --warning: #E5A853;
    --error: #D97373;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-xxl: 48px;
    --space-3xl: 64px;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(91, 155, 213, 0.08);
    --shadow-md: 0 4px 16px rgba(91, 155, 213, 0.12);
    --shadow-lg: 0 8px 32px rgba(91, 155, 213, 0.16);
    --shadow-xl: 0 16px 48px rgba(91, 155, 213, 0.2);

    /* Typography */
    --font-display: 'Fraunces', serif;
    --font-body: 'DM Sans', sans-serif;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #0F1417;
        --bg-secondary: #1A2129;
        --bg-card: #1E2730;
        --text-primary: #E6ECEF;
        --text-secondary: #A8B5C2;
        --text-muted: #6B7A8A;
    }
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Ambient Background Effects */
.ambient-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

.ambient-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: ambientFloat 20s ease-in-out infinite;
}

.ambient-glow-1 {
    width: 600px;
    height: 600px;
    background: linear-gradient(135deg, var(--primary-light), var(--accent));
    top: -200px;
    right: -200px;
    animation-delay: 0s;
}

.ambient-glow-2 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, var(--secondary), var(--primary-light));
    bottom: -150px;
    left: -150px;
    animation-delay: -7s;
}

.ambient-glow-3 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--accent), var(--primary));
    top: 40%;
    left: 30%;
    animation-delay: -14s;
}

@keyframes ambientFloat {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    25% {
        transform: translate(30px, -30px) scale(1.05);
    }
    50% {
        transform: translate(-20px, 20px) scale(0.95);
    }
    75% {
        transform: translate(-30px, -20px) scale(1.02);
    }
}

/* Grain Texture Overlay */
.grain {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: var(--space-md) var(--space-xl);
    background: rgba(247, 250, 252, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(91, 155, 213, 0.1);
    transition: all 0.3s ease;
}

@media (prefers-color-scheme: dark) {
    .navbar {
        background: rgba(15, 20, 23, 0.85);
        border-bottom: 1px solid rgba(91, 155, 213, 0.15);
    }
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.nav-logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

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

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

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

.nav-cta {
    background: var(--primary);
    color: white;
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-full);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
}

.nav-cta:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        padding: var(--space-lg);
        gap: var(--space-md);
        border-bottom: 1px solid rgba(91, 155, 213, 0.1);
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-menu-btn {
        display: flex;
    }
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px var(--space-xl) var(--space-3xl);
    position: relative;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.hero-content {
    animation: fadeInUp 0.8s ease-out;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: rgba(91, 155, 213, 0.1);
    color: var(--primary);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: var(--space-lg);
    border: 1px solid rgba(91, 155, 213, 0.2);
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
}

.hero-title-accent {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    max-width: 500px;
}

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

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--primary);
    color: white;
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: transparent;
    color: var(--text-primary);
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    border: 2px solid rgba(91, 155, 213, 0.3);
}

.btn-secondary:hover {
    border-color: var(--primary);
    background: rgba(91, 155, 213, 0.05);
}

/* Hero Visual */
.hero-visual {
    position: relative;
    perspective: 1000px;
}

.hero-cards {
    position: relative;
    height: 500px;
}

.floating-card {
    position: absolute;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-lg);
    transition: transform 0.3s ease;
    border: 1px solid rgba(91, 155, 213, 0.1);
}

.floating-card-1 {
    top: 0;
    left: 20%;
    width: 280px;
    animation: cardFloat 6s ease-in-out infinite;
}

.floating-card-2 {
    top: 40%;
    right: 10%;
    width: 240px;
    animation: cardFloat 6s ease-in-out infinite;
    animation-delay: -2s;
}

.floating-card-3 {
    bottom: 5%;
    left: 10%;
    width: 260px;
    animation: cardFloat 6s ease-in-out infinite;
    animation-delay: -4s;
}

@keyframes cardFloat {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-15px) rotate(1deg);
    }
}

.card-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.card-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.card-icon.success {
    background: linear-gradient(135deg, var(--success), #9DD4B7);
}

.card-icon.warning {
    background: linear-gradient(135deg, var(--warning), #F0C17A);
}

.card-title {
    font-weight: 600;
    color: var(--text-primary);
}

.card-subtitle {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.card-content {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.pain-indicator {
    display: flex;
    gap: var(--space-xs);
    margin-top: var(--space-sm);
}

.pain-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--bg-secondary);
}

.pain-dot.active {
    background: var(--warning);
}

.pain-dot.active.severe {
    background: var(--error);
}

/* Features Section */
.features {
    padding: var(--space-3xl) var(--space-xl);
    background: var(--bg-secondary);
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: rgba(91, 155, 213, 0.1);
    color: var(--primary);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.section-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.feature-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all 0.3s ease;
    border: 1px solid rgba(91, 155, 213, 0.1);
    opacity: 0;
    transform: translateY(30px);
}

.feature-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: var(--space-lg);
}

.feature-title {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.7;
}

@media (max-width: 992px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

/* Stats Section */
.stats {
    padding: var(--space-3xl) var(--space-xl);
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
}

.stats-container {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.stats-title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 700;
    color: white;
    margin-bottom: var(--space-3xl);
}

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

.stat-item {
    opacity: 0;
    transform: translateY(20px);
}

.stat-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.stat-number {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
    color: white;
    line-height: 1;
    margin-bottom: var(--space-sm);
}

.stat-label {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1rem;
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-xl);
    }
}

/* CTA Section */
.cta {
    padding: var(--space-3xl) var(--space-xl);
    text-align: center;
}

.cta-container {
    max-width: 800px;
    margin: 0 auto;
}

.cta-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.cta-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.app-store-badge {
    height: 52px;
    transition: transform 0.3s ease;
}

.app-store-badge:hover {
    transform: scale(1.05);
}

/* Footer */
.footer {
    background: var(--bg-dark);
    color: var(--text-light);
    padding: var(--space-3xl) var(--space-xl) var(--space-xl);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-3xl);
    flex-wrap: wrap;
    gap: var(--space-xl);
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: white;
    margin-bottom: var(--space-md);
}

.footer-logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.footer-tagline {
    color: var(--text-muted);
    line-height: 1.7;
}

.footer-links {
    display: flex;
    gap: var(--space-3xl);
}

.footer-column h4 {
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: white;
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: var(--space-sm);
}

.footer-column a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-column a:hover {
    color: var(--primary-light);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

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

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

.footer-legal a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

.footer-legal a:hover {
    color: var(--primary-light);
}

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

/* Responsive */
@media (max-width: 768px) {
    .hero {
        padding: 100px var(--space-md) var(--space-xxl);
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--space-xxl);
        text-align: center;
    }

    .hero-description {
        margin: 0 auto var(--space-xl);
    }

    .hero-cta-group {
        justify-content: center;
    }

    .hero-visual {
        display: none;
    }

    .features,
    .stats,
    .cta {
        padding: var(--space-xxl) var(--space-md);
    }

    .footer-top {
        flex-direction: column;
        text-align: center;
    }

    .footer-brand {
        max-width: 100%;
    }

    .footer-links {
        flex-direction: column;
        gap: var(--space-xl);
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* Legal Pages */
.legal-page {
    padding: 120px var(--space-xl) var(--space-3xl);
    min-height: 100vh;
}

.legal-container {
    max-width: 800px;
    margin: 0 auto;
}

.legal-header {
    margin-bottom: var(--space-3xl);
}

.legal-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.legal-updated {
    color: var(--text-muted);
}

.legal-content h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: var(--space-xl);
    margin-bottom: var(--space-md);
}

.legal-content p {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.8;
}

.legal-content ul {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    padding-left: var(--space-xl);
}

.legal-content li {
    margin-bottom: var(--space-sm);
    line-height: 1.7;
}

.legal-content a {
    color: var(--primary);
    text-decoration: none;
}

.legal-content a:hover {
    text-decoration: underline;
}

/* Utility Classes */
.text-gradient {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}