:root {
    /* Colors */
    --clr-bg: #f8fafc;
    --clr-surface: #ffffff;
    --clr-text: #0f172a;
    --clr-text-muted: #64748b;

    /* Brand Accent - Purple */
    --clr-primary: #8b5cf6;
    --clr-primary-light: #a78bfa;
    --clr-primary-dark: #7c3aed;
    --clr-primary-alpha: rgba(139, 92, 246, 0.15);

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

    /* Spacing */
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 2rem;
    --space-xl: 4rem;
    --space-xxl: 6rem;

    /* Shadows & Border Radius*/
    --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);
    --shadow-primary: 0 10px 25px -5px rgba(139, 92, 246, 0.4);

    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;

    /* Transitions */
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

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

.bg-light {
    background-color: var(--clr-surface);
}

img,
picture,
video,
canvas,
svg {
    display: block;
    max-width: 100%;
}

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

a:hover {
    color: var(--clr-primary);
}

/* Layout */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.container-small {
    max-width: 800px;
}

/* Typography */
h1,
h2,
h3,
h4 {
    color: var(--clr-text);
    line-height: 1.2;
    font-weight: 700;
    letter-spacing: -0.02em;
}

p {
    color: var(--clr-text-muted);
}

/* Components */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    background-color: var(--clr-primary);
    color: white;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition);
    border: 2px solid transparent;
    cursor: pointer;
}

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

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-outline {
    background-color: transparent;
    color: var(--clr-primary);
    border-color: var(--clr-primary);
}

.btn-outline:hover {
    background-color: var(--clr-primary-alpha);
    color: var(--clr-primary);
    box-shadow: none;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: var(--clr-primary-alpha);
    color: var(--clr-primary-dark);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 999px;
    margin-bottom: var(--space-md);
}

/* Header & Nav */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: var(--space-md) 0;
    transition: background-color var(--transition), box-shadow var(--transition);
}

.blur-nav {
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--clr-text);
}

.logo-icon {
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, var(--clr-primary-light), var(--clr-primary-dark));
    border-radius: 6px;
    display: inline-block;
}

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

.main-nav a {
    font-weight: 500;
    font-size: 0.95rem;
}

.main-nav a.active {
    color: var(--clr-primary);
}

/* Hero Section */
.hero {
    padding-top: calc(var(--space-xxl) + 60px);
    padding-bottom: var(--space-xxl);
    background: radial-gradient(circle at top right, var(--clr-primary-alpha), transparent 50%),
        radial-gradient(circle at bottom left, rgba(255, 255, 255, 1), var(--clr-bg) 50%);
}

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

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: var(--space-md);
}

.hero-subtitle {
    font-size: 1.125rem;
    margin-bottom: var(--space-lg);
    max-width: 90%;
}

.hero-visual {
    position: relative;
    perspective: 1000px;
}

.app-mockup {
    position: relative;
    z-index: 10;
    border-radius: var(--radius-lg);
    background-color: var(--clr-surface);
    padding: 0.5rem;
    box-shadow: var(--shadow-xl);
    transform: rotateY(-5deg) rotateX(5deg);
    transition: transform var(--transition);
}

.app-mockup:hover {
    transform: rotateY(0deg) rotateX(0deg);
}

.mockup-img {
    border-radius: var(--radius-md);
    border: 1px solid rgba(0, 0, 0, 0.05);
    background-color: #ffffff;
    width: 100%;
    aspect-ratio: 16/13;
    object-fit: cover;
}

.mockup-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    background: radial-gradient(circle, var(--clr-primary-alpha) 0%, transparent 70%);
    z-index: -1;
    pointer-events: none;
}

/* Features Section */
.features {
    padding: var(--space-xxl) 0;
    background-color: var(--clr-surface);
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--space-xl);
}

.section-header h2 {
    font-size: 2.25rem;
    margin-bottom: var(--space-sm);
}

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

.feature-card {
    padding: var(--space-lg);
    background-color: var(--clr-bg);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(0, 0, 0, 0.03);
    transition: transform var(--transition), box-shadow var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
    display: inline-block;
    padding: 1rem;
    background-color: var(--clr-surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

/* CTA Banner */
.cta-banner {
    padding: var(--space-xxl) 0;
    background: linear-gradient(135deg, var(--clr-primary-light), var(--clr-primary-dark));
    color: white;
    text-align: center;
}

.cta-banner h2,
.cta-banner p {
    color: white;
}

.cta-banner h2 {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
}

.cta-banner p {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: var(--space-lg);
}

/* Support Page */
.support-main {
    padding-top: calc(var(--space-xxl) + 60px);
    min-height: 80vh;
}

.support-header {
    text-align: center;
    padding: var(--space-xl) 0;
    background: linear-gradient(to bottom, var(--clr-primary-alpha), transparent);
}

.support-header h1 {
    font-size: 3rem;
}

.empty-state {
    text-align: center;
    padding: var(--space-xxl) var(--space-lg);
    background-color: var(--clr-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px dashed #cbd5e1;
    margin-top: var(--space-lg);
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: var(--space-md);
    opacity: 0.5;
}

/* Footer */
.footer {
    background-color: #0f172a;
    color: #94a3b8;
    padding: var(--space-xl) 0;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-lg);
}

.footer .logo {
    color: white;
    margin-bottom: var(--space-sm);
}

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

.footer-links a:hover {
    color: white;
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.slide-up {
    animation: slideUp 0.8s ease-out forwards;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.delay-1 {
    transition-delay: 0.1s;
}

.delay-2 {
    transition-delay: 0.2s;
}

.delay-3 {
    transition-delay: 0.3s;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .app-mockup {
        transform: none;
        max-width: 500px;
        margin: 0 auto;
    }

    .main-nav {
        display: none;
        /* simple mobile nav for now */
    }

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