:root {
    --bg-color: #000000;
    --surface-1: #151718;
    --surface-2: #202224;
    --text-primary: #ffffff;
    --text-secondary: #9BA1A6;
    --accent: #E74C3C;
    --accent-secondary: #F1C40F;
    --accent-glow: rgba(231, 76, 60, 0.3);
    --border: rgba(255, 255, 255, 0.1);
    --font-main: 'Inter', -apple-system, sans-serif;
}

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

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

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.2rem;
}

.logo img {
    width: 32px;
    height: 32px;
    border-radius: 8px;
}

.nav-cta {
    background: linear-gradient(135deg, #10B981 0%, #059669 100%);
    color: #ffffff;
    padding: 12px 28px;
    border-radius: 100px;
    text-decoration: none;
    font-weight: 700;
    font-size: 0.95rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow:
        0 4px 14px 0 rgba(16, 185, 129, 0.4),
        0 0 0 0 rgba(16, 185, 129, 0.6);
    position: relative;
    overflow: hidden;
    letter-spacing: 0.3px;
}

.nav-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.nav-cta:hover::before {
    left: 100%;
}

.nav-cta:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow:
        0 6px 20px 0 rgba(16, 185, 129, 0.5),
        0 0 20px 2px rgba(16, 185, 129, 0.3);
}

.nav-cta:active {
    transform: translateY(0) scale(1.02);
}

/* Hero */
.hero {
    padding: 160px 24px 100px;
    max-width: 1200px;
    margin: 0 auto;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text {
    max-width: 540px;
}

.badge {
    display: inline-block;
    padding: 6px 12px;
    background: rgba(10, 132, 255, 0.15);
    color: var(--accent);
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 24px;
    border: 1px solid rgba(10, 132, 255, 0.3);
}

h1 {
    font-size: 4rem;
    line-height: 1.1;
    font-weight: 800;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
    background: linear-gradient(to bottom right, #fff, #ccc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-sub {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.5;
}

.cta-group {
    display: flex;
    flex-direction: column;
    gap: 16px;
    align-items: flex-start;
}

.app-store-badge img {
    height: 56px;
    transition: transform 0.2s;
}

.app-store-badge:hover img {
    transform: translateY(-2px);
}

.rating {
    display: flex;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.stars {
    color: #FFD700;
}

/* iPhone Mockup */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    perspective: 1500px;
}

.iphone-mockup {
    width: 340px;
    height: 680px;
    background: linear-gradient(145deg, #1a1a1a, #0a0a0a);
    border-radius: 56px;
    border: 14px solid #1a1a1a;
    position: relative;
    box-shadow:
        0 0 0 1px rgba(255, 255, 255, 0.1),
        0 60px 120px -30px rgba(0, 0, 0, 0.8),
        inset 0 0 0 1px rgba(255, 255, 255, 0.05);
    overflow: hidden;
    transform: rotateY(-8deg) rotateX(3deg) scale(0.95);
    transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.iphone-mockup:hover {
    transform: rotateY(0) rotateX(0) scale(1);
}

.notch {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 32px;
    background: #000;
    border-bottom-left-radius: 20px;
    border-bottom-right-radius: 20px;
    z-index: 10;
    box-shadow: inset 0 -2px 4px rgba(255, 255, 255, 0.1);
}

.screen {
    width: 100%;
    height: 100%;
    background: transparent;
    padding: 0;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    border-radius: 40px;
}

.screen img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 40px;
}

.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    color: #fff;
    font-weight: 700;
    font-size: 1.1rem;
    padding: 0 4px;
}

.avatar {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--accent), #0066cc);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: 0 2px 8px rgba(10, 132, 255, 0.3);
}

.wish-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    flex: 1;
    padding: 0 4px;
}

.wish-item {
    background-color: #222;
    border-radius: 18px;
    aspect-ratio: 1;
    background-size: cover;
    background-position: center;
    position: relative;
    box-shadow:
        0 4px 16px rgba(0, 0, 0, 0.3),
        inset 0 0 0 1px rgba(255, 255, 255, 0.1);
    transition: transform 0.3s ease;
}

.wish-item:hover {
    transform: translateY(-2px);
}

.wish-price {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(8px);
    padding: 6px 10px;
    border-radius: 10px;
    font-size: 0.7rem;
    font-weight: 700;
    color: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.fab {
    position: absolute;
    bottom: 28px;
    right: 28px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--accent), #0066cc);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: #fff;
    box-shadow:
        0 8px 24px var(--accent-glow),
        0 4px 12px rgba(0, 0, 0, 0.4);
    transition: transform 0.3s ease;
}

.fab:hover {
    transform: scale(1.1);
}

/* Social Proof */
.social-proof {
    text-align: center;
    padding: 60px 24px;
    background: var(--surface-1);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.social-proof p {
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-weight: 700;
    font-size: 18px;
}

.logos {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.logo-text {
    font-weight: 700;
    font-size: 1.5rem;
    color: #444;
    text-transform: uppercase;
}

/* Features */
.features {
    padding: 120px 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.2rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.feature-card {
    background: var(--surface-2);
    padding: 40px;
    border-radius: 24px;
    border: 1px solid var(--border);
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
}

.feature-card .icon {
    font-size: 2.5rem;
    margin-bottom: 24px;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-secondary);
}

/* Use Cases */
.use-cases {
    padding: 0 24px 120px;
    max-width: 1200px;
    margin: 0 auto;
}

.use-case-row {
    display: flex;
    align-items: center;
    gap: 60px;
    margin-bottom: 100px;
}

.use-case-row.reverse {
    flex-direction: row-reverse;
}

.use-case-text {
    flex: 1;
}

.use-case-text h3 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.use-case-text p {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.use-case-visual {
    flex: 1;
    height: 400px;
    border-radius: 30px;
    background: #333;
}

.gradient-1 {
    background: linear-gradient(45deg, #00C6FF, #0072FF);
}

.gradient-2 {
    background: linear-gradient(45deg, #FF512F, #DD2476);
}

/* Testimonials */
.testimonials {
    padding: 120px 24px;
    background: var(--surface-1);
    text-align: center;
}

.testimonials h2 {
    font-size: 2.5rem;
    margin-bottom: 60px;
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.testimonial-card {
    background: var(--bg-color);
    padding: 30px;
    border-radius: 20px;
    text-align: left;
    border: 1px solid var(--border);
}

.testimonial-card p {
    font-size: 1.1rem;
    margin-bottom: 24px;
    font-style: italic;
}

.user {
    display: flex;
    align-items: center;
    gap: 12px;
}

.avatar-circle {
    width: 40px;
    height: 40px;
    background: var(--surface-2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--text-secondary);
}

.user-info {
    display: flex;
    flex-direction: column;
}

.name {
    font-weight: 600;
    font-size: 0.9rem;
}

.handle {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* FAQ */
.faq {
    padding: 120px 24px;
    max-width: 800px;
    margin: 0 auto;
}

.faq h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
}

.accordion-item {
    border-bottom: 1px solid var(--border);
}

.accordion-header {
    width: 100%;
    text-align: left;
    padding: 24px 0;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.accordion-header::after {
    content: '+';
    font-size: 1.5rem;
    font-weight: 400;
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.accordion-content p {
    padding-bottom: 24px;
    color: var(--text-secondary);
}

.accordion-item.active .accordion-content {
    max-height: 200px;
}

.accordion-item.active .accordion-header::after {
    content: '-';
}

/* Footer */
.site-footer {
    padding: 80px 24px 40px;
    border-top: 1px solid var(--border);
    max-width: 1200px;
    margin: 0 auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.2rem;
}

.footer-logo {
    width: 32px;
    height: 32px;
    border-radius: 8px;
}

.footer-links {
    display: flex;
    gap: 30px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--text-primary);
}

.copyright {
    text-align: center;
    color: #444;
    font-size: 0.9rem;
}

/* Founders */
.founders {
    padding: 60px 24px;
    background: var(--surface-2);
    text-align: center;
    border-top: 1px solid var(--border);
}

.founders-grid {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 60px;
    flex-wrap: wrap;
}

.founder-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.founder-avatar {
    font-size: 50px;
    background: var(--surface-1);
    width: 100px;
    height: 100px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.founder-card h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .hero {
        padding-top: 120px;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .hero-text {
        margin: 0 auto;
    }

    .cta-group {
        align-items: center;
    }

    h1 {
        font-size: 2.5rem;
    }

    .iphone-mockup {
        width: 280px;
        height: 560px;
        transform: rotateY(0) rotateX(0) scale(0.9);
    }

    .iphone-mockup:hover {
        transform: rotateY(0) rotateX(0) scale(1);
    }

    .fab {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
        bottom: 20px;
        right: 20px;
    }

    .use-case-row {
        flex-direction: column;
        gap: 40px;
    }

    .use-case-row.reverse {
        flex-direction: column;
    }

    .use-case-visual {
        width: 100%;
        height: 300px;
    }

    .footer-content {
        flex-direction: column;
        gap: 30px;
    }
}

/* Christmas Countdown Banner */
.countdown-banner {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(90deg, #E74C3C 0%, #C0392B 100%);
    padding: 12px 24px;
    text-align: center;
    z-index: 2000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.countdown-text {
    color: #ffffff;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: -0.2px;
}

#days-left {
    font-weight: 800;
    color: #F1C40F;
}

/* Adjust navbar for countdown banner */
.navbar {
    top: 48px;
}

/* Snow Canvas */
#snow-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    /* Behind all content */
    opacity: 0.5;
    /* Additional lightness layer */
}

@media (max-width: 768px) {
    .countdown-text {
        font-size: 12px;
    }

    .navbar {
        top: 44px;
    }

    .countdown-banner {
        padding: 10px 16px;
    }
}