:root {
    --bg: #0a0a0b;
    --bg-raised: #141416;
    --bg-card: #1a1a1f;
    --bg-hover: #222228;
    --text: #f0f0f3;
    --text-muted: #8a8a9a;
    --text-dim: #55556a;
    --accent: #6366f1;
    --accent-glow: rgba(99, 102, 241, 0.15);
    --border: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.12);
    --radius: 20px;
    --radius-sm: 12px;
    --radius-xs: 8px;
    --max-width: 1080px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ─── Navigation ─── */

.nav {
    position: fixed;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 100;
    width: calc(100% - 32px);
    max-width: 720px;
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 24px;
    background: rgba(20, 20, 22, 0.7);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--border);
    border-radius: 100px;
}

.logo {
    text-decoration: none;
    color: var(--text);
    font-weight: 700;
    font-size: 0.95rem;
    letter-spacing: -0.01em;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 8px;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.85rem;
    padding: 6px 14px;
    border-radius: 100px;
    transition: color 0.2s, background 0.2s;
}

.nav-links a:hover {
    color: var(--text);
    background: var(--bg-hover);
}

.nav-cta {
    background: var(--accent) !important;
    color: #fff !important;
}

.nav-cta:hover {
    opacity: 0.9;
}

/* ─── Hero ─── */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 24px 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -40%;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    max-width: 680px;
}

.hero-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent);
    margin-bottom: 24px;
}

.hero h1 {
    font-size: clamp(2.8rem, 7vw, 4.5rem);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.04em;
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.15rem);
    color: var(--text-muted);
    line-height: 1.8;
    max-width: 520px;
    margin: 0 auto 40px;
}

.hero-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ─── Buttons ─── */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-family: var(--font);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
}

.btn-primary:hover {
    filter: brightness(1.15);
    transform: translateY(-1px);
    box-shadow: 0 8px 32px var(--accent-glow);
}

.btn-ghost {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border);
}

.btn-ghost:hover {
    color: var(--text);
    border-color: var(--border-hover);
    background: var(--bg-raised);
}

.btn-coffee {
    background: #ffdd00;
    color: #0a0a0b;
    font-size: 0.9rem;
    padding: 12px 24px;
}

.btn-coffee:hover {
    filter: brightness(1.05);
    transform: translateY(-1px);
    box-shadow: 0 8px 24px rgba(255, 221, 0, 0.2);
}

/* ─── Sections ─── */

.section {
    padding: 120px 0;
}

.section-alt {
    background: var(--bg-raised);
}

.section-tag {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent);
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(2rem, 4.5vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 48px;
}

/* ─── App Showcase (ReviseIt) ─── */

.app-showcase {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 48px;
    margin-bottom: 32px;
}

.app-badge {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 6px 16px;
    background: var(--accent-glow);
    color: var(--accent);
    border-radius: 100px;
    margin-bottom: 20px;
}

.app-showcase-text h3 {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.app-showcase-text > p {
    color: var(--text-muted);
    font-size: 1.05rem;
    line-height: 1.8;
    max-width: 600px;
    margin-bottom: 28px;
}

.feature-list {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 40px;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.feature-icon {
    color: var(--accent);
    font-size: 0.7rem;
}

.app-showcase-screens {
    display: flex;
    gap: 16px;
    overflow-x: auto;
    padding: 4px 0 12px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.app-showcase-screens::-webkit-scrollbar {
    display: none;
}

.phone {
    flex: 0 0 auto;
    width: 200px;
    border-radius: 22px;
    overflow: hidden;
    background: #000;
    border: 1px solid var(--border);
    scroll-snap-align: start;
    transition: transform 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.phone:hover {
    transform: translateY(-8px);
}

.phone img {
    width: 100%;
    height: auto;
    display: block;
}

/* ─── App Mini Grid ─── */

.app-mini-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.app-mini {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: border-color 0.25s, transform 0.25s;
    display: flex;
    flex-direction: column;
}

.app-mini:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
}

.app-mini-screens {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 24px;
}

.app-mini-screens .phone {
    width: 160px;
}

.app-mini-screens--double .phone {
    width: 130px;
}

.app-mini-info h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.app-mini-info p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.7;
}

/* ─── About ─── */

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}

.about-body p {
    color: var(--text-muted);
    font-size: 1.05rem;
    line-height: 1.9;
    margin-bottom: 16px;
}

.about-me {
    margin-top: 32px;
    padding: 28px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

.about-me h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.about-me p {
    font-size: 0.95rem !important;
    line-height: 1.7 !important;
    margin-bottom: 20px !important;
}

.about-me .btn-coffee {
    margin-top: 4px;
}

.values-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.value-card {
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: border-color 0.2s;
}

.value-card:hover {
    border-color: var(--border-hover);
}

.value-icon {
    color: var(--accent);
    font-size: 0.7rem;
    display: block;
    margin-bottom: 12px;
}

.value-card h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.value-card p {
    color: var(--text-muted);
    font-size: 0.85rem;
    line-height: 1.6;
}

/* ─── Contact ─── */

.contact-block {
    text-align: center;
    max-width: 520px;
}

.contact-body {
    color: var(--text-muted);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 32px;
}

/* ─── Privacy Policy Page ─── */

.policy-page {
    padding-top: 140px;
}

.policy-container {
    max-width: 720px;
}

.policy-updated {
    font-size: 0.85rem;
    color: var(--text-dim);
    margin-bottom: 48px;
}

.policy-content h2 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-top: 40px;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.policy-content p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 12px;
}

.policy-content ul {
    list-style: none;
    padding: 0;
    margin-bottom: 16px;
}

.policy-content ul li {
    position: relative;
    padding-left: 20px;
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.8;
}

.policy-content ul li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--text-dim);
}

.policy-content a {
    color: var(--accent);
    text-decoration: none;
    transition: opacity 0.2s;
}

.policy-content a:hover {
    opacity: 0.8;
}

.policy-content strong {
    color: var(--text);
    font-weight: 600;
}

/* ─── Footer ─── */

.footer {
    border-top: 1px solid var(--border);
    padding: 28px 0;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-brand {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--text-dim);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.2s;
}

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

.footer-copy {
    font-size: 0.8rem;
    color: var(--text-dim);
}

/* ─── Responsive ─── */

@media (max-width: 768px) {
    .nav {
        top: 12px;
        width: calc(100% - 24px);
    }

    .nav-inner {
        padding: 10px 16px;
    }

    .nav-links {
        gap: 4px;
    }

    .nav-links a {
        padding: 6px 10px;
        font-size: 0.8rem;
    }

    .hero {
        min-height: 85vh;
        padding: 100px 20px 60px;
    }

    .section {
        padding: 80px 0;
    }

    .app-showcase {
        padding: 28px;
    }

    .feature-list {
        grid-template-columns: 1fr;
    }

    .phone {
        width: 160px;
        border-radius: 18px;
    }

    .app-mini-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .app-mini-screens .phone {
        width: 140px;
    }

    .app-mini-screens--double .phone {
        width: 120px;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .values-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .footer-inner {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .nav-cta {
        display: none !important;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .app-showcase-text h3 {
        font-size: 1.4rem;
    }
}