/* ========================================
   Rebuf — Global Styles
   Dark theme · #438AFF accent · Rounded
   ======================================== */

:root {
    --accent: #438AFF;
    --accent-light: #6BA3FF;
    --accent-glow: rgba(67, 138, 255, 0.15);
    --accent-glow-strong: rgba(67, 138, 255, 0.3);
    --bg-primary: #0A0A0F;
    --bg-secondary: #111118;
    --bg-card: #16161F;
    --bg-card-hover: #1C1C28;
    --border: rgba(255, 255, 255, 0.06);
    --border-light: rgba(255, 255, 255, 0.1);
    --text-primary: #F0F0F5;
    --text-secondary: #8888A0;
    --text-muted: #55556A;
    --radius: 16px;
    --radius-sm: 10px;
    --radius-lg: 24px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

/* ========================================
   Navigation
   ======================================== */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 0 24px;
    transition: all 0.3s ease;
}

.nav-scrolled {
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.nav-inner {
    max-width: 1120px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-logo {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: -0.03em;
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.2s;
}

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

.nav-cta {
    background: var(--accent);
    color: white !important;
    padding: 10px 22px;
    border-radius: 100px;
    font-weight: 600;
    font-size: 0.85rem !important;
    transition: all 0.2s;
}

.nav-cta:hover {
    background: var(--accent-light);
    transform: translateY(-1px);
}

/* ========================================
   Hero
   ======================================== */

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

.hero-glow {
    position: absolute;
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 600px;
    background: radial-gradient(ellipse at center, var(--accent-glow) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 720px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    padding: 8px 18px;
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(2.8rem, 6vw, 4.5rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent) 0%, #7B61FF 50%, var(--accent-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.15rem;
    line-height: 1.7;
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0 auto 40px;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 56px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--accent);
    color: white;
    padding: 16px 32px;
    border-radius: 100px;
    font-family: 'DM Sans', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.25s ease;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: var(--accent-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(67, 138, 255, 0.3);
}

.btn-primary svg {
    width: 18px;
    height: 18px;
}

.btn-large {
    padding: 18px 40px;
    font-size: 1.05rem;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.stat-number {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.78rem;
    color: var(--text-muted);
    font-weight: 500;
}

.stat-divider {
    width: 1px;
    height: 36px;
    background: var(--border-light);
}

/* Phone Mockup */
.hero-phone {
    position: relative;
    z-index: 2;
    margin-top: 56px;
}

.phone-mockup-img {
    width: 280px;
    border-radius: 36px;
    box-shadow: 
        0 40px 80px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.03);
}

/* ========================================
   Sections — Shared
   ======================================== */

.section-inner {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    margin-bottom: 16px;
}

.section-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 520px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ========================================
   Features
   ======================================== */

.features {
    padding: 120px 0;
    position: relative;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 28px;
    transition: all 0.3s ease;
}

.feature-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-light);
    transform: translateY(-4px);
}

.feature-card-large {
    grid-column: span 1;
}

.feature-icon {
    width: 52px;
    height: 52px;
    background: var(--accent-glow);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 10px;
    letter-spacing: -0.01em;
}

.feature-card p {
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ========================================
   How It Works
   ======================================== */

.how-it-works {
    padding: 120px 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
    max-width: 900px;
    margin: 0 auto;
}

.step {
    flex: 1;
    text-align: center;
    padding: 0 32px;
}

.step-number {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--accent);
    opacity: 0.3;
    line-height: 1;
    margin-bottom: 20px;
}

.step-content h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.step-content p {
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.step-connector {
    width: 1px;
    height: 100px;
    background: linear-gradient(to bottom, var(--border), var(--accent-glow), var(--border));
    flex-shrink: 0;
    margin-top: 20px;
}

/* ========================================
   CTA
   ======================================== */

.cta {
    padding: 140px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-glow {
    position: absolute;
    bottom: -100px;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 400px;
    background: radial-gradient(ellipse at center, var(--accent-glow) 0%, transparent 70%);
    pointer-events: none;
}

.cta-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(2.2rem, 4.5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 16px;
    position: relative;
}

.cta-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    position: relative;
}

/* ========================================
   Footer
   ======================================== */

.footer {
    border-top: 1px solid var(--border);
    padding: 0 24px;
}

.footer-inner {
    max-width: 1120px;
    margin: 0 auto;
}

.footer-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 40px 0;
}

.footer-logo {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.footer-links {
    display: flex;
    gap: 28px;
}

.footer-links a {
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: color 0.2s;
}

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

.footer-bottom {
    padding: 24px 0;
    border-top: 1px solid var(--border);
}

.footer-bottom p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ========================================
   Scroll Animations
   ======================================== */

.animate-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.feature-card.animate-in { transition-delay: calc(var(--i, 0) * 0.08s); }
.feature-card:nth-child(1) { --i: 0; }
.feature-card:nth-child(2) { --i: 1; }
.feature-card:nth-child(3) { --i: 2; }
.feature-card:nth-child(4) { --i: 3; }
.feature-card:nth-child(5) { --i: 4; }
.feature-card:nth-child(6) { --i: 5; }

.step:nth-child(1) { transition-delay: 0s; }
.step:nth-child(3) { transition-delay: 0.15s; }
.step:nth-child(5) { transition-delay: 0.3s; }

/* ========================================
   Legal Pages
   ======================================== */

.legal-page {
    padding: 140px 24px 80px;
    min-height: 100vh;
}

.legal-inner {
    max-width: 680px;
    margin: 0 auto;
}

.legal-inner h1 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 8px;
}

.legal-date {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 48px;
}

.legal-inner h2 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.25rem;
    font-weight: 600;
    margin-top: 40px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.legal-inner p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

.legal-inner ul {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.8;
    padding-left: 20px;
    margin-bottom: 16px;
}

.legal-inner li {
    margin-bottom: 6px;
}

.legal-inner a {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 2px;
}

/* ========================================
   Support Page
   ======================================== */

.support-page {
    padding: 140px 24px 80px;
    min-height: 100vh;
}

.support-inner {
    max-width: 580px;
    margin: 0 auto;
    text-align: center;
}

.support-inner h1 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.support-intro {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 48px;
}

.support-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 48px 40px;
    text-align: center;
}

.support-card-icon {
    width: 64px;
    height: 64px;
    background: var(--accent-glow);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.support-card h2 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.support-card p {
    font-size: 0.92rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.6;
}

.support-email {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent);
    font-weight: 600;
    font-size: 1rem;
    padding: 12px 28px;
    background: var(--accent-glow);
    border-radius: 100px;
    transition: all 0.2s;
}

.support-email:hover {
    background: var(--accent-glow-strong);
}

.support-faq {
    margin-top: 64px;
    text-align: left;
}

.support-faq h2 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 28px;
    text-align: center;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px 28px;
    margin-bottom: 12px;
}

.faq-item h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.faq-item p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ========================================
   Responsive
   ======================================== */

@media (max-width: 768px) {
    .nav-links a:not(.nav-cta) {
        display: none;
    }

    .hero {
        padding: 100px 20px 60px;
    }

    .hero-title {
        font-size: 2.4rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-stats {
        gap: 20px;
    }

    .stat-number {
        font-size: 1.1rem;
    }

    .stat-label {
        font-size: 0.7rem;
    }

    .features {
        padding: 80px 0;
    }

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

    .feature-card {
        padding: 28px 24px;
    }

    .how-it-works {
        padding: 80px 0;
    }

    .steps {
        flex-direction: column;
        align-items: center;
        gap: 40px;
    }

    .step-connector {
        width: 60px;
        height: 1px;
        margin-top: 0;
        background: linear-gradient(to right, var(--border), var(--accent-glow), var(--border));
    }

    .step {
        padding: 0 20px;
    }

    .cta {
        padding: 80px 0;
    }

    .footer-top {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }

    .footer-links {
        gap: 20px;
    }

    .phone-mockup-img {
        width: 240px;
    }

    .support-card {
        padding: 36px 24px;
    }

    .legal-page,
    .support-page {
        padding: 110px 20px 60px;
    }
}