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

:root {
    --primary: #4F46E5;
    --primary-dark: #4338CA;
    --primary-light: #818CF8;
    --bg: #ffffff;
    --bg-secondary: #F8F9FC;
    --text: #1E293B;
    --text-secondary: #64748B;
    --border: #E2E8F0;
    --radius: 12px;
    --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
    --shadow-lg: 0 4px 24px rgba(79,70,229,0.12), 0 8px 32px rgba(0,0,0,0.06);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

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

/* === Header === */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--text);
}

.logo-icon {
    width: 36px;
    height: 36px;
}

.nav {
    display: flex;
    gap: 32px;
}

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

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary);
    border-radius: 1px;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.menu-toggle span {
    width: 22px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: all 0.3s;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.mobile-nav {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: white;
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    flex-direction: column;
    gap: 12px;
    z-index: 99;
    box-shadow: var(--shadow);
}

.mobile-nav.open {
    display: flex;
}

/* === Hero === */
.hero {
    padding: 120px 0 60px;
    background: linear-gradient(135deg, #F8F9FC 0%, #EEF0FF 100%);
    overflow: hidden;
}

.hero .container {
    display: flex;
    align-items: center;
    gap: 60px;
}

.hero-content {
    flex: 1;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, #7C3AED 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 480px;
    margin-bottom: 32px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 12px;
    margin-bottom: 40px;
}

.btn {
    display: inline-flex;
    align-items: center;
    padding: 12px 28px;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 2px 8px rgba(79,70,229,0.3);
}

.btn-primary:hover {
    background: var(--primary-dark);
    box-shadow: 0 4px 16px rgba(79,70,229,0.4);
    transform: translateY(-1px);
}

.btn-outline {
    background: white;
    color: var(--primary);
    border: 1.5px solid var(--primary);
}

.btn-outline:hover {
    background: #F0EFFE;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 24px;
}

.stat strong {
    display: block;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
}

.stat span {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border);
}

/* Phone mockup */
.hero-visual {
    flex-shrink: 0;
}

.phone-mockup {
    width: 280px;
    height: 480px;
    background: #1a1a2e;
    border-radius: 36px;
    padding: 12px;
    box-shadow: var(--shadow-lg), 0 20px 60px rgba(0,0,0,0.15);
    position: relative;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, #0f0f23 0%, #1a1a3e 100%);
    border-radius: 26px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.scan-area {
    width: 180px;
    height: 180px;
    position: relative;
}

.scan-corner {
    position: absolute;
    width: 30px;
    height: 30px;
    border-color: var(--primary-light);
    border-style: solid;
    border-width: 0;
}

.scan-corner.tl {
    top: 0; left: 0;
    border-top-width: 3px;
    border-left-width: 3px;
    border-top-left-radius: 8px;
}

.scan-corner.tr {
    top: 0; right: 0;
    border-top-width: 3px;
    border-right-width: 3px;
    border-top-right-radius: 8px;
}

.scan-corner.bl {
    bottom: 0; left: 0;
    border-bottom-width: 3px;
    border-left-width: 3px;
    border-bottom-left-radius: 8px;
}

.scan-corner.br {
    bottom: 0; right: 0;
    border-bottom-width: 3px;
    border-right-width: 3px;
    border-bottom-right-radius: 8px;
}

.scan-line {
    position: absolute;
    top: 0;
    left: 10px;
    right: 10px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary-light), transparent);
    animation: scanMove 2.5s ease-in-out infinite;
    box-shadow: 0 0 12px rgba(129,140,248,0.5);
}

@keyframes scanMove {
    0%, 100% { top: 5px; }
    50% { top: calc(100% - 5px); }
}

.qr-display {
    margin-top: 30px;
    opacity: 0.9;
}

/* === Features === */
.features {
    padding: 80px 0;
}

.section-title {
    font-size: 2rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.section-desc {
    text-align: center;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto 48px;
    font-size: 1.05rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    padding: 28px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: all 0.25s;
    background: white;
}

.feature-card:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: #EEF0FF;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    color: var(--primary);
}

.feature-icon svg {
    width: 24px;
    height: 24px;
}

.feature-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 8px;
}

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

/* === Download === */
.download {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary) 0%, #7C3AED 100%);
    color: white;
    text-align: center;
}

.download h2 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 12px;
}

.download p {
    opacity: 0.9;
    max-width: 480px;
    margin: 0 auto 32px;
    font-size: 1.05rem;
}

.download-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.store-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    background: rgba(255,255,255,0.15);
    border: 1.5px solid rgba(255,255,255,0.3);
    border-radius: 12px;
    color: white;
    transition: all 0.2s;
}

.store-btn:hover {
    background: rgba(255,255,255,0.25);
    transform: translateY(-2px);
}

.store-btn small {
    display: block;
    font-size: 0.7rem;
    opacity: 0.8;
    text-align: left;
}

.store-btn strong {
    display: block;
    font-size: 1rem;
    text-align: left;
}

/* === Footer === */
.footer {
    padding: 48px 0 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 32px;
}

.footer-brand p {
    margin-top: 12px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    max-width: 300px;
    line-height: 1.6;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
    color: var(--text);
}

.footer-links a,
.footer-contact a {
    display: block;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
    transition: color 0.2s;
}

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

.footer-bottom {
    border-top: 1px solid var(--border);
    padding: 20px 0;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.footer-bottom a {
    color: var(--primary);
    font-weight: 600;
}

/* === Legal Pages === */
.legal-page {
    padding: 100px 0 60px;
    min-height: calc(100vh - 200px);
}

.legal-page h1 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 8px;
}

.legal-page .last-updated {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 36px;
}

.legal-page h2 {
    font-size: 1.3rem;
    font-weight: 700;
    margin: 32px 0 12px;
    color: var(--text);
}

.legal-page p,
.legal-page li {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.75;
    margin-bottom: 12px;
}

.legal-page ul {
    padding-left: 24px;
    margin-bottom: 16px;
}

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

.legal-page a {
    color: var(--primary);
    font-weight: 500;
}

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

/* === Responsive === */
@media (max-width: 768px) {
    .nav {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .hero {
        padding: 100px 0 40px;
    }

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

    .hero h1 {
        font-size: 2rem;
    }

    .hero-desc {
        max-width: 100%;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .phone-mockup {
        width: 220px;
        height: 380px;
    }

    .scan-area {
        width: 140px;
        height: 140px;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .legal-page {
        padding: 80px 0 40px;
    }

    .legal-page h1 {
        font-size: 1.6rem;
    }
}