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

:root {
    --primary: #004993;
    --primary-light: #DEE6FB;
    --primary-dark: #003366;
    --accent-orange: #FA9313;
    --accent-green: #0CC44D;
    --text-primary: #212124;
    --text-secondary: rgba(4, 4, 19, 0.55);
    --bg-white: #FFFFFF;
    --bg-light: #F2F4F9;
    --radius: 16px;
    --radius-sm: 12px;
}

html {
    scroll-behavior: smooth;
}

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

.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 rgba(38, 55, 88, 0.06);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.logo-img {
    height: 36px;
    width: auto;
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 15px;
    transition: color 0.2s;
}

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

/* === Hero === */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, #DEE6FB 0%, #FFF6F1 50%, #DEE6FB 100%);
}

.hero-content {
    display: flex;
    align-items: center;
    gap: 64px;
}

.hero-text {
    flex: 1;
}

.hero-text h1 {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -1.5px;
    margin-bottom: 20px;
}

.highlight {
    color: var(--primary);
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 32px;
    max-width: 480px;
}

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

.hero-visual {
    flex: 0 0 auto;
}

.phone-mockup {
    width: 280px;
    height: 560px;
    background: var(--text-primary);
    border-radius: 40px;
    padding: 12px;
    box-shadow: 0 40px 80px rgba(0, 73, 147, 0.15), 0 8px 24px rgba(0, 73, 147, 0.08);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, var(--primary) 0%, var(--primary-dark) 40%, var(--primary-light) 100%);
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 15px;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--primary);
    color: var(--bg-white);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 73, 147, 0.3);
}

.btn-secondary {
    background: rgba(38, 55, 88, 0.06);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: rgba(38, 55, 88, 0.12);
}

/* === Section Titles === */
.section-title {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    letter-spacing: -1px;
    margin-bottom: 12px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 17px;
    margin-bottom: 48px;
}

/* === Features === */
.features {
    padding: 96px 0;
}

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

.feature-card {
    background: var(--bg-light);
    border-radius: var(--radius);
    padding: 32px 28px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 73, 147, 0.08);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-light);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: var(--primary);
}

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

.feature-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.6;
}

/* === How it Works === */
.how-it-works {
    padding: 96px 0;
    background: var(--bg-light);
}

.steps {
    display: flex;
    gap: 32px;
    justify-content: center;
}

.step {
    flex: 1;
    max-width: 320px;
    text-align: center;
    padding: 40px 28px;
    background: var(--bg-white);
    border-radius: var(--radius);
    position: relative;
}

.step-number {
    width: 56px;
    height: 56px;
    background: var(--primary);
    color: var(--bg-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    margin: 0 auto 20px;
}

.step h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.step p {
    color: var(--text-secondary);
    font-size: 15px;
}

/* === Download === */
.download {
    padding: 96px 0;
    text-align: center;
}

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

.store-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 24px;
    background: var(--text-primary);
    color: var(--bg-white);
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: all 0.2s;
}

.store-btn:hover {
    background: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 73, 147, 0.2);
}

.store-btn svg {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
}

.store-btn small {
    display: block;
    font-size: 11px;
    opacity: 0.8;
    text-align: left;
}

.store-btn strong {
    display: block;
    font-size: 16px;
    text-align: left;
}

/* === Footer === */
.footer {
    background: var(--text-primary);
    color: var(--bg-white);
    padding: 64px 0 0;
}

.footer-content {
    display: flex;
    gap: 64px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
    flex: 1;
}

.footer-brand .logo-text {
    color: var(--bg-white);
    font-size: 20px;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.6);
    margin-top: 8px;
    font-size: 14px;
}

.footer-links h4 {
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
    color: rgba(255, 255, 255, 0.5);
}

.footer-links ul {
    list-style: none;
}

.footer-links li + li {
    margin-top: 10px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 15px;
    transition: color 0.2s;
}

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

.footer-bottom {
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
}

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

    .hero {
        padding: 120px 0 60px;
    }

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

    .hero-text h1 {
        font-size: 32px;
    }

    .hero-subtitle {
        margin: 0 auto 28px;
    }

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

    .phone-mockup {
        width: 220px;
        height: 440px;
    }

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

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

    .store-buttons {
        flex-direction: column;
        align-items: center;
    }

    .footer-content {
        flex-direction: column;
        gap: 32px;
    }
}