:root {
    --yellow: #FFD93D;
    --black: #0F0F0F;
    --gray: #999999;
    --light-gray: #1A1A1A;
    --white: #FFFFFF;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--black);
    color: var(--white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--black);
    border-bottom: 1px solid #222;
    z-index: 100;
    padding: 20px 0;
}

    .navbar .container {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

.logo-img {
    height: 40px;
}

.nav-links {
    display: flex;
    gap: 40px;
    align-items: center;
}

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

    .nav-link:hover {
        color: var(--yellow);
    }

.cta-nav {
    background: var(--yellow);
    color: var(--black);
    padding: 10px 24px;
    border-radius: 6px;
    font-weight: 600;
}

    .cta-nav:hover {
        background: #FFC700;
    }

/* Hero */
.hero-section {
    padding: 140px 0 80px;
    background: var(--black);
}

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

.hero-title {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    color: var(--white);
}

    .hero-title .accent {
        color: var(--yellow);
    }

.hero-description {
    font-size: 18px;
    color: var(--gray);
    margin-bottom: 32px;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 16px;
}

.btn {
    display: inline-block;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--yellow);
    color: var(--black);
}

    .btn-primary:hover {
        background: #FFC700;
        transform: translateY(-2px);
    }

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

    .btn-secondary:hover {
        background: var(--white);
        color: var(--black);
    }

.phone-img {
    width: 100%;
    max-width: 350px;
    margin: 0 auto;
    display: block;
    border-radius: 16px;
}

/* Features */
.features-section {
    padding: 100px 0;
    background: var(--light-gray);
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
    text-align: center;
    color: var(--white);
}

.section-subtitle {
    font-size: 18px;
    color: var(--gray);
    text-align: center;
    margin-bottom: 64px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    background: var(--black);
    padding: 40px 32px;
    border-radius: 8px;
    border: 1px solid #222;
    transition: transform 0.2s;
}

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

.feature-icon {
    width: 56px;
    height: 56px;
    background: var(--yellow);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

    .feature-icon svg {
        width: 28px;
        height: 28px;
        stroke: var(--black);
    }

.feature-title {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--white);
}

.feature-description {
    font-size: 15px;
    color: var(--gray);
    line-height: 1.6;
}

.feature-img {
    width: 100%;
    margin-top: 24px;
    border-radius: 8px;
}

/* How It Works */
.how-section {
    padding: 100px 0;
    background: var(--black);
}

.steps-container {
    max-width: 800px;
    margin: 64px auto 0;
}

.step-item {
    display: flex;
    gap: 32px;
    margin-bottom: 48px;
    align-items: flex-start;
}

.step-number {
    font-size: 48px;
    font-weight: 700;
    color: var(--yellow);
    min-width: 80px;
}

.step-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--white);
}

.step-description {
    font-size: 16px;
    color: var(--gray);
    line-height: 1.6;
}

/* Download */
.download-section {
    padding: 100px 0;
    background: var(--white);
    color: var(--black);
    text-align: center;
}

.download-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--black);
}

.download-description {
    font-size: 18px;
    color: #666;
    margin-bottom: 48px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 24px;
}

.store-button {
    background: var(--black);
    color: var(--white);
    padding: 16px 28px;
    border-radius: 8px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    transition: transform 0.2s;
}

    .store-button:hover {
        transform: translateY(-2px);
        background: #1A1A1A;
    }

    .store-button svg {
        width: 32px;
        height: 32px;
    }

    .store-button div {
        text-align: left;
    }

.store-text {
    font-size: 11px;
    font-weight: 400;
    display: block;
}

.store-name {
    font-size: 18px;
    font-weight: 600;
    display: block;
}

/* Footer */
.footer {
    background: var(--light-gray);
    padding: 60px 0 32px;
    border-top: 1px solid #222;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-logo {
    height: 50px;
    margin-bottom: 16px;
}

.footer-tagline {
    color: var(--gray);
    font-size: 14px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--white);
}

.footer-column a {
    display: block;
    color: var(--gray);
    text-decoration: none;
    font-size: 14px;
    margin-bottom: 10px;
    transition: color 0.2s;
}

    .footer-column a:hover {
        color: var(--yellow);
    }

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid #222;
    color: var(--gray);
    font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-grid,
    .features-grid,
    .footer-content,
    .footer-links {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .hero-title {
        font-size: 36px;
    }

    .section-title {
        font-size: 32px;
    }

    .nav-links {
        display: none;
    }

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

    .step-number {
        font-size: 36px;
        min-width: 60px;
    }
}