@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    --apple-dark: #000000;
    --apple-gray: #1d1d1f;
    --apple-text: #f5f5f7;
    --apple-muted: #86868b;
    --apple-blue: #0071e3;
    --apple-light-blue: #2997ff;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--apple-dark);
    color: var(--apple-text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.btn-primary {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 980px;
    text-decoration: none;
    font-size: 17px;
    font-weight: 400;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: #0077ed;
}

.btn-secondary {
    display: inline-block;
    text-decoration: none;
    font-size: 17px;
    color: var(--apple-light-blue);
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    text-decoration: underline;
}

.card {
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

.timeline-item {
    border-left: 2px solid var(--apple-gray);
    padding-left: 30px;
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -6px;
    top: 5px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--apple-blue);
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 48px;
    }

    .hero h2 {
        font-size: 20px;
    }

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

    nav ul {
        gap: 20px;
    }

    nav a {
        font-size: 11px;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

section {
    animation: fadeIn 0.8s ease-out;
}

.card {
    animation: fadeIn 0.8s ease-out;
}

.card:nth-child(1) { animation-delay: 0.1s; }
.card:nth-child(2) { animation-delay: 0.2s; }
.card:nth-child(3) { animation-delay: 0.3s; }

.timeline-item {
    animation: fadeIn 0.8s ease-out;
}

.timeline-item:nth-child(1) { animation-delay: 0.1s; }
.timeline-item:nth-child(2) { animation-delay: 0.2s; }
.timeline-item:nth-child(3) { animation-delay: 0.3s; }