/* Apple-inspired Design System */
:root {
    --primary-blue: #0066cc;
    --focus-blue: #0071e3;
    --near-black: #1d1d1f;
    --pure-white: #ffffff;
    --parchment: #f5f5f7;
    --nav-bg: rgba(255, 255, 255, 0.8);
    --border-light: rgba(0, 0, 0, 0.08);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--near-black);
    background: var(--pure-white);
    line-height: 1.47;
    font-size: 17px;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { font-weight: 600; letter-spacing: -0.02em; }
h1 { font-size: 56px; line-height: 1.07; margin-bottom: 20px; }
h2 { font-size: 40px; line-height: 1.1; margin-bottom: 15px; }
h3 { font-size: 24px; margin-bottom: 10px; }
p { margin-bottom: 20px; color: var(--near-black); }
.text-muted { color: rgba(0,0,0,0.6); font-size: 14px; }

.global-nav {
    position: sticky;
    top: 0;
    width: 100%;
    background: var(--nav-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
    z-index: 1000;
}
.nav-container {
    max-width: 980px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    text-decoration: none;
    color: var(--near-black);
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.04em;
}
.logo .somos { font-size: 0.5em; font-weight: 400; text-transform: lowercase; margin-right: 4px; }
.logo .alc { font-size: 1em; letter-spacing: 0.05em; }

.nav-links { display: flex; gap: 24px; }
.nav-links a {
    text-decoration: none;
    color: var(--near-black);
    font-size: 14px;
    transition: opacity 0.2s;
}
.nav-links a:hover { opacity: 0.7; }

.section-light { background: var(--pure-white); padding: 80px 20px; }
.section-dark { background: var(--parchment); padding: 80px 20px; }
.container { max-width: 980px; margin: 0 auto; text-align: center; }

/* Hero Flex */
.hero-flex {
    display: flex;
    align-items: center;
    gap: 40px;
    text-align: left;
}
.hero-text { flex: 1; }
.hero-text p { max-width: 100%; }
.hero-image { flex: 1; text-align: right; }
.hero-image img {
    width: 100%;
    max-width: 450px;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.06);
    object-fit: cover;
}

@media (max-width: 768px) {
    .hero-flex { flex-direction: column; text-align: center; }
    .hero-image { text-align: center; margin-top: 30px; }
    .hero-text .btn-container { justify-content: center !important; }
    
    .nav-container { flex-direction: column; padding: 15px 20px 5px; }
    .logo { text-align: center; margin-bottom: 15px; width: 100%; display: block; }
    .nav-links { 
        width: 100%; 
        overflow-x: auto; 
        white-space: nowrap; 
        padding-bottom: 10px; 
        gap: 20px; 
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none; 
    }
    .nav-links::-webkit-scrollbar { display: none; }
}

.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; margin-top: 40px; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 24px; margin-top: 40px; }

.card {
    background: var(--pure-white);
    border: 1px solid var(--border-light);
    border-radius: 18px;
    padding: 30px;
    text-align: left;
    display: flex;
    flex-direction: column;
}
.card-title { font-size: 21px; margin-bottom: 10px; }
.card-price { font-size: 28px; font-weight: 600; margin-bottom: 20px; }
.card-price span { font-size: 14px; font-weight: 400; color: rgba(0,0,0,0.5); }
.card-features { list-style: none; margin-bottom: 30px; }
.card-features li { padding: 8px 0; border-bottom: 1px solid var(--border-light); font-size: 14px; }
.card-features li:last-child { border-bottom: none; }
.card-features li::before { content: "✓ "; color: var(--primary-blue); font-weight: bold; }

.card p { flex-grow: 1; }
.card-features { flex-grow: 1; }

.btn-primary {
    display: inline-block;
    background: var(--primary-blue);
    color: var(--pure-white);
    text-decoration: none;
    padding: 12px 24px;
    border-radius: 980px;
    font-weight: 400;
    font-size: 17px;
    transition: transform 0.1s, background 0.2s;
    text-align: center;
    border: none;
    cursor: pointer;
}
.btn-primary:hover { background: var(--focus-blue); }
.btn-primary:active { transform: scale(0.95); }

.btn-secondary {
    display: inline-block;
    background: transparent;
    color: var(--primary-blue);
    text-decoration: none;
    padding: 12px 24px;
    border-radius: 980px;
    font-weight: 400;
    font-size: 17px;
    border: 1px solid var(--primary-blue);
    transition: transform 0.1s;
    text-align: center;
}
.btn-secondary:active { transform: scale(0.95); }

.card .btn-primary, .card .btn-secondary { margin-top: auto; }

footer { background: var(--parchment); padding: 40px 20px; text-align: center; font-size: 12px; color: rgba(0,0,0,0.5); border-top: 1px solid var(--border-light); }