/* ============================================
   autoElekIA - Landing Styles (Mobile-First)
   ============================================ */

/* ===== VARIABLES ===== */
:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-secondary: #059669;
    --color-dark: #1f2937;
    --color-gray: #6b7280;
    --color-light: #f9fafb;
    --color-white: #ffffff;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    --radius: 0.5rem;
    --radius-lg: 1rem;
    --transition: all 0.2s ease;
}

/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--color-dark);
    background: var(--color-light);
}
img, video { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-dark); }

/* ===== UTILITIES ===== */
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 1rem; }
.btn {
    display: inline-flex; align-items: center; gap: 0.5rem;
    padding: 0.75rem 1.5rem; border-radius: var(--radius);
    font-weight: 500; cursor: pointer; transition: var(--transition);
    border: 2px solid transparent; text-align: center;
}
.btn-primary { background: var(--color-primary); color: white; }
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-outline { border-color: var(--color-primary); color: var(--color-primary); background: transparent; }
.btn-outline:hover { background: var(--color-primary); color: white; }
.btn-success { background: var(--color-secondary); color: white; }
.btn-icon { padding: 0.75rem; border-radius: var(--radius); background: var(--color-light); border: 1px solid #e5e7eb; }
.btn-lg { padding: 1rem 2rem; font-size: 1.1rem; }
.btn-sm { padding: 0.5rem 1rem; font-size: 0.875rem; }

/* ===== HEADER ===== */
.header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255,255,255,0.95); backdrop-filter: blur(8px);
    border-bottom: 1px solid #e5e7eb;
}
.header-content {
    display: flex; align-items: center; justify-content: space-between;
    padding: 1rem 0;
}
.logo {
    display: flex; align-items: center; gap: 0.5rem;
    font-size: 1.25rem; font-weight: 700; color: var(--color-dark);
}
.logo i { color: var(--color-primary); }
.logo span { color: var(--color-primary); }
.mobile-toggle {
    display: block; background: none; border: none; font-size: 1.5rem; cursor: pointer;
}
.nav {
    display: none; flex-wrap: wrap; gap: 1rem; align-items: center;
    position: absolute; top: 100%; left: 0; right: 0;
    background: white; padding: 1rem; border-bottom: 1px solid #e5e7eb;
}
.nav.active { display: flex; }
.nav a:not(.btn) { color: var(--color-dark); font-weight: 500; }
.nav .btn { padding: 0.5rem 1rem; font-size: 0.875rem; }

/* ===== HERO ===== */
.hero {
    padding: 3rem 0; text-align: center;
    background: linear-gradient(135deg, #eff6ff 0%, #ffffff 100%);
}
.hero-title {
    font-size: 2rem; font-weight: 800; margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-subtitle {
    font-size: 1.1rem; color: var(--color-gray); margin-bottom: 2rem; max-width: 600px; margin-left: auto; margin-right: auto;
}
.vin-search {
    max-width: 600px; margin: 0 auto 1rem;
}
.vin-input-group {
    display: flex; gap: 0.5rem; flex-wrap: wrap; justify-content: center;
}
.vin-input-group input {
    flex: 1; min-width: 200px; padding: 1rem; border: 2px solid #e5e7eb;
    border-radius: var(--radius); font-size: 1rem; text-transform: uppercase;
    letter-spacing: 0.05em; transition: var(--transition);
}
.vin-input-group input:focus {
    outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}
.vin-hint { font-size: 0.875rem; color: var(--color-gray); margin-top: 0.5rem; }
.quick-result {
    margin-top: 2rem; padding: 1rem; background: white; border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md); text-align: left;
}

/* ===== VERTICALES ===== */
.verticales { padding: 4rem 0; background: white; }
.section-title {
    text-align: center; font-size: 1.75rem; font-weight: 700; margin-bottom: 2rem;
}
.verticales-grid {
    display: grid; gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}
.vertical-card {
    padding: 1.5rem; border: 1px solid #e5e7eb; border-radius: var(--radius-lg);
    transition: var(--transition); background: white;
}
.vertical-card:hover {
    border-color: var(--color-primary); box-shadow: var(--shadow-lg); transform: translateY(-2px);
}
.vertical-icon {
    width: 48px; height: 48px; border-radius: var(--radius);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex; align-items: center; justify-content: center;
    color: white; font-size: 1.25rem; margin-bottom: 1rem;
}
.vertical-card h3 { font-size: 1.25rem; font-weight: 600; margin-bottom: 0.5rem; }
.vertical-card p { color: var(--color-gray); margin-bottom: 1rem; font-size: 0.95rem; }
.vertical-features { list-style: none; margin-bottom: 1rem; }
.vertical-features li {
    display: flex; align-items: center; gap: 0.5rem;
    font-size: 0.875rem; color: var(--color-dark); margin-bottom: 0.25rem;
}
.vertical-features i { color: var(--color-secondary); font-size: 0.75rem; }

/* ===== CÓMO FUNCIONA ===== */
.como-funciona { padding: 4rem 0; background: var(--color-light); }
.steps {
    display: grid; gap: 2rem; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}
.step { text-align: center; padding: 1rem; }
.step-number {
    width: 40px; height: 40px; border-radius: 50%;
    background: var(--color-primary); color: white;
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; margin: 0 auto 1rem;
}
.step h4 { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.5rem; }
.step p { color: var(--color-gray); font-size: 0.95rem; }

/* ===== MODAL SCANNER ===== */
.modal[hidden] { display: none !important; }
.modal {
    position: fixed; inset: 0; z-index: 1000;
    background: rgba(0,0,0,0.8); display: flex; align-items: center; justify-content: center;
    padding: 1rem;
}
.modal-content {
    background: white; border-radius: var(--radius-lg); width: 100%; max-width: 500px;
    max-height: 90vh; overflow: hidden; display: flex; flex-direction: column;
}
.modal-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 1rem 1.5rem; border-bottom: 1px solid #e5e7eb;
}
.modal-header h3 { font-size: 1.1rem; font-weight: 600; }
.modal-close { background: none; border: none; font-size: 1.5rem; cursor: pointer; color: var(--color-gray); }
.modal-body { padding: 1.5rem; overflow-y: auto; }
.scanner-video {
    width: 100%; border-radius: var(--radius); background: #000; aspect-ratio: 4/3; object-fit: cover;
}
.scanner-controls { display: flex; gap: 1rem; margin-top: 1rem; justify-content: center; }
.scan-result {
    margin-top: 1rem; padding: 1rem; background: #f0fdf4; border: 1px solid #bbf7d0;
    border-radius: var(--radius); text-align: center;
}
.scan-result code {
    display: block; font-size: 1.25rem; font-weight: 600; letter-spacing: 0.1em;
    margin: 0.5rem 0; color: var(--color-dark);
}
.scanner-hint { font-size: 0.875rem; color: var(--color-gray); margin-top: 1rem; text-align: center; }

/* ===== FOOTER ===== */
.footer { background: var(--color-dark); color: white; padding: 3rem 0 1rem; }
.footer-content {
    display: grid; gap: 2rem; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    margin-bottom: 2rem;
}
.footer-brand .logo { color: white; margin-bottom: 0.5rem; }
.footer-brand p { color: #9ca3af; font-size: 0.9rem; }
.footer-links h4 { font-size: 1rem; font-weight: 600; margin-bottom: 1rem; }
.footer-links a {
    display: block; color: #9ca3af; font-size: 0.9rem; margin-bottom: 0.5rem;
}
.footer-links a:hover { color: white; }
.footer-bottom {
    text-align: center; padding-top: 1rem; border-top: 1px solid #374151;
    color: #9ca3af; font-size: 0.875rem;
}

/* ===== MEDIA QUERIES (Tablet + Desktop) ===== */
@media (min-width: 768px) {
    .mobile-toggle { display: none; }
    .nav {
        display: flex !important; position: static; background: transparent;
        padding: 0; border: none; gap: 1.5rem;
    }
    .hero { padding: 5rem 0; }
    .hero-title { font-size: 3rem; }
    .hero-subtitle { font-size: 1.25rem; }
    .vin-input-group input { min-width: 300px; }
    .section-title { font-size: 2.25rem; }
}
@media (min-width: 1024px) {
    .container { padding: 0 2rem; }
    .verticales-grid { grid-template-columns: repeat(3, 1fr); }
    .steps { grid-template-columns: repeat(3, 1fr); }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }