/* CSS Principal - Corre por México */
/* Version: 1.0.0 */

:root {
    --primary: #dc2626;
    --primary-dark: #991b1b;
    --secondary: #10b981;
    --accent: #3b82f6;
    --dark: #1f2937;
    --gray: #6b7280;
    --light: #f9fafb;
    --white: #ffffff;
    --shadow: 0 4px 15px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.12);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background: var(--light);
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary);
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    color: var(--dark);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #dc2626 0%, #7f1d1d 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero p {
    font-size: 1.2rem;
    opacity: 0.95;
    max-width: 600px;
    margin: 0 auto 2rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
    max-width: 800px;
    margin: 3rem auto 0;
}

.stat-card {
    background: rgba(255,255,255,0.1);
    padding: 1.5rem;
    border-radius: 10px;
    backdrop-filter: blur(10px);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    display: block;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* Search Section */
.search-section {
    background: white;
    margin: -2rem auto 3rem;
    max-width: 1000px;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow-lg);
    position: relative;
    z-index: 10;
}

.search-form {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr auto;
    gap: 1rem;
    align-items: end;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--gray);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group select {
    padding: 0.75rem;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
}

.search-btn {
    background: var(--primary);
    color: white;
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.search-btn:hover {
    background: var(--primary-dark);
}

/* Quick Filters */
.quick-filters {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.filter-chip {
    padding: 0.5rem 1rem;
    background: var(--light);
    border: 2px solid transparent;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 0.9rem;
    font-weight: 500;
}

.filter-chip:hover {
    background: #fee2e2;
    border-color: var(--primary);
}

.filter-chip.active {
    background: var(--primary);
    color: white;
}

/* Race Cards */
.race-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
}

.race-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
}

.race-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.race-image {
    height: 200px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: white;
}

.race-date-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--primary);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-weight: bold;
    font-size: 0.9rem;
}

.race-action {
    margin-top: 1rem;
    display: flex;
    gap: 0.75rem;
}

.btn-info {
    flex: 1;
    padding: 0.75rem;
    background: var(--light);
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    color: var(--dark);
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    transition: all 0.3s;
}

.btn-website {
    flex: 1;
    padding: 0.75rem;
    background: var(--primary);
    border: none;
    border-radius: 8px;
    color: white;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    transition: background 0.3s;
}

/* Footer */
footer {
    background: var(--dark);
    color: white;
    padding: 3rem 0 1.5rem;
}

/* Responsive */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }

    .nav-menu {
        display: none;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .search-form {
        grid-template-columns: 1fr;
    }

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