/* 
   Modern Design System 2025 - Parque de las Naciones
   Nature, Sports, and Freshness 
*/

:root {
    --primary-green: #2E7D32;
    --primary-blue: #0288D1;
    --accent-green: #4CAF50;
    --accent-blue: #03A9F4;
    --bg-light: #F9FBFA;
    --text-dark: #2C3E50;
    --text-muted: #607D8B;
    --white: #FFFFFF;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --radius: 12px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

/* --- Header & Navigation --- */
header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 5%;
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-green);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo span {
    color: var(--primary-blue);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: var(--transition);
    font-size: 0.95rem;
}

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

/* --- Hero Section --- */
.hero {
    height: 80vh;
    background: linear-gradient(rgba(0,0,0,0.3), rgba(0,0,0,0.3)), url('imagen/Parque 016.jpg');
    background-size: cover;
    background-position: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: var(--white);
    padding: 0 1rem;
}

.hero h1 {
    font-size: clamp(2.5rem, 8vw, 4rem);
    margin-bottom: 1rem;
    font-weight: 800;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.hero p {
    font-size: 1.25rem;
    max-width: 600px;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.btn {
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    display: inline-block;
}

.btn-primary {
    background-color: var(--primary-green);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(46, 125, 50, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(46, 125, 50, 0.4);
}

/* --- Main Content --- */
main {
    max-width: 1200px;
    margin: 4rem auto;
    padding: 0 5%;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--primary-green);
    margin-bottom: 0.5rem;
}

.section-title p {
    color: var(--text-muted);
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-10px);
}

.card-img {
    height: 200px;
    background-size: cover;
    background-position: center;
}

.card-content {
    padding: 1.5rem;
}

.card h3 {
    margin-bottom: 0.75rem;
    color: var(--primary-green);
}

/* --- Footer --- */
footer {
    background-color: #f0f4f2;
    padding: 4rem 5% 2rem;
    margin-top: 5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    max-width: 1200px;
    margin: 0 auto;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    margin-top: 3rem;
    border-top: 1px solid #dee2e6;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* --- Mobile Menu --- */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--primary-green);
    border-radius: 2px;
}

@media (max-width: 768px) {
    nav ul {
        display: none;
    }
    .menu-toggle {
        display: flex;
    }
    .hero h1 {
        font-size: 2.5rem;
    }
}