/* style.css - Premium styling system for playtoearnenespanol.com */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;800&display=swap');

:root {
    --bg-primary: #0a0b10;
    --bg-secondary: #12141c;
    --accent-glow: #6366f1;
    --accent-emerald: #10b981;
    --accent-amber: #f59e0b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --glass-bg: rgba(18, 20, 28, 0.7);
    --glass-border: rgba(255, 255, 255, 0.08);
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Outfit', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

header {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 1rem 2rem;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-glow), var(--accent-emerald));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--text-primary);
    text-shadow: 0 0 10px rgba(99, 102, 241, 0.5);
}

.container {
    max-width: 1200px;
    margin: 3rem auto;
    padding: 0 2rem;
}

.hero {
    text-align: center;
    padding: 6rem 2rem;
    background: radial-gradient(circle at 50% 50%, rgba(99, 102, 241, 0.15) 0%, transparent 60%);
    border-radius: 24px;
    border: 1px solid var(--glass-border);
    margin-bottom: 4rem;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero h1 span {
    background: linear-gradient(135deg, var(--accent-amber), var(--accent-emerald));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto 2rem auto;
}

.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-glow), #4f46e5);
    color: white;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(99, 102, 241, 0.6);
}

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

.card {
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-4px);
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.badge-beginner { background: rgba(16, 185, 129, 0.15); color: var(--accent-emerald); }
.badge-intermediate { background: rgba(245, 158, 11, 0.15); color: var(--accent-amber); }
.badge-advanced { background: rgba(99, 102, 241, 0.15); color: var(--accent-glow); }

.interactive-box {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid var(--glass-border);
    margin-top: 2rem;
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1.5rem;
}

.quiz-option {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    padding: 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
}

.quiz-option:hover {
    background: rgba(99, 102, 241, 0.1);
    border-color: var(--accent-glow);
}

.feedback {
    margin-top: 1.5rem;
    font-weight: 600;
    padding: 1rem;
    border-radius: 8px;
    display: none;
}

.feedback.correct {
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-emerald);
    display: block;
}

.feedback.incorrect {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
    display: block;
}

footer {
    border-top: 1px solid var(--glass-border);
    padding: 3rem 2rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 6rem;
}

footer a {
    color: var(--text-primary);
    text-decoration: none;
}