/* UniStudy Italia - GitHub Pages Stylesheet — Premium Version */

:root {
    --primary: #10b981;
    --primary-dark: #059669;
    --primary-light: #d1fae5;
    --secondary: #6366f1;
    --bg: #f8fafc;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    padding: 0;
    margin: 0;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* Header / Hero */
header {
    text-align: center;
    margin-bottom: 48px;
    padding: 60px 20px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 32px;
    color: white;
    box-shadow: var(--shadow-lg);
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.025em;
}

.hero-subtitle {
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto 32px;
    opacity: 0.95;
    color: white;
}

.badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 20px;
    backdrop-filter: blur(4px);
}

.hero-btns {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: 14px;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.2s;
    font-size: 1rem;
    cursor: pointer;
}

.cta-button.primary {
    background: white;
    color: var(--primary-dark) !important;
}

.cta-button.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.cta-button.secondary {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white !important;
}

.cta-button.secondary:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Grids & Cards */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-top: 24px;
}

.card {
    background: white;
    padding: 24px;
    border-radius: 20px;
    border: 1px solid var(--border);
    transition: all 0.2s;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: var(--text);
}

.card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Tech Stack */
.tech-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 20px;
}

.tech-tag {
    padding: 8px 16px;
    background: var(--primary-light);
    color: var(--primary-dark);
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.9rem;
}

/* Testing Section */
.testing-content {
    display: grid;
    gap: 20px;
    margin-top: 24px;
}

.test-item {
    padding: 20px;
    background: #f1f5f9;
    border-radius: 16px;
    border-left: 4px solid var(--primary);
}

.test-item strong {
    display: block;
    font-size: 1.05rem;
    margin-bottom: 6px;
    color: var(--text);
}

.test-item p {
    margin-bottom: 0;
    font-size: 0.95rem;
}

/* Footer */
footer {
    text-align: center;
    margin-top: 64px;
    padding: 48px 20px;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
}

.footer-links {
    margin-top: 16px;
    display: flex;
    justify-content: center;
    gap: 24px;
}

.footer-links a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

/* Responsive */
@media (max-width: 640px) {
    .container {
        padding: 20px 16px;
    }
    
    header {
        padding: 40px 16px;
        border-radius: 24px;
    }

    .hero h1 {
        font-size: 2.25rem;
    }

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