/* ===== Components CSS - Reusable Components ===== */

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: var(--spacing-sm) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .navbar {
    background: rgba(26, 26, 26, 0.95);
    border-bottom-color: rgba(255, 255, 255, 0.1);
}

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

.nav-logo .logo-link {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-link {
    color: var(--text-primary);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.nav-link:hover {
    background: var(--bg-secondary);
}

.nav-link.active {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--text-white);
}

.theme-toggle {
    background: var(--bg-secondary);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    transition: transform var(--transition-fast);
}

.theme-toggle:hover {
    transform: scale(1.1);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 3px;
    transition: all var(--transition-fast);
}

/* Hero Section */
.hero-section,
.community-hero {
    padding: var(--spacing-xl) var(--spacing-md);
    text-align: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: #1a1a1a;  /* Màu tối thay vì trắng */
    margin-bottom: var(--spacing-lg);
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-sm);
    font-weight: 900;  /* Cực đậm */
    color: #1a1a1a;  /* Màu tối */
    text-shadow: 2px 2px 4px rgba(255,255,255,0.3);
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    font-weight: 700;  /* In đậm */
    color: #2c2c2c;  /* Màu tối */
    opacity: 1;  /* Bỏ opacity */
}

.hero-description {
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
    font-weight: 500;  /* In đậm hơn */
    color: #333;  /* Màu tối */
    opacity: 1;  /* Bỏ opacity */
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 900;  /* Cực đậm */
    margin-bottom: 0.5rem;
    color: #1a1a1a;  /* Màu tối */
}

.stat-label {
    font-size: 1rem;
    font-weight: 600;  /* In đậm */
    color: #2c2c2c;  /* Màu tối */
    opacity: 1;  /* Bỏ opacity */
}

/* Cards */
.feature-card,
.card {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .feature-card,
[data-theme="dark"] .card {
    border-color: rgba(255, 255, 255, 0.1);
}

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

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.feature-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    font-weight: 800;  /* Tăng từ default lên 800 */
}

.feature-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
    font-weight: 500;  /* In đậm hơn */
}

.feature-link {
    color: var(--color-primary);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

/* Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    padding: var(--spacing-lg) 0 var(--spacing-md);
    margin-top: var(--spacing-xl);
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .footer {
    border-top-color: rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.footer-section ul li a:hover {
    color: var(--color-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

[data-theme="dark"] .footer-bottom {
    border-top-color: rgba(255, 255, 255, 0.1);
}

/* Responsive */
@media (max-width: 968px) {
    .nav-menu {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-stats {
        gap: var(--spacing-md);
    }
}