/* ===== Optimized Components CSS - Enhanced 60-30-10 Compliance ===== */

/* Button System - Proper accent color usage (10% rule) */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary {
    background-color: var(--primary-600);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-500);
    transform: translateY(-1px);
}

/* Reserve accent color for primary CTAs only */
.btn-accent {
    background-color: var(--accent-500);
    color: var(--neutral-800);
}

.btn-accent:hover {
    background-color: var(--accent-600);
    transform: translateY(-1px);
}

.btn-outline {
    background-color: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-outline:hover {
    background-color: var(--primary-600);
    color: white;
    border-color: var(--primary-600);
}

/* Filter buttons for projects page */
.filter-btn {
    transition: all 0.2s ease;
}

.filter-btn.active {
    background-color: var(--primary-600);
    color: white;
    border-color: var(--primary-600);
}

/* Use brand colors for secondary actions */
.btn-secondary {
    background-color: var(--primary-300);
    color: white;
}

.btn-secondary:hover {
    background-color: var(--primary-400);
}

/* Cards */
.card {
    background: var(--bg-white);
    padding: var(--space-xl);
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: box-shadow 0.2s ease;
}

.card:hover {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

/* Project Cards */
.project-card {
    background: var(--bg-white);
    padding: var(--space-xl);
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.project-header {
    margin-bottom: var(--space-lg);
    color: var(--primary-600);
}

.project-content {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.project-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
}

.project-tag {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: var(--text-sm);
    font-weight: 500;
}

/* Navigation */
site-header {
    display: block;
}

.nav {
    background: var(--nav-bg-light, rgba(250, 250, 251, 0.95));
    border-bottom: 1px solid var(--nav-border-light, rgba(30, 58, 138, 0.1));
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.nav.scrolled {
    background: rgba(250, 250, 251, 0.98);
    box-shadow: 0 2px 20px rgba(30, 58, 138, 0.1);
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--space-lg);
    margin: 0;
    padding: 0;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-600);
}

body.dark-mode .nav-link:hover,
body.dark-mode .nav-link.active {
    color: var(--primary-300);
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    color: var(--text-primary);
    margin-left: 0.5rem;
    transition: color 0.2s ease;
}

.theme-toggle,
.mobile-menu {
    -webkit-appearance: none;
    appearance: none;
    background-color: transparent;
    border: 0;
}

.mobile-menu:hover {
    color: var(--primary-600);
}

.mobile-menu:active {
    transform: scale(0.95);
}

.mobile-menu-container {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background: var(--bg-white);
    border-top: 1px solid var(--border-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    z-index: 99;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.3s ease;
    opacity: 0;
}

.mobile-menu-container.active {
    max-height: 500px;
    opacity: 1;
}

.mobile-menu-container .nav-links {
    flex-direction: column;
    padding: var(--space-lg);
    gap: var(--space-md);
}

/* Statistics - Consistent brand color usage */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--space-lg);
}

.stat-card {
    text-align: center;
    padding: var(--space-lg);
    background: var(--bg-white);
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border-top: 4px solid var(--primary-600);
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(30, 58, 138, 0.1);
}

.stat-card.secondary {
    border-top-color: var(--primary-400);
}

.stat-card.tertiary {
    border-top-color: var(--primary-300);
}

.stat-number {
    font-size: var(--text-4xl);
    font-weight: 700;
    color: var(--primary-600);
    display: block;
    margin-bottom: var(--space-sm);
}

.stat-card.secondary .stat-number {
    color: var(--primary-400);
}

.stat-card.tertiary .stat-number {
    color: var(--primary-300);
}

.stat-label {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

/* Hero Badge - Use brand colors (30% rule) instead of accent */
.hero-badge {
    display: inline-flex;
    align-items: center;
    background: var(--primary-300);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-size: var(--text-sm);
    font-weight: 600;
    margin-bottom: var(--space-lg);
}

/* Skills - Better visual hierarchy with brand colors */
.skill-category {
    padding: var(--space-xl);
    background: var(--bg-white);
    border-radius: 12px;
    border-left: 4px solid var(--primary-600);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.skill-category:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(30, 58, 138, 0.1);
}

.skill-category:nth-child(1) {
    border-left-color: var(--primary-600);
}

.skill-category:nth-child(2) {
    border-left-color: var(--primary-400);
}

.skill-category:nth-child(3) {
    border-left-color: var(--accent-500);
}

.skill-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-top: var(--space-md);
}

/* Responsive improvements for mobile */
@media (max-width: 768px) {
    .skill-category {
        padding: var(--space-lg);
        margin-bottom: var(--space-md);
    }
    
    .skill-tag {
        font-size: 0.875rem;
        padding: 0.375rem 0.75rem;
    }
}

.skill-tag {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: var(--space-xs) var(--space-sm);
    border-radius: 6px;
    font-size: var(--text-sm);
    font-weight: 500;
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.skill-tag:hover {
    background: var(--primary-600);
    color: white;
    border-color: var(--primary-500);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(30, 58, 138, 0.15);
}

/* Scroll Progress */
.scroll-indicator {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--bg-secondary);
    z-index: 1000;
}

.scroll-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-600), var(--accent-500));
    width: 0%;
    transition: width 0.1s ease;
}

/* Lazy Loading */
.lazy-load {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.lazy-load.loaded {
    opacity: 1;
    transform: translateY(0);
}

/* Contact Icons */
.contact-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: var(--space-md);
    transition: background-color 0.3s ease;
}

/* Contact Section Links - Modern UI/UX best practices */
#contact .card a {
    color: var(--primary-600);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: color 0.2s ease;
}

/* Maintain same color for visited links */
#contact .card a:visited {
    color: var(--primary-600);
}

/* Hover state with underline animation */
#contact .card a:hover {
    color: var(--primary-500);
}

#contact .card a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-600);
    transition: width 0.3s ease;
}

#contact .card a:hover::after {
    width: 100%;
}

/* Active state */
#contact .card a:active {
    color: var(--primary-700);
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-600);
    color: white;
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 6px;
}

/* Responsive Design */
@media (max-width: 768px) {
    /* Hide only the desktop nav links, not the mobile menu ones */
    .nav-content > .nav-links {
        display: none;
    }
    
    .mobile-menu {
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    /* Ensure mobile menu container nav links can be visible when active */
    .mobile-menu-container .nav-links {
        display: flex;
    }
    
    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .about-content {
        text-align: center;
    }
    
    .about-story {
        text-align: center;
    }
}

@media (max-width: 640px) {
    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn {
        justify-content: center;
    }
}