/**
 * ============================================================================
 * COMPONENTS.CSS - Reusable UI Components
 * ============================================================================
 * 
 * Components: Buttons, Cards, Navigation, Skill tags, Project cards
 * Each component uses theme variables from themes.css
 * ============================================================================
 */

/* ============================================================================
   BUTTONS
   ============================================================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary {
    background-color: var(--accent-primary);
    color: #fff;
    box-shadow: 0 4px 14px rgba(255, 105, 120, 0.3);
}

.btn-primary:hover {
    background-color: var(--accent-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 105, 120, 0.4);
}

.btn-secondary {
    background-color: transparent;
    color: var(--accent-secondary);
    border: 2px solid var(--accent-secondary);
}

.btn-secondary:hover {
    background-color: var(--accent-secondary);
    color: var(--text-inverse);
    transform: translateY(-2px);
}

.btn-ghost {
    background-color: transparent;
    color: var(--text-primary);
    padding: 0.5rem 1rem;
}

.btn-ghost:hover {
    background-color: var(--highlight-bg);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn svg {
    width: 1.25em;
    height: 1.25em;
}

/* ============================================================================
   NAVIGATION
   ============================================================================ */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 0;
    background-color: var(--bg-overlay);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
}

.nav.scrolled {
    padding: 0.75rem 0;
    box-shadow: 0 4px 20px var(--shadow-color);
}

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

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.nav-brand span {
    color: var(--accent-primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    padding: 0.5rem 0;
    transition: color 0.2s ease;
}

.nav-link:hover {
    color: var(--text-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-primary);
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* Theme Toggle */
.theme-toggle {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    background-color: var(--highlight-bg);
    border-color: var(--accent-primary);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
    color: var(--text-primary);
}

.theme-toggle .icon-sun {
    display: none;
}

[data-theme="light"] .theme-toggle .icon-moon {
    display: none;
}

[data-theme="light"] .theme-toggle .icon-sun {
    display: block;
}

/* Mobile Navigation */
.nav-mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 0.5rem;
    background: transparent;
    border: none;
    cursor: pointer;
}

.nav-mobile-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
}

@media (max-width: 768px) {
    .nav-mobile-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        bottom: 0;
        flex-direction: column;
        background-color: var(--bg-overlay);
        backdrop-filter: blur(10px);
        padding: 2rem;
        gap: 1.5rem;
        transform: translateX(100%);
        transition: transform 0.3s ease;
    }

    .nav-links.open {
        transform: translateX(0);
    }

    .nav-link {
        font-size: 1.25rem;
    }
}

/* ============================================================================
   PROJECT CARDS
   ============================================================================ */

.project-card {
    background-color: var(--bg-secondary);
    border-radius: 16px;
    padding: 1.75rem;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.project-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 16px;
    padding: 2px;
    background: var(--gradient-accent);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.project-card:hover::before {
    opacity: 1;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px var(--shadow-color);
}

.project-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.project-icon {
    font-size: 2.5rem;
    line-height: 1;
}

.project-links {
    display: flex;
    gap: 0.75rem;
}

.project-link {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    background-color: var(--bg-primary);
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.project-link:hover {
    background-color: var(--accent-primary);
    color: #fff;
}

.project-link svg {
    width: 18px;
    height: 18px;
}

.project-card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.project-card-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1rem;
    flex-grow: 1;
}

.project-tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: auto;
}

.tech-tag {
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    background-color: var(--code-bg);
    color: var(--accent-secondary);
    border-radius: 20px;
    font-family: 'JetBrains Mono', monospace;
}

.project-featured-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.25rem 0.75rem;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    background: var(--gradient-accent);
    color: #fff;
    border-radius: 20px;
}

/* ============================================================================
   GITHUB REPO CARDS
   ============================================================================ */

.repo-card {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    padding: 1.25rem;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.repo-card:hover {
    border-color: var(--accent-secondary);
    transform: translateY(-2px);
}

.repo-card-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.repo-card-header svg {
    width: 18px;
    height: 18px;
    color: var(--text-muted);
}

.repo-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent-secondary);
}

.repo-description {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
    flex-grow: 1;
    margin-bottom: 1rem;
}

.repo-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.repo-meta-item {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.repo-meta-item svg {
    width: 14px;
    height: 14px;
}

.repo-language-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--accent-primary);
}