/**
 * Zhdanoff.net - Components
 * Reusable UI components
 */

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-8);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-widest);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn:active {
    transform: scale(0.98);
    opacity: 0.9;
}

/* Primary Button */
.btn-primary {
    background-color: var(--color-primary-container);
    color: var(--color-on-primary);
}

.btn-primary:hover {
    box-shadow: var(--shadow-glow-strong);
    filter: brightness(1.1);
}

/* Secondary Button */
.btn-secondary {
    background-color: transparent;
    border: 1px solid var(--color-outline-variant);
    color: var(--color-on-surface);
}

.btn-secondary:hover {
    background-color: var(--color-primary-container);
    color: var(--color-on-primary);
    border-color: var(--color-primary-container);
}

/* Ghost Button */
.btn-ghost {
    background-color: transparent;
    color: var(--color-on-surface);
}

.btn-ghost:hover {
    background-color: var(--color-surface-container);
}

/* Icon Button */
.btn-icon {
    padding: var(--space-2);
    background: transparent;
    color: var(--color-on-surface);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-icon:hover {
    color: var(--color-accent-green);
    background-color: var(--color-surface-container);
}

.btn-icon:active {
    transform: scale(0.95);
    opacity: 0.8;
}

/* Navbar */
.navbar {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-surface-low);
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: var(--max-width-screen);
    margin: 0 auto;
    padding: var(--space-6) var(--container-padding);
}

.navbar-brand {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-accent-green);
    letter-spacing: var(--tracking-tighter);
    text-decoration: none;
}

.navbar-nav {
    display: flex;
    gap: var(--space-8);
}

.navbar-nav a {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-regular);
    text-transform: uppercase;
    letter-spacing: var(--tracking-widest);
    color: var(--color-on-surface);
    text-decoration: none;
    transition: color var(--transition-fast);
    padding-bottom: var(--space-1);
    border-bottom: 2px solid transparent;
}

.navbar-nav a:hover,
.navbar-nav a.active {
    color: var(--color-accent-green);
    border-bottom-color: var(--color-accent-green);
}

.navbar-actions {
    display: flex;
    gap: var(--space-4);
    align-items: center;
}

/* Footer */
.footer {
    background-color: var(--color-background);
    border-top: 1px solid var(--color-outline-variant);
    opacity: 0.15;
}

.footer-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    width: 100%;
    max-width: var(--max-width-screen);
    margin: 0 auto;
    padding: var(--space-12) var(--container-padding);
}

@media (min-width: 768px) {
    .footer-container {
        flex-direction: row;
    }
}

.footer-brand {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-accent-green);
    text-transform: uppercase;
    letter-spacing: var(--tracking-widest);
}

.footer-links {
    display: flex;
    gap: var(--space-8);
}

.footer-links a {
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: var(--tracking-widest);
    color: var(--color-on-surface);
    opacity: 0.5;
    transition: all var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-accent-green);
    opacity: 1;
}

.footer-copyright {
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: var(--tracking-widest);
    color: var(--color-on-surface);
    opacity: 0.5;
}

/* Cards */
.card {
    background-color: var(--color-surface-low);
    padding: var(--space-8);
    transition: background-color var(--transition-fast);
}

.card:hover {
    background-color: var(--color-surface-container);
}

.card-featured {
    border-left: 4px solid var(--color-primary-container);
}

.card-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-4);
    transition: color var(--transition-fast);
}

.card:hover .card-title {
    color: var(--color-primary-container);
}

.card-excerpt {
    color: var(--color-on-surface);
    opacity: 0.7;
    line-height: var(--line-height-relaxed);
}

/* Article Card */
.article-card {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    padding: var(--space-10);
    background-color: var(--color-surface-low);
    border: 1px solid transparent;
    transition: all var(--transition-fast);
}

.article-card:hover {
    background-color: var(--color-surface-container);
    border-color: var(--color-outline-variant);
}

.article-card-category {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wider);
    color: var(--color-primary-fixed-dim);
}

.article-card-date {
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: var(--tracking-widest);
    color: var(--color-on-surface);
    opacity: 0.5;
}

.article-card-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    transition: color var(--transition-fast);
}

.article-card:hover .article-card-title {
    color: var(--color-primary-container);
}

/* Tag */
.tag {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-widest);
    background-color: var(--color-secondary-container);
    color: var(--color-on-secondary-container);
}

.tag-primary {
    background-color: var(--color-primary-container);
    color: var(--color-on-primary);
}

/* Code Block */
.code-block {
    background-color: var(--color-surface-lowest);
    padding: var(--space-6);
    font-family: var(--font-family-mono);
    font-size: var(--font-size-sm);
    color: var(--color-on-surface-variant);
    overflow-x: auto;
    border-left: 2px solid var(--color-outline-variant);
}

.code-block .keyword {
    color: var(--color-primary-container);
}

.code-block .string {
    color: var(--color-tertiary-fixed);
}

.code-block .comment {
    color: var(--color-on-surface);
    opacity: 0.5;
}

/* Terminal Console */
.console {
    background-color: var(--color-surface-lowest);
    padding: var(--space-6);
    font-family: var(--font-family-mono);
    font-size: var(--font-size-sm);
}

.console-prompt {
    color: var(--color-primary-container);
    opacity: 0.5;
}

.console-output {
    color: var(--color-on-surface);
}

.console-label {
    color: var(--color-primary-container);
    font-weight: var(--font-weight-bold);
}

/* Sidebar */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

.sidebar-section h4 {
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: var(--tracking-ultra);
    color: var(--color-primary-fixed-dim);
    margin-bottom: var(--space-4);
}

/* Table of Contents */
.toc {
    position: sticky;
    top: calc(var(--space-12) + var(--space-20));
}

.toc-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.toc-list a {
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: var(--tracking-widest);
    color: var(--color-on-surface);
    opacity: 0.5;
    transition: opacity var(--transition-fast);
}

.toc-list a:hover {
    opacity: 1;
}

/* Mobile Menu Button */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: var(--space-2);
    background: transparent;
    border: none;
    cursor: pointer;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--color-on-surface);
    transition: all var(--transition-fast);
}

@media (max-width: 768px) {
    .navbar-nav {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }
}

/* Status Badge */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-widest);
    background-color: var(--color-surface-container-highest);
    color: var(--color-accent-green);
}

.status-badge::before {
    content: '';
    width: 8px;
    height: 8px;
    background-color: var(--color-accent-green);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* Breadcrumbs */
.breadcrumbs {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-8);
}

.breadcrumbs a {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: var(--tracking-widest);
    color: var(--color-primary-fixed-dim);
}

.breadcrumbs-separator {
    color: var(--color-on-surface);
    opacity: 0.4;
}

.breadcrumbs-line {
    flex: 1;
    height: 1px;
    background-color: var(--color-outline-variant);
    opacity: 0.15;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    margin-top: var(--space-32);
}

.pagination-btn {
    padding: var(--space-5) var(--space-12);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-ultra);
    background-color: var(--color-primary-container);
    color: var(--color-on-primary);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.pagination-btn:hover {
    filter: brightness(1.1);
}

.pagination-btn:active {
    transform: scale(0.98);
}

/* Share Buttons */
.share-buttons {
    display: flex;
    gap: var(--space-4);
}

.share-btn {
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-widest);
    background-color: var(--color-surface-container-highest);
    color: var(--color-on-surface);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.share-btn:hover {
    background-color: var(--color-primary-container);
    color: var(--color-on-primary);
}