/* ==========================================================================
   Baharak — Blog article
   Loaded only by blog/templates/blog/detail.html via the extra_head block.
   ========================================================================== */

/* ----- Reading progress ----- */

.reading-progress {
    position: fixed;
    inset-inline: 0;
    top: 0;
    z-index: calc(var(--z-header) + 1);
    block-size: 3px;
    background: linear-gradient(to left, var(--color-primary-500), var(--color-secondary-500));
    transform-origin: right;
    scale: 0 1;
}

/* ----- Article header ----- */

.article-page {
    padding-block-end: var(--space-8);
}

.article-header {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    padding-block: var(--space-6) var(--space-7);
    background:
        radial-gradient(38rem 18rem at 85% -30%, var(--color-primary-100) 0%, transparent 65%),
        radial-gradient(30rem 16rem at 10% 130%, var(--color-secondary-50) 0%, transparent 60%),
        linear-gradient(to left, var(--color-primary-50), var(--color-surface));
    border-block-end: 1px solid var(--color-border);
}

.article-header-overlay {
    position: absolute;
    inset: 0;
    z-index: 0;
    background-image: radial-gradient(currentColor 1px, transparent 1.2px);
    background-size: 22px 22px;
    color: var(--color-primary-600);
    opacity: 0.07;
    -webkit-mask-image: linear-gradient(to bottom, #000, transparent 90%);
    mask-image: linear-gradient(to bottom, #000, transparent 90%);
}

.article-cover {
    position: relative;
    z-index: 1;
    width: min(100% - 2.5rem, 56rem);
    margin: 0 auto var(--space-6);
}

.article-cover-img {
    display: block;
    inline-size: 100%;
    aspect-ratio: 16 / 7;
    object-fit: cover;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    background: var(--color-surface);
}

.article-header-content {
    position: relative;
    z-index: 1;
    width: min(100% - 2.5rem, 52rem);
    margin-inline: auto;
    text-align: center;
}

/* ----- Breadcrumb ----- */

.article-breadcrumb {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: var(--space-2);
    margin-block-end: var(--space-4);
    font-size: var(--text-sm);
    color: var(--text-body);
}

.article-breadcrumb a {
    color: var(--text-body);
    text-decoration: none;
}

.article-breadcrumb a:hover {
    color: var(--color-primary-600);
    text-decoration: underline;
}

.breadcrumb-separator {
    color: var(--color-border-strong);
}

/* ----- Title, meta, categories ----- */

.article-title {
    margin-block-end: var(--space-4);
    text-wrap: balance;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-3) var(--space-5);
    margin-block-end: var(--space-4);
    font-size: var(--text-sm);
    color: var(--text-body);
}

.article-meta-item {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
}

.article-meta-item svg {
    color: var(--color-primary-600);
}

.article-categories,
.tags-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-2);
}

.article-category-tag {
    display: inline-flex;
    align-items: center;
    padding: 0.125rem var(--space-3);
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--color-primary-700);
    background: var(--color-surface);
    border: 1px solid var(--color-primary-100);
    border-radius: var(--radius-full);
    transition: background-color 160ms ease, border-color 160ms ease;
}

.article-category-tag:hover {
    background: var(--color-primary-50);
    border-color: var(--color-primary-600);
    color: var(--color-primary-700);
}

/* ----- Article layout ----- */

.article-container {
    display: grid;
    gap: var(--space-6);
    width: min(100% - 2.5rem, var(--container-width));
    margin-inline: auto;
    padding-block-start: var(--space-6);
}

@media (min-width: 64em) {
    .article-container {
        grid-template-columns: 16rem minmax(0, 1fr);
        align-items: start;
    }
}

@media (max-width: 63.99em) {
    .article-container {
        display: flex;
        flex-direction: column-reverse;
        gap: var(--space-7);
    }

    .article-toc {
        display: none;
    }
}

/* ----- Sidebar: table of contents + share ----- */

.article-sidebar {
    display: grid;
    gap: var(--space-4);
}

@media (min-width: 64em) {
    .article-sidebar {
        position: sticky;
        top: calc(var(--header-height) + var(--space-4));
    }
}

.article-toc,
.article-share {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    box-shadow: var(--shadow-sm);
}

.toc-title,
.share-title,
.tags-title {
    margin-block-end: var(--space-3);
    font-size: var(--text-md);
}

.toc-nav {
    display: grid;
    gap: var(--space-1);
    border-inline-start: 2px solid var(--color-border);
    padding-inline-start: var(--space-3);
}

.toc-link {
    display: block;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    font-size: var(--text-sm);
    line-height: 1.7;
    color: var(--text-muted);
    transition: color 160ms ease, background-color 160ms ease;
}

.toc-link:hover {
    color: var(--color-primary-700);
    background: var(--color-primary-50);
}

.toc-link.is-active {
    color: var(--color-primary-700);
    font-weight: 500;
    background: var(--color-primary-50);
}

.toc-link--h3 {
    padding-inline-start: var(--space-4);
    font-size: var(--text-xs);
}

/* ----- Share buttons ----- */

.share-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    inline-size: 2.5rem;
    block-size: 2.5rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    background: var(--color-bg-page);
    color: var(--text-body);
    cursor: pointer;
    transition: background-color 160ms ease, color 160ms ease,
                border-color 160ms ease, transform 160ms ease;
}

.share-btn:hover {
    border-color: var(--color-primary-600);
    background: var(--color-primary-600);
    color: var(--text-inverse);
    transform: translateY(-2px);
}

.share-btn.is-copied {
    border-color: var(--color-success);
    background: var(--color-success);
    color: var(--text-inverse);
}

/* ----- Article body ----- */

.article-main {
    min-inline-size: 0;
}

.article-summary-box {
    padding: var(--space-4) var(--space-5);
    margin-block-end: var(--space-6);
    background: var(--color-primary-50);
    border-inline-start: 4px solid var(--color-primary-600);
    border-radius: var(--radius-md);
    color: var(--text-strong);
    font-size: var(--text-lg);
    line-height: var(--line-height-normal);
}

.article-summary-box p {
    margin: 0;
}

.article-content {
    color: var(--text-body);
    font-size: var(--text-lg);
    line-height: 2;
}

.article-content > :first-child {
    margin-block-start: 0;
}

.article-content h2,
.article-content h3,
.article-content h4 {
    scroll-margin-top: calc(var(--header-height) + var(--space-5));
    margin-block: var(--space-6) var(--space-3);
    color: var(--text-strong);
}

.article-content h2 {
    font-size: var(--text-h2);
    padding-block-end: var(--space-2);
    border-block-end: 2px solid var(--color-primary-100);
}

.article-content h3 {
    font-size: var(--text-h3);
}

.article-content p {
    margin-block-end: var(--space-4);
}

.article-content a {
    color: var(--color-primary-600);
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-thickness: 1px;
    text-decoration-color: var(--color-primary-100);
}

.article-content a:hover {
    color: var(--color-primary-700);
    text-decoration-color: currentColor;
}

.article-content ul,
.article-content ol {
    margin-block: 0 var(--space-4);
    padding-inline-start: var(--space-5);
}

.article-content li {
    margin-block-end: var(--space-2);
}

.article-content li::marker {
    color: var(--color-primary-600);
}

.article-content img {
    display: block;
    margin-inline: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.article-content figure {
    margin: var(--space-6) 0;
    text-align: center;
}

.article-content figcaption {
    margin-block-start: var(--space-2);
    font-size: var(--text-sm);
    color: var(--text-muted);
}

.article-content blockquote {
    margin: var(--space-6) 0;
    padding: var(--space-3) var(--space-5);
    background: var(--color-secondary-50);
    border-inline-start: 4px solid var(--color-secondary-500);
    border-radius: var(--radius-md);
    color: var(--text-strong);
    font-style: normal;
}

.article-content blockquote p:last-child {
    margin-block-end: 0;
}

.article-content pre {
    overflow-x: auto;
    padding: var(--space-4);
    background: var(--text-strong);
    color: #FFFFFF;
    border-radius: var(--radius-md);
    direction: ltr;
    text-align: left;
    font-size: var(--text-sm);
    line-height: 1.7;
}

.article-content code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.9em;
}

.article-content :not(pre) > code {
    padding: 0.125em 0.4em;
    background: var(--color-primary-50);
    color: var(--color-primary-700);
    border-radius: var(--radius-sm);
}

.article-content table {
    inline-size: 100%;
    margin-block: var(--space-6);
    border-collapse: collapse;
    font-size: var(--text-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.article-content th,
.article-content td {
    padding: var(--space-3);
    border: 1px solid var(--color-border);
    text-align: start;
}

.article-content th {
    background: var(--color-primary-50);
    color: var(--color-primary-700);
}

.article-content hr {
    border: 0;
    block-size: 1px;
    margin-block: var(--space-6);
    background: var(--color-border);
}

.article-content figure img,
.article-content iframe,
.article-content video {
    inline-size: 100%;
}

/* ----- Tags ----- */

.article-tags {
    margin-block-start: var(--space-6);
    padding-block-start: var(--space-4);
    border-block-start: 1px solid var(--color-border);
}

.article-tags .tags-list {
    justify-content: flex-start;
}

.article-tag {
    display: inline-flex;
    align-items: center;
    padding: 0.125rem var(--space-3);
    font-size: var(--text-xs);
    color: var(--text-body);
    background: var(--color-bg-section);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    transition: background-color 160ms ease, color 160ms ease;
}

.article-tag:hover {
    background: var(--color-primary-50);
    color: var(--color-primary-700);
}

/* ----- Author box ----- */

.article-author-box {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-block-start: var(--space-6);
    padding: var(--space-4) var(--space-5);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.author-avatar {
    display: grid;
    place-items: center;
    inline-size: 4rem;
    block-size: 4rem;
    flex-shrink: 0;
    background: var(--color-primary-50);
    border: 1px solid var(--color-primary-100);
    border-radius: var(--radius-full);
    color: var(--color-primary-600);
}

.author-name {
    margin-block-end: var(--space-1);
    font-size: var(--text-md);
}

.author-bio {
    margin: 0;
    font-size: var(--text-sm);
    color: var(--text-muted);
}

/* ----- Share feedback toast ----- */

.share-toast {
    position: fixed;
    inset-block-end: var(--space-5);
    left: 50%;
    translate: -50% 0;
    z-index: var(--z-toast);
    padding: var(--space-2) var(--space-5);
    background: var(--text-strong);
    color: var(--text-inverse);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg);
    font-size: var(--text-sm);
    animation: share-toast-in 220ms ease both;
}

@keyframes share-toast-in {
    from { opacity: 0; translate: -50% 12px; }
    to   { opacity: 1; translate: -50% 0; }
}

@media (prefers-reduced-motion: reduce) {
    .share-toast {
        animation: none;
    }
}