/* ============================================================================
   Blog detail — editorial magazine feel.
   Sections: hero (image bg + title), poster figure, article + share rail,
   author card, final CTA, floating admin controls.
   Consumes design-system.css tokens.
   ============================================================================ */

/* ============================================================ HERO ==== */
.post-hero {
    position: relative;
    isolation: isolate;
    color: #fff;
    padding-block: clamp(4rem, 10vw, 7rem) clamp(3rem, 6vw, 4.5rem);
    overflow: hidden;
}
.post-hero__bg {
    position: absolute;
    inset: 0;
    z-index: -1;
    overflow: hidden;
}
.post-hero__bg img {
    width: 100%; height: 100%;
    object-fit: cover;
    transform: scale(1.05);
    filter: blur(8px) saturate(1.05);
    opacity: .6;
}
.post-hero__gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg,
        rgba(11, 18, 32, 0.55) 0%,
        rgba(11, 18, 32, 0.75) 40%,
        rgba(11, 18, 32, 0.95) 100%
    );
}
:root[data-theme="dark"] .post-hero__gradient {
    background: linear-gradient(180deg,
        rgba(11, 18, 32, 0.65) 0%,
        rgba(11, 18, 32, 0.82) 40%,
        rgba(11, 18, 32, 0.97) 100%
    );
}

.post-hero__inner { display: flex; flex-direction: column; gap: 1.25rem; }

.post-hero__crumbs {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    color: rgba(255, 255, 255, .78);
    font-size: .85rem;
    flex-wrap: wrap;
}
.post-hero__crumbs a {
    color: rgba(255, 255, 255, .78);
    text-decoration: none;
    transition: color .2s ease;
}
.post-hero__crumbs a:hover { color: var(--brand); }
.post-hero__crumbs-current { color: #fff; font-weight: 600; }

.post-hero__tags {
    display: flex;
    flex-wrap: wrap;
    gap: .4rem;
}
.post-hero__tag {
    display: inline-flex;
    align-items: center;
    padding: .3rem .85rem;
    background: rgba(255, 255, 255, 0.14);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
    color: #fff;
    text-decoration: none;
    border-radius: var(--radius-pill);
    font-size: .78rem;
    font-weight: 600;
    letter-spacing: .02em;
    transition: background .2s ease, transform .2s ease;
}
.post-hero__tag:hover { background: var(--brand); color: #fff; transform: translateY(-2px); }

.post-hero__title {
    font-size: clamp(1.85rem, 4.5vw, 3.25rem);
    line-height: 1.25;
    font-weight: 800;
    color: #fff;
    margin: 0;
    letter-spacing: -0.01em;
    text-wrap: balance;
    max-width: 22ch;
}

.post-hero__meta {
    display: flex;
    align-items: center;
    gap: .5rem;
    color: rgba(255, 255, 255, .85);
    font-size: .95rem;
    flex-wrap: wrap;
}
.post-hero__meta-item {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
}
.post-hero__meta i { color: var(--brand); font-size: .9em; }
.post-hero__meta-dot { color: rgba(255, 255, 255, .5); }

/* ============================================================ POSTER ==== */
.post-poster {
    margin-top: calc(-1 * clamp(2.5rem, 5vw, 4rem));
    position: relative;
    z-index: 1;
}
.post-poster__wrap {
    margin: 0;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    max-height: 520px;
}
.post-poster__wrap img {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    display: block;
}

/* ============================================================ CONTENT + SHARE ==== */
.post-body { padding-block: clamp(2.5rem, 5vw, 3.5rem); }
.post-body__grid {
    display: grid;
    grid-template-columns: 60px 1fr;
    gap: clamp(1.25rem, 3vw, 2.5rem);
    align-items: start;
}

/* Share rail (sticky vertical column of buttons) */
.post-share {
    position: sticky;
    top: 96px;
    display: flex;
    flex-direction: column;
    gap: .5rem;
    align-items: center;
    padding: .75rem .3rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    box-shadow: var(--shadow-sm);
}
.post-share__label {
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    color: var(--fg-subtle);
    font-size: .72rem;
    letter-spacing: .12em;
    text-transform: uppercase;
    margin-block: .25rem;
    text-align: center;
}
.post-share__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px; height: 40px;
    background: var(--bg-muted);
    color: var(--fg-muted);
    border: 1px solid var(--border);
    border-radius: 50%;
    text-decoration: none;
    cursor: pointer;
    font-size: .95rem;
    transition: background .2s ease, color .2s ease, transform .2s ease;
}
.post-share__btn:hover {
    background: var(--brand);
    color: #fff;
    border-color: transparent;
    transform: translateY(-2px);
}
.post-share__btn.is-copied {
    background: var(--success);
    color: #fff;
    border-color: transparent;
}

/* Prose article */
.post-article {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: clamp(1.75rem, 4vw, 3rem);
    box-shadow: var(--shadow);
    max-width: 780px;
    margin-inline: auto;
}
.post-article__content { font-size: 1.05rem; line-height: 2; color: var(--fg); }

/* Prose typography — resets Django-CKEditor output to our tokens */
.prose h1,
.prose h2,
.prose h3,
.prose h4 {
    color: var(--fg);
    margin: 2rem 0 .75rem 0;
    line-height: 1.35;
    font-weight: 700;
}
.prose h1 { font-size: 1.85rem; }
.prose h2 { font-size: 1.55rem; }
.prose h3 { font-size: 1.3rem; }
.prose h4 { font-size: 1.1rem; }
.prose p  { margin: 0 0 1.15rem 0; color: var(--fg-muted); }
.prose a  { color: var(--brand-strong); text-decoration: underline; text-underline-offset: 3px; }
:root[data-theme="dark"] .prose a { color: var(--brand); }
.prose a:hover { color: var(--accent); }
.prose ul, .prose ol {
    margin: 0 0 1.15rem 1.25rem;
    color: var(--fg-muted);
    padding-inline-start: 1rem;
}
.prose li { margin-bottom: .35rem; }
.prose img {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 1.5rem auto;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.prose figure { margin: 1.5rem 0; }
.prose figure figcaption {
    text-align: center;
    font-size: .82rem;
    color: var(--fg-subtle);
    margin-top: .5rem;
}
.prose blockquote {
    margin: 1.5rem 0;
    padding: 1rem 1.5rem;
    background: var(--bg-muted);
    border-inline-start: 4px solid var(--brand);
    border-radius: var(--radius);
    color: var(--fg);
    font-style: italic;
}
.prose code {
    background: var(--bg-muted);
    color: var(--brand-strong);
    padding: .15em .45em;
    border-radius: 4px;
    font-size: .92em;
    font-family: SFMono-Regular, Consolas, "Liberation Mono", monospace;
    direction: ltr;
    display: inline-block;
}
:root[data-theme="dark"] .prose code { color: var(--brand); }
.prose pre {
    background: var(--bg-muted);
    color: var(--fg);
    padding: 1rem 1.25rem;
    border-radius: var(--radius);
    overflow-x: auto;
    margin: 1.25rem 0;
    direction: ltr;
    font-family: SFMono-Regular, Consolas, "Liberation Mono", monospace;
    font-size: .92em;
    line-height: 1.7;
}
.prose hr {
    border: 0;
    border-top: 1px dashed var(--border-strong);
    margin: 2rem 0;
}
.prose table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: .95rem;
}
.prose th, .prose td {
    border: 1px solid var(--border);
    padding: .55rem .85rem;
    text-align: right;
}
.prose th {
    background: var(--bg-muted);
    color: var(--fg);
    font-weight: 700;
}

/* ============================================================ AUTHOR CARD ==== */
.post-author { padding-block: 1rem clamp(2rem, 5vw, 3rem); }
.post-author__card {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 1.5rem;
    align-items: center;
    padding: 1.75rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    max-width: 900px;
    margin-inline: auto;
}
.post-author__avatar {
    width: 88px; height: 88px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--brand-soft), transparent);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--brand-strong);
    font-size: 2rem;
    box-shadow: var(--shadow);
    flex-shrink: 0;
}
:root[data-theme="dark"] .post-author__avatar { color: var(--brand); }
.post-author__avatar img { width: 100%; height: 100%; object-fit: cover; }
.post-author__eyebrow {
    display: inline-block;
    padding: .2rem .75rem;
    background: var(--brand-soft);
    color: var(--brand-strong);
    border-radius: var(--radius-pill);
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .05em;
    margin-bottom: .35rem;
}
:root[data-theme="dark"] .post-author__eyebrow { color: var(--brand); }
.post-author__name { margin: 0 0 .35rem 0; font-size: 1.2rem; color: var(--fg); }
.post-author__bio { margin: 0 0 .75rem 0; color: var(--fg-muted); line-height: 1.75; font-size: .92rem; }
.post-author__social { display: flex; gap: .4rem; }
.post-author__social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px; height: 34px;
    background: var(--bg-muted);
    color: var(--fg-muted);
    border-radius: 50%;
    text-decoration: none;
    transition: background .2s ease, color .2s ease, transform .2s ease;
}
.post-author__social a:hover {
    background: var(--brand);
    color: #fff;
    transform: translateY(-2px);
}

/* ============================================================ CTA ==== */
.post-cta { padding-block: clamp(2rem, 5vw, 3rem); }
.post-cta__card {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 2rem;
    align-items: center;
    padding: clamp(2rem, 4.5vw, 3rem);
    background:
        radial-gradient(circle at 100% 0%, var(--brand-glow), transparent 55%),
        linear-gradient(135deg, var(--brand) 0%, var(--brand-strong) 100%);
    color: #fff;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    max-width: 1080px;
    margin-inline: auto;
}
.post-cta__card .ds-heading__eyebrow { background: rgba(255,255,255,.18); color: #fff; }
.post-cta__card h2 { color: #fff; margin: .5rem 0 .5rem 0; font-size: clamp(1.4rem, 3vw, 2rem); }
.post-cta__card p { color: rgba(255,255,255,.9); margin: 0; line-height: 1.75; }
.post-cta__actions { display: flex; gap: .75rem; flex-wrap: wrap; justify-content: flex-end; }
.post-cta__actions .ds-btn--primary { background: #fff; color: var(--brand-strong); }
.post-cta__actions .ds-btn--primary:hover { color: var(--brand-strong); }
.post-cta__actions .ds-btn--ghost {
    background: transparent;
    color: #fff;
    border-color: rgba(255,255,255,.5);
}
.post-cta__actions .ds-btn--ghost:hover { background: rgba(255,255,255,.14); color: #fff; }

/* ============================================================ ADMIN CONTROLS (floating) ==== */
.post-admin {
    position: fixed;
    bottom: 1.25rem;
    inset-inline-end: 1.25rem;
    z-index: 100;
    display: flex;
    gap: .4rem;
    padding: .4rem;
    background: var(--glass-bg);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-pill);
    box-shadow: var(--shadow-xl);
}
.post-admin__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px; height: 40px;
    border-radius: 50%;
    background: var(--bg-elevated);
    color: var(--fg);
    border: 1px solid var(--border);
    text-decoration: none;
    cursor: pointer;
    transition: background .2s ease, color .2s ease, transform .2s ease;
}
.post-admin__btn:hover { transform: translateY(-2px); background: var(--brand); color: #fff; border-color: transparent; }
.post-admin__btn--del:hover { background: var(--danger); }

/* ============================================================ RESPONSIVE ==== */
@media (max-width: 1023.98px) {
    .post-body__grid { grid-template-columns: 1fr; }
    .post-share {
        position: static;
        flex-direction: row;
        justify-content: center;
        border-radius: var(--radius-pill);
        padding: .5rem 1rem;
    }
    .post-share__label { writing-mode: horizontal-tb; transform: none; margin: 0 .5rem 0 0; }

    .post-author__card { grid-template-columns: auto 1fr; }
    .post-author__cta { grid-column: 1 / -1; justify-self: stretch; }
    .post-author__cta .ds-btn { width: 100%; justify-content: center; }

    .post-cta__card { grid-template-columns: 1fr; text-align: right; }
    .post-cta__actions { justify-content: flex-start; }
}

@media (max-width: 639.98px) {
    .post-hero__meta { font-size: .85rem; }
    .post-poster__wrap img { aspect-ratio: 3 / 2; }

    .post-author__card { grid-template-columns: 1fr; text-align: center; justify-items: center; }
    .post-author__social { justify-content: center; }

    .post-cta__actions { flex-direction: column; align-items: stretch; }
    .post-cta__actions .ds-btn { width: 100%; justify-content: center; }

    .post-admin { inset-inline-end: .75rem; bottom: .75rem; }
}