/*
 * blog.css — Prompt Architect Blog
 * Public blog pages + admin blog section.
 * Matches the dark aesthetic of builder.css / auth.css exactly.
 */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=Manrope:wght@400;500;600&display=swap');

:root {
  --bg:           #080808;
  --surface:      #0f0f0f;
  --surface-2:    #141414;
  --surface-3:    #1a1a1a;
  --border:       #1f1f1f;
  --border-2:     #2a2a2a;
  --text:         #f0f0f0;
  --text-muted:   #6b7280;
  --text-subtle:  #2d2d2d;
  --accent:       #a78bfa;
  --accent-dim:   rgba(167,139,250,.12);
  --accent-hover: #c4b5fd;
  --error:        #f87171;
  --success:      #4ade80;
  --warning:      #fbbf24;
  --input-bg:     #0c0c0c;
  --radius:       6px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Manrope', sans-serif;
  min-height: 100vh;
  line-height: 1.6;
}

/* ── Blog nav ─────────────────────────────────────────────────────────────── */
.blog-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 52px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 2rem;
  gap: 1.5rem;
}
.blog-nav__brand {
  font-family: 'Syne', sans-serif;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  text-decoration: none;
  white-space: nowrap;
}
.blog-nav__spacer { flex: 1; }
.blog-nav__links {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.blog-nav__link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: .8rem;
  font-weight: 500;
  transition: color .12s;
}
.blog-nav__link:hover { color: var(--accent); }
.blog-nav__link--accent {
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: .3rem .75rem;
  border-radius: var(--radius);
}
.blog-nav__link--accent:hover {
  background: var(--accent-dim);
  color: var(--accent-hover);
}
.blog-nav__username {
  color: var(--text-muted);
  font-size: .8rem;
}

/* ── Blog layout container ────────────────────────────────────────────────── */
.blog-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ── Category filter bar ──────────────────────────────────────────────────── */
.blog-filters {
  padding: 1.5rem 0 .5rem;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  align-items: center;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2.5rem;
}
.blog-filters__label {
  font-size: .7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-muted);
  margin-right: .25rem;
}
.blog-filter-btn {
  background: none;
  border: 1px solid var(--border-2);
  color: var(--text-muted);
  font-family: 'Manrope', sans-serif;
  font-size: .75rem;
  font-weight: 500;
  padding: .3rem .7rem;
  border-radius: 20px;
  cursor: pointer;
  text-decoration: none;
  transition: all .12s;
  display: inline-flex;
  align-items: center;
  gap: .3rem;
}
.blog-filter-btn:hover,
.blog-filter-btn.active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}
.blog-filter-btn__count {
  font-size: .65rem;
  opacity: .7;
}

/* ── Blog hero (featured post) ────────────────────────────────────────────── */
.blog-hero {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 3rem;
  min-height: 420px;
  display: flex;
  align-items: flex-end;
  background: var(--surface-3);
}
.blog-hero__image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .55;
}
.blog-hero__gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(8,8,8,.95) 0%,
    rgba(8,8,8,.6) 50%,
    rgba(8,8,8,.15) 100%
  );
}
.blog-hero__no-image {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #0f0f0f 0%, #1a1a1a 50%, rgba(167,139,250,.08) 100%);
}
.blog-hero__content {
  position: relative;
  z-index: 2;
  padding: 3rem;
  width: 100%;
  max-width: 780px;
}
.blog-hero__badge {
  display: inline-block;
  background: var(--accent-dim);
  border: 1px solid var(--accent);
  color: var(--accent);
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: .2rem .6rem;
  border-radius: 20px;
  margin-bottom: 1rem;
  text-decoration: none;
}
.blog-hero__title {
  font-family: 'Syne', sans-serif;
  font-size: clamp(1.6rem, 4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--text);
  margin-bottom: .75rem;
  text-decoration: none;
  display: block;
}
.blog-hero__title:hover { color: var(--accent-hover); }
.blog-hero__excerpt {
  color: var(--text-muted);
  font-size: .95rem;
  line-height: 1.65;
  margin-bottom: 1.25rem;
  max-width: 620px;
}
.blog-hero__meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: .75rem;
  color: var(--text-muted);
}
.blog-hero__meta-sep { opacity: .3; }

/* ── Post grid ────────────────────────────────────────────────────────────── */
.post-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 3rem;
}
@media (min-width: 640px) {
  .post-grid { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 1024px) {
  .post-grid { grid-template-columns: 1fr 1fr 1fr; }
}

/* ── Post card ────────────────────────────────────────────────────────────── */
.post-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  transition: border-color .15s, transform .15s, box-shadow .15s;
}
.post-card:hover {
  border-color: var(--border-2);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0,0,0,.4);
}
.post-card__image-wrap {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--surface-3);
  position: relative;
}
.post-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s;
}
.post-card:hover .post-card__image { transform: scale(1.03); }
.post-card__image-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--surface-2) 0%, var(--surface-3) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Syne', sans-serif;
  font-size: 2rem;
  color: var(--text-subtle);
}
.post-card__body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: .5rem;
}
.post-card__category {
  display: inline-block;
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--accent);
  text-decoration: none;
}
.post-card__category:hover { color: var(--accent-hover); }
.post-card__title {
  font-family: 'Syne', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
  text-decoration: none;
}
.post-card__title:hover { color: var(--accent-hover); }
.post-card__excerpt {
  font-size: .8rem;
  color: var(--text-muted);
  line-height: 1.55;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.post-card__footer {
  display: flex;
  align-items: center;
  gap: .75rem;
  font-size: .7rem;
  color: var(--text-muted);
  margin-top: auto;
  padding-top: .5rem;
  border-top: 1px solid var(--border);
}
.post-card__read-time { margin-left: auto; }

/* ── Pagination ───────────────────────────────────────────────────────────── */
.blog-pagination {
  display: flex;
  justify-content: center;
  gap: .5rem;
  padding: 2rem 0 3rem;
}
.blog-pagination__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 .75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: .8rem;
  font-family: 'Manrope', sans-serif;
  border-radius: var(--radius);
  text-decoration: none;
  transition: all .12s;
}
.blog-pagination__btn:hover,
.blog-pagination__btn.active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}
.blog-pagination__btn.disabled {
  opacity: .3;
  pointer-events: none;
}

/* ── Empty state ──────────────────────────────────────────────────────────── */
.blog-empty {
  text-align: center;
  padding: 5rem 2rem;
  color: var(--text-muted);
}
.blog-empty__icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  opacity: .3;
}
.blog-empty__title {
  font-family: 'Syne', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: .5rem;
}

/* ── Single post ──────────────────────────────────────────────────────────── */
.post-single {
  max-width: 800px;
  margin: 0 auto;
  padding: 3rem 2rem 5rem;
}
.post-single__hero {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 2.5rem;
  aspect-ratio: 16/7;
  background: var(--surface-3);
}
.post-single__hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .7;
}
.post-single__hero-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(8,8,8,.7) 0%, transparent 60%);
}
.post-single__hero-no-image {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--surface-2) 0%, rgba(167,139,250,.06) 100%);
}
.post-single__back {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  color: var(--text-muted);
  font-size: .8rem;
  text-decoration: none;
  margin-bottom: 1.5rem;
  transition: color .12s;
}
.post-single__back:hover { color: var(--accent); }
.post-single__category {
  display: inline-block;
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--accent);
  text-decoration: none;
  margin-bottom: .75rem;
}
.post-single__title {
  font-family: 'Syne', sans-serif;
  font-size: clamp(1.6rem, 5vw, 2.25rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 1rem;
}
.post-single__meta {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem 1.25rem;
  font-size: .78rem;
  color: var(--text-muted);
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2.5rem;
}
.post-single__meta-sep { opacity: .3; }

/* ── Prose styles (post body) ─────────────────────────────────────────────── */
.post-single__content {
  font-size: .975rem;
  line-height: 1.8;
  color: #d4d4d4;
}
.post-single__content h2 {
  font-family: 'Syne', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  margin: 2.25rem 0 .75rem;
  line-height: 1.25;
}
.post-single__content h3 {
  font-family: 'Syne', sans-serif;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
  margin: 1.75rem 0 .6rem;
}
.post-single__content p {
  margin-bottom: 1.25rem;
}
.post-single__content ul,
.post-single__content ol {
  padding-left: 1.6rem;
  margin-bottom: 1.25rem;
}
.post-single__content li { margin-bottom: .4rem; }
.post-single__content blockquote {
  border-left: 3px solid var(--accent);
  padding: .75rem 1.25rem;
  margin: 1.5rem 0;
  background: var(--accent-dim);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text-muted);
  font-style: italic;
}
.post-single__content code {
  background: var(--surface-3);
  border: 1px solid var(--border);
  color: var(--accent-hover);
  font-family: 'Courier New', monospace;
  font-size: .85em;
  padding: .15em .4em;
  border-radius: 4px;
}
.post-single__content pre {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  overflow-x: auto;
  margin: 1.5rem 0;
}
.post-single__content pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: .85rem;
  color: #d4d4d4;
}
.post-single__content a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: rgba(167,139,250,.4);
}
.post-single__content a:hover { color: var(--accent-hover); }

/* ── Related posts ────────────────────────────────────────────────────────── */
.related-posts {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 2rem 4rem;
  border-top: 1px solid var(--border);
}
.related-posts__title {
  font-family: 'Syne', sans-serif;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}
.related-posts__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
@media (min-width: 640px) {
  .related-posts__grid { grid-template-columns: 1fr 1fr 1fr; }
}

/* ── Blog sidebar ─────────────────────────────────────────────────────────── */
.blog-layout--sidebar {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
@media (min-width: 900px) {
  .blog-layout--sidebar { grid-template-columns: 1fr 280px; }
}
.blog-sidebar {
  position: sticky;
  top: 72px;
  align-self: start;
}
.blog-sidebar__section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}
.blog-sidebar__heading {
  font-family: 'Syne', sans-serif;
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: .875rem;
}
.blog-sidebar__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .375rem;
}
.blog-sidebar__list a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: .82rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: .25rem 0;
  border-bottom: 1px solid var(--border);
  transition: color .12s;
}
.blog-sidebar__list a:hover { color: var(--accent); }
.blog-sidebar__count {
  font-size: .7rem;
  color: var(--text-subtle);
}

/* ── Admin blog styles ────────────────────────────────────────────────────── */
.blog-admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .82rem;
}
.blog-admin-table th {
  text-align: left;
  font-size: .68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--text-muted);
  padding: .6rem .75rem;
  border-bottom: 1px solid var(--border);
}
.blog-admin-table td {
  padding: .6rem .75rem;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  vertical-align: middle;
}
.blog-admin-table tr:last-child td { border-bottom: none; }
.blog-admin-table tr:hover td { background: var(--surface-2); }
.blog-status-badge {
  display: inline-block;
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: .15rem .5rem;
  border-radius: 20px;
}
.blog-status-badge--published {
  background: rgba(74,222,128,.1);
  color: var(--success);
  border: 1px solid rgba(74,222,128,.25);
}
.blog-status-badge--draft {
  background: rgba(107,114,128,.1);
  color: var(--text-muted);
  border: 1px solid var(--border-2);
}
.blog-editor {
  display: flex;
  flex-direction: column;
  gap: .75rem;
}
.blog-editor__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .75rem;
}
.blog-editor__field {
  display: flex;
  flex-direction: column;
  gap: .35rem;
}
.blog-editor__label {
  font-size: .72rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .05em;
}
.blog-editor__input,
.blog-editor__select,
.blog-editor__textarea {
  background: var(--input-bg);
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  color: var(--text);
  font-family: 'Manrope', sans-serif;
  font-size: .83rem;
  padding: .5rem .75rem;
  width: 100%;
  transition: border-color .12s;
}
.blog-editor__input:focus,
.blog-editor__select:focus,
.blog-editor__textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.blog-editor__textarea {
  resize: vertical;
  min-height: 120px;
}
.blog-editor__textarea--large {
  min-height: 280px;
  font-family: 'Courier New', monospace;
  font-size: .8rem;
}
.blog-editor__actions {
  display: flex;
  gap: .5rem;
  justify-content: flex-end;
  padding-top: .5rem;
  border-top: 1px solid var(--border);
}