@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@700;900&display=swap');

/* ══════════════════════════════════════════════════════
   YuSoLAB — Unified Design System
   Primary: #6c5dfb  ·  Accent: rgba(155,140,255,·)
   Matching admin_menus.php visual language
   ══════════════════════════════════════════════════════ */

/* ── CSS Variables ─────────────────────────────────── */
:root {
  /* Brand */
  --primary:       #6c5dfb;
  --primary-soft:  rgba(108,93,251,.09);
  --primary-ring:  rgba(108,93,251,.18);
  --primary-hover: #5a4ce0;
  --accent:        rgba(155,140,255,.35);

  /* Backgrounds */
  --bg-body:  #f5f4ff;
  --bg-1:     #fff1fb;
  --bg-2:     #f7e8ff;
  --bg-3:     #f3e5ff;
  --card:     #ffffff;
  --card-border: rgba(155,140,255,.3);

  /* Text */
  --text: #1a1a2e;
  --sub:  #606080;

  /* Aliases used in legacy selectors */
  --vio:   #9b8cff;
  --pink:  #6c5dfb;
  --pink-2:#b096ff;
  --mint:  #9b8cff;
  --glow:  rgba(108,93,251,.35);
  --ring:  rgba(155,140,255,.35);

  /* Dark mode palette */
  --dark-bg-1: #1a1a2e;
  --dark-bg-2: #16213e;
  --dark-bg-3: #0f3460;
  --dark-card: rgba(42,42,66,.92);
  --dark-card-border: rgba(176,160,255,.2);
  --dark-text: #eaeaf8;
  --dark-sub:  #b0b0c8;
  --dark-vio:  #b096ff;
  --dark-pink: #b096ff;
  --dark-pink-2: #8870e0;
  --dark-glow: rgba(176,160,255,.25);
  --dark-ring: rgba(176,160,255,.25);

  /* Spacing & shape */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;
}

/* ── Reset & Base ───────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { margin: 0; }
body { margin: 0; }

body {
  font-family: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB",
               "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  background:
    radial-gradient(900px 500px at 15% -5%,  rgba(155,140,255,.14), transparent 60%),
    radial-gradient(700px 400px at 88% 5%,   rgba(108,93,251,.08),  transparent 60%),
    radial-gradient(800px 600px at 50% 105%,  rgba(155,140,255,.10), transparent 60%),
    linear-gradient(175deg, #f8f7ff 0%, #f2efff 55%, #ede8ff 100%);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  position: relative;
}

/* Banner background overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: var(--bg-url, none);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  z-index: -1;
  filter: grayscale(0.25) brightness(0.78);
  transition: opacity .4s;
}

/* ── Dark Mode Base ─────────────────────────────────── */
body.dark-mode {
  color: var(--dark-text);
  background:
    radial-gradient(900px 500px at 15% -5%,  rgba(42,36,70,.7), transparent 60%),
    radial-gradient(700px 400px at 88% 5%,   rgba(16,13,40,.8), transparent 60%),
    radial-gradient(800px 600px at 50% 105%,  rgba(15,52,96,.5), transparent 60%),
    linear-gradient(175deg, #121220 0%, #1a1a2e 55%, #16213e 100%);
}

/* ══════════════════════════════════════════════════════
   NAVIGATION
   ══════════════════════════════════════════════════════ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  background: rgba(248,247,255,.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--card-border);
  box-shadow: 0 1px 0 rgba(108,93,251,.06);
  z-index: 1000;
  padding: .65rem 0;
  transition: background .3s, border-color .3s;
}

body.dark-mode .navbar {
  background: rgba(26,26,46,.88);
  border-bottom-color: var(--dark-card-border);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}
.logo-img { height: 38px; width: auto; }

/* Nav menu */
.nav-menu {
  display: flex;
  gap: .25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: .2rem;
  text-decoration: none;
  color: var(--sub);
  font-weight: 600;
  font-size: .88rem;
  padding: .38rem .85rem;
  border-radius: var(--radius-md);
  transition: color .15s, background .15s;
  position: relative;
  white-space: nowrap;
}

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

body.dark-mode .nav-link { color: var(--dark-sub); }
body.dark-mode .nav-link:hover { color: var(--dark-vio); background: rgba(176,160,255,.12); }

/* Dropdown */
.nav-menu li.has-dropdown { position: relative; }

.dropdown-arrow {
  font-size: .6em;
  opacity: .65;
  transition: transform .2s;
  display: inline-block;
}
.nav-menu li.has-dropdown:hover .dropdown-arrow,
.nav-menu li.has-dropdown.open  .dropdown-arrow { transform: rotate(180deg); }

.nav-icon { font-size: 1em; }

.dropdown-menu {
  position: absolute;
  top: 100%;           /* 紧贴父级底部，无缝隙 */
  left: 0;
  min-width: 160px;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 24px rgba(108,93,251,.14);
  list-style: none;
  margin: 0;
  padding: .5rem 0 .35rem; /* 顶部 padding 替代 gap，鼠标不会脱离 li */
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-6px);
  transition: opacity .15s, transform .15s;
}
.nav-menu li.has-dropdown:hover .dropdown-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.dropdown-menu li { width: 100%; }
.dropdown-menu .nav-link {
  display: block;
  padding: .45rem 1rem;
  font-size: .875rem;
  border-radius: 0;
  color: var(--text);
}
.dropdown-menu .nav-link:hover { background: var(--primary-soft); color: var(--primary); }

body.dark-mode .dropdown-menu {
  background: #232338;
  border-color: var(--dark-card-border);
  box-shadow: 0 8px 28px rgba(0,0,0,.38);
}
body.dark-mode .dropdown-menu .nav-link { color: var(--dark-text); }
body.dark-mode .dropdown-menu .nav-link:hover { background: rgba(176,160,255,.12); color: var(--dark-vio); }

/* Nav right */
.nav-right {
  display: flex !important;
  align-items: center !important;
  gap: .6rem !important;
  flex-shrink: 0;
}

/* Theme toggle */
.theme-toggle {
  background: var(--primary-soft);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  padding: .38rem .55rem;
  font-size: 1rem;
  color: var(--primary);
  line-height: 1;
  transition: background .15s, transform .2s;
}
.theme-toggle:hover { background: rgba(108,93,251,.16); transform: rotate(20deg); }

body.dark-mode .theme-toggle {
  background: rgba(176,160,255,.1);
  border-color: var(--dark-card-border);
  color: var(--dark-vio);
}

/* User auth */
.user-auth {
  display: flex;
  align-items: center;
  gap: .4rem;
}
.user-welcome {
  font-size: .82rem;
  color: var(--sub);
  font-weight: 500;
}
body.dark-mode .user-welcome { color: var(--dark-sub); }

/* Mobile toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: .45rem;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  background: var(--primary-soft);
}
.nav-toggle span {
  width: 20px; height: 2px;
  background: var(--primary);
  margin: 2.5px 0;
  border-radius: 2px;
  transition: .25s;
  display: block;
}
body.dark-mode .nav-toggle {
  background: rgba(176,160,255,.1);
  border-color: var(--dark-card-border);
}
body.dark-mode .nav-toggle span { background: var(--dark-vio); }

/* ══════════════════════════════════════════════════════
   BUTTONS
   ══════════════════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .55rem 1.25rem;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: .9rem;
  cursor: pointer;
  text-decoration: none;
  border: none;
  transition: filter .15s, transform .1s, box-shadow .15s;
  white-space: nowrap;
}
.btn:hover { filter: brightness(.92); transform: translateY(-1px); }
.btn:active { transform: translateY(0); filter: brightness(.86); }

.btn.primary, .btn-primary {
  background: linear-gradient(135deg, #7c6dfb, var(--primary));
  color: #fff;
  box-shadow: 0 3px 12px rgba(108,93,251,.3);
}

.btn.secondary, .btn-secondary {
  background: var(--primary-soft);
  color: var(--primary);
  border: 1px solid rgba(108,93,251,.25);
}

body.dark-mode .btn.secondary,
body.dark-mode .btn-secondary {
  background: rgba(176,160,255,.1);
  color: var(--dark-vio);
  border-color: rgba(176,160,255,.25);
}

.btn-small, .btn-sm {
  padding: .28rem .72rem;
  font-size: .78rem;
  border-radius: var(--radius-sm);
}

.btn-login {
  background: var(--primary-soft);
  color: var(--primary);
  border: 1px solid rgba(108,93,251,.25);
}
.btn-register {
  background: linear-gradient(135deg, #7c6dfb, var(--primary));
  color: #fff;
  box-shadow: 0 2px 8px rgba(108,93,251,.25);
}

body.dark-mode .btn-login {
  background: rgba(176,160,255,.1);
  color: var(--dark-vio);
  border-color: rgba(176,160,255,.22);
}

/* ══════════════════════════════════════════════════════
   PAGE LAYOUT
   ══════════════════════════════════════════════════════ */
.wrap {
  flex-grow: 1;
  width: 100%;
  box-sizing: border-box;
  margin-top: 76px;
  padding: 2rem 2rem 2rem;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 2rem;
  align-items: start;
}

.main-content { padding: 0; }
.sidebar      { padding: 0; }


/* ══════════════════════════════════════════════════════
   BLOG HEADER  (index page top)
   ══════════════════════════════════════════════════════ */
.blog-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  font-size: .73rem;
  font-weight: 700;
  letter-spacing: .04em;
  background: var(--primary-soft);
  color: var(--primary);
  border: 1px solid rgba(108,93,251,.22);
  padding: .22rem .75rem;
  border-radius: 20px;
  margin-bottom: .45rem;
}
body.dark-mode .badge { background: rgba(176,160,255,.1); color: var(--dark-vio); border-color: rgba(176,160,255,.2); }

.title {
  font-size: clamp(1.4rem, 3.5vw, 2rem);
  font-weight: 800;
  margin: 0;
  letter-spacing: -.02em;
  color: var(--text);
  line-height: 1.25;
}
body.dark-mode .title { color: var(--dark-text); }

/* Search box (matches admin input style) */
.search-box {
  display: flex;
  gap: .45rem;
  align-items: center;
}
.search-box input {
  padding: .48rem .85rem;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  font-size: .88rem;
  background: var(--card);
  color: var(--text);
  min-width: 200px;
  transition: border-color .15s, box-shadow .15s;
}
.search-box input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-ring);
}
.search-box input::placeholder { color: #aaa; }
body.dark-mode .search-box input {
  background: rgba(42,42,66,.7);
  border-color: var(--dark-card-border);
  color: var(--dark-text);
}
body.dark-mode .search-box input:focus {
  border-color: var(--dark-vio);
  box-shadow: 0 0 0 3px rgba(176,160,255,.14);
}

.lead {
  font-size: .9rem;
  color: var(--sub);
  margin: 0 0 1.25rem;
  line-height: 1.65;
}
body.dark-mode .lead { color: var(--dark-sub); }

/* ══════════════════════════════════════════════════════
   ARTICLE CARDS  — card-per-article, thumbnail-ready
   ══════════════════════════════════════════════════════ */
.articles-grid {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.article-card {
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  box-shadow: 0 2px 10px rgba(108,93,251,.05);
  overflow: hidden;
  position: relative;
  transition: transform .2s cubic-bezier(.22,1,.36,1),
              box-shadow .2s ease,
              border-color .2s ease;
}
.article-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(108,93,251,.14), 0 2px 8px rgba(108,93,251,.06);
  border-color: rgba(108,93,251,.38);
}
.article-card:hover .article-title { color: var(--primary); }

/* Accent bar on left edge */
.article-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--primary), rgba(155,140,255,.4));
  opacity: 0;
  transition: opacity .2s;
  border-radius: 3px 0 0 3px;
}
.article-card:hover::before { opacity: 1; }

/* Inner: thumbnail | content | arrow */
.article-card-inner {
  display: flex;
  align-items: stretch;
}

/* ── Thumbnail ─────────────────────────────────────── */
.article-thumb {
  width: 180px;
  flex-shrink: 0;
  background:
    linear-gradient(135deg, rgba(108,93,251,.1) 0%, rgba(155,140,255,.18) 100%);
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 152px;
  border-right: 1px solid var(--card-border);
}
.article-thumb img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .35s ease;
}
.article-card:hover .article-thumb img { transform: scale(1.07); }

/* Placeholder pattern when no image */
.article-thumb-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .4rem;
  opacity: .28;
  user-select: none;
}
.article-thumb-placeholder span { font-size: 2.2rem; }
.article-thumb-placeholder em {
  font-size: .6rem;
  font-style: normal;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--primary);
}

/* ── Content ───────────────────────────────────────── */
.article-card-body {
  flex: 1;
  min-width: 0;
  padding: 1.25rem 1.4rem 1.15rem;
  display: flex;
  flex-direction: column;
  gap: .55rem;
}

.article-title {
  font-size: 1.05rem;
  font-weight: 800;
  margin: 0;
  color: var(--text);
  transition: color .16s;
  line-height: 1.45;
  letter-spacing: -.015em;
  /* clamp to 2 lines */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
body.dark-mode .article-title { color: var(--dark-text); }

.article-excerpt {
  font-size: .85rem;
  color: var(--sub);
  margin: 0;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}
body.dark-mode .article-excerpt { color: var(--dark-sub); }

/* Bottom row: meta + tags */
.article-footer-row {
  display: flex;
  align-items: center;
  gap: .6rem;
  flex-wrap: wrap;
  margin-top: auto;
  padding-top: .5rem;
  border-top: 1px solid rgba(155,140,255,.1);
}
body.dark-mode .article-footer-row { border-top-color: rgba(176,160,255,.1); }

.article-meta {
  display: flex;
  gap: .75rem;
  font-size: .72rem;
  color: var(--sub);
  flex-wrap: wrap;
  align-items: center;
}
body.dark-mode .article-meta { color: var(--dark-sub); }

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .3rem;
  margin-left: auto;
}

.tag {
  font-size: .68rem;
  font-weight: 700;
  background: var(--primary-soft);
  color: var(--primary);
  border: 1px solid rgba(108,93,251,.16);
  padding: .14rem .58rem;
  border-radius: 20px;
  transition: background .14s, border-color .14s;
  white-space: nowrap;
}
.article-card:hover .tag {
  background: rgba(108,93,251,.13);
  border-color: rgba(108,93,251,.28);
}
body.dark-mode .tag {
  background: rgba(176,160,255,.1);
  color: var(--dark-vio);
  border-color: rgba(176,160,255,.18);
}

/* ── Read-more arrow ── */
.article-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  flex-shrink: 0;
  font-size: 1rem;
  color: rgba(155,140,255,.35);
  transition: color .16s, transform .16s;
  align-self: center;
  margin-right: .25rem;
}
.article-card:hover .article-arrow {
  color: var(--primary);
  transform: translateX(4px);
}
body.dark-mode .article-arrow { color: rgba(176,160,255,.25); }
body.dark-mode .article-card:hover .article-arrow { color: var(--dark-vio); }

/* Dark mode card */
body.dark-mode .article-card {
  background: var(--dark-card);
  border-color: var(--dark-card-border);
}
body.dark-mode .article-card:hover { border-color: rgba(176,160,255,.38); }
body.dark-mode .article-card:hover .article-title { color: var(--dark-vio); }
body.dark-mode .article-thumb {
  background: linear-gradient(135deg, rgba(176,160,255,.08), rgba(108,93,251,.12));
  border-right-color: var(--dark-card-border);
}

/* Empty state */
.articles-empty {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  text-align: center;
  color: var(--sub);
  font-size: .9rem;
}
body.dark-mode .articles-empty {
  background: var(--dark-card);
  border-color: var(--dark-card-border);
  color: var(--dark-sub);
}

/* ── Tag cloud (sidebar) ─────────────────────────────── */
.tag-cloud-item {
  text-decoration: none;
  display: inline-block;
  padding: .3rem .7rem;
  border-radius: 20px;
  transition: filter .15s, transform .15s;
}
.tag-cloud-item:hover { filter: brightness(1.12); transform: scale(1.06); }

/* ══════════════════════════════════════════════════════
   SIDEBAR
   ══════════════════════════════════════════════════════ */
.sidebar {
  position: sticky;
  top: 90px;
}
.sidebar h3 {
  font-size: .82rem;
  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--sub);
  margin: 0 0 .85rem;
  padding: 0 0 .5rem;
  border-bottom: 1px solid var(--card-border);
}
body.dark-mode .sidebar h3 {
  color: var(--dark-sub);
  border-bottom-color: var(--dark-card-border);
}
.sidebar > h3:not(:first-child) { margin-top: 1.75rem; }

/* ── Sidebar widgets (card style) ── */
.sidebar-widget {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 1rem 1.1rem;
  margin-bottom: 1rem;
  box-shadow: 0 2px 10px rgba(108,93,251,.05);
}
body.dark-mode .sidebar-widget {
  background: var(--dark-card);
  border-color: var(--dark-card-border);
}

/* ══════════════════════════════════════════════════════
   PAGINATION  (matches admin btn style)
   ══════════════════════════════════════════════════════ */
.pagination {
  display: flex;
  gap: .35rem;
  justify-content: center;
  margin: 1.5rem 0 .75rem;
  flex-wrap: wrap;
}
.pagination a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 .6rem;
  border-radius: var(--radius-md);
  font-size: .82rem;
  font-weight: 700;
  text-decoration: none;
  background: var(--card);
  border: 1px solid var(--card-border);
  color: var(--sub);
  transition: background .14s, color .14s, border-color .14s;
}
.pagination a:hover {
  background: var(--primary-soft);
  color: var(--primary);
  border-color: rgba(108,93,251,.28);
}
.pagination a.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 2px 8px rgba(108,93,251,.3);
}
body.dark-mode .pagination a {
  background: rgba(42,42,66,.6);
  border-color: var(--dark-card-border);
  color: var(--dark-sub);
}
body.dark-mode .pagination a:hover { background: rgba(176,160,255,.12); color: var(--dark-vio); }
body.dark-mode .pagination a.active { background: var(--primary); color: #fff; }

/* ══════════════════════════════════════════════════════
   FOOTER
   ══════════════════════════════════════════════════════ */
.footer {
  text-align: center;
  font-size: .78rem;
  color: var(--sub);
  padding: .75rem 0 0;
  border-top: 1px solid var(--card-border);
  margin-top: 1rem;
}
body.dark-mode .footer {
  color: var(--dark-sub);
  border-top-color: var(--dark-card-border);
}

.custom-footer {
  background: rgba(255,255,255,.65);
  backdrop-filter: blur(8px);
  border-top: 1px solid var(--card-border);
  padding: 1.5rem 2rem;
  text-align: center;
  font-size: .82rem;
  color: var(--sub);
  margin-top: 2rem;
}
.custom-footer a { color: var(--primary); text-decoration: none; }
.custom-footer a:hover { text-decoration: underline; }

body.dark-mode .custom-footer {
  background: rgba(26,26,46,.65);
  border-top-color: var(--dark-card-border);
  color: var(--dark-sub);
}
body.dark-mode .custom-footer a { color: var(--dark-vio); }

/* ══════════════════════════════════════════════════════
   ARTICLE PAGE
   ══════════════════════════════════════════════════════ */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  font-size: .83rem;
  font-weight: 600;
  color: var(--sub);
  text-decoration: none;
  margin-bottom: 1rem;
  padding: .3rem .7rem;
  border-radius: var(--radius-md);
  transition: color .14s, background .14s;
}
.back-link:hover { color: var(--primary); background: var(--primary-soft); }
body.dark-mode .back-link { color: var(--dark-sub); }
body.dark-mode .back-link:hover { color: var(--dark-vio); background: rgba(176,160,255,.1); }

/* Article content container (like admin .mbuilder) */
.article-content {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: 2rem 2.25rem;
  box-shadow: 0 4px 24px rgba(108,93,251,.07);
  line-height: 1.85;
  font-size: .95rem;
  color: var(--text);
  overflow-wrap: break-word;
  word-break: break-word;
  hyphens: auto;
  max-width: 100%;
  margin-bottom: 1.5rem;
}
body.dark-mode .article-content {
  background: var(--dark-card);
  border-color: var(--dark-card-border);
  color: var(--dark-text);
}

.article-content h1,
.article-content h2,
.article-content h3,
.article-content h4 {
  color: var(--text);
  font-weight: 800;
  margin-top: 1.75rem;
  margin-bottom: .6rem;
  letter-spacing: -.015em;
}
body.dark-mode .article-content h1,
body.dark-mode .article-content h2,
body.dark-mode .article-content h3,
body.dark-mode .article-content h4 { color: var(--dark-text); }

.article-content h2 { font-size: 1.25rem; border-bottom: 2px solid var(--primary-soft); padding-bottom: .4rem; }
.article-content h3 { font-size: 1.1rem; }

.article-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 2px; }
body.dark-mode .article-content a { color: var(--dark-vio); }

.article-content blockquote {
  border-left: 3px solid var(--primary);
  background: var(--primary-soft);
  padding: .75rem 1.1rem;
  margin: 1rem 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--sub);
  font-style: italic;
}
body.dark-mode .article-content blockquote {
  background: rgba(176,160,255,.06);
  color: var(--dark-sub);
}

.article-content img,
.article-content video,
.article-content table,
.article-content iframe { max-width: 100% !important; }

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: .88rem;
}
.article-content th,
.article-content td {
  border: 1px solid var(--card-border);
  padding: .5rem .8rem;
  text-align: left;
}
.article-content th {
  background: var(--primary-soft);
  font-weight: 700;
  color: var(--primary);
}
body.dark-mode .article-content th { background: rgba(176,160,255,.07); color: var(--dark-vio); }

.article-content p { margin: 0 0 1rem; }
.article-content ul,
.article-content ol { padding-left: 1.5rem; margin-bottom: 1rem; }
.article-content li { margin-bottom: .3rem; }

/* ── Code blocks ────────────────────────────────────── */
.code-block {
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: 1rem 0;
  background: #1e1e2e;
}
.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .5rem 1rem;
  background: rgba(108,93,251,.12);
  border-bottom: 1px solid rgba(108,93,251,.18);
  font-size: .78rem;
  font-weight: 700;
  color: #b096ff;
  letter-spacing: .04em;
}
.code-container { overflow-x: auto; }
.code-block pre { margin: 0; padding: 1rem 1.1rem; }
.code-block code { font-size: .82rem; line-height: 1.6; }
pre code { white-space: pre; word-break: normal; overflow-wrap: normal; }

.copy-btn {
  background: rgba(108,93,251,.2);
  color: #b096ff;
  border: none;
  border-radius: var(--radius-sm);
  padding: .18rem .55rem;
  font-size: .72rem;
  font-weight: 700;
  cursor: pointer;
  transition: background .14s;
}
.copy-btn:hover   { background: rgba(108,93,251,.35); }
.copy-btn.copied  { background: rgba(39,174,96,.25); color: #6fcf97; }

/* Inline code */
.article-content code:not(.hljs) {
  background: var(--primary-soft);
  color: var(--primary);
  padding: .1em .4em;
  border-radius: 4px;
  font-size: .85em;
}
body.dark-mode .article-content code:not(.hljs) {
  background: rgba(176,160,255,.1);
  color: var(--dark-vio);
}

/* ── Article actions ──── */
.actions {
  display: flex;
  gap: .6rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

/* ── Note / info box ───── */
.note {
  background: rgba(255,196,9,.12);
  color: #7a5900;
  border: 1px solid rgba(255,196,9,.4);
  border-radius: var(--radius-md);
  padding: .75rem 1rem;
  font-size: .875rem;
  margin: .75rem 0;
}
body.dark-mode .note {
  background: rgba(255,196,9,.08);
  color: #f2c94c;
  border-color: rgba(255,196,9,.25);
}

/* ── Messages ───────────── */
.message, .comment-message {
  padding: .65rem 1rem;
  border-radius: var(--radius-md);
  font-size: .875rem;
  margin-bottom: 1rem;
  border: 1px solid transparent;
}
.message.success {
  background: rgba(39,174,96,.1);
  color: #1a7a40;
  border-color: rgba(39,174,96,.25);
}
body.dark-mode .message.success {
  background: rgba(39,174,96,.08);
  color: #6fcf97;
}

/* ══════════════════════════════════════════════════════
   COMMENTS SECTION  (matches admin card style)
   ══════════════════════════════════════════════════════ */
.comments-section {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: 1.5rem 1.75rem;
  box-shadow: 0 3px 16px rgba(108,93,251,.06);
  margin-top: 1.5rem;
}
body.dark-mode .comments-section {
  background: var(--dark-card);
  border-color: var(--dark-card-border);
}

.comments-section h3 {
  font-size: 1rem;
  font-weight: 800;
  color: var(--primary);
  margin: 0 0 1.25rem;
  padding-bottom: .65rem;
  border-bottom: 1px solid var(--card-border);
}
body.dark-mode .comments-section h3 { color: var(--dark-vio); border-bottom-color: var(--dark-card-border); }

/* Comment list */
.comment-list { display: flex; flex-direction: column; gap: .75rem; margin-bottom: 1.5rem; }

.comment-item {
  display: flex;
  gap: .85rem;
  padding: .85rem 1rem;
  background: rgba(155,140,255,.04);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  transition: background .14s;
}
.comment-item:hover { background: var(--primary-soft); }

body.dark-mode .comment-item {
  background: rgba(176,160,255,.04);
  border-color: var(--dark-card-border);
}
body.dark-mode .comment-item:hover { background: rgba(176,160,255,.07); }

.comment-avatar {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, #9b8cff, var(--primary));
  display: flex; align-items: center; justify-content: center;
  font-size: .95rem; font-weight: 700; color: #fff;
  flex-shrink: 0;
}
.comment-body { flex: 1; min-width: 0; }
.comment-header {
  display: flex; align-items: center; gap: .6rem;
  margin-bottom: .3rem; flex-wrap: wrap;
}
.comment-author {
  font-size: .85rem; font-weight: 700;
  color: var(--primary);
}
body.dark-mode .comment-author { color: var(--dark-vio); }

.comment-date {
  font-size: .73rem; color: var(--sub);
}
body.dark-mode .comment-date { color: var(--dark-sub); }

.comment-text {
  font-size: .875rem; color: var(--text);
  line-height: 1.65;
}
body.dark-mode .comment-text { color: var(--dark-text); }

.reply-link {
  font-size: .73rem; font-weight: 700;
  color: var(--sub);
  cursor: pointer;
  background: none; border: none;
  padding: .15rem .45rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: color .14s, background .14s;
}
.reply-link:hover {
  color: var(--primary);
  background: var(--primary-soft);
}
body.dark-mode .reply-link:hover { color: var(--dark-vio); background: rgba(176,160,255,.1); }

/* Nested replies */
.comment-replies { margin-top: .75rem; padding-left: 1.25rem; display: flex; flex-direction: column; gap: .5rem; }
.comment-item.reply-item {
  background: rgba(108,93,251,.04);
  border-left: 2px solid rgba(108,93,251,.2);
}
body.dark-mode .comment-item.reply-item {
  background: rgba(176,160,255,.03);
  border-left-color: rgba(176,160,255,.2);
}

/* Comment form (matches admin .mfg style) */
.comment-form { margin-top: 1.25rem; }
.comment-form h4 {
  font-size: .9rem; font-weight: 800;
  color: var(--sub); margin: 0 0 1rem;
  text-transform: uppercase; letter-spacing: .06em;
}
body.dark-mode .comment-form h4 { color: var(--dark-sub); }

.form-group {
  display: flex; flex-direction: column;
  gap: .28rem; margin-bottom: .85rem;
}
.form-group label {
  font-size: .82rem; font-weight: 700;
  color: var(--sub);
}
body.dark-mode .form-group label { color: var(--dark-sub); }

.comment-form input[type="text"],
.comment-form input[type="email"],
.comment-form textarea {
  padding: .48rem .78rem;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  font-size: .88rem;
  background: var(--card);
  color: var(--text);
  transition: border-color .15s, box-shadow .15s;
  width: 100%;
  font-family: inherit;
}
.comment-form textarea { resize: vertical; min-height: 100px; }

.comment-form input:focus,
.comment-form textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-ring);
}

body.dark-mode .comment-form input[type="text"],
body.dark-mode .comment-form input[type="email"],
body.dark-mode .comment-form textarea {
  background: rgba(42,42,66,.65);
  border-color: var(--dark-card-border);
  color: var(--dark-text);
}
body.dark-mode .comment-form input:focus,
body.dark-mode .comment-form textarea:focus {
  border-color: var(--dark-vio);
  box-shadow: 0 0 0 3px rgba(176,160,255,.14);
}

.comment-login-prompt {
  background: var(--primary-soft);
  border: 1px solid rgba(108,93,251,.18);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
  text-align: center;
}
.comment-login-prompt p { color: var(--sub); margin: 0; font-size: .88rem; }
body.dark-mode .comment-login-prompt { background: rgba(176,160,255,.07); border-color: rgba(176,160,255,.18); }
body.dark-mode .comment-login-prompt p { color: var(--dark-sub); }

/* ══════════════════════════════════════════════════════
   ANNOUNCEMENT OVERLAY
   ══════════════════════════════════════════════════════ */
#announcement-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.52);
  z-index: 1000;
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(4px);
  opacity: 0; transition: opacity .3s;
}
#announcement-overlay.active { opacity: 1; }
#announcement-modal {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  max-width: 80%; width: 600px;
  max-height: 80vh; overflow-y: auto;
  padding: 1.75rem;
  box-shadow: 0 20px 60px rgba(108,93,251,.2);
  animation: mmIn .18s ease;
}
@keyframes mmIn { from { opacity: 0; transform: scale(.95) translateY(10px); } }

body.dark-mode #announcement-modal {
  background: #232338;
  border-color: var(--dark-card-border);
}

/* ══════════════════════════════════════════════════════
   MAINTENANCE / ERROR BOXES
   ══════════════════════════════════════════════════════ */
.maintenance-box {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  max-width: 560px;
  margin: 2rem auto;
  text-align: center;
  box-shadow: 0 12px 36px rgba(108,93,251,.1);
}
body.dark-mode .maintenance-box {
  background: #232338;
  border-color: var(--dark-card-border);
  box-shadow: 0 12px 36px rgba(0,0,0,.4);
}

/* ══════════════════════════════════════════════════════
   MOBILE  — nav drawer
   ══════════════════════════════════════════════════════ */
@media (max-width: 768px) {
  .nav-toggle { display: flex; }

  .nav-menu {
    display: none;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: rgba(248,247,255,.97);
    backdrop-filter: blur(14px);
    border-top: 1px solid var(--card-border);
    flex-direction: column;
    gap: 0;
    padding: .5rem 1rem 1rem;
    z-index: 999;
    box-shadow: 0 8px 24px rgba(108,93,251,.1);
  }
  body.dark-mode .nav-menu {
    background: rgba(26,26,46,.97);
    border-top-color: var(--dark-card-border);
  }
  .nav-menu.active { display: flex; }

  .nav-link {
    padding: .55rem .75rem;
    width: 100%;
    border-radius: var(--radius-md);
  }

  .dropdown-menu {
    position: static;
    opacity: 1 !important;
    pointer-events: auto !important;
    transform: none !important;
    box-shadow: none;
    border: none;
    border-radius: 0;
    background: transparent;
    padding: 0;
    display: none;
  }
  .nav-menu li.has-dropdown.open .dropdown-menu { display: block; }
  .dropdown-menu .nav-link { padding-left: 1.75rem; font-size: .85rem; }

  body.dark-mode .dropdown-menu { background: transparent; }

  .wrap {
    grid-template-columns: 1fr;
    padding: 1rem 1rem 1.5rem;
    margin-top: 72px;
  }

  .sidebar { position: static; }

  .blog-header { flex-direction: column; gap: .75rem; }
  .search-box input { min-width: 0; width: 100%; }
  .search-box { width: 100%; }
}

/* ── 600px: shrink thumbnail slightly ── */
@media (max-width: 600px) {
  .article-thumb { width: 120px; min-height: 120px; }
  .article-card-body { padding: 1rem 1rem .9rem; }
}

/* ── 480px: flip to vertical (thumb on top) ── */
@media (max-width: 480px) {
  .article-card-inner { flex-direction: column; }
  .article-thumb {
    width: 100%;
    min-height: 120px;
    border-right: none;
    border-bottom: 1px solid var(--card-border);
  }
  body.dark-mode .article-thumb { border-bottom-color: var(--dark-card-border); }
  .article-arrow { display: none; }
  .articles-grid { gap: .85rem; }
}

/* ── 550px tweaks ── */
@media (max-width: 550px) {
  .wrap { padding: .75rem .75rem 1.25rem; margin-top: 68px; }

  /* Card: stack thumb on top */
  .article-card-inner { flex-direction: column; }
  .article-thumb {
    width: 100%;
    min-height: 130px;
    border-radius: 0;
  }
  .article-card-body { padding: .9rem 1rem .85rem; }
  .article-footer-row { flex-direction: column; align-items: flex-start; gap: .4rem; }

  .article-content { padding: 1.1rem 1.1rem; border-radius: var(--radius-lg); }
  .article-meta { flex-wrap: wrap; gap: .4rem .65rem; font-size: .72rem; }
  .actions { flex-direction: column; gap: .5rem; }
  .actions .btn { width: 100%; justify-content: center; }
  .title { font-size: clamp(1.15rem, 5.5vw, 1.5rem) !important; }
  .badge { font-size: .68rem; padding: .18rem .6rem; }
  .tag { font-size: .67rem; padding: .08rem .45rem; }
  .back-link { font-size: .78rem; }
  .comments-section { padding: 1rem 1rem; }
  .comment-item { padding: .7rem .85rem; }
  .comment-avatar { width: 32px; height: 32px; font-size: .8rem; }
  .code-block, .article-content pre { overflow-x: auto; max-width: 100%; }
  .blog-header { gap: .5rem; margin-bottom: 1rem; }
}

/* ── 480px tweaks ── */
@media (max-width: 480px) {
  .nav-container { padding: 0 .85rem; gap: .35rem; }
  .nav-right { gap: .3rem !important; }
  .theme-toggle { width: 34px; height: 34px; padding: .35rem; font-size: .9rem; }
  .btn-small, .btn-sm { padding: .22rem .52rem; font-size: .72rem; }
  .user-welcome { display: none; }
}
@media (max-width: 380px) {
  .btn-register { display: none; }
  .btn-small, .btn-sm { padding: .2rem .45rem; font-size: .7rem; }
}

/* ══════════════════════════════════════════════════════
   DARK MODE — misc overrides
   ══════════════════════════════════════════════════════ */
body.dark-mode .footer {
  color: var(--dark-sub);
  border-top-color: var(--dark-card-border);
}

/* ── Scrollbar (WebKit) ── */
::-webkit-scrollbar { width: 7px; height: 7px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: rgba(108,93,251,.25);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover { background: rgba(108,93,251,.45); }

/* ══════════════════════════════════════════════════════
   AUTH PAGES — login / register / forgot / reset
   ══════════════════════════════════════════════════════ */

/* ── Container ─────────────────────────────────────── */
.auth-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.25rem;
  position: relative;
  z-index: 1;
}

/* Decorative floating orbs behind the card */
.auth-container::before,
.auth-container::after {
  content: '';
  position: fixed;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  filter: blur(80px);
}
.auth-container::before {
  width: 520px; height: 520px;
  top: -120px; left: -100px;
  background: radial-gradient(circle, rgba(108,93,251,.22), rgba(155,140,255,.10) 60%, transparent 80%);
  animation: auth-orb-a 9s ease-in-out infinite alternate;
}
.auth-container::after {
  width: 400px; height: 400px;
  bottom: -100px; right: -80px;
  background: radial-gradient(circle, rgba(176,100,255,.18), rgba(108,93,251,.08) 60%, transparent 80%);
  animation: auth-orb-b 11s ease-in-out infinite alternate;
}

@keyframes auth-orb-a {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(40px, 30px) scale(1.12); }
}
@keyframes auth-orb-b {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(-30px, -40px) scale(1.08); }
}

/* ── Card ──────────────────────────────────────────── */
.auth-card {
  background: rgba(255,255,255,.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(155,140,255,.3);
  border-radius: var(--radius-xl);
  box-shadow:
    0 4px 6px rgba(108,93,251,.04),
    0 12px 40px rgba(108,93,251,.12),
    0 0 0 1px rgba(255,255,255,.6) inset;
  padding: 2.25rem 2.5rem 2rem;
  width: 100%;
  max-width: 440px;
  position: relative;
  z-index: 1;
  animation: auth-card-in .55s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes auth-card-in {
  from { opacity: 0; transform: translateY(24px) scale(.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

body.dark-mode .auth-card {
  background: rgba(30,30,50,.82);
  border-color: rgba(176,160,255,.18);
  box-shadow:
    0 4px 6px rgba(0,0,0,.15),
    0 16px 48px rgba(0,0,0,.35),
    0 0 0 1px rgba(176,160,255,.06) inset;
}

/* Subtle top gradient accent line */
.auth-card::before {
  content: '';
  position: absolute;
  top: 0; left: 12%; right: 12%;
  height: 2px;
  background: linear-gradient(90deg,
    transparent,
    rgba(108,93,251,.7) 30%,
    rgba(176,100,255,.9) 50%,
    rgba(108,93,251,.7) 70%,
    transparent);
  border-radius: 0 0 2px 2px;
}

/* ── Header ────────────────────────────────────────── */
.auth-header {
  text-align: center;
  margin-bottom: 1.65rem;
}

.auth-header h2 {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -.03em;
  color: var(--text);
  margin: 0 0 .35rem;
  line-height: 1.2;
}

body.dark-mode .auth-header h2 { color: var(--dark-text); }

.auth-subtitle {
  font-size: .85rem;
  color: var(--sub);
  margin: 0;
  line-height: 1.5;
}
body.dark-mode .auth-subtitle { color: var(--dark-sub); }

/* ── Form elements ─────────────────────────────────── */
.auth-form .form-group {
  margin-bottom: 1rem;
}

.auth-form .form-group label {
  font-size: .8rem;
  font-weight: 700;
  color: var(--sub);
  letter-spacing: .02em;
  margin-bottom: .3rem;
  display: block;
}
body.dark-mode .auth-form .form-group label { color: var(--dark-sub); }

.auth-form input:not([type="checkbox"]) {
  width: 100%;
  height: 50px;
  padding: .6rem 1rem;
  border: 1.5px solid rgba(155,140,255,.3);
  border-radius: var(--radius-md);
  font-size: .92rem;
  font-family: inherit;
  color: var(--text);
  background: rgba(248,246,255,.7);
  transition: border-color .2s, box-shadow .2s, background .2s;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}

.auth-form input:not([type="checkbox"])::placeholder { color: rgba(96,96,128,.45); }

.auth-form input:not([type="checkbox"]):hover {
  border-color: rgba(108,93,251,.45);
  background: rgba(248,246,255,.95);
}

.auth-form input:not([type="checkbox"]):focus {
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 3.5px rgba(108,93,251,.14), 0 2px 8px rgba(108,93,251,.08);
}

body.dark-mode .auth-form input:not([type="checkbox"]) {
  background: rgba(42,42,66,.6);
  border-color: rgba(176,160,255,.2);
  color: var(--dark-text);
}
body.dark-mode .auth-form input:not([type="checkbox"])::placeholder { color: rgba(176,176,200,.35); }
body.dark-mode .auth-form input:not([type="checkbox"]):hover {
  border-color: rgba(176,160,255,.4);
  background: rgba(42,42,66,.8);
}
body.dark-mode .auth-form input:not([type="checkbox"]):focus {
  border-color: var(--dark-vio);
  background: rgba(42,42,66,.95);
  box-shadow: 0 0 0 3.5px rgba(176,160,255,.12), 0 2px 8px rgba(0,0,0,.12);
}

/* ── Required star ─────────────────────────────────── */
.required {
  color: #e04db0;
  font-size: .8em;
  margin-left: .15rem;
}
body.dark-mode .required { color: #ff88cc; }

/* ── Primary action button (full width) ─────────────── */
.auth-form .btn-primary.full-width,
.full-width {
  width: 100%;
  justify-content: center;
  height: 50px;
  font-size: .95rem;
  letter-spacing: .01em;
  border-radius: var(--radius-md);
  margin-top: .5rem;
  background: linear-gradient(135deg, #8c7dff 0%, #6c5dfb 50%, #5a4ce0 100%);
  box-shadow: 0 4px 16px rgba(108,93,251,.35), 0 1px 3px rgba(108,93,251,.2);
  transition: filter .15s, transform .12s, box-shadow .15s;
}

.auth-form .btn-primary.full-width:hover {
  filter: brightness(1.07);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(108,93,251,.42), 0 2px 6px rgba(108,93,251,.2);
}

.auth-form .btn-primary.full-width:active {
  transform: translateY(0);
  filter: brightness(.95);
  box-shadow: 0 2px 8px rgba(108,93,251,.25);
}

/* ── Form options row (remember-me + forgot) ────────── */
.form-options {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: .45rem;
  flex-wrap: wrap;
  gap: .35rem;
}

.remember-me {
  display: flex;
  align-items: center;
  gap: .38rem;
}

.remember-me input[type="checkbox"] {
  width: 15px; height: 15px;
  accent-color: var(--primary);
  cursor: pointer;
  border-radius: 4px;
}

.remember-me label {
  font-size: .8rem;
  font-weight: 600;
  color: var(--sub);
  cursor: pointer;
  margin: 0;
  user-select: none;
}
body.dark-mode .remember-me label { color: var(--dark-sub); }

.form-hint-right { margin-left: auto; }

/* ── Links ─────────────────────────────────────────── */
.link, .link-primary {
  text-decoration: none;
  font-weight: 700;
  transition: color .15s, opacity .15s;
}
.link-primary {
  color: var(--primary);
}
.link-primary:hover { opacity: .78; }
.link {
  color: var(--sub);
  font-size: .82rem;
}
.link:hover { color: var(--primary); }
body.dark-mode .link-primary { color: var(--dark-vio); }
body.dark-mode .link { color: var(--dark-sub); }
body.dark-mode .link:hover { color: var(--dark-vio); }

/* ── Footer hints below the form ───────────────────── */
.form-hint {
  text-align: center;
  font-size: .83rem;
  color: var(--sub);
  margin: .85rem 0 0;
}
body.dark-mode .form-hint { color: var(--dark-sub); }

.auth-terms {
  text-align: center;
  font-size: .76rem;
  color: var(--sub);
  margin: .5rem 0 0;
  opacity: .8;
}
body.dark-mode .auth-terms { color: var(--dark-sub); }

/* ── Messages ──────────────────────────────────────── */
.message {
  display: flex;
  align-items: flex-start;
  gap: .55rem;
  padding: .72rem 1rem;
  border-radius: var(--radius-md);
  font-size: .85rem;
  line-height: 1.5;
  margin-bottom: 1.1rem;
  border: 1px solid transparent;
  animation: msg-in .3s ease both;
}
@keyframes msg-in {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.message.success {
  background: rgba(39,174,96,.09);
  color: #157a3a;
  border-color: rgba(39,174,96,.22);
}
body.dark-mode .message.success {
  background: rgba(39,174,96,.08);
  color: #6fcf97;
  border-color: rgba(39,174,96,.18);
}

.message.error {
  background: rgba(235,77,105,.08);
  color: #c0284a;
  border-color: rgba(235,77,105,.22);
}
body.dark-mode .message.error {
  background: rgba(235,77,105,.07);
  color: #ff7ca3;
  border-color: rgba(235,77,105,.2);
}

/* ── Theme toggle — auth page variant ──────────────── */
.auth-theme-toggle {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 100;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  background: rgba(255,255,255,.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(155,140,255,.3);
  border-radius: 50%;
  box-shadow: 0 4px 16px rgba(108,93,251,.15);
  transition: background .2s, transform .2s, box-shadow .2s;
  cursor: pointer;
}
.auth-theme-toggle:hover {
  background: rgba(255,255,255,.96);
  box-shadow: 0 6px 20px rgba(108,93,251,.22);
  transform: rotate(20deg) scale(1.06);
}
body.dark-mode .auth-theme-toggle {
  background: rgba(30,30,50,.82);
  border-color: rgba(176,160,255,.2);
  box-shadow: 0 4px 16px rgba(0,0,0,.3);
}
body.dark-mode .auth-theme-toggle:hover {
  background: rgba(42,42,66,.9);
}

/* ── Divider ───────────────────────────────────────── */
.auth-divider {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin: 1rem 0;
  color: var(--sub);
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .04em;
}
.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: rgba(155,140,255,.2);
}
body.dark-mode .auth-divider { color: var(--dark-sub); }
body.dark-mode .auth-divider::before,
body.dark-mode .auth-divider::after { background: rgba(176,160,255,.12); }

/* ── Secondary btn inside auth forms ───────────────── */
.auth-form .btn-secondary {
  background: rgba(108,93,251,.07);
  border: 1.5px solid rgba(108,93,251,.22);
  color: var(--primary);
  font-weight: 700;
  border-radius: var(--radius-md);
  transition: background .15s, border-color .15s, transform .12s;
}
.auth-form .btn-secondary:hover {
  background: rgba(108,93,251,.13);
  border-color: rgba(108,93,251,.38);
  transform: translateY(-1px);
  filter: none;
}
body.dark-mode .auth-form .btn-secondary {
  background: rgba(176,160,255,.08);
  border-color: rgba(176,160,255,.22);
  color: var(--dark-vio);
}
body.dark-mode .auth-form .btn-secondary:hover {
  background: rgba(176,160,255,.14);
  border-color: rgba(176,160,255,.38);
}

/* ── small hint text below inputs ──────────────────── */
.auth-form small {
  display: block;
  font-size: .75rem;
  color: var(--sub);
  margin-top: .25rem;
  opacity: .85;
}
body.dark-mode .auth-form small { color: var(--dark-sub); }

/* ── Responsive ────────────────────────────────────── */
@media (max-width: 480px) {
  .auth-card {
    padding: 1.75rem 1.35rem 1.5rem;
    border-radius: var(--radius-lg);
    max-width: 100%;
  }
  .auth-header h2 { font-size: 1.38rem; }
  .auth-theme-toggle {
    bottom: 1rem;
    right: 1rem;
    width: 38px;
    height: 38px;
    font-size: .95rem;
  }
}

@media (max-width: 360px) {
  .auth-card { padding: 1.5rem 1.1rem 1.25rem; }
}

/* ══════════════════════════════════════════════════════
   ARTICLE PAGE — Modern Blog Enhancement
   Smooth animations · Reading progress · TOC · Back-top
   ══════════════════════════════════════════════════════ */

/* ── Reading Progress Bar ───────────────────────────── */
.reading-progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  background: linear-gradient(90deg, #6c5dfb 0%, #ff7ad9 55%, #9b8cff 100%);
  width: 0%;
  z-index: 2000;
  transition: width .1s linear;
  border-radius: 0 2px 2px 0;
  box-shadow: 0 0 10px rgba(108,93,251,.55);
}

/* ── Page entrance animations ───────────────────────── */
@keyframes article-fade-up {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes article-fade-left {
  from { opacity: 0; transform: translateX(-12px); }
  to   { opacity: 1; transform: translateX(0); }
}

.article-page .back-link       { animation: article-fade-left .4s cubic-bezier(.22,1,.36,1) both; }
.article-page .article-unified-card { animation: article-fade-up .55s cubic-bezier(.22,1,.36,1) .06s both; }
.article-page .actions         { animation: article-fade-up .5s cubic-bezier(.22,1,.36,1) .18s both; }
.article-page .comments-section{ animation: article-fade-up .5s cubic-bezier(.22,1,.36,1) .26s both; }

/* ── Scroll-reveal for content elements ─────────────── */
.content-reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .5s cubic-bezier(.22,1,.36,1), transform .5s cubic-bezier(.22,1,.36,1);
}
.content-revealed {
  opacity: 1 !important;
  transform: none !important;
}

/* ══════════════════════════════════════════════════════
   UNIFIED ARTICLE CARD
   One card, no seams — header → meta → toc → content
   ══════════════════════════════════════════════════════ */
.article-unified-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 4px 32px rgba(108,93,251,.08), 0 1px 4px rgba(108,93,251,.04);
  margin-bottom: 1.25rem;
}
body.dark-mode .article-unified-card {
  background: var(--dark-card);
  border-color: var(--dark-card-border);
  box-shadow: 0 4px 32px rgba(0,0,0,.25), 0 1px 4px rgba(0,0,0,.15);
}

/* ── Section: header ─────────────────────────────────── */
.auc-header {
  padding: 2rem 2.25rem 1.5rem;
  border-bottom: 1px solid rgba(155,140,255,.1);
}
body.dark-mode .auc-header { border-bottom-color: rgba(176,160,255,.1); }

/* Gradient accent bar at top of card */
.article-unified-card::before {
  display: none; /* use box decoration instead */
}
.auc-header::before {
  content: '';
  display: block;
  height: 3px;
  width: 56px;
  background: linear-gradient(90deg, var(--primary), rgba(155,140,255,.4));
  border-radius: 2px;
  margin-bottom: .85rem;
}

/* Title — serif, gradient fill */
.article-unified-card .title {
  font-family: 'Noto Serif SC', 'STSong', 'SimSun', serif !important;
  font-size: clamp(1.55rem, 4vw, 2.25rem) !important;
  font-weight: 900 !important;
  line-height: 1.24 !important;
  letter-spacing: -.02em !important;
  margin-top: .6rem !important;
  background: linear-gradient(135deg, var(--text) 20%, #6c5dfb 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
body.dark-mode .article-unified-card .title {
  background: linear-gradient(135deg, var(--dark-text) 20%, var(--dark-vio) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Section: meta + tags row ────────────────────────── */
.auc-meta {
  display: flex;
  align-items: center;
  gap: .5rem;
  flex-wrap: wrap;
  padding: .75rem 2.25rem;
  background: rgba(155,140,255,.035);
  border-bottom: 1px solid rgba(155,140,255,.08);
  font-size: .8rem;
}
body.dark-mode .auc-meta {
  background: rgba(176,160,255,.03);
  border-bottom-color: rgba(176,160,255,.08);
}

.meta-item {
  display: inline-flex;
  align-items: center;
  color: var(--sub);
  font-weight: 500;
}
body.dark-mode .meta-item { color: var(--dark-sub); }

.meta-divider {
  opacity: .25;
  font-weight: 300;
  user-select: none;
}
.meta-spacer {
  flex: 1;
  min-width: .25rem;
}

.auc-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .3rem;
}
.auc-tags .tag {
  transition: transform .2s cubic-bezier(.22,1,.36,1), background .15s, box-shadow .15s;
  cursor: default;
}
.auc-tags .tag:hover {
  transform: translateY(-2px);
  background: rgba(108,93,251,.14) !important;
  box-shadow: 0 3px 10px rgba(108,93,251,.14);
}

/* ── Section: TOC ────────────────────────────────────── */
.toc-widget {
  padding: 1rem 2.25rem;
  background: rgba(248,247,255,.6);
  border-bottom: 1px solid rgba(155,140,255,.08);
  position: relative;
  overflow: hidden;
}
/* left accent stripe */
.toc-widget::after {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--primary) 0%, rgba(155,140,255,.2) 100%);
}
body.dark-mode .toc-widget {
  background: rgba(20,20,38,.5);
  border-bottom-color: rgba(176,160,255,.08);
}

.toc-title {
  font-size: .68rem;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--sub);
  margin: 0 0 .65rem;
  display: flex;
  align-items: center;
  gap: .4rem;
}
body.dark-mode .toc-title { color: var(--dark-sub); }

.toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: .02rem;
}
.toc-list a {
  display: block;
  font-size: .81rem;
  color: var(--sub);
  text-decoration: none;
  padding: .26rem .55rem;
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
  transition: color .18s, background .18s, border-color .18s,
              padding-left .22s cubic-bezier(.22,1,.36,1);
  line-height: 1.45;
}
.toc-list a:hover,
.toc-list a.active {
  color: var(--primary);
  background: var(--primary-soft);
  border-left-color: var(--primary);
  padding-left: .8rem;
}
body.dark-mode .toc-list a { color: var(--dark-sub); }
body.dark-mode .toc-list a:hover,
body.dark-mode .toc-list a.active {
  color: var(--dark-vio);
  background: rgba(176,160,255,.08);
  border-left-color: var(--dark-vio);
}
.toc-list .toc-h3 { padding-left: 1rem; font-size: .76rem; opacity: .85; }
.toc-list .toc-h3:hover,
.toc-list .toc-h3.active { padding-left: 1.3rem; opacity: 1; }

/* ── Section: article body ───────────────────────────── */
.article-unified-card .article-content {
  background: transparent !important;
  border: none !important;
  border-radius: 0 !important;
  box-shadow: none !important;
  padding: 2rem 2.25rem 2.5rem !important;
  margin-bottom: 0 !important;
  font-size: 1rem;
  line-height: 1.9;
}

/* Headings */
.article-content h2 {
  display: flex !important;
  align-items: center !important;
  gap: .5rem !important;
  font-size: 1.28rem !important;
  border-bottom: none !important;
  padding-bottom: 0 !important;
  margin-top: 2.2rem !important;
}
.article-content h2::before {
  content: '';
  display: inline-block;
  width: 4px;
  min-height: 1.05em;
  height: 1.05em;
  background: linear-gradient(180deg, var(--primary), rgba(155,140,255,.35));
  border-radius: 2px;
  flex-shrink: 0;
}
.article-content h3 {
  font-size: 1.08rem !important;
  margin-top: 1.75rem !important;
  display: flex !important;
  align-items: center !important;
  gap: .3rem !important;
}
.article-content h3::before {
  content: '▸';
  color: var(--primary);
  font-size: .78em;
  opacity: .55;
  flex-shrink: 0;
}

/* Blockquote */
.article-content blockquote {
  border-left: 4px solid var(--primary) !important;
  background: linear-gradient(135deg,
    rgba(108,93,251,.05) 0%, rgba(155,140,255,.03) 100%) !important;
  padding: 1rem 1.4rem !important;
  margin: 1.75rem 0 !important;
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0 !important;
  position: relative;
  font-style: normal !important;
}
.article-content blockquote::before {
  content: '"';
  position: absolute;
  top: -.1em; left: .55rem;
  font-size: 4rem;
  color: var(--primary);
  opacity: .08;
  line-height: 1;
  font-family: 'Noto Serif SC', Georgia, serif;
  pointer-events: none;
}

/* ── Responsive: mobile padding ─────────────────────── */
@media (max-width: 640px) {
  .auc-header { padding: 1.35rem 1.2rem 1.1rem; }
  .auc-meta   { padding: .65rem 1.2rem; }
  .toc-widget { padding: .9rem 1.2rem; }
  .article-unified-card .article-content { padding: 1.4rem 1.2rem 1.75rem !important; }
}

/* ── Enhanced actions bar ───────────────────────────── */
.article-page .actions {
  padding: .8rem 1rem;
  background: rgba(255,255,255,.6);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(155,140,255,.13);
  border-radius: var(--radius-xl);
  margin-bottom: 1.5rem;
  box-shadow: 0 2px 12px rgba(108,93,251,.05);
}
body.dark-mode.article-page .actions {
  background: rgba(28,28,48,.55);
  border-color: rgba(176,160,255,.16);
  box-shadow: 0 2px 12px rgba(0,0,0,.22);
}
body.dark-mode.article-page .actions .btn.secondary {
  background: rgba(176,160,255,.1);
  color: var(--dark-vio);
  border-color: rgba(176,160,255,.22);
  box-shadow: none;
}
body.dark-mode.article-page .actions .btn.secondary:hover {
  background: rgba(176,160,255,.18);
  border-color: rgba(176,160,255,.38);
}

/* ── Enhanced comments section ──────────────────────── */
.article-page .comments-section {
  border-radius: 20px !important;
  padding: 1.75rem 2.25rem !important;
  box-shadow: 0 4px 28px rgba(108,93,251,.06) !important;
}
@media (max-width: 640px) {
  .article-page .comments-section { padding: 1.2rem 1.1rem !important; }
}
.article-page .comments-section h3 {
  font-size: 1rem !important;
  display: flex;
  align-items: center;
  gap: .45rem;
}
.article-page .comments-section h3::before {
  content: '';
  display: inline-block;
  width: 3px;
  height: .95em;
  background: linear-gradient(180deg, var(--primary), rgba(155,140,255,.35));
  border-radius: 2px;
  flex-shrink: 0;
}

/* Comment entrance animation */
.fb-top-comment:nth-child(1) { animation: article-fade-up .4s cubic-bezier(.22,1,.36,1) .05s both; }
.fb-top-comment:nth-child(2) { animation: article-fade-up .4s cubic-bezier(.22,1,.36,1) .10s both; }
.fb-top-comment:nth-child(3) { animation: article-fade-up .4s cubic-bezier(.22,1,.36,1) .15s both; }
.fb-top-comment:nth-child(4) { animation: article-fade-up .4s cubic-bezier(.22,1,.36,1) .20s both; }

/* Comment form */
.article-page .comment-form input[type="text"],
.article-page .comment-form input[type="email"],
.article-page .comment-form textarea {
  background: rgba(248,247,255,.8) !important;
  transition: border-color .2s, box-shadow .2s, background .2s !important;
}
.article-page .comment-form input:focus,
.article-page .comment-form textarea:focus {
  background: #fff !important;
  box-shadow: 0 0 0 3px rgba(108,93,251,.11), 0 2px 8px rgba(108,93,251,.06) !important;
}
body.dark-mode.article-page .comment-form input[type="text"],
body.dark-mode.article-page .comment-form input[type="email"],
body.dark-mode.article-page .comment-form textarea {
  background: rgba(28,28,48,.6) !important;
  border-color: rgba(176,160,255,.2) !important;
  color: var(--dark-text) !important;
}
body.dark-mode.article-page .comment-form input::placeholder,
body.dark-mode.article-page .comment-form textarea::placeholder {
  color: rgba(176,176,200,.38) !important;
}
body.dark-mode.article-page .comment-form input:focus,
body.dark-mode.article-page .comment-form textarea:focus {
  background: rgba(42,42,66,.9) !important;
  border-color: var(--dark-vio) !important;
  box-shadow: 0 0 0 3px rgba(176,160,255,.14), 0 2px 8px rgba(0,0,0,.12) !important;
}
.article-page .comment-form .btn.primary:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 22px rgba(108,93,251,.38) !important;
}

/* ── Back to Top button ─────────────────────────────── */
.back-top-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #7c6dfb, var(--primary));
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 18px rgba(108,93,251,.42);
  transition: opacity .35s cubic-bezier(.22,1,.36,1),
              transform .35s cubic-bezier(.22,1,.36,1),
              box-shadow .25s;
  opacity: 0;
  transform: translateY(14px) scale(.86);
  z-index: 500;
  pointer-events: none;
}
.back-top-btn.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}
.back-top-btn:hover {
  transform: translateY(-3px) scale(1.07);
  box-shadow: 0 8px 26px rgba(108,93,251,.52);
}
.back-top-btn:active { transform: scale(.91); }

/* ── Back link ───────────────────────────────────────── */
.article-page .back-link {
  transition: color .15s, background .15s, transform .2s cubic-bezier(.22,1,.36,1);
}
.article-page .back-link:hover { transform: translateX(-2px); }

/* ── Responsive wrap ─────────────────────────────────── */
@media (max-width: 768px) {
  .article-page .wrap { padding: 1.1rem .9rem; margin-top: 68px; }
  .back-top-btn { bottom: 1.25rem; right: 1.25rem; width: 40px; height: 40px; }
}