/* ============================================================
   layout-v/style.css — StorymMag Tech-inspired Card Mix
   深色 header + 精選3橫排 + 3欄卡片格 + 高資訊密度
   All colors via var(--clr-*); no hardcoded hex except #fff / rgba overlays
   ============================================================ */

/* ── Layout-V: Header (dark) ────────────────────────────────── */
.layout-v-header {
  background: var(--clr-bg-dark);
  position: sticky;
  top: 0;
  z-index: 200;
}
.layout-v-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  padding: 0 var(--space-5);
  max-width: var(--container);
  margin: 0 auto;
  gap: var(--space-4);
}
.layout-v-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 900;
  color: var(--clr-text-inv);
  letter-spacing: .02em;
  flex-shrink: 0;
}
.layout-v-logo img { height: 30px; width: auto; }
.layout-v-header-cta {
  flex-shrink: 0;
}

/* ── Layout-V: Tab Bar ──────────────────────────────────────── */
.layout-v-tab-bar {
  background: var(--clr-bg);
  border-bottom: 1px solid var(--clr-border);
  overflow-x: auto;
  white-space: nowrap;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.layout-v-tab-bar::-webkit-scrollbar { display: none; }
.layout-v-tab-bar-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-5);
  display: flex;
  align-items: center;
  gap: 0;
}

/* ── Layout-V: Tab ──────────────────────────────────────────── */
.layout-v-tab {
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  font-size: 13px;
  font-weight: 700;
  color: var(--clr-text-muted);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  transition: color var(--transition), border-color var(--transition);
  cursor: pointer;
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
  font-family: var(--font-body);
  text-decoration: none;
}
.layout-v-tab:hover { color: var(--clr-text); }
.layout-v-tab.active {
  color: var(--clr-accent);
  border-bottom-color: var(--clr-accent);
}

/* ── Layout-V: Featured 3-col ──────────────────────────────── */
.layout-v-featured {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
@media (max-width: 768px) {
  .layout-v-featured { grid-template-columns: 1fr; }
}
@media (min-width: 640px) and (max-width: 768px) {
  .layout-v-featured { grid-template-columns: repeat(2, 1fr); }
}

/* ── Layout-V: Featured Card ───────────────────────────────── */
.layout-v-featured-card {
  border-top: 3px solid var(--clr-accent);
  background: var(--clr-bg);
  border-left: 1px solid var(--clr-border);
  border-right: 1px solid var(--clr-border);
  border-bottom: 1px solid var(--clr-border);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
}
.layout-v-featured-card:hover {
  box-shadow: var(--clr-shadow-md);
  transform: translateY(-2px);
}

/* ── Layout-V: Featured Image ──────────────────────────────── */
.layout-v-featured-img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  display: block;
  background: var(--clr-bg-alt);
}

/* ── Layout-V: Featured Card Body ─────────────────────────── */
.layout-v-featured-body {
  padding: var(--space-4);
  flex: 1;
  display: flex;
  flex-direction: column;
}
.layout-v-featured-cat {
  font-size: 10px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--clr-accent);
  margin-bottom: var(--space-2);
  display: block;
}
.layout-v-featured-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--clr-text);
  line-height: 1.35;
  margin-bottom: var(--space-2);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}
.layout-v-featured-title:hover { color: var(--clr-accent); }
.layout-v-featured-date {
  font-size: 11px;
  color: var(--clr-text-muted);
  margin-top: var(--space-2);
}

/* ── Layout-V: Section Bar ─────────────────────────────────── */
.layout-v-section-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  margin: 24px 0 16px;
  border-bottom: 2px solid var(--clr-accent);
}
.layout-v-section-bar-title {
  font-family: var(--font-heading);
  font-size: clamp(18px, 2.5vw, 22px);
  font-weight: 900;
  color: var(--clr-text);
  letter-spacing: -.01em;
  white-space: nowrap;
}
.layout-v-section-bar-line {
  flex: 1;
  /* decorative — the border-bottom of parent handles the line */
}
.layout-v-section-bar a {
  font-size: 12px;
  font-weight: 700;
  color: var(--clr-accent);
  white-space: nowrap;
  flex-shrink: 0;
}
.layout-v-section-bar a:hover { text-decoration: underline; }

/* ── Layout-V: Main + Sidebar Layout ──────────────────────── */
.layout-v-main {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--space-8);
  align-items: start;
}
@media (max-width: 900px) {
  .layout-v-main { grid-template-columns: 1fr; }
}

/* ── Layout-V: Mini 2x2 Card Grid ──────────────────────────── */
.layout-v-mini-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
@media (max-width: 500px) {
  .layout-v-mini-grid { grid-template-columns: 1fr; }
}
.layout-v-mini-card {
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
}
.layout-v-mini-card:hover {
  box-shadow: var(--clr-shadow-md);
  transform: translateY(-2px);
}
.layout-v-mini-img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  background: var(--clr-bg-alt);
  display: block;
}
.layout-v-mini-body { padding: var(--space-3); }
.layout-v-mini-cat {
  font-size: 10px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--clr-accent);
  margin-bottom: 4px;
  display: block;
}
.layout-v-mini-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--clr-text);
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.layout-v-mini-title:hover { color: var(--clr-accent); }
.layout-v-mini-date { font-size: 11px; color: var(--clr-text-muted); margin-top: 4px; }

/* ── Layout-V: Sidebar ──────────────────────────────────────── */
.layout-v-sidebar {
  background: var(--clr-bg-alt);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}
.layout-v-sidebar-sticky { position: sticky; top: 72px; }
.layout-v-sidebar-section-title {
  font-size: 11px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--clr-accent);
  padding-bottom: var(--space-2);
  border-bottom: 2px solid var(--clr-accent);
  margin-bottom: var(--space-3);
}

/* ── Layout-V: Sidebar Hot List ─────────────────────────────── */
.layout-v-hot-item {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 10px;
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--clr-border);
  align-items: start;
}
.layout-v-hot-item:last-child { border-bottom: none; }
.layout-v-hot-img {
  width: 52px;
  height: 40px;
  object-fit: cover;
  border-radius: var(--radius-xs);
  background: var(--clr-bg);
  display: block;
}
.layout-v-hot-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--clr-text);
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.layout-v-hot-title:hover { color: var(--clr-accent); }

/* ── Layout-V: Sidebar Category List ───────────────────────── */
.layout-v-cat-list { list-style: none; }
.layout-v-cat-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 0;
  border-bottom: 1px solid var(--clr-border);
  font-size: 13px;
}
.layout-v-cat-item:last-child { border-bottom: none; }
.layout-v-cat-item a { color: var(--clr-text); font-weight: 600; }
.layout-v-cat-item a:hover { color: var(--clr-accent); }
.layout-v-cat-count {
  font-size: 11px;
  background: var(--clr-accent-faint);
  color: var(--clr-accent);
  font-weight: 700;
  padding: 2px 7px;
  border-radius: var(--radius-full);
}

/* ── Layout-V: Sidebar CTA Widget ──────────────────────────── */
.layout-v-sidebar-cta {
  background: var(--clr-bg-dark);
  border-radius: var(--radius-sm);
  padding: var(--space-5);
  text-align: center;
}
.layout-v-sidebar-cta-title {
  font-size: 13px;
  font-weight: 900;
  color: var(--clr-text-inv);
  margin-bottom: var(--space-2);
}
.layout-v-sidebar-cta-desc {
  font-size: 12px;
  color: var(--clr-text-inv-muted);
  margin-bottom: var(--space-4);
  line-height: 1.55;
}

/* ── Layout-V: Full-width Dark CTA ─────────────────────────── */
.layout-v-fullcta {
  background: var(--clr-bg-dark);
  padding: var(--space-12) var(--space-5);
  text-align: center;
  margin: var(--space-10) 0 0;
}
.layout-v-fullcta h2 {
  font-family: var(--font-heading);
  font-size: clamp(24px, 4vw, 40px);
  font-weight: 900;
  color: var(--clr-text-inv);
  margin-bottom: var(--space-4);
}
.layout-v-fullcta p {
  font-size: 15px;
  color: var(--clr-text-inv-muted);
  margin-bottom: var(--space-6);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.65;
}

/* ── Layout-V: Article page Tab Bar preserve ────────────────── */
.layout-v-article-tab-bar { margin-bottom: var(--space-5); }

/* ── Responsive adjustments ────────────────────────────────── */
@media (max-width: 640px) {
  .layout-v-header-inner { height: 52px; }
  .layout-v-logo { font-size: 18px; }
  .layout-v-fullcta { padding: var(--space-8) var(--space-4); }
}