/* ─────────────────────────────────────────────────────────────────────────────
   Briefing (v5.6 - Fix: Mobile Vertical Scroll)
   ──────────────────────────────────────────────────────────────────────────── */

/* ===== Design tokens ===== */
:root {
  --container-radius: 12px;
  --gap: 20px;
  
  --card-radius: 12px;
  --card-img-radius: 8px;

  /* DEFAULT: DARK MODE (Matches Headroom Base) */
  --briefing-card-bg: linear-gradient(180deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.02) 100%);
  --briefing-card-border: rgba(255, 255, 255, 0.12);
  --briefing-card-shadow: 0 4px 12px rgba(0,0,0,0.2);
  --briefing-bg-hover: linear-gradient(180deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.04) 100%);
  --briefing-border-hover: rgba(255, 255, 255, 0.3);
  --briefing-meta-font: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* LIGHT MODE OVERRIDES */
html.light-mode,
html[data-theme="light"] {
  --briefing-card-bg: #ffffff;
  --briefing-card-border: #e0e0e0;
  --briefing-card-shadow: 0 2px 8px rgba(0,0,0,0.04);
  --briefing-bg-hover: #fdfdfd;
  --briefing-border-hover: #b0b0b0;
}

/* ===== Base container ===== */
.briefing-container {
  padding: 20px;
  width: 100%;
  box-sizing: border-box;
}

#main-container.briefing-container {
  max-width: 1440px !important;
  margin-inline: auto;
}

/* ===== Header Typography ===== */
.briefing-container h1, .briefing-container h2, .briefing-container h3 {
  margin: 0;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-text-accent);
}

.section-description {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-top: 4px;
  max-width: 600px;
  line-height: 1.4;
  font-weight: 400;
  opacity: 0.8;
}

/* ===== Tabs ===== */
.briefing-tabs {
  display: flex;
  gap: 8px;
  padding: 12px 8px 24px;
  border-bottom: 1px solid var(--color-border-primary);
  margin-bottom: 20px;
}
.briefing-tab {
  border-radius: 6px;
  border: 1px solid transparent;
  padding: 8px 16px;
  background: transparent;
  color: var(--color-text-secondary);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}
.briefing-tab:hover {
  background: var(--color-background-hover);
  color: var(--color-text-primary);
}
.briefing-tab.is-active {
  background: var(--color-background-interactive);
  color: var(--color-text-accent);
  border-color: var(--color-border-secondary);
}
.briefing-tabpanel { display: none; animation: fadeIn 0.2s ease; }
.briefing-tabpanel.is-active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: translateY(0); } }

/* ===== Carousel Sections ===== */
.carousel-section { margin-bottom: 48px; }

/* Unified Header Layout */
.carousel-section .section-header, 
.weekly-carousel-section .section-header {
  padding: 0 4px 16px;
  border-bottom: 1px solid var(--color-border-primary);
  margin-bottom: 16px;
  display: flex;
  align-items: flex-end; 
  justify-content: space-between;
}

.header-text { display: flex; flex-direction: column; }

.carousel-controls { display: inline-flex; gap: 8px; }
.carousel-btn {
  width: 32px; height: 32px;
  border-radius: 6px;
  border: 1px solid var(--color-border-primary);
  background: var(--color-background-tertiary);
  color: var(--color-text-primary);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: all 0.15s ease;
  font-size: 18px;
  line-height: 1;
  padding-bottom: 2px;
}
.carousel-btn:hover {
  border-color: var(--color-text-secondary);
  color: var(--color-text-accent);
}

/* ===== SCROLL FIX ===== */
.briefing-carousel, 
.weekly-carousel {
  display: flex; 
  gap: 16px;
  overflow-x: auto;
  padding-bottom: 10px;
  scroll-snap-type: x mandatory;
  scrollbar-width: none; 
  
  /* FIX: Full bleed scroll area */
  margin-left: -20px;
  margin-right: -20px;
  padding-left: 20px;
  padding-right: 20px;
}

.briefing-carousel::-webkit-scrollbar, 
.weekly-carousel::-webkit-scrollbar { display: none; }

/* ===== The Card (Shared Base) ===== */
.carousel-card {
  flex: 0 0 260px;
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
}

.carousel-card-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  border-radius: var(--card-radius);
  padding: 12px;
  
  background: var(--briefing-card-bg);
  border: 1px solid var(--briefing-card-border);
  box-shadow: var(--briefing-card-shadow);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  position: relative;
  overflow: hidden;
}

.carousel-card-inner:hover {
  transform: translateY(-2px);
  background: var(--briefing-bg-hover);
  border-color: var(--briefing-border-hover);
  box-shadow: 0 8px 20px rgba(0,0,0,0.08);
}

/* Images */
.carousel-card-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--card-img-radius);
  overflow: hidden;
  background: var(--color-background-tertiary);
  margin-bottom: 12px;
  position: relative;
}
.carousel-img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.4s ease;
}
.carousel-card-inner:hover .carousel-img { transform: scale(1.05); }

/* Body & Intent Tag */
.carousel-card-body {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.briefing-tag {
  position: absolute;
  top: 6px; left: 6px;
  padding: 3px 6px;
  border-radius: 4px;
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  z-index: 2;
  box-shadow: 0 2px 4px rgba(0,0,0,0.3);
  color: #fff;
}

.carousel-card-title {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-text-accent);
}
.carousel-card-title a {
  color: inherit; text-decoration: none;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.carousel-card-title a:hover { text-decoration: underline; text-decoration-thickness: 1px; }

/* ===== Meta Data ===== */
.briefing-meta {
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px solid var(--color-border-primary);
  display: flex;
  align-items: flex-end; 
  justify-content: space-between;
  font-family: var(--briefing-meta-font);
  font-size: 10px;
  color: var(--color-text-subtle);
  letter-spacing: -0.3px;
}

.meta-main { display: flex; flex-direction: column; gap: 3px; }
.meta-source { font-weight: 700; color: var(--color-text-primary); text-transform: uppercase; }
.meta-time { opacity: 0.8; }

.briefing-meta .meta-actions {
  display: flex;
  gap: 8px;
  align-items: center;
  height: 24px;
}

.briefing-meta .meta-icon {
  color: var(--color-text-subtle);
  transition: color 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px; height: 20px;
  padding: 0; 
  margin: 0;
  background: transparent;
  border: none;
  box-shadow: none;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
}

.briefing-meta .meta-icon svg,
.briefing-meta .meta-icon i {
  font-size: 14px;
  width: 14px;
  height: 14px;
  display: block;
}

.briefing-meta .meta-icon:hover { 
  color: var(--color-text-accent); 
  transform: none;
  background: transparent;
}

.briefing-meta .meta-icon:active {
  transform: translateY(1px);
}

/* Read Later Active State */
.read-later-btn.saved { color: var(--color-brand-pink) !important; }
.read-later-btn.saved i { font-weight: 900; }

/* ===== Best of Week (Redesigned) ===== */
.weekly-carousel-section { margin-top: 20px; }

.weekly-slide {
  flex: 0 0 90%;
  max-width: 800px;
  scroll-snap-align: start;
}

.weekly-card {
  background: var(--briefing-card-bg);
  border: 1px solid var(--briefing-card-border);
  box-shadow: var(--briefing-card-shadow);
  border-radius: var(--card-radius);
  transition: transform 0.2s ease, border-color 0.2s ease;
  overflow: hidden;
  display: grid;
  grid-template-columns: 50% 50%;
  height: 280px;
}

.weekly-card:hover {
  transform: translateY(-2px);
  background: var(--briefing-bg-hover);
  border-color: var(--briefing-border-hover);
}

.weekly-card-media {
  position: relative;
  height: 100%;
  border-right: 1px solid var(--color-border-primary);
}
.weekly-img { width: 100%; height: 100%; object-fit: cover; }

.weekly-card-content {
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
}

.weekly-card-title {
  margin: 0 0 12px;
  font-size: 20px;
  font-weight: 600;
  line-height: 1.25;
}
.weekly-card-preview {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}

@media (min-width: 920px) {
  .weekly-slide { flex-basis: 600px; }
}

@media (max-width: 920px) {
  .carousel-card { flex-basis: 75%; }
  .carousel-section .section-header { flex-direction: column; align-items: flex-start; gap: 10px; }
  .carousel-controls { display: none; }
  
  .weekly-card {
    grid-template-columns: 1fr;
    height: auto;
  }
  .weekly-card-media {
    height: 180px;
    border-right: none;
    border-bottom: 1px solid var(--color-border-primary);
  }
  .weekly-card-content { padding: 16px; }
  .weekly-card-title { font-size: 18px; }

  /* FIX: Force enable vertical scrolling for Briefing container on Mobile.
     This overrides the default overflow:hidden from headroom.css 
     which is there to support the Dashboard grid layout. */
  #main-container.briefing-container {
    overflow-y: auto !important;
    overflow-x: hidden;
    padding-bottom: 40px; /* Ensure content isn't cut off at bottom */
    display: block !important;
  }
}