/* ============================================================
   TOPAS REPORT v5 - STYLE CHUNG
   Mobile-first, màu sắc rõ rệt cho từng concept
   ============================================================ */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: #2c2c2c;
  background: #fafaf7;
  -webkit-font-smoothing: antialiased;
  padding: 0;
}

/* ----- PALETTE ----- */
:root {
  --color-bg: #fafaf7;
  --color-bg-soft: #f5f2e8;
  --color-text: #2c2c2c;
  --color-text-soft: #555;
  --color-text-muted: #888;
  --color-gold: #c9a961;
  --color-gold-deep: #8b6f1f;
  --color-card: #ffffff;
  --color-shadow: rgba(60, 40, 10, 0.08);
  
  /* CONCEPT COLORS - đậm hơn rõ rệt */
  --accent-cung-dinh: #8b1e1e;
  --accent-cung-dinh-deep: #5a0e0e;
  --accent-cung-dinh-soft: #fef0ed;
  --accent-cung-dinh-gradient: linear-gradient(135deg, #8b1e1e 0%, #c43a3a 50%, #d4af37 100%);
  
  --accent-tram-ngoc: #2d4a3e;
  --accent-tram-ngoc-deep: #1a2e26;
  --accent-tram-ngoc-soft: #edf3f0;
  --accent-tram-ngoc-gradient: linear-gradient(135deg, #1a2e26 0%, #2d4a3e 50%, #6b8e7a 100%);
  
  --accent-bhutan: #1a6c8c;
  --accent-bhutan-deep: #0e3a4a;
  --accent-bhutan-soft: #ebf5fa;
  --accent-bhutan-gradient: linear-gradient(135deg, #0e3a4a 0%, #1a6c8c 50%, #4dadc9 100%);
  
  --accent-tay-tang: #6b4423;
  --accent-tay-tang-deep: #3a2410;
  --accent-tay-tang-soft: #f5ede0;
  --accent-tay-tang-gradient: linear-gradient(135deg, #3a2410 0%, #6b4423 50%, #c4a888 100%);
}

/* ----- LAYOUT ----- */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px;
}

/* ----- TOP NAV ----- */
.topnav {
  background: #2c2c2c;
  color: #fff;
  padding: 12px 16px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.topnav-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.topnav-brand {
  font-weight: 600;
  font-size: 15px;
  color: var(--color-gold);
}

.topnav-links {
  display: flex;
  gap: 8px;
  font-size: 13px;
  flex-wrap: wrap;
}

.topnav-links a {
  color: #fff;
  text-decoration: none;
  padding: 4px 8px;
  border-radius: 4px;
  transition: background 0.2s;
}

.topnav-links a:hover, .topnav-links a.active {
  background: var(--color-gold);
  color: #2c2c2c;
}

/* ----- HERO BANNER (mới - cho concept pages) ----- */
.hero-banner {
  position: relative;
  width: 100%;
  height: 280px;
  overflow: hidden;
  margin-bottom: 24px;
  border-radius: 0 0 16px 16px;
  box-shadow: 0 4px 16px var(--color-shadow);
}

.hero-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hero-banner::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.1) 0%, rgba(0,0,0,0.7) 100%);
}

.hero-text {
  position: absolute;
  bottom: 24px;
  left: 24px;
  right: 24px;
  z-index: 2;
  color: white;
}

.hero-text h1 {
  color: white;
  font-size: 28px;
  margin: 0 0 6px;
  text-shadow: 0 2px 8px rgba(0,0,0,0.5);
}

.hero-text .hero-subtitle {
  color: rgba(255,255,255,0.95);
  font-size: 15px;
  font-style: italic;
  text-shadow: 0 1px 4px rgba(0,0,0,0.5);
}

.hero-credit {
  position: absolute;
  bottom: 6px;
  right: 12px;
  z-index: 2;
  font-size: 10px;
  color: rgba(255,255,255,0.6);
}

.hero-credit a {
  color: rgba(255,255,255,0.8);
  text-decoration: none;
}

/* ----- HEADINGS ----- */
h1 {
  font-size: 24px;
  font-weight: 700;
  margin: 24px 0 8px;
  color: var(--color-text);
  line-height: 1.3;
}

h2 {
  font-size: 20px;
  font-weight: 600;
  margin: 32px 0 12px;
  padding: 12px 0 0;
  border-top: 3px solid var(--color-gold);
  color: var(--color-text);
  line-height: 1.3;
}

h3 {
  font-size: 17px;
  font-weight: 600;
  margin: 20px 0 10px;
  color: var(--color-text);
}

.subtitle {
  color: var(--color-text-soft);
  font-size: 15px;
  font-style: italic;
  margin-bottom: 20px;
}

p { margin-bottom: 14px; }
a { color: var(--color-gold-deep); text-decoration: underline; }
strong { color: #1a1a1a; }
em { color: var(--color-text-soft); }

/* ----- CARDS ----- */
.card {
  background: var(--color-card);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 2px 8px var(--color-shadow);
}

.card-soft {
  background: var(--color-bg-soft);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 16px;
  border-left: 3px solid var(--color-gold);
}

/* ----- GOLD QUOTE ----- */
.gold-quote {
  background: linear-gradient(135deg, #fef9e7 0%, #f5e8a0 100%);
  border-left: 4px solid var(--color-gold-deep);
  padding: 16px 20px;
  margin: 20px 0;
  border-radius: 6px;
  font-style: italic;
  font-size: 16px;
  color: #4a3a0a;
}

/* ----- TABLE ----- */
.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 16px 0;
  border-radius: 8px;
  box-shadow: 0 1px 4px var(--color-shadow);
}

table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  font-size: 14px;
  min-width: 500px;
}

thead {
  background: #2c2c2c;
  color: white;
}

th {
  padding: 10px 12px;
  text-align: left;
  font-weight: 600;
  font-size: 13px;
  border-bottom: 2px solid var(--color-gold);
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  transition: background 0.2s;
}

th:hover { background: #3a3a3a; }
th.sortable::after { content: " ⇅"; opacity: 0.4; font-size: 11px; }
th.sort-asc::after { content: " ↑"; opacity: 1; color: var(--color-gold); }
th.sort-desc::after { content: " ↓"; opacity: 1; color: var(--color-gold); }

td {
  padding: 10px 12px;
  border-bottom: 1px solid #eee;
  vertical-align: top;
}

tr:hover td { background: #fafaf7; }
td.center { text-align: center; font-size: 18px; }

.score-yes { color: #2d6a4f; font-weight: 600; }
.score-partial { color: #c97f00; font-weight: 600; }
.score-no { color: #a04040; font-weight: 600; }

/* ----- TOOLTIP ----- */
[data-tip] {
  position: relative;
  cursor: help;
  border-bottom: 1px dotted var(--color-text-muted);
}

[data-tip]:hover::after {
  content: attr(data-tip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: #2c2c2c;
  color: white;
  padding: 6px 10px;
  border-radius: 4px;
  font-size: 12px;
  white-space: normal;
  width: max-content;
  max-width: 240px;
  z-index: 200;
  margin-bottom: 4px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

/* ----- RANKING CARDS ----- */
.rank-list {
  display: grid;
  gap: 16px;
  margin: 20px 0;
}

.rank-card {
  background: white;
  border-radius: 12px;
  padding: 18px;
  box-shadow: 0 2px 8px var(--color-shadow);
  border-left: 6px solid var(--color-gold);
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 16px;
  align-items: start;
}

.rank-number {
  font-size: 42px;
  font-weight: 800;
  color: var(--color-gold);
  line-height: 1;
  text-align: center;
}

.rank-content h3 { margin-top: 0; margin-bottom: 8px; }

.rank-content p {
  font-size: 14px;
  color: var(--color-text-soft);
  margin-bottom: 6px;
}

.rank-content .rank-link {
  display: inline-block;
  margin-top: 8px;
  padding: 6px 14px;
  background: var(--color-gold);
  color: #2c2c2c;
  text-decoration: none;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
}

.rank-card[data-rank="1"] { border-left-color: var(--accent-cung-dinh); }
.rank-card[data-rank="1"] .rank-number { color: var(--accent-cung-dinh); }
.rank-card[data-rank="2"] { border-left-color: var(--accent-bhutan); }
.rank-card[data-rank="2"] .rank-number { color: var(--accent-bhutan); }
.rank-card[data-rank="3"] { border-left-color: var(--accent-tay-tang); }
.rank-card[data-rank="3"] .rank-number { color: var(--accent-tay-tang); }
.rank-card[data-rank="4"] { border-left-color: var(--accent-tram-ngoc); }
.rank-card[data-rank="4"] .rank-number { color: var(--accent-tram-ngoc); }

/* ----- PRODUCT LINE GRID ----- */
.product-line-grid {
  display: grid;
  gap: 16px;
  margin: 16px 0;
}

.product-line-card {
  background: white;
  border-radius: 10px;
  padding: 16px;
  box-shadow: 0 1px 4px var(--color-shadow);
  border-top: 4px solid var(--color-gold);
}

.product-line-card h3 {
  margin-top: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.tier-badge {
  display: inline-block;
  background: var(--color-gold);
  color: #2c2c2c;
  font-size: 12px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 12px;
  margin-left: auto;
}

.sku-list {
  list-style: none;
  margin-top: 10px;
}

.sku-list li {
  padding: 8px 0;
  border-bottom: 1px dashed #eee;
  font-size: 14px;
}

.sku-list li:last-child { border-bottom: none; }

.sku-name { font-weight: 600; color: var(--color-text); }

.sku-price {
  color: var(--color-gold-deep);
  font-weight: 600;
  font-size: 13px;
}

.stone-badge {
  display: inline-block;
  background: #ede8d8;
  color: #5a4a1a;
  font-size: 11px;
  font-weight: 600;
  padding: 1px 8px;
  border-radius: 8px;
  margin-left: 4px;
}

/* ----- PROS / CONS ----- */
.pros-cons-grid {
  display: grid;
  gap: 16px;
  margin: 20px 0;
}

.pros-box, .cons-box, .conditions-box {
  background: white;
  border-radius: 10px;
  padding: 16px;
  box-shadow: 0 1px 4px var(--color-shadow);
}

.pros-box { border-top: 4px solid #2d6a4f; }
.cons-box { border-top: 4px solid #a04040; }
.conditions-box { border-top: 4px solid var(--color-gold-deep); }

.pros-box h3, .cons-box h3, .conditions-box h3 { margin-top: 0; }

.pros-box ul, .cons-box ul, .conditions-box ul {
  list-style: none;
  padding-left: 0;
}

.pros-box li, .cons-box li, .conditions-box li {
  padding: 6px 0 6px 24px;
  position: relative;
  font-size: 14px;
  line-height: 1.6;
}

.pros-box li::before { content: "✓"; position: absolute; left: 0; color: #2d6a4f; font-weight: 700; }
.cons-box li::before { content: "✗"; position: absolute; left: 0; color: #a04040; font-weight: 700; }
.conditions-box li::before { content: "▸"; position: absolute; left: 0; color: var(--color-gold-deep); font-weight: 700; }

/* ----- ROADMAP TIMELINE (mới) ----- */
.roadmap-timeline {
  display: grid;
  gap: 16px;
  margin: 20px 0;
}

.roadmap-year {
  background: white;
  border-radius: 12px;
  padding: 18px;
  box-shadow: 0 2px 8px var(--color-shadow);
  border-left: 5px solid var(--color-gold);
  position: relative;
}

.roadmap-year-label {
  display: inline-block;
  background: var(--color-gold);
  color: #2c2c2c;
  font-weight: 700;
  font-size: 13px;
  padding: 4px 12px;
  border-radius: 12px;
  margin-bottom: 10px;
  letter-spacing: 0.5px;
}

.roadmap-year h3 {
  margin-top: 0;
  font-size: 17px;
}

.roadmap-year ul {
  list-style: none;
  padding-left: 0;
}

.roadmap-year li {
  padding: 6px 0 6px 22px;
  position: relative;
  font-size: 14px;
  line-height: 1.6;
}

.roadmap-year li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--color-gold-deep);
  font-weight: 700;
}

/* ----- COMPETITOR BADGES ----- */
.competitor-badge {
  display: inline-block;
  padding: 3px 10px;
  background: var(--color-bg-soft);
  border: 1px solid var(--color-gold);
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text);
  margin: 2px;
  text-decoration: none;
}

a.competitor-badge:hover {
  background: var(--color-gold);
  color: white;
}

/* ----- BOTTOM NAV ----- */
.bottom-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 32px 0 24px;
}

.bottom-nav-item {
  background: white;
  padding: 14px;
  border-radius: 8px;
  text-decoration: none;
  color: var(--color-text);
  box-shadow: 0 1px 4px var(--color-shadow);
  border: 1px solid #eee;
}

.bottom-nav-item:hover {
  background: var(--color-bg-soft);
  border-color: var(--color-gold);
}

.bottom-nav-label {
  display: block;
  font-size: 11px;
  color: var(--color-text-muted);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.bottom-nav-title {
  display: block;
  font-weight: 600;
  font-size: 14px;
  color: var(--color-gold-deep);
}

.bottom-nav-item.next { text-align: right; }

/* ----- CHART CONTAINER ----- */
.chart-container {
  background: white;
  border-radius: 12px;
  padding: 16px;
  margin: 20px 0;
  box-shadow: 0 2px 8px var(--color-shadow);
}

.chart-container canvas {
  max-width: 100%;
  height: auto !important;
}

/* ============================================================
   CONCEPT-SPECIFIC STYLING - rõ rệt hơn
   ============================================================ */

/* === CUNG ĐÌNH TQ - Đỏ son hoàng gia === */
body.concept-cung-dinh {
  background: #fdf8f6;
}

body.concept-cung-dinh .topnav {
  background: var(--accent-cung-dinh-deep);
}

body.concept-cung-dinh .topnav-brand {
  color: #f5b8a8;
}

body.concept-cung-dinh h1,
body.concept-cung-dinh h2,
body.concept-cung-dinh h3 {
  color: var(--accent-cung-dinh-deep);
}

body.concept-cung-dinh h2 {
  border-top-color: var(--accent-cung-dinh);
}

body.concept-cung-dinh .card {
  background: linear-gradient(180deg, var(--accent-cung-dinh-soft) 0%, white 100%);
  border-top: 4px solid var(--accent-cung-dinh);
}

body.concept-cung-dinh .gold-quote {
  background: linear-gradient(135deg, #fff5f3 0%, #fde0d8 100%);
  border-left-color: var(--accent-cung-dinh);
  color: var(--accent-cung-dinh-deep);
}

body.concept-cung-dinh .tier-badge {
  background: var(--accent-cung-dinh);
  color: white;
}

body.concept-cung-dinh .roadmap-year-label {
  background: var(--accent-cung-dinh);
  color: white;
}

body.concept-cung-dinh .roadmap-year {
  border-left-color: var(--accent-cung-dinh);
}

body.concept-cung-dinh .roadmap-year li::before {
  color: var(--accent-cung-dinh);
}

/* === BHUTAN - Xanh turquoise + cam === */
body.concept-bhutan {
  background: #f6fbfd;
}

body.concept-bhutan .topnav {
  background: var(--accent-bhutan-deep);
}

body.concept-bhutan .topnav-brand {
  color: #8cc8d8;
}

body.concept-bhutan h1,
body.concept-bhutan h2,
body.concept-bhutan h3 {
  color: var(--accent-bhutan-deep);
}

body.concept-bhutan h2 {
  border-top-color: var(--accent-bhutan);
}

body.concept-bhutan .card {
  background: linear-gradient(180deg, var(--accent-bhutan-soft) 0%, white 100%);
  border-top: 4px solid var(--accent-bhutan);
}

body.concept-bhutan .gold-quote {
  background: linear-gradient(135deg, #ebf5fa 0%, #d0e8f0 100%);
  border-left-color: var(--accent-bhutan);
  color: var(--accent-bhutan-deep);
}

body.concept-bhutan .tier-badge {
  background: var(--accent-bhutan);
  color: white;
}

body.concept-bhutan .roadmap-year-label {
  background: var(--accent-bhutan);
  color: white;
}

body.concept-bhutan .roadmap-year {
  border-left-color: var(--accent-bhutan);
}

body.concept-bhutan .roadmap-year li::before {
  color: var(--accent-bhutan);
}

/* === TÂY TẠNG - Nâu đất + vàng nến === */
body.concept-tay-tang {
  background: #faf5ed;
}

body.concept-tay-tang .topnav {
  background: var(--accent-tay-tang-deep);
}

body.concept-tay-tang .topnav-brand {
  color: #c4a888;
}

body.concept-tay-tang h1,
body.concept-tay-tang h2,
body.concept-tay-tang h3 {
  color: var(--accent-tay-tang-deep);
}

body.concept-tay-tang h2 {
  border-top-color: var(--accent-tay-tang);
}

body.concept-tay-tang .card {
  background: linear-gradient(180deg, var(--accent-tay-tang-soft) 0%, white 100%);
  border-top: 4px solid var(--accent-tay-tang);
}

body.concept-tay-tang .gold-quote {
  background: linear-gradient(135deg, #f5ede0 0%, #ead8c0 100%);
  border-left-color: var(--accent-tay-tang);
  color: var(--accent-tay-tang-deep);
}

body.concept-tay-tang .tier-badge {
  background: var(--accent-tay-tang);
  color: white;
}

body.concept-tay-tang .roadmap-year-label {
  background: var(--accent-tay-tang);
  color: white;
}

body.concept-tay-tang .roadmap-year {
  border-left-color: var(--accent-tay-tang);
}

body.concept-tay-tang .roadmap-year li::before {
  color: var(--accent-tay-tang);
}

/* === TRẦM-NGỌC VN - Xanh ngọc trầm === */
body.concept-tram-ngoc {
  background: #f4f9f6;
}

body.concept-tram-ngoc .topnav {
  background: var(--accent-tram-ngoc-deep);
}

body.concept-tram-ngoc .topnav-brand {
  color: #95c4ad;
}

body.concept-tram-ngoc h1,
body.concept-tram-ngoc h2,
body.concept-tram-ngoc h3 {
  color: var(--accent-tram-ngoc-deep);
}

body.concept-tram-ngoc h2 {
  border-top-color: var(--accent-tram-ngoc);
}

body.concept-tram-ngoc .card {
  background: linear-gradient(180deg, var(--accent-tram-ngoc-soft) 0%, white 100%);
  border-top: 4px solid var(--accent-tram-ngoc);
}

body.concept-tram-ngoc .gold-quote {
  background: linear-gradient(135deg, #edf3f0 0%, #d8e8e0 100%);
  border-left-color: var(--accent-tram-ngoc);
  color: var(--accent-tram-ngoc-deep);
}

body.concept-tram-ngoc .tier-badge {
  background: var(--accent-tram-ngoc);
  color: white;
}

body.concept-tram-ngoc .roadmap-year-label {
  background: var(--accent-tram-ngoc);
  color: white;
}

body.concept-tram-ngoc .roadmap-year {
  border-left-color: var(--accent-tram-ngoc);
}

body.concept-tram-ngoc .roadmap-year li::before {
  color: var(--accent-tram-ngoc);
}

/* ============================================================
   TABLET (>= 600px)
   ============================================================ */
@media (min-width: 600px) {
  .container { padding: 24px; }
  
  h1 { font-size: 30px; }
  h2 { font-size: 24px; }
  h3 { font-size: 19px; }
  
  .hero-banner { height: 360px; }
  .hero-text h1 { font-size: 36px; }
  .hero-text .hero-subtitle { font-size: 17px; }
  
  .product-line-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .pros-cons-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .conditions-box {
    grid-column: 1 / -1;
  }
  
  .roadmap-timeline {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .topnav-links { font-size: 14px; }
  
  .rank-card {
    grid-template-columns: 80px 1fr;
  }
  
  .rank-number { font-size: 56px; }
}

/* ============================================================
   DESKTOP (>= 900px)
   ============================================================ */
@media (min-width: 900px) {
  .container { padding: 32px 24px; }
  h1 { font-size: 34px; }
  h2 { font-size: 26px; }
  
  .hero-banner { height: 420px; }
  .hero-text h1 { font-size: 44px; }
  
  table { font-size: 15px; }
  th, td { padding: 12px 16px; }
}

@media print {
  .topnav, .bottom-nav { display: none; }
  body { background: white; }
  .card { box-shadow: none; border: 1px solid #ccc; }
  .hero-banner { page-break-inside: avoid; }
}