/* ===================================================
   porcelain.css — Porcelain Page Specific Styles
   Inherits design tokens from styles.css
   =================================================== */

/* ===== Porcelain Hero ===== */
.porcelain-hero {
  background: linear-gradient(135deg, #f5f0e8 0%, #e8e0d0 30%, #d8d0c0 60%, #c8c0b0 100%);
  color: var(--color-ink);
}

.porcelain-hero::before {
  background:
    radial-gradient(circle at 20% 40%, rgba(100,140,180,0.12) 0%, transparent 50%),
    radial-gradient(circle at 80% 60%, rgba(180,100,100,0.08) 0%, transparent 40%);
}

.porcelain-hero h1 {
  color: var(--color-ink);
}

.porcelain-hero .subtitle {
  color: #5a7a9a;
}

.porcelain-hero .lead {
  color: var(--color-text-secondary);
}

.porcelain-hero .hero-cta {
  background: #5a7a9a;
  box-shadow: 0 4px 20px rgba(90,122,154,0.3);
}

.porcelain-hero .hero-cta:hover {
  background: #4a6a8a;
  box-shadow: 0 6px 28px rgba(90,122,154,0.4);
}

/* ===== Section Spacing ===== */
.porcelain-section {
  padding: 4rem 0;
}

.porcelain-section + .porcelain-section {
  border-top: 1px solid var(--color-border);
}

/* ===== Name Story Section ===== */
.name-story {
  max-width: 900px;
  margin: 0 auto 3rem;
}

.clarification-box {
  display: flex;
  align-items: flex-start;
  gap: 1.2rem;
  background: linear-gradient(135deg, #fdf6e3, #fef9ee);
  border-radius: var(--radius);
  padding: 1.5rem 2rem;
  border-left: 4px solid #e6a817;
  margin-bottom: 2.5rem;
}

.clarification-icon {
  font-size: 2rem;
  flex-shrink: 0;
}

.clarification-box h4 {
  color: #b8860b;
  margin-bottom: 0.5em;
  font-size: 1rem;
}

.clarification-box p {
  color: var(--color-text-secondary);
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.7;
}

.name-body {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--color-text-secondary);
  max-width: 860px;
  margin: 0 auto;
}

/* ===== Etymology Flow ===== */
.etymology-flow {
  margin-bottom: 2.5rem;
}

.etymology-flow h3 {
  text-align: center;
  margin-bottom: 1.5rem;
  font-size: 1.2rem;
}

.etymology-path {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1.5rem;
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.etym-step {
  text-align: center;
  min-width: 120px;
  flex-shrink: 0;
}

.etym-word {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--color-ink);
  margin-bottom: 0.4rem;
}

.etym-desc {
  font-size: 0.78rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  max-width: 160px;
  margin: 0 auto;
}

.etym-arrow {
  font-size: 1.3rem;
  color: #5a7a9a;
  font-weight: 700;
  flex-shrink: 0;
}

/* ===== Porcelain Timeline ===== */
.porcelain-timeline {
  margin-top: 3rem;
}

.porcelain-timeline h3 {
  text-align: center;
  font-size: 1.4rem;
  margin-bottom: 2.5rem;
}

/* ===== Science Section ===== */
.science-section {
  background: var(--color-surface);
}

/* ===== Pottery vs Porcelain Comparison ===== */
.comparison-block {
  max-width: 900px;
  margin: 0 auto 3rem;
}

.comparison-visual {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1.5rem;
  align-items: stretch;
}

.comp-item {
  background: var(--color-bg);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  text-align: center;
}

.comp-icon {
  font-size: 3rem;
  margin-bottom: 0.8rem;
}

.comp-item h4 {
  font-size: 1.15rem;
  margin-bottom: 1.2rem;
}

.comp-pottery h4 { color: #a07050; }
.comp-porcelain h4 { color: #5a7a9a; }

.comp-specs {
  text-align: left;
}

.spec-row {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
}

.spec-row:last-child { border-bottom: none; }

.spec-label {
  font-weight: 600;
  color: var(--color-ink);
}

.spec-value {
  color: var(--color-text-secondary);
  text-align: right;
}

.comp-vs {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-gold);
  align-self: center;
}

/* ===== Kaolin Story ===== */
.kaolin-story {
  max-width: 900px;
  margin: 0 auto 3rem;
}

.kaolin-header {
  display: flex;
  align-items: flex-start;
  gap: 1.2rem;
  margin-bottom: 1.5rem;
}

.kaolin-icon {
  font-size: 2.5rem;
  flex-shrink: 0;
}

.kaolin-header h3 {
  font-size: 1.3rem;
  margin-bottom: 0.3rem;
}

.kaolin-subtitle {
  color: #5a7a9a;
  font-size: 0.95rem;
  margin: 0;
}

.kaolin-body p {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--color-text-secondary);
}

/* ===== Temperature Challenge ===== */
.temp-challenge {
  max-width: 900px;
  margin: 0 auto;
}

.temp-challenge h3 {
  text-align: center;
  margin-bottom: 1.5rem;
}

.temp-bar {
  display: flex;
  gap: 0;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  height: 80px;
}

.temp-segment {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.temp-pottery {
  background: linear-gradient(135deg, #d4b896, #c4a880);
  flex: 1.1;
}

.temp-porcelain {
  background: linear-gradient(135deg, #7a9ab8, #5a7a9a);
  flex: 1.4;
  color: #fff;
}

.temp-label {
  font-weight: 700;
  font-size: 0.9rem;
}

.temp-pottery .temp-label { color: #5a3a1a; }

.temp-range {
  font-size: 0.85rem;
  opacity: 0.8;
  margin-top: 0.2rem;
}

.temp-note {
  text-align: center;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  margin-top: 1rem;
  line-height: 1.7;
}

/* ===== Dynasty Blocks ===== */
.dynasty-block {
  max-width: 960px;
  margin: 0 auto 3rem;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--color-surface);
}

.dynasty-block:last-child { margin-bottom: 0; }

.dynasty-header {
  padding: 1.5rem 2rem;
  position: relative;
}

.dynasty-badge {
  display: inline-block;
  background: rgba(0,0,0,0.15);
  color: #fff;
  padding: 0.2rem 0.8rem;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
  letter-spacing: 0.03em;
}

.dynasty-header h3 {
  color: #fff;
  font-size: 1.3rem;
}

.dynasty-tang { background: linear-gradient(135deg, #b87333, #a06020); }
.dynasty-song { background: linear-gradient(135deg, #6a8a7a, #507060); }
.dynasty-yuan { background: linear-gradient(135deg, #4a6a8a, #3a5a7a); }
.dynasty-ming { background: linear-gradient(135deg, #8a3a3a, #7a2a2a); }
.dynasty-qing { background: linear-gradient(135deg, #6a5a8a, #5a4a7a); }

.dynasty-body {
  padding: 2rem;
}

.dynasty-content p {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--color-text-secondary);
}

.dynasty-content ul {
  margin: 1em 0 1.5em 1.5em;
  line-height: 1.8;
}

.dynasty-content li {
  margin-bottom: 0.6em;
  color: var(--color-text-secondary);
}

/* ===== Kilns Grid ===== */
.kilns-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.2rem;
  margin-top: 1.5rem;
}

.kiln-card {
  background: var(--color-bg);
  border-radius: var(--radius);
  padding: 1.2rem;
  text-align: center;
  transition: all var(--transition);
}

.kiln-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.kiln-color {
  height: 50px;
  border-radius: 8px;
  margin-bottom: 0.8rem;
}

.kiln-card h4 {
  font-size: 1rem;
  margin-bottom: 0.4rem;
}

.kiln-card p {
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  margin: 0;
  line-height: 1.6;
}

/* ===== Feature Cards ===== */
.dynasty-feature {
  margin-top: 1.5rem;
}

.feature-card {
  background: var(--color-bg);
  border-radius: var(--radius);
  padding: 1.5rem;
  border-left: 4px solid var(--color-gold);
}

.feature-highlight {
  background: linear-gradient(135deg, #e8f0f8, #f0f4f8);
  border-left-color: #5a7a9a;
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.feature-card h4 {
  font-size: 1.05rem;
  margin-bottom: 0.5em;
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  margin: 0;
  line-height: 1.8;
}

/* ===== Global Section ===== */
.global-section {
  background: var(--color-surface);
}

.global-intro {
  max-width: 860px;
  margin: 0 auto 2.5rem;
}

.global-intro p {
  font-size: 1.1rem;
  line-height: 1.9;
  color: var(--color-text-secondary);
  text-align: center;
}

/* ===== VOC Stats ===== */
.voc-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
}

.voc-stat {
  text-align: center;
  padding: 1rem;
  background: var(--color-bg);
  border-radius: var(--radius);
}

.stat-number {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.8rem;
  color: #5a7a9a;
  margin-bottom: 0.3rem;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* ===== Imitation Grid ===== */
.imitation-story {
  margin: 3rem 0;
}

.imitation-story h3 {
  text-align: center;
  margin-bottom: 2rem;
  font-size: 1.3rem;
}

.imitation-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.2rem;
}

.imitation-card {
  background: var(--color-bg);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  transition: all var(--transition);
  border-top: 3px solid var(--color-border);
}

.imitation-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.imitation-highlight {
  border-top-color: #5a7a9a;
  background: linear-gradient(135deg, #f0f4f8, #e8f0f8);
}

.imitation-year {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.5rem;
  color: #5a7a9a;
  margin-bottom: 0.5rem;
}

.imitation-card h4 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.imitation-card p {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  margin: 0;
  line-height: 1.6;
}

/* ===== Chinoiserie & Reverse Blocks ===== */
.chinoiserie-block,
.reverse-block {
  max-width: 860px;
  margin: 0 auto 2.5rem;
}

.chinoiserie-block h3,
.reverse-block h3 {
  font-size: 1.2rem;
  margin-bottom: 1rem;
}

.chinoiserie-block p,
.reverse-block p {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--color-text-secondary);
}

.reverse-block {
  margin-bottom: 0;
}

/* ===== Tech Grid ===== */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  max-width: 960px;
  margin: 0 auto;
}

.tech-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  border-top: 4px solid #5a7a9a;
}

.tech-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.tech-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.tech-card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.8rem;
}

.tech-card p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin: 0;
}

/* ===== Treasures Section ===== */
.treasures-section {
  background: var(--color-bg);
}

.treasures-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.treasure-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all var(--transition);
}

.treasure-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.treasure-header {
  padding: 2rem;
  text-align: center;
  position: relative;
}

.treasure-yuan { background: linear-gradient(135deg, #e8f0f8, #d0e0f0); }
.treasure-song { background: linear-gradient(135deg, #e0ebe4, #c8d8d0); }
.treasure-ming { background: linear-gradient(135deg, #f0e8e0, #e0d0c0); }

.treasure-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: rgba(0,0,0,0.15);
  color: #fff;
  padding: 0.2rem 0.8rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.treasure-emoji {
  font-size: 4rem;
}

.treasure-body {
  padding: 1.5rem 2rem 2rem;
}

.treasure-body h3 {
  font-size: 1.2rem;
  margin-bottom: 0.3rem;
}

.treasure-subtitle {
  color: #5a7a9a;
  font-size: 0.85rem;
  margin-bottom: 1rem;
  font-weight: 500;
}

.treasure-body p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.treasure-record {
  margin-top: 1.2rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.record-label {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-gold);
}

.record-price {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--color-accent);
}

.record-year {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

/* ===== Porcelain Quote ===== */
.porcelain-quote {
  border-left: 4px solid #5a7a9a;
  padding: 1.5rem 2rem;
  margin: 0 auto;
  background: linear-gradient(135deg, #f0f4f8, #e8f0f8);
  border-radius: 0 var(--radius) var(--radius) 0;
  max-width: 800px;
}

.porcelain-quote p {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-style: italic;
  color: var(--color-ink);
  margin: 0;
  line-height: 1.7;
}

/* ===== Highlight Box (reused from silk-road with blue tint) ===== */
.highlight-box {
  background: linear-gradient(135deg, #f0f4f8, #e8f0f8);
  border-radius: var(--radius);
  padding: 2rem 2.5rem;
  margin: 3rem 0;
  border-left: 4px solid #5a7a9a;
}

.highlight-box h4 {
  color: #5a7a9a;
  margin-bottom: 1.5rem;
  font-size: 1.2rem;
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .comparison-visual {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .comp-vs {
    text-align: center;
    font-size: 1.2rem;
  }

  .kilns-grid {
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  }
}

@media (max-width: 768px) {
  .etymology-path {
    padding: 1rem;
    gap: 0.3rem;
  }

  .etym-step { min-width: 80px; }
  .etym-word { font-size: 1.05rem; }
  .etym-desc { font-size: 0.7rem; }
  .etym-desc { display: none; }

  .voc-stats {
    grid-template-columns: 1fr;
  }

  .temp-bar {
    flex-direction: column;
    height: auto;
  }

  .temp-segment {
    padding: 0.8rem;
  }

  .treasures-grid {
    grid-template-columns: 1fr;
  }

  .tech-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .kilns-grid {
    grid-template-columns: 1fr 1fr;
  }

  .imitation-grid {
    grid-template-columns: 1fr;
  }

  .dynasty-body {
    padding: 1.5rem;
  }

  .clarification-box {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }
}

/* ===== Dark Mode ===== */
@media (prefers-color-scheme: dark) {
  .porcelain-hero {
    background: linear-gradient(135deg, #1a1816 0%, #242220 30%, #2a2826 60%, #1f1e1c 100%);
  }

  .porcelain-hero h1 { color: var(--color-ink); }
  .porcelain-hero .subtitle { color: #8ab0d0; }
  .porcelain-hero .hero-cta { background: #5a7a9a; }

  .clarification-box {
    background: linear-gradient(135deg, #2a2520, #252018);
    border-left-color: #e6a817;
  }

  .comp-item { background: var(--color-surface); }

  .temp-pottery { background: linear-gradient(135deg, #5a4030, #4a3020); }
  .temp-pottery .temp-label { color: #d4b896; }
  .temp-porcelain { background: linear-gradient(135deg, #3a5a7a, #2a4a6a); }

  .kiln-card,
  .imitation-card,
  .voc-stat { background: var(--color-surface); }

  .feature-highlight,
  .imitation-highlight {
    background: var(--color-surface);
  }

  .porcelain-quote,
  .highlight-box {
    background: var(--color-surface);
  }

  .treasure-yuan { background: linear-gradient(135deg, #2a3a4a, #1f2f3f); }
  .treasure-song { background: linear-gradient(135deg, #2a3a30, #1f2f25); }
  .treasure-ming { background: linear-gradient(135deg, #3a2a20, #2f1f15); }
}

/* ===== Print ===== */
@media print {
  .quick-nav { display: none; }
  .dynasty-block { break-inside: avoid; }
}