/* ==========================================================================
   SENTRA BATIK — PRODUCTION STYLESHEET
   Archetype: name-as-monument / place-carries-it (Heritage Canting Tapestry)
   Anti-slop compliant: Zero resting shadows, zero hairlines, zero gradients
   ========================================================================== */

:root {
  --bg-primary: #120e0b;
  --bg-surface: #1c1612;
  --bg-surface-elevated: #28201a;
  --bg-parchment: #f6efe6;
  --bg-parchment-soft: #ede4d6;
  
  --text-primary: #f6efe6;
  --text-muted: #bda994;
  --text-dark: #120e0b;
  --text-dark-muted: #645648;
  
  --accent-gold: #c9933b;
  --accent-gold-hover: #dfa84f;
  --accent-indigo: #243c53;
  --accent-crimson: #6d2424;
  
  --font-serif: 'Cinzel', serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;
  
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  
  --container-max: 1240px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

body {
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.68;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
}

/* Typography Standards */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

h2 {
  font-size: clamp(1.6rem, 3.8vw, 2.4rem);
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

h3 {
  font-size: 1.3rem;
  color: var(--accent-gold);
  margin-bottom: var(--space-xs);
}

p {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 68ch;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Container */
.container {
  width: 90%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
}

/* Header & Top Bar */
.top-notice {
  background-color: var(--bg-surface);
  padding: 0.6rem 0;
  text-align: center;
}

.top-notice p {
  margin: 0 auto;
  font-size: 0.88rem;
  color: var(--accent-gold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
}

.site-header {
  background-color: var(--bg-primary);
  padding: var(--space-md) 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.brand-monument {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.brand-monument span {
  color: var(--accent-gold);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.6rem;
}

.site-nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--accent-gold);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.menu-toggle {
  display: none;
  background: var(--bg-surface);
  border: none;
  color: var(--text-primary);
  padding: 0.6rem 0.9rem;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  letter-spacing: 0.05em;
}

/* Button & Action Elements */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  background-color: var(--accent-gold);
  color: var(--text-dark);
  padding: 0.9rem 1.6rem;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  border: none;
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.btn-primary:hover {
  background-color: var(--accent-gold-hover);
  transform: translateY(-2px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  background-color: var(--bg-surface-elevated);
  color: var(--text-primary);
  padding: 0.9rem 1.6rem;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  border: none;
  transition: background-color 0.2s ease;
}

.btn-secondary:hover {
  background-color: var(--accent-gold);
  color: var(--text-dark);
}

/* Hero: Tapestry Split */
.hero-tapestry {
  padding: var(--space-2xl) 0 var(--space-xl);
  background-color: var(--bg-primary);
}

.tapestry-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: var(--space-xl);
  align-items: center;
}

.hero-statement h1 {
  margin-bottom: var(--space-md);
}

.hero-statement p.lead {
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: var(--space-xl);
}

.provenance-pills {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
  background-color: var(--bg-surface);
  padding: var(--space-md);
}

.p-pill strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--accent-gold);
  margin-bottom: 0.2rem;
}

.p-pill span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.hero-visual {
  position: relative;
  background-color: var(--bg-surface);
}

.hero-visual img {
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
}

.hero-caption {
  padding: var(--space-sm) var(--space-md);
  background-color: var(--bg-surface-elevated);
  font-size: 0.88rem;
  color: var(--text-muted);
}

.hero-caption strong {
  color: var(--accent-gold);
}

/* Monument Banner Section */
.monument-strip {
  background-color: var(--bg-surface);
  padding: var(--space-xl) 0;
  text-align: center;
}

.monument-text {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent-gold);
  margin-bottom: var(--space-sm);
}

.monument-sub {
  font-size: 1.1rem;
  color: var(--text-primary);
  max-width: 60ch;
  margin: 0 auto;
}

/* Micro-tool: Lexicon & Wax Penetration Tester */
.tool-section {
  padding: var(--space-2xl) 0;
  background-color: var(--bg-surface);
}

.tool-wrapper {
  background-color: var(--bg-primary);
  padding: var(--space-xl);
}

.tool-header {
  margin-bottom: var(--space-lg);
}

.tool-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-xl);
}

.tool-form-group {
  margin-bottom: var(--space-md);
}

.tool-form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: 0.4rem;
}

.tool-select {
  width: 100%;
  padding: 0.9rem 1rem;
  background-color: var(--bg-surface-elevated);
  color: var(--text-primary);
  border: none;
  font-size: 1rem;
  font-family: var(--font-body);
}

.tool-select:focus {
  outline: 2px solid var(--accent-gold);
}

.tool-result-panel {
  background-color: var(--bg-surface);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.result-card-heading {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--accent-gold);
  margin-bottom: 0.4rem;
}

.result-phil {
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  font-style: italic;
}

.result-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  background-color: var(--bg-primary);
  padding: var(--space-md);
}

.metric-item strong {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.metric-item span {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--accent-gold);
}

/* Specimen Grid */
.section-specimens {
  padding: var(--space-2xl) 0;
}

.section-head {
  margin-bottom: var(--space-xl);
}

.specimen-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.specimen-card {
  background-color: var(--bg-surface);
  display: flex;
  flex-direction: column;
}

.specimen-media {
  position: relative;
  aspect-ratio: 4/5;
  background-color: var(--bg-surface-elevated);
  overflow: hidden;
}

.specimen-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.specimen-card:hover .specimen-media img {
  transform: scale(1.04);
}

.specimen-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background-color: var(--accent-gold);
  color: var(--text-dark);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 0.35rem 0.7rem;
  letter-spacing: 0.05em;
}

.specimen-body {
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.specimen-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.specimen-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
  flex-grow: 1;
}

.specimen-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-sm);
  background-color: var(--bg-surface-elevated);
  padding: var(--space-sm) var(--space-md);
}

.specimen-price {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent-gold);
}

.specimen-time {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* 4 Stages Living Wax Section */
.stages-section {
  padding: var(--space-2xl) 0;
  background-color: var(--bg-surface);
}

.stages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.stage-card {
  background-color: var(--bg-primary);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
}

.stage-label {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  color: var(--accent-gold);
  margin-bottom: var(--space-xs);
  letter-spacing: 0.1em;
}

.stage-name {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.stage-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
}

/* Split Content Section (Story & Craft) */
.story-section {
  padding: var(--space-2xl) 0;
}

.story-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.story-image img {
  width: 100%;
  aspect-ratio: 16/11;
  object-fit: cover;
}

.story-content h2 {
  margin-bottom: var(--space-md);
}

.story-content p {
  margin-bottom: var(--space-md);
}

/* FAQ Grid */
.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.faq-item {
  background-color: var(--bg-surface);
  padding: var(--space-lg);
}

.faq-q {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--accent-gold);
  margin-bottom: var(--space-xs);
}

.faq-a {
  font-size: 0.98rem;
  color: var(--text-muted);
}

/* Contact / Studio Layout */
.studio-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-xl);
}

.studio-info {
  background-color: var(--bg-surface);
  padding: var(--space-xl);
}

.studio-item {
  margin-bottom: var(--space-md);
}

.studio-item h3 {
  font-size: 1rem;
  margin-bottom: 0.3rem;
}

.studio-form-card {
  background-color: var(--bg-surface-elevated);
  padding: var(--space-xl);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-gold);
  margin-bottom: 0.3rem;
}

.form-control {
  width: 100%;
  padding: 0.9rem 1rem;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  border: none;
  font-family: var(--font-body);
  font-size: 1rem;
}

.form-control:focus {
  outline: 2px solid var(--accent-gold);
}

textarea.form-control {
  min-height: 110px;
  resize: vertical;
}

/* Footer */
.site-footer {
  background-color: #0c0907;
  padding: var(--space-2xl) 0 var(--space-lg);
  margin-top: var(--space-2xl);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer-brand h3 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.footer-brand p {
  font-size: 0.92rem;
  color: var(--text-muted);
}

.footer-col h4 {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--accent-gold);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.08em;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  font-size: 0.92rem;
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--accent-gold);
}

.footer-bottom {
  padding-top: var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-credits {
  font-size: 0.8rem;
  color: #7a6e60;
  max-width: 60ch;
}

/* Responsive Adaptations */
@media (max-width: 1024px) {
  .tapestry-grid,
  .tool-grid,
  .story-split,
  .studio-layout {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .specimen-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stages-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-top {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--bg-surface);
    flex-direction: column;
    padding: var(--space-md);
    gap: 1rem;
  }

  .site-nav.is-open {
    display: flex;
  }

  .specimen-grid,
  .stages-grid,
  .faq-grid,
  .provenance-pills {
    grid-template-columns: 1fr;
  }

  .footer-top {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}