/* ==========================================================================
   TANAL ATELIER — DOHA, QATAR
   Bespoke Architectural Joinery, Fit-Out & Fine Woodwork Manufacturing
   Visual DNA: Sunlit Alabaster · Honed Travertine · Brushed Bronze · Smoked Walnut
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,500;0,600;1,400&family=Noto+Kufi+Arabic:wght@300;400;500;600;700&family=Plus+Jakarta+Sans:wght@300;400;500;600&display=swap');

:root {
  /* Warm Sunlit Stone Surfaces */
  --bg-alabaster: #f5f0e7;
  --bg-travertine: #ebe3d6;
  --bg-parchment: #fbf8f3;
  --bg-glass-stone: rgba(251, 248, 242, 0.88);
  --bg-glass-header: rgba(247, 242, 234, 0.86);

  /* Warm Roasted Walnut-Espresso Contrast (Never Pitch Black) */
  --bg-espresso: #241e1a;
  --bg-espresso-soft: #2e2621;
  --bg-footer: #1e1915;

  /* Architectural Ink & Stone Typography */
  --ink-primary: #1d1814;
  --ink-secondary: #584e44;
  --ink-muted: #84786b;

  /* Light Text on Espresso Sections */
  --ivory-light: #f6f1e8;
  --ivory-soft: #d9cfc1;
  --ivory-muted: #a69a8b;

  /* Brushed Champagne & Antique Bronze Accents */
  --bronze-primary: #9a7444;
  --bronze-bright: #c8a675;
  --bronze-deep: #7c5b32;

  /* Hairline Architectural Borders */
  --line-stone: rgba(36, 30, 26, 0.11);
  --line-stone-strong: rgba(36, 30, 26, 0.22);
  --line-bronze: rgba(154, 116, 68, 0.36);
  --line-light: rgba(246, 241, 232, 0.14);

  --shadow-soft: 0 20px 52px rgba(29, 24, 20, 0.09);
  --shadow-card: 0 14px 36px rgba(29, 24, 20, 0.07);

  --font-serif: 'Cormorant Garamond', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-ar: 'Noto Kufi Arabic', 'Plus Jakarta Sans', sans-serif;

  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  background-color: var(--bg-alabaster);
  color: var(--ink-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-alabaster);
  color: var(--ink-primary);
  font-family: var(--font-ar);
  line-height: 1.65;
  overflow-x: hidden;
}

html[lang="en"] body {
  font-family: var(--font-sans);
}

::selection {
  background: var(--bronze-primary);
  color: var(--ivory-light);
}

/* Bilingual visibility utility */
html[lang="ar"] [data-lang="en"] { display: none !important; }
html[lang="en"] [data-lang="ar"] { display: none !important; }

/* Custom Warm Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-travertine); }
::-webkit-scrollbar-thumb { background: rgba(154, 116, 68, 0.45); }
::-webkit-scrollbar-thumb:hover { background: var(--bronze-primary); }

/* ==========================================================================
   SUNLIT ARCHITECTURAL PRELOADER CURTAIN
   ========================================================================== */
.preloader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--bg-alabaster);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: opacity 0.45s var(--ease-out-expo), visibility 0.45s;
}
.preloader.is-loaded {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  display: none !important;
}
.preloader-brand {
  text-align: center;
  margin-bottom: 28px;
}
.preloader-seal {
  width: 76px;
  height: 76px;
  margin: 0 auto 18px;
  padding: 3px;
  border: 1px solid var(--line-bronze);
  background: #141312;
  box-shadow: var(--shadow-card);
}
.preloader-logo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.preloader-wordmark {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--ink-primary);
}
.preloader-bar-wrap {
  width: 220px;
  height: 1.5px;
  background: rgba(36, 30, 26, 0.12);
  position: relative;
  overflow: hidden;
}
.preloader-bar {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 0%;
  background: var(--bronze-primary);
  transition: width 0.25s ease-out;
}
.preloader-meta {
  margin-top: 14px;
  font-family: var(--font-sans);
  font-size: 10px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

/* ==========================================================================
   FIXED FULL-VIEWPORT WEBGL 3D STAGE
   ========================================================================== */
.webgl-stage {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
}
.webgl-stage.is-interactive-mode {
  pointer-events: auto;
  cursor: grab;
}
.webgl-stage.is-interactive-mode:active {
  cursor: grabbing;
}
#tanal-webgl-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Gentle sunlit top atmospheric glaze — ZERO dark black vignette */
.cinematic-vignette {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(245, 240, 231, 0.42) 0%, transparent 14%, transparent 88%, rgba(235, 227, 214, 0.28) 100%);
  transition: opacity 0.5s ease;
}
body.is-evening-stage .cinematic-vignette {
  background: linear-gradient(180deg, rgba(28, 22, 18, 0.42) 0%, transparent 16%, transparent 85%, rgba(28, 22, 18, 0.38) 100%);
}

/* 3D Projected SVG Engineering Callouts Overlay (Strictly Scoped to #atelier) */
.engineering-svg-layer {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 24;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s;
}
.engineering-svg-layer.is-visible {
  opacity: 1;
  visibility: visible;
}
.callout-pin-card {
  position: fixed;
  z-index: 25;
  pointer-events: none;
  background: rgba(251, 248, 242, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--line-bronze);
  box-shadow: var(--shadow-card);
  padding: 11px 15px;
  max-width: 245px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity 0.35s ease, transform 0.35s ease, visibility 0.35s;
}
body.is-evening-stage .callout-pin-card {
  background: rgba(34, 28, 23, 0.9);
  border-color: rgba(200, 166, 117, 0.45);
}
.callout-pin-card.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.callout-code {
  font-family: var(--font-sans);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--bronze-primary);
  display: block;
  margin-bottom: 3px;
  direction: ltr;
  unicode-bidi: isolate;
}
body.is-evening-stage .callout-code { color: var(--bronze-bright); }
.callout-title {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink-primary);
  margin-bottom: 3px;
}
body.is-evening-stage .callout-title { color: var(--ivory-light); }
.callout-sub {
  font-size: 11px;
  color: var(--ink-secondary);
  line-height: 1.48;
}
body.is-evening-stage .callout-sub { color: var(--ivory-soft); }

/* ==========================================================================
   TOP ARCHITECTURAL NAVIGATION BAR
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 15px 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-glass-header);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line-stone);
  transition: background 0.4s ease, padding 0.4s ease, border-color 0.4s ease;
}
.site-header.is-scrolled {
  padding: 11px 44px;
  background: rgba(250, 246, 239, 0.95);
  box-shadow: 0 6px 24px rgba(29, 24, 20, 0.05);
}

.brand-identity {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  text-decoration: none;
  color: var(--ink-primary);
}
.brand-mark-frame {
  width: 40px;
  height: 40px;
  background: #141312;
  border: 1px solid var(--line-bronze);
  padding: 2px;
  flex-shrink: 0;
}
.brand-mark-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.brand-titles {
  display: flex;
  flex-direction: column;
}
.brand-en {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--ink-primary);
  line-height: 1.1;
  direction: ltr;
  unicode-bidi: isolate;
}
.brand-sub {
  font-family: var(--font-sans);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-secondary);
  margin-top: 3px;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  list-style: none;
}
.header-nav a {
  color: var(--ink-secondary);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.03em;
  transition: color 0.25s;
  position: relative;
}
html[lang="en"] .header-nav a {
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.16em;
}
.header-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -5px;
  height: 1.5px;
  background: var(--bronze-primary);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s var(--ease-out-expo);
}
.header-nav a:hover {
  color: var(--ink-primary);
}
.header-nav a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}
.ctrl-pill {
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--line-stone-strong);
  color: var(--ink-primary);
  padding: 7px 13px;
  font-family: var(--font-sans);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  transition: border-color 0.25s, color 0.25s, background 0.25s;
}
.ctrl-pill:hover, .ctrl-pill.is-active {
  border-color: var(--bronze-primary);
  color: var(--bronze-deep);
  background: rgba(154, 116, 68, 0.1);
}
.header-cta {
  text-decoration: none;
  background: var(--bg-espresso);
  color: var(--ivory-light);
  padding: 8px 20px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  border: 1px solid var(--bg-espresso);
  transition: background 0.3s, border-color 0.3s, color 0.3s;
}
html[lang="en"] .header-cta {
  text-transform: uppercase;
  font-size: 10.5px;
  letter-spacing: 0.16em;
}
.header-cta:hover {
  background: var(--bronze-primary);
  border-color: var(--bronze-primary);
  color: #ffffff;
}

/* ==========================================================================
   SCROLL PROGRESS RAIL (Side Architectural Chapter Indicator)
   ========================================================================== */
.chapter-rail {
  position: fixed;
  top: 50%;
  left: 24px;
  transform: translateY(-50%);
  z-index: 50;
  display: flex;
  flex-direction: column;
  gap: 16px;
  pointer-events: auto;
}
html[lang="en"] .chapter-rail {
  left: auto;
  right: 24px;
}
.rail-dot {
  width: 24px;
  height: 16px;
  display: flex;
  align-items: center;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
}
.rail-dot span {
  display: block;
  width: 11px;
  height: 1.5px;
  background: rgba(36, 30, 26, 0.28);
  transition: width 0.35s var(--ease-out-expo), background 0.35s;
}
.rail-dot.is-active span, .rail-dot:hover span {
  width: 24px;
  background: var(--bronze-primary);
}

/* ==========================================================================
   SPATIAL SCROLL STORYTELLING CHAPTERS (Over Sunlit 3D Pavilion)
   ========================================================================== */
.spatial-main {
  position: relative;
  z-index: 10;
  pointer-events: none;
}
.spatial-chapter {
  min-height: 104vh;
  display: flex;
  align-items: center;
  padding: 112px 5.5vw 72px;
  position: relative;
}
.spatial-chapter--hero {
  min-height: 100vh;
  align-items: flex-end;
  padding-bottom: 5.5vh;
}
.hero-editorial-grid {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 32px;
  pointer-events: auto;
}
.hero-primary {
  max-width: 560px;
  position: relative;
  padding: 30px 34px;
  background: var(--bg-glass-stone);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  border: 1px solid var(--line-stone);
  border-inline-start: 3px solid var(--bronze-primary);
  box-shadow: var(--shadow-soft);
}
.eyebrow-tag {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-sans);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--bronze-primary);
  margin-bottom: 14px;
}
.eyebrow-line {
  width: 30px;
  height: 1.5px;
  background: var(--bronze-primary);
  flex-shrink: 0;
}
.hero-display-ar {
  font-size: clamp(30px, 3.5vw, 48px);
  font-weight: 700;
  line-height: 1.24;
  color: var(--ink-primary);
  margin-bottom: 14px;
}
.hero-display-en {
  font-family: var(--font-serif);
  font-size: clamp(38px, 4.5vw, 64px);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--ink-primary);
  margin-bottom: 14px;
}
.hero-display-en em, .hero-display-ar em {
  font-style: italic;
  color: var(--bronze-primary);
  font-weight: 500;
}
.hero-lead {
  font-size: 14px;
  color: var(--ink-secondary);
  line-height: 1.82;
  margin-bottom: 24px;
}
.hero-btn-group {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.btn-architectural-primary {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: linear-gradient(145deg, #2c221b 0%, #171310 100%);
  color: #faf6f0;
  text-decoration: none;
  padding: 13px 24px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  border: 1px solid rgba(200, 166, 117, 0.55);
  border-top-color: rgba(235, 210, 168, 0.85);
  border-bottom-color: rgba(138, 102, 57, 0.7);
  box-shadow: 0 10px 24px -5px rgba(28, 22, 17, 0.45), 0 0 0 1px rgba(154, 116, 68, 0.22), inset 0 1px 0 rgba(255, 255, 255, 0.15);
  transition: all 0.38s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  overflow: hidden;
}
.btn-architectural-primary:hover {
  background: linear-gradient(145deg, #382c23 0%, #1e1713 100%);
  border-color: var(--bronze-bright);
  border-top-color: #ffdca3;
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 16px 36px -6px rgba(154, 116, 68, 0.45), 0 0 0 1px rgba(200, 166, 117, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}
.btn-architectural-primary:active {
  transform: translateY(1px);
  box-shadow: 0 6px 16px -4px rgba(28, 22, 17, 0.55);
}
.btn-portal-sheen {
  position: absolute;
  top: 0;
  left: -130%;
  width: 75%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.22), transparent);
  transform: skewX(-24deg);
  transition: left 0.75s ease;
  pointer-events: none;
}
.btn-architectural-primary:hover .btn-portal-sheen {
  left: 140%;
}
.btn-portal-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: rgba(154, 116, 68, 0.2);
  border: 1px solid rgba(200, 166, 117, 0.4);
  color: var(--bronze-bright);
  flex-shrink: 0;
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1), background 0.3s, color 0.3s, border-color 0.3s;
}
.btn-architectural-primary:hover .btn-portal-icon {
  background: var(--bronze-primary);
  border-color: var(--bronze-bright);
  color: #ffffff;
  transform: rotate(45deg) scale(1.06);
}
.btn-portal-icon svg {
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}
.btn-architectural-primary:hover .btn-portal-icon svg {
  transform: rotate(-45deg);
}
.btn-portal-arrow {
  display: inline-flex;
  align-items: center;
  color: var(--bronze-bright);
  transition: transform 0.35s ease, color 0.3s;
}
html[dir="rtl"] .btn-portal-arrow svg {
  transform: rotate(180deg);
}
.btn-architectural-primary:hover .btn-portal-arrow {
  color: #ffffff;
  transform: translateX(-4px);
}
html[dir="ltr"] .btn-architectural-primary:hover .btn-portal-arrow {
  transform: translateX(4px);
}
.btn-architectural-ghost {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(251, 248, 242, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--ink-primary);
  text-decoration: none;
  padding: 13px 22px;
  font-size: 12.5px;
  font-weight: 500;
  border: 1px solid var(--line-stone-strong);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.04);
  transition: all 0.35s var(--ease-out-expo);
  cursor: pointer;
}
.btn-architectural-ghost:hover {
  border-color: var(--bronze-primary);
  color: var(--bronze-deep);
  background: #ffffff;
  box-shadow: 0 8px 20px rgba(154, 116, 68, 0.14);
  transform: translateY(-2px);
}

.hero-telemetry {
  background: var(--bg-glass-stone);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  border: 1px solid var(--line-stone);
  box-shadow: var(--shadow-soft);
  padding: 20px 24px;
  min-width: 285px;
}
.telemetry-coords {
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--bronze-primary);
  text-transform: uppercase;
  padding-bottom: 11px;
  margin-bottom: 13px;
  border-bottom: 1px solid var(--line-stone);
  direction: ltr;
  unicode-bidi: isolate;
}
.telemetry-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 18px;
}
.telemetry-stat strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 25px;
  font-weight: 600;
  color: var(--ink-primary);
  line-height: 1.1;
  direction: ltr;
  unicode-bidi: isolate;
}
.telemetry-stat span {
  font-size: 11px;
  color: var(--ink-secondary);
}

/* Chapter Story Cards (Chapters 02 & 03) */
.story-panel {
  pointer-events: auto;
  max-width: 450px;
  background: var(--bg-glass-stone);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  border: 1px solid var(--line-stone);
  box-shadow: var(--shadow-soft);
  padding: 34px 36px;
  position: relative;
}
.story-panel::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--bronze-primary), transparent);
}
.spatial-chapter--end {
  justify-content: flex-end;
}
.chapter-num {
  font-family: var(--font-sans);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.24em;
  color: var(--bronze-primary);
  display: block;
  margin-bottom: 10px;
  direction: ltr;
  unicode-bidi: isolate;
}
.story-panel h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--ink-primary);
  line-height: 1.32;
  margin-bottom: 12px;
}
html[lang="en"] .story-panel h2 {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 500;
}
.story-panel p {
  font-size: 13.5px;
  color: var(--ink-secondary);
  line-height: 1.82;
  margin-bottom: 20px;
}
.spec-micro-list {
  list-style: none;
  border-top: 1px solid var(--line-stone);
  padding-top: 14px;
  display: grid;
  gap: 9px;
}
.spec-micro-list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  font-size: 12px;
}
.spec-key {
  color: var(--ink-muted);
}
.spec-val {
  color: var(--ink-primary);
  font-weight: 600;
}

/* ==========================================================================
   CHAPTER 04: FULL-VIEWPORT INTERACTIVE 3D BESPOKE ATELIER
   ========================================================================== */
.atelier-stage-section {
  min-height: 104vh;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 88px 44px 28px;
  pointer-events: none;
}
.atelier-top-bar {
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  pointer-events: auto;
}
.atelier-heading-chip {
  background: var(--bg-glass-stone);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--line-stone);
  box-shadow: var(--shadow-card);
  padding: 15px 22px;
  transition: background 0.4s, border-color 0.4s, color 0.4s;
}
.atelier-heading-chip h2 {
  font-size: 17.5px;
  font-weight: 700;
  color: var(--ink-primary);
}
html[lang="en"] .atelier-heading-chip h2 {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 500;
}
.atelier-heading-chip p {
  font-size: 12px;
  color: var(--ink-secondary);
  margin-top: 3px;
}
.atelier-orbit-badge {
  background: var(--bg-glass-stone);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--line-bronze);
  box-shadow: var(--shadow-card);
  padding: 10px 16px;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--bronze-deep);
  display: inline-flex;
  align-items: center;
  gap: 9px;
}

.atelier-dock {
  max-width: 1320px;
  width: 100%;
  margin: 0 auto;
  background: var(--bg-glass-stone);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--line-stone-strong);
  box-shadow: var(--shadow-soft);
  padding: 15px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  pointer-events: auto;
  transition: background 0.4s, border-color 0.4s;
}
.palette-selector-group {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.dock-group-label {
  font-family: var(--font-sans);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-inline-end: 6px;
}
.swatch-btn {
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid var(--line-stone);
  color: var(--ink-secondary);
  padding: 8px 13px;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  cursor: pointer;
  font-family: inherit;
  font-size: 12px;
  font-weight: 500;
  transition: all 0.25s ease;
}
.swatch-disc {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 1px solid rgba(36, 30, 26, 0.28);
  flex-shrink: 0;
}
.swatch-btn:hover {
  border-color: var(--bronze-primary);
  color: var(--ink-primary);
  background: #ffffff;
}
.swatch-btn.is-active {
  border-color: var(--bronze-primary);
  background: rgba(154, 116, 68, 0.14);
  color: var(--ink-primary);
  font-weight: 600;
}

.atelier-actions-group {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.atelier-mode-btn {
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid var(--line-stone-strong);
  color: var(--ink-primary);
  padding: 8px 14px;
  font-family: inherit;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  transition: all 0.25s ease;
}
.atelier-mode-btn:hover, .atelier-mode-btn.is-active {
  background: var(--bg-espresso);
  border-color: var(--bg-espresso);
  color: var(--ivory-light);
}

.atelier-zoom-pair {
  display: inline-flex;
  border: 1px solid var(--line-stone-strong);
  background: rgba(255, 255, 255, 0.65);
}
.atelier-icon-btn {
  width: 34px;
  height: 34px;
  border: none;
  background: transparent;
  color: var(--ink-primary);
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, color 0.2s;
}
.atelier-icon-btn + .atelier-icon-btn {
  border-left: 1px solid var(--line-stone);
}
.atelier-icon-btn:hover {
  background: var(--bg-espresso);
  color: var(--ivory-light);
}

/* Warm Smoked-Espresso HUD Adaptation when Evening 2700K Mood is Active */
body.is-evening-stage .atelier-heading-chip,
body.is-evening-stage .atelier-orbit-badge,
body.is-evening-stage .atelier-dock {
  background: rgba(34, 28, 23, 0.88);
  border-color: rgba(200, 166, 117, 0.34);
}
body.is-evening-stage .atelier-heading-chip h2 { color: var(--ivory-light); }
body.is-evening-stage .atelier-heading-chip p,
body.is-evening-stage .dock-group-label { color: var(--ivory-soft); }
body.is-evening-stage .atelier-orbit-badge { color: var(--bronze-bright); }
body.is-evening-stage .swatch-btn,
body.is-evening-stage .atelier-mode-btn,
body.is-evening-stage .atelier-zoom-pair {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(246, 241, 232, 0.18);
  color: var(--ivory-light);
}
body.is-evening-stage .atelier-icon-btn { color: var(--ivory-light); }
body.is-evening-stage .swatch-btn.is-active,
body.is-evening-stage .atelier-mode-btn.is-active {
  background: var(--bronze-bright);
  border-color: var(--bronze-bright);
  color: var(--ink-primary);
  font-weight: 600;
}

/* ==========================================================================
   WARM ARCHITECTURAL EDITORIAL SECTIONS (Z-Index Above Fixed Stage & SVG)
   ========================================================================== */
.editorial-surface {
  position: relative;
  z-index: 30;
  border-top: 1px solid var(--line-stone);
  pointer-events: auto;
}
.editorial-surface--alabaster {
  background: var(--bg-alabaster);
  color: var(--ink-primary);
}
.editorial-surface--travertine {
  background: var(--bg-travertine);
  color: var(--ink-primary);
}
.editorial-surface--espresso {
  background: var(--bg-espresso);
  color: var(--ivory-light);
  border-top-color: var(--line-light);
}

.section-container {
  max-width: 1360px;
  margin: 0 auto;
  padding: 104px 44px;
}
.editorial-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 32px;
  margin-bottom: 56px;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--line-stone);
  flex-wrap: wrap;
}
.editorial-surface--espresso .editorial-header {
  border-bottom-color: var(--line-light);
}
.editorial-surface--espresso .eyebrow-tag {
  color: var(--bronze-bright);
}
.editorial-surface--espresso .eyebrow-line {
  background: var(--bronze-bright);
}

.editorial-header-titles {
  max-width: 680px;
}
.editorial-title {
  font-size: clamp(27px, 3.2vw, 44px);
  font-weight: 700;
  color: inherit;
  line-height: 1.24;
  margin-top: 8px;
}
html[lang="en"] .editorial-title {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(34px, 3.9vw, 52px);
}
.editorial-subtitle {
  font-size: 14.5px;
  color: var(--ink-secondary);
  max-width: 450px;
  line-height: 1.82;
}
.editorial-surface--espresso .editorial-subtitle {
  color: var(--ivory-soft);
}

/* ==========================================================================
   SECTION 04: ARCHITECTURAL DISCIPLINES (Warm Parchment Cards on Alabaster)
   ========================================================================== */
.disciplines-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line-stone);
  border-left: 1px solid var(--line-stone);
  box-shadow: var(--shadow-card);
}
.discipline-cell {
  padding: 40px 30px;
  border-right: 1px solid var(--line-stone);
  border-bottom: 1px solid var(--line-stone);
  background: var(--bg-parchment);
  transition: background 0.35s ease, transform 0.35s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 320px;
}
.discipline-cell:hover {
  background: #ffffff;
}
.discipline-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
}
.discipline-index {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--bronze-primary);
  direction: ltr;
  unicode-bidi: isolate;
}
.discipline-svg {
  width: 28px;
  height: 28px;
  stroke: var(--ink-primary);
  stroke-width: 1.2;
  fill: none;
  opacity: 0.78;
}
.discipline-cell h3 {
  font-size: 18.5px;
  font-weight: 700;
  color: var(--ink-primary);
  margin-bottom: 12px;
}
html[lang="en"] .discipline-cell h3 {
  font-family: var(--font-serif);
  font-size: 25px;
  font-weight: 500;
}
.discipline-cell p {
  font-size: 13.5px;
  color: var(--ink-secondary);
  line-height: 1.8;
}
.discipline-meta {
  margin-top: 24px;
  padding-top: 14px;
  border-top: 1px solid var(--line-stone);
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--bronze-primary);
  direction: ltr;
  unicode-bidi: isolate;
  text-align: start;
}

/* ==========================================================================
   SECTION 05: SEAMLESS CROSSFADE ARCHITECTURAL FINISH STUDIES + MOSAIC
   ========================================================================== */
.study-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-bottom: 48px;
}
.study-card {
  background: var(--bg-parchment);
  border: 1px solid var(--line-stone);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}
.study-viewport {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #ded6c9;
}
.study-frame {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transform: scale(1.02);
  transition: opacity 0.55s var(--ease-out-expo), transform 0.7s var(--ease-out-expo);
  pointer-events: none;
}
.study-frame.is-active {
  opacity: 1;
  transform: scale(1);
  pointer-events: auto;
}
.study-zoom-btn {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 4;
  width: 36px;
  height: 36px;
  background: rgba(251, 248, 242, 0.88);
  backdrop-filter: blur(10px);
  border: 1px solid var(--line-stone-strong);
  color: var(--ink-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.25s, color 0.25s, border-color 0.25s;
}
.study-zoom-btn:hover {
  background: var(--bg-espresso);
  border-color: var(--bg-espresso);
  color: var(--ivory-light);
}
.study-controls-bar {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--line-stone);
  border-bottom: 1px solid var(--line-stone);
  background: #f4efe6;
}
.study-tab {
  background: transparent;
  border: none;
  padding: 12px 16px;
  font-family: inherit;
  font-size: 12px;
  font-weight: 500;
  color: var(--ink-secondary);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  transition: background 0.25s, color 0.25s;
}
.study-tab + .study-tab {
  border-inline-start: 1px solid var(--line-stone);
}
.study-tab:hover {
  background: rgba(255, 255, 255, 0.65);
  color: var(--ink-primary);
}
.study-tab.is-active {
  background: #ffffff;
  color: var(--ink-primary);
  font-weight: 700;
  box-shadow: inset 0 -2px 0 var(--bronze-primary);
}
.study-tab-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 1px solid rgba(36, 30, 26, 0.25);
  flex-shrink: 0;
}
.study-caption {
  padding: 20px 24px;
}
.study-caption h3 {
  font-size: 16.5px;
  font-weight: 700;
  color: var(--ink-primary);
}
.study-caption p {
  font-size: 13px;
  color: var(--ink-secondary);
  margin-top: 4px;
}

/* Curated Architectural Photography Mosaic */
.archive-mosaic {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 22px;
}
.mosaic-item {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-stone);
  background: var(--bg-parchment);
  box-shadow: var(--shadow-card);
  cursor: pointer;
}
.mosaic-item--wide { grid-column: span 7; aspect-ratio: 16 / 10; }
.mosaic-item--tall { grid-column: span 5; aspect-ratio: 16 / 10; }
.mosaic-item--third { grid-column: span 4; aspect-ratio: 16 / 10; }

.mosaic-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.85s var(--ease-out-expo);
}
.mosaic-item:hover img {
  transform: scale(1.045);
}
.mosaic-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 48%, rgba(26, 21, 17, 0.82) 100%);
  padding: 22px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}
.mosaic-loc {
  font-family: var(--font-sans);
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--bronze-bright);
  margin-bottom: 4px;
  direction: ltr;
  unicode-bidi: isolate;
  text-align: start;
}
.mosaic-title {
  font-size: 15.5px;
  font-weight: 600;
  color: var(--ivory-light);
}

/* Lightbox Modal */
.lightbox-modal {
  position: fixed;
  inset: 0;
  z-index: 9500;
  background: rgba(24, 19, 16, 0.94);
  backdrop-filter: blur(18px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s;
}
.lightbox-modal.is-open {
  opacity: 1;
  visibility: visible;
}
.lightbox-modal img {
  max-width: 90vw;
  max-height: 85vh;
  object-fit: contain;
  border: 1px solid rgba(246, 241, 232, 0.25);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.45);
}
.lightbox-close {
  position: absolute;
  top: 26px;
  right: 34px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(246, 241, 232, 0.3);
  color: var(--ivory-light);
  padding: 10px 18px;
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
}
.lightbox-close:hover {
  background: var(--bronze-primary);
  border-color: var(--bronze-primary);
}

/* ==========================================================================
   SECTION 06: QATAR STATUTORY COMPLIANCE (Warm Roasted Walnut-Espresso)
   ========================================================================== */
.ledger-table {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--line-light);
  border-left: 1px solid var(--line-light);
}
.ledger-row {
  padding: 36px;
  border-right: 1px solid var(--line-light);
  border-bottom: 1px solid var(--line-light);
  background: var(--bg-espresso-soft);
  display: grid;
  grid-template-columns: 118px 1fr;
  gap: 24px;
  align-items: start;
  transition: background 0.3s ease;
}
.ledger-row:hover {
  background: #352c26;
}
.ledger-code {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--bronze-bright);
  text-transform: uppercase;
  padding-top: 4px;
  direction: ltr;
  unicode-bidi: isolate;
  text-align: start;
}
.ledger-body h3 {
  font-size: 17.5px;
  font-weight: 600;
  color: var(--ivory-light);
  margin-bottom: 8px;
}
.ledger-body p {
  font-size: 13.5px;
  color: var(--ivory-soft);
  line-height: 1.82;
}

/* ==========================================================================
   SECTION 07: PRIVATE COMMISSION CONCIERGE & SHOWROOM DOSSIER (Warm Alabaster)
   ========================================================================== */
.commission-grid {
  display: grid;
  grid-template-columns: 1fr 1.12fr;
  gap: 60px;
  align-items: start;
}
.dossier-list {
  margin-top: 34px;
  border-top: 1px solid var(--line-stone);
}
.dossier-item {
  padding: 18px 0;
  border-bottom: 1px solid var(--line-stone);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 20px;
}
.dossier-label {
  font-family: var(--font-sans);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--bronze-primary);
  direction: ltr;
  unicode-bidi: isolate;
  flex-shrink: 0;
}
.dossier-val, .dossier-val a {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-primary);
  text-decoration: none;
  transition: color 0.25s;
}
.dossier-val a:hover {
  color: var(--bronze-primary);
}

.commission-form-card {
  background: var(--bg-parchment);
  border: 1px solid var(--line-stone-strong);
  box-shadow: var(--shadow-soft);
  padding: 42px;
}
.field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.field-wrap {
  margin-bottom: 20px;
}
.field-wrap label {
  display: block;
  font-size: 11.5px;
  font-weight: 600;
  color: var(--ink-secondary);
  margin-bottom: 8px;
}
html[lang="en"] .field-wrap label {
  text-transform: uppercase;
  font-size: 10.5px;
  letter-spacing: 0.14em;
}
.field-control {
  width: 100%;
  background: #ffffff;
  border: 1px solid var(--line-stone-strong);
  color: var(--ink-primary);
  padding: 12px 15px;
  font-family: inherit;
  font-size: 13.5px;
  outline: none;
  transition: border-color 0.25s, box-shadow 0.25s;
}
.field-control::placeholder {
  color: var(--ink-muted);
}
.field-control:focus {
  border-color: var(--bronze-primary);
  box-shadow: 0 0 0 3px rgba(154, 116, 68, 0.12);
}
.field-control--locked {
  border-color: var(--line-bronze);
  color: var(--bronze-deep);
  font-weight: 600;
  background: rgba(154, 116, 68, 0.08);
}
.commission-submit {
  width: 100%;
  background: var(--bg-espresso);
  color: var(--ivory-light);
  border: 1px solid var(--bg-espresso);
  padding: 15px 28px;
  font-family: inherit;
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: all 0.3s ease;
}
.commission-submit:hover {
  background: var(--bronze-primary);
  border-color: var(--bronze-primary);
  color: #ffffff;
}
.commission-feedback {
  display: none;
  margin-top: 18px;
  padding: 15px;
  border: 1px solid var(--bronze-primary);
  background: rgba(154, 116, 68, 0.1);
  color: var(--ink-primary);
  font-size: 13px;
  font-weight: 500;
}

/* ==========================================================================
   ARCHITECTURAL FOOTER (Warm Deep Umber-Espresso)
   ========================================================================== */
.site-footer {
  position: relative;
  z-index: 30;
  background: var(--bg-footer);
  color: var(--ivory-light);
  border-top: 1px solid var(--line-light);
  padding: 60px 44px 34px;
}
.brand-identity--footer .brand-en {
  color: var(--ivory-light);
}
.brand-identity--footer .brand-sub {
  color: var(--ivory-muted);
}
.footer-inner {
  max-width: 1360px;
  margin: 0 auto;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line-light);
  flex-wrap: wrap;
}
.footer-monogram {
  max-width: 450px;
}
.footer-monogram p {
  margin-top: 16px;
  font-size: 13px;
  color: var(--ivory-soft);
  line-height: 1.82;
}
.footer-nav-cols {
  display: flex;
  gap: 64px;
  flex-wrap: wrap;
}
.footer-col h4 {
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bronze-bright);
  margin-bottom: 15px;
}
.footer-col ul {
  list-style: none;
  display: grid;
  gap: 10px;
}
.footer-col a, .footer-col li {
  font-size: 13px;
  color: var(--ivory-soft);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-col a:hover {
  color: #ffffff;
}
.footer-bottom {
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ivory-muted);
  flex-wrap: wrap;
  gap: 12px;
}

/* ==========================================================================
   RESPONSIVE BREAKPOINTS
   ========================================================================== */
@media (max-width: 1100px) {
  .site-header { padding: 14px 24px; }
  .header-nav { display: none; }
  .disciplines-grid { grid-template-columns: repeat(2, 1fr); }
  .study-grid { grid-template-columns: 1fr; }
  .commission-grid { grid-template-columns: 1fr; gap: 40px; }
  .ledger-table { grid-template-columns: 1fr; }
  .mosaic-item--wide, .mosaic-item--tall, .mosaic-item--third { grid-column: span 6; }
  .chapter-rail { display: none; }
}

@media (max-width: 720px) {
  .section-container { padding: 68px 20px; }
  .spatial-chapter { padding: 92px 18px 44px; }
  .hero-editorial-grid { flex-direction: column; align-items: flex-start; }
  .hero-telemetry { width: 100%; }
  .disciplines-grid { grid-template-columns: 1fr; }
  .mosaic-item--wide, .mosaic-item--tall, .mosaic-item--third { grid-column: span 12; }
  .field-grid { grid-template-columns: 1fr; }
  .commission-form-card { padding: 26px 20px; }
  .atelier-stage-section { padding: 80px 16px 20px; }
  .atelier-dock { padding: 14px; }
  .study-controls-bar { grid-template-columns: 1fr; }
  .study-tab + .study-tab { border-inline-start: none; border-top: 1px solid var(--line-stone); }
  .ledger-row { grid-template-columns: 1fr; gap: 8px; }
}