/* ==========================================================================
   M&O DECANTS ATELIER — NICHE OLFACTORY LABORATORY & STUDIO STYLESHEET
   Aesthetic: Le Labo / Byredo / Aesop Editorial Minimalism
   Dual-Theme Engine: Studio Linen (Light) & Darkroom Obsidian (Dark)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=JetBrains+Mono:wght@300;400;500;600&family=Plus+Jakarta+Sans:wght@300;400;500;600;700&family=Syne:wght@400;500;600;700;800&display=swap');

:root {
  /* Studio Linen Theme (Default) */
  --bg-main: #f9f7f2;
  --bg-card: #ffffff;
  --bg-card-subtle: #f3efe6;
  --bg-surface: #ece7dc;
  --bg-glass: rgba(249, 247, 242, 0.88);
  --bg-inverted: #141311;

  --ink-primary: #151412;
  --ink-secondary: #575249;
  --ink-muted: #8b8578;
  --ink-inverted: #f8f6f0;

  --border-line: #e3ded4;
  --border-strong: #cac4b7;
  --border-focus: #151412;

  --accent-clay: #b85437;
  --accent-clay-subtle: rgba(184, 84, 55, 0.08);
  --accent-sage: #415949;
  --accent-amber: #d48b38;
  --accent-gold: #b38b3f;

  --font-display: 'Syne', -apple-system, sans-serif;
  --font-serif: 'Instrument Serif', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --radius-xs: 2px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --shadow-subtle: 0 2px 12px rgba(21, 20, 18, 0.04);
  --shadow-card: 0 10px 30px rgba(21, 20, 18, 0.06), 0 0 0 1px var(--border-line);
  --shadow-float: 0 20px 50px rgba(21, 20, 18, 0.12);
}

[data-theme="dark"] {
  --bg-main: #0d0c0a;
  --bg-card: #151412;
  --bg-card-subtle: #1c1b18;
  --bg-surface: #24221e;
  --bg-glass: rgba(13, 12, 10, 0.9);
  --bg-inverted: #f7f5ef;

  --ink-primary: #f8f6f0;
  --ink-secondary: #aba496;
  --ink-muted: #787266;
  --ink-inverted: #151412;

  --border-line: #262420;
  --border-strong: #3b3831;
  --border-focus: #f8f6f0;

  --accent-clay: #e06d4e;
  --accent-clay-subtle: rgba(224, 109, 78, 0.12);
  --accent-sage: #5e7d69;
  --accent-amber: #e8a04d;
  --accent-gold: #c9a44c;

  --shadow-subtle: 0 2px 12px rgba(0, 0, 0, 0.4);
  --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.6), 0 0 0 1px var(--border-line);
  --shadow-float: 0 20px 50px rgba(0, 0, 0, 0.8);
}

/* Reset & Global */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  background-color: var(--bg-main);
  color: var(--ink-primary);
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color 0.4s var(--ease), color 0.4s var(--ease);
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--ink-primary);
  color: var(--bg-main);
}

a {
  color: inherit;
  text-decoration: none;
  cursor: pointer;
}

button {
  background: none;
  border: none;
  font-family: inherit;
  color: inherit;
  cursor: pointer;
  outline: none;
}

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

.container {
  width: 100%;
  max-width: 1360px;
  margin: 0 auto;
  padding: 0 4vw;
}

/* Paper Grain Texture */
.paper-grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  opacity: 0.024;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Typography Classes */
h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.1;
  color: var(--ink-primary);
  letter-spacing: -0.02em;
}

.serif-italic {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
}

.mono-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* ==========================================================================
   TOP LAB BANNER & ATELIER NAVBAR
   ========================================================================== */
.lab-ticker {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-line);
  padding: 0.5rem 4vw;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-secondary);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.lab-ticker-left {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.lab-status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-clay);
  display: inline-block;
  box-shadow: 0 0 8px var(--accent-clay);
}

.header-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-line);
  transition: all 0.3s var(--ease);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 0;
}

.atelier-logo {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.atelier-stamp {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  border: 1.5px solid var(--ink-primary);
  padding: 0.2rem 0.55rem;
  letter-spacing: 0.1em;
}

.atelier-brand-text {
  display: flex;
  flex-direction: column;
}

.atelier-brand-text span.brand-name {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
}

.atelier-brand-text span.brand-desc {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  color: var(--ink-muted);
  text-transform: uppercase;
  margin-top: 3px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2.2rem;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-secondary);
}

.nav-menu a {
  position: relative;
  transition: color 0.25s;
}

.nav-menu a:hover, .nav-menu a.active {
  color: var(--ink-primary);
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--ink-primary);
  transition: width 0.3s var(--ease);
}

.nav-menu a:hover::after, .nav-menu a.active::after {
  width: 100%;
}

.nav-utilities {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-pill-util {
  border: 1px solid var(--border-line);
  background: var(--bg-card);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-family: var(--font-mono);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--ink-secondary);
  transition: all 0.2s;
}

.btn-pill-util:hover {
  border-color: var(--ink-primary);
  color: var(--ink-primary);
}

.cart-counter-pill {
  background: var(--ink-primary);
  color: var(--bg-main);
  padding: 0.1rem 0.45rem;
  border-radius: var(--radius-full);
  font-size: 0.65rem;
  font-weight: 600;
}

/* ==========================================================================
   HERO EDITORIAL ATELIER
   ========================================================================== */
.hero-atelier {
  padding: 6rem 0 4.5rem;
  position: relative;
  border-bottom: 1px solid var(--border-line);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 4rem;
  align-items: center;
}

.hero-meta-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-line);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink-secondary);
  margin-bottom: 1.5rem;
}

.hero-atelier h1 {
  font-size: clamp(3rem, 6.5vw, 5.6rem);
  line-height: 0.98;
  margin-bottom: 1.8rem;
  letter-spacing: -0.04em;
}

.hero-atelier h1 .italic-flair {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  display: inline-block;
  color: var(--accent-clay);
}

.hero-atelier p.lead-text {
  font-size: 1.15rem;
  line-height: 1.65;
  color: var(--ink-secondary);
  max-width: 580px;
  margin-bottom: 2.5rem;
}

.hero-actions-row {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  flex-wrap: wrap;
}

.btn-atelier-primary {
  background: var(--ink-primary);
  color: var(--bg-main);
  padding: 0.95rem 2rem;
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: var(--radius-xs);
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  transition: all 0.3s var(--ease);
}

.btn-atelier-primary:hover {
  background: var(--accent-clay);
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(184, 84, 55, 0.25);
}

.btn-atelier-outline {
  border: 1.5px solid var(--border-strong);
  color: var(--ink-primary);
  padding: 0.95rem 1.8rem;
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: var(--radius-xs);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  transition: all 0.3s var(--ease);
}

.btn-atelier-outline:hover {
  border-color: var(--ink-primary);
  background: var(--bg-card-subtle);
  transform: translateY(-2px);
}

/* Hero Right Visual: The Lab Bottle Composition */
.hero-visual-card {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  padding: 2.5rem 2.2rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  position: relative;
}

.formula-card-top {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px dashed var(--border-strong);
  padding-bottom: 1rem;
  margin-bottom: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-muted);
}

.hero-bottle-frame {
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  margin-bottom: 1.5rem;
}

.hero-bottle-frame img {
  max-height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 15px 30px rgba(0, 0, 0, 0.15));
  transition: transform 0.4s var(--ease);
}

.hero-visual-card:hover .hero-bottle-frame img {
  transform: scale(1.06) rotate(-1deg);
}

.hero-formula-spec {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  border-top: 1px dashed var(--border-strong);
  padding-top: 1.2rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.hero-formula-spec span.lbl {
  color: var(--ink-muted);
  display: block;
}

.hero-formula-spec strong {
  color: var(--ink-primary);
}

/* ==========================================================================
   INTERACTIVE BEAKER & PIPETTE SIMULATOR
   ========================================================================== */
.beaker-section {
  padding: 6.5rem 0;
  border-bottom: 1px solid var(--border-line);
  background: var(--bg-card-subtle);
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-clay);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  display: inline-block;
  margin-bottom: 0.8rem;
}

.beaker-layout {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 4rem;
  align-items: center;
}

.beaker-visual-box {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-md);
  padding: 3rem 2.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  box-shadow: var(--shadow-card);
}

/* Virtual Graduated Beaker in CSS */
.virtual-cylinder-wrapper {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  margin-bottom: 2rem;
}

.graduated-cylinder {
  width: 90px;
  height: 280px;
  border: 2.5px solid var(--ink-primary);
  border-top: none;
  border-radius: 0 0 16px 16px;
  position: relative;
  background: rgba(255, 255, 255, 0.05);
  overflow: hidden;
  box-shadow: inset 0 0 15px rgba(0, 0, 0, 0.05);
}

.cylinder-liquid {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 25%;
  background: linear-gradient(180deg, rgba(232, 160, 77, 0.85), rgba(184, 84, 55, 0.95));
  transition: height 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
  border-top: 3px solid rgba(255, 255, 255, 0.6);
}

.cylinder-liquid::after {
  content: '';
  position: absolute;
  top: -6px;
  left: 0;
  right: 0;
  height: 12px;
  background: rgba(255, 255, 255, 0.35);
  border-radius: 50%;
}

.cylinder-ticks {
  position: absolute;
  top: 10px;
  right: 6px;
  bottom: 10px;
  width: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--ink-muted);
}

.beaker-size-selector {
  display: flex;
  gap: 0.6rem;
  width: 100%;
}

.btn-size-tab {
  flex: 1;
  padding: 0.75rem 0.5rem;
  border: 1px solid var(--border-line);
  background: var(--bg-main);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s;
}

.btn-size-tab.active {
  background: var(--ink-primary);
  color: var(--bg-main);
  border-color: var(--ink-primary);
}

.beaker-readout-card {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-md);
  padding: 3rem;
  box-shadow: var(--shadow-card);
}

.readout-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.8rem;
  margin: 2rem 0;
}

.readout-item {
  border-left: 2px solid var(--accent-clay);
  padding-left: 1rem;
}

.readout-item .val {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--ink-primary);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.readout-item .desc {
  font-size: 0.78rem;
  color: var(--ink-secondary);
}

/* ==========================================================================
   BESPOKE LABEL CUSTOMIZER (LE LABO STYLE)
   ========================================================================== */
.bespoke-label-section {
  padding: 6.5rem 0;
  border-bottom: 1px solid var(--border-line);
}

.label-builder-box {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-lg);
  padding: 3.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
  box-shadow: var(--shadow-card);
}

/* Realistic Textured Label */
.physical-label-preview {
  background: #fbf9f4;
  border: 1px solid #dcd7ca;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  padding: 2.2rem 2rem;
  border-radius: 4px;
  position: relative;
  color: #1a1917;
  font-family: var(--font-mono);
}

.physical-label-preview::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='40'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  pointer-events: none;
}

.label-header {
  display: flex;
  justify-content: space-between;
  border-bottom: 1.5px solid #1a1917;
  padding-bottom: 0.6rem;
  margin-bottom: 1rem;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.label-fragrance-name {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.3rem;
  line-height: 1.1;
}

.label-custom-recipient {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.35rem;
  color: var(--accent-clay);
  border-bottom: 1px dashed #bfb8a8;
  padding-bottom: 0.4rem;
  margin: 0.8rem 0;
  min-height: 28px;
}

.label-footer-specs {
  display: flex;
  justify-content: space-between;
  font-size: 0.65rem;
  margin-top: 1.2rem;
  color: #635f56;
}

/* Label Inputs */
.label-controls-pane h3 {
  font-size: 2.2rem;
  margin-bottom: 0.6rem;
}

.label-controls-pane p {
  color: var(--ink-secondary);
  font-size: 0.95rem;
  margin-bottom: 2rem;
}

.input-atelier {
  width: 100%;
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-line);
  padding: 0.85rem 1.1rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink-primary);
  border-radius: var(--radius-xs);
  outline: none;
  transition: border-color 0.2s;
  margin-bottom: 1.2rem;
}

.input-atelier:focus {
  border-color: var(--ink-primary);
}

/* ==========================================================================
   SCENT MATRIX & CATALOG
   ========================================================================== */
.catalog-section {
  padding: 6.5rem 0;
  position: relative;
}

.filter-bar-sticky {
  position: sticky;
  top: 72px;
  z-index: 35;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-line);
  padding: 1.1rem 0;
  margin-bottom: 3.5rem;
}

.filter-row-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.search-atelier-wrap {
  position: relative;
  flex: 1;
  max-width: 480px;
  min-width: 260px;
}

.search-atelier-wrap input {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-xs);
  padding: 0.75rem 1rem 0.75rem 2.6rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-primary);
  outline: none;
  transition: all 0.2s;
}

.search-atelier-wrap input:focus {
  border-color: var(--ink-primary);
}

.search-atelier-wrap svg {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--ink-muted);
}

.matrix-mood-chips {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: 0.2rem;
}

.matrix-mood-chips::-webkit-scrollbar {
  display: none;
}

.mood-chip {
  padding: 0.45rem 1.1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  border-radius: var(--radius-full);
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.2s;
  color: var(--ink-secondary);
}

.mood-chip:hover {
  border-color: var(--ink-primary);
  color: var(--ink-primary);
}

.mood-chip.active {
  background: var(--ink-primary);
  color: var(--bg-main);
  border-color: var(--ink-primary);
}

/* ==========================================================================
   FORMULA CARDS GRID (LE LABO SPEC FORMAT)
   ========================================================================== */
.catalog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.formula-card {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-sm);
  padding: 2.2rem 1.8rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.35s var(--ease);
  box-shadow: var(--shadow-subtle);
}

.formula-card:hover {
  transform: translateY(-5px);
  border-color: var(--ink-primary);
  box-shadow: var(--shadow-card);
}

.card-formula-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px dashed var(--border-line);
  padding-bottom: 0.6rem;
  margin-bottom: 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

.card-formula-header .formula-id {
  font-weight: 700;
  color: var(--accent-clay);
}

.card-formula-header .formula-house {
  color: var(--ink-muted);
}

.card-visual-frame {
  height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  margin-bottom: 1.4rem;
  background: var(--bg-card-subtle);
  border-radius: var(--radius-xs);
  padding: 1rem;
}

.card-visual-frame img {
  max-height: 100%;
  max-width: 80%;
  object-fit: contain;
  filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.1));
  transition: transform 0.4s var(--ease);
}

.formula-card:hover .card-visual-frame img {
  transform: scale(1.08) rotate(-1.5deg);
}

.card-formula-name {
  font-size: 1.6rem;
  line-height: 1.15;
  margin-bottom: 0.35rem;
}

.card-formula-concentration {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--ink-muted);
  margin-bottom: 1.2rem;
  display: block;
}

/* Accord Percentage Meters */
.accords-meter-list {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  margin-bottom: 1.5rem;
}

.accord-bar-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.68rem;
}

.accord-progress-bg {
  flex: 1;
  margin: 0 0.6rem;
  height: 4px;
  background: var(--border-line);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.accord-progress-fill {
  height: 100%;
  background: var(--ink-primary);
  border-radius: var(--radius-full);
}

/* Size Chips */
.card-size-row {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
}

.card-size-btn {
  flex: 1;
  padding: 0.45rem 0.2rem;
  border: 1px solid var(--border-line);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  border-radius: var(--radius-xs);
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  background: var(--bg-card);
}

.card-size-btn.active {
  background: var(--ink-primary);
  color: var(--bg-main);
  border-color: var(--ink-primary);
  font-weight: 600;
}

.card-size-btn.disabled {
  opacity: 0.35;
  pointer-events: none;
}

/* Card Actions */
.card-action-bar {
  margin-top: auto;
  border-top: 1px dashed var(--border-line);
  padding-top: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-price-val {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--ink-primary);
}

.btn-add-lab {
  background: var(--ink-primary);
  color: var(--bg-main);
  border-radius: var(--radius-xs);
  padding: 0.6rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.2s;
}

.btn-add-lab:hover {
  background: var(--accent-clay);
}

/* ==========================================================================
   DISCOVERY BOX MODULAR LAB (COMBO 15% OFF)
   ========================================================================== */
.discovery-lab-section {
  padding: 6.5rem 0;
  background: var(--bg-card-subtle);
  border-top: 1px solid var(--border-line);
  border-bottom: 1px solid var(--border-line);
}

.testtube-rack {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.8rem;
  margin: 3rem 0;
}

.tube-slot {
  background: var(--bg-card);
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 2.5rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 220px;
}

.tube-slot:hover {
  border-color: var(--ink-primary);
  background: var(--bg-surface);
}

.tube-slot.filled {
  border-style: solid;
  border-color: var(--ink-primary);
}

.tube-slot .plus-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  margin-bottom: 0.8rem;
}

/* ==========================================================================
   CART DRAWER & CONCIERGE
   ========================================================================== */
.drawer-backdrop {
  position: fixed;
  inset: 0;
  z-index: 120;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s var(--ease);
}

.drawer-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.lab-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  max-width: 460px;
  background: var(--bg-card);
  border-left: 1px solid var(--border-line);
  z-index: 125;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.4s var(--ease);
  box-shadow: var(--shadow-float);
}

.drawer-backdrop.open .lab-drawer {
  transform: translateX(0);
}

.drawer-header {
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--border-line);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.drawer-items-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.drawer-item-card {
  display: flex;
  gap: 1rem;
  border: 1px solid var(--border-line);
  border-radius: var(--radius-xs);
  padding: 0.9rem;
  background: var(--bg-card-subtle);
  position: relative;
}

.drawer-item-card img {
  width: 55px;
  height: 55px;
  object-fit: contain;
  background: var(--bg-card);
  padding: 4px;
}

.drawer-footer-checkout {
  border-top: 1px solid var(--border-line);
  padding: 1.5rem 2rem;
  background: var(--bg-card);
}

/* ==========================================================================
   MODAL: FORMULA DOSSIER SPEC
   ========================================================================== */
.modal-dossier-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4vh 4vw;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s;
}

.modal-dossier-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-dossier-card {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-md);
  max-width: 900px;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  position: relative;
  max-height: 88vh;
  overflow-y: auto;
  box-shadow: var(--shadow-float);
}

.dossier-left-gallery {
  background: var(--bg-card-subtle);
  border-right: 1px solid var(--border-line);
  padding: 3rem 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.dossier-left-gallery img {
  max-height: 320px;
  object-fit: contain;
  filter: drop-shadow(0 15px 30px rgba(0, 0, 0, 0.15));
}

.dossier-right-body {
  padding: 3rem 2.5rem;
  display: flex;
  flex-direction: column;
}

/* Floating WhatsApp Concierge */
.wa-atelier-concierge {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 65;
  background: var(--ink-primary);
  color: var(--bg-main);
  padding: 0.8rem 1.4rem;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  box-shadow: var(--shadow-float);
  transition: transform 0.3s;
}

.wa-atelier-concierge:hover {
  transform: scale(1.05) translateY(-2px);
  background: var(--accent-clay);
}

/* ==========================================================================
   RESPONSIVE DESIGN BREAKPOINTS
   ========================================================================== */
@media (max-width: 1100px) {
  .catalog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 820px) {
  .nav-menu {
    display: none;
  }
  .beaker-layout, .label-builder-box {
    grid-template-columns: 1fr;
  }
  .modal-dossier-card {
    grid-template-columns: 1fr;
  }
  .dossier-left-gallery {
    border-right: none;
    border-bottom: 1px solid var(--border-line);
  }
}

@media (max-width: 600px) {
  .catalog-grid {
    grid-template-columns: 1fr;
  }
  .testtube-rack {
    grid-template-columns: 1fr;
  }
}