/* ============================================================
   Brand Guidelines v6 — David Capiello
   Dual Asset Edition. Layout mirrors v4 exactly.
   Hero: Copper Bronze (-4). Variant panels: 3D Gold (-5).
   Dark luxury — no raster filters.
   ============================================================ */

/* ── Tokens ─────────────────────────────────────────────── */
:root {
  --b6-ink:        #0a0a09;
  --b6-stone:      #131310;
  --b6-charcoal:   #1c1c19;
  --b6-surface:    #242420;
  --b6-border:     rgba(208,173,106,.12);
  --b6-border-lg:  rgba(208,173,106,.22);

  --b6-gold:       #d0ad6a;
  --b6-gold-hi:    #fdedc9;
  --b6-gold-mid:   #a77f41;
  --b6-gold-dk:    #663500;
  --b6-stroke:     #95724a;

  --b6-cream:      #f5f0e6;
  --b6-cream-dk:   #e8e0cf;
  --b6-navy:       #0d1b2e;
  --b6-white:      #ffffff;

  --b6-text:       rgba(245,240,230,.82);
  --b6-muted:      rgba(245,240,230,.38);
  --b6-label:      rgba(208,173,106,.55);

  --b6-font-serif: 'Cormorant Garamond', Georgia, serif;
  --b6-font-sans:  'Gill Sans', 'Gill Sans MT', Calibri, sans-serif;

  --b6-max:        1180px;
  --b6-gutter:     clamp(24px, 5vw, 72px);
  --b6-radius:     3px;
}

/* ── Reset / Base ─────────────────────────────────────── */
.b6-page *, .b6-page *::before, .b6-page *::after { box-sizing: border-box; margin: 0; padding: 0; }
.b6-page { background: var(--b6-ink); color: var(--b6-text); font-family: var(--b6-font-sans); line-height: 1.6; -webkit-font-smoothing: antialiased; }
.b6-page img { display: block; max-width: 100%; height: auto; }
.b6-page a { color: var(--b6-gold); text-decoration: none; }

/* ── Smooth rendering — raster-embedded SVG ──────────── */
.b6-page img {
  image-rendering: -webkit-optimize-contrast;
  image-rendering: smooth;
  -webkit-transform: translateZ(0);
  transform: translateZ(0);
  backface-visibility: hidden;
}

/* ── Layout helpers ───────────────────────────────────── */
.b6-container { max-width: var(--b6-max); margin: 0 auto; padding: 0 var(--b6-gutter); }
.b6-section   { padding: clamp(72px, 10vw, 120px) 0; border-top: 1px solid var(--b6-border); }
.b6-section:first-of-type { border-top: none; }

/* ── Section labels ───────────────────────────────────── */
.b6-eyebrow {
  font-family: var(--b6-font-sans);
  font-size: 10px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--b6-label);
  margin-bottom: 12px;
}
.b6-section-title {
  font-family: var(--b6-font-serif);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 300;
  color: var(--b6-cream);
  line-height: 1.15;
  margin-bottom: clamp(40px, 6vw, 72px);
}
.b6-section-title em { font-style: italic; color: var(--b6-gold); }

/* ═══════════════════════════════════════════════════════════
   HERO — Copper Bronze (-4) master mark
   ═══════════════════════════════════════════════════════════ */
.b6-hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: clamp(60px, 10vw, 120px) var(--b6-gutter);
  background: var(--b6-ink);
  position: relative;
  overflow: hidden;
}
.b6-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 50% at 50% 52%, rgba(208,173,106,.07) 0%, transparent 70%);
  pointer-events: none;
}
.b6-hero__eyebrow {
  font-size: 9px;
  letter-spacing: .35em;
  text-transform: uppercase;
  color: rgba(245,240,230,.22);
  text-align: center;
  margin-bottom: 52px;
}
.b6-hero__logo {
  width: min(920px, 95vw);
  margin: 0 auto 56px;
  position: relative;
}
.b6-hero__logo img { width: 100%; }
.b6-hero__sub {
  font-family: var(--b6-font-sans);
  font-size: clamp(10px, 1.2vw, 12px);
  letter-spacing: .35em;
  text-transform: uppercase;
  color: var(--b6-muted);
}
.b6-hero__scroll {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--b6-muted);
  font-size: 9px;
  letter-spacing: .25em;
  text-transform: uppercase;
}
.b6-hero__scroll::after {
  content: '';
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--b6-gold-mid), transparent);
}

/* ═══════════════════════════════════════════════════════════
   §01 — PRIMARY MARK (Copper Bronze -4)
   ═══════════════════════════════════════════════════════════ */
.b6-marks {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
}
.b6-mark-panel {
  padding: clamp(36px, 5vw, 64px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  min-height: 320px;
  justify-content: center;
}
.b6-mark-panel--charcoal { background: var(--b6-charcoal); }
.b6-mark-panel--cream    { background: var(--b6-cream); }
.b6-mark-panel--navy     { background: var(--b6-navy); }
.b6-mark-panel--white    { background: var(--b6-white); }

.b6-mark-panel__logo { width: min(420px, 80%); }
/* No filter — natural copper-bronze renders on all grounds */

.b6-mark-panel__label {
  font-size: 9px;
  letter-spacing: .22em;
  text-transform: uppercase;
}
.b6-mark-panel--charcoal .b6-mark-panel__label { color: var(--b6-label); }
.b6-mark-panel--cream    .b6-mark-panel__label { color: rgba(0,0,0,.35); }
.b6-mark-panel--navy     .b6-mark-panel__label { color: rgba(255,255,255,.3); }
.b6-mark-panel--white    .b6-mark-panel__label { color: rgba(0,0,0,.3); }

/* ── Flat Color section separator ──────────────────────── */
.b6-flat-intro { margin-bottom: 3px; margin-top: 3px; }
.b6-flat-label {
  font-size: 9px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--b6-label);
  padding: 18px var(--b6-gutter);
  background: var(--b6-stone);
  display: flex;
  align-items: center;
  gap: 16px;
}
.b6-flat-label::before {
  content: '';
  width: 28px;
  height: 1px;
  background: rgba(208,173,106,.35);
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════════════════════
   §02 — MONOGRAM (Copper Bronze hero + 3D Gold strip)
   ═══════════════════════════════════════════════════════════ */
.b6-monogram-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 100px);
  align-items: center;
}
.b6-monogram__icon {
  display: flex;
  align-items: center;
  justify-content: center;
}
.b6-monogram__icon img { width: min(320px, 100%); }
.b6-monogram__letter {
  font-family: var(--b6-font-serif);
  font-size: clamp(5rem, 12vw, 9rem);
  font-weight: 300;
  font-style: italic;
  color: var(--b6-gold);
  opacity: .18;
  line-height: 1;
  margin-bottom: 24px;
  letter-spacing: -.02em;
}
.b6-monogram__desc {
  font-size: clamp(14px, 1.5vw, 16px);
  color: var(--b6-text);
  line-height: 1.75;
  margin-bottom: 36px;
}
.b6-monogram__uses {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.b6-monogram__uses li {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13px;
  color: var(--b6-muted);
  letter-spacing: .04em;
}
.b6-monogram__uses li::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--b6-gold-mid);
  flex-shrink: 0;
}

/* Monogram variant strip — 3D Gold (-5) */
.b6-mono-variants {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
  margin-top: clamp(48px, 6vw, 80px);
}
.b6-mono-variant {
  padding: 36px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}
.b6-mono-variant--dark   { background: var(--b6-charcoal); }
.b6-mono-variant--cream  { background: var(--b6-cream); }
.b6-mono-variant--navy   { background: var(--b6-navy); }
.b6-mono-variant--stone  { background: var(--b6-surface); }

.b6-mono-variant img { width: min(100px, 60%); }
/* No filter — natural 3D gold on all backgrounds */

.b6-mono-variant__name {
  font-size: 9px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--b6-muted);
}
.b6-mono-variant--cream .b6-mono-variant__name { color: rgba(0,0,0,.3); }

/* ═══════════════════════════════════════════════════════════
   §03 — COLOR SYSTEM
   ═══════════════════════════════════════════════════════════ */
.b6-palette {
  display: flex;
  flex-direction: column;
  gap: 48px;
}
.b6-palette__group-label {
  font-size: 9px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--b6-muted);
  margin-bottom: 16px;
}
.b6-swatches {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 2px;
}
.b6-swatch { display: flex; flex-direction: column; }
.b6-swatch__color { height: 100px; border-radius: var(--b6-radius) var(--b6-radius) 0 0; }
.b6-swatch__info { padding: 14px 16px; background: var(--b6-charcoal); border-radius: 0 0 var(--b6-radius) var(--b6-radius); }
.b6-swatch__name { font-size: 11px; font-weight: 500; color: var(--b6-text); margin-bottom: 2px; }
.b6-swatch__hex { font-size: 10px; letter-spacing: .1em; color: var(--b6-muted); font-family: 'SF Mono', 'Fira Mono', monospace; text-transform: uppercase; }
.b6-gold-bar {
  height: 64px;
  border-radius: var(--b6-radius);
  background: linear-gradient(to right, #663500, #a77f41, #d0ad6a, #fdedc9, #d0ad6a, #a77f41, #663500);
  margin-bottom: 20px;
}
.b6-gold-stops { display: grid; grid-template-columns: repeat(5, 1fr); gap: 2px; }

/* ═══════════════════════════════════════════════════════════
   §04 — TYPOGRAPHY
   ═══════════════════════════════════════════════════════════ */
.b6-type-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 5vw, 80px); }
.b6-type-block__label {
  font-size: 9px; letter-spacing: .22em; text-transform: uppercase;
  color: var(--b6-label); margin-bottom: 20px; padding-bottom: 12px;
  border-bottom: 1px solid var(--b6-border);
}
.b6-type-specimen {
  font-family: var(--b6-font-serif); font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 300; line-height: 1.1; color: var(--b6-cream); margin-bottom: 20px;
}
.b6-type-specimen--italic { font-style: italic; color: var(--b6-gold); }
.b6-type-meta { font-size: 11px; color: var(--b6-muted); letter-spacing: .05em; line-height: 2; }
.b6-type-abc { font-family: var(--b6-font-sans); font-size: clamp(1rem, 2vw, 1.3rem); color: var(--b6-text); line-height: 1.8; margin-top: 24px; }

/* ═══════════════════════════════════════════════════════════
   §05 — CLEARSPACE & SIZING
   ═══════════════════════════════════════════════════════════ */
.b6-clearspace { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 6vw, 100px); align-items: start; }
.b6-clearspace__diagram { background: var(--b6-charcoal); border-radius: var(--b6-radius); padding: clamp(32px, 5%, 56px); position: relative; }
.b6-clearspace__zone {
  border: 1.5px dashed rgba(208,173,106,.3);
  padding: clamp(20px, 4%, 36px);
  display: flex; align-items: center; justify-content: center;
  border-radius: 2px; position: relative;
}
.b6-clearspace__zone img { width: 100%; }
.b6-clearspace__tick { position: absolute; font-size: 9px; letter-spacing: .18em; text-transform: uppercase; color: rgba(208,173,106,.45); }
.b6-clearspace__tick--top    { top: -20px; left: 50%; transform: translateX(-50%); }
.b6-clearspace__tick--bottom { bottom: -20px; left: 50%; transform: translateX(-50%); }
.b6-clearspace__tick--left   { left: -36px; top: 50%; transform: translateY(-50%) rotate(-90deg); }
.b6-rule-item { padding: 20px 0; border-bottom: 1px solid var(--b6-border); display: flex; flex-direction: column; gap: 6px; }
.b6-rule-item:first-child { padding-top: 0; }
.b6-rule-item__label { font-size: 9px; letter-spacing: .22em; text-transform: uppercase; color: var(--b6-label); }
.b6-rule-item__value { font-family: var(--b6-font-serif); font-size: 1.5rem; font-weight: 300; color: var(--b6-cream); }
.b6-rule-item__note { font-size: 12px; color: var(--b6-muted); line-height: 1.6; }

/* ═══════════════════════════════════════════════════════════
   §06 — ASSETS
   ═══════════════════════════════════════════════════════════ */
.b6-downloads { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 2px; }
.b6-download {
  background: var(--b6-charcoal);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  cursor: pointer;
  text-decoration: none;
  transition: background .18s ease;
}
.b6-download:hover { background: var(--b6-surface); }
.b6-download__ext { font-family: 'SF Mono', monospace; font-size: 10px; letter-spacing: .2em; color: var(--b6-gold); text-transform: uppercase; }
.b6-download__name { font-size: 14px; color: var(--b6-text); font-weight: 400; }
.b6-download__desc { font-size: 11px; color: var(--b6-muted); line-height: 1.6; flex: 1; }
.b6-download__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 4px;
}
.b6-download__size { font-size: 10px; color: rgba(208,173,106,.35); font-family: monospace; letter-spacing: .05em; }
.b6-download__arrow {
  font-size: 9px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: rgba(208,173,106,.45);
  transition: color .18s ease;
}
.b6-download:hover .b6-download__arrow { color: var(--b6-gold); }

/* ═══════════════════════════════════════════════════════════
   PAGE FOOTER
   ═══════════════════════════════════════════════════════════ */
.b6-footer {
  border-top: 1px solid var(--b6-border);
  padding: 48px var(--b6-gutter);
  max-width: var(--b6-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.b6-footer__copy { font-size: 11px; color: var(--b6-muted); letter-spacing: .04em; }
.b6-footer__version { font-size: 10px; font-family: monospace; color: rgba(208,173,106,.25); letter-spacing: .1em; }

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════ */
@media (max-width: 780px) {
  .b6-marks           { grid-template-columns: 1fr; }
  .b6-monogram-grid   { grid-template-columns: 1fr; }
  .b6-monogram__icon  { order: -1; }
  .b6-type-grid       { grid-template-columns: 1fr; }
  .b6-clearspace      { grid-template-columns: 1fr; }
  .b6-mono-variants   { grid-template-columns: 1fr 1fr; }
  .b6-footer          { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 480px) {
  .b6-mono-variants   { grid-template-columns: 1fr 1fr; }
  .b6-swatches        { grid-template-columns: 1fr 1fr; }
}