/* ================================================
   Ubden® Marka Merkezi (/branding)
   ================================================
   Bolumler: hero + 3B sahne, anatomi (plan cizimi), logo galerisi,
   is ortaklari, renkler, yazi tipleri, kurallar, basin, son cagri.
   Onizleme zeminleri temadan bagimsizdir: her logo kendi zemininde
   gosterilir (acik logo koyu zeminde, koyu logo acik zeminde). */

.page-brand {
  --bk-night: #05060F;
  --bk-paper: #F4F6FD;
  --bk-spectrum: linear-gradient(120deg, #00D4FF 0%, #7C3AED 45%, #10B981 100%);
  --bk-line: rgba(0, 212, 255, 0.55);
}

/* ---------- Hero ---------- */
.bk-hero { padding-bottom: clamp(3rem, 7vw, 5.5rem); }
.bk-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  gap: clamp(2rem, 4vw, 3.5rem);
  align-items: center;
}
.bk-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.42rem 1rem 0.42rem 0.75rem;
  margin-bottom: var(--space-3);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--surface);
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.bk-eyebrow-dot {
  position: relative;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--bk-spectrum);
}
.bk-eyebrow-dot::after {
  content: '';
  position: absolute; inset: -4px;
  border-radius: 50%;
  border: 1px solid var(--brand-cyan);
  animation: bkPing 2.4s var(--ease-out) infinite;
}
@keyframes bkPing { 0% { transform: scale(0.6); opacity: 0.9; } 100% { transform: scale(2.2); opacity: 0; } }

.bk-hero-title { font-size: clamp(2.4rem, 5.6vw, 4.4rem); line-height: 1.04; max-width: 13ch; }
.bk-hero .page-hero-subtitle { max-width: 560px; margin-bottom: var(--space-4); }
.bk-hero-cta { display: flex; flex-wrap: wrap; gap: 0.8rem; align-items: center; }
.bk-hero .bk-hero-cta .btn-lg { padding: 0.95rem 1.6rem; font-size: 1.02rem; }
.bk-hero .bk-hero-cta,
.bk-hero .bk-hero-stats { animation: bkRise 0.9s var(--ease-cine) both; animation-delay: 0.6s; }
.bk-hero .bk-hero-stats { animation-delay: 0.78s; }
@keyframes bkRise { from { opacity: 0; transform: translateY(22px); } }
.bk-kit-btn small {
  margin-left: 0.35rem;
  padding-left: 0.7rem;
  border-left: 1px solid rgba(255, 255, 255, 0.35);
  font-size: 0.74em;
  font-weight: 500;
  opacity: 0.85;
  letter-spacing: 0.02em;
}
.bk-hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(1.4rem, 4vw, 3rem);
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--border);
}
.bk-hero-stats li { display: flex; flex-direction: column; gap: 0.15rem; }
.bk-hero-stats strong {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
  font-weight: 800;
  line-height: 1;
  background: var(--bk-spectrum);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.bk-hero-stats span { font-size: 0.85rem; color: var(--text-muted); }

/* Sahne */
.bk-stage {
  position: relative;
  aspect-ratio: 1;
  width: 100%;
  max-width: 560px;
  justify-self: center;
  isolation: isolate;
}
.bk-stage-rings { position: absolute; inset: 0; z-index: -1; }
.bk-stage-rings span {
  position: absolute;
  inset: 6%;
  border-radius: 50%;
  border: 1px solid transparent;
  background: conic-gradient(from 0deg, transparent 0 62%, rgba(0, 212, 255, 0.7), rgba(124, 58, 237, 0.75), transparent 92%) border-box;
  -webkit-mask: linear-gradient(#000 0 0) padding-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) padding-box exclude, linear-gradient(#000 0 0);
  animation: bkSpin 14s linear infinite;
}
.bk-stage-rings span:nth-child(2) { inset: 15%; animation-duration: 22s; animation-direction: reverse; opacity: 0.7; }
.bk-stage-rings span:nth-child(3) {
  inset: 24%;
  animation-duration: 30s;
  opacity: 0.5;
  background: conic-gradient(from 90deg, transparent 0 55%, rgba(16, 185, 129, 0.8), transparent 85%) border-box;
}
@keyframes bkSpin { to { transform: rotate(360deg); } }

.bk-stage::before {
  content: '';
  position: absolute;
  inset: 18%;
  z-index: -2;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.42), rgba(0, 212, 255, 0.16) 45%, transparent 70%);
  filter: blur(40px);
  animation: bkBreath 7s ease-in-out infinite;
}
@keyframes bkBreath { 50% { transform: scale(1.12); opacity: 0.75; } }

.bk-stage-poster {
  position: absolute;
  left: 50%; top: 50%;
  width: 58%;
  transform: translate(-50%, -52%);
  overflow: visible;
  filter: drop-shadow(0 18px 40px rgba(124, 58, 237, 0.35));
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}
.bk-poster-box,
.bk-poster-letters {
  fill: url(#bkSpectrum);
  fill-opacity: 0;
  stroke: url(#bkSpectrum);
  stroke-width: 14;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  animation: bkDraw 2.2s var(--ease-cine) 0.3s forwards, bkFill 1.2s ease 1.9s forwards;
}
.bk-poster-letters { fill: var(--text); stroke: var(--text); animation-delay: 0.7s, 2.2s; }
@keyframes bkDraw { to { stroke-dashoffset: 0; } }
@keyframes bkFill { to { fill-opacity: 1; stroke-width: 0; } }

.bk-stage-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1.2s var(--ease-out);
}
.bk-stage.is-live .bk-stage-canvas { opacity: 1; }
.bk-stage.is-live .bk-stage-poster { opacity: 0; transform: translate(-50%, -52%) scale(0.92); }
.bk-stage-floor {
  position: absolute;
  left: 18%; right: 18%; bottom: 6%;
  height: 12%;
  z-index: -1;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(0, 212, 255, 0.32), transparent 70%);
  filter: blur(14px);
}

/* ---------- Anatomi ---------- */
.bk-anatomy-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}
.bk-blueprint {
  position: relative;
  margin: 0;
  padding: clamp(1rem, 2.4vw, 1.6rem);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(rgba(0, 212, 255, 0.06) 1px, transparent 1px) 0 0 / 28px 28px,
    linear-gradient(90deg, rgba(0, 212, 255, 0.06) 1px, transparent 1px) 0 0 / 28px 28px,
    radial-gradient(120% 90% at 20% 0%, rgba(124, 58, 237, 0.22), transparent 60%),
    var(--bk-night);
  border: 1px solid rgba(0, 212, 255, 0.22);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.45), inset 0 0 0 1px rgba(255, 255, 255, 0.03);
  color: #eef1fb;
  overflow: hidden;
}
.bk-blueprint-toggles {
  display: inline-flex;
  gap: 0.3rem;
  padding: 0.3rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
}
.bk-toggle {
  padding: 0.45rem 1rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  color: rgba(238, 241, 251, 0.7);
  transition: background var(--transition), color var(--transition);
}
.bk-toggle:hover { color: #fff; }
.bk-toggle[aria-pressed="true"] { background: rgba(0, 212, 255, 0.16); color: #fff; box-shadow: inset 0 0 0 1px rgba(0, 212, 255, 0.45); }
.bk-blueprint-canvas { position: relative; aspect-ratio: 9153 / 4098; margin-top: 0.8rem; }
.bk-blueprint-logo {
  position: absolute;
  left: 10.925%; top: 24.4%;
  width: 78.15%;
  height: auto;
}
.bk-blueprint-svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.bk-blueprint-svg > g { opacity: 0; transition: opacity 0.5s var(--ease-out); }
.bk-blueprint.show-parts .bk-bp-parts,
.bk-blueprint.show-grid .bk-bp-grid,
.bk-blueprint.show-space .bk-bp-space { opacity: 1; }
html:not(.bk-js) .bk-bp-parts { opacity: 1; }
.bk-bp-text { font-family: var(--font-heading); font-size: 140px; font-weight: 600; fill: rgba(0, 212, 255, 0.9); letter-spacing: 0.04em; }
.bk-bp-grid line,
.bk-bp-grid .bk-bp-circle {
  fill: none;
  stroke: var(--bk-line);
  stroke-width: 14;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset 1.4s var(--ease-cine);
}
.bk-blueprint.show-grid .bk-bp-grid line,
.bk-blueprint.show-grid .bk-bp-grid .bk-bp-circle { stroke-dashoffset: 0; }
.bk-bp-grid .bk-bp-circle { stroke: rgba(16, 185, 129, 0.75); stroke-width: 12; }
.bk-bp-stem { fill: rgba(245, 158, 11, 0.22); stroke: #F59E0B; stroke-width: 12; }
.bk-bp-zone { fill: rgba(124, 58, 237, 0.18); stroke: rgba(167, 139, 250, 0.8); stroke-width: 14; stroke-dasharray: 60 40; }
.bk-bp-logo { fill: var(--bk-night); stroke: rgba(167, 139, 250, 0.8); stroke-width: 10; }
.bk-bp-space { mix-blend-mode: normal; }
.bk-bp-arrow { stroke: #a78bfa; stroke-width: 12; fill: none; }
.bk-bp-space .bk-bp-text { fill: #c4b5fd; }
.bk-bp-pin line { stroke: rgba(255, 255, 255, 0.55); stroke-width: 10; stroke-dasharray: 30 26; }
.bk-bp-pin circle { fill: var(--bk-night); stroke: #00D4FF; stroke-width: 18; }
.bk-bp-pin text { font-family: var(--font-display); font-weight: 800; font-size: 250px; fill: #fff; }
.bk-blueprint.show-parts .bk-bp-pin { animation: bkPin 0.6s var(--ease-out) both; animation-delay: calc(var(--i) * 0.09s); }
@keyframes bkPin { from { opacity: 0; transform: translateY(-120px); } }
.bk-blueprint.show-space .bk-blueprint-logo { z-index: 1; }

.bk-parts { display: grid; gap: 0.6rem; }
.bk-part {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  padding: 1rem 1.1rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  transition: border-color var(--transition), transform var(--transition), background var(--transition);
}
.bk-part:hover { border-color: rgba(0, 212, 255, 0.45); transform: translateX(4px); background: var(--surface-strong); }
.bk-part-num {
  display: grid;
  place-items: center;
  width: 2.3rem; height: 2.3rem;
  border-radius: 50%;
  font-family: var(--font-display);
  font-weight: 800;
  color: #fff;
  background: var(--bk-spectrum);
  box-shadow: 0 6px 18px rgba(124, 58, 237, 0.35);
}
.bk-part h3 { font-family: var(--font-heading); font-size: 1.05rem; margin-bottom: 0.2rem; }
.bk-part p { font-size: 0.92rem; color: var(--text-muted); line-height: 1.55; }

/* ---------- Galeri ---------- */
.bk-gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1rem, 2.2vw, 1.5rem);
}
.bk-card { display: flex; flex-direction: column; }
.bk-card--wide { grid-column: span 2; }
.bk-card-stage {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 230px;
  padding: clamp(1.4rem, 3vw, 2.4rem);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
  transition: background-color 0.5s var(--ease-out);
}
.bk-card-stage[data-stage="light"] {
  background:
    radial-gradient(rgba(12, 18, 38, 0.08) 1px, transparent 1px) 0 0 / 18px 18px,
    var(--bk-paper);
}
.bk-card-stage[data-stage="dark"] {
  background:
    radial-gradient(rgba(255, 255, 255, 0.07) 1px, transparent 1px) 0 0 / 18px 18px,
    radial-gradient(80% 90% at 50% 110%, rgba(124, 58, 237, 0.28), transparent 70%),
    var(--bk-night);
}
.bk-card-glow {
  position: absolute;
  inset: -40%;
  background: conic-gradient(from 0deg, transparent, rgba(0, 212, 255, 0.18), transparent 30%, rgba(124, 58, 237, 0.2), transparent 60%);
  opacity: 0;
  transition: opacity 0.6s var(--ease-out);
  pointer-events: none;
}
.bk-card:hover .bk-card-glow { opacity: 1; animation: bkSpin 9s linear infinite; }
.bk-art {
  position: relative;
  grid-area: 1 / 1;
  width: auto;
  max-width: 82%;
  max-height: 150px;
  height: auto;
  transition: transform 0.6s var(--ease-cine), opacity 0.4s;
}
.bk-card--wide .bk-art { max-width: 72%; max-height: 170px; }
.bk-card[data-bk-card="avatar"] .bk-art,
.bk-card[data-bk-card="app-icon"] .bk-art { max-height: 140px; }
.bk-card:hover .bk-art { transform: scale(1.045); }
.bk-js .bk-art[data-inactive] { display: none; }
.bk-art.is-swap { animation: bkSwap 0.5s var(--ease-cine); }
@keyframes bkSwap { from { opacity: 0; transform: translateY(10px) scale(0.97); } }

.bk-card-body { display: flex; flex-direction: column; gap: 0.75rem; padding: 1.2rem 1.3rem 1.35rem; flex: 1; }
.bk-card-title { font-family: var(--font-heading); font-size: 1.12rem; }
.bk-card-use { font-size: 0.9rem; color: var(--text-muted); line-height: 1.55; }
.bk-card-use:empty { display: none; }
.bk-variants { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.bk-variant {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.8rem 0.35rem 0.45rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}
.bk-variant:hover { color: var(--text); border-color: var(--border-strong); }
.bk-variant[aria-pressed="true"] { color: var(--text); border-color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, transparent); }
.bk-variant-dot { width: 16px; height: 16px; border-radius: 50%; box-shadow: inset 0 0 0 1px rgba(127, 135, 160, 0.55); }
.bk-dot--on-light, .bk-dot--light, .bk-dot--white { background: var(--bk-paper); }
.bk-dot--on-dark, .bk-dot--dark, .bk-dot--night { background: var(--bk-night); }
.bk-dot--spectrum { background: var(--bk-spectrum); }
.bk-dot--white { background: #fff; }

.bk-dl { display: flex; flex-wrap: wrap; gap: 0.45rem; margin-top: auto; }
.bk-js .bk-dl[data-inactive] { display: none; }
.bk-dl-label { flex-basis: 100%; font-size: 0.72rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-faint); }
.bk-js .bk-dl-label { display: none; }
.bk-file {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  gap: 0.05rem;
  min-width: 4.4rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  text-decoration: none;
  color: var(--text);
  transition: transform var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition);
}
.bk-file strong { display: flex; align-items: baseline; gap: 0.3rem; font-family: var(--font-heading); font-size: 0.86rem; letter-spacing: 0.04em; }
.bk-file strong em { font-style: normal; font-size: 0.7rem; font-weight: 500; color: var(--text-faint); }
.bk-file span { font-size: 0.72rem; color: var(--text-muted); }
.bk-file::before {
  content: '';
  position: absolute;
  left: 0.75rem; right: 0.75rem; top: -1px;
  height: 2px;
  border-radius: 2px;
  background: var(--bk-spectrum);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease-out);
}
.bk-file:hover,
.bk-file:focus-visible { transform: translateY(-3px); border-color: var(--border-strong); background: var(--surface-strong); box-shadow: var(--shadow-glow-cyan); }
.bk-file:hover::before,
.bk-file:focus-visible::before { transform: scaleX(1); }
.bk-file.is-done strong::after { content: '✓'; color: var(--brand-green); margin-left: 0.2rem; }
.bk-hint { margin-top: var(--space-3); text-align: center; font-size: 0.88rem; color: var(--text-muted); }

/* ---------- Is ortaklari ---------- */
.bk-partner { overflow: hidden; }
.bk-partner-aurora {
  position: absolute;
  inset: 10% -10% auto;
  height: 70%;
  background:
    radial-gradient(40% 50% at 20% 40%, rgba(0, 212, 255, 0.14), transparent 70%),
    radial-gradient(40% 50% at 80% 30%, rgba(124, 58, 237, 0.18), transparent 70%),
    radial-gradient(35% 45% at 55% 80%, rgba(16, 185, 129, 0.12), transparent 70%);
  filter: blur(30px);
  animation: auroraDrift 26s ease-in-out infinite;
  pointer-events: none;
}
.bk-partner .container { position: relative; }
.bk-kind-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: var(--space-3);
}
.bk-kind-tab {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.7rem 1.3rem 0.7rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--text-muted);
  transition: color var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.bk-kind-tab:hover { color: var(--text); transform: translateY(-2px); }
.bk-kind-tab[aria-selected="true"] { color: var(--text); border-color: transparent; background: linear-gradient(var(--bg-raised), var(--bg-raised)) padding-box, var(--bk-spectrum) border-box; box-shadow: var(--shadow-glow-purple); }
.bk-kind-mono {
  display: grid;
  place-items: center;
  width: 2rem; height: 1.7rem;
  border: 2px solid currentColor;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.82rem;
  letter-spacing: -0.04em;
  line-height: 1;
}
.bk-kind-tab[aria-selected="true"] .bk-kind-mono { color: var(--accent); }
.bk-kind-use { text-align: center; max-width: 640px; margin: 0 auto var(--space-3); color: var(--text-muted); }
.bk-js .bk-kind-panel[data-inactive] { display: none; }
.bk-kind-panel { animation: bkSwap 0.55s var(--ease-cine); }
html:not(.bk-js) .bk-kind-panel + .bk-kind-panel { margin-top: var(--space-5); }
.bk-gallery--partner { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.bk-card--partner .bk-card-stage { min-height: 250px; }
.bk-card--partner .bk-art { max-width: 86%; max-height: 120px; }

.bk-snippet { margin-top: clamp(1rem, 2.2vw, 1.5rem); padding: 1.3rem 1.4rem; }
.bk-snippet-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; margin-bottom: 0.9rem; }
.bk-snippet h3 { font-family: var(--font-heading); font-size: 1.05rem; margin-bottom: 0.25rem; }
.bk-snippet p { font-size: 0.9rem; color: var(--text-muted); max-width: 60ch; }
.bk-code {
  margin: 0;
  padding: 1rem 1.1rem;
  border-radius: var(--radius-sm);
  background: var(--bk-night);
  border: 1px solid rgba(0, 212, 255, 0.2);
  color: #b9f3ff;
  font: 0.82rem/1.6 ui-monospace, SFMono-Regular, Consolas, 'Liberation Mono', monospace;
  overflow-x: auto;
  white-space: pre;
}

.bk-partner-foot {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(1rem, 2.2vw, 1.5rem);
  margin-top: var(--space-4);
  align-items: stretch;
}
.bk-eligibility {
  display: flex;
  gap: 0.9rem;
  padding: 1.2rem 1.3rem;
  border-radius: var(--radius);
  border: 1px solid color-mix(in srgb, var(--brand-orange) 45%, transparent);
  background: color-mix(in srgb, var(--brand-orange) 8%, transparent);
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--text-muted);
}
.bk-eligibility svg { flex-shrink: 0; color: var(--brand-orange); margin-top: 0.1rem; }
.bk-partner-actions { display: flex; flex-direction: column; gap: 0.8rem; }
.bk-partner-actions .btn { align-self: flex-start; }
.bk-partner-actions .btn small { margin-left: 0.3rem; opacity: 0.85; font-weight: 500; font-size: 0.8em; }
.bk-apply {
  display: grid;
  gap: 0.2rem;
  padding: 1rem 1.2rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  text-decoration: none;
  color: var(--text);
  transition: border-color var(--transition), transform var(--transition);
}
.bk-apply:hover { border-color: var(--accent); transform: translateY(-2px); }
.bk-apply strong { font-family: var(--font-heading); }
.bk-apply span { font-size: 0.88rem; color: var(--text-muted); }
.bk-apply em { display: inline-flex; align-items: center; gap: 0.35rem; font-style: normal; font-weight: 600; font-size: 0.9rem; color: var(--accent); margin-top: 0.2rem; }

/* ---------- Renkler ---------- */
.bk-swatches {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(0.8rem, 1.8vw, 1.2rem);
}
.bk-swatch {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.bk-swatch:hover { transform: translateY(-6px); box-shadow: 0 20px 40px color-mix(in srgb, var(--sw) 30%, transparent); }
.bk-swatch-chip {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-end;
  gap: 0.15rem;
  min-height: 170px;
  padding: 1rem 1.1rem;
  text-align: left;
  background: var(--sw);
  color: #05060F;
  overflow: hidden;
  cursor: copy;
}
.bk-swatch.is-dark .bk-swatch-chip { color: #fff; }
.bk-swatch--white .bk-swatch-chip,
.bk-swatch--paper .bk-swatch-chip { box-shadow: inset 0 -1px 0 var(--border); }
.bk-swatch-chip::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 30%, rgba(255, 255, 255, 0.35) 50%, transparent 70%);
  transform: translateX(-120%);
  transition: transform 0.8s var(--ease-out);
}
.bk-swatch:hover .bk-swatch-chip::after { transform: translateX(120%); }
.bk-swatch-role { font-size: 0.7rem; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; opacity: 0.72; margin-bottom: auto; }
.bk-swatch-name { font-family: var(--font-display); font-weight: 800; font-size: 1.25rem; }
.bk-swatch-hex { font: 600 0.9rem/1.2 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: 0.04em; }
.bk-swatch-chip:focus-visible { outline: 3px solid var(--accent); outline-offset: -3px; }
.bk-swatch-codes { display: grid; grid-template-columns: 1fr 1fr; gap: 0.4rem; padding: 0.8rem 1.1rem; font-size: 0.78rem; }
.bk-swatch-codes dt { color: var(--text-muted); font-weight: 600; letter-spacing: 0.08em; font-size: 0.68rem; }
.bk-swatch-codes dd { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; color: var(--text-muted); }

.bk-spectrum {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: clamp(1rem, 3vw, 2.4rem);
  align-items: center;
  margin-top: var(--space-4);
}
.bk-spectrum-bar {
  position: relative;
  height: clamp(90px, 12vw, 140px);
  border-radius: var(--radius-lg);
  background: linear-gradient(120deg, #00D4FF 0%, #7C3AED 45%, #10B981 100%, #00D4FF 145%, #7C3AED 190%);
  background-size: 200% 100%;
  animation: bkFlow 9s linear infinite;
  box-shadow: 0 24px 60px rgba(124, 58, 237, 0.35);
  overflow: hidden;
}
.bk-spectrum-bar span {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.12) 0 1px, transparent 1px 22px);
  mix-blend-mode: overlay;
}
@keyframes bkFlow { to { background-position: -200% 0; } }
.bk-spectrum-text h3 { font-family: var(--font-display); font-size: 1.4rem; margin-bottom: 0.4rem; }
.bk-spectrum-text p { color: var(--text-muted); margin-bottom: 0.7rem; }
.bk-spectrum-text code {
  display: inline-block;
  padding: 0.45rem 0.7rem;
  border-radius: 8px;
  background: var(--surface-strong);
  font: 0.78rem/1.4 ui-monospace, SFMono-Regular, Consolas, monospace;
  color: var(--text-muted);
  word-break: break-word;
}

/* ---------- Yazi tipleri ---------- */
.bk-tester {
  display: flex;
  align-items: center;
  gap: 1rem;
  max-width: 720px;
  margin: 0 auto var(--space-4);
  padding: 0.5rem 0.5rem 0.5rem 1.3rem;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
}
.bk-tester span { flex-shrink: 0; font-size: 0.8rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-muted); }
.bk-tester input {
  flex: 1;
  min-width: 0;
  padding: 0.75rem 1.1rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font: inherit;
  font-size: 1rem;
}
.bk-tester input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 25%, transparent); }
.bk-fonts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(1rem, 2.2vw, 1.5rem); }
.bk-font { display: flex; flex-direction: column; gap: 0.7rem; padding: 1.5rem 1.5rem 1.3rem; }
.bk-font-top { display: flex; justify-content: space-between; align-items: flex-start; }
.bk-font-aa {
  font-family: var(--ff);
  font-weight: 700;
  font-size: clamp(3.6rem, 7vw, 5rem);
  line-height: 0.9;
  background: var(--bk-spectrum);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  transition: letter-spacing 0.5s var(--ease-out);
}
.bk-font:hover .bk-font-aa { letter-spacing: 0.06em; }
.bk-font-role { padding: 0.3rem 0.7rem; border-radius: 999px; border: 1px solid var(--border); font-size: 0.72rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); }
.bk-font-name { font-family: var(--ff); font-size: 1.5rem; font-weight: 700; }
.bk-font-sample {
  font-family: var(--ff);
  font-size: 1.35rem;
  line-height: 1.3;
  min-height: 3.5rem;
  color: var(--text);
  overflow-wrap: anywhere;
}
.bk-font-desc { font-size: 0.9rem; color: var(--text-muted); line-height: 1.55; }
.bk-font-foot { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 0.4rem 0.8rem; margin-top: auto; padding-top: 0.8rem; border-top: 1px solid var(--border); font-size: 0.82rem; }
.bk-font-weights { color: var(--text-muted); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 0.75rem; }
.bk-font-foot a { white-space: nowrap; display: inline-flex; align-items: center; gap: 0.3rem; color: var(--accent); font-weight: 600; text-decoration: none; }
.bk-font-foot a:hover { text-decoration: underline; }

/* ---------- Kurallar ---------- */
.bk-rules-top {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: clamp(1rem, 2.4vw, 1.6rem);
  margin-bottom: var(--space-5);
}
.bk-space {
  margin: 0;
  display: grid;
  place-items: center;
  padding: clamp(1.5rem, 4vw, 3rem);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px) 0 0 / 24px 24px,
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px) 0 0 / 24px 24px,
    var(--bk-night);
  border: 1px solid var(--border);
}
.bk-space-zone {
  position: relative;
  width: 100%;
  max-width: 560px;
  /* Logo 7153 x 2098 birim, cevresinde 1000 birim (x-yuksekligi) bosluk:
     toplam 9153 x 4098. Konumlar plan cizimiyle ayni oranlarda. */
  aspect-ratio: 9153 / 4098;
  border: 2px dashed rgba(167, 139, 250, 0.75);
  border-radius: 6px;
  background: rgba(124, 58, 237, 0.12);
}
.bk-space-zone img { position: absolute; left: 10.925%; top: 24.4%; width: 78.15%; height: auto; outline: 1px solid rgba(167, 139, 250, 0.5); }
.bk-space-x {
  position: absolute;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.8rem;
  color: #c4b5fd;
}
.bk-space-x--t { left: 50%; top: 0; height: 24.4%; transform: translateX(-50%); }
.bk-space-x--b { left: 50%; bottom: 0; height: 24.4%; transform: translateX(-50%); }
.bk-space-x--l { top: 50%; left: 0; width: 10.925%; transform: translateY(-50%); }
.bk-space-x--r { top: 50%; right: 0; width: 10.925%; transform: translateY(-50%); }
.bk-min { padding: 1.4rem 1.5rem; }
.bk-min h3 { font-family: var(--font-heading); font-size: 1.1rem; margin-bottom: 1rem; }
.bk-min ul { display: grid; gap: 1rem; }
.bk-min li { display: grid; grid-template-columns: 1fr auto; gap: 0.15rem 0.8rem; align-items: baseline; }
.bk-min-bar {
  grid-column: 1 / -1;
  order: 3;
  height: 6px;
  width: var(--w);
  border-radius: 6px;
  background: var(--bk-spectrum);
  transform-origin: left;
  animation: bkGrow 1.2s var(--ease-cine) both;
}
@keyframes bkGrow { from { transform: scaleX(0); } }
.bk-min strong { font-size: 0.92rem; }
.bk-min em { font-style: normal; font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 0.82rem; color: var(--text-muted); }

.bk-rules-sub {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin: var(--space-4) 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: 1.2rem;
}
.bk-rules-sub::before {
  content: '✓';
  display: grid;
  place-items: center;
  width: 1.8rem; height: 1.8rem;
  border-radius: 50%;
  font-size: 0.95rem;
  color: #05060F;
  background: var(--brand-green);
}
.bk-rules-sub--dont::before { content: '✕'; background: #ef4444; color: #fff; }
.bk-dos, .bk-donts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(0.8rem, 2vw, 1.2rem); }
.bk-rule { border-radius: var(--radius); border: 1px solid var(--border); background: var(--surface); overflow: hidden; }
.bk-rule.is-do { border-color: color-mix(in srgb, var(--brand-green) 45%, transparent); }
.bk-rule.is-dont { border-color: color-mix(in srgb, #ef4444 40%, transparent); }
.bk-rule p { padding: 0.8rem 1rem; font-size: 0.9rem; font-weight: 500; }
.bk-rule-art {
  position: relative;
  display: grid;
  place-items: center;
  height: 150px;
  padding: 1.2rem;
  overflow: hidden;
}
.bk-rule-art img { max-width: 74%; max-height: 72px; width: auto; height: auto; }
.bk-rule-art .bk-rule-mono { max-height: 86px; }
.bk-rule-art[data-bg="light"] { background: var(--bk-paper); }
.bk-rule-art[data-bg="dark"] { background: var(--bk-night); }
.bk-rule-art[data-bg="spectrum"] { background: var(--bk-spectrum); }
.bk-rule-art[data-bg="busy"] {
  background:
    radial-gradient(circle at 20% 30%, #f59e0b 0 14%, transparent 15%),
    radial-gradient(circle at 75% 70%, #e2e8f0 0 18%, transparent 19%),
    repeating-linear-gradient(45deg, #94a3b8 0 10px, #f8fafc 10px 20px),
    #cbd5e1;
}
.bk-dont--0 img { transform: scale(1.35, 0.72); }
.bk-dont--1 img { transform: rotate(-14deg); }
.bk-dont--2 img { filter: invert(36%) sepia(92%) saturate(2400%) hue-rotate(338deg) brightness(98%); }
.bk-dont--3 img { filter: drop-shadow(6px 8px 0 #F59E0B) drop-shadow(0 0 14px #7C3AED); }
.bk-dont--4 img { opacity: 0.9; }
.bk-fake-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: 'Times New Roman', Georgia, serif;
  font-style: italic;
  font-size: 2.6rem;
  color: #05060F;
}
.bk-fake-box { padding: 0 0.2rem; border: 2px solid #05060F; font-size: 1.9rem; }
.bk-rule-x {
  position: absolute;
  top: 0.6rem; right: 0.6rem;
  width: 1.6rem; height: 1.6rem;
  border-radius: 50%;
  background: #ef4444;
  box-shadow: 0 6px 16px rgba(239, 68, 68, 0.45);
}
.bk-rule-x::before,
.bk-rule-x::after {
  content: '';
  position: absolute;
  left: 50%; top: 50%;
  width: 0.8rem; height: 2px;
  background: #fff;
  transform: translate(-50%, -50%) rotate(45deg);
}
.bk-rule-x::after { transform: translate(-50%, -50%) rotate(-45deg); }

/* ---------- Basin ---------- */
.bk-press-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: clamp(1.5rem, 4vw, 3rem); align-items: start; }
.bk-press-main .section-title,
.bk-press-main .section-subtitle { text-align: left; }
.bk-boiler { position: relative; margin: var(--space-3) 0 0; padding: 2rem 1.8rem 1.4rem 2.4rem; }
.bk-boiler::before {
  content: '“';
  position: absolute;
  left: 0.6rem; top: -0.4rem;
  font-family: var(--font-display);
  font-size: 5rem;
  line-height: 1;
  background: var(--bk-spectrum);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.bk-boiler p { font-size: 1.05rem; line-height: 1.75; margin-bottom: 1rem; }
.bk-press-side { display: grid; gap: 1rem; }
.bk-contact { padding: 1.5rem; }
.bk-contact h3 { font-family: var(--font-heading); font-size: 1.15rem; margin-bottom: 0.4rem; }
.bk-contact p { color: var(--text-muted); font-size: 0.92rem; margin-bottom: 0.9rem; }
.bk-mail {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.3rem, 2.4vw, 1.7rem);
  text-decoration: none;
  background: var(--bk-spectrum);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.bk-mail:hover, .bk-mail:focus-visible { text-decoration: underline; text-decoration-color: var(--brand-purple); }
.bk-legal { font-size: 0.82rem; line-height: 1.6; color: var(--text-muted); }

/* ---------- Son cagri ---------- */
.bk-final { padding-top: 0; overflow: hidden; }
.bk-final-marquee { padding-block: var(--space-3); margin-bottom: var(--space-4); border-block: 1px solid var(--border); background: var(--bk-night); }
.bk-final-marquee .fx-marquee-track { gap: clamp(2.5rem, 6vw, 5rem); padding-inline: 2.5rem; }
.bk-final-marquee img { height: 44px; width: auto; flex-shrink: 0; opacity: 0.85; }
.bk-final-card {
  position: relative;
  max-width: 920px;
  margin: 0 auto;
  padding: clamp(2rem, 5vw, 3.5rem);
  text-align: center;
  border-radius: var(--radius-lg);
  background: linear-gradient(var(--bg-raised), var(--bg-raised)) padding-box, conic-gradient(from var(--bk-a, 0deg), #00D4FF, #7C3AED, #10B981, #00D4FF) border-box;
  border: 2px solid transparent;
  box-shadow: 0 30px 90px rgba(124, 58, 237, 0.25);
  animation: bkBorder 8s linear infinite;
}
@property --bk-a { syntax: '<angle>'; inherits: false; initial-value: 0deg; }
@keyframes bkBorder { to { --bk-a: 360deg; } }
.bk-final-card .section-intro { margin-bottom: var(--space-3); }
.bk-final-card .bk-hero-cta { justify-content: center; }

/* Kopyalandi bildirimi */
.bk-toast {
  position: fixed;
  left: 50%; bottom: 2rem;
  z-index: var(--z-overlay);
  padding: 0.7rem 1.2rem;
  border-radius: 999px;
  background: var(--bk-night);
  color: #fff;
  border: 1px solid rgba(0, 212, 255, 0.4);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.4);
  font-size: 0.9rem;
  font-weight: 600;
  transform: translate(-50%, 160%);
  opacity: 0;
  transition: transform 0.45s var(--ease-cine), opacity 0.3s;
  pointer-events: none;
}
.bk-toast.is-on { transform: translate(-50%, 0); opacity: 1; }
.bk-toast::before { content: ''; display: inline-block; width: 0.75rem; height: 0.75rem; margin-right: 0.5rem; border-radius: 50%; background: var(--sw-toast, var(--bk-spectrum)); vertical-align: -0.05em; box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.3); }

/* ---------- Acik tema ---------- */
[data-theme="light"] .bk-kit-btn small { border-left-color: rgba(255, 255, 255, 0.5); }
[data-theme="light"] .bk-stage-poster { filter: drop-shadow(0 18px 40px rgba(124, 58, 237, 0.22)); }
[data-theme="light"] .bk-code { color: #b9f3ff; }
/* --accent acik temada #0284c7: kucuk kalin yazida 3,5:1. Bir ton koyusu 5,9:1. */
[data-theme="light"] .bk-apply em,
[data-theme="light"] .bk-font-foot a { color: #0369a1; }

/* ---------- Duyarli ---------- */
@media (max-width: 1080px) {
  .bk-hero-grid { grid-template-columns: 1fr; }
  .bk-hero-title { max-width: 16ch; }
  .bk-stage { max-width: 440px; order: -1; margin-bottom: -1rem; }
  .bk-anatomy-grid,
  .bk-press-grid,
  .bk-rules-top,
  .bk-partner-foot,
  .bk-spectrum { grid-template-columns: 1fr; }
  .bk-gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bk-swatches { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bk-fonts { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .bk-gallery,
  .bk-gallery--partner,
  .bk-dos,
  .bk-donts { grid-template-columns: 1fr; }
  .bk-card--wide { grid-column: auto; }
  .bk-card-stage { min-height: 190px; }
  .bk-stage { max-width: 330px; }
  .bk-tester { flex-direction: column; align-items: stretch; border-radius: var(--radius); padding: 0.8rem; }
  .bk-snippet-head { flex-direction: column; }
  .bk-bp-text { font-size: 210px; }
  .bk-kind-tab { padding-right: 1rem; font-size: 0.9rem; }
}
@media (max-width: 420px) {
  .bk-swatches { grid-template-columns: 1fr 1fr; }
  .bk-swatch-chip { min-height: 140px; }
  .bk-swatch-name { font-size: 1.05rem; }
}

@media (prefers-reduced-motion: reduce) {
  .bk-stage-rings span,
  .bk-stage::before,
  .bk-spectrum-bar,
  .bk-final-card,
  .bk-eyebrow-dot::after,
  .bk-partner-aurora { animation: none; }
  .bk-poster-box,
  .bk-poster-letters { animation: none; stroke-dashoffset: 0; fill-opacity: 1; stroke-width: 0; }
  .bk-hero .bk-hero-cta,
  .bk-hero .bk-hero-stats { animation: none; }
  .bk-blueprint.show-parts .bk-bp-pin { animation: none; }
}