:root {
  --bb-night: #05060b;
  --bb-shadow: rgba(11, 4, 24, 0.4);
  --bb-panel: rgba(21, 23, 33, 0.82);
  --bb-panel-strong: rgba(30, 32, 44, 0.9);
  --bb-gradient: linear-gradient(135deg, #1f1142 0%, #091520 60%, #070a12 100%);
  --bb-lavender: #b388eb;
  --bb-azure: #72ddf7;
  --bb-white: #f9f9ff;
  --bb-radius-lg: 28px;
  --bb-radius-md: 20px;
  --bb-radius-sm: 14px;
  --bb-transition: 0.3s ease;
  font-family: 'Segoe UI', sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(circle at bottom, #1b1635 0%, #090b14 52%, #05060b 100%);
  color: var(--bb-white);
  line-height: 1.6;
  min-height: 100vh;
}

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

#assets-content {
  padding: 140px 5vw 120px;
  display: flex;
  flex-direction: column;
  gap: 4.5rem;
  max-width: 1440px;
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(280px, 1.1fr) minmax(260px, 0.9fr);
  gap: 3.5rem;
  padding: 3.5rem clamp(2rem, 4vw, 4rem);
  background: var(--bb-gradient);
  border-radius: var(--bb-radius-lg);
  position: relative;
  overflow: hidden;
  box-shadow: 0 35px 80px rgba(21, 12, 42, 0.4);
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 75% 15%, rgba(114, 221, 247, 0.18), transparent 45%),
              radial-gradient(circle at 20% 80%, rgba(179, 136, 235, 0.22), transparent 55%);
  pointer-events: none;
}

.hero-copy {
  position: relative;
  z-index: 2;
}

.eyebrow {
  font-size: 0.82rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.7);
  margin: 0 0 1.1rem;
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(2.4rem, 4vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: 0.02em;
}

.lead {
  margin: 0 0 2.2rem;
  font-size: 1.05rem;
  max-width: 520px;
  color: rgba(239, 244, 255, 0.82);
}

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

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 2.2rem;
  border-radius: 18px;
  font-weight: 700;
  font-size: 0.94rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--bb-white);
  background: linear-gradient(140deg, rgba(9, 12, 28, 0.95), rgba(7, 9, 20, 0.85));
  border: 1px solid rgba(114, 221, 247, 0.32);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), 0 18px 42px rgba(8, 10, 26, 0.45);
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease, background 0.35s ease, color 0.35s ease, letter-spacing 0.35s ease;
  overflow: hidden;
  isolation: isolate;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 15% -10%, rgba(114, 221, 247, 0.3), transparent 50%), radial-gradient(circle at 85% 120%, rgba(247, 174, 248, 0.25), transparent 55%);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.btn:hover {
  transform: translateY(-6px);
  border-color: rgba(128, 147, 241, 0.6);
  box-shadow: 0 26px 60px rgba(12, 14, 34, 0.55);
  letter-spacing: 0.16em;
}

.btn:hover::after {
  opacity: 1;
}

.btn:focus-visible {
  outline: 3px solid rgba(114, 221, 247, 0.65);
  outline-offset: 4px;
}

.btn.primary {
  background: linear-gradient(135deg, rgba(128, 147, 241, 0.22), rgba(179, 136, 235, 0.6));
  border: 1px solid transparent;
  color: #fff;
  box-shadow: 0 28px 58px rgba(122, 96, 255, 0.45);
}

.btn.primary::after {
  background: radial-gradient(circle at 25% 0%, rgba(255, 255, 255, 0.28), transparent 50%), radial-gradient(circle at 80% 120%, rgba(114, 221, 247, 0.4), transparent 55%);
}

.btn.primary:hover {
  background: linear-gradient(135deg, rgba(128, 147, 241, 0.4), rgba(247, 174, 248, 0.75));
  box-shadow: 0 34px 70px rgba(128, 110, 255, 0.6);
}

.btn.ghost {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.24);
  color: rgba(244, 248, 255, 0.85);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), 0 16px 40px rgba(7, 9, 18, 0.35);
}

.btn.ghost::after {
  background: radial-gradient(circle at 10% -10%, rgba(114, 221, 247, 0.18), transparent 45%), radial-gradient(circle at 85% 120%, rgba(179, 136, 235, 0.22), transparent 60%);
}

.btn.ghost:hover {
  background: rgba(114, 221, 247, 0.16);
  color: #fff;
  border-color: rgba(114, 221, 247, 0.5);
}

.btn.outline {
  background: transparent;
  color: rgba(244, 248, 255, 0.92);
  border-color: rgba(114, 221, 247, 0.45);
  box-shadow: 0 20px 44px rgba(8, 10, 24, 0.45);
}

.btn.outline::after {
  background: radial-gradient(circle at 50% 50%, rgba(114, 221, 247, 0.12), transparent 65%);
}

.btn.outline:hover {
  background: linear-gradient(135deg, rgba(114, 221, 247, 0.14), rgba(179, 136, 235, 0.2));
  border-color: rgba(179, 136, 235, 0.55);
}

.hero-media {
  position: relative;
  display: grid;
  align-content: center;
  justify-items: center;
}

.media-stacked-card {
  width: clamp(220px, 24vw, 320px);
  border-radius: var(--bb-radius-md);
  overflow: hidden;
  position: relative;
  box-shadow: 0 30px 60px rgba(8, 4, 20, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
}

.media-stacked-card img {
  width: 100%;
  display: block;
}

.media-logo {
  position: absolute;
  bottom: -2.5rem;
  right: -1.8rem;
  width: clamp(160px, 20vw, 220px);
  padding: 1.5rem;
  background: rgba(5, 6, 11, 0.85);
  border-radius: var(--bb-radius-md);
  display: flex;
  justify-content: center;
}

.media-logo img {
  width: clamp(120px, 16vw, 180px);
  filter: drop-shadow(0 12px 25px rgba(179, 136, 235, 0.5));
}

.brand-section {
  background: var(--bb-panel);
  border-radius: var(--bb-radius-lg);
  padding: clamp(2.5rem, 3vw, 3.5rem);
  box-shadow: 0 28px 70px rgba(10, 6, 24, 0.45);
  border: 1px solid rgba(128, 147, 241, 0.18);
}

.brand-section--compact {
  padding: clamp(2rem, 3vw, 2.8rem);
}

.section-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.section-header h2 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.9rem, 3vw, 2.4rem);
}

.section-lead {
  max-width: 520px;
  margin: 0;
  color: rgba(230, 235, 255, 0.72);
}

.section-actions {
  display: flex;
  align-items: flex-end;
  gap: 1rem;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.guideline-card {
  background: var(--bb-panel-strong);
  border-radius: var(--bb-radius-md);
  padding: 1.5rem;
  border: 1px solid rgba(179, 136, 235, 0.22);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
  position: relative;
  overflow: hidden;
}

.guideline-index {
  font-size: 0.8rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
  display: block;
  margin-bottom: 1rem;
}

.guideline-card h3 {
  margin: 0 0 0.6rem;
  font-size: 1.2rem;
}

.asset-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.8rem;
}

.asset-card {
  background: rgba(10, 12, 20, 0.75);
  border-radius: var(--bb-radius-md);
  border: 1px solid rgba(114, 221, 247, 0.18);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  position: relative;
  transition: transform var(--bb-transition), box-shadow var(--bb-transition);
  box-shadow: 0 20px 40px rgba(6, 10, 24, 0.35);
}

.asset-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 1px solid transparent;
  transition: border var(--bb-transition);
}

.asset-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 28px 60px rgba(12, 20, 42, 0.4);
}

.asset-card:hover::after {
  border-color: rgba(179, 136, 235, 0.45);
}

.asset-preview {
  padding: 1.5rem;
  border-radius: var(--bb-radius-sm);
  background: linear-gradient(145deg, rgba(179, 136, 235, 0.12), rgba(114, 221, 247, 0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 180px;
}

.asset-preview img {
  max-width: 100%;
  height: auto;
}

.dark-surface .asset-preview {
  background: linear-gradient(140deg, rgba(5, 6, 11, 0.92), rgba(15, 17, 28, 0.88));
}

.light-surface .asset-preview {
  background: linear-gradient(140deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.88));
}

.asset-card h3 {
  margin: 0 0 0.5rem;
}

.asset-card p {
  margin: 0;
  color: rgba(224, 230, 255, 0.7);
}

.asset-meta {
  margin: 0;
  display: grid;
  gap: 0.6rem;
}

.asset-meta div {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 1rem;
}

.asset-meta dt {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.26em;
  color: rgba(255, 255, 255, 0.45);
  margin: 0;
}

.asset-meta dd {
  margin: 0;
  color: rgba(234, 239, 255, 0.8);
}

.carousel {
  position: relative;
  width: 100%;
  min-height: clamp(320px, 50vh, 520px);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-radius: var(--bb-radius-md);
  background: radial-gradient(circle at center, rgba(179, 136, 235, 0.18), rgba(5, 6, 11, 0.92));
  border: 1px solid rgba(179, 136, 235, 0.18);
}

.carousel-track {
  position: relative;
  width: 100%;
  height: 100%;
}

.carousel-track img {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.72);
  opacity: 0;
  filter: blur(10px) grayscale(0.3);
  transition: transform 0.65s cubic-bezier(.4, 0, .2, 1), opacity 0.65s cubic-bezier(.4, 0, .2, 1), filter 0.65s cubic-bezier(.4, 0, .2, 1);
  max-width: min(78vw, 880px);
  max-height: 70vh;
  border-radius: 24px;
  box-shadow: 0 30px 80px rgba(8, 12, 28, 0.65);
  pointer-events: none;
}

.carousel-track img.active {
  opacity: 1;
  filter: none;
  transform: translate(-50%, -50%) scale(1);
  pointer-events: auto;
}

.carousel-track img.left,
.carousel-track img.right {
  opacity: 0.42;
  filter: blur(6px) grayscale(0.4);
}

.carousel-track img.left {
  transform: translate(-125%, -50%) scale(0.8) rotate(-3deg);
}

.carousel-track img.right {
  transform: translate(25%, -50%) scale(0.8) rotate(3deg);
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 60px;
  height: 60px;
  border-radius: 50%;
  border: none;
  font-size: 2rem;
  background: rgba(5, 6, 11, 0.6);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 20px 45px rgba(8, 10, 20, 0.45);
  transition: background var(--bb-transition), transform var(--bb-transition);
}

.carousel-btn:hover {
  background: rgba(114, 221, 247, 0.28);
}

.carousel-btn:active {
  transform: translateY(-50%) scale(0.92);
}

.carousel-btn.is-active {
  transform: translateY(-50%) scale(0.92);
}

.carousel-btn.prev {
  left: clamp(1rem, 4vw, 2.5rem);
}

.carousel-btn.next {
  right: clamp(1rem, 4vw, 2.5rem);
}

.carousel-hint {
  margin: 1.5rem auto 0;
  text-align: center;
  color: rgba(224, 230, 255, 0.6);
  font-size: 0.95rem;
  opacity: 0.65;
  transition: opacity var(--bb-transition);
}

.carousel-hint.is-visible {
  opacity: 1;
}

.palette-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.75rem;
}

.color-swatch {
  --swatch-color: #ffffff;
  position: relative;
  border-radius: var(--bb-radius-sm);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(7, 8, 16, 0.82);
  box-shadow: 0 18px 45px rgba(8, 12, 24, 0.35);
  transition: transform var(--bb-transition), box-shadow var(--bb-transition);
  display: flex;
  flex-direction: column;
  min-height: 220px;
}

.color-swatch:hover {
  transform: translateY(-6px);
  box-shadow: 0 30px 68px rgba(8, 12, 24, 0.55);
}

.color-chip {
  min-height: 140px;
  background: var(--swatch-color);
  position: relative;
}

.color-chip::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.35), rgba(255, 255, 255, 0) 45%),
              linear-gradient(20deg, rgba(0, 0, 0, 0.08), rgba(0, 0, 0, 0));
  opacity: 0.45;
  mix-blend-mode: soft-light;
  pointer-events: none;
}

.color-data {
  padding: 1.4rem 1.4rem 1.6rem;
  background: rgba(3, 5, 12, 0.82);
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.color-labels {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.color-token {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(244, 248, 255, 0.95);
}

.color-role {
  font-size: 0.92rem;
  color: rgba(214, 223, 255, 0.65);
}

.copy-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  align-self: flex-start;
  padding: 0.55rem 1.35rem;
  border-radius: 12px;
  border: 1px solid rgba(114, 221, 247, 0.3);
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  background: rgba(9, 11, 24, 0.82);
  color: rgba(244, 248, 255, 0.92);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease, background 0.3s ease, color 0.3s ease;
  overflow: hidden;
}

.copy-btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% -20%, rgba(114, 221, 247, 0.28), transparent 45%), radial-gradient(circle at 80% 120%, rgba(179, 136, 235, 0.28), transparent 55%);
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}

.copy-btn:hover {
  transform: translateY(-4px);
  border-color: rgba(179, 136, 235, 0.55);
  background: linear-gradient(135deg, rgba(114, 221, 247, 0.2), rgba(179, 136, 235, 0.35));
  color: #fff;
  box-shadow: 0 16px 32px rgba(9, 12, 28, 0.45);
}

.copy-btn:hover::after {
  opacity: 1;
}

.copy-btn:active {
  transform: translateY(-1px);
  box-shadow: 0 10px 22px rgba(9, 12, 28, 0.4);
}

.copy-btn:focus-visible {
  outline: 2px solid rgba(114, 221, 247, 0.7);
  outline-offset: 3px;
}

.color-swatch.copied::after {
  content: 'Copié !';
  position: absolute;
  top: 14px;
  right: 18px;
  background: rgba(5, 6, 11, 0.86);
  color: var(--bb-white);
  padding: 0.24rem 0.85rem;
  border-radius: 999px;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  animation: fadeCopied 1.3s both;
}

@keyframes fadeCopied {
  0% { opacity: 0; transform: translateY(-6px); }
  30% { opacity: 1; transform: translateY(0); }
  70% { opacity: 1; }
  100% { opacity: 0; transform: translateY(-6px); }
}

.color-swatch.main-color {
  border-color: rgba(255, 255, 255, 0.32);
  box-shadow: 0 30px 75px rgba(15, 20, 46, 0.55);
}

.color-swatch.main-color .color-chip::before {
  content: '★';
  position: absolute;
  top: 16px;
  right: 20px;
  font-size: 1.18rem;
  color: rgba(255, 255, 255, 0.85);
  text-shadow: 0 0 12px rgba(0, 0, 0, 0.4);
}

.cta-panel {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  background: linear-gradient(135deg, rgba(114, 221, 247, 0.18), rgba(179, 136, 235, 0.28));
  padding: clamp(1.8rem, 3vw, 2.6rem);
  border-radius: var(--bb-radius-md);
  border: 1px solid rgba(128, 147, 241, 0.35);
}

.cta-panel h2 {
  margin: 0 0 0.6rem;
  font-size: clamp(1.6rem, 3vw, 2rem);
}

.cta-panel p {
  margin: 0;
  max-width: 480px;
  color: rgba(14, 16, 28, 0.8);
}

.asset-overlay {
  position: fixed;
  inset: 0;
  background: rgba(5, 6, 11, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(1rem, 4vw, 2.5rem);
  z-index: 2000;
  cursor: zoom-out;
}

.asset-overlay__inner {
  max-width: min(95vw, 1080px);
  max-height: 90vh;
  background: rgba(8, 10, 18, 0.9);
  border-radius: var(--bb-radius-md);
  padding: clamp(1rem, 3vw, 1.6rem);
  border: 1px solid rgba(179, 136, 235, 0.38);
  box-shadow: 0 40px 90px rgba(5, 6, 12, 0.7);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  overflow: auto;
}

.asset-overlay__inner img {
  width: 100%;
  height: auto;
  border-radius: 18px;
  object-fit: contain;
}

.asset-overlay__inner p {
  margin: 0;
  text-align: center;
  color: rgba(224, 230, 255, 0.75);
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.site-footer {
  margin-top: 4rem;
  background: rgba(5, 6, 11, 0.7);
  border-top: 1px solid rgba(179, 136, 235, 0.26);
  backdrop-filter: blur(14px);
}

.site-footer .footer-content {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  justify-content: center;
  padding: 2.8rem clamp(1.5rem, 4vw, 4rem);
}

.site-footer h3 {
  margin: 0 0 1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.68);
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-nav a {
  color: rgba(240, 244, 255, 0.72);
  font-size: 0.95rem;
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 64px;
  height: 64px;
  border-radius: 18px;
  border: 1px solid rgba(114, 221, 247, 0.35);
  font-size: 1.8rem;
  background: rgba(7, 9, 18, 0.82);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 20px 40px rgba(8, 10, 20, 0.45);
  transition: transform 0.35s ease, box-shadow 0.35s ease, background 0.35s ease, border-color 0.35s ease;
  overflow: hidden;
}

.carousel-btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(114, 221, 247, 0.28), transparent 60%);
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}

.carousel-btn:hover {
  background: linear-gradient(135deg, rgba(114, 221, 247, 0.22), rgba(179, 136, 235, 0.32));
  border-color: rgba(179, 136, 235, 0.55);
  box-shadow: 0 26px 52px rgba(10, 12, 28, 0.6);
  transform: translateY(calc(-50% - 4px));
}

.carousel-btn:hover::after {
  opacity: 1;
}

.carousel-btn:active {
  transform: translateY(-50%) scale(0.94);
  box-shadow: 0 14px 30px rgba(10, 12, 28, 0.45);
}

.carousel-btn.is-active {
  transform: translateY(-50%) scale(0.96);
}

.carousel-btn:focus-visible {
  outline: 2px solid rgba(114, 221, 247, 0.6);
  outline-offset: 3px;
}

@media (max-width: 820px) {
  .site-header {
    height: 64px;
    padding: 0 6vw;
  }

  .site-header .nav {
    gap: 1.2rem;
    font-size: 0.92rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 620px) {
  #assets-content {
    padding-left: 1.2rem;
    padding-right: 1.2rem;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .asset-meta div {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }

  .carousel {
    min-height: 320px;
  }

  .carousel-btn {
    width: 48px;
    height: 48px;
    font-size: 1.4rem;
    border-radius: 14px;
  }

  .carousel-track img {
    max-width: 96vw;
  }

  .palette-grid {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  }
}