/* ─── Fonts ─────────────────────────────────────────── */
@font-face {
  font-family: 'Helmet Neue';
  src: url('fonts/HelmetNeue-Regular.woff2') format('woff2'),
       url('fonts/HelmetNeue-Regular.woff')  format('woff'),
       url('fonts/HelmetNeue-Regular.otf')   format('opentype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Neue Haas Unica';
  src: url('fonts/NeueHaasUnica.woff2') format('woff2'),
       url('fonts/NeueHaasUnica.woff')  format('woff');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

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

/* ─── Tokens ─────────────────────────────────────────── */
:root {
  --bg:            #F4F3EF;
  --text-primary:  #0C0C0C;
  --text-mid:      #666;
  --text-muted:    #C4C2BC;

  /* Gradient: dark left → near-white right */
  --g0:  #060608;
  --g1:  #090F28;
  --g2:  #0C28A0;
  --g3:  #1460D8;
  --g4:  #18A0EC;
  --g5:  #72CAFC;
  --g6:  #DCF2FF;

  --mode-speed: 0.7s;
  --mode-ease:  cubic-bezier(0.4, 0, 0.2, 1);
  --font:         'Neue Haas Unica', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Helmet Neue', 'General Sans', -apple-system, sans-serif;
}

/* ─── Base ─────────────────────────────────────────── */
html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font);
  background-color: var(--bg);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.5;
  transition:
    color var(--mode-speed) var(--mode-ease),
    background-color var(--mode-speed) var(--mode-ease);
}

/* ─── Gradient background ───────────────────────────── */
.gradient-bg {
  position: fixed;
  inset: 0;
  z-index: -2;
  background: linear-gradient(
    to right,
    var(--g0)  0%,
    var(--g1) 15%,
    var(--g2) 38%,
    var(--g3) 57%,
    var(--g4) 72%,
    var(--g5) 87%,
    var(--g6) 100%
  );
  clip-path: circle(0% at var(--i-x, 95%) var(--i-y, 50%));
  transition: clip-path 0.9s cubic-bezier(0.76, 0, 0.24, 1);
  will-change: clip-path;
}

/* Grain texture — layered for more depth */
.gradient-bg::before,
.gradient-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.gradient-bg::before {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: 0.55;
  mix-blend-mode: overlay;
}

.gradient-bg::after {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n2'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.4' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n2)'/%3E%3C/svg%3E");
  opacity: 0.3;
  mix-blend-mode: overlay;
}

/* ─── Gradient active ───────────────────────────────── */
body.gradient-active .gradient-bg {
  clip-path: circle(150% at var(--i-x, 95%) var(--i-y, 50%));
}

body.gradient-active {
  color: #fff;
  background-color: var(--g0);
}

/* ─── Header ────────────────────────────────────────── */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 2rem 2.5rem;
}

.wordmark {
  font-family: var(--font-display);
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  font-weight: 400;
  letter-spacing: -1px;
  text-transform: uppercase;
  color: #212121;
  text-decoration: none;
  transition: opacity 0.2s;
}

.wordmark:hover { opacity: 0.5; }

body.gradient-active .wordmark { color: #fff; }

nav {
  display: flex;
  gap: 2rem;
}

nav a {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  font-weight: 400;
  color: var(--text-mid);
  text-decoration: none;
  transition: color 0.2s;
}

nav a:hover { color: var(--text-primary); }

body.gradient-active nav a       { color: rgba(255,255,255,0.4); }
body.gradient-active nav a:hover { color: rgba(255,255,255,0.9); }

.sound-toggle {
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  color: var(--text-mid);
  display: flex;
  align-items: center;
  transition: color 0.2s, opacity 0.2s;
}

.sound-toggle:hover { color: var(--text-primary); }

body.gradient-active .sound-toggle       { color: rgba(255,255,255,0.4); }
body.gradient-active .sound-toggle:hover { color: rgba(255,255,255,0.9); }

/* Show on state by default, hide off state */
.sound-toggle .snd-off { display: none; }
.sound-toggle .snd-on  { display: contents; }

/* When muted, swap icons */
body.sounds-muted .sound-toggle .snd-on  { display: none; }
body.sounds-muted .sound-toggle .snd-off { display: contents; }
body.sounds-muted .sound-toggle          { opacity: 0.4; }

/* ─── Main ──────────────────────────────────────────── */
main {
  padding: 2rem 2.5rem 4rem;
  max-width: 68rem;
}

/* ─── Intro ─────────────────────────────────────────── */
.intro {
  margin-bottom: 0;
}

/* ─── Work section ──────────────────────────────────── */
.work {
  margin-top: clamp(6rem, 28vh, 18rem);
}

.intro p {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  font-weight: 400;
  line-height: 1.7;
  color: var(--text-mid);
  max-width: 38ch;
  font-kerning: normal;
  text-rendering: optimizeLegibility;
  font-feature-settings: "liga", "kern";
  transition: color var(--mode-speed) var(--mode-ease);
}

.intro p a {
  color: var(--text-primary);
  text-decoration: none;
  border-bottom: 1px solid rgba(0,0,0,0.15);
  transition: opacity 0.2s;
}

.intro p a:hover { opacity: 0.5; }

body.gradient-active .intro p            { color: rgba(255,255,255,0.5); }
body.gradient-active .intro p a          { color: rgba(255,255,255,0.85); border-bottom-color: rgba(255,255,255,0.2); }

/* ─── Project sections ──────────────────────────────── */
.project-section-heading {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--text-primary);
  margin: 0 0 0.6rem 0;
  transition: color var(--mode-speed) var(--mode-ease);
}

body.gradient-active .project-section-heading { color: rgba(255,255,255,0.9); }

.project-divider {
  height: 1px;
  background: rgba(0, 0, 0, 0.1);
  margin: 2rem 0;
  transition: background var(--mode-speed) var(--mode-ease);
}

body.gradient-active .project-divider { background: rgba(255,255,255,0.1); }

/* ─── Project list ──────────────────────────────────── */
.project-list {
  list-style: none;
}

.project-item {
  opacity: 0.45;
  transition: opacity 0.25s ease;
}

/* Dim all, brighten hovered */
.project-list:has(.project-item:hover) .project-item       { opacity: 0.15; }
.project-list:has(.project-item:hover) .project-item:hover { opacity: 1; }

/* Thumbnails: hidden on desktop, revealed as cards on mobile */
.project-thumb { display: none; }

/* Disable hover-dimming on touch devices */
@media (hover: none) {
  .project-item { opacity: 1; }
  .project-list:has(.project-item:hover) .project-item,
  .project-list:has(.project-item:hover) .project-item:hover { opacity: 1; }
}

.project-link {
  display: block;
  padding: 0.45rem 0;
  text-decoration: none;
  color: inherit;
}

.project-name {
  display: block;
  font-family: var(--font-display);
  font-size: 42px;
  font-weight: 400;
  font-style: normal;
  text-transform: uppercase;
  letter-spacing: -1px;
  line-height: 0.7;
  color: #212121;
}

.project-item:hover .project-name {
  font-weight: 600;
}

body.gradient-active .project-name { color: #fff; }
body.gradient-active .project-item:hover .project-name { color: #fff; }

/* ─── Footer ────────────────────────────────────────── */
footer {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding: 1.5rem 2.5rem 2rem;
  margin-top: 4rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  transition: color var(--mode-speed) var(--mode-ease);
}

body.gradient-active footer { color: rgba(255,255,255,0.28); }

.footer-left {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}


.footer-bio {
  color: var(--text-mid);
  transition: color var(--mode-speed) var(--mode-ease);
}

body.gradient-active .footer-bio { color: rgba(255,255,255,0.25); }

.footer-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.footer-links a {
  color: var(--text-mid);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-links a:hover                    { color: var(--text-primary); }
body.gradient-active .footer-links a:hover { color: rgba(255,255,255,0.9); }

/* ─── Floating i mark ───────────────────────────────── */
.i-wrap {
  position: fixed;
  right: 2.5rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 30;
}

.i-mark {
  display: block;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  animation: iDrift 18s linear infinite, iColour 10s ease-in-out infinite;
  transition: color var(--mode-speed) var(--mode-ease);
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.i-mark svg {
  display: block;
  width: 18px;  /* height auto-scales to ~52px given 245:716 ratio */
  height: auto;
}

/* Once gradient is active, sit dark against the near-white right edge */
body.gradient-active .i-mark       { color: var(--g2); }
body.gradient-active .i-mark:hover { color: var(--g1); }

/* Colour cycle: sweeps through the gradient palette */
@keyframes iColour {
  0%   { color: #060608; }  /* g0 — near black */
  25%  { color: #1460D8; }  /* g3 — blue */
  50%  { color: #DCF2FF; }  /* g6 — near white, almost invisible */
  75%  { color: #1460D8; }  /* g3 — blue */
  100% { color: #060608; }  /* g0 — near black */
}

/* Slow clockwise drift: full rotation + gentle float */
@keyframes iDrift {
  0%   { transform: rotate(0deg)   translateY(0px); }
  25%  { transform: rotate(90deg)  translateY(-10px); }
  50%  { transform: rotate(180deg) translateY(0px); }
  75%  { transform: rotate(270deg) translateY(10px); }
  100% { transform: rotate(360deg) translateY(0px); }
}

/* ─── Preview ───────────────────────────────────────── */
.preview {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 10;
  pointer-events: none;
  opacity: 0;
  scale: 0.96;
  transition:
    opacity 0.2s ease,
    scale 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.preview.is-visible {
  opacity: 1;
  scale: 1;
}

.preview-media {
  width: min(512px, 52vw);
  aspect-ratio: 1 / 1;
  border-radius: 5px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2), 0 4px 12px rgba(0,0,0,0.1);
}

.preview-media img,
.preview-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.preview-label {
  margin-top: 0.65rem;
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-align: center;
  transition: color var(--mode-speed) var(--mode-ease);
}

body.gradient-active .preview-label { color: rgba(255,255,255,0.35); }

/* ─── About page ────────────────────────────────────── */
.about-main {
  max-width: none;
  padding: 2rem 2.5rem 6rem;
}

.about-content {
  max-width: 640px;
  margin: 0 auto;
}

.about-title {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -1px;
  margin: 0 0 3.5rem;
}

body.gradient-active .about-title { color: rgba(255,255,255,0.9); }

.about-body {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.about-body p {
  font-size: clamp(0.95rem, 1.5vw, 1.05rem);
  line-height: 1.65;
  color: var(--text-mid);
  transition: color var(--mode-speed) var(--mode-ease);
}

body.gradient-active .about-body p { color: rgba(255,255,255,0.55); }

.about-list {
  margin: 0.5rem 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.about-list li {
  font-size: clamp(0.95rem, 1.5vw, 1.05rem);
  line-height: 1.65;
  color: var(--text-mid);
  padding-left: 1.1rem;
  position: relative;
  transition: color var(--mode-speed) var(--mode-ease);
}

.about-list li::before {
  content: '–';
  position: absolute;
  left: 0;
  color: var(--text-muted);
}

body.gradient-active .about-list li         { color: rgba(255,255,255,0.55); }
body.gradient-active .about-list li::before { color: rgba(255,255,255,0.25); }

.about-section {
  margin-top: 0.5rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(0,0,0,0.08);
  transition: border-color var(--mode-speed) var(--mode-ease);
}

body.gradient-active .about-section { border-top-color: rgba(255,255,255,0.1); }

.about-section-heading {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-primary);
  margin: 0 0 0.75rem;
  transition: color var(--mode-speed) var(--mode-ease);
}

body.gradient-active .about-section-heading { color: rgba(255,255,255,0.9); }

.about-body a {
  color: inherit;
  text-underline-offset: 0.2em;
}

.about-body a:hover { color: var(--text-primary); }

body.gradient-active .about-body a:hover { color: #fff; }

/* Active nav link */
nav a[aria-current="page"] { color: var(--text-primary); }
body.gradient-active nav a[aria-current="page"] { color: rgba(255,255,255,0.9); }

@media (max-width: 700px) {
  .about-main {
    padding: 2rem 1.25rem 4rem;
  }

  .about-title {
    margin-bottom: 2.5rem;
  }
}

/* ─── Case study navigation ─────────────────────────── */
.project-nav {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 2rem 2.5rem;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  transition: border-color var(--mode-speed) var(--mode-ease);
}

.project-nav-prev,
.project-nav-next {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  text-decoration: none;
  color: inherit;
  transition: opacity 0.2s;
}

.project-nav-next {
  text-align: right;
}

.project-nav-prev:not(.project-nav-inactive):hover,
.project-nav-next:not(.project-nav-inactive):hover {
  opacity: 0.45;
}

.project-nav-inactive {
  opacity: 0.25;
  cursor: default;
}

.project-nav-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-mid);
  transition: color var(--mode-speed) var(--mode-ease);
}

.project-nav-name {
  font-family: var(--font-display);
  font-size: clamp(1rem, 1.8vw, 1.4rem);
  font-weight: 400;
  letter-spacing: -1px;
  line-height: 1.15;
}

body.gradient-active .project-nav         { border-top-color: rgba(255,255,255,0.1); }
body.gradient-active .project-nav-label   { color: rgba(255,255,255,0.3); }

/* ─── Case study layout ──────────────────────────────── */
main.cs-main {
  max-width: none;
  padding: 2rem 2.5rem 0;
}

.cs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  align-items: start;
}

/* Images column */
.cs-images {
  display: flex;
  flex-direction: column;
}

.cs-img {
  width: 100%;
  display: block;
  background: rgba(0, 0, 0, 0.06);
}

.cs-video {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 */
  background: #000;
}

.cs-video iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: block;
  border: none;
}

/* Info column */
.cs-info-col {
  align-self: start;
}

.cs-info {
  padding: 2rem 2.5rem 4rem;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.cs-title {
  font-family: var(--font-display);
  font-size: 42px;
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -1px;
  text-transform: uppercase;
}


.cs-rule {
  height: 1px;
  background: rgba(0, 0, 0, 0.08);
  transition: background var(--mode-speed) var(--mode-ease);
}

.cs-meta {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.cs-meta-row {
  display: flex;
  gap: 1.5rem;
  align-items: baseline;
}

.cs-meta-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-primary);
  min-width: 3.5rem;
  transition: color var(--mode-speed) var(--mode-ease);
}

.cs-meta-value {
  font-size: 0.875rem;
  color: var(--text-mid);
  transition: color var(--mode-speed) var(--mode-ease);
}

.cs-desc {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.cs-desc p {
  font-size: clamp(0.875rem, 1.1vw, 1rem);
  line-height: 1.7;
  color: var(--text-mid);
  font-kerning: normal;
  text-rendering: optimizeLegibility;
  transition: color var(--mode-speed) var(--mode-ease);
}

.cs-section {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding-top: 0.5rem;
}

.cs-gif-row {
  display: flex;
  gap: 0.5rem;
}

.cs-gif-row img {
  flex: 1;
  min-width: 0;
  max-width: 200px;
  display: block;
  border-radius: 4px;
}

.cs-section-heading {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-primary);
  margin: 0;
  transition: color var(--mode-speed) var(--mode-ease);
}

body.gradient-active .cs-section-heading { color: rgba(255,255,255,0.9); }

/* Case study gradient-active overrides */
body.gradient-active .cs-rule             { background: rgba(255,255,255,0.1); }
body.gradient-active .cs-title           { color: rgba(255,255,255,0.9); }
body.gradient-active .cs-meta-label      { color: rgba(255,255,255,0.9); }
body.gradient-active .cs-meta-value      { color: rgba(255,255,255,0.5); }
.cs-desc ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.cs-desc ul li {
  font-size: clamp(0.875rem, 1.1vw, 1rem);
  line-height: 1.7;
  color: var(--text-mid);
  padding-left: 1.1rem;
  position: relative;
  transition: color var(--mode-speed) var(--mode-ease);
}

.cs-desc ul li::before {
  content: '–';
  position: absolute;
  left: 0;
  color: var(--text-muted);
}

body.gradient-active .cs-desc ul li         { color: rgba(255,255,255,0.5); }
body.gradient-active .cs-desc ul li::before { color: rgba(255,255,255,0.25); }

body.gradient-active .cs-desc p          { color: rgba(255,255,255,0.5); }
body.gradient-active .cs-img             { background: rgba(255,255,255,0.07); }

/* ─── Case study floating button & overlay ──────────────── */
.cs-about-btn {
  display: none;
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 40;
  background: var(--text-primary);
  color: var(--bg);
  border: none;
  border-radius: 100px;
  padding: 0.75rem 1.5rem;
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  cursor: pointer;
  white-space: nowrap;
  box-shadow: 0 4px 24px rgba(0,0,0,0.18);
  transition: opacity 0.2s;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.cs-about-btn:hover { opacity: 0.8; }

.cs-btn-icon {
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  flex-shrink: 0;
}

.cs-about-btn.is-active {
  z-index: 55;
}

.cs-about-btn.is-active .cs-btn-icon {
  transform: rotate(45deg);
}

body.gradient-active .cs-about-btn {
  background: rgba(255,255,255,0.9);
  color: #000;
}

/* ─── Responsive ─────────────────────────────────────── */
@media (max-width: 700px) {
  header, main, footer {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
  }

  /* i-mark: JS calculates top to sit in gap between intro and work */
  .i-wrap {
    right: 0.75rem;
    top: auto;
    bottom: auto;
    transform: none;
  }

  footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
  }

  /* Hide hover-only features */
  .preview { display: none; }

  /* Project list: full opacity, card layout */
  .project-item {
    opacity: 1;
  }

  .project-list:has(.project-item:hover) .project-item,
  .project-list:has(.project-item:hover) .project-item:hover {
    opacity: 1;
  }

  .project-list {
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
  }

  .project-link {
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
  }

  .project-thumb {
    display: block;
    width: 100%;
    overflow: hidden;
    border-radius: 8px;
  }

  .project-thumb img {
    width: 100%;
    display: block;
  }

  .project-name {
    font-size: clamp(1.3rem, 5.5vw, 1.6rem);
    letter-spacing: -0.5px;
  }

  .project-section-heading {
    margin-bottom: 1rem;
  }

  .footer-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .footer-links a {
    font-size: clamp(1rem, 1.8vw, 1.2rem);
    font-weight: 600;
    letter-spacing: 0.01em;
  }

  .footer-left {
    order: 1;
  }

  .footer-bio {
    font-size: clamp(1rem, 1.8vw, 1.2rem);
    font-weight: 600;
    letter-spacing: 0.01em;
  }

}

/* ─── Case study mobile overlay ──────────────────────────── */
@media (max-width: 768px) {
  .project-nav {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  main.cs-main {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
  }

  .cs-grid {
    grid-template-columns: 1fr;
  }

  .cs-about-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }

  .cs-info-col {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 50;
    background: var(--bg);
    overflow-y: scroll;
    overscroll-behavior-y: contain;
    transform: translateY(100%);
    transition: transform 0.45s cubic-bezier(0.32, 0.72, 0, 1);
  }

  .cs-info-col.is-open {
    transform: none;
  }

  .cs-info {
    padding: 5rem 1.5rem 6rem;
  }

  .cs-desc p,
  .cs-desc ul li,
  .cs-subtitle {
    font-size: 1.05rem;
    line-height: 1.65;
  }

  .cs-section-heading {
    font-size: 0.75rem;
  }

  .cs-meta-value {
    font-size: 0.95rem;
  }

  body.gradient-active .cs-info-col {
    background: var(--g0);
  }
}

/* ─── Visual Archive shuffle button ─────────────────────────── */
.va-shuffle-btn {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 40;
  background: var(--text-primary);
  color: var(--bg);
  border: none;
  border-radius: 100px;
  padding: 0.75rem 1.5rem;
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  cursor: pointer;
  white-space: nowrap;
  box-shadow: 0 4px 24px rgba(0,0,0,0.18);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: opacity 0.2s;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.va-shuffle-btn:hover { opacity: 0.8; }

body.gradient-active .va-shuffle-btn {
  background: rgba(255,255,255,0.9);
  color: #000;
}

/* ─── Visual Archive ─────────────────────────────────────── */
main.va-main {
  max-width: none;
  padding: 0;
}

.va-grid {
  columns: 4;
  column-gap: 6px;
  padding: 6px;
}

.va-item {
  display: block;
  width: 100%;
  margin-bottom: 6px;
  break-inside: avoid;
}

.va-video {
  position: relative;
  width: 100%;
  padding-bottom: 177.78%; /* 9:16 */
  overflow: hidden;
}

.va-video-square {
  padding-bottom: 100%; /* 1:1 */
}

.va-video iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

@media (max-width: 1100px) {
  .va-grid { columns: 3; }
}

@media (max-width: 680px) {
  .va-grid { columns: 1; column-gap: 4px; padding: 4px; }
  .va-item { margin-bottom: 4px; }
}

/* ─── Drum kit overlay ──────────────────────────────────────── */
.drum-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.drum-overlay.is-open {
  opacity: 1;
  pointer-events: all;
}

.drum-panel {
  width: 100%;
  max-width: 740px;
  background: #111;
  border-radius: 14px 14px 0 0;
  padding: 0.75rem 1.5rem 2.5rem;
  transform: translateY(100%);
  transition: transform 0.4s cubic-bezier(0.32, 0.72, 0, 1);
}

.drum-overlay.is-open .drum-panel {
  transform: translateY(0);
}

.drum-handle {
  width: 36px;
  height: 4px;
  background: rgba(255,255,255,0.15);
  border-radius: 2px;
  margin: 0 auto 1.25rem;
}

.drum-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.drum-panel-title {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
}

.drum-close {
  background: none;
  border: none;
  padding: 0.25rem;
  cursor: pointer;
  color: rgba(255,255,255,0.3);
  display: flex;
  align-items: center;
  transition: color 0.15s;
  line-height: 1;
}

.drum-close:hover { color: rgba(255,255,255,0.8); }

.drum-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
}

.drum-pad {
  position: relative;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.09);
  border-radius: 8px;
  padding: 0.9rem 0.85rem 0.75rem;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.6rem;
  color: #fff;
  text-align: left;
  transition: background 0.08s, border-color 0.08s, transform 0.08s;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  touch-action: manipulation;
}

.drum-pad-icon {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  color: rgba(255,255,255,0.18);
  pointer-events: none;
  transition: color 0.08s;
}

.drum-pad:hover .drum-pad-icon  { color: rgba(255,255,255,0.3); }
.drum-pad.is-active .drum-pad-icon { color: rgba(255,255,255,0.5); }

.drum-pad:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.18);
}

.drum-pad.is-active {
  background: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.35);
  transform: scale(0.95);
}

.drum-pad-name {
  font-size: 0.72rem;
  font-weight: 500;
  color: rgba(255,255,255,0.65);
  line-height: 1.2;
}

.drum-pad-key {
  font-size: 0.65rem;
  font-weight: 600;
  color: rgba(255,255,255,0.2);
  font-family: ui-monospace, monospace;
  letter-spacing: 0.04em;
}

.drum-kit-link {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.drum-kit-link:hover { color: var(--text-primary); }

body.gradient-active .drum-kit-link { color: rgba(255,255,255,0.3); }
body.gradient-active .drum-kit-link:hover { color: rgba(255,255,255,0.7); }

@media (max-width: 600px) {
  .drum-panel {
    padding: 0.75rem 1rem 2.5rem;
    border-radius: 12px 12px 0 0;
  }

  .drum-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.4rem;
  }

  .drum-pad {
    padding: 0.75rem 0.65rem 0.6rem;
  }
}