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

:root {
  --bg: #050508;
  --ink: #e8e4da;
  --ink-dim: #8a877e;
  --serif: "Cormorant Garamond", Georgia, serif;
  --sans: "Inter", -apple-system, system-ui, sans-serif;
}

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  overflow: hidden;
  overscroll-behavior: none;
}

/* keep the stage at the *visible* viewport height so mobile browsers
   don't stretch it behind their collapsing address bars */
@supports (height: 100dvh) {
  html, body { height: 100dvh; }
}

body { -webkit-font-smoothing: antialiased; }

/* ============ home intro ============ */
.intro {
  position: fixed;
  inset: 0;
  z-index: 20;
  pointer-events: none;
  background: transparent;
  overflow: hidden;
}

.intro::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--bg);
  animation: intro-veil 3.15s cubic-bezier(0.65, 0, 0.25, 1) forwards;
}

@keyframes intro-veil {
  0%, 34% { opacity: 1; }
  100% { opacity: 0; }
}

@keyframes intro-title-in {
  0% { opacity: 0; transform: scale(0.96); filter: blur(14px); }
  100% { opacity: 1; transform: scale(1); filter: blur(0); }
}

body.intro-running .viewport {
  opacity: 0;
  filter: blur(14px);
}

body.intro-running.intro-revealing .viewport {
  opacity: 1;
  filter: none;
}

body.intro-running .center-title {
  z-index: 21;
  opacity: 1;
  filter: none;
}

body.intro-running .center-title h1 {
  animation: intro-title-in 1.1s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

body.intro-running .center-title .subtitle,
body.intro-running .center-title nav,
body.intro-running .hint,
body.intro-running .sound-toggle {
  opacity: 0;
  filter: blur(8px);
}

body.intro-running .center-title .subtitle,
body.intro-running .center-title nav {
  transform: translate(-50%, 0.35rem);
}

body.intro-running .card,
body.intro-running .about-link,
body.intro-running .sound-toggle {
  pointer-events: none;
}

body.about-modal-open .card,
body.about-modal-open .about-link,
body.about-modal-open .sound-toggle {
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
  .intro {
    display: none;
  }

  .intro::before,
  body.intro-running .center-title h1 {
    animation: none;
  }
}

/* ============ 3D universe ============ */
.viewport {
  position: fixed;
  inset: 0;
  perspective: 1000px;
  perspective-origin: 50% 50%;
  z-index: 1;
  pointer-events: none; /* transparent parents must not swallow card clicks */
  opacity: 1;
  filter: none;
  transition: opacity 1.05s cubic-bezier(0.2, 0.8, 0.2, 1), filter 1.05s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.world {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
  will-change: transform;
  pointer-events: none;
}

.card {
  position: absolute;
  top: 50%;
  left: 50%;
  transform-style: preserve-3d;
  will-change: transform, opacity;
  border: 0;
  padding: 0;
  background: none;
  cursor: zoom-in;
  pointer-events: auto;
}

.card-inner {
  display: block;
  position: relative;
  animation: drift var(--drift-dur, 14s) ease-in-out var(--drift-delay, 0s) infinite alternate;
  backface-visibility: hidden;
}

.card img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 2px;
  filter: saturate(0.98) contrast(1.08) brightness(0.94);
  box-shadow: 0 0 26px rgba(0, 0, 0, 0.82);
  outline: 1px solid rgba(232, 228, 218, 0.12);
  pointer-events: none;
  transition: filter 0.25s, outline-color 0.25s, box-shadow 0.25s;
}

.card-inner::before {
  content: "";
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  width: 1.15rem;
  height: 1.15rem;
  border-top: 1px solid rgba(232, 228, 218, 0.56);
  border-right: 1px solid rgba(232, 228, 218, 0.56);
  opacity: 0.32;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s, border-color 0.25s;
}

.card-inner::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 2px;
  pointer-events: none;
  background:
    linear-gradient(rgba(5, 5, 8, 0.04), rgba(5, 5, 8, 0.04)),
    radial-gradient(circle at 50% 50%, rgba(232, 228, 218, 0.02), rgba(5, 5, 8, 0.14) 78%);
  box-shadow: inset 0 0 18px rgba(0, 0, 0, 0.28);
}

.card:hover img,
.card:focus-visible img {
  filter: saturate(1.04) contrast(1.1) brightness(1.02);
  outline-color: rgba(232, 228, 218, 0.42);
  box-shadow: 0 0 34px rgba(0, 0, 0, 0.88);
}

.card:hover .card-inner::before,
.card:focus-visible .card-inner::before {
  border-color: rgba(232, 228, 218, 0.95);
  opacity: 0.95;
  transform: translate(2px, -2px);
}

.card:focus-visible .card-inner img {
  outline: 2px solid var(--ink);
}

@keyframes drift {
  from { transform: translate3d(0, 0, 0) rotate(var(--tilt-a, -0.6deg)); }
  to   { transform: translate3d(var(--drift-x, 8px), var(--drift-y, -10px), 0) rotate(var(--tilt-b, 0.6deg)); }
}

@media (prefers-reduced-motion: reduce) {
  .card-inner { animation: none; }
}

/* ============ centre title ============ */
.center-title {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: max-content;
  max-width: 92vw;
  text-align: center;
  z-index: 2;
  pointer-events: none;
  mix-blend-mode: difference;
  opacity: 1;
  filter: none;
  transition: opacity 1s cubic-bezier(0.2, 0.8, 0.2, 1), filter 1s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.center-title h1 {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(2.2rem, 6vw, 4.6rem);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  white-space: nowrap;
}

.subtitle {
  margin-top: 0.4rem;
  font-size: clamp(0.65rem, 1.4vw, 0.8rem);
  letter-spacing: 0.55em;
  text-indent: 0.55em; /* optically centre the tracked-out text */
  text-transform: uppercase;
  color: var(--ink-dim);
}

.center-title .subtitle,
.center-title nav {
  position: absolute;
  left: 50%;
  width: max-content;
  max-width: 92vw;
  transform: translateX(-50%);
  transition:
    opacity 0.85s cubic-bezier(0.2, 0.8, 0.2, 1),
    filter 0.85s cubic-bezier(0.2, 0.8, 0.2, 1),
    transform 0.85s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.center-title .subtitle {
  top: calc(100% + 0.4rem);
  margin-top: 0;
}

.center-title nav {
  top: calc(100% + 2.6rem);
}

.about-link {
  pointer-events: auto;
  display: inline-block;
  margin-top: 0;
  font-size: 0.72rem;
  letter-spacing: 0.35em;
  text-indent: 0.35em;
  text-transform: uppercase;
  color: var(--ink-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color 0.3s, border-color 0.3s;
}

.about-link:hover, .about-link:focus-visible {
  color: var(--ink);
  border-color: var(--ink-dim);
}

/* ============ hint + depth bar ============ */
.hint {
  position: fixed;
  bottom: max(1.6rem, env(safe-area-inset-bottom));
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.62rem;
  letter-spacing: 0.4em;
  text-indent: 0.4em;
  text-transform: uppercase;
  color: var(--ink-dim);
  z-index: 2;
  animation: pulse 3s ease-in-out infinite;
  transition: opacity 1s, filter 1s;
}

.hint.hidden { opacity: 0; }

@keyframes pulse {
  0%, 100% { opacity: 0.35; }
  50% { opacity: 0.9; }
}

.sound-toggle {
  position: fixed;
  top: max(1.4rem, env(safe-area-inset-top));
  right: max(1.4rem, env(safe-area-inset-right));
  z-index: 3;
  background: none;
  border: 0;
  padding: 0.4rem 0;
  cursor: pointer;
  font-family: var(--sans);
  font-size: 0.62rem;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--ink-dim);
  border-bottom: 1px solid transparent;
  opacity: 1;
  filter: none;
  transition: color 0.3s, border-color 0.3s, opacity 1s, filter 1s;
}

.sound-toggle:hover, .sound-toggle:focus-visible { color: var(--ink); }

.sound-toggle[aria-pressed="true"] {
  color: var(--ink);
  border-color: var(--ink-dim);
}

/* ============ lightbox ============ */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(3, 3, 6, 0.94);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  transition: opacity 0.35s;
}

.lightbox.open { opacity: 1; }

.lightbox[hidden] { display: none; }

.lightbox img {
  max-width: min(92vw, 1600px);
  max-height: 86vh;
  width: auto;
  height: auto;
  box-shadow: 0 0 80px rgba(0, 0, 0, 0.9);
  border-radius: 2px;
}

.lb-close, .lb-nav {
  position: absolute;
  background: none;
  border: 0;
  color: var(--ink-dim);
  cursor: pointer;
  font-family: var(--serif);
  transition: color 0.25s;
  z-index: 11;
  padding: 0.5rem 1rem;
  outline: none;
  -webkit-tap-highlight-color: transparent;
}

.lb-close:hover, .lb-nav:hover,
.lb-close:focus-visible, .lb-nav:focus-visible {
  color: var(--ink);
  text-shadow: 0 0 18px rgba(232, 228, 218, 0.32);
}

.lb-close {
  top: max(0.8rem, env(safe-area-inset-top));
  right: max(0.8rem, env(safe-area-inset-right));
  font-size: 2.2rem;
  line-height: 1;
}

.lb-nav {
  top: 50%;
  transform: translateY(-50%);
  font-size: 3rem;
  line-height: 1;
}

.lb-prev { left: max(0.4rem, env(safe-area-inset-left)); }
.lb-next { right: max(0.4rem, env(safe-area-inset-right)); }

@media (max-width: 640px) {
  .lb-nav { display: none; } /* swipe or scroll instead */
  /* the close control lives in the footer on touch screens — easy thumb reach */
  .lb-close {
    top: auto;
    right: auto;
    bottom: max(1.1rem, env(safe-area-inset-bottom));
    left: 50%;
    transform: translateX(-50%);
    font-size: 2.6rem;
    padding: 0.4rem 1.4rem;
  }
  .lightbox img { max-height: 78vh; }
}

/* ============ about modal ============ */
.about-modal {
  position: fixed;
  inset: 0;
  z-index: 12;
  display: grid;
  place-items: center;
  padding: max(1rem, env(safe-area-inset-top)) max(1rem, env(safe-area-inset-right)) max(1rem, env(safe-area-inset-bottom)) max(1rem, env(safe-area-inset-left));
  background:
    radial-gradient(circle at 50% 34%, rgba(232, 228, 218, 0.08), transparent 34rem),
    rgba(3, 3, 6, 0.72);
  backdrop-filter: blur(9px);
  -webkit-backdrop-filter: blur(9px);
  opacity: 0;
  transition: opacity 0.36s ease;
}

.about-modal.open { opacity: 1; }

.about-modal[hidden] { display: none; }

.about-panel {
  position: relative;
  width: min(680px, 100%);
  max-height: min(78vh, 720px);
  overflow: auto;
  padding: clamp(1.45rem, 4vw, 2.5rem);
  border: 1px solid rgba(232, 228, 218, 0.2);
  background:
    linear-gradient(145deg, rgba(15, 15, 20, 0.96), rgba(6, 6, 10, 0.92)),
    rgba(5, 5, 8, 0.96);
  box-shadow:
    0 1.2rem 4rem rgba(0, 0, 0, 0.68),
    inset 0 0 0 1px rgba(255, 255, 255, 0.025);
  outline: none;
  transform: translateY(0.7rem) scale(0.985);
  transition: transform 0.42s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.about-modal.open .about-panel {
  transform: translateY(0) scale(1);
}

.about-close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  z-index: 1;
  border: 0;
  background: transparent;
  color: var(--ink-dim);
  cursor: pointer;
  font-family: var(--serif);
  font-size: 2.1rem;
  line-height: 1;
  padding: 0.35rem 0.65rem;
  outline: none;
  -webkit-tap-highlight-color: transparent;
  transition: color 0.25s, text-shadow 0.25s;
}

.about-close:hover,
.about-close:focus-visible {
  color: var(--ink);
  text-shadow: 0 0 18px rgba(232, 228, 218, 0.32);
}

.modal-eyebrow {
  margin-bottom: 0.45rem;
  color: var(--ink-dim);
  font-size: 0.66rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
}

.about-panel h2 {
  margin-bottom: clamp(1.35rem, 4vw, 2.3rem);
  font-family: var(--serif);
  font-size: clamp(2.1rem, 7vw, 4.5rem);
  font-weight: 300;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.about-panel .body-text {
  font-family: var(--serif);
  font-size: clamp(1.06rem, 2.2vw, 1.32rem);
  line-height: 1.68;
  color: var(--ink);
}

.about-panel .body-text + .body-text {
  margin-top: 1.25em;
}

/* ============ about page ============ */
.about-page {
  overflow: auto;
  overscroll-behavior: auto;
}

.about-page.about-waiting .body-text,
.about-page.about-waiting .back-link {
  opacity: 0;
}

.about-wrap {
  position: relative;
  z-index: 1;
  max-width: 620px;
  margin: 0 auto;
  padding:
    calc(14vh + env(safe-area-inset-top))
    max(1.5rem, env(safe-area-inset-right))
    16vh
    max(1.5rem, env(safe-area-inset-left));
}

.about-wrap h1 {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(1.9rem, 5vw, 3rem);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.about-wrap .subtitle { margin-bottom: 3.2rem; }

.about-wrap p.body-text {
  font-family: var(--serif);
  font-size: clamp(1.15rem, 2.4vw, 1.35rem);
  font-weight: 400;
  line-height: 1.75;
  color: var(--ink);
  margin-bottom: 1.6em;
}

.body-text.typing::after {
  content: "";
  display: inline-block;
  width: 1px;
  height: 0.92em;
  margin-left: 0.12em;
  background: var(--ink);
  vertical-align: -0.08em;
  animation: caret-blink 0.75s steps(1, end) infinite;
}

@keyframes caret-blink {
  0%, 45% { opacity: 1; }
  46%, 100% { opacity: 0; }
}

.about-page.typing-active .back-link {
  opacity: 0;
  transform: translateY(0.5rem);
}

.about-page.typing-complete .back-link {
  animation: about-link-in 0.7s ease forwards;
}

@keyframes about-link-in {
  from { opacity: 0; transform: translateY(0.5rem); }
  to { opacity: 1; transform: translateY(0); }
}

.back-link {
  display: inline-block;
  margin-top: 2.5rem;
  font-size: 0.72rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--ink-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color 0.3s, border-color 0.3s, opacity 0.35s, transform 0.35s;
}

.back-link:hover, .back-link:focus-visible {
  color: var(--ink);
  border-color: var(--ink-dim);
}

@media (max-width: 640px) {
  .about-wrap {
    padding:
      calc(6vh + env(safe-area-inset-top))
      max(1.2rem, env(safe-area-inset-right))
      10vh
      max(1.2rem, env(safe-area-inset-left));
  }

  .about-wrap h1 {
    font-size: clamp(1.7rem, 9vw, 2.35rem);
    margin-bottom: 0.25rem;
  }

  .about-wrap .subtitle {
    margin-bottom: 1.55rem;
    font-size: 0.6rem;
    letter-spacing: 0.42em;
    text-indent: 0.42em;
  }

  .about-wrap p.body-text {
    font-size: clamp(1rem, 4.8vw, 1.12rem);
    line-height: 1.55;
    margin-bottom: 1.05em;
  }

  .about-modal {
    align-items: end;
    padding: 0 max(0.7rem, env(safe-area-inset-right)) max(0.7rem, env(safe-area-inset-bottom)) max(0.7rem, env(safe-area-inset-left));
  }

  .about-panel {
    width: 100%;
    max-height: 82vh;
    padding: 1.45rem 1.25rem 1.65rem;
    transform: translateY(1.1rem);
  }

  .about-panel h2 {
    font-size: clamp(2rem, 15vw, 3.6rem);
    margin-bottom: 1.2rem;
  }

  .about-panel .body-text {
    font-size: clamp(1rem, 4.9vw, 1.12rem);
    line-height: 1.55;
  }

  .back-link {
    margin-top: 1.15rem;
    font-size: 0.64rem;
    letter-spacing: 0.28em;
  }
}

/* ============ noscript fallback ============ */
.noscript-grid {
  position: relative;
  z-index: 3;
  padding: 20vh 2rem;
  text-align: center;
  color: var(--ink-dim);
}