@import url("https://api.fontshare.com/v2/css?f[]=sentient@300,300i,400,400i&f[]=plus-jakarta-sans@400,500,600,700&display=swap");

:root {
  color-scheme: dark;
  --stage-pad: clamp(24px, 3.2vw, 56px);
  --content-max: 1500px;
  --control-width: clamp(360px, 24vw, 420px);
  --content-gap: clamp(72px, 6vw, 112px);
  --page-inline-pad: max(var(--stage-pad), calc((100vw - var(--content-max)) / 2));
  --visual-width: min(
    960px,
    calc((100svh - var(--stage-pad) * 2) * 4 / 3),
    calc(100vw - var(--page-inline-pad) * 2 - var(--control-width) - var(--content-gap))
  );
  --panel-border: rgba(255, 255, 255, 0.16);
  --panel-surface: rgba(10, 10, 11, 0.82);
  --accent: #fff;
  --muted: rgba(255, 255, 255, 0.58);
  --soft: rgba(255, 255, 255, 0.76);
  --tab-surface: #171719;
  --tab-active: #030304;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: #030303;
  font-family:
    "Plus Jakarta Sans", Inter, ui-sans-serif, system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.ambient-background {
  position: fixed;
  inset: 0;
  z-index: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  background: #030303;
  opacity: 0.92;
  transform: translateZ(0);
}

button {
  font: inherit;
}

.stage {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: var(--control-width) var(--visual-width);
  gap: var(--content-gap);
  align-items: center;
  justify-content: center;
  width: 100vw;
  height: 100vh;
  min-height: 100svh;
  overflow: hidden;
  padding: var(--stage-pad) var(--page-inline-pad);
  background: transparent;
}

.stage::before {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  content: "";
  background: linear-gradient(
    90deg,
    rgba(0, 0, 0, 0.08) 0%,
    rgba(0, 0, 0, 0.16) 48%,
    rgba(0, 0, 0, 0.04) 100%
  );
}

.interface-panel,
.visual-panel {
  position: relative;
  z-index: 2;
}

.visual-panel {
  isolation: isolate;
  min-width: 0;
  min-height: 0;
  justify-self: start;
  width: 100%;
  aspect-ratio: 4 / 3;
  outline: none;
  overflow: visible;
}

.interface-panel {
  container-type: inline-size;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: var(--control-width);
}

.site-header {
  width: 100%;
  margin: 0 0 clamp(22px, 3vh, 36px);
  text-align: center;
}

.site-title {
  z-index: 5;
  margin: 0;
  color: #fff;
  font-size: clamp(50px, 15cqw, 72px);
  line-height: 0.84;
  letter-spacing: 0;
  pointer-events: none;
  white-space: nowrap;
  max-width: 100%;
  overflow: visible;
}

.title-kinetic,
.title-atlas {
  display: inline;
}

.title-kinetic {
  font-family:
    "Plus Jakarta Sans", Inter, ui-sans-serif, system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-weight: 700;
}

.title-atlas {
  font-family: "Sentient", Georgia, serif;
  font-style: italic;
  font-weight: 300;
}

.site-subtitle {
  max-width: 34em;
  margin: clamp(12px, 1.8vh, 18px) auto 0;
  color: var(--soft);
  font-family:
    "Plus Jakarta Sans", Inter, ui-sans-serif, system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: clamp(13px, 1.15vw, 16px);
  font-weight: 400;
  line-height: 1.65;
  letter-spacing: 0;
}

.control-tabs {
  --active-tab-offset: 0%;
  --tab-inset: 5px;
  z-index: 5;
  position: relative;
  display: inline-grid;
  flex: 0 0 auto;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  width: 100%;
  min-width: 280px;
  padding: 5px;
  font-family:
    "Plus Jakarta Sans", Inter, ui-sans-serif, system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), transparent),
    var(--tab-surface);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 16px 44px rgba(0, 0, 0, 0.36);
}

.control-tabs::before {
  position: absolute;
  top: var(--tab-inset);
  bottom: var(--tab-inset);
  left: var(--tab-inset);
  width: calc((100% - var(--tab-inset) - var(--tab-inset)) / 4);
  content: "";
  pointer-events: none;
  background: var(--tab-active);
  border-radius: 999px;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.1),
    0 8px 18px rgba(0, 0, 0, 0.36);
  transform: translate3d(var(--active-tab-offset), 0, 0);
  transition: transform 320ms cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
}

.control-tab {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  min-width: 0;
  height: 36px;
  padding: 0 clamp(4px, 0.6vw, 10px);
  color: rgba(255, 255, 255, 0.62);
  cursor: pointer;
  background: transparent;
  border: 0;
  border-radius: 999px;
  font-size: clamp(9.5px, 0.8vw, 12px);
  font-weight: 600;
  letter-spacing: 0;
  transition:
    color 160ms ease,
    background 160ms ease,
    box-shadow 160ms ease;
}

.control-tab.is-active {
  color: #fff;
  background: transparent;
  box-shadow: none;
}

.control-tab.is-gesture-hovered {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.gesture-cursor {
  --gesture-dwell-angle: 0deg;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 2147483646;
  width: 18px;
  height: 18px;
  pointer-events: none;
  opacity: 0;
  background: #fff;
  border: 2px solid #050506;
  border-radius: 50%;
  box-shadow:
    0 0 0 2px rgba(255, 255, 255, 0.5),
    0 4px 14px rgba(0, 0, 0, 0.5);
  transform: translate3d(-50%, -50%, 0) scale(0.72);
  transition:
    left 55ms linear,
    top 55ms linear,
    opacity 120ms ease,
    transform 120ms ease;
  will-change: left, top, transform;
}

.gesture-cursor::after {
  position: absolute;
  inset: -7px;
  padding: 2px;
  content: "";
  pointer-events: none;
  opacity: 0;
  background: conic-gradient(
    #fff var(--gesture-dwell-angle),
    rgba(255, 255, 255, 0.16) 0
  );
  border-radius: 50%;
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  transition: opacity 100ms ease;
}

.gesture-cursor.is-visible {
  opacity: 1;
  transform: translate3d(-50%, -50%, 0) scale(1);
}

.gesture-cursor.is-pinching {
  transform: translate3d(-50%, -50%, 0) scale(0.62);
}

.gesture-cursor.is-dwelling::after {
  opacity: 1;
}

.tab-icon {
  display: inline-flex;
  width: 15px;
  height: 15px;
  flex: 0 0 auto;
}

.tab-icon svg {
  width: 100%;
  height: 100%;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.mode-instruction {
  flex: 0 0 auto;
  width: 100%;
  min-height: 3.1em;
  margin: clamp(14px, 2vh, 20px) 0 clamp(14px, 2.2vh, 22px);
  color: var(--soft);
  font-size: clamp(13px, 1.05vw, 15px);
  font-weight: 300;
  line-height: 1.55;
  letter-spacing: 0;
  text-align: center;
}

.artwork-stack {
  --drag-y: 0px;
  position: absolute;
  inset: 0;
  z-index: 1;
  cursor: grab;
  perspective: 1400px;
  touch-action: none;
  transform: translate3d(0, var(--drag-y), 0);
  transform-style: preserve-3d;
  transition: transform 180ms ease-out;
  user-select: none;
}

.artwork-stack[data-dragging="true"] {
  cursor: grabbing;
  transition: none;
}

.artwork-stack[data-dragging="true"] .artwork-card.is-active {
  cursor: grabbing;
}

.artwork-card {
  --card-y: 0px;
  --card-z: 0px;
  --card-rotate: 0deg;
  --card-scale: 1;
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  padding: 0;
  overflow: hidden;
  color: #fff;
  text-align: left;
  cursor: pointer;
  appearance: none;
  background: #050607;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 18px;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.52);
  opacity: 1;
  transform: translate3d(0, var(--card-y), var(--card-z)) rotateX(var(--card-rotate))
    scale(var(--card-scale));
  transform-origin: center;
  transform-style: preserve-3d;
  transition:
    transform 480ms cubic-bezier(0.22, 1, 0.36, 1),
    opacity 320ms ease,
    border-color 320ms ease,
    filter 320ms ease;
  will-change: transform;
}

.artwork-card.is-active {
  cursor: grab;
  border-color: rgba(255, 255, 255, 0.24);
  box-shadow: 0 30px 96px rgba(0, 0, 0, 0.64);
}

.artwork-card:focus-visible,
.stack-arrow:focus-visible,
.artwork-rail:focus-visible {
  outline: 1px solid #fff;
  outline-offset: 3px;
}

.frame-reel {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
  border-radius: inherit;
  transform: scaleX(-1);
  transform-origin: center;
  filter: contrast(1.04) saturate(1.08);
  pointer-events: none;
}

.artwork-switcher {
  position: absolute;
  top: 50%;
  right: 14px;
  z-index: 50;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 40px;
  padding: 5px;
  color: #fff;
  background: rgba(3, 3, 4, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  box-shadow: 0 18px 54px rgba(0, 0, 0, 0.48);
  backdrop-filter: blur(16px);
  transform: translateY(-50%);
}

.stack-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  padding: 0;
  color: rgba(255, 255, 255, 0.78);
  cursor: pointer;
  background: transparent;
  border: 0;
  border-radius: 50%;
  transition:
    color 160ms ease,
    background 160ms ease,
    opacity 160ms ease;
}

.stack-arrow:hover {
  color: #000;
  background: #fff;
}

.stack-arrow.is-gesture-hovered {
  color: #000;
  background: #fff;
}

.stack-arrow:disabled {
  cursor: default;
  opacity: 0.24;
}

.stack-arrow:disabled:hover {
  color: rgba(255, 255, 255, 0.78);
  background: transparent;
}

.stack-arrow svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.artwork-rail {
  position: relative;
  width: 28px;
  height: 58px;
  cursor: ns-resize;
  touch-action: none;
}

.artwork-rail::before {
  position: absolute;
  top: 7px;
  bottom: 7px;
  left: 50%;
  width: 1px;
  content: "";
  background: rgba(255, 255, 255, 0.2);
  transform: translateX(-50%);
}

.artwork-thumb {
  position: absolute;
  top: 7px;
  left: 50%;
  width: 7px;
  height: 14px;
  background: #fff;
  border-radius: 999px;
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.08);
  transform: translateX(-50%);
  transition: top 360ms cubic-bezier(0.22, 1, 0.36, 1);
}

.artwork-counter {
  display: inline-block;
  margin: 2px 0;
  color: rgba(255, 255, 255, 0.62);
  font-size: 8px;
  font-weight: 500;
  line-height: 1;
  white-space: nowrap;
}

.camera-panel {
  position: relative;
  z-index: 5;
  flex: 0 0 auto;
  width: 100%;
  aspect-ratio: 3 / 4;
  height: auto;
  overflow: hidden;
  color: #fff;
  background: var(--panel-surface);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 22px 70px rgba(0, 0, 0, 0.48);
  backdrop-filter: blur(18px);
  user-select: none;
}

.camera-chrome {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 8px;
  height: 32px;
  padding: 0 12px;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.16), transparent);
}

.status-text {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.gesture-meter {
  position: relative;
  width: 54px;
  height: 4px;
  flex: 0 0 auto;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.18);
}

.gesture-fill {
  position: absolute;
  inset: 0;
  width: 0%;
  background: var(--accent);
  border-radius: inherit;
  transition: width 80ms linear;
}

.camera-stage,
.webcam,
.overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.webcam {
  object-fit: cover;
  transform: scaleX(-1);
  background: #070708;
}

.overlay {
  z-index: 2;
  pointer-events: none;
}

.retry-button {
  position: absolute;
  right: 12px;
  bottom: 12px;
  z-index: 4;
  min-width: 78px;
  height: 34px;
  padding: 0 14px;
  color: #000;
  font-size: 13px;
  font-weight: 650;
  line-height: 1;
  cursor: pointer;
  background: #fff;
  border: 0;
  border-radius: 6px;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.22);
}

.retry-button[hidden] {
  display: none;
}

@media (max-width: 1500px) and (min-width: 861px) {
  :root {
    --stage-pad: clamp(20px, 2.2vw, 32px);
    --control-width: clamp(260px, 23vw, 320px);
    --content-gap: clamp(28px, 3.2vw, 44px);
  }

  .site-title {
    font-size: clamp(42px, 14cqw, 50px);
  }

  .site-header {
    margin-bottom: clamp(16px, 2vh, 24px);
  }

  .site-subtitle {
    margin-top: 12px;
    font-size: 13px;
    line-height: 1.5;
  }

  .control-tabs {
    --tab-inset: 4px;
    min-width: 0;
    padding: 4px;
  }

  .control-tab {
    gap: 3px;
    height: 34px;
    padding: 0 3px;
    font-size: 9.5px;
  }

  .mode-instruction {
    min-height: 2.6em;
    margin-top: 12px;
    margin-bottom: 14px;
    font-size: 13px;
  }
}

@media (max-width: 860px) {
  :root {
    --stage-pad: 18px;
    --control-width: 100%;
    --content-gap: 28px;
  }

  .stage {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
    gap: var(--content-gap);
    align-content: start;
    align-items: start;
    justify-items: center;
    padding: var(--stage-pad) 18px;
  }

  .interface-panel {
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: min(100%, 560px);
    gap: 0;
  }

  .site-header {
    margin-bottom: 24px;
  }

  .site-title {
    font-size: clamp(46px, 9vw, 64px);
  }

  .control-tabs {
    width: min(100%, 520px);
    min-width: 0;
    margin-bottom: 18px;
  }

  .mode-instruction {
    width: min(100%, 520px);
    min-height: 0;
    margin: 0;
  }

  .camera-panel {
    position: fixed;
    right: 18px;
    bottom: 18px;
    left: auto;
    z-index: 2147483647;
    width: clamp(132px, 20vw, 172px);
    cursor: grab;
    touch-action: none;
    will-change: left, top;
  }

  .camera-panel[data-dragging="true"] {
    cursor: grabbing;
  }

  .camera-chrome::after {
    position: absolute;
    top: 8px;
    left: 50%;
    width: 28px;
    height: 3px;
    content: "";
    background: rgba(255, 255, 255, 0.72);
    border-radius: 999px;
    transform: translateX(-50%);
  }

  .visual-panel {
    align-self: start;
    justify-self: center;
    width: min(100%, 860px, calc((100svh - 250px) * 4 / 3));
    height: auto;
  }

  .frame-reel {
    height: 100%;
    min-height: 0;
  }

  .artwork-card {
    border-radius: 14px;
  }

  .artwork-switcher {
    right: 10px;
    width: 38px;
  }

  .stage::before {
    background: linear-gradient(
      180deg,
      rgba(0, 0, 0, 0.12) 0%,
      rgba(0, 0, 0, 0.08) 42%,
      rgba(0, 0, 0, 0.02) 100%
    );
  }
}

@media (max-width: 640px) {
  :root {
    --stage-pad: 18px;
    --control-width: 100%;
  }

  .stage {
    padding: var(--stage-pad) 14px;
  }

  .interface-panel {
    width: 100%;
  }

  .site-title {
    font-size: clamp(44px, 13vw, 58px);
  }

  .site-header {
    margin-bottom: 24px;
  }

  .control-tabs {
    width: min(100%, 430px);
    min-width: 0;
    margin-bottom: 18px;
  }

  .control-tab {
    gap: 3px;
    height: 34px;
    padding: 0 3px;
    font-size: 9.5px;
  }

  .tab-icon {
    width: 14px;
    height: 14px;
  }

  .site-subtitle {
    max-width: 30em;
    margin-top: 14px;
    font-size: 15px;
    line-height: 1.5;
  }

  .mode-instruction {
    width: min(100%, 430px);
    min-height: 0;
    margin: 0;
  }

  .camera-panel {
    right: 16px;
    bottom: 16px;
    width: clamp(116px, 34vw, 148px);
  }

  .visual-panel {
    width: min(100%, 860px);
  }

  .frame-reel {
    border-radius: 14px;
  }

}

@media (max-height: 760px) and (min-width: 861px) {
  :root {
    --stage-pad: clamp(20px, 2.2vw, 32px);
    --control-width: clamp(260px, 22vw, 340px);
    --content-gap: clamp(32px, 4vw, 60px);
  }

  .site-title {
    font-size: clamp(42px, 4vw, 60px);
  }

  .site-header {
    margin-bottom: 16px;
  }

  .mode-instruction {
    min-height: 2.6em;
    margin-top: 10px;
    margin-bottom: 12px;
  }
}