@import url("https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,600&family=IBM+Plex+Mono:wght@400;500&display=swap");

:root {
  --bg: #020304;
  --surface: rgba(10, 12, 14, 0.72);
  --surface-strong: rgba(13, 16, 19, 0.92);
  --line: rgba(255, 255, 255, 0.14);
  --text: #f3f1ea;
  --muted: rgba(243, 241, 234, 0.68);
  --accent: #4da3ff;
  --shadow: 0 18px 54px rgba(0, 0, 0, 0.34);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at top center, rgba(77, 163, 255, 0.08), transparent 28%),
    radial-gradient(circle at bottom center, rgba(255, 255, 255, 0.04), transparent 42%),
    var(--bg);
  color: var(--text);
}

body {
  overflow: hidden;
  font-family: "Fraunces", Georgia, serif;
}

button,
input,
output {
  font: inherit;
}

.app-shell {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
}

.app-shell.orbiting .viewer-host {
  cursor: grabbing;
}

.viewer-host,
.viewer-backdrop,
.splat-stage,
.fallback-canvas {
  position: absolute;
  inset: 0;
}

.viewer-host {
  overflow: hidden;
  cursor: grab;
  background: #000;
}

.viewer-backdrop {
  z-index: 0;
  opacity: 0;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  filter: blur(40px) saturate(1.08);
  transform: scale(1.08);
  transition: opacity 220ms ease;
}

.viewer-host[data-has-backdrop="true"] .viewer-backdrop {
  opacity: 0.68;
}

.splat-stage,
.fallback-canvas {
  z-index: 2;
}

.fallback-canvas {
  transition: opacity 220ms ease;
}

.scene-overlay {
  position: absolute;
  inset: 0;
  z-index: 4;
  pointer-events: none;
  padding: 34px 18px 122px;
  color: rgba(245, 243, 236, 0.94);
  font-family: "IBM Plex Mono", monospace;
  text-transform: uppercase;
  opacity: 0;
  transition: opacity 220ms ease;
  transform-origin: 0 0;
  will-change: transform, opacity;
}

.scene-overlay-line {
  position: absolute;
  background: rgba(255, 255, 255, 0.72);
  opacity: 0.9;
  will-change: transform, width, opacity;
  transform-origin: 0 0;
  backface-visibility: hidden;
}

.scene-overlay-line-top {
  top: 34px;
  left: 18px;
  right: 18px;
  height: 1px;
}

.scene-overlay-line-notch {
  top: 34px;
  left: 50%;
  width: 1px;
  height: 132px;
  transform: translateX(-50%);
}

.scene-overlay-head {
  position: absolute;
  top: 76px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: min(22vw, 260px);
}

.scene-overlay-node {
  will-change: transform, opacity;
}

.scene-overlay-head-left {
  left: 18px;
  align-items: flex-start;
}

.scene-overlay-head-right {
  right: 18px;
  align-items: flex-end;
  text-align: right;
}

.scene-overlay-label,
.scene-overlay-block-label {
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.48);
}

.scene-overlay-subject,
.scene-overlay-count {
  font-size: 0.92rem;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.92);
}

.scene-hero {
  position: absolute;
  left: 50%;
  top: 31.5%;
  width: min(1220px, calc(100vw - 220px));
  transform: translate(-50%, -50%);
  display: flex;
  justify-content: center;
  display: none;
}

.scene-hero-text {
  margin: 0;
  font-size: clamp(1.55rem, 2.45vw, 3.35rem);
  line-height: 1.12;
  letter-spacing: 0.075em;
  text-align: center;
  text-wrap: balance;
  color: rgba(248, 246, 240, 0.94);
  text-shadow: 0 0 28px rgba(255, 255, 255, 0.04);
}

.scene-overlay-block {
  position: absolute;
  bottom: 120px;
  width: min(360px, 32vw);
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.scene-overlay-block-left {
  left: 18px;
  align-items: flex-start;
}

.scene-overlay-block-right {
  right: 18px;
  align-items: flex-end;
  text-align: right;
}

.scene-overlay-block-text {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.64;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.8);
  white-space: pre-line;
}

.scene-overlay-cross {
  position: absolute;
  left: 50%;
  bottom: 168px;
  transform: translateX(-50%);
  font-size: 4.25rem;
  line-height: 1;
  color: rgba(255, 255, 255, 0.86);
  text-shadow: 0 0 18px rgba(255, 255, 255, 0.12);
  display: none;
}

.scene-overlay[data-mode="world"] {
  padding: 0;
}

.scene-overlay[data-mode="world"] .scene-overlay-node,
.scene-overlay[data-mode="world"] .scene-overlay-line {
  top: 0;
  left: 0;
  right: auto;
  bottom: auto;
  transform-origin: 0 0;
}

.scene-overlay[data-mode="plane"] {
  padding: 34px 18px 122px;
}

.viewer-host[data-mode="splat"] .splat-stage,
.viewer-host[data-mode="parallax"] .fallback-canvas {
  opacity: 1;
}

.viewer-host[data-mode="splat"] .fallback-canvas,
.viewer-host[data-mode="parallax"] .splat-stage,
.viewer-host[data-mode="empty"] .fallback-canvas,
.viewer-host[data-mode="empty"] .splat-stage {
  opacity: 0;
  pointer-events: none;
}

.fallback-canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.control-bar {
  position: absolute;
  left: 50%;
  bottom: max(18px, env(safe-area-inset-bottom, 0px) + 10px);
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0;
  transform: translateX(-50%);
}

.reset-camera-btn {
  min-height: 46px;
  border: 0;
  border-radius: 999px;
  padding: 0 14px;
  background: transparent;
  color: rgba(243, 241, 234, 0.8);
  cursor: pointer;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.67rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  transition:
    transform 160ms ease,
    background 160ms ease,
    color 160ms ease,
    opacity 160ms ease;
}

.nav-btn {
  position: relative;
  width: 58px;
  min-width: 58px;
  padding: 0;
  color: rgba(243, 241, 234, 0.72);
}

.nav-btn::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 11px;
  height: 11px;
  border-top: 1px solid currentColor;
  border-right: 1px solid currentColor;
  transform-origin: 50% 50%;
}

.reset-camera-btn:hover:not(:disabled) {
  transform: translateY(-1px);
  color: rgba(255, 255, 255, 0.98);
}

.nav-btn-prev::before {
  transform: translate(-42%, -50%) rotate(-135deg);
}

.nav-btn-next::before {
  transform: translate(-58%, -50%) rotate(45deg);
}

.reset-camera-btn:disabled {
  opacity: 0.42;
  cursor: default;
}

@media (max-width: 720px) {
  .scene-overlay {
    padding: 22px 14px 108px;
  }

  .scene-overlay-line-top {
    top: 22px;
    left: 14px;
    right: 14px;
  }

  .scene-overlay-line-notch {
    top: 22px;
    height: 84px;
  }

  .scene-overlay-head {
    top: 54px;
    max-width: 34vw;
    gap: 6px;
  }

  .scene-overlay-label,
  .scene-overlay-block-label {
    font-size: 0.63rem;
  }

  .scene-overlay-subject,
  .scene-overlay-count {
    font-size: 0.74rem;
  }

  .scene-hero {
    top: 32%;
    width: calc(100vw - 48px);
  }

  .scene-hero-text {
    font-size: clamp(1rem, 6vw, 1.7rem);
    line-height: 1.18;
    letter-spacing: 0.06em;
  }

  .scene-overlay-block {
    bottom: 106px;
    width: min(44vw, 220px);
    gap: 10px;
  }

  .scene-overlay-block-text {
    font-size: 0.69rem;
    line-height: 1.5;
  }

  .scene-overlay-cross {
    bottom: 150px;
    font-size: 2.55rem;
  }

  .control-bar {
    width: auto;
    max-width: calc(100vw - 24px);
    justify-content: center;
    gap: 10px;
  }

  .reset-camera-btn {
    min-height: 42px;
    padding: 0 12px;
    font-size: 0.64rem;
    letter-spacing: 0.14em;
  }

  .nav-btn {
    width: 50px;
    min-width: 50px;
  }
}