/* bertin.cd tour HUD
   White gallery inside, brand chrome outside. */

:root {
  --yellow: #FFC700;
  --yellow-deep: #EAB000;
  --blue: #0B1E3C;
  --blue-deep: #071530;
  --paper: #FFFDF6;
  --white: #FFFFFF;
  --font: 'Titillium Web', 'Segoe UI', Arial, sans-serif;
  --ease: cubic-bezier(.22, .8, .28, 1);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  font-family: var(--font);
  background: var(--blue-deep);
  color: var(--blue);
  -webkit-text-size-adjust: 100%;
}

#tour-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
}

/* soft vignette to seat the 3D space */
.t-vignette {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  background: radial-gradient(120% 90% at 50% 45%, transparent 62%, rgba(7, 21, 48, .28) 100%);
}

/* ---------- loader ---------- */
.t-loader {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: grid;
  place-items: center;
  background: var(--paper);
  transition: opacity .45s var(--ease), visibility .45s var(--ease);
}
.t-loader.hide { opacity: 0; visibility: hidden; }
.t-loader-inner { text-align: center; }
.t-loader-name {
  font-weight: 900;
  font-size: clamp(1.6rem, 4.6vw, 2.6rem);
  letter-spacing: -.01em;
  color: var(--blue-deep);
}
.t-loader-sub {
  margin-top: 8px;
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: rgba(11, 30, 60, .55);
}
.t-loader-bar {
  margin: 26px auto 0;
  width: 148px;
  height: 5px;
  border-radius: 99px;
  background: rgba(11, 30, 60, .12);
  overflow: hidden;
  position: relative;
}
.t-loader-bar::after {
  content: "";
  position: absolute;
  inset: 0;
  width: 42%;
  border-radius: 99px;
  background: var(--yellow);
  animation: tload 1.1s var(--ease) infinite;
}
@keyframes tload {
  0% { transform: translateX(-110%); }
  100% { transform: translateX(360%); }
}

/* ---------- top bar ---------- */
.t-top {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px clamp(14px, 3vw, 26px);
  pointer-events: none;
}
.t-top > * { pointer-events: auto; }

.t-btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 11px 18px;
  border-radius: 999px;
  border: 0;
  background: rgba(255, 253, 246, .92);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  color: var(--blue-deep);
  font-family: var(--font);
  font-weight: 700;
  font-size: .92rem;
  cursor: pointer;
  box-shadow: 0 10px 26px -14px rgba(7, 21, 48, .5);
  transition: transform .18s var(--ease), background .18s var(--ease), color .18s var(--ease);
}
.t-btn:hover { transform: translateY(-1px); background: var(--white); }
.t-btn:active { transform: translateY(0) scale(.98); }
.t-btn svg { width: 17px; height: 17px; }
.t-btn .t-hide-sm { display: inline; }

.t-lang {
  margin-left: auto;
  display: inline-flex;
  border: 2px solid var(--blue);
  border-radius: 999px;
  overflow: hidden;
  background: rgba(255, 253, 246, .92);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  font-weight: 700;
  font-size: .85rem;
  box-shadow: 0 10px 26px -14px rgba(7, 21, 48, .5);
}
.t-lang button {
  border: 0;
  background: transparent;
  color: var(--blue);
  font-family: var(--font);
  font-weight: 700;
  padding: 9px 16px;
  cursor: pointer;
}
.t-lang button.on { background: var(--blue); color: var(--yellow); }

.t-vr { display: none; }
.t-vr.show { display: inline-flex; }

/* ---------- proximity card ---------- */
.t-card {
  position: fixed;
  left: 50%;
  bottom: clamp(16px, 4vh, 34px);
  transform: translate(-50%, 18px);
  z-index: 25;
  width: min(460px, calc(100vw - 28px));
  background: rgba(255, 255, 255, .96);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(11, 30, 60, .1);
  border-radius: 18px;
  box-shadow: 0 30px 60px -24px rgba(7, 21, 48, .55);
  padding: 18px 20px 16px;
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s var(--ease), transform .3s var(--ease), visibility .3s var(--ease);
}
.t-card.show { opacity: 1; visibility: visible; transform: translate(-50%, 0); cursor: pointer; }
.t-card .t-card-kicker {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: rgba(11, 30, 60, .55);
  margin-bottom: 6px;
}
.t-card .t-card-kicker .sq {
  width: 10px; height: 10px;
  background: var(--yellow);
  border-radius: 2px;
  transform: rotate(45deg);
  flex: none;
}
.t-card h3 {
  margin: 0 0 6px;
  font-size: 1.3rem;
  font-weight: 900;
  letter-spacing: -.01em;
  color: var(--blue-deep);
}
.t-card p { margin: 0; font-size: .96rem; line-height: 1.5; color: rgba(11, 30, 60, .85); }
.t-card .t-card-meta {
  margin-top: 8px;
  font-size: .8rem;
  font-weight: 600;
  color: rgba(11, 30, 60, .55);
}
.t-card .t-card-enter {
  margin-top: 12px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border: 0;
  border-radius: 999px;
  background: var(--yellow);
  color: var(--blue-deep);
  font-family: var(--font);
  font-weight: 700;
  font-size: .92rem;
  cursor: pointer;
  transition: transform .18s var(--ease), background .18s var(--ease);
}
.t-card .t-card-enter:hover { transform: translateY(-1px); background: #FFD23D; }
.t-card .t-card-enter svg { width: 16px; height: 16px; }

/* ---------- joystick ---------- */
.t-joy {
  position: fixed;
  z-index: 22;
  width: 112px; height: 112px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, .55);
  background: rgba(11, 30, 60, .28);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  display: none;
  pointer-events: none;
}
.t-joy .t-joy-knob {
  position: absolute;
  left: 50%; top: 50%;
  width: 52px; height: 52px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .92);
  transform: translate(-50%, -50%);
  box-shadow: 0 6px 16px -6px rgba(7, 21, 48, .6);
}
.t-joy.show { display: block; }

/* ---------- pointer lock hint ---------- */
.t-hint {
  position: fixed;
  left: 50%;
  bottom: clamp(16px, 4vh, 34px);
  transform: translateX(-50%);
  z-index: 24;
  padding: 12px 22px;
  border-radius: 999px;
  background: rgba(7, 21, 48, .78);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  color: #fff;
  font-size: .9rem;
  font-weight: 600;
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s var(--ease), visibility .3s var(--ease);
  pointer-events: none;
}
.t-hint.show { opacity: 1; visibility: visible; }

/* ---------- fallback ---------- */
.t-fallback {
  position: fixed;
  inset: 0;
  z-index: 70;
  display: none;
  background: var(--paper);
}
.t-fallback.show { display: block; }
.t-fallback .tf-inner {
  min-height: 100%;
  display: grid;
  place-items: center;
  padding: 24px;
}
.t-fallback .tf-card {
  max-width: 560px;
  text-align: center;
}
.t-fallback img {
  width: 100%;
  border-radius: 20px;
  box-shadow: 0 30px 60px -30px rgba(7, 21, 48, .5);
  margin-bottom: 26px;
}
.t-fallback h1 {
  font-size: clamp(1.7rem, 5vw, 2.4rem);
  font-weight: 900;
  letter-spacing: -.01em;
  margin: 0 0 12px;
  color: var(--blue-deep);
}
.t-fallback p { font-size: 1.05rem; color: rgba(11, 30, 60, .8); margin: 0 0 26px; }
.t-fallback .t-btn { background: var(--yellow); text-decoration: none; }

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .t-loader-bar::after { animation: none; width: 100%; }
}