/* Visita virtual · museovangogh.org */
:root {
  --tinta: #1d1b17;
  --papel: #f6f1e7;
  --papel-2: #ece4d3;
  --ocre: #c8961e;
  --ocre-osc: #8a6510;
  --azul: #1f3a52;
  --gris: #6b655b;
  --ui-bg: rgba(20, 22, 26, .78);
  --ui-tx: #f4efe4;
  --serif: Georgia, "Iowan Old Style", "Palatino Linotype", "Times New Roman", serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { font-family: var(--sans); color: var(--tinta); background: var(--papel); }
a { color: var(--ocre-osc); }
button { font: inherit; cursor: pointer; }
:focus-visible { outline: 3px solid var(--ocre); outline-offset: 2px; }

/* ---------- Sala 3D ---------- */
body.sala { background: #111; overflow: hidden; height: 100dvh; overscroll-behavior: none; }
#c { touch-action: none; position: fixed; inset: 0; width: 100%; height: 100%; display: block; cursor: grab; }
#c.arrastrando { cursor: grabbing; }
#c.sobre-obra { cursor: zoom-in; }
#c.sobre-suelo { cursor: crosshair; }
#c.sobre-ventana { cursor: pointer; }

.top {
  position: fixed; top: 0; left: 0; right: 0; z-index: 5;
  display: flex; align-items: center; gap: 12px; padding: 10px 16px;
  background: linear-gradient(rgba(10,10,12,.72), rgba(10,10,12,0)); color: var(--ui-tx);
  pointer-events: none;
}
.top > * { pointer-events: auto; }
.marca { color: var(--ui-tx); text-decoration: none; font-family: var(--serif); font-size: 15px; white-space: nowrap; }
.marca b { color: #e9c25a; font-weight: normal; }
.sala-nombre { font-family: var(--serif); font-size: 15px; opacity: .85; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.top nav { margin-left: auto; display: flex; gap: 8px; }
.pill {
  display: inline-flex; align-items: center; gap: 6px; min-height: 36px; padding: 0 14px;
  border-radius: 18px; border: 1px solid rgba(255,255,255,.25); background: var(--ui-bg); color: var(--ui-tx);
  text-decoration: none; font-size: 14px; white-space: nowrap;
}
.pill:hover { background: rgba(40,42,48,.9); }
.pill.redondo { width: 36px; padding: 0; justify-content: center; }

.inicio {
  position: fixed; inset: 0; z-index: 20; display: flex; padding: 16px; overflow-y: auto;
  background: radial-gradient(ellipse at 50% 30%, #2b3d4d 0%, #12161b 70%); color: var(--ui-tx);
}
.inicio .caja { max-width: 560px; text-align: center; margin: auto; }
.inicio .eyebrow { letter-spacing: .18em; text-transform: uppercase; font-size: 12px; color: #e9c25a; margin: 0 0 10px; }
.inicio h1 { font-family: var(--serif); font-weight: normal; font-size: clamp(34px, 8vw, 56px); margin: 0 0 4px; }
.inicio .periodo { font-family: var(--serif); font-style: italic; opacity: .8; margin: 0 0 18px; }
.inicio .intro { line-height: 1.55; opacity: .9; margin: 0 0 22px; }
.barra { height: 4px; background: rgba(255,255,255,.15); border-radius: 2px; overflow: hidden; margin: 0 auto 18px; max-width: 320px; }
.barra i { display: block; height: 100%; width: 0; background: #e9c25a; transition: width .2s; }
.entrar {
  min-height: 48px; padding: 0 28px; border-radius: 24px; border: 0; background: #e9c25a; color: #1d1b17;
  font-size: 17px; font-weight: 600;
}
.entrar:disabled { opacity: .45; cursor: progress; }
.inicio .ayuda { font-size: 14px; opacity: .75; margin: 18px 0 8px; line-height: 1.5; }
.inicio .alt { font-size: 14px; color: #e9c25a; }
.inicio[hidden] { display: none; }
.inicio.llegando .caja > :not(.barra) { visibility: hidden; }   /* se llega por una puerta: solo la barra de carga */
#c { transition: opacity .28s; }
body.saliendo #c { opacity: 0; }
.inicio .salas-lista { list-style: none; padding: 0; margin: 0 auto 20px; max-width: 420px; text-align: left; }
.inicio .salas-lista li { border-top: 1px solid rgba(255,255,255,.12); }
.inicio .salas-lista a { display: flex; flex-wrap: wrap; gap: 10px; align-items: baseline; padding: 8px 4px; color: var(--ui-tx); text-decoration: none; }
@media (max-width: 560px) { .inicio .salas-lista small { flex-basis: 100%; margin-left: 60px; white-space: normal; } }
.inicio .salas-lista a:hover { color: #e9c25a; }
.inicio .salas-lista b { font-family: var(--serif); font-weight: normal; font-size: 18px; white-space: nowrap; }
.inicio .salas-lista small { opacity: .7; margin-left: auto; white-space: nowrap; }
.inicio .salas-lista span { white-space: nowrap; opacity: .7; font-size: 13px; min-width: 50px; }

.tour {
  position: fixed; left: 50%; bottom: max(16px, env(safe-area-inset-bottom)); transform: translateX(-50%); z-index: 5;
  display: flex; align-items: center; gap: 8px; width: min(560px, calc(100% - 32px));
}
.tour .flecha {
  flex: none; width: 48px; height: 48px; border-radius: 50%; border: 1px solid rgba(255,255,255,.25);
  background: var(--ui-bg); color: var(--ui-tx); font-size: 22px; line-height: 1;
}
.tour-info {
  flex: 1; min-width: 0; min-height: 48px; border-radius: 24px; border: 1px solid rgba(255,255,255,.25);
  background: var(--ui-bg); color: var(--ui-tx); padding: 6px 18px; text-align: center; display: flex; flex-direction: column; justify-content: center;
}
.tour-info small { opacity: .7; font-size: 12px; }
.tour-info span { font-family: var(--serif); font-size: 15px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.hint {
  position: fixed; left: 50%; top: 64px; transform: translateX(-50%); z-index: 5; max-width: calc(100% - 32px);
  background: var(--ui-bg); color: var(--ui-tx); padding: 10px 16px; border-radius: 12px; font-size: 14px; text-align: center;
  transition: opacity .6s; pointer-events: none;
}
.hint.oculto { opacity: 0; }

.card {
  position: fixed; inset: 0; z-index: 30; display: flex; padding: 16px; overflow-y: auto; background: rgba(0,0,0,.55);
}
.card .caja { margin: auto; }
.card[hidden] { display: none; }
.card .caja { background: var(--papel); border-radius: 14px; max-width: 420px; width: 100%; overflow: hidden; box-shadow: 0 20px 60px rgba(0,0,0,.4); }
.card img { width: 100%; height: auto; max-height: 34dvh; display: block; aspect-ratio: 3 / 2; object-fit: cover; }
.card .cuerpo { padding: 18px 20px 20px; }
.card h2 { font-family: var(--serif); font-weight: normal; margin: 0 0 8px; font-size: 22px; }
.card p { margin: 0 0 12px; line-height: 1.5; font-size: 15px; }
.card .credito { font-size: 12px; color: var(--gris); }
.card .acciones { display: flex; gap: 10px; justify-content: flex-end; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; min-height: 42px; padding: 0 18px; border-radius: 21px; border: 1px solid var(--tinta); background: transparent; color: var(--tinta); text-decoration: none; font-size: 15px; }
.btn.lleno { background: var(--azul); border-color: var(--azul); color: #fff; }

.sin-webgl { position: fixed; inset: 0; display: grid; place-items: center; color: #fff; text-align: center; padding: 16px; }

/* ---------- Visor (OpenSeadragon + cartela) ---------- */
.visor { position: fixed; inset: 0; z-index: 40; display: grid; grid-template-columns: 1fr 380px; background: #0d0d0f; color: var(--ui-tx); }
.visor[hidden] { display: none; }
.visor-osd { position: relative; min-height: 0; background: #0d0d0f; }
.visor-osd .osd { position: absolute; inset: 0; }
.visor-barra {
  position: absolute; left: 50%; bottom: max(16px, env(safe-area-inset-bottom)); transform: translateX(-50%); z-index: 2;
  display: flex; gap: 6px; background: var(--ui-bg); border: 1px solid rgba(255,255,255,.2); padding: 6px; border-radius: 28px;
}
.visor-barra button { width: 44px; height: 44px; border-radius: 50%; border: 0; background: transparent; color: var(--ui-tx); font-size: 20px; line-height: 1; }
.visor-barra button:hover { background: rgba(255,255,255,.12); }
.visor-cerrar {
  position: absolute; top: max(12px, env(safe-area-inset-top)); right: 12px; z-index: 3; width: 44px; height: 44px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,.25); background: var(--ui-bg); color: var(--ui-tx); font-size: 22px; line-height: 1;
}
.visor-carga { position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); font-size: 14px; opacity: .7; pointer-events: none; }
.cartela { background: var(--papel); color: var(--tinta); overflow-y: auto; padding: 28px 26px 32px; }
.cartela .num { font-family: var(--serif); color: var(--ocre-osc); margin: 0 0 6px; font-size: 14px; letter-spacing: .1em; }
.cartela h2 { font-family: var(--serif); font-weight: normal; font-size: 26px; line-height: 1.2; margin: 0 0 4px; }
.cartela .orig { font-style: italic; color: var(--gris); margin: 0 0 14px; }
.cartela .datos { font-size: 14px; line-height: 1.6; margin: 0 0 16px; padding-bottom: 14px; border-bottom: 1px solid var(--papel-2); }
.cartela .sobre { line-height: 1.6; margin: 0 0 16px; }
.cartela blockquote { margin: 0 0 6px; padding: 0 0 0 14px; border-left: 3px solid var(--ocre); font-family: var(--serif); font-style: italic; font-size: 17px; line-height: 1.55; }
.cartela .ctx { font-size: 14px; color: var(--gris); margin: 0 0 6px; line-height: 1.5; }
.cartela .carta { font-size: 13px; color: var(--gris); margin: 0 0 20px; }
.cartela .ficha { display: inline-flex; align-items: center; min-height: 44px; padding: 0 20px; border-radius: 22px; background: var(--azul); color: #fff; text-decoration: none; font-size: 15px; }
.cartela .credito { font-size: 12px; color: var(--gris); margin: 18px 0 0; }
.cartela .credito a { color: var(--gris); }
.cartela .plegar { display: none; }

@media (max-width: 820px) {
  .visor { grid-template-columns: 1fr; grid-template-rows: 1fr auto; }
  .cartela { max-height: 46dvh; padding: 0 18px 24px; border-radius: 16px 16px 0 0; margin-top: -14px; position: relative; z-index: 4; }
  .cartela .plegar {
    display: flex; width: 100%; justify-content: center; align-items: center; gap: 8px; height: 40px; border: 0;
    background: transparent; color: var(--gris); font-size: 13px; position: sticky; top: 0; background: var(--papel);
  }
  .cartela .plegar::before { content: ""; width: 36px; height: 4px; border-radius: 2px; background: #cfc6b4; }
  .cartela.plegada { max-height: 120px; }
  .cartela { overscroll-behavior: contain; touch-action: pan-y; }
  .cartela h2 { font-size: 21px; }
  .visor-barra { bottom: 10px; }
  .sala-nombre { display: none; }
}
@media (max-width: 420px) {
  .marca span { display: none; }
}

/* ---------- Versión en lista ---------- */
body.lista { background: var(--papel); }
.lista .cab { background: var(--azul); color: #fff; padding: 16px 16px 40px; }
.lista .cab .barra-sup { display: flex; gap: 12px; align-items: center; max-width: 1100px; margin: 0 auto 36px; }
.lista .cab .barra-sup a { color: #fff; }
.lista .cab .barra-sup .pill { margin-left: auto; background: rgba(255,255,255,.12); }
.lista .cab .tit { max-width: 1100px; margin: 0 auto; }
.lista .cab h1 { font-family: var(--serif); font-weight: normal; font-size: clamp(30px, 6vw, 48px); margin: 0 0 6px; }
.lista .cab .periodo { font-family: var(--serif); font-style: italic; opacity: .85; margin: 0 0 14px; }
.lista .cab .intro { max-width: 680px; line-height: 1.6; margin: 0 0 20px; opacity: .92; }
.lista .cab .btn { color: #fff; border-color: rgba(255,255,255,.6); }
.lista .cab .btn.lleno { background: #e9c25a; border-color: #e9c25a; color: var(--tinta); }
.lista main { max-width: 1100px; margin: 0 auto; padding: 24px 16px 60px; }
.obra { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 36px; align-items: center; padding: 40px 0; border-bottom: 1px solid var(--papel-2); }
.obra .lienzo { position: relative; padding: 0; border: 0; background: none; display: block; width: 100%; }
.obra .lienzo img { width: 100%; height: auto; display: block; box-shadow: 0 0 0 8px #3b2f20, 0 0 0 9px #8a6a3a, 0 14px 30px rgba(0,0,0,.25); }
.obra .lupa { position: absolute; right: 14px; bottom: 14px; background: var(--ui-bg); color: #fff; padding: 8px 14px; border-radius: 18px; font-size: 14px; }
.obra .num { font-family: var(--serif); color: var(--ocre-osc); margin: 0 0 6px; letter-spacing: .1em; }
.obra h2 { font-family: var(--serif); font-weight: normal; font-size: 28px; line-height: 1.2; margin: 0 0 4px; }
.obra .orig { font-style: italic; color: var(--gris); margin: 0 0 14px; }
.obra .datos { font-size: 15px; line-height: 1.6; margin: 0 0 14px; }
.obra .sobre { line-height: 1.65; margin: 0 0 16px; }
.obra blockquote { margin: 0 0 6px; padding-left: 14px; border-left: 3px solid var(--ocre); font-family: var(--serif); font-style: italic; font-size: 18px; line-height: 1.55; }
.obra .ctx { font-size: 14px; color: var(--gris); margin: 0 0 6px; }
.obra .carta { font-size: 14px; color: var(--gris); margin: 0 0 14px; }
.obra .links { font-size: 14px; }
.lista .ventana-lista { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 36px; align-items: center; padding: 40px 0; }
.lista .ventana-lista img { width: 100%; height: auto; display: block; border-radius: 4px; }
.lista footer { max-width: 1100px; margin: 0 auto; padding: 0 16px 40px; font-size: 13px; color: var(--gris); line-height: 1.6; }
@media (max-width: 760px) {
  .obra, .lista .ventana-lista { grid-template-columns: 1fr; gap: 22px; padding: 28px 0; }
  .obra h2 { font-size: 24px; }
}
body.lista.visor-abierto { overflow: hidden; }