/* =========================================================
   Siente Studio · Librería de proyectos (estilos)
   Todo va dentro de .libreria para poder llevarlo a cualquier
   página. Colores y medidas en las variables de abajo.
   ========================================================= */
:where(.libreria) { position: relative; }
.libreria {
  --lib-bg: transparent;
  --lib-shelf: rgba(255, 255, 255, 0.22);
  --lib-paper: #efe9dc;
  --lib-text: #e9ecef;
  --lib-muted: #9aa1a9;
  --lib-accent: #c8f23a;
  --lib-h: 420px;
  --lib-ease: cubic-bezier(0.16, 1, 0.3, 1);
  color: var(--lib-text);
  outline: none;
  user-select: none;
  -webkit-user-select: none;
}

/* Dentro de un panel a pantalla completa (/proyectos/): ocupa todo el panel,
   deja libre la cabecera y la etiqueta del panel, y centra la estantería */
.frame__stage.libreria {
  display: flex; flex-direction: column; justify-content: center;
  padding-top: calc(var(--header-h, 76px) + 76px); padding-bottom: 28px;
}
.frame__stage.libreria .lib__info { width: 100%; }

/* ---------- escenario ---------- */
.lib__stage {
  position: relative;
  height: calc(var(--lib-h) + 70px);
  overflow: hidden;
  cursor: grab;
  touch-action: pan-y;
}
.libreria.is-dragging .lib__stage { cursor: grabbing; }
.lib__aura {
  position: absolute; left: 50%; bottom: 10px;
  width: min(900px, 120vw); height: calc(var(--lib-h) * 1.1);
  transform: translateX(-50%);
  background:
    radial-gradient(40% 55% at 38% 70%, rgba(34, 184, 232, 0.22), transparent 70%),
    radial-gradient(38% 50% at 64% 72%, rgba(200, 242, 58, 0.16), transparent 70%);
  filter: blur(20px);
  pointer-events: none;
}
.lib__books {
  position: absolute; left: 50%; bottom: 34px; width: 0; height: var(--lib-h);
}
.lib__shelf {
  position: absolute; left: 0; right: 0; bottom: 33px; height: 1px;
  background: var(--lib-shelf);
}
.lib__shelf::after { /* sombra bajo la balda */
  content: ""; position: absolute; left: 0; right: 0; top: 1px; height: 26px;
  background: linear-gradient(rgba(0, 0, 0, 0.45), transparent);
}

/* ---------- libro ---------- */
.lib__book {
  position: absolute; left: 0; bottom: 0; height: var(--h);
  will-change: transform;
  color: var(--t);
  -webkit-tap-highlight-color: transparent;
}
.lib__book:focus-visible { outline: none; }
.lib__book:focus-visible .lib__spine,
.lib__book:focus-visible .lib__front { outline: 2px solid var(--lib-accent); outline-offset: 3px; }
.lib__tilt, .lib__lift { position: absolute; left: 0; bottom: 0; height: 100%; }
.lib__lift { width: 100%; transition: transform 0.5s var(--lib-ease); }
@media (hover: hover) {
  .lib__book:not(.is-open):hover .lib__lift { transform: translateY(-14px); }
  .lib__book.is-open:hover .lib__lift { transform: translateY(-6px); }
}
.lib__body {
  position: absolute; left: 0; bottom: 0;
  transform-style: preserve-3d;
}
.lib__face {
  position: absolute; left: 0; top: 0;
  backface-visibility: hidden; -webkit-backface-visibility: hidden;
  background: var(--c);
  overflow: hidden;
}
/* luz suave para que se lea el volumen */
.lib__spine::after, .lib__front::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
}
.lib__spine::after {
  background: linear-gradient(90deg, rgba(0,0,0,.22), rgba(255,255,255,.10) 18%, transparent 40%, transparent 75%, rgba(0,0,0,.18));
}
.lib__front::after {
  background: linear-gradient(90deg, rgba(0,0,0,.28), rgba(255,255,255,.06) 2.5%, transparent 6%, transparent 85%, rgba(0,0,0,.10));
}
.lib__back { filter: brightness(0.7); }
.lib__pages, .lib__top {
  background: repeating-linear-gradient(90deg, var(--lib-paper) 0 2px, #d9d2c3 2px 3px);
}
.lib__top { background: repeating-linear-gradient(0deg, var(--lib-paper) 0 2px, #d9d2c3 2px 3px); }

/* ---------- lomo ---------- */
.lib__spine {
  display: flex; flex-direction: column; align-items: center; justify-content: space-between;
  padding: calc(var(--fs) * 0.7) 0 calc(var(--fs) * 0.6);
  color: var(--t);
}
.lib__spine-txt {
  writing-mode: vertical-rl; transform: rotate(180deg);
  flex: 1; display: flex; align-items: center; justify-content: flex-start;
  padding: calc(var(--fs) * 0.6) 0;
  font-size: var(--fs); line-height: 1; white-space: nowrap; overflow: hidden;
}
.lib__spine--sans .lib__spine-txt { font-family: "Montserrat", system-ui, sans-serif; font-weight: 700; text-transform: uppercase; letter-spacing: 0.02em; }
.lib__spine--serif .lib__spine-txt { font-family: "Andine", Georgia, serif; font-size: calc(var(--fs) * 1.15); letter-spacing: 0; }
.lib__spine--espaciada .lib__spine-txt { font-family: "Montserrat", system-ui, sans-serif; font-weight: 600; text-transform: uppercase; letter-spacing: 0.32em; font-size: calc(var(--fs) * 0.82); justify-content: center; }
.lib__spine-num {
  font: 600 calc(var(--fs) * 0.42)/1 "Montserrat", system-ui, sans-serif; letter-spacing: 0.06em; opacity: 0.75;
}
.lib__spine-mark {
  font: 700 calc(var(--fs) * 0.5)/1 "Montserrat", system-ui, sans-serif; opacity: 0.85;
}

/* ---------- tapa ---------- */
.lib__front {
  display: flex; flex-direction: column; align-items: stretch;
  padding: 9% 9% 7%; gap: 6%;
  color: var(--t);
}
.lib__cover-img { position: relative; flex: 1; min-height: 0; overflow: hidden; background: rgba(0,0,0,.15); }
.lib__cover-img img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.lib__cover-title {
  font-family: "Andine", Georgia, serif; font-size: calc(var(--lib-h) * 0.07); line-height: 1; letter-spacing: -0.01em;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.lib__cover-title--small { font-size: calc(var(--lib-h) * 0.05); text-align: center; }
.lib__cover-logo { flex: 1; display: grid; place-items: center; min-height: 0; }
.lib__cover-logo img { max-width: 64%; max-height: 52%; width: auto; height: auto; }
.lib__cover-logo.is-inverted img { filter: invert(1); }
.lib__cover-big {
  flex: 1; display: flex; align-items: flex-end;
  font-family: "Andine", Georgia, serif; font-size: calc(var(--lib-h) * 0.13); line-height: 0.92; letter-spacing: -0.02em;
}
.lib__cover-mark {
  font: 700 calc(var(--lib-h) * 0.026)/1 "Montserrat", system-ui, sans-serif; letter-spacing: 0.04em; opacity: 0.8;
}

/* ---------- información ---------- */
.lib__info {
  display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 12px 24px;
  padding: 18px max(20px, 5vw) 0;
  max-width: 1400px; margin: 0 auto;
}
.lib__count {
  grid-column: 1 / -1; display: flex; align-items: center; gap: 10px;
  font: 600 0.75rem/1 "Montserrat", system-ui, sans-serif; letter-spacing: 0.2em; color: var(--lib-muted);
  font-variant-numeric: tabular-nums;
}
.lib__count [data-n] { color: var(--lib-text); }
.lib__count-sep { width: 36px; height: 1px; background: currentColor; opacity: .5; }
.lib__caption { position: relative; display: grid; min-height: 9.5rem; }
.lib__cap { grid-area: 1 / 1; align-self: start; transition: opacity .5s var(--lib-ease), transform .6s var(--lib-ease), filter .5s var(--lib-ease); }
.lib__cap[data-enter] { opacity: 0; transform: translateY(18px); filter: blur(4px); transition: none; }
.lib__cap.is-leaving { opacity: 0; transform: translateY(-14px); filter: blur(4px); pointer-events: none; }
.lib__cap-cat { margin: 0 0 6px; font: 600 0.75rem/1.4 "Montserrat", system-ui, sans-serif; letter-spacing: 0.2em; text-transform: uppercase; color: var(--lib-muted); }
.lib__cap-title { margin: 0; font-family: "Andine", Georgia, serif; font-weight: 400; font-size: clamp(2rem, 1.3rem + 3vw, 4rem); line-height: 1; color: #fff; letter-spacing: -0.01em; }
.lib__cap-text { margin: 10px 0 0; max-width: 42ch; font: 400 clamp(0.95rem, 0.9rem + 0.2vw, 1.05rem)/1.55 "Montserrat", system-ui, sans-serif; color: var(--lib-text); }
.lib__cap-link {
  display: inline-flex; align-items: center; gap: 10px; margin-top: 14px;
  font: 600 0.78rem/1 "Montserrat", system-ui, sans-serif; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--lib-text); text-decoration: none; padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,.3);
  transition: color .3s, border-color .3s, gap .4s var(--lib-ease);
}
.lib__cap-link svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.6; }
.lib__cap-link:hover { color: var(--lib-accent); border-color: var(--lib-accent); gap: 16px; }
.lib__nav { display: flex; gap: 8px; align-self: start; }
.lib__btn {
  width: 48px; height: 48px; border-radius: 50%; display: grid; place-items: center;
  background: transparent; color: var(--lib-text); border: 1px solid rgba(255,255,255,.25);
  cursor: pointer; transition: background .3s, color .3s, border-color .3s, transform .2s;
}
.lib__btn svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.6; }
.lib__btn:hover { background: var(--lib-text); color: #050608; border-color: var(--lib-text); }
.lib__btn:active { transform: scale(0.94); }
.lib__btn:focus-visible { outline: 2px solid var(--lib-accent); outline-offset: 3px; }

@media (max-width: 640px) {
  .lib__stage { height: calc(var(--lib-h) + 56px); }
  .lib__books { bottom: 26px; }
  .lib__shelf { bottom: 25px; }
  .lib__nav { display: none; }
  .lib__info { grid-template-columns: 1fr; }
  .lib__caption { min-height: 11rem; }
}
@media (prefers-reduced-motion: reduce) {
  .lib__lift, .lib__cap { transition: none; }
}