:root {
  --bg: #0b0b0f;
  --panel: #16161d;
  --txt: #f0f0f5;
  --muted: #a0a0b0;
  --accent: #ff4d6d;
  --line: #26262f;
  --strip-h: 150px;
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0; height: 100%;
  background: var(--bg); color: var(--txt);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}
body { display: flex; flex-direction: column; height: 100vh; }

/* ===================== INTRO ===================== */
.intro {
  position: fixed; inset: 0; z-index: 100;
  display: flex; align-items: center; justify-content: center;
  background: radial-gradient(circle at 50% 40%, #1a1a24, #07070a 70%);
  transition: opacity .5s ease;
}
.intro.hide { opacity: 0; pointer-events: none; }
.intro-box { text-align: center; padding: 24px; }
.intro-title { font-size: 46px; font-weight: 800; letter-spacing: 1px; margin-bottom: 8px; }
.intro-sub { color: var(--muted); margin-bottom: 28px; font-size: 15px; }
.intro-btn {
  display: block; margin: 0 auto;
  background: linear-gradient(135deg, var(--accent), #c43159);
  color: #fff; border: none; border-radius: 999px;
  padding: 15px 30px; font-size: 17px; font-weight: 700; cursor: pointer;
  box-shadow: 0 10px 40px rgba(255,77,109,.35); transition: .15s;
}
.intro-btn:hover { transform: translateY(-2px); }
.intro-link {
  display: block; margin: 14px auto 0;
  background: none; border: none; color: var(--muted);
  font-size: 14px; cursor: pointer; text-decoration: underline;
}
.intro-link:hover { color: var(--txt); }

/* ===================== STAGE (carrusel principal) ===================== */
.stage {
  position: relative;
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
  background: #000;
}

.backdrop {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  filter: blur(40px) brightness(.35) saturate(1.2);
  transform: scale(1.15);
  transition: background-image .6s ease;
}

.hero {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  padding: 70px 70px 24px;
  perspective: 1400px;
}
.hero img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 20px 80px rgba(0,0,0,.7);
  -webkit-touch-callout: none;   /* sin menú nativo al mantener apretado */
  -webkit-user-select: none; user-select: none;
}
.card img { -webkit-touch-callout: none; -webkit-user-select: none; user-select: none; }

.toast {
  position: absolute; bottom: 54px; left: 50%; transform: translateX(-50%);
  z-index: 8;
  background: rgba(0,0,0,.8); color: #fff;
  padding: 9px 16px; border-radius: 999px; font-size: 13px;
  border: 1px solid var(--accent);
  opacity: 0; transition: opacity .25s; pointer-events: none;
}
.toast.show { opacity: 1; }

/* ---- Transiciones al azar (se aplica una clase por foto) ---- */
.fx-fade   { animation: kfFade   .9s ease both; }
.fx-zoomin { animation: kfZoomIn 1s  ease both; }
.fx-zoomout{ animation: kfZoomOut 1s ease both; }
.fx-left   { animation: kfLeft   .8s cubic-bezier(.22,.61,.36,1) both; }
.fx-right  { animation: kfRight  .8s cubic-bezier(.22,.61,.36,1) both; }
.fx-up     { animation: kfUp     .8s cubic-bezier(.22,.61,.36,1) both; }
.fx-down   { animation: kfDown   .8s cubic-bezier(.22,.61,.36,1) both; }
.fx-blur   { animation: kfBlur   .9s ease both; }
.fx-rotate { animation: kfRotate 1s  ease both; }

.fx-flip   { animation: kfFlip   .9s ease both; }
.fx-pop    { animation: kfPop    .8s cubic-bezier(.18,1.5,.4,1) both; }
.fx-swing  { animation: kfSwing  .9s ease both; transform-origin: top center; }
.fx-diag   { animation: kfDiag   .8s cubic-bezier(.22,.61,.36,1) both; }
.fx-glitch { animation: kfGlitch .7s steps(2,end) both; }
.fx-kenburns { animation: kfFade .9s ease both, kfKen 7s ease-out .9s both; }

@keyframes kfFade   { from { opacity: 0; } to { opacity: 1; } }
@keyframes kfZoomIn { from { opacity: 0; transform: scale(.85); } to { opacity: 1; transform: scale(1); } }
@keyframes kfZoomOut{ from { opacity: 0; transform: scale(1.18); } to { opacity: 1; transform: scale(1); } }
@keyframes kfLeft   { from { opacity: 0; transform: translateX(8%); } to { opacity: 1; transform: translateX(0); } }
@keyframes kfRight  { from { opacity: 0; transform: translateX(-8%); } to { opacity: 1; transform: translateX(0); } }
@keyframes kfUp     { from { opacity: 0; transform: translateY(8%); } to { opacity: 1; transform: translateY(0); } }
@keyframes kfDown   { from { opacity: 0; transform: translateY(-8%); } to { opacity: 1; transform: translateY(0); } }
@keyframes kfBlur   { from { opacity: 0; filter: blur(18px); } to { opacity: 1; filter: blur(0); } }
@keyframes kfRotate { from { opacity: 0; transform: rotate(-4deg) scale(.9); } to { opacity: 1; transform: rotate(0) scale(1); } }

/* --- divertidas --- */
@keyframes kfFlip {
  from { opacity: 0; transform: rotateY(85deg); }
  to   { opacity: 1; transform: rotateY(0); }
}
@keyframes kfPop {
  0%   { opacity: 0; transform: scale(.3); }
  100% { opacity: 1; transform: scale(1); }
}
@keyframes kfSwing {
  0%   { opacity: 0; transform: rotate(8deg); }
  60%  { transform: rotate(-4deg); }
  80%  { transform: rotate(2deg); }
  100% { opacity: 1; transform: rotate(0); }
}
@keyframes kfDiag {
  from { opacity: 0; transform: translate(-7%, 7%) scale(.92); }
  to   { opacity: 1; transform: translate(0,0) scale(1); }
}
@keyframes kfGlitch {
  0%   { opacity: 0; transform: translateX(-12px) skewX(8deg); filter: hue-rotate(60deg); }
  25%  { opacity: 1; transform: translateX(10px)  skewX(-6deg); }
  50%  { transform: translateX(-6px) skewX(4deg); filter: hue-rotate(-30deg); }
  75%  { transform: translateX(4px)  skewX(-2deg); }
  100% { opacity: 1; transform: translateX(0) skewX(0); filter: none; }
}
@keyframes kfKen {
  from { transform: scale(1); }
  to   { transform: scale(1.12); }
}

/* flechas de navegación */
.nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  z-index: 5;
  width: 54px; height: 54px;
  border: none; border-radius: 50%;
  background: rgba(255,255,255,.08);
  color: #fff; font-size: 32px; line-height: 1;
  cursor: pointer; transition: .15s; user-select: none;
}
.nav:hover { background: var(--accent); }
.nav.prev { left: 16px; }
.nav.next { right: 16px; }

/* barra superior: título + herramientas */
.topbar {
  position: absolute; top: 0; left: 0; right: 0; z-index: 6;
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; padding: 14px 18px;
  background: linear-gradient(rgba(0,0,0,.6), transparent);
}
.title {
  font-size: 18px; font-weight: 700; letter-spacing: .3px;
  text-shadow: 0 2px 8px rgba(0,0,0,.6);
  cursor: pointer; user-select: none;
}

/* dentro de un álbum: ocultar el carrusel de abajo (foto más grande) */
body.album-mode .strip { display: none; }
.tools { display: flex; gap: 8px; align-items: center; }
.speed {
  display: flex; align-items: center; gap: 4px;
  background: rgba(0,0,0,.35); border: 1px solid rgba(255,255,255,.15);
  border-radius: 999px; padding: 3px 6px;
}
.speed .tbtn { width: 30px; height: 30px; border: none; background: transparent; font-size: 18px; }
.speed .tbtn:hover { background: var(--accent); }
.speed-val { font-size: 13px; min-width: 38px; text-align: center; color: var(--txt); }
.tbtn {
  width: 40px; height: 40px;
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 50%;
  background: rgba(0,0,0,.35);
  color: #fff; font-size: 17px; cursor: pointer; transition: .15s;
}
.tbtn:hover { background: var(--accent); border-color: var(--accent); }
.tbtn.active { background: var(--accent); border-color: var(--accent); box-shadow: 0 0 0 3px rgba(255,77,109,.35); }

/* interruptor con texto (Azar / Orden) */
.tbtn.toggle {
  width: auto; border-radius: 999px;
  padding: 0 14px; height: 40px;
  font-size: 13px; font-weight: 700; white-space: nowrap;
}
.tbtn.toggle.active { background: var(--accent); border-color: var(--accent); color: #fff; }      /* Azar */
.tbtn.toggle:not(.active) { background: #2563eb; border-color: #2563eb; color: #fff; }            /* Orden */
.tbtn.toggle:not(.active):hover { background: #1d4ed8; border-color: #1d4ed8; }

.counter {
  position: absolute; bottom: 14px; left: 50%; transform: translateX(-50%);
  z-index: 6;
  font-size: 13px; color: #fff;
  background: rgba(0,0,0,.45);
  padding: 5px 12px; border-radius: 999px;
  text-shadow: 0 1px 4px rgba(0,0,0,.6);
}

/* ===================== STRIP (carrusel de álbumes) ===================== */
.strip {
  flex: 0 0 var(--strip-h);
  position: relative;
  background: var(--panel);
  border-top: 1px solid var(--line);
  display: flex; align-items: center;
}
.track {
  display: flex; gap: 10px;
  overflow-x: auto; overflow-y: hidden;
  padding: 14px 16px;
  scroll-behavior: smooth;
  width: 100%;
  scrollbar-width: thin; scrollbar-color: var(--line) transparent;
}
.track::-webkit-scrollbar { height: 7px; }
.track::-webkit-scrollbar-thumb { background: var(--line); border-radius: 999px; }

.card {
  position: relative;
  flex: 0 0 auto;
  width: 160px; height: calc(var(--strip-h) - 28px);
  border-radius: 10px;
  overflow: hidden;
  cursor: pointer;
  background: #000;
  border: 2px solid transparent;
  transition: transform .18s, border-color .18s;
}
.card:hover { transform: translateY(-3px); }
.card.active { border-color: var(--accent); }
.card img {
  width: 100%; height: 100%; object-fit: cover;
  opacity: .82; transition: opacity .2s, transform .35s;
}
.card:hover img { opacity: 1; transform: scale(1.06); }
.card .label {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 16px 9px 7px;
  background: linear-gradient(transparent, rgba(0,0,0,.85));
  font-size: 12.5px; font-weight: 600; line-height: 1.2;
}
.card .label .cnt { display: block; font-weight: 400; color: var(--muted); font-size: 11px; margin-top: 2px; }
.card.all { display: flex; align-items: center; justify-content: center; }
.card.all .allbox {
  text-align: center; font-size: 13px; font-weight: 700;
  background: linear-gradient(135deg, var(--accent), #b5305a);
  width: 100%; height: 100%;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px;
}
.card.all .allbox span { font-size: 24px; }

.strip-arrow {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 3;
  width: 36px; height: 36px; border: none; border-radius: 50%;
  background: rgba(0,0,0,.55); color: #fff; font-size: 22px; line-height: 1;
  cursor: pointer; transition: .15s;
}
.strip-arrow:hover { background: var(--accent); }
.strip-arrow.left { left: 6px; }
.strip-arrow.right { right: 6px; }

@media (max-width: 600px) {
  :root { --strip-h: 116px; }
  .topbar { flex-wrap: wrap; gap: 8px; padding: 10px 10px; }
  .title {
    order: -1; width: 100%; font-size: 14px;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  }
  .tools { width: 100%; gap: 6px; flex-wrap: wrap; justify-content: flex-start; }
  .hero { padding: 96px 44px 14px; }
  .nav { width: 40px; height: 40px; font-size: 22px; }
  .card { width: 118px; }
  .strip-arrow { display: none; }
  .tbtn { width: 38px; height: 38px; font-size: 15px; }
  .tbtn.toggle { height: 38px; padding: 0 12px; font-size: 12px; }
  .speed { padding: 2px 4px; }
  .speed .tbtn { width: 28px; height: 28px; font-size: 16px; }
  .speed-val { min-width: 34px; font-size: 12px; }
}