/* ==========================================================================
   Presentación Capital 40 — deck web nativo
   Técnica: lienzo fijo 1280×720 escalado con transform para fidelidad +
   responsividad. Fiel al diseño Canva (ver assets/docs/presentation-description.md)
   ========================================================================== */

:root {
  /* Tokens exactos del deck (presentation-description.md) */
  --deck-bg: #07091b;
  --deck-grad-from: #4585e4;
  --deck-grad-to: #01d3b6;
  --deck-teal: #00d4b5;
  --deck-white: #ffffff;
  --deck-muted: #b8c1e0;

  --deck-w: 1280px;
  --deck-h: 720px;
  --deck-scale: 1;
  --deck-rotate: 0deg;
}

/* Página dedicada: sin scroll, fondo profundo */
body.deck-body {
  margin: 0;
  background: #04050f;
  overflow: hidden;
  font-family: "Nunito", -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ====== Viewport que centra el escenario ====== */
.deck-viewport {
  position: fixed;
  inset: 0;
  overflow: hidden;
}

/* ====== Escenario de diseño fijo (se escala con JS) ======
   Se centra con left/top 50% + translate(-50%,-50%) para que el
   centrado sea correcto sin importar el tamaño escalado. */
.deck-stage {
  position: absolute;
  left: 50%;
  top: 50%;
  width: var(--deck-w);
  height: var(--deck-h);
  transform: translate(-50%, -50%) rotate(var(--deck-rotate)) scale(var(--deck-scale));
  transform-origin: center center;
  background: var(--deck-bg);
  overflow: hidden;
  box-shadow: 0 40px 140px rgba(0, 0, 0, 0.6);
  border-radius: 6px;
}

/* ====== Slides ====== */
.slide {
  position: absolute;
  inset: 0;
  padding: 64px 72px;
  box-sizing: border-box;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  transform: translateX(40px) scale(0.99);
  background: var(--deck-bg);
}
.slide.is-active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(0) scale(1);
  z-index: 2;
}
.slide.is-leaving {
  opacity: 0;
  transform: translateX(-40px) scale(0.99);
  z-index: 1;
}

/* ====== Tipografía del deck ====== */
.deck-title {
  font-family: "Playfair Display", Georgia, serif;
  font-style: italic;
  font-weight: 700;
  line-height: 1.04;
  margin: 0;
  background: linear-gradient(
    90deg,
    var(--deck-grad-from) 0%,
    var(--deck-grad-to) 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.deck-eyebrow {
  font-family: "Nunito", sans-serif;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--deck-teal);
  margin: 0;
}
.deck-body-text {
  font-family: "Nunito", sans-serif;
  font-weight: 400;
  color: var(--deck-white);
  line-height: 1.5;
  margin: 0;
}
.deck-body-text strong {
  font-weight: 800;
}
.deck-body-text a,
.slide a.deck-link {
  color: var(--deck-teal);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* Barras decorativas de acento (teal) */
.deck-bar {
  position: absolute;
  background: var(--deck-teal);
}
.deck-bar--bottom {
  left: 0;
  bottom: 0;
  width: 100%;
  height: 12px;
}
.deck-bar--right {
  top: 0;
  right: 0;
  width: 14px;
  height: 100%;
}

/* ====== Utilidades de animación (disparadas por JS al activar slide) ====== */
[data-anim] {
  opacity: 0;
  will-change: transform, opacity;
}
.slide.is-active [data-anim] {
  animation-duration: 0.7s;
  animation-timing-function: cubic-bezier(0.16, 1, 0.3, 1);
  animation-fill-mode: forwards;
}
.slide.is-active [data-anim="fade-up"] {
  animation-name: deckFadeUp;
}
.slide.is-active [data-anim="fade"] {
  animation-name: deckFade;
}
.slide.is-active [data-anim="fade-left"] {
  animation-name: deckFadeLeft;
}
.slide.is-active [data-anim="zoom"] {
  animation-name: deckZoom;
}

@keyframes deckFadeUp {
  from { opacity: 0; transform: translateY(34px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes deckFade {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes deckFadeLeft {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes deckZoom {
  from { opacity: 0; transform: scale(0.86); }
  to { opacity: 1; transform: scale(1); }
}

/* SVG que se dibuja (curvas/barras) */
.deck-draw {
  stroke-dasharray: var(--len, 1);
  stroke-dashoffset: var(--len, 1);
}
.slide.is-active .deck-draw {
  animation: deckDraw 1.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  animation-delay: 0.3s;
}
@keyframes deckDraw {
  to { stroke-dashoffset: 0; }
}

/* ====== Controles (discretos: tenues en reposo, se realzan al interactuar) ====== */
.deck-controls {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 6px 10px;
  border-radius: 100px;
  background: transparent;
  border: 1px solid transparent;
  backdrop-filter: none;
  z-index: 30;
  opacity: 0.4;
  transition: opacity 0.3s ease, background 0.3s ease, border-color 0.3s ease,
    backdrop-filter 0.3s ease;
}
.deck-controls:hover,
.deck-controls:focus-within {
  opacity: 1;
  background: rgba(14, 19, 48, 0.7);
  border-color: rgba(184, 193, 224, 0.14);
  backdrop-filter: blur(10px);
}
.deck-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid transparent;
  background: transparent;
  color: var(--deck-muted);
  font-size: 14px;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s, opacity 0.2s;
}
.deck-controls:hover .deck-btn,
.deck-controls:focus-within .deck-btn {
  color: var(--deck-white);
}
.deck-btn:hover {
  background: rgba(74, 127, 232, 0.18);
  border-color: var(--deck-teal);
  color: var(--deck-white);
}
.deck-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}
.deck-counter {
  font-family: "Space Grotesk", "Nunito", monospace;
  font-weight: 600;
  font-size: 13px;
  color: var(--deck-muted);
  min-width: 48px;
  text-align: center;
}
.deck-counter b {
  color: var(--deck-white);
}

.deck-dots {
  display: flex;
  gap: 8px;
}
.deck-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  border: none;
  padding: 0;
  background: rgba(184, 193, 224, 0.28);
  cursor: pointer;
  transition: background 0.2s, transform 0.2s, width 0.2s;
}
.deck-dot[aria-current="true"] {
  background: var(--deck-teal);
  width: 20px;
  border-radius: 100px;
}

/* Barra de progreso superior */
.deck-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(
    90deg,
    var(--deck-grad-from),
    var(--deck-grad-to)
  );
  z-index: 40;
  transition: width 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Botón "Volver al inicio" flotante */
.deck-back {
  position: fixed;
  top: 18px;
  left: 18px;
  z-index: 40;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 100px;
  background: rgba(14, 19, 48, 0.78);
  border: 1px solid rgba(184, 193, 224, 0.18);
  backdrop-filter: blur(10px);
  color: var(--deck-muted);
  font-family: "Nunito", sans-serif;
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
  transition: color 0.2s, border-color 0.2s;
}
.deck-back:hover {
  color: var(--deck-white);
  border-color: var(--deck-teal);
}

/* Hint de swipe (solo móvil) */
.deck-hint {
  position: fixed;
  bottom: 86px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 30;
  font-family: "Nunito", sans-serif;
  font-size: 13px;
  color: var(--deck-muted);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s;
}
.deck-hint.is-visible {
  opacity: 0.85;
}

@media (prefers-reduced-motion: reduce) {
  .slide,
  .slide.is-active [data-anim],
  .slide.is-active .deck-draw,
  .deck-progress {
    transition: none !important;
    animation: none !important;
  }
  [data-anim] { opacity: 1 !important; }
  .deck-draw { stroke-dashoffset: 0 !important; }
}