/* =========================================================
   PRESENTACIÓN DINÁMICA — extiende css/styles.css
   Usa las mismas variables de color / tipografía del sitio.
   ========================================================= */

html,
body.deck-body {
  height: 100%;
  overflow: hidden;
}
body.deck-body {
  position: relative;
}

/* ---------- progress bar ---------- */
.progress-top {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 80;
  background: var(--line);
}
.progress-top i {
  display: block;
  height: 100%;
  width: 100%;
  background: var(--accent);
  transform-origin: left;
  transform: scaleX(0.142857);
  transition: transform 0.5s ease;
  box-shadow: 0 0 12px var(--accent-dim);
}

/* ---------- deck header ---------- */
.deck-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 70;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 32px 0;
}
.deck-header .logo {
  font-size: 1.3rem;
}
.deck-header .logo img {
  height: 28px;
}
.deck-counter {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 6px;
}
.deck-counter .cur {
  color: var(--text);
  font-weight: 500;
}
.deck-counter i {
  font-style: normal;
  color: var(--steel-dim);
}

/* ---------- dot navigation ---------- */
.dot-nav {
  position: fixed;
  right: 28px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 70;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 1px solid var(--steel-dim);
  background: transparent;
  cursor: pointer;
  padding: 0;
  position: relative;
  transition: all 0.25s ease;
}
.dot::after {
  content: attr(data-label);
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
  text-transform: uppercase;
}
.dot:hover::after {
  opacity: 1;
}
.dot:hover {
  border-color: var(--text);
}
.dot.active {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 10px var(--accent-dim);
}

/* ---------- deck / slides ---------- */
.deck {
  position: relative;
  height: 100vh;
  width: 100%;
}
.slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transform: translateY(48px);
  transition:
    opacity 0.6s cubic-bezier(0.22, 0.68, 0.36, 1),
    transform 0.6s cubic-bezier(0.22, 0.68, 0.36, 1);
  z-index: 1;
}
.slide.prev-slide {
  transform: translateY(-48px);
}
.slide.next-slide {
  transform: translateY(48px);
}
.slide.active {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
  z-index: 2;
}

.slide-inner {
  width: 100%;
  max-height: 88vh;
  overflow-y: auto;
  padding-top: 100px;
  padding-bottom: 60px;
  scrollbar-width: thin;
  scrollbar-color: var(--steel-dim) transparent;
}
.slide-inner::-webkit-scrollbar {
  width: 4px;
}
.slide-inner::-webkit-scrollbar-track {
  background: transparent;
}
.slide-inner::-webkit-scrollbar-thumb {
  background: var(--steel-dim);
  border-radius: 2px;
}
.slide-inner::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

.slide .section-head {
  margin-bottom: 44px;
}
.slide .section-head.center-head {
  justify-content: center;
  text-align: center;
}
.slide .section-head.center-head h2 {
  max-width: none;
}

/* ---------- cover slide ---------- */
.cover-mark {
  position: absolute;
  top: 50%;
  right: -6%;
  transform: translateY(-50%);
  width: 56vw;
  max-width: 760px;
  opacity: 0.045;
  pointer-events: none;
  z-index: 0;
}
.cover-mark img {
  width: 100%;
  display: block;
  filter: brightness(0) invert(1);
}
.cover-inner {
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}
.cover-inner h1 {
  font-size: clamp(2.2rem, 5.2vw, 4rem);
}
.cover-inner .lead {
  margin: 24px auto 0;
  max-width: 560px;
}
.cover-inner .eyebrow {
  justify-content: center;
}
.cover-inner .eyebrow::before {
  display: none;
}

.scroll-hint {
  margin-top: 64px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.scroll-hint i {
  font-style: normal;
  color: var(--accent);
  animation: bob 1.8s ease-in-out infinite;
}
@keyframes bob {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(6px);
  }
}

/* ---------- pain cards ---------- */
.pain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.pain-card {
  background: var(--panel);
  padding: 32px 28px;
}
.pain-num {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.08em;
}
.pain-card h3 {
  font-family: var(--display);
  font-size: 1.4rem;
  text-transform: uppercase;
  font-weight: 600;
  margin: 14px 0 10px;
}
.pain-card p {
  color: var(--text-dim);
  font-size: 0.88rem;
  font-weight: 300;
  line-height: 1.6;
}

/* ---------- compact rack / process (reused, tightened) ---------- */
.rack.compact .rack-row {
  padding: 18px 26px;
}
.process.compact .proc-step {
  padding: 26px 20px;
  min-height: 190px;
}
.mini-badge {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border: 1px solid var(--accent);
  padding: 3px 8px;
  margin-left: 8px;
  vertical-align: middle;
}

/* ---------- stats slide ---------- */
.stats-grid {
  display: flex;
  justify-content: center;
  gap: 64px;
  flex-wrap: wrap;
  margin-top: 20px;
}
.stats-grid .stat {
  text-align: center;
}
.stats-grid .stat b {
  font-size: 2.6rem;
}
.stats-grid .stat span {
  max-width: 160px;
  display: block;
  margin-top: 6px;
}

/* ---------- comparison slide ---------- */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.compare-col {
  background: var(--panel);
  padding: 32px 34px;
}
.compare-head {
  font-family: var(--mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding-bottom: 16px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--line);
}
.compare-head.off {
  color: var(--steel-dim);
}
.compare-head.on {
  color: var(--accent);
}
.compare-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.compare-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--text-dim);
  line-height: 1.5;
}
.mark {
  font-style: normal;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  border-radius: 50%;
  margin-top: 1px;
}
.mark.x {
  color: var(--steel-dim);
  border: 1px solid var(--steel-dim);
}
.mark.ok {
  color: var(--text);
  background: var(--led);
}

/* ---------- close slide ---------- */
.close-h2 {
  font-family: var(--display);
  font-size: clamp(2.1rem, 4.6vw, 3.4rem);
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: -0.01em;
  max-width: 760px;
  margin: 20px auto 0;
}
.close-logo {
  margin-top: 56px;
  opacity: 0.8;
}
.close-logo img {
  height: 30px;
  margin: 0 auto;
}

/* ---------- next chevron ---------- */
.chevron-next {
  position: fixed;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  z-index: 70;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--steel-dim);
  background: rgba(0, 0, 0, 0.3);
  color: var(--text-dim);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  transition: all 0.25s ease;
}
.chevron-next:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 16px var(--accent-dim);
}
.chevron-next.hide {
  opacity: 0;
  pointer-events: none;
}

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .pain-grid {
    grid-template-columns: 1fr;
  }
  .compare-grid {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    gap: 38px;
  }
  .dot-nav {
    right: 14px;
    gap: 12px;
  }
  .dot::after {
    display: none;
  }
  .cover-mark {
    width: 90vw;
    right: -20%;
    opacity: 0.035;
  }
  .slide-inner {
    padding-top: 88px;
    padding-bottom: 50px;
    max-height: 90vh;
  }
  .deck-header {
    padding: 16px 20px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .slide,
  .dot,
  .progress-top i {
    transition-duration: 0.01ms !important;
  }
}