:root {
  --bg: #0d1117;
  --bg-raised: #131a24;
  --bg-inset: #090c10;
  --border: #22303f;
  --fg: #d6e2ef;
  --fg-dim: #7c8ba1;
  --accent: #39ff8f;
  --accent-dim: #1f7a4d;
  --prompt: #39ff8f;
  --danger: #ff5f6d;
  --warn: #ffcc66;

  --opt-a-bg: #b8213e;
  --opt-a-fg: #ffe3e8;
  --opt-b-bg: #1f6feb;
  --opt-b-fg: #e3f0ff;
  --opt-c-bg: #b8860b;
  --opt-c-fg: #fff6df;
  --opt-d-bg: #1f9d55;
  --opt-d-fg: #e2ffef;

  --mono: 'Cascadia Mono', 'Consolas', 'SFMono-Regular', 'Menlo', 'Liberation Mono', monospace;
  --radius: 10px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--mono);
  min-height: 100vh;
}

body {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 28px 28px;
}

a { color: var(--accent); }

h1, h2, h3 { line-height: 1.15; margin: 0 0 0.5em; }

.term-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-size: 0.8rem;
  color: var(--fg-dim);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.term-tag::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

.prompt::before {
  content: '$ ';
  color: var(--prompt);
}

.card {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.btn {
  font-family: var(--mono);
  font-size: 1rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--accent-dim);
  background: var(--bg-inset);
  color: var(--accent);
  cursor: pointer;
  transition: transform 0.1s ease, box-shadow 0.15s ease;
}
.btn:hover:not(:disabled) { box-shadow: 0 0 0 2px var(--accent-dim); transform: translateY(-1px); }
.btn:active:not(:disabled) { transform: translateY(0); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-primary { background: var(--accent); color: #04140b; border-color: var(--accent); font-weight: 700; }

.option-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
@media (max-width: 640px) {
  .option-grid { grid-template-columns: 1fr; }
}

.option-btn {
  font-family: var(--mono);
  font-size: 1.15rem;
  font-weight: 700;
  padding: 1.5rem 1rem;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-height: 4.5rem;
  transition: transform 0.1s ease, filter 0.15s ease;
}
.option-btn:hover:not(:disabled) { filter: brightness(1.08); }
.option-btn:active:not(:disabled) { transform: scale(0.98); }
.option-btn:disabled { opacity: 0.55; cursor: not-allowed; }
.option-btn .glyph {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  flex-shrink: 0;
}
.option-a { background: var(--opt-a-bg); color: var(--opt-a-fg); }
.option-b { background: var(--opt-b-bg); color: var(--opt-b-fg); }
.option-c { background: var(--opt-c-bg); color: var(--opt-c-fg); }
.option-d { background: var(--opt-d-bg); color: var(--opt-d-fg); }
.option-btn.correct { outline: 4px solid var(--accent); }
.option-btn.wrong { outline: 4px solid var(--danger); opacity: 0.6; }

.countdown {
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}
.countdown.warn { color: var(--warn); }
.countdown.danger { color: var(--danger); }

.progress-track {
  width: 100%;
  height: 10px;
  background: var(--bg-inset);
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid var(--border);
}
.progress-fill {
  height: 100%;
  background: var(--accent);
  transition: width 1s linear;
}

.leaderboard-row {
  display: flex;
  justify-content: space-between;
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--border);
  font-size: 1.05rem;
}
.leaderboard-row:first-child { color: var(--accent); font-weight: 700; }

.pill {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  background: var(--bg-inset);
  border: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--fg-dim);
}

.status-banner {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-inset);
}
.status-banner.error { border-color: var(--danger); color: var(--danger); }
.status-banner.ok { border-color: var(--accent); color: var(--accent); }

select, input[type=text] {
  font-family: var(--mono);
  font-size: 1rem;
  padding: 0.6rem 0.8rem;
  background: var(--bg-inset);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

::selection { background: var(--accent-dim); color: #04140b; }

/* Slide deck */
.deck-chrome {
  position: fixed;
  top: 0; left: 0; right: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1.25rem;
  z-index: 20;
  pointer-events: none;
}
.deck-chrome > * { pointer-events: auto; }
.slide {
  display: none;
  min-height: 100vh;
  padding: 6rem 4rem 4rem;
  max-width: 1100px;
  margin: 0 auto;
  flex-direction: column;
  justify-content: center;
}
.slide.active { display: flex; }
.slide h1 { font-size: 2.4rem; }
.slide h2.kicker { color: var(--fg-dim); font-size: 1rem; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 1rem; }
.slide ul, .slide ol { font-size: 1.15rem; line-height: 1.7; }
.slide table { width: 100%; border-collapse: collapse; font-size: 1rem; }
.slide th, .slide td { text-align: left; padding: 0.5rem 0.75rem; border-bottom: 1px solid var(--border); }
.slide th { color: var(--accent); }
.slide code { background: var(--bg-inset); padding: 0.15em 0.4em; border-radius: 4px; }
.slide pre { background: var(--bg-inset); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem; overflow-x: auto; }
@media (max-width: 800px) {
  .slide { padding: 5rem 1.5rem 2rem; }
  .slide h1 { font-size: 1.7rem; }
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
@media (max-width: 900px) {
  .cards-grid { grid-template-columns: 1fr; }
}
.info-card {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
}
.info-card h3 {
  margin: 0 0 0.4rem;
  color: var(--accent);
  font-size: 1.05rem;
}
.info-card p { margin: 0 0 0.5rem; font-size: 0.95rem; }
.info-card .examples { font-size: 0.85rem; color: var(--fg-dim); }
.info-card.obligatoria { border-color: var(--accent-dim); }
.info-card.opcional { border-style: dashed; }

.hook-row {
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem 1.1rem;
  cursor: pointer;
  margin-bottom: 0.6rem;
}
.hook-row .hook-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1.02rem;
}
.hook-row .hook-head .toggle-hint { color: var(--fg-dim); font-size: 0.8rem; }
.hook-row .hook-code {
  display: none;
  margin-top: 0.75rem;
  max-height: 260px;
  overflow-y: auto;
  font-size: 0.78rem;
}
.hook-row.open .hook-code { display: block; }
.hook-row.open .toggle-hint::before { content: '▲ ocultar código'; }
.hook-row:not(.open) .toggle-hint::before { content: '▼ ver código'; }

.notes-panel {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--bg-raised);
  border-top: 1px solid var(--border);
  padding: 1rem 2rem;
  z-index: 25;
}

.stack { display: flex; flex-direction: column; gap: 1rem; }
.row { display: flex; align-items: center; gap: 1rem; }
.center { display: flex; align-items: center; justify-content: center; }
.text-dim { color: var(--fg-dim); }
.text-center { text-align: center; }
.hidden { display: none !important; }

/* Calidad de servicio: tres beneficios + ciclo de gaps */
.info-card .benefit-sw {
  margin-top: 0.8rem;
  padding-top: 0.6rem;
  border-top: 1px solid var(--border);
}
.gap-cycle {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 1.5rem;
  align-items: center;
}
@media (max-width: 900px) {
  .gap-cycle { grid-template-columns: 1fr; }
}
.gap-svg { width: 100%; max-width: 480px; height: auto; margin: 0 auto; display: block; }
.gap-svg .gap-arc { fill: none; stroke: var(--fg-dim); stroke-width: 2.5; }
.gap-svg .gap-center { fill: var(--fg); font-size: 22px; font-weight: 700; }
.gap-svg .gap-center-sub { fill: var(--fg-dim); font-size: 12px; }
.gap-svg .gap-node, .gap-svg .gap-badge { cursor: pointer; outline: none; }
.gap-svg text { font-family: "Segoe UI", system-ui, sans-serif; }
.gap-svg .gap-node text { fill: #0d1117; font-size: 13.5px; font-weight: 600; pointer-events: none; }
.gap-svg .gap-node circle { stroke: var(--bg); stroke-width: 3; transition: stroke 0.15s; }
.gap-svg .gap-node.start circle { stroke: var(--fg); stroke-width: 5; }
.gap-svg .gap-badge circle { fill: var(--bg-inset); stroke: var(--fg-dim); stroke-width: 2; transition: stroke 0.15s, fill 0.15s; }
.gap-svg .gap-badge text { fill: var(--fg); font-size: 11px; font-weight: 700; pointer-events: none; }
.gap-svg .gap-badge.key circle { stroke: var(--danger); stroke-width: 3; }
.gap-svg .gap-badge.key text { fill: var(--danger); }
.gap-svg .gap-node:hover circle, .gap-svg .gap-node:focus-visible circle,
.gap-svg .gap-node.selected circle { stroke: var(--accent); stroke-width: 5; }
.gap-svg .gap-badge:hover circle, .gap-svg .gap-badge:focus-visible circle,
.gap-svg .gap-badge.selected circle { stroke: var(--accent); fill: var(--bg-raised); }
.gap-panel {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
  min-height: 220px;
}
.gap-detail { display: none; }
.gap-detail.active { display: block; }
.gap-detail h3 { margin: 0 0 0.6rem; font-size: 1.2rem; }
.gap-detail p { font-size: 1.05rem; line-height: 1.55; margin: 0 0 0.6rem; }
.gap-detail .gap-tag {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.gap-detail.key .gap-tag, .gap-detail.key h3 { color: var(--danger); }
.key-card { border-left: 4px solid var(--danger); }
.slide tr.key-row td { color: var(--danger); font-weight: 600; }

/* Host: panel de respuestas por jugador */
.review-panel { margin-top: 2rem; }
.review-panel summary { cursor: pointer; font-weight: 700; }
.review-head, .review-row {
  display: grid;
  grid-template-columns: 1fr 7rem 7rem;
  gap: 0.75rem;
  padding: 0.5rem 0.75rem;
}
.review-head { margin-top: 1rem; color: var(--fg-dim); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; }
.review-head span:not(:first-child), .review-row span:not(:first-child) { text-align: right; }
.review-row {
  width: 100%;
  background: none;
  border: 0;
  border-top: 1px solid var(--border);
  color: var(--fg);
  font: inherit;
  text-align: left;
  cursor: pointer;
}
.review-row:hover, .review-player.open .review-row { background: var(--bg-inset); }
.review-row:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }
.review-answers { display: none; margin: 0; padding: 0.5rem 0.75rem 1rem; list-style: none; }
.review-player.open .review-answers { display: block; }
.review-answer { padding: 0.5rem 0.75rem; border-left: 3px solid var(--border); margin-bottom: 0.4rem; font-size: 0.9rem; line-height: 1.5; }
.review-answer.right { border-left-color: var(--accent); }
.review-answer.wrong { border-left-color: var(--danger); }
.review-answer.right .review-mark { color: var(--accent); }
.review-answer.wrong .review-mark { color: var(--danger); }
.review-answer.skipped .review-mark { color: var(--fg-dim); }