@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  --rxr-bg: #040a12;
  --rxr-bg-2: #07111d;
  --rxr-panel: rgba(11, 24, 38, 0.82);
  --rxr-panel-solid: #0b1826;
  --rxr-panel-2: rgba(16, 34, 52, 0.72);
  --rxr-line: rgba(125, 211, 252, 0.16);
  --rxr-line-strong: rgba(125, 211, 252, 0.34);
  --rxr-text: #eaf6ff;
  --rxr-muted: #8fb0c8;
  --rxr-dim: #64839a;
  --rxr-cyan: #22d3ee;
  --rxr-cyan-soft: #67e8f9;
  --rxr-blue: #3b82f6;
  --rxr-amber: #fbbf24;
  --rxr-emerald: #34d399;
  --rxr-violet: #a78bfa;
  --rxr-rose: #fb7185;
  --rxr-radius: 22px;
  --rxr-font: 'Manrope', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --rxr-mono: 'JetBrains Mono', 'DejaVu Sans Mono', monospace;
  --rxr-shadow: 0 24px 70px rgba(0, 0, 0, 0.42);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--rxr-text);
  background:
    radial-gradient(1000px 700px at 80% -10%, rgba(34, 211, 238, 0.14), transparent 62%),
    radial-gradient(900px 600px at 0% 60%, rgba(59, 130, 246, 0.10), transparent 65%),
    linear-gradient(180deg, #030810 0%, #06101b 55%, #040a12 100%);
  font-family: var(--rxr-font);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.45;
  background-image:
    linear-gradient(rgba(103, 232, 249, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(103, 232, 249, 0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(180deg, black, transparent 92%);
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
img { max-width: 100%; display: block; }
:focus-visible { outline: 2px solid var(--rxr-cyan); outline-offset: 3px; }
[hidden] { display: none !important; }

.rxr-shell { width: min(1220px, calc(100% - 40px)); margin: 0 auto; }
.rxr-topbar {
  position: sticky; top: 0; z-index: 40;
  border-bottom: 1px solid rgba(125, 211, 252, 0.12);
  background: rgba(3, 9, 16, 0.78);
  backdrop-filter: blur(18px);
}
.rxr-topbar-inner { min-height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.rxr-brand { display: flex; align-items: center; gap: 11px; min-width: max-content; }
.rxr-brand img { width: 38px; height: 38px; }
.rxr-brand strong { display: block; font-size: 0.95rem; letter-spacing: 0.01em; }
.rxr-brand span { display: block; font-family: var(--rxr-mono); font-size: 0.59rem; letter-spacing: 0.16em; color: var(--rxr-cyan); text-transform: uppercase; }
.rxr-top-meta { display: flex; align-items: center; gap: 8px; color: var(--rxr-muted); font-family: var(--rxr-mono); font-size: 0.66rem; letter-spacing: 0.08em; text-transform: uppercase; }
.rxr-live-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--rxr-emerald); box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.5); animation: rxrPulse 2s infinite; }
@keyframes rxrPulse { 0% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.45); } 70% { box-shadow: 0 0 0 9px rgba(52, 211, 153, 0); } 100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0); } }
.rxr-top-actions { display: flex; align-items: center; gap: 8px; }

.rxr-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  border: 1px solid transparent; border-radius: 13px;
  padding: 12px 18px; font-size: 0.86rem; font-weight: 800;
  transition: 0.2s ease; white-space: nowrap;
}
.rxr-btn-primary { background: linear-gradient(135deg, #22d3ee, #0ea5e9 55%, #2563eb); color: #02121a; box-shadow: 0 12px 34px rgba(34, 211, 238, 0.24); }
.rxr-btn-primary:hover { transform: translateY(-1px); box-shadow: 0 18px 44px rgba(34, 211, 238, 0.34); }
.rxr-btn-ghost { background: rgba(9, 22, 36, 0.7); border-color: var(--rxr-line); color: var(--rxr-text); }
.rxr-btn-ghost:hover { border-color: var(--rxr-line-strong); background: rgba(14, 34, 52, 0.8); }
.rxr-btn-soft { background: rgba(34, 211, 238, 0.1); border-color: rgba(34, 211, 238, 0.28); color: var(--rxr-cyan-soft); }
.rxr-btn:disabled { opacity: 0.42; cursor: not-allowed; transform: none; box-shadow: none; }
.rxr-btn-small { padding: 8px 12px; font-size: 0.74rem; border-radius: 10px; }

.rxr-eyebrow { display: inline-flex; align-items: center; gap: 8px; font-family: var(--rxr-mono); font-size: 0.62rem; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; color: var(--rxr-cyan); }
.rxr-eyebrow::before { content: ''; width: 18px; height: 1px; background: currentColor; opacity: 0.65; }
.rxr-muted { color: var(--rxr-muted); }
.rxr-mono { font-family: var(--rxr-mono); }
.rxr-chip { display: inline-flex; align-items: center; gap: 6px; padding: 5px 9px; border: 1px solid var(--rxr-line); border-radius: 999px; background: rgba(8, 22, 36, 0.66); font-family: var(--rxr-mono); font-size: 0.62rem; letter-spacing: 0.04em; color: var(--rxr-muted); }
.rxr-chip.is-cyan { color: var(--rxr-cyan-soft); border-color: rgba(34, 211, 238, 0.3); background: rgba(34, 211, 238, 0.08); }
.rxr-chip.is-amber { color: #fde68a; border-color: rgba(251, 191, 36, 0.3); background: rgba(251, 191, 36, 0.08); }
.rxr-chip.is-emerald { color: #a7f3d0; border-color: rgba(52, 211, 153, 0.3); background: rgba(52, 211, 153, 0.08); }

/* Landing */
.rxr-landing { position: relative; padding: 34px 0 60px; }
.rxr-landing::before {
  content: ''; position: absolute; inset: 0 0 auto; height: 560px; z-index: -1;
  background:
    linear-gradient(90deg, rgba(3, 9, 16, 0.97) 0%, rgba(3, 9, 16, 0.82) 48%, rgba(3, 9, 16, 0.55) 100%),
    linear-gradient(0deg, #040a12 0%, rgba(4, 10, 18, 0.4) 30%, transparent 70%),
    url('/assets/brand/vn/lobby-hero.webp') center 38% / cover no-repeat;
  opacity: 0.9;
}
.rxr-hero { display: grid; grid-template-columns: 1.08fr 0.92fr; gap: 34px; align-items: center; min-height: 520px; padding: 26px 0 10px; }
.rxr-hero > div, .rxr-start-card, .rxr-topics { animation: rxrFadeUp 0.55s ease both; }
.rxr-start-card { animation-delay: 0.08s; }
.rxr-topics { animation-delay: 0.14s; }
.rxr-hero h1 { margin: 12px 0 14px; font-size: clamp(2.5rem, 5vw, 4.7rem); line-height: 0.94; letter-spacing: -0.055em; font-weight: 800; }
.rxr-hero h1 em { font-style: normal; color: var(--rxr-cyan-soft); }
.rxr-hero p { max-width: 62ch; margin: 0 0 20px; color: #b8d4e6; font-size: 0.98rem; line-height: 1.6; }
.rxr-hero-badges { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 0; }
.rxr-start-card { position: relative; padding: 24px; border: 1px solid var(--rxr-line-strong); border-radius: 26px; background: linear-gradient(180deg, rgba(10, 25, 40, 0.94), rgba(6, 16, 27, 0.9)); box-shadow: var(--rxr-shadow); overflow: hidden; }
.rxr-start-card::before { content: ''; position: absolute; inset: 0; pointer-events: none; background: radial-gradient(500px 200px at 100% 0%, rgba(34, 211, 238, 0.18), transparent 65%); }
.rxr-start-card > * { position: relative; }
.rxr-start-card h2 { margin: 0 0 6px; font-size: 1.25rem; letter-spacing: -0.03em; }
.rxr-start-card p { margin: 0 0 18px; color: var(--rxr-muted); font-size: 0.86rem; }
.rxr-field { display: block; margin: 0 0 14px; }
.rxr-field > span { display: block; margin-bottom: 6px; font-family: var(--rxr-mono); font-size: 0.62rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--rxr-cyan); }
.rxr-input { width: 100%; border: 1px solid var(--rxr-line); border-radius: 12px; background: rgba(3, 11, 20, 0.78); color: var(--rxr-text); padding: 13px 14px; outline: none; transition: 0.2s ease; }
.rxr-input::placeholder { color: var(--rxr-dim); }
.rxr-input:focus { border-color: rgba(34, 211, 238, 0.55); box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.1); }
.rxr-start-note { margin-top: 12px; font-size: 0.72rem; color: var(--rxr-dim); }
.rxr-start-note strong { color: var(--rxr-muted); }
.rxr-station-preview { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; margin: 18px 0 4px; }
.rxr-station-preview span { height: 4px; border-radius: 999px; background: rgba(143, 176, 200, 0.18); }
.rxr-station-preview span:nth-child(-n+4) { background: linear-gradient(90deg, var(--rxr-cyan), var(--rxr-blue)); }
.rxr-preview-label { display: flex; justify-content: space-between; font-family: var(--rxr-mono); font-size: 0.6rem; color: var(--rxr-dim); }

.rxr-topics { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin-top: 30px; }
.rxr-topic { padding: 14px; border: 1px solid var(--rxr-line); border-radius: 16px; background: rgba(8, 21, 35, 0.7); }
.rxr-topic strong { display: block; font-size: 0.8rem; margin-bottom: 3px; }
.rxr-topic span { font-family: var(--rxr-mono); font-size: 0.58rem; color: var(--rxr-dim); text-transform: uppercase; letter-spacing: 0.06em; }

/* Quiz */
.rxr-quiz { padding: 24px 0 60px; }
.rxr-quiz-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 14px; }
.rxr-quiz-head h1 { margin: 6px 0 0; font-size: clamp(1.55rem, 3vw, 2.3rem); letter-spacing: -0.04em; }
.rxr-quiz-meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }
.rxr-progress-wrap { margin: 12px 0 22px; }
.rxr-progress { height: 8px; border-radius: 999px; background: rgba(143, 176, 200, 0.14); overflow: hidden; }
.rxr-progress span { display: block; height: 100%; width: 0%; border-radius: inherit; background: linear-gradient(90deg, var(--rxr-cyan), var(--rxr-blue)); transition: width 0.35s ease; }
.rxr-progress-labels { display: flex; justify-content: space-between; margin-top: 7px; font-family: var(--rxr-mono); font-size: 0.6rem; color: var(--rxr-dim); letter-spacing: 0.06em; text-transform: uppercase; }
.rxr-quiz-grid { display: grid; grid-template-columns: 0.92fr 1.08fr; gap: 18px; align-items: start; }
.rxr-visual, .rxr-question { border: 1px solid var(--rxr-line); border-radius: var(--rxr-radius); background: var(--rxr-panel); box-shadow: 0 18px 50px rgba(0, 0, 0, 0.24); backdrop-filter: blur(10px); }
.rxr-visual { min-height: 430px; padding: 18px; overflow: hidden; position: sticky; top: 92px; }
.rxr-question { padding: 24px; min-height: 430px; }
.rxr-question h2 { margin: 0 0 8px; font-size: clamp(1.25rem, 2.2vw, 1.7rem); letter-spacing: -0.035em; line-height: 1.18; }
.rxr-question .rxr-prompt { margin: 0 0 18px; color: #b9d5e7; font-size: 0.94rem; }
.rxr-question .rxr-sub { margin: -4px 0 16px; color: var(--rxr-muted); font-size: 0.82rem; }
.rxr-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 20px; }
.rxr-hint { margin-top: 10px; min-height: 18px; font-size: 0.76rem; color: var(--rxr-amber); }

.rxr-options { display: grid; gap: 9px; }
.rxr-options.two { grid-template-columns: 1fr 1fr; }
.rxr-options.three { grid-template-columns: repeat(3, 1fr); }
.rxr-option {
  display: flex; align-items: flex-start; gap: 10px; text-align: left;
  padding: 13px 14px; border: 1px solid var(--rxr-line); border-radius: 13px;
  background: rgba(4, 13, 23, 0.55); color: var(--rxr-text); font-size: 0.85rem;
  transition: 0.18s ease;
}
.rxr-option:hover { border-color: var(--rxr-line-strong); background: rgba(13, 32, 50, 0.7); }
.rxr-option[aria-pressed="true"] { border-color: rgba(34, 211, 238, 0.72); background: rgba(34, 211, 238, 0.13); box-shadow: inset 0 0 0 1px rgba(34, 211, 238, 0.28); }
.rxr-option .rxr-dot { flex: 0 0 auto; width: 16px; height: 16px; margin-top: 1px; border-radius: 50%; border: 1px solid var(--rxr-line-strong); display: grid; place-items: center; }
.rxr-option[aria-pressed="true"] .rxr-dot::after { content: ''; width: 8px; height: 8px; border-radius: 50%; background: var(--rxr-cyan); }
.rxr-option small { display: block; margin-top: 2px; color: var(--rxr-muted); font-size: 0.74rem; }
.rxr-option.is-selected { border-color: rgba(34, 211, 238, 0.72); background: rgba(34, 211, 238, 0.13); }
.rxr-option.is-compact { padding: 10px 12px; }

.rxr-num-wrap { display: flex; align-items: center; gap: 10px; max-width: 340px; }
.rxr-num-wrap .rxr-input { font-family: var(--rxr-mono); font-size: 1.2rem; }
.rxr-unit { font-family: var(--rxr-mono); font-size: 0.8rem; color: var(--rxr-cyan); }
.rxr-formula { margin-top: 12px; padding: 10px 12px; border: 1px dashed var(--rxr-line); border-radius: 10px; font-family: var(--rxr-mono); font-size: 0.72rem; color: var(--rxr-muted); }

.rxr-select { width: 100%; border: 1px solid var(--rxr-line); border-radius: 10px; background: rgba(3, 11, 20, 0.8); color: var(--rxr-text); padding: 10px 11px; outline: none; }
.rxr-select:focus { border-color: rgba(34, 211, 238, 0.55); }
.rxr-match { display: grid; gap: 8px; }
.rxr-match-row { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 10px; align-items: center; padding: 9px 10px; border: 1px solid var(--rxr-line); border-radius: 11px; background: rgba(4, 13, 23, 0.5); }
.rxr-match-row code { color: var(--rxr-cyan-soft); font-family: var(--rxr-mono); font-size: 0.76rem; }

.rxr-bank { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
.rxr-card-chip {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 9px 12px; border: 1px solid var(--rxr-line); border-radius: 11px;
  background: rgba(8, 23, 38, 0.82); color: var(--rxr-text); font-size: 0.8rem;
  transition: 0.16s ease; user-select: none;
}
.rxr-card-chip:hover { border-color: var(--rxr-line-strong); transform: translateY(-1px); }
.rxr-card-chip.is-selected { border-color: var(--rxr-amber); box-shadow: 0 0 0 2px rgba(251, 191, 36, 0.15); }
.rxr-card-chip.is-placed { opacity: 0.45; }
.rxr-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 6px; }
.rxr-column { min-height: 120px; padding: 10px; border: 1px dashed var(--rxr-line-strong); border-radius: 14px; background: rgba(4, 13, 23, 0.4); transition: 0.16s ease; }
.rxr-column.is-over { border-color: var(--rxr-amber); background: rgba(251, 191, 36, 0.06); }
.rxr-column h4 { margin: 0 0 8px; font-family: var(--rxr-mono); font-size: 0.64rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--rxr-cyan); }
.rxr-column .rxr-card-chip { width: 100%; margin-bottom: 6px; }
.rxr-column .rxr-empty { padding: 10px; color: var(--rxr-dim); font-size: 0.72rem; text-align: center; }

.rxr-pipe { display: grid; gap: 6px; margin-top: 12px; }
.rxr-pipe-slot { display: flex; align-items: center; gap: 10px; min-height: 42px; padding: 7px 10px; border: 1px dashed var(--rxr-line); border-radius: 10px; background: rgba(4, 13, 23, 0.45); color: var(--rxr-dim); font-size: 0.78rem; }
.rxr-pipe-slot.is-filled { border-style: solid; color: var(--rxr-text); background: rgba(13, 34, 52, 0.7); }
.rxr-pipe-num { font-family: var(--rxr-mono); font-size: 0.64rem; color: var(--rxr-cyan); width: 20px; }
.rxr-pipe-slot button { margin-left: auto; border: 0; background: transparent; color: var(--rxr-rose); font-size: 0.72rem; }
.rxr-reset { border: 0; background: transparent; color: var(--rxr-muted); font-size: 0.72rem; text-decoration: underline; text-underline-offset: 3px; }

.rxr-network { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 12px; }
.rxr-slot { min-height: 58px; padding: 8px; border: 1px dashed var(--rxr-line-strong); border-radius: 12px; background: rgba(4, 13, 23, 0.42); display: flex; flex-direction: column; justify-content: center; gap: 3px; transition: 0.16s ease; }
.rxr-slot.is-over { border-color: var(--rxr-amber); background: rgba(251, 191, 36, 0.06); }
.rxr-slot small { font-family: var(--rxr-mono); font-size: 0.54rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--rxr-dim); }
.rxr-slot .rxr-slot-value { font-size: 0.74rem; color: var(--rxr-text); }
.rxr-slot.is-filled { border-style: solid; background: rgba(13, 34, 52, 0.78); }
.rxr-slot.is-filled .rxr-slot-value { color: var(--rxr-cyan-soft); }

.rxr-feedback { margin-top: 16px; padding: 14px 15px; border-radius: 14px; border: 1px solid var(--rxr-line); background: rgba(8, 22, 36, 0.78); display: none; }
.rxr-feedback.is-visible { display: block; animation: rxrFadeUp 0.28s ease both; }
.rxr-feedback.is-correcto { border-color: rgba(52, 211, 153, 0.4); background: rgba(7, 36, 28, 0.72); }
.rxr-feedback.is-parcial { border-color: rgba(251, 191, 36, 0.4); background: rgba(42, 30, 5, 0.6); }
.rxr-feedback.is-incorrecto { border-color: rgba(251, 113, 133, 0.4); background: rgba(45, 12, 22, 0.6); }
.rxr-feedback strong { display: block; margin-bottom: 4px; font-size: 0.86rem; }
.rxr-feedback p { margin: 0; color: #c8deee; font-size: 0.82rem; }
.rxr-feedback .rxr-fb-score { float: right; font-family: var(--rxr-mono); font-size: 0.72rem; color: var(--rxr-cyan-soft); }
@keyframes rxrFadeUp { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* Visual panels */
.rxr-visual-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 12px; }
.rxr-visual-head span { font-family: var(--rxr-mono); font-size: 0.58rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--rxr-dim); }
.rxr-visual h3 { margin: 0 0 4px; font-size: 0.98rem; }
.rxr-visual p { margin: 0; color: var(--rxr-muted); font-size: 0.76rem; }
.rxr-svg { width: 100%; height: auto; display: block; margin-top: 10px; }
.rxr-cover { width: 100%; height: 170px; object-fit: cover; border-radius: 14px; border: 1px solid var(--rxr-line); }
.rxr-caption { margin-top: 10px; font-family: var(--rxr-mono); font-size: 0.6rem; color: var(--rxr-dim); }
.rxr-mini-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 10px; }
.rxr-mini-card { padding: 10px; border: 1px solid var(--rxr-line); border-radius: 12px; background: rgba(4, 13, 23, 0.5); }
.rxr-mini-card strong { display: block; font-size: 0.78rem; margin-bottom: 2px; }
.rxr-mini-card span { font-family: var(--rxr-mono); font-size: 0.58rem; color: var(--rxr-dim); }

/* Result */
.rxr-result { padding: 30px 0 70px; }
.rxr-result-hero { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 22px; align-items: stretch; }
.rxr-score-card { padding: 26px; border: 1px solid var(--rxr-line-strong); border-radius: 26px; background: var(--rxr-panel); box-shadow: var(--rxr-shadow); text-align: center; }
.rxr-score-ring { position: relative; width: 190px; height: 190px; margin: 10px auto 12px; }
.rxr-score-ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.rxr-score-ring .rxr-ring-bg { fill: none; stroke: rgba(143, 176, 200, 0.14); stroke-width: 10; }
.rxr-score-ring .rxr-ring-fg { fill: none; stroke: url(#rxrGrad); stroke-width: 10; stroke-linecap: round; transition: stroke-dashoffset 1s ease; }
.rxr-score-ring .rxr-score-value { position: absolute; inset: 0; display: grid; place-content: center; text-align: center; }
.rxr-score-ring strong { font-family: var(--rxr-mono); font-size: 2.8rem; line-height: 1; }
.rxr-score-ring span { font-family: var(--rxr-mono); font-size: 0.62rem; color: var(--rxr-muted); letter-spacing: 0.1em; text-transform: uppercase; }
.rxr-result-copy { padding: 26px; border: 1px solid var(--rxr-line); border-radius: 26px; background: var(--rxr-panel); }
.rxr-result-copy h1 { margin: 8px 0 8px; font-size: clamp(1.7rem, 3vw, 2.6rem); letter-spacing: -0.045em; line-height: 1.05; }
.rxr-result-copy p { color: #b9d5e7; font-size: 0.92rem; }
.rxr-topic-bars { display: grid; gap: 9px; margin-top: 18px; }
.rxr-topic-bar { display: grid; grid-template-columns: 130px 1fr 52px; gap: 10px; align-items: center; font-size: 0.76rem; }
.rxr-topic-bar span:first-child { color: var(--rxr-muted); }
.rxr-bar { height: 7px; border-radius: 999px; background: rgba(143, 176, 200, 0.14); overflow: hidden; }
.rxr-bar i { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--rxr-cyan), var(--rxr-blue)); }
.rxr-topic-bar b { font-family: var(--rxr-mono); font-size: 0.64rem; color: var(--rxr-cyan-soft); text-align: right; }
.rxr-next-card { margin-top: 18px; padding: 18px 20px; border: 1px solid rgba(251, 191, 36, 0.28); border-radius: 18px; background: rgba(42, 30, 5, 0.32); }
.rxr-next-card h3 { margin: 0 0 4px; font-size: 0.92rem; color: #fde68a; }
.rxr-next-card p { margin: 0; color: #e8d6a8; font-size: 0.82rem; }

.rxr-modal { position: fixed; inset: 0; z-index: 80; display: grid; place-items: center; padding: 20px; background: rgba(1, 5, 10, 0.72); backdrop-filter: blur(8px); }
.rxr-modal-card { width: min(560px, 100%); max-height: 88vh; overflow: auto; padding: 24px; border: 1px solid var(--rxr-line-strong); border-radius: 22px; background: var(--rxr-panel-solid); box-shadow: var(--rxr-shadow); }
.rxr-modal-card h2 { margin: 0 0 8px; }
.rxr-modal-card p, .rxr-modal-card li { color: var(--rxr-muted); font-size: 0.86rem; }
.rxr-modal-card ul { padding-left: 18px; }
.rxr-toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); z-index: 90; padding: 10px 16px; border: 1px solid var(--rxr-line-strong); border-radius: 999px; background: rgba(5, 17, 29, 0.94); color: var(--rxr-text); font-size: 0.78rem; box-shadow: var(--rxr-shadow); }
.rxr-footer { border-top: 1px solid rgba(125, 211, 252, 0.1); padding: 20px 0 30px; color: var(--rxr-dim); font-size: 0.7rem; }
.rxr-footer-inner { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

/* Panel docente */
.rxr-panel-page { padding: 30px 0 60px; }
.rxr-panel-head { display: flex; justify-content: space-between; gap: 18px; align-items: flex-end; flex-wrap: wrap; margin-bottom: 18px; }
.rxr-panel-head h1 { margin: 6px 0 0; font-size: clamp(1.8rem, 3vw, 2.6rem); letter-spacing: -0.045em; }
.rxr-panel-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 16px; }
.rxr-panel { padding: 18px; border: 1px solid var(--rxr-line); border-radius: 18px; background: var(--rxr-panel); }
.rxr-panel h2 { margin: 0 0 6px; font-size: 1rem; }
.rxr-panel p { margin: 0 0 12px; color: var(--rxr-muted); font-size: 0.78rem; }
.rxr-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 16px; }
.rxr-stat { padding: 14px; border: 1px solid var(--rxr-line); border-radius: 14px; background: rgba(8, 22, 36, 0.7); }
.rxr-stat strong { display: block; font-family: var(--rxr-mono); font-size: 1.55rem; color: var(--rxr-cyan-soft); }
.rxr-stat span { font-family: var(--rxr-mono); font-size: 0.56rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--rxr-dim); }
.rxr-table-wrap { overflow: auto; border: 1px solid var(--rxr-line); border-radius: 14px; }
.rxr-table { width: 100%; border-collapse: collapse; min-width: 720px; font-size: 0.76rem; }
.rxr-table th, .rxr-table td { padding: 9px 10px; border-bottom: 1px solid rgba(125, 211, 252, 0.1); text-align: left; vertical-align: top; }
.rxr-table th { background: rgba(8, 22, 36, 0.9); font-family: var(--rxr-mono); font-size: 0.56rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--rxr-dim); position: sticky; top: 0; }
.rxr-table tr:last-child td { border-bottom: 0; }
.rxr-table .rxr-score { font-family: var(--rxr-mono); color: var(--rxr-cyan-soft); }
.rxr-question-bars { display: grid; gap: 7px; margin-top: 8px; }
.rxr-qbar { display: grid; grid-template-columns: 34px 1fr 44px; gap: 8px; align-items: center; font-size: 0.7rem; }
.rxr-qbar span:first-child { font-family: var(--rxr-mono); color: var(--rxr-dim); }
.rxr-qbar b { font-family: var(--rxr-mono); font-size: 0.62rem; text-align: right; color: var(--rxr-muted); }
.rxr-link-box { display: flex; gap: 8px; align-items: center; margin-top: 8px; }
.rxr-link-box .rxr-input { font-family: var(--rxr-mono); font-size: 0.72rem; }
.rxr-qr { width: 120px; height: 120px; padding: 8px; border-radius: 12px; background: #fff; }
.rxr-admin-key { display: flex; gap: 8px; align-items: center; max-width: 520px; }
.rxr-empty-state { padding: 30px; text-align: center; color: var(--rxr-muted); }
.rxr-danger { color: var(--rxr-rose); background: transparent; border: 0; font-size: 0.72rem; }

@media (max-width: 980px) {
  .rxr-hero, .rxr-quiz-grid, .rxr-result-hero, .rxr-panel-grid { grid-template-columns: 1fr; }
  .rxr-visual { position: static; min-height: 300px; }
  .rxr-topics { grid-template-columns: repeat(2, 1fr); }
  .rxr-stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .rxr-shell { width: calc(100% - 28px); }
  .rxr-top-meta { display: none; }
  .rxr-hero { padding-top: 10px; min-height: auto; }
  .rxr-hero h1 { font-size: clamp(2.1rem, 11vw, 3.2rem); }
  .rxr-start-card, .rxr-question, .rxr-result-copy, .rxr-score-card { padding: 18px; }
  .rxr-question { min-height: auto; }
  .rxr-options.two, .rxr-options.three, .rxr-columns, .rxr-match-row, .rxr-network { grid-template-columns: 1fr; }
  .rxr-quiz-head { align-items: flex-start; flex-direction: column; }
  .rxr-quiz-meta { justify-content: flex-start; }
  .rxr-progress-labels { flex-direction: column; gap: 3px; }
  .rxr-progress-labels span:last-child { font-size: 0.56rem; }
  .rxr-topic-bar { grid-template-columns: 92px 1fr 44px; }
  .rxr-btn { width: 100%; }
  .rxr-actions .rxr-btn { width: auto; }
  .rxr-panel-head .rxr-btn { width: auto; }
  .rxr-start-card .rxr-btn { width: 100%; }
}
@media print {
  body { background: #fff; color: #102a43; }
  body::before, .rxr-topbar, .rxr-footer, .rxr-btn { display: none !important; }
  .rxr-score-card, .rxr-result-copy, .rxr-panel { background: #fff; border-color: #cbd5e1; box-shadow: none; color: #102a43; }
  .rxr-result-copy p, .rxr-next-card p, .rxr-start-note, .rxr-topic-bar span, .rxr-topic-bar b { color: #334155; }
  .rxr-score-ring .rxr-score-value strong { color: #102a43; }
  .rxr-next-card { background: #fff7e6; border-color: #f3d19b; }
}