/* =========================================================
   PLATEFORME DE RÉVISION MÉDICALE — Stylesheet futuriste v2
   Dark mode · Glassmorphism · Néon · Mesh gradients
   ========================================================= */

:root {
  /* Background layers (deep space) */
  --bg-0: #05060d;
  --bg-1: #0a0d1c;
  --bg-2: #0f1428;

  /* Glass surfaces */
  --glass: rgba(255, 255, 255, 0.04);
  --glass-strong: rgba(255, 255, 255, 0.07);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-border-strong: rgba(255, 255, 255, 0.16);

  /* Text */
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --text-soft: #64748b;
  --text-dim: #475569;

  /* Neon primary palette (electric cyan → violet) */
  --neon-cyan: #00e5ff;
  --neon-blue: #5b8cff;
  --neon-violet: #a855f7;
  --neon-pink: #ec4899;
  --neon-magenta: #f472b6;

  --primary: #5b8cff;
  --primary-glow: #00e5ff;

  /* Semantic */
  --good: #10ffb4;
  --good-glow: rgba(16, 255, 180, 0.45);
  --good-soft: rgba(16, 255, 180, 0.12);
  --bad: #ff4d6d;
  --bad-glow: rgba(255, 77, 109, 0.45);
  --bad-soft: rgba(255, 77, 109, 0.13);
  --warn: #ffb547;
  --warn-soft: rgba(255, 181, 71, 0.14);

  /* Gradients */
  --grad-primary: linear-gradient(135deg, #00e5ff 0%, #5b8cff 45%, #a855f7 100%);
  --grad-success: linear-gradient(135deg, #10ffb4 0%, #00e5ff 100%);
  --grad-error:   linear-gradient(135deg, #ff4d6d 0%, #a855f7 100%);
  --grad-pink:    linear-gradient(135deg, #ec4899 0%, #a855f7 100%);

  /* Shadows / glows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.45), 0 4px 16px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4), 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 32px 80px rgba(0, 0, 0, 0.55);
  --glow-cyan:   0 0 32px rgba(0, 229, 255, 0.35);
  --glow-violet: 0 0 32px rgba(168, 85, 247, 0.35);
  --glow-pink:   0 0 32px rgba(236, 72, 153, 0.35);

  /* Radius */
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 22px;
  --radius-xl: 32px;
  --radius-full: 999px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  background: var(--bg-0);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.55;
  font-feature-settings: 'cv11', 'ss01';
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* =========================================================
   GLOBAL MESH GRADIENT BACKGROUND
   ========================================================= */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(circle at 12% 18%, rgba(0, 229, 255, 0.18) 0%, transparent 38%),
    radial-gradient(circle at 88% 12%, rgba(168, 85, 247, 0.22) 0%, transparent 42%),
    radial-gradient(circle at 80% 88%, rgba(236, 72, 153, 0.16) 0%, transparent 38%),
    radial-gradient(circle at 18% 85%, rgba(91, 140, 255, 0.18) 0%, transparent 42%),
    linear-gradient(160deg, var(--bg-0) 0%, var(--bg-1) 50%, var(--bg-0) 100%);
  pointer-events: none;
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    radial-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 3px 3px;
  pointer-events: none;
  opacity: 0.4;
}

button { font-family: inherit; cursor: pointer; }

/* Screen system */
.screen { display: none; min-height: 100vh; position: relative; }
.screen.active { display: block; animation: fadeUp 380ms cubic-bezier(.22,.61,.36,1) both; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Container */
.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 56px 24px 96px;
  position: relative;
}
.container-narrow { max-width: 820px; }

/* =========================================================
   HOMEPAGE — split grid
   ========================================================= */

.home-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  min-height: 100vh;
  gap: 0;
}

.home-left {
  padding: 64px clamp(28px, 4vw, 72px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 760px;
}

.home-right {
  position: relative;
  overflow: hidden;
  padding: 0;
  background:
    radial-gradient(circle at 50% 50%, rgba(0, 229, 255, 0.12) 0%, transparent 55%),
    radial-gradient(circle at 30% 70%, rgba(236, 72, 153, 0.10) 0%, transparent 50%),
    radial-gradient(circle at 70% 30%, rgba(168, 85, 247, 0.15) 0%, transparent 55%);
}
.home-right::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--bg-0) 0%, transparent 18%, transparent 100%);
  z-index: 3;
  pointer-events: none;
}

.hero-image-wrap {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  overflow: visible;
  animation: floatGlow 8s ease-in-out infinite;
}

/* Wide soft halo behind the spine — cyan + violet, blurred deep */
.hero-image-wrap::before {
  content: "";
  position: absolute;
  top: -5%;
  right: -15%;
  bottom: -5%;
  width: 95%;
  background:
    radial-gradient(circle at 55% 50%, rgba(0, 229, 255, 0.45) 0%, transparent 50%),
    radial-gradient(circle at 60% 35%, rgba(168, 85, 247, 0.32) 0%, transparent 60%),
    radial-gradient(circle at 50% 70%, rgba(236, 72, 153, 0.15) 0%, transparent 55%);
  filter: blur(55px);
  z-index: 0;
  pointer-events: none;
}

.hero-image {
  position: relative;
  z-index: 1;
  height: 118%;
  width: auto;
  max-width: none;
  display: block;
  transform: translateX(14%);
  mix-blend-mode: screen;
  filter:
    drop-shadow(0 0 30px rgba(0, 229, 255, 0.55))
    drop-shadow(0 0 80px rgba(168, 85, 247, 0.35))
    saturate(1.08);
  -webkit-mask-image: linear-gradient(to right, transparent 0%, #000 28%, #000 100%);
  mask-image: linear-gradient(to right, transparent 0%, #000 28%, #000 100%);
}

/* Violet color tint sitting on top of the spine — pulls the cyan image
   toward the site's purple palette and removes the "stuck-on photo" feel. */
.hero-image-wrap::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 30%;
  background:
    radial-gradient(ellipse 70% 60% at 55% 50%, rgba(168, 85, 247, 0.4), transparent 70%),
    radial-gradient(ellipse 40% 30% at 60% 25%, rgba(236, 72, 153, 0.2), transparent 70%);
  mix-blend-mode: soft-light;
  z-index: 2;
  pointer-events: none;
}

@keyframes floatGlow {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-14px); }
}

/* Mobile: keep the image full-width and contained instead of bleeding */
@media (max-width: 980px) {
  .hero-image-wrap {
    position: relative;
    inset: auto;
    width: 100%;
    height: 320px;
    justify-content: center;
  }
  .hero-image {
    height: 100%;
    width: auto;
    transform: none;
    -webkit-mask-image: radial-gradient(ellipse 75% 85% at center, #000 50%, transparent 95%);
    mask-image: radial-gradient(ellipse 75% 85% at center, #000 50%, transparent 95%);
  }
  .hero-image-wrap::before {
    inset: -10%;
    width: auto;
    right: -10%;
  }
  .hero-image-wrap::after {
    left: 10%;
  }
  .home-right::before { display: none; }
}

/* Brand pill */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 16px 7px 12px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  width: fit-content;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  margin-bottom: 28px;
  letter-spacing: 0.02em;
}
.brand-dot {
  width: 8px;
  height: 8px;
  background: var(--neon-cyan);
  border-radius: 50%;
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.8), 0 0 0 4px rgba(0, 229, 255, 0.15);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1;   transform: scale(1); }
  50%      { opacity: 0.6; transform: scale(0.92); }
}

/* Titles */
.title {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-size: clamp(38px, 5vw, 60px);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.02;
  margin: 0 0 22px;
  color: var(--text);
}
.title-accent {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline-block;
}
.subtitle {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 580px;
  margin: 0 0 36px;
  line-height: 1.55;
}

.section-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--text-soft);
  margin: 16px 0 18px;
}

/* =========================================================
   RULES — scoring pills
   ========================================================= */
.bareme {
  background: var(--glass);
  padding: 16px 18px 14px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-md);
  margin-bottom: 40px;
}
.bareme-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.bareme-table th {
  text-align: center;
  padding: 8px 10px 12px;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  border-bottom: 1px solid var(--glass-border);
}
.bareme-table th:first-child { text-align: left; }
.bareme-table td {
  padding: 12px 10px;
  text-align: center;
  border-bottom: 1px solid rgba(148, 163, 184, 0.08);
}
.bareme-table tbody tr:last-child td { border-bottom: none; }
.bareme-label {
  text-align: left !important;
  font-weight: 600;
  color: var(--text);
}
.bareme-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 46px;
  padding: 5px 10px;
  border-radius: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: 13px;
}
.bareme-pill-good { background: var(--good-soft); color: var(--good); box-shadow: inset 0 0 0 1px rgba(16, 255, 180, 0.3); }
.bareme-pill-bad  { background: var(--bad-soft); color: var(--bad); box-shadow: inset 0 0 0 1px rgba(255, 77, 109, 0.3); }
.bareme-pill-skip { background: rgba(148, 163, 184, 0.1); color: var(--text-muted); box-shadow: inset 0 0 0 1px rgba(148, 163, 184, 0.2); }
.bareme-note {
  margin: 12px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--glass-border);
  font-size: 12.5px;
  color: var(--text-muted);
  text-align: center;
  font-style: italic;
}
@media (max-width: 560px) {
  .bareme-table { font-size: 12.5px; }
  .bareme-table th, .bareme-table td { padding: 8px 5px; }
  .bareme-pill { min-width: 38px; padding: 4px 7px; font-size: 12px; }
}

/* =========================================================
   MODE / SUBJECT CARDS
   ========================================================= */
.modes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}
.modes-two { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }

.mode-card {
  text-align: left;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 22px;
  transition: transform 280ms cubic-bezier(.22,.61,.36,1),
              box-shadow 280ms ease,
              border-color 280ms ease,
              background 280ms ease;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-sm);
  color: inherit;
  position: relative;
  overflow: hidden;
}
.mode-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.06), transparent 60%);
  opacity: 0;
  transition: opacity 280ms ease;
  pointer-events: none;
}
.mode-card:hover {
  transform: translateY(-4px);
  border-color: var(--glass-border-strong);
  background: var(--glass-strong);
  box-shadow: var(--shadow-md), 0 0 0 1px rgba(0, 229, 255, 0.15);
}
.mode-card:hover::before { opacity: 1; }
.mode-card:active { transform: translateY(-1px); }
.mode-card-feature {
  border-color: rgba(0, 229, 255, 0.25);
  background:
    linear-gradient(135deg, rgba(0, 229, 255, 0.06), rgba(168, 85, 247, 0.06)),
    var(--glass);
}
.mode-card-feature:hover {
  border-color: rgba(0, 229, 255, 0.45);
  box-shadow: var(--shadow-md), 0 0 24px rgba(0, 229, 255, 0.18);
}

.mode-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.mode-card-actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}
.length-btn {
  flex: 1;
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  color: var(--text);
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease, box-shadow 180ms ease, color 180ms ease;
}
.length-btn:hover {
  background: var(--glass-strong);
  border-color: rgba(0, 229, 255, 0.4);
  color: var(--neon-cyan);
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.18);
  transform: translateY(-1px);
}
.length-btn:active { transform: translateY(0); }

.resume-banner {
  position: relative;
  margin: 0;
  background: linear-gradient(90deg, rgba(0, 229, 255, 0.14), rgba(168, 85, 247, 0.14));
  border-bottom: 1px solid rgba(0, 229, 255, 0.25);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.resume-banner-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px clamp(28px, 4vw, 72px);
  flex-wrap: wrap;
}
.resume-banner-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.resume-banner-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--neon-cyan);
}
.resume-banner-detail {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text);
}
.resume-banner-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.resume-banner-actions .btn {
  padding: 8px 16px;
  font-size: 13px;
}

@media (max-width: 560px) {
  .resume-banner-inner { padding: 12px 18px; }
  .resume-banner-actions .btn { flex: 1; min-width: 0; }
}
.mode-tag {
  display: inline-block;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.mode-tag-facile    { background: var(--good-soft); color: var(--good); box-shadow: inset 0 0 0 1px rgba(16, 255, 180, 0.3); }
.mode-tag-difficile { background: var(--bad-soft); color: var(--bad); box-shadow: inset 0 0 0 1px rgba(255, 77, 109, 0.3); }
.mode-tag-onto      { background: rgba(91, 140, 255, 0.14); color: var(--neon-cyan); box-shadow: inset 0 0 0 1px rgba(0, 229, 255, 0.3); }
.mode-tag-analogies { background: var(--warn-soft); color: var(--warn); box-shadow: inset 0 0 0 1px rgba(255, 181, 71, 0.3); }
.mode-tag-patho     { background: rgba(236, 72, 153, 0.14); color: var(--neon-pink); box-shadow: inset 0 0 0 1px rgba(236, 72, 153, 0.35); }
.mode-tag-neuro     { background: rgba(168, 85, 247, 0.14); color: var(--neon-violet); box-shadow: inset 0 0 0 1px rgba(168, 85, 247, 0.35); }

.mode-arrow {
  color: var(--text-soft);
  font-size: 20px;
  transition: transform 280ms cubic-bezier(.22,.61,.36,1), color 280ms ease;
}
.mode-card:hover .mode-arrow,
.subject-card:hover .mode-arrow {
  color: var(--neon-cyan);
  transform: translateX(6px);
}

.mode-title {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-size: 19px;
  font-weight: 600;
  margin: 0 0 6px;
  letter-spacing: -0.01em;
  color: var(--text);
}
.mode-desc { font-size: 14px; color: var(--text-muted); margin: 0; line-height: 1.55; }

/* =========================================================
   SUBJECT CARDS (home — choix matière)
   ========================================================= */
.subject-card {
  --accent: var(--neon-cyan);
  --accent-soft: rgba(0, 229, 255, 0.25);
  --accent-glow: rgba(0, 229, 255, 0.2);

  display: grid;
  grid-template-columns: 60px 1fr auto;
  align-items: center;
  gap: 22px;
  text-align: left;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 26px 28px;
  transition: transform 280ms cubic-bezier(.22,.61,.36,1),
              box-shadow 280ms ease,
              border-color 280ms ease,
              background 280ms ease;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-sm);
  color: inherit;
  position: relative;
  overflow: hidden;
}
.subject-card::before {
  content: "";
  position: absolute;
  top: 18px;
  bottom: 18px;
  left: 0;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: linear-gradient(180deg, transparent, var(--accent), transparent);
  opacity: 0.55;
  transition: opacity 280ms ease;
}
.subject-card:hover {
  transform: translateY(-3px);
  background: var(--glass-strong);
  border-color: var(--accent-soft);
  box-shadow: var(--shadow-md), 0 0 32px var(--accent-glow);
}
.subject-card:hover::before { opacity: 1; }
.subject-card:active { transform: translateY(0); }

.subject-card-neuro {
  --accent: var(--neon-violet);
  --accent-soft: rgba(168, 85, 247, 0.3);
  --accent-glow: rgba(168, 85, 247, 0.22);
}
.subject-card-patho {
  --accent: var(--neon-pink);
  --accent-soft: rgba(236, 72, 153, 0.3);
  --accent-glow: rgba(236, 72, 153, 0.22);
}

.subject-card-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--accent) 16%, transparent),
    color-mix(in srgb, var(--accent) 4%, transparent));
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow:
    inset 0 0 0 1px color-mix(in srgb, var(--accent) 30%, transparent),
    0 0 22px color-mix(in srgb, var(--accent) 18%, transparent);
  transition: transform 280ms ease, box-shadow 280ms ease;
}
.subject-card:hover .subject-card-icon {
  transform: scale(1.04);
  box-shadow:
    inset 0 0 0 1px color-mix(in srgb, var(--accent) 50%, transparent),
    0 0 32px color-mix(in srgb, var(--accent) 28%, transparent);
}
.subject-card-icon svg { width: 30px; height: 30px; }

.subject-card-content {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.subject-card-meta {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.subject-card-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
  line-height: 1.15;
}

.subject-card-arrow {
  font-size: 22px;
  color: var(--text-soft);
  transition: transform 280ms ease, color 280ms ease;
}
.subject-card:hover .subject-card-arrow {
  transform: translateX(6px);
  color: var(--accent);
}

@media (max-width: 560px) {
  .subject-card { padding: 22px 20px; gap: 16px; grid-template-columns: 52px 1fr auto; }
  .subject-card-icon { width: 48px; height: 48px; }
  .subject-card-icon svg { width: 26px; height: 26px; }
  .subject-card-title { font-size: 19px; }
  .subject-card-meta { font-size: 10.5px; }
}

/* =========================================================
   QUIZ
   ========================================================= */
.quiz-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
  gap: 12px;
}
.back-link {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  font-size: 13.5px;
  font-weight: 500;
  padding: 9px 16px;
  border-radius: var(--radius-full);
  transition: background 200ms ease, color 200ms ease, border-color 200ms ease;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.back-link:hover {
  background: var(--glass-strong);
  color: var(--text);
  border-color: var(--glass-border-strong);
}

.quiz-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13.5px;
  color: var(--text-muted);
}
.quiz-mode-label {
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: rgba(0, 229, 255, 0.1);
  color: var(--neon-cyan);
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  box-shadow: inset 0 0 0 1px rgba(0, 229, 255, 0.25);
}
.quiz-progress-text {
  font-family: 'JetBrains Mono', monospace;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  color: var(--text);
  font-size: 14px;
}

/* Progress bar */
.progress-bar {
  height: 4px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: 32px;
  position: relative;
}
.progress-fill {
  height: 100%;
  width: 5%;
  background: var(--grad-primary);
  border-radius: var(--radius-full);
  transition: width 380ms cubic-bezier(.22,.61,.36,1);
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.5);
}

/* Question card */
.question-card {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: clamp(28px, 4vw, 44px);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  position: relative;
}
.question-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.04), transparent 50%);
  pointer-events: none;
}

.question-text {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 600;
  margin: 0 0 32px;
  line-height: 1.35;
  letter-spacing: -0.015em;
  color: var(--text);
  position: relative;
}

/* Options */
.options {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 26px;
  position: relative;
}
.option {
  width: 100%;
  text-align: left;
  background: var(--glass);
  border: 1.5px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 18px 20px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  font-size: 15.5px;
  line-height: 1.5;
  color: var(--text);
  transition: border-color 200ms ease, background 200ms ease, transform 120ms ease, box-shadow 200ms ease;
  backdrop-filter: blur(8px);
}
.option:not(:disabled):hover {
  border-color: rgba(0, 229, 255, 0.4);
  background: var(--glass-strong);
  box-shadow: 0 0 24px rgba(0, 229, 255, 0.1);
}
.option:not(:disabled):active { transform: scale(0.997); }
.option:disabled { cursor: default; }

.option-letter {
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1.5px solid var(--glass-border-strong);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: 14px;
  color: var(--text-muted);
  transition: all 200ms ease;
}
.option:hover .option-letter {
  border-color: rgba(0, 229, 255, 0.5);
  color: var(--neon-cyan);
}
.option-text { flex: 1; }

.option.is-correct {
  background: var(--good-soft);
  border-color: var(--good);
  box-shadow: 0 0 32px var(--good-glow);
}
.option.is-correct .option-letter {
  background: var(--good);
  border-color: var(--good);
  color: var(--bg-0);
  box-shadow: 0 0 16px var(--good-glow);
}
.option.is-wrong {
  background: var(--bad-soft);
  border-color: var(--bad);
  box-shadow: 0 0 32px var(--bad-glow);
}
.option.is-wrong .option-letter {
  background: var(--bad);
  border-color: var(--bad);
  color: var(--bg-0);
  box-shadow: 0 0 16px var(--bad-glow);
}
.option.is-correct-not-picked {
  border-style: dashed;
  border-color: var(--good);
  background: var(--good-soft);
}
.option.is-correct-not-picked .option-letter {
  border-color: var(--good);
  color: var(--good);
}

/* Quiz actions */
.quiz-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 22px;
  border: 1.5px solid transparent;
  border-radius: var(--radius);
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: transform 100ms ease, background 200ms ease, box-shadow 200ms ease, border-color 200ms ease, color 200ms ease;
  text-decoration: none;
  position: relative;
}
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
  background: var(--grad-primary);
  color: #06080f;
  font-weight: 700;
  box-shadow: 0 8px 32px rgba(0, 229, 255, 0.35),
              inset 0 0 0 1px rgba(255, 255, 255, 0.18);
}
.btn-primary:hover {
  box-shadow: 0 12px 40px rgba(0, 229, 255, 0.55),
              inset 0 0 0 1px rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--glass);
  color: var(--text);
  border-color: var(--glass-border-strong);
  backdrop-filter: blur(10px);
}
.btn-secondary:hover {
  background: var(--glass-strong);
  border-color: rgba(0, 229, 255, 0.4);
  color: var(--text);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border-color: var(--glass-border);
}
.btn-ghost:hover {
  background: var(--glass);
  color: var(--text);
  border-color: var(--glass-border-strong);
}

/* Justifications */
.justifications {
  margin-top: 26px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-top: 1px solid var(--glass-border);
  padding-top: 26px;
}
.justif {
  display: flex;
  gap: 14px;
  padding: 16px 18px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
}
.justif-letter {
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border-strong);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: 13px;
  color: var(--text-muted);
}
.justif-body { flex: 1; font-size: 14.5px; line-height: 1.55; color: var(--text); }
.justif-status {
  display: inline-block;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  font-weight: 700;
  margin-right: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  vertical-align: middle;
}
.justif-status-good { background: var(--good-soft); color: var(--good); box-shadow: inset 0 0 0 1px rgba(16, 255, 180, 0.3); }
.justif-status-bad  { background: var(--bad-soft); color: var(--bad); box-shadow: inset 0 0 0 1px rgba(255, 77, 109, 0.3); }
.justif-text { color: var(--text-muted); margin-top: 6px; font-size: 13.5px; }
.justif-text strong { color: var(--text); font-weight: 600; }

.justif.justif-good {
  background: rgba(16, 255, 180, 0.06);
  border-color: rgba(16, 255, 180, 0.25);
}
.justif.justif-good .justif-letter {
  background: var(--good);
  border-color: var(--good);
  color: var(--bg-0);
  box-shadow: 0 0 12px var(--good-glow);
}

/* =========================================================
   RESULTS
   ========================================================= */
.results-card {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: clamp(32px, 4vw, 56px);
  text-align: center;
  box-shadow: var(--shadow-lg);
  margin-top: 32px;
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  position: relative;
  overflow: hidden;
}
.results-card::before {
  content: "";
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.18), transparent 60%);
  pointer-events: none;
}
.results-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--neon-cyan);
  margin: 0 0 10px;
}
.results-title {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-size: clamp(30px, 3.6vw, 42px);
  font-weight: 700;
  letter-spacing: -0.025em;
  margin: 0 0 28px;
}

.score-block {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 22px;
  position: relative;
}
.score-number {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-size: clamp(72px, 10vw, 112px);
  font-weight: 700;
  letter-spacing: -0.05em;
  line-height: 1;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-variant-numeric: tabular-nums;
  filter: drop-shadow(0 0 30px rgba(0, 229, 255, 0.4));
}
.score-out {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-size: 28px;
  font-weight: 600;
  color: var(--text-soft);
}

.status-pill {
  display: inline-block;
  padding: 11px 28px;
  border-radius: var(--radius-full);
  font-family: 'JetBrains Mono', monospace;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.12em;
  margin-bottom: 36px;
}
.status-pill.is-pass {
  background: rgba(16, 255, 180, 0.1);
  color: var(--good);
  box-shadow: inset 0 0 0 1px rgba(16, 255, 180, 0.35), 0 0 32px rgba(16, 255, 180, 0.25);
}
.status-pill.is-fail {
  background: rgba(255, 77, 109, 0.1);
  color: var(--bad);
  box-shadow: inset 0 0 0 1px rgba(255, 77, 109, 0.35), 0 0 32px rgba(255, 77, 109, 0.25);
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-bottom: 36px;
}
.stat {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 18px 12px;
  backdrop-filter: blur(8px);
}
.stat-value {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-size: 30px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  letter-spacing: -0.025em;
}
.stat-value-good { color: var(--good); text-shadow: 0 0 16px var(--good-glow); }
.stat-value-bad  { color: var(--bad); text-shadow: 0 0 16px var(--bad-glow); }
.stat-value-skip { color: var(--warn); }
.stat-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 6px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 500;
}

.results-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

/* =========================================================
   MISTAKES (persistent error archive)
   ========================================================= */
.screen-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.mistakes-pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 14px 9px 13px;
  border-radius: 999px;
  background: rgba(255, 77, 109, 0.12);
  color: var(--bad);
  border: 1px solid rgba(255, 77, 109, 0.3);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 200ms ease, background 200ms ease, border-color 200ms ease, box-shadow 200ms ease;
  box-shadow: 0 4px 16px rgba(255, 77, 109, 0.1);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}
.mistakes-pill:hover {
  background: rgba(255, 77, 109, 0.2);
  border-color: rgba(255, 77, 109, 0.55);
  box-shadow: 0 8px 22px rgba(255, 77, 109, 0.22);
  transform: translateY(-1px);
}
.mistakes-pill-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}
.mistakes-pill-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  padding: 0 7px;
  border-radius: 999px;
  background: var(--bad);
  color: #06080f;
  font-size: 11.5px;
  font-weight: 800;
  font-family: 'JetBrains Mono', monospace;
}

.mistakes-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}
.mistakes-progress {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-soft);
  background: var(--glass);
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--glass-border);
}

.mistakes-card {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(14px);
  margin: 24px 0 28px;
}
.mistakes-mode-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  margin: 0 0 12px;
}
.mistakes-question {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-size: 19px;
  font-weight: 600;
  margin: 0 0 20px;
  line-height: 1.4;
  letter-spacing: -0.01em;
}
.mistakes-answers {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 18px;
}
.mistakes-answer-block {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
}
.mistakes-answer-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-soft);
  margin-bottom: 6px;
}
.mistakes-answer-value {
  font-size: 14.5px;
  font-weight: 600;
  line-height: 1.35;
}

.mistakes-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}
.mistakes-actions .btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.mistakes-empty {
  text-align: center;
  color: var(--text-muted);
  font-size: 15px;
  margin-top: 28px;
}

@media (max-width: 640px) {
  .mistakes-answers { grid-template-columns: 1fr; }
  .mistakes-actions { flex-direction: column; }
  .mistakes-actions .btn { width: 100%; }
}

/* =========================================================
   REVIEW
   ========================================================= */
.review-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin: 28px 0 36px;
}
.review-item {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(12px);
}
.review-item-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
}
.review-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-soft);
}
.review-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  font-weight: 700;
  padding: 4px 11px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.review-tag.tag-bad  { background: var(--bad-soft); color: var(--bad); box-shadow: inset 0 0 0 1px rgba(255, 77, 109, 0.3); }
.review-tag.tag-skip { background: var(--warn-soft); color: var(--warn); box-shadow: inset 0 0 0 1px rgba(255, 181, 71, 0.3); }

.review-q {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-size: 17.5px;
  font-weight: 600;
  margin: 0 0 18px;
  line-height: 1.4;
  letter-spacing: -0.01em;
}

.review-answers {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 16px;
}
.review-answer-block {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
}
.review-answer-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-soft);
  margin-bottom: 6px;
}
.review-answer-value {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
}
.review-answer-value.answer-good { color: var(--good); }
.review-answer-value.answer-bad  { color: var(--bad); }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 980px) {
  .home-grid {
    grid-template-columns: 1fr;
    min-height: auto;
  }
  .home-right {
    order: -1;
    min-height: 300px;
  }
  .home-left {
    padding: 40px 24px 60px;
  }
}

@media (max-width: 640px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .review-answers { grid-template-columns: 1fr; }
  .quiz-actions { flex-direction: column-reverse; align-items: stretch; }
  .quiz-actions .btn { width: 100%; }
  .results-actions .btn { flex: 1 1 auto; min-width: 140px; }
  .title { font-size: 38px; }
}

/* =========================================================
   SCROLLBAR (subtle)
   ========================================================= */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-0); }
::-webkit-scrollbar-thumb {
  background: var(--glass-border-strong);
  border-radius: var(--radius-full);
  border: 2px solid var(--bg-0);
}
::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, 0.25); }

/* Selection */
::selection {
  background: rgba(0, 229, 255, 0.3);
  color: var(--text);
}