:root {
  --bg-deep: #070b14;
  --bg-card: #0f172a;
  --bg-elevated: #1e293b;
  --border-subtle: rgba(148, 163, 184, 0.16);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --accent-cyan: #00e5ff;
  --accent-coral: #ff4d6d;
  --accent-emerald: #10b981;
  --accent-solar: #fbbf24;
  --accent-nebula: #a855f7;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, sans-serif;
  background: radial-gradient(circle at 50% 0%, #111c38 0%, var(--bg-deep) 70%);
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.5;
}

.topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1.5rem;
  background: rgba(15, 23, 42, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 50;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-logo {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-nebula));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.25rem;
  color: #040814;
}

.brand-title {
  font-weight: 800;
  letter-spacing: 0.08em;
  font-size: 1.05rem;
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.nav-tabs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.nav-tab {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
  padding: 0.5rem 0.95rem;
  border-radius: 0.5rem;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.88rem;
  transition: all 0.15s ease;
}

.nav-tab:hover {
  color: var(--text-main);
  border-color: rgba(0, 229, 255, 0.4);
}

.nav-tab.active {
  background: rgba(0, 229, 255, 0.14);
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
}

.telemetry-bar {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.pill {
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
}

.pill-xp {
  color: var(--accent-cyan);
}

.pill-streak {
  color: var(--accent-solar);
}

.pill-wpm {
  color: var(--accent-coral);
}

.container {
  max-width: 1360px;
  margin: 1.5rem auto;
  padding: 0 1.25rem 3rem;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.card {
  background: rgba(15, 23, 42, 0.92);
  border: 1px solid var(--border-subtle);
  border-radius: 0.85rem;
  padding: 1.25rem;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
}

.card-header h2 {
  font-size: 1.15rem;
  margin-bottom: 0.25rem;
}

.muted {
  color: var(--text-muted);
  font-size: 0.86rem;
}

.hidden {
  display: none !important;
}

/* ========================================================================== */
/* MODE 1 : RSVP LAYOUT & LECTEUR ORP                                         */
/* ========================================================================== */
.rsvp-layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 1.25rem;
  align-items: start;
}

@media (max-width: 980px) {
  .rsvp-layout {
    grid-template-columns: 1fr;
  }
}

.level-filters {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
  margin: 0.85rem 0;
}

.chip {
  background: var(--bg-elevated);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  padding: 0.28rem 0.65rem;
  font-size: 0.76rem;
  cursor: pointer;
  font-weight: 600;
}

.chip.active {
  background: var(--accent-cyan);
  color: #040814;
  border-color: var(--accent-cyan);
}

.text-list {
  max-height: 620px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding-right: 0.25rem;
}

.text-item {
  text-align: left;
  background: rgba(30, 41, 59, 0.55);
  border: 1px solid var(--border-subtle);
  border-radius: 0.6rem;
  padding: 0.7rem 0.85rem;
  cursor: pointer;
  color: var(--text-main);
  transition: all 0.15s ease;
}

.text-item:hover {
  border-color: rgba(0, 229, 255, 0.45);
  background: rgba(30, 41, 59, 0.9);
}

.text-item.active {
  border-color: var(--accent-cyan);
  background: rgba(0, 229, 255, 0.1);
}

.text-item-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.74rem;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.text-item-title {
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.25rem;
}

.text-item-meta {
  display: flex;
  gap: 0.65rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.reader-column {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.reader-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.6rem;
  font-size: 0.84rem;
}

.badge-level {
  background: rgba(0, 229, 255, 0.15);
  color: var(--accent-cyan);
  padding: 0.2rem 0.6rem;
  border-radius: 0.35rem;
  font-weight: 700;
  margin-right: 0.4rem;
}

.badge-category {
  background: rgba(168, 85, 247, 0.16);
  color: #d8b4fe;
  padding: 0.2rem 0.6rem;
  border-radius: 0.35rem;
  font-weight: 600;
}

.reader-title {
  font-size: 1.35rem;
  margin-bottom: 1rem;
}

/* Écran RSVP avec alignement strict sur le Point de Reconnaissance Optimal (ORP) */
.rsvp-stage {
  position: relative;
  background: #04070f;
  border: 2px solid rgba(0, 229, 255, 0.28);
  border-radius: 0.85rem;
  height: 210px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  box-shadow: inset 0 0 40px rgba(0, 229, 255, 0.06);
}

.reticle-top,
.reticle-bottom {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 24px;
  background: var(--accent-coral);
  opacity: 0.85;
}

.reticle-top {
  top: 14px;
}

.reticle-bottom {
  bottom: 38px;
}

.orp-word-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  width: 100%;
  align-items: baseline;
  font-family: "JetBrains Mono", "Fira Code", "Courier New", monospace;
  font-size: clamp(2rem, 4vw, 3.1rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  user-select: none;
}

.orp-prefix {
  text-align: right;
  color: var(--text-main);
}

.orp-pivot {
  text-align: center;
  color: var(--accent-coral);
  text-shadow: 0 0 16px rgba(255, 77, 109, 0.65);
}

.orp-suffix {
  text-align: left;
  color: var(--text-main);
}

.rsvp-substatus {
  position: absolute;
  bottom: 10px;
  font-size: 0.76rem;
  color: var(--text-muted);
}

.progress-track {
  width: 100%;
  height: 8px;
  background: var(--bg-elevated);
  border-radius: 999px;
  overflow: hidden;
  margin: 0.9rem 0;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-nebula));
  transition: width 0.1s linear;
}

.rsvp-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.5rem;
}

.wpm-control-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  min-width: 280px;
  flex: 1;
}

#wpm-slider {
  width: 100%;
  accent-color: var(--accent-cyan);
  cursor: pointer;
}

.wpm-presets {
  display: flex;
  gap: 0.4rem;
}

.btn-preset {
  background: var(--bg-elevated);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
  border-radius: 0.35rem;
  padding: 0.2rem 0.55rem;
  font-size: 0.75rem;
  cursor: pointer;
}

.btn-preset:hover {
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
}

.playback-buttons {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.btn {
  padding: 0.62rem 1.1rem;
  border-radius: 0.5rem;
  font-weight: 700;
  font-size: 0.88rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
}

.btn-primary {
  background: var(--accent-cyan);
  color: #040814;
}

.btn-primary:hover {
  filter: brightness(1.1);
}

.btn-secondary {
  background: var(--bg-elevated);
  color: var(--text-main);
  border-color: var(--border-subtle);
}

.btn-outline {
  background: transparent;
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
}

/* QUIZ QCM */
.quiz-question-block {
  margin-top: 1rem;
  padding: 0.95rem;
  background: rgba(30, 41, 59, 0.5);
  border: 1px solid var(--border-subtle);
  border-radius: 0.65rem;
}

.quiz-question-title {
  font-weight: 700;
  margin-bottom: 0.65rem;
  font-size: 0.95rem;
}

.quiz-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

@media (max-width: 680px) {
  .quiz-options {
    grid-template-columns: 1fr;
  }
}

.quiz-option-label {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.55rem 0.75rem;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-subtle);
  border-radius: 0.45rem;
  cursor: pointer;
  font-size: 0.88rem;
}

.quiz-option-label:hover {
  border-color: var(--accent-cyan);
}

.quiz-actions {
  margin-top: 1.1rem;
}

.quiz-result {
  margin-top: 1.1rem;
  padding: 1rem;
  border-radius: 0.65rem;
  font-weight: 600;
}

.quiz-result.pass {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid var(--accent-emerald);
  color: #a7f3d0;
}

.quiz-result.fail {
  background: rgba(255, 77, 109, 0.15);
  border: 1px solid var(--accent-coral);
  color: #fecdd3;
}

/* ========================================================================== */
/* MODE 2 : MÉMOIRE FLASH (FORMES & COULEURS)                                 */
/* ========================================================================== */
.flash-settings {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.9rem;
  margin: 1.1rem 0;
  align-items: end;
}

.setting-field label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
}

.setting-field select {
  width: 100%;
  padding: 0.55rem 0.7rem;
  background: var(--bg-elevated);
  color: var(--text-main);
  border: 1px solid var(--border-subtle);
  border-radius: 0.45rem;
  font-size: 0.88rem;
}

.flash-stage {
  position: relative;
  background: #04070f;
  border: 2px solid rgba(168, 85, 247, 0.35);
  border-radius: 0.9rem;
  height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.flash-step-badge {
  position: absolute;
  top: 12px;
  right: 16px;
  background: var(--bg-elevated);
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  font-size: 0.78rem;
  color: var(--accent-cyan);
  font-weight: 700;
}

.flash-canvas {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 1rem;
}

.flash-placeholder {
  color: var(--text-muted);
  max-width: 420px;
}

.flash-countdown {
  font-size: 3.5rem;
  font-weight: 900;
  color: var(--accent-cyan);
}

.flash-prompt {
  font-size: 1.1rem;
  margin-bottom: 0.9rem;
  color: var(--accent-cyan);
}

.flash-options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 0.85rem;
}

.flash-choice-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.55rem;
  padding: 1rem;
  background: rgba(30, 41, 59, 0.65);
  border: 1px solid var(--border-subtle);
  border-radius: 0.75rem;
  color: var(--text-main);
  cursor: pointer;
  font-weight: 700;
  font-size: 0.92rem;
  transition: all 0.15s ease;
}

.flash-choice-btn:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-2px);
}

/* ========================================================================== */
/* ONGLET 3 : TABLEAU DE BORD & GAMIFICATION                                  */
/* ========================================================================== */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.kpi-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.kpi-value {
  font-size: 1.9rem;
  font-weight: 800;
  margin: 0.25rem 0;
}

.kpi-sub {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.accent-cyan {
  color: var(--accent-cyan);
}
.accent-coral {
  color: var(--accent-coral);
}
.accent-emerald {
  color: var(--accent-emerald);
}
.accent-solar {
  color: var(--accent-solar);
}
.mt-sm {
  margin-top: 0.6rem;
}

.dashboard-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

@media (max-width: 900px) {
  .dashboard-columns {
    grid-template-columns: 1fr;
  }
}

.ranks-list,
.sessions-list {
  margin-top: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.rank-row,
.session-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.65rem 0.85rem;
  background: rgba(30, 41, 59, 0.5);
  border: 1px solid var(--border-subtle);
  border-radius: 0.55rem;
  font-size: 0.86rem;
}

.rank-row.unlocked {
  border-color: rgba(0, 229, 255, 0.45);
  background: rgba(0, 229, 255, 0.08);
}