:root {
  --primary-cyan: #00f2fe;
  --secondary-cyan: #4facfe;
  --glow-cyan: rgba(0, 242, 254, 0.6);
  --glow-cyan-strong: rgba(0, 242, 254, 0.9);
  --accent-gold: #ffb703;
  --accent-danger: #ff4757;
  --bg-dark: #070c14;
  --bg-panel: rgba(10, 20, 36, 0.85);
  --bg-card: rgba(13, 27, 48, 0.7);
  --border-cyan: rgba(0, 242, 254, 0.3);
  --border-cyan-bright: rgba(0, 242, 254, 0.8);
  --text-main: #e2f1ff;
  --text-dim: #7da5c9;
  --font-hud: 'Orbitron', monospace, sans-serif;
  --font-text: 'Rajdhani', sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-text);
  font-size: 16px;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* Grille futuriste de fond */
.hud-background-grid {
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(0, 242, 254, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0, 242, 254, 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

.hud-overlay-vignette {
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, transparent 40%, rgba(2, 6, 12, 0.9) 100%);
  pointer-events: none;
  z-index: 1;
}

/* Conteneur principal */
.app-container {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding: 18px 24px;
  max-width: 1600px;
  margin: 0 auto;
}

/* En-tête */
.hud-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-cyan);
  padding-bottom: 14px;
  margin-bottom: 20px;
}

.hud-brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo-circle {
  width: 44px;
  height: 44px;
  border: 2px solid var(--primary-cyan);
  border-radius: 50%;
  position: relative;
  box-shadow: 0 0 15px var(--glow-cyan);
}

.logo-circle::after {
  content: '';
  position: absolute;
  inset: 6px;
  background: var(--primary-cyan);
  border-radius: 50%;
  opacity: 0.8;
  animation: pulseCore 2.5s infinite ease-in-out;
}

.brand-text h1 {
  font-family: var(--font-hud);
  font-size: 1.8rem;
  letter-spacing: 4px;
  color: var(--primary-cyan);
  text-shadow: 0 0 12px var(--glow-cyan);
}

.version-tag {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-dim);
  letter-spacing: 2px;
}

.hud-header-controls {
  display: flex;
  align-items: center;
  gap: 20px;
}

.clock-display {
  font-family: var(--font-hud);
  font-size: 1.4rem;
  letter-spacing: 2px;
  color: var(--primary-cyan);
  border: 1px solid var(--border-cyan);
  padding: 6px 14px;
  background: rgba(0, 242, 254, 0.05);
  box-shadow: inset 0 0 10px rgba(0, 242, 254, 0.1);
}

/* Boutons HUD */
.hud-btn {
  font-family: var(--font-hud);
  font-size: 0.85rem;
  letter-spacing: 1.5px;
  background: rgba(0, 242, 254, 0.1);
  color: var(--primary-cyan);
  border: 1px solid var(--border-cyan-bright);
  padding: 8px 16px;
  border-radius: 4px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.25s ease;
  text-transform: uppercase;
}

.hud-btn:hover {
  background: var(--primary-cyan);
  color: var(--bg-dark);
  box-shadow: 0 0 16px var(--glow-cyan-strong);
}

.hud-btn-primary {
  background: rgba(0, 242, 254, 0.25);
  border-color: var(--primary-cyan);
  font-weight: 700;
}

.hud-btn-danger {
  border-color: var(--accent-danger);
  color: var(--accent-danger);
}

.hud-btn-danger:hover {
  background: var(--accent-danger);
  color: #fff;
  box-shadow: 0 0 16px rgba(255, 71, 87, 0.7);
}

.hud-btn-small {
  font-family: var(--font-hud);
  font-size: 0.75rem;
  background: transparent;
  color: var(--text-dim);
  border: 1px solid var(--border-cyan);
  padding: 4px 10px;
  cursor: pointer;
  transition: all 0.2s;
}

.hud-btn-small:hover {
  color: var(--primary-cyan);
  border-color: var(--primary-cyan);
}

/* Layout Principal */
.hud-main {
  flex: 1;
  display: grid;
  grid-template-columns: 320px 1fr 380px;
  gap: 20px;
  align-items: stretch;
}

@media (max-width: 1100px) {
  .hud-main {
    grid-template-columns: 1fr;
  }
}

/* Cartes HUD */
.hud-card {
  background: var(--bg-card);
  border: 1px solid var(--border-cyan);
  backdrop-filter: blur(8px);
  padding: 18px;
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  position: relative;
}

.hud-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 10px;
  height: 10px;
  border-top: 2px solid var(--primary-cyan);
  border-left: 2px solid var(--primary-cyan);
}

.hud-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 10px;
  height: 10px;
  border-bottom: 2px solid var(--primary-cyan);
  border-right: 2px solid var(--primary-cyan);
}

.card-title {
  font-family: var(--font-hud);
  font-size: 0.95rem;
  letter-spacing: 2px;
  color: var(--primary-cyan);
  border-bottom: 1px solid var(--border-cyan);
  padding-bottom: 8px;
  margin-bottom: 16px;
}

/* Diagnostic items */
.diag-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px dashed rgba(0, 242, 254, 0.15);
  font-size: 0.9rem;
  font-weight: 600;
}

.status-badge {
  font-family: var(--font-hud);
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 2px;
  border: 1px solid var(--border-cyan);
  color: var(--text-dim);
}

.status-badge.active {
  color: var(--primary-cyan);
  border-color: var(--primary-cyan);
  background: rgba(0, 242, 254, 0.15);
  box-shadow: 0 0 8px var(--glow-cyan);
}

.status-badge.highlight {
  color: var(--accent-gold);
  border-color: var(--accent-gold);
  background: rgba(255, 183, 3, 0.1);
}

.tips-box {
  margin-top: 24px;
  background: rgba(0, 0, 0, 0.3);
  padding: 12px;
  border-left: 3px solid var(--primary-cyan);
}

.tips-title {
  font-family: var(--font-hud);
  font-size: 0.8rem;
  color: var(--primary-cyan);
  margin-bottom: 8px;
}

.tips-box ul {
  list-style: none;
  font-size: 0.9rem;
  color: var(--text-dim);
}

.tips-box li {
  margin-bottom: 6px;
  line-height: 1.3;
}

/* Zone Centrale / Arc Reactor */
.hud-center-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  gap: 24px;
  padding: 20px 0;
}

.arc-reactor-container {
  position: relative;
  width: 320px;
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.reactor-outer-ring {
  position: absolute;
  inset: 0;
  border: 2px dashed var(--primary-cyan);
  border-radius: 50%;
  box-shadow: 0 0 25px var(--glow-cyan);
}

.reactor-dashes-ring {
  position: absolute;
  inset: 20px;
  border: 2px dotted var(--secondary-cyan);
  border-radius: 50%;
  opacity: 0.7;
}

.reactor-inner-ring {
  position: absolute;
  inset: 45px;
  border: 1px solid rgba(0, 242, 254, 0.4);
  border-radius: 50%;
}

#waveformCanvas {
  position: absolute;
  inset: 20px;
  width: 280px;
  height: 280px;
  pointer-events: none;
  z-index: 2;
}

.reactor-core-btn {
  position: relative;
  z-index: 3;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 242, 254, 0.25) 0%, rgba(13, 27, 48, 0.9) 80%);
  border: 2px solid var(--primary-cyan);
  color: var(--primary-cyan);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 0 20px var(--glow-cyan), inset 0 0 15px var(--glow-cyan);
}

.reactor-core-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 0 35px var(--glow-cyan-strong), inset 0 0 25px var(--glow-cyan-strong);
}

.reactor-core-btn.listening {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
  background: radial-gradient(circle, rgba(255, 183, 3, 0.35) 0%, rgba(13, 27, 48, 0.9) 80%);
  box-shadow: 0 0 35px rgba(255, 183, 3, 0.8), inset 0 0 20px rgba(255, 183, 3, 0.8);
  animation: pulseGold 1.5s infinite alternate;
}

.reactor-core-btn.speaking {
  border-color: var(--primary-cyan);
  animation: pulseCyan 0.8s infinite alternate;
}

.core-text {
  font-family: var(--font-hud);
  font-size: 0.75rem;
  letter-spacing: 2px;
  margin-top: 6px;
  font-weight: 700;
}

/* Animations de rotation */
.ring-spin-slow {
  animation: spinClockwise 20s linear infinite;
}

.ring-spin-reverse {
  animation: spinCounterClockwise 15s linear infinite;
}

@keyframes spinClockwise {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes spinCounterClockwise {
  from { transform: rotate(360deg); }
  to { transform: rotate(0deg); }
}

@keyframes pulseCore {
  0%, 100% { transform: scale(0.9); opacity: 0.6; }
  50% { transform: scale(1.1); opacity: 1; }
}

@keyframes pulseGold {
  0% { transform: scale(1); box-shadow: 0 0 20px rgba(255, 183, 3, 0.5); }
  100% { transform: scale(1.06); box-shadow: 0 0 40px rgba(255, 183, 3, 0.9); }
}

@keyframes pulseCyan {
  0% { transform: scale(1); box-shadow: 0 0 20px var(--glow-cyan); }
  100% { transform: scale(1.08); box-shadow: 0 0 45px var(--glow-cyan-strong); }
}

/* Statut & Transcriptions */
.hud-status-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(0, 242, 254, 0.05);
  border: 1px solid var(--border-cyan);
  padding: 10px 20px;
  border-radius: 20px;
  font-family: var(--font-hud);
  font-size: 0.85rem;
  letter-spacing: 1px;
}

.status-pulse-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text-dim);
}

.status-pulse-dot.online {
  background: var(--primary-cyan);
  box-shadow: 0 0 10px var(--primary-cyan);
}

.status-pulse-dot.listening {
  background: var(--accent-gold);
  box-shadow: 0 0 12px var(--accent-gold);
}

.status-pulse-dot.speaking {
  background: #2ed573;
  box-shadow: 0 0 12px #2ed573;
}

.live-transcript {
  width: 90%;
  max-width: 580px;
  background: rgba(6, 15, 27, 0.85);
  border: 1px solid var(--border-cyan);
  border-radius: 6px;
  padding: 14px 18px;
  text-align: center;
}

.transcript-label {
  font-family: var(--font-hud);
  font-size: 0.75rem;
  letter-spacing: 2px;
  color: var(--primary-cyan);
  display: block;
  margin-bottom: 6px;
}

#liveTranscriptText {
  font-size: 1.1rem;
  color: var(--text-main);
  font-weight: 500;
  min-height: 26px;
}

/* Journal des conversations */
.hud-right-panel {
  display: flex;
  flex-direction: column;
  height: 580px;
}

.chat-log {
  flex: 1;
  overflow-y: auto;
  padding-right: 6px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 12px;
}

.chat-log::-webkit-scrollbar {
  width: 5px;
}

.chat-log::-webkit-scrollbar-thumb {
  background: var(--border-cyan);
  border-radius: 4px;
}

.chat-entry {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(0, 242, 254, 0.2);
  border-radius: 6px;
  padding: 10px 12px;
  animation: fadeIn 0.3s ease;
}

.chat-entry.user {
  border-left: 3px solid var(--accent-gold);
  background: rgba(255, 183, 3, 0.05);
}

.chat-entry.system {
  border-left: 3px solid var(--primary-cyan);
  background: rgba(0, 242, 254, 0.05);
}

.chat-entry .sender {
  font-family: var(--font-hud);
  font-size: 0.75rem;
  letter-spacing: 1.5px;
  color: var(--primary-cyan);
  display: inline-block;
  margin-right: 8px;
}

.chat-entry.user .sender {
  color: var(--accent-gold);
}

.chat-entry .time {
  font-size: 0.75rem;
  color: var(--text-dim);
}

.chat-entry p {
  margin-top: 4px;
  font-size: 0.95rem;
  line-height: 1.4;
  word-break: break-word;
  user-select: text;
}

.chat-input-bar {
  display: flex;
  gap: 8px;
}

.chat-input-bar input {
  flex: 1;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-cyan);
  border-radius: 4px;
  padding: 10px 14px;
  color: var(--text-main);
  font-family: var(--font-text);
  font-size: 1rem;
}

.chat-input-bar input:focus {
  outline: none;
  border-color: var(--primary-cyan);
  box-shadow: 0 0 10px var(--glow-cyan);
}

.hud-btn-send {
  background: rgba(0, 242, 254, 0.2);
  border: 1px solid var(--primary-cyan);
  color: var(--primary-cyan);
  border-radius: 4px;
  padding: 0 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.hud-btn-send:hover {
  background: var(--primary-cyan);
  color: var(--bg-dark);
}

/* Footer HUD */
.hud-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-cyan);
  padding-top: 12px;
  margin-top: 20px;
  font-size: 0.85rem;
}

.hud-stats {
  display: flex;
  gap: 20px;
  font-family: var(--font-hud);
  letter-spacing: 1px;
}

.glow-cyan {
  color: var(--primary-cyan);
  text-shadow: 0 0 8px var(--glow-cyan);
}

.hud-actions-footer {
  display: flex;
  gap: 10px;
}

/* Modal */
.modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(2, 6, 12, 0.85);
  backdrop-filter: blur(10px);
  z-index: 100;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-backdrop.open {
  display: flex;
}

.modal-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-cyan-bright);
  box-shadow: 0 0 40px rgba(0, 242, 254, 0.3);
  border-radius: 8px;
  width: 100%;
  max-width: 560px;
  display: flex;
  flex-direction: column;
  animation: fadeIn 0.25s ease;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-cyan);
}

.modal-header h2 {
  font-family: var(--font-hud);
  font-size: 1.1rem;
  letter-spacing: 2px;
  color: var(--primary-cyan);
}

.close-btn {
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-size: 1.6rem;
  cursor: pointer;
}

.close-btn:hover {
  color: var(--accent-danger);
}

.modal-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-height: 70vh;
  overflow-y: auto;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-family: var(--font-hud);
  font-size: 0.8rem;
  letter-spacing: 1px;
  color: var(--text-dim);
}

.hud-select, .hud-input {
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid var(--border-cyan);
  color: var(--text-main);
  padding: 10px 12px;
  border-radius: 4px;
  font-family: var(--font-text);
  font-size: 1rem;
}

.hud-select:focus, .hud-input:focus {
  outline: none;
  border-color: var(--primary-cyan);
  box-shadow: 0 0 8px var(--glow-cyan);
}

.hud-divider {
  border: 0;
  height: 1px;
  background: var(--border-cyan);
  margin: 6px 0;
}

.form-row {
  display: flex;
  gap: 16px;
}

.form-row .half {
  flex: 1;
}

.help-text {
  font-size: 0.75rem;
  color: var(--text-dim);
}

.modal-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border-cyan);
  display: flex;
  justify-content: flex-end;
}

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