/* ==========================================================================
   Pilot Mental Math & Time Trainer — Design System & Styles
   Aviation HUD / Cockpit Minimal Dark Aesthetic (Single Viewport Fit)
   ========================================================================== */

:root {
  /* Color Palette */
  --bg-main: #090d16;
  --bg-surface: #111827;
  --bg-card: rgba(17, 24, 39, 0.85);
  --bg-card-hover: rgba(31, 41, 55, 0.9);
  --bg-elevated: #1f2937;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(56, 189, 248, 0.5);
  
  /* Aviation Neon Accents */
  --cyan-primary: #06b6d4;
  --cyan-glow: rgba(6, 182, 212, 0.35);
  --sky-accent: #38bdf8;
  --sky-glow: rgba(56, 189, 248, 0.25);
  --amber-warning: #f59e0b;
  --amber-glow: rgba(245, 158, 11, 0.3);
  --emerald-success: #10b981;
  --emerald-glow: rgba(16, 185, 129, 0.3);
  --rose-danger: #f43f5e;
  --rose-glow: rgba(244, 63, 94, 0.3);
  
  /* Text */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  /* Typography */
  --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --font-hud: 'Orbitron', var(--font-mono);
  
  /* Elevation & Shadows */
  --shadow-card: 0 12px 30px -10px rgba(0, 0, 0, 0.6), 0 0 0 1px var(--border-subtle);
  --shadow-glow-cyan: 0 0 20px var(--cyan-glow);
  --shadow-glow-emerald: 0 0 25px var(--emerald-glow);
  --shadow-glow-rose: 0 0 25px var(--rose-glow);
  
  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base Setup */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  width: 100%;
  overflow: hidden;
}

body {
  font-family: var(--font-ui);
  background-color: var(--bg-main);
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(6, 182, 212, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 10% 90%, rgba(245, 158, 11, 0.04) 0%, transparent 40%),
    linear-gradient(180deg, #090d16 0%, #05070c 100%);
  color: var(--text-primary);
  display: flex;
  justify-content: center;
  align-items: center;
  line-height: 1.4;
  -webkit-font-smoothing: antialiased;
}

/* Main Container (Fits 100vh Single Viewport) */
.app-container {
  width: 100%;
  max-width: 1120px;
  height: 100vh;
  max-height: 100vh;
  padding: 0.55rem 0.9rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 0.45rem;
  position: relative;
}

/* Protocol Warning Banner */
.protocol-warning {
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.4);
  border-radius: 8px;
  padding: 0.4rem 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: #fbbf24;
  font-size: 0.76rem;
}

.warning-icon {
  font-size: 1rem;
  line-height: 1;
}

.warning-content {
  display: flex;
  gap: 0.4rem;
  align-items: center;
}

.warning-title {
  font-weight: 700;
  color: #fef08a;
}

.warning-msg {
  color: #fde68a;
}

.warning-msg code {
  background: rgba(0, 0, 0, 0.35);
  padding: 0.05rem 0.3rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  color: #ffffff;
}

.warning-msg a {
  color: #38bdf8;
  font-weight: 600;
  text-decoration: underline;
}

/* Header & Integrated Stats */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.15rem 0.2rem;
  gap: 0.75rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.brand-badge {
  font-family: var(--font-hud);
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--cyan-primary);
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid rgba(6, 182, 212, 0.25);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  text-shadow: 0 0 8px var(--cyan-glow);
}

.brand h1 {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  white-space: nowrap;
}

/* Header Embedded Stats Bar */
.stats-bar {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.stat-card {
  background: rgba(17, 24, 39, 0.7);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 0.2rem 0.55rem;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.06em;
}

.stat-value {
  font-family: var(--font-hud);
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--text-primary);
}

.text-success { color: var(--emerald-success); }
.text-cyan { color: var(--sky-accent); }
.text-amber { color: var(--amber-warning); }

.streak-wrapper {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}

.streak-flame {
  font-size: 0.8rem;
  filter: grayscale(1);
  opacity: 0.4;
  transition: var(--transition-normal);
}

.streak-flame.streak-active {
  filter: grayscale(0);
  opacity: 1;
  animation: flame-bounce 0.8s ease-in-out infinite alternate;
}

@keyframes flame-bounce {
  from { transform: translateY(0) scale(1); }
  to { transform: translateY(-2px) scale(1.15); }
}

/* Status Pill */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(17, 24, 39, 0.7);
  border: 1px solid var(--border-subtle);
  padding: 0.22rem 0.6rem;
  border-radius: 9999px;
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
}

.pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-muted);
}

.status-ready .pulse-dot {
  background: var(--emerald-success);
  box-shadow: 0 0 6px var(--emerald-glow);
}

.status-speaking .pulse-dot {
  background: var(--cyan-primary);
  box-shadow: 0 0 8px var(--cyan-glow);
  animation: pulse-ring 1s infinite;
}

.status-listening .pulse-dot {
  background: var(--rose-danger);
  box-shadow: 0 0 8px var(--rose-glow);
  animation: pulse-ring 0.8s infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.4); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

/* ==========================================================================
   2-Column Cockpit Workspace Layout (Left: Settings | Right: Question Drill)
   ========================================================================== */

.cockpit-workspace {
  display: grid;
  grid-template-columns: 0.95fr 1.2fr;
  gap: 0.65rem;
  flex: 1;
  min-height: 0; /* Prevents flex overflow */
}

/* Cockpit Panel (Left Column) */
.cockpit-panel {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 0.75rem 0.9rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 0.45rem;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.cockpit-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--sky-accent), transparent);
  opacity: 0.4;
}

/* Mode Bar */
.mode-bar {
  width: 100%;
}

.button-group.mode-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 0.2rem;
  border-radius: 10px;
  gap: 0.25rem;
}

.mode-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 0.38rem 0.4rem;
  border-radius: 7px;
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.mode-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}

.mode-btn.active {
  background: var(--sky-accent);
  color: #04101e;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(56, 189, 248, 0.3);
}

/* Dropdown Controls Row */
.controls-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.35rem;
}

.control-item {
  display: flex;
  flex-direction: column;
  gap: 0.18rem;
}

.control-item label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 0.03em;
}

.form-select {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  border-radius: 7px;
  padding: 0.32rem 0.45rem;
  font-family: var(--font-ui);
  font-size: 0.74rem;
  font-weight: 500;
  outline: none;
  cursor: pointer;
  transition: var(--transition-fast);
  width: 100%;
}

.form-select:hover {
  border-color: rgba(255, 255, 255, 0.2);
}

.form-select:focus {
  border-color: var(--sky-accent);
}

.form-select option {
  background: var(--bg-surface);
  color: var(--text-primary);
}

/* Sliders Row */
.sliders-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.45rem;
}

.audio-slider-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 9px;
  padding: 0.4rem 0.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.slider-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.slider-label-group {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  color: var(--text-secondary);
}

.slider-label-group label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
}

.slider-val {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--sky-accent);
}

.form-range {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

.form-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--sky-accent);
  box-shadow: 0 0 6px var(--sky-glow);
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.form-range::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

/* Toggles Grid */
.toggles-action-row {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  border-top: 1px solid var(--border-subtle);
  padding-top: 0.35rem;
}

.toggles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.25rem 0.4rem;
}

.switch-control {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  user-select: none;
}

.switch-control input {
  display: none;
}

.switch-slider {
  width: 26px;
  height: 14px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 9999px;
  position: relative;
  transition: var(--transition-fast);
  flex-shrink: 0;
}

.switch-slider::before {
  content: '';
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #ffffff;
  top: 2px;
  left: 2px;
  transition: var(--transition-fast);
}

.switch-control input:checked + .switch-slider {
  background: var(--emerald-success);
}

.switch-control input:checked + .switch-slider::before {
  transform: translateX(12px);
}

.switch-label {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-secondary);
}

/* Panel Bottom Action Buttons */
.panel-buttons {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 0.4rem;
}

.danger-btn-pill {
  background: rgba(244, 63, 94, 0.1);
  border: 1px solid rgba(244, 63, 94, 0.3);
  color: var(--rose-danger);
  padding: 0.25rem 0.6rem;
  border-radius: 9999px;
  font-size: 0.7rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
}

.danger-btn-pill:hover {
  background: rgba(244, 63, 94, 0.25);
  border-color: var(--rose-danger);
}

/* ==========================================================================
   Main Drill HUD Card (Left Column)
   ========================================================================== */

.drill-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 0.75rem 0.95rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 0.4rem;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.drill-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan-primary), transparent);
  opacity: 0.5;
}

.drill-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.meta-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--sky-accent);
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.2);
  padding: 0.15rem 0.5rem;
  border-radius: 5px;
}

.meta-status {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.74rem;
  color: var(--text-muted);
}

/* Audio Wave Visualizer */
.audio-wave {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  height: 12px;
}

.audio-wave span {
  display: block;
  width: 2px;
  height: 100%;
  background: var(--sky-accent);
  border-radius: 1px;
  animation: audio-bar 1s ease-in-out infinite alternate;
}

.audio-wave span:nth-child(2) { animation-delay: 0.2s; }
.audio-wave span:nth-child(3) { animation-delay: 0.4s; }
.audio-wave span:nth-child(4) { animation-delay: 0.1s; }

@keyframes audio-bar {
  0% { height: 25%; }
  100% { height: 100%; }
}

/* Center Stage: Speaker Orb + Timer Combined Row */
.drill-center-stage {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.1rem;
  padding: 0.25rem 0;
}

.speaker-orb {
  width: 62px;
  height: 62px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, rgba(56, 189, 248, 0.2), rgba(6, 182, 212, 0.05));
  border: 1px solid rgba(56, 189, 248, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--sky-accent);
  cursor: pointer;
  position: relative;
  transition: var(--transition-normal);
  flex-shrink: 0;
}

.speaker-orb:hover {
  transform: scale(1.05);
  border-color: var(--sky-accent);
  box-shadow: 0 0 20px var(--sky-glow);
}

.speaker-orb.speaking {
  border-color: var(--cyan-primary);
  box-shadow: 0 0 25px var(--cyan-glow);
  animation: orb-pulse-anim 1.5s infinite;
}

@keyframes orb-pulse-anim {
  0% { box-shadow: 0 0 10px var(--cyan-glow); }
  50% { box-shadow: 0 0 25px var(--cyan-glow), 0 0 45px rgba(6, 182, 212, 0.2); }
  100% { box-shadow: 0 0 10px var(--cyan-glow); }
}

/* Timer Section */
.timer-section {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.25rem;
  flex: 1;
  max-width: 230px;
}

.timer-display {
  display: flex;
  align-items: baseline;
  gap: 0.3rem;
}

.timer-val {
  font-family: var(--font-hud);
  font-size: 2.1rem;
  font-weight: 800;
  line-height: 1;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
  transition: color var(--transition-fast);
}

.timer-val.timer-critical {
  color: var(--rose-danger);
  animation: timer-pulse 0.5s infinite alternate;
}

@keyframes timer-pulse {
  from { transform: scale(1); }
  to { transform: scale(1.06); text-shadow: 0 0 12px var(--rose-glow); }
}

.timer-unit {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--text-muted);
}

.progress-bar-track {
  width: 100%;
  height: 7px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 9999px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--cyan-primary), var(--sky-accent));
  border-radius: 9999px;
  transition: width 0.1s linear, background-color var(--transition-fast);
}

.progress-bar-fill.fill-critical {
  background: var(--rose-danger);
  box-shadow: 0 0 10px var(--rose-glow);
}

/* Large Question & Answer Display */
.large-display-box {
  background: rgba(0, 0, 0, 0.55);
  border: 1px solid rgba(56, 189, 248, 0.4);
  border-radius: 12px;
  padding: 0.5rem 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
  box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.7), 0 0 15px rgba(56, 189, 248, 0.15);
  animation: fadeIn 0.2s ease;
}

.large-expr {
  font-family: var(--font-hud);
  font-size: 1.85rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: #ffffff;
  text-shadow: 0 0 14px rgba(56, 189, 248, 0.5);
}

.large-ans {
  font-family: var(--font-hud);
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--emerald-success);
  text-shadow: 0 0 16px var(--emerald-glow);
  animation: fadeIn 0.2s ease;
}

/* Debug Spoken Box */
.debug-question-box {
  background: rgba(0, 0, 0, 0.4);
  border: 1px dashed rgba(56, 189, 248, 0.35);
  border-radius: 6px;
  padding: 0.25rem 0.55rem;
  font-size: 0.72rem;
  display: flex;
  gap: 0.35rem;
  align-items: center;
}

.debug-label {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--sky-accent);
  font-size: 0.62rem;
}

.debug-text {
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

/* Quick Actions */
.drill-action-row {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
}

.action-pill-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 0.28rem 0.65rem;
  border-radius: 9999px;
  font-size: 0.72rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.action-pill-btn:hover {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border-color: var(--sky-accent);
}

.action-pill-btn.secondary {
  opacity: 0.85;
}

/* Input Section */
.input-section {
  width: 100%;
}

.input-wrapper {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 0.35rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 0.25rem 0.35rem;
  transition: var(--transition-fast);
}

.input-wrapper:focus-within {
  border-color: var(--sky-accent);
  box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.2);
}

.answer-input {
  background: transparent;
  border: none;
  outline: none;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  padding: 0.35rem 0.6rem;
  width: 100%;
}

.answer-input::placeholder {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 400;
  color: var(--text-muted);
}

.submit-btn {
  background: var(--sky-accent);
  color: #04101e;
  border: none;
  border-radius: 7px;
  padding: 0 0.9rem;
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-fast);
}

.submit-btn:hover {
  background: #7dd3fc;
  box-shadow: 0 0 12px rgba(56, 189, 248, 0.4);
}

.voice-btn {
  background: rgba(244, 63, 94, 0.12);
  border: 1px solid rgba(244, 63, 94, 0.3);
  color: var(--rose-danger);
  border-radius: 7px;
  padding: 0 0.75rem;
  font-size: 0.78rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: var(--transition-fast);
}

.voice-btn:hover {
  background: rgba(244, 63, 94, 0.2);
  border-color: var(--rose-danger);
}

.voice-btn.listening {
  background: var(--rose-danger);
  color: #ffffff;
  border-color: var(--rose-danger);
  box-shadow: var(--shadow-glow-rose);
}

.voice-btn.listening .mic-glow-ring {
  position: absolute;
  inset: 0;
  border-radius: 7px;
  border: 2px solid #ffffff;
  animation: ping 1.2s cubic-bezier(0, 0, 0.2, 1) infinite;
}

@keyframes ping {
  75%, 100% { transform: scale(1.4); opacity: 0; }
}

/* Live Mic Audio VU Meter & Diagnostic Speech Readout */
.live-speech-container {
  margin-top: 0.3rem;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: 7px;
  padding: 0.25rem 0.55rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.4);
}

.vu-meter {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 12px;
}

.vu-bar {
  width: 2.5px;
  height: 20%;
  background: var(--sky-accent);
  border-radius: 1px;
  transition: height 0.05s ease;
}

.vu-bar:nth-child(4), .vu-bar:nth-child(5) {
  background: var(--emerald-success);
}

.live-speech-content {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.74rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}

.live-tag {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 700;
  color: var(--sky-accent);
  letter-spacing: 0.06em;
}

.live-heard-text {
  color: #ffffff;
  font-family: var(--font-mono);
  font-weight: 600;
}

.live-parsed-text {
  color: var(--emerald-success);
  font-family: var(--font-mono);
  font-weight: 700;
  margin-left: auto;
  background: rgba(16, 185, 129, 0.15);
  padding: 0.05rem 0.35rem;
  border-radius: 4px;
}

/* Feedback Banner */
.feedback-banner {
  border-radius: 9px;
  padding: 0.45rem 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  border: 1px solid transparent;
  transition: var(--transition-normal);
}

.feedback-icon {
  font-size: 1rem;
  line-height: 1;
}

.feedback-content {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  overflow: hidden;
}

.feedback-title {
  font-weight: 700;
  font-size: 0.82rem;
  white-space: nowrap;
}

.feedback-subtitle {
  font-size: 0.74rem;
  color: var(--text-secondary);
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
}

.feedback-banner.idle {
  background: rgba(255, 255, 255, 0.03);
  border-color: var(--border-subtle);
  color: var(--text-muted);
}

.feedback-banner.correct {
  background: rgba(16, 185, 129, 0.12);
  border-color: rgba(16, 185, 129, 0.35);
  color: var(--emerald-success);
  box-shadow: 0 0 15px rgba(16, 185, 129, 0.15);
}

.feedback-banner.wrong {
  background: rgba(244, 63, 94, 0.12);
  border-color: rgba(244, 63, 94, 0.35);
  color: var(--rose-danger);
  animation: shake 0.3s cubic-bezier(0.36, 0.07, 0.19, 0.97) both;
}

.feedback-banner.timeout {
  background: rgba(245, 158, 11, 0.12);
  border-color: rgba(245, 158, 11, 0.35);
  color: var(--amber-warning);
}

.feedback-banner.listening {
  background: rgba(56, 189, 248, 0.12);
  border-color: rgba(56, 189, 248, 0.35);
  color: var(--sky-accent);
}

@keyframes shake {
  10%, 90% { transform: translate3d(-1px, 0, 0); }
  20%, 80% { transform: translate3d(2px, 0, 0); }
  30%, 50%, 70% { transform: translate3d(-3px, 0, 0); }
  40%, 60% { transform: translate3d(3px, 0, 0); }
}

/* Footer */
.app-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.1rem 0.2rem;
  font-size: 0.68rem;
  color: var(--text-muted);
}

.footer-shortcuts {
  display: flex;
  gap: 0.6rem;
}

kbd {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 3px;
  padding: 0.05rem 0.25rem;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  color: var(--text-secondary);
}

/* Utility */
.hidden {
  display: none !important;
}

/* Mobile & Small Screen Responsive Fallback */
@media (max-width: 820px), (max-height: 520px) {
  html, body {
    overflow-y: auto;
    height: auto;
    min-height: 100%;
  }

  .app-container {
    height: auto;
    max-height: none;
    padding: 0.75rem;
    gap: 0.75rem;
  }

  .app-header {
    flex-wrap: wrap;
  }

  .stats-bar {
    order: 3;
    width: 100%;
    justify-content: space-between;
  }

  .cockpit-workspace {
    grid-template-columns: 1fr;
  }
}