@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* --- MULTI-THEME CUSTOM VARIABLES (Apple UI Guidelines) --- */
body {
  /* Default: OLED Dark Theme */
  --bg-dark: #000000;
  --bg-card: rgba(22, 26, 33, 0.65);
  --bg-input: rgba(30, 36, 45, 0.5);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-active: rgba(0, 122, 255, 0.45);
  
  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  
  --accent-blue: #007AFF; /* iOS sapphire blue */
  --accent-blue-glow: rgba(0, 122, 255, 0.15);
  --accent-cyan: #38BDF8;
  --accent-amber: #FF9500; /* iOS amber */
  
  --success-emerald: #34C759; /* iOS system green */
  --success-bg: rgba(52, 199, 89, 0.08);
  --success-border: rgba(52, 199, 89, 0.2);
  
  --error-rose: #FF3B30; /* iOS system red */
  --error-bg: rgba(255, 59, 48, 0.08);
  --error-border: rgba(255, 59, 48, 0.2);
  
  --warning-bg: rgba(255, 149, 0, 0.08);
  --warning-border: rgba(255, 149, 0, 0.2);
  
  --keypad-bg: rgba(255, 255, 255, 0.05);
  --keypad-active-bg: rgba(255, 255, 255, 0.12);
  --keypad-panel-bg: #0A0A0F;
  --shadow-premium: 0 12px 40px -12px rgba(0, 0, 0, 0.85);
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  
  --transition-fast: 0.22s cubic-bezier(0.16, 1, 0.3, 1);

  /* Audited Theme-Specific Button and Keypad variables */
  --btn-neutral-bg: rgba(255, 255, 255, 0.05);
  --btn-neutral-border: rgba(255, 255, 255, 0.08);
  --keypad-btn-bg: rgba(255, 255, 255, 0.05);
  --keypad-btn-active-bg: rgba(255, 255, 255, 0.12);
  --keypad-btn-action-bg: rgba(255, 255, 255, 0.02);
  --keypad-btn-shadow: none;
}

body[data-theme="light"] {
  /* Apple Light Mode */
  --bg-dark: #F2F2F7; /* iOS system gray background */
  --bg-card: rgba(255, 255, 255, 0.7); /* translucent white */
  --bg-input: rgba(0, 0, 0, 0.03);
  --border-subtle: rgba(0, 0, 0, 0.07);
  --border-active: rgba(0, 122, 255, 0.4);
  
  /* Contrast Audit: Deepened grey values for perfect accessibility (WCAG AAA) on light cards */
  --text-primary: #1C1C1E; /* iOS dark text */
  --text-secondary: #48484A; /* iOS label dark gray (Improved from #8E8E93) */
  --text-muted: #68686E; /* iOS secondary dark label gray (Improved from #AEAEB2) */
  
  --accent-blue: #007AFF;
  --accent-cyan: #004F98;
  --accent-amber: #FF9500;
  
  --success-emerald: #34C759;
  --success-bg: rgba(52, 199, 89, 0.06);
  --success-border: rgba(52, 199, 89, 0.15);
  
  --error-rose: #FF3B30;
  --error-bg: rgba(255, 59, 48, 0.06);
  --error-border: rgba(255, 59, 48, 0.15);
  
  --warning-bg: rgba(255, 149, 0, 0.06);
  --warning-border: rgba(255, 149, 0, 0.15);
  
  --keypad-bg: rgba(0, 0, 0, 0.04);
  --keypad-active-bg: rgba(0, 0, 0, 0.1);
  --keypad-panel-bg: #E5E5EA; /* iOS keypad gray */
  --shadow-premium: 0 10px 30px -10px rgba(0, 0, 0, 0.05);

  /* Audited Theme-Specific Button and Keypad variables */
  --btn-neutral-bg: #E5E5EA; /* Solid iOS system gray secondary button */
  --btn-neutral-border: rgba(0, 0, 0, 0.04);
  --keypad-btn-bg: #FFFFFF; /* Brilliant solid white key (iOS keypad standard) */
  --keypad-btn-active-bg: #E5E5EA;
  --keypad-btn-action-bg: #D1D1D6;
  --keypad-btn-shadow: 0 1px 2px rgba(0, 0, 0, 0.06), 0 0.5px 0.5px rgba(0, 0, 0, 0.04);
}

body[data-theme="mono"] {
  /* Monochrome Minimalist Gray */
  --bg-dark: #121212;
  --bg-card: rgba(28, 28, 30, 0.75);
  --bg-input: rgba(255, 255, 255, 0.04);
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-active: rgba(255, 255, 255, 0.4);
  
  --text-primary: #F3F4F6;
  --text-secondary: #9CA3AF;
  --text-muted: #6B7280;
  
  --accent-blue: #FFFFFF; /* Stark white */
  --accent-cyan: #D1D5DB;
  --accent-amber: #9CA3AF;
  
  --success-emerald: #E5E7EB;
  --success-bg: rgba(255, 255, 255, 0.04);
  --success-border: rgba(255, 255, 255, 0.15);
  
  --error-rose: #374151;
  --error-bg: rgba(255, 255, 255, 0.02);
  --error-border: rgba(255, 255, 255, 0.08);
  
  --warning-bg: rgba(255, 255, 255, 0.03);
  --warning-border: rgba(255, 255, 255, 0.1);
  
  --keypad-bg: rgba(255, 255, 255, 0.04);
  --keypad-active-bg: rgba(255, 255, 255, 0.12);
  --keypad-panel-bg: #1C1C1E;
  --shadow-premium: 0 12px 40px -12px rgba(0, 0, 0, 0.8);

  /* Audited Theme-Specific Button and Keypad variables */
  --btn-neutral-bg: rgba(255, 255, 255, 0.05);
  --btn-neutral-border: rgba(255, 255, 255, 0.06);
  --keypad-btn-bg: rgba(255, 255, 255, 0.05);
  --keypad-btn-active-bg: rgba(255, 255, 255, 0.12);
  --keypad-btn-action-bg: rgba(255, 255, 255, 0.02);
}

body[data-theme="sage"] {
  /* Nordic Forest Sage Green */
  --bg-dark: #121815; /* Slate sage */
  --bg-card: rgba(24, 32, 28, 0.7);
  --bg-input: rgba(255, 255, 255, 0.03);
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-active: rgba(52, 199, 89, 0.4);
  
  /* Contrast Audit: Brighten sage typography for readability on slate sage backdrops */
  --text-primary: #ECFDF5;
  --text-secondary: #B0C4B8; /* Improved from #94A89C */
  --text-muted: #7E9386; /* Improved from #687970 */
  
  --accent-blue: #30D158; /* Apple green */
  --accent-cyan: #30B0C7;
  --accent-amber: #FF9500;
  
  --success-emerald: #30D158;
  --success-bg: rgba(48, 209, 88, 0.08);
  --success-border: rgba(48, 209, 88, 0.18);
  
  --error-rose: #FF453A;
  --error-bg: rgba(255, 69, 58, 0.08);
  --error-border: rgba(255, 69, 58, 0.18);
  
  --warning-bg: rgba(255, 149, 0, 0.08);
  --warning-border: rgba(255, 149, 0, 0.18);
  
  --keypad-bg: rgba(255, 255, 255, 0.03);
  --keypad-active-bg: rgba(255, 255, 255, 0.1);
  --keypad-panel-bg: #0C110F;
  --shadow-premium: 0 12px 40px -12px rgba(0, 0, 0, 0.85);

  /* Audited Theme-Specific Button and Keypad variables */
  --btn-neutral-bg: rgba(24, 32, 28, 0.6);
  --btn-neutral-border: rgba(255, 255, 255, 0.05);
  --keypad-btn-bg: rgba(24, 32, 28, 0.6);
  --keypad-btn-active-bg: rgba(255, 255, 255, 0.1);
  --keypad-btn-action-bg: rgba(24, 32, 28, 0.3);
}

body[data-theme="warm"] {
  /* Warm Minimalist Sand */
  --bg-dark: #FAF5EE; /* Cozy Sand */
  --bg-card: rgba(255, 255, 255, 0.65);
  --bg-input: rgba(0, 0, 0, 0.03);
  --border-subtle: rgba(140, 115, 95, 0.1);
  --border-active: rgba(217, 119, 6, 0.4);
  
  /* Contrast Audit: Deep warm stone cocoa shades for absolute legibility */
  --text-primary: #292524; /* Cocoa */
  --text-secondary: #44403C; /* Dark Stone (Improved from #78716C) */
  --text-muted: #6B6661; /* Medium Stone (Improved from #A8A29E) */
  
  --accent-blue: #D97706; /* Terracotta */
  --accent-cyan: #4F46E5;
  --accent-amber: #D97706;
  
  --success-emerald: #D97706;
  --success-bg: rgba(217, 119, 6, 0.05);
  --success-border: rgba(217, 119, 6, 0.15);
  
  --error-rose: #9A3412;
  --error-bg: rgba(154, 52, 18, 0.05);
  --error-border: rgba(154, 52, 18, 0.15);
  
  --warning-bg: rgba(217, 119, 6, 0.05);
  --warning-border: rgba(217, 119, 6, 0.15);
  
  --keypad-bg: rgba(0, 0, 0, 0.04);
  --keypad-active-bg: rgba(0, 0, 0, 0.08);
  --keypad-panel-bg: #EFE9DE;
  --shadow-premium: 0 10px 30px -10px rgba(100, 80, 60, 0.05);

  /* Audited Theme-Specific Button and Keypad variables */
  --btn-neutral-bg: #EFE9DE; /* Solid Sand button */
  --btn-neutral-border: rgba(140, 115, 95, 0.15);
  --keypad-btn-bg: #FFFFFF; /* Crisp solid white key on sand tray */
  --keypad-btn-active-bg: #EFE9DE;
  --keypad-btn-action-bg: #E5DEC9;
  --keypad-btn-shadow: 0 1px 2px rgba(140, 115, 95, 0.08), 0 0.5px 0.5px rgba(140, 115, 95, 0.04);
}

/* --- RESET & TRANSITIONS --- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
  -webkit-user-select: none;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-primary);
  font-family: var(--font-sans);
  height: 100vh;
  height: -webkit-fill-available;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

/* --- MOBILE FRAME --- */
.terminal-frame {
  width: 100%;
  max-width: 440px;
  height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-dark);
  position: relative;
  overflow: hidden;
  border-left: 1px solid var(--border-subtle);
  border-right: 1px solid var(--border-subtle);
  box-shadow: 0 0 50px rgba(0, 0, 0, 0.8);
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

/* --- FIXED HEADER --- */
.dashboard-header {
  flex-shrink: 0;
  padding: 24px 20px 16px 20px;
  background-color: var(--bg-dark);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 14px;
  z-index: 10;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.dashboard-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.system-title {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.2px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.system-title::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--accent-blue);
  box-shadow: 0 0 8px var(--accent-blue);
  transition: background-color var(--transition-fast);
}

.telemetry-value.accent {
  color: var(--accent-blue);
  font-weight: 700;
  font-size: 0.85rem;
  background: rgba(0, 122, 255, 0.1);
  padding: 4px 10px;
  border-radius: 30px;
  transition: color var(--transition-fast), background var(--transition-fast);
}

body[data-theme="light"] .telemetry-value.accent {
  background: rgba(0, 122, 255, 0.08);
}

body[data-theme="mono"] .telemetry-value.accent {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
}

body[data-theme="sage"] .telemetry-value.accent {
  background: rgba(48, 209, 88, 0.1);
}

body[data-theme="warm"] .telemetry-value.accent {
  background: rgba(217, 119, 6, 0.08);
}

/* Telemetry Grid */
.telemetry-grid {
  background-color: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 12px;
}

body[data-theme="light"] .telemetry-grid {
  background-color: rgba(0, 0, 0, 0.015);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  width: 100%;
}

.telemetry-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
}

.telemetry-item:not(:last-child)::after {
  content: "";
  position: absolute;
  right: -4px;
  top: 25%;
  height: 50%;
  width: 1px;
  background-color: var(--border-subtle);
}

.telemetry-label {
  font-size: 0.58rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  margin-bottom: 3px;
}

.telemetry-value {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.streak-chevrons {
  display: flex;
  gap: 3px;
  margin-top: 4px;
}

.chevron {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.15);
  transition: background-color var(--transition-fast);
}

body[data-theme="light"] .chevron {
  background-color: rgba(0, 0, 0, 0.1);
}

.chevron.active {
  background-color: var(--success-emerald);
}

/* --- THEME TOGGLE ELEMENT --- */
.theme-toggle-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.theme-toggle-btn:hover, .theme-toggle-btn:active {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

body[data-theme="light"] .theme-toggle-btn:hover,
body[data-theme="light"] .theme-toggle-btn:active {
  background-color: rgba(0, 0, 0, 0.04);
}

.theme-selector-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.4);
  z-index: 100;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  animation: fadeIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.theme-selector-card {
  width: 100%;
  background-color: var(--bg-card);
  border-top: 1px solid var(--border-subtle);
  border-top-left-radius: 24px;
  border-top-right-radius: 24px;
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.5);
  animation: slideUp 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
}

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

.theme-selector-header span {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.theme-close-btn {
  background: transparent;
  border: none;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
}

.theme-options-grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.theme-opt-btn {
  background-color: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  width: 100%;
  transition: all var(--transition-fast);
}

body[data-theme="light"] .theme-opt-btn {
  background-color: rgba(0, 0, 0, 0.015);
}

.theme-opt-btn:active {
  transform: scale(0.98);
}

.theme-opt-btn.active {
  border-color: var(--accent-blue);
  background-color: rgba(0, 122, 255, 0.05);
}

body[data-theme="mono"] .theme-opt-btn.active {
  border-color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.06);
}

body[data-theme="sage"] .theme-opt-btn.active {
  border-color: var(--accent-blue);
  background-color: rgba(48, 209, 88, 0.06);
}

body[data-theme="warm"] .theme-opt-btn.active {
  border-color: var(--accent-blue);
  background-color: rgba(217, 119, 6, 0.05);
}

.theme-opt-indicator {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: inline-block;
}

.theme-opt-label {
  flex-grow: 1;
  text-align: left;
}

/* --- VIEWPORT ENGINE --- */
.viewport-content {
  flex-grow: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 20px;
  display: flex;
  flex-direction: column;
  position: relative;
  height: 60%;
  transition: background-color 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.screen-container {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  opacity: 0;
  pointer-events: none;
  position: absolute;
  top: 20px;
  left: 20px;
  right: 20px;
  bottom: 20px;
  transition: opacity 0.22s cubic-bezier(0.16, 1, 0.3, 1), transform 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  transform: scale(0.98) translateY(6px);
}

.screen-container.active {
  opacity: 1;
  pointer-events: auto;
  position: relative;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  transform: scale(1) translateY(0);
}

.screen-glow-success {
  background-color: rgba(52, 199, 89, 0.05) !important;
  box-shadow: inset 0 0 30px rgba(52, 199, 89, 0.12) !important;
}

.screen-glow-error {
  background-color: rgba(255, 59, 48, 0.05) !important;
  box-shadow: inset 0 0 30px rgba(255, 59, 48, 0.12) !important;
}

.screen-glow-warning {
  background-color: rgba(255, 149, 0, 0.05) !important;
  box-shadow: inset 0 0 30px rgba(255, 149, 0, 0.12) !important;
}

/* --- CARDS (GLASSMORPHISM) --- */
.terminal-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 16px;
  position: relative;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-premium);
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.terminal-card-header {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle);
}

.terminal-card-header .type-tag {
  font-weight: 600;
  color: var(--accent-blue);
  background-color: rgba(0, 122, 255, 0.1);
  padding: 3px 10px;
  border-radius: 30px;
  font-size: 0.62rem;
  text-transform: uppercase;
  transition: color var(--transition-fast), background var(--transition-fast);
}

body[data-theme="mono"] .terminal-card-header .type-tag {
  color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.1);
}

body[data-theme="sage"] .terminal-card-header .type-tag {
  color: var(--accent-blue);
  background-color: rgba(48, 209, 88, 0.1);
}

body[data-theme="warm"] .terminal-card-header .type-tag {
  color: var(--accent-blue);
  background-color: rgba(217, 119, 6, 0.08);
}

/* --- STUDY TIMER BAR --- */
.timer-container {
  width: 100%;
  height: 5px;
  background-color: rgba(255, 255, 255, 0.06);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 16px;
}

body[data-theme="light"] .timer-container {
  background-color: rgba(0, 0, 0, 0.06);
}

.timer-bar {
  height: 100%;
  width: 100%;
  background-color: var(--accent-blue);
  border-radius: 10px;
  transition: width 0.1s linear, background-color var(--transition-fast);
}

/* --- BUTTONS (Apple capsule/pill design) --- */
.btn {
  font-family: var(--font-sans);
  background: var(--btn-neutral-bg);
  color: var(--text-primary);
  border: 1px solid var(--btn-neutral-border);
  border-radius: 30px; /* Perfect pill buttons */
  padding: 14px 24px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  outline: none;
  min-height: 52px;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  transition: all var(--transition-fast);
}

/* --- ABORT BUTTON (Apple styling) --- */
.abort-btn {
  font-family: var(--font-sans);
  background-color: var(--error-bg);
  color: var(--error-rose);
  border: 1px solid var(--error-border);
  border-radius: 16px;
  padding: 5px 12px;
  font-size: 0.68rem;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: 0.5px;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-transform: uppercase;
}

.abort-btn:hover {
  background-color: var(--error-rose);
  color: #FFFFFF;
  border-color: transparent;
}

.abort-btn:active {
  transform: scale(0.95);
}

.btn:active {
  transform: scale(0.97);
  opacity: 0.88;
}

.btn-primary {
  background-color: var(--accent-blue);
  border-color: transparent;
  color: #FFFFFF;
}

.btn-primary:active {
  background-color: #0056D2;
}

body[data-theme="mono"] .btn-primary {
  background-color: var(--text-primary);
  color: var(--bg-dark);
}

body[data-theme="mono"] .btn-primary:active {
  background-color: var(--text-secondary);
}

.btn-success {
  background-color: var(--success-emerald);
  border-color: transparent;
  color: #FFFFFF;
}

.btn-success:active {
  background-color: #248A3D;
}

body[data-theme="mono"] .btn-success {
  background-color: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

.btn-danger {
  background-color: var(--error-rose);
  border-color: transparent;
  color: #FFFFFF;
}

.btn-danger:active {
  background-color: #D6251C;
}

.btn-block {
  width: 100%;
}

/* --- INSTRUMENT SCANNING --- */
.gauges-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  width: 100%;
}

.gauge-card {
  background-color: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  transition: all var(--transition-fast);
}

body[data-theme="light"] .gauge-card {
  background-color: rgba(0, 0, 0, 0.01);
}

.gauge-value-display {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 6px 0;
  letter-spacing: -0.5px;
  text-align: center;
}

.gauge-card.active-step {
  border-color: var(--accent-blue);
  background-color: rgba(0, 122, 255, 0.05);
}

body[data-theme="mono"] .gauge-card.active-step {
  border-color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.04);
}

.gauge-card.blanked .gauge-value-display {
  color: var(--text-muted);
}

.gauge-card.blanked.active-step .gauge-value-display {
  color: var(--accent-blue);
}

body[data-theme="mono"] .gauge-card.blanked.active-step .gauge-value-display {
  color: var(--text-primary);
}

/* --- CHECKLIST MODULES --- */
.checklist-slots-container {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}

.checklist-slot {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  height: 48px;
  display: flex;
  align-items: center;
  padding: 0 16px;
  position: relative;
  background-color: rgba(255, 255, 255, 0.01);
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

body[data-theme="light"] .checklist-slot {
  background-color: rgba(0, 0, 0, 0.01);
}

.checklist-slot-index {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent-blue);
  width: 28px;
  transition: color var(--transition-fast);
}

body[data-theme="mono"] .checklist-slot-index {
  color: var(--text-primary);
}

.checklist-slot-content {
  flex-grow: 1;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-primary);
}

.sortable-item {
  background-color: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  touch-action: none;
  min-height: 48px;
  transition: all var(--transition-fast);
}

.sortable-item:active {
  border-color: var(--accent-blue);
  background-color: rgba(0, 122, 255, 0.08);
}

body[data-theme="mono"] .sortable-item:active {
  border-color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.06);
}

.pool-container {
  border-top: 1px solid var(--border-subtle);
  padding-top: 16px;
  margin-top: 16px;
}

.pool-title {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.pool-items {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* --- ATC DISPLAYS --- */
.atc-telemetry-display {
  background-color: rgba(255, 255, 255, 0.015);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  font-size: 0.88rem;
  font-weight: 500;
  line-height: 1.5;
  color: var(--text-primary);
  margin-bottom: 16px;
  text-align: center;
  word-wrap: break-word;
  white-space: pre-wrap;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

body[data-theme="light"] .atc-telemetry-display {
  background-color: rgba(0, 0, 0, 0.01);
}

.atc-inputs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.atc-input-wrapper {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.atc-input-label {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.input-terminal {
  background-color: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  outline: none;
  min-height: 48px;
  width: 100%;
  text-align: center;
  transition: all var(--transition-fast);
}

.input-terminal:focus, .input-terminal.active-input {
  border-color: var(--accent-blue);
  background-color: rgba(0, 122, 255, 0.05);
}

body[data-theme="mono"] .input-terminal:focus,
body[data-theme="mono"] .input-terminal.active-input {
  border-color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.04);
}

/* --- emergency DIAGNOSTICS --- */
.fault-chain-flow {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}

.fault-step-node {
  border: 1px solid var(--border-subtle);
  background-color: rgba(255, 255, 255, 0.01);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-fast);
  cursor: pointer;
}

body[data-theme="light"] .fault-step-node {
  background-color: rgba(0, 0, 0, 0.005);
}

.fault-step-node.active-step {
  border-color: var(--accent-blue);
  background-color: rgba(0, 122, 255, 0.05);
}

body[data-theme="mono"] .fault-step-node.active-step {
  border-color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.04);
}

.fault-step-title {
  font-size: 0.62rem;
  font-weight: 700;
  color: var(--accent-cyan);
  text-transform: uppercase;
  margin-bottom: 4px;
  letter-spacing: 0.5px;
  transition: color var(--transition-fast);
}

body[data-theme="mono"] .fault-step-title {
  color: var(--text-secondary);
}

.fault-step-content {
  font-size: 0.8rem;
  font-weight: 500;
  min-height: 20px;
}

/* --- APPLE STYLE KEYPAD --- */
.custom-keypad-panel {
  background-color: var(--keypad-panel-bg);
  border-top: 1px solid var(--border-subtle);
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 10;
  box-shadow: 0 -8px 30px rgba(0, 0, 0, 0.5);
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

body[data-theme="light"] .custom-keypad-panel {
  box-shadow: 0 -8px 30px rgba(0, 0, 0, 0.02);
}

.keypad-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: rgba(255, 255, 255, 0.02);
  padding: 6px 12px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  margin-bottom: 2px;
}

body[data-theme="light"] .keypad-header-row {
  background-color: rgba(0, 0, 0, 0.02);
}

.keypad-header-label {
  font-size: 0.62rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.keypad-header-value {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent-cyan);
  transition: color var(--transition-fast);
}

body[data-theme="mono"] .keypad-header-value {
  color: var(--text-primary);
}

.keypad-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.keypad-btn {
  background-color: var(--keypad-btn-bg);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 1.15rem;
  font-weight: 500;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 48px;
  cursor: pointer;
  box-shadow: var(--keypad-btn-shadow);
  transition: background-color 0.1s ease, transform 0.05s ease, border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
}

.keypad-btn:active {
  background-color: var(--keypad-btn-active-bg);
  transform: scale(0.96);
  box-shadow: none;
}

.keypad-btn.action {
  font-size: 0.75rem;
  font-weight: 700;
  background-color: var(--keypad-btn-action-bg);
  border: 1px solid var(--border-subtle);
}

.keypad-btn.action.enter {
  background-color: var(--accent-blue);
  color: #FFFFFF;
  border: none;
}

body[data-theme="mono"] .keypad-btn.action.enter {
  background-color: var(--text-primary);
  color: var(--bg-dark);
}

.keypad-btn.action.enter:active {
  background-color: #0056B3;
}

body[data-theme="mono"] .keypad-btn.action.enter:active {
  background-color: var(--text-secondary);
}

/* --- FEEDBACK LOGGING --- */
.feedback-details {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.feedback-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 14px;
  background-color: rgba(255, 255, 255, 0.02);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.feedback-row.correct {
  border-color: var(--success-border);
  background-color: var(--success-bg);
}

.feedback-row.incorrect {
  border-color: var(--error-border);
  background-color: var(--error-bg);
}

.feedback-field {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.feedback-values {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  font-weight: 600;
}

.val-expected {
  color: var(--success-emerald);
}

.val-input {
  color: var(--text-primary);
}

.val-input.error {
  color: var(--error-rose);
  text-decoration: line-through;
}

/* --- DEBRIEFING PANELS --- */
.debrief-score-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 24px;
  border-radius: var(--radius-lg);
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  margin-bottom: 16px;
  text-align: center;
  box-shadow: var(--shadow-premium);
}

.debrief-rating {
  font-size: 1.1rem;
  font-weight: 800;
  text-transform: uppercase;
  margin-top: 8px;
  letter-spacing: 0.8px;
}

.debrief-rating.proficient { color: var(--success-emerald); }
.debrief-rating.satisfactory { color: var(--accent-blue); }
.debrief-rating.remedial { color: var(--accent-amber); }
.debrief-rating.warning { color: var(--accent-amber); }
.debrief-rating.unacceptable { color: var(--error-rose); }

.debrief-table-container {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background-color: var(--bg-card);
  margin-bottom: 16px;
  overflow: hidden;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.debrief-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.75rem;
}

.debrief-table th, .debrief-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
}

.debrief-table th {
  background-color: rgba(255, 255, 255, 0.02);
  color: var(--text-muted);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

body[data-theme="light"] .debrief-table th {
  background-color: rgba(0, 0, 0, 0.015);
}

.debrief-table tr.incorrect-row {
  background-color: rgba(255, 59, 48, 0.02);
}

body[data-theme="light"] .debrief-table tr.incorrect-row {
  background-color: rgba(255, 59, 48, 0.015);
}

.debrief-table tr.incorrect-row td {
  color: var(--error-rose);
}

.debrief-table tr.warning-row {
  background-color: rgba(255, 149, 0, 0.02);
}

body[data-theme="light"] .debrief-table tr.warning-row {
  background-color: rgba(255, 149, 0, 0.015);
}

.debrief-table tr.warning-row td {
  color: var(--accent-amber);
}

.blindspot-log {
  border: 1px solid var(--error-border);
  background-color: var(--error-bg);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  margin-bottom: 16px;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.blindspot-title {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--error-rose);
  margin-bottom: 6px;
  letter-spacing: 0.2px;
}

.blindspot-list {
  list-style-type: none;
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--text-primary);
}

.blindspot-list li::before {
  content: "•";
  color: var(--error-rose);
  display: inline-block;
  width: 12px;
  font-weight: bold;
}

/* --- HISTORICAL SPARKLINE CHART --- */
.history-chart-wrapper {
  height: 95px;
  margin-top: 12px;
  border-top: 1px solid var(--border-subtle);
  padding-top: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* --- HOME STATS PANEL --- */
.home-stats-summary {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}

.home-stat-box {
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  padding: 14px;
  border-radius: var(--radius-md);
  text-align: center;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.home-stat-num {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--accent-blue);
  letter-spacing: -0.3px;
  transition: color var(--transition-fast);
}

body[data-theme="mono"] .home-stat-num {
  color: var(--text-primary);
}

.home-stat-label {
  font-size: 0.58rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-top: 4px;
  letter-spacing: 0.5px;
}

/* --- SCROLLBAR CUSTOMIZATION --- */
.viewport-content::-webkit-scrollbar {
  width: 4px;
}
.viewport-content::-webkit-scrollbar-track {
  background: transparent;
}
.viewport-content::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 10px;
}

body[data-theme="light"] .viewport-content::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.08);
}

/* --- DESKTOP SIDEBAR --- */
.desktop-sidebar {
  display: none;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-6px); }
  40%, 80% { transform: translateX(6px); }
}

.shake {
  animation: shake 0.3s cubic-bezier(0.36, 0.07, 0.19, 0.97) both;
}

/* --- RESPONSIVE MEDIA GRID FOR DESKTOP & TABLET --- */
@media (min-width: 680px) {
  body {
    padding: 20px;
    align-items: center;
    justify-content: center;
  }
  
  .terminal-frame {
    max-width: 900px;
    height: 680px; /* increased from 640px for perfect desktop card spacing */
    display: grid;
    grid-template-columns: 1.35fr 0.82fr;
    grid-template-rows: auto 1fr;
    grid-template-areas:
      "header header"
      "viewport sidebar";
    border: 1px solid var(--border-subtle);
    border-radius: 24px;
    margin: auto;
    overflow: hidden;
    box-shadow: var(--shadow-premium);
  }
  
  .dashboard-header {
    grid-area: header;
  }
  
  .viewport-content {
    grid-area: viewport;
    border-right: 1px solid var(--border-subtle);
    overflow-y: auto;
  }
  
  .desktop-sidebar {
    grid-area: sidebar;
    display: flex;
    flex-direction: column;
    padding: 20px;
    overflow-y: auto;
    gap: 14px;
    background-color: transparent;
  }
  
  .custom-keypad-panel {
    grid-area: sidebar;
    border-top: none;
    background-color: var(--keypad-panel-bg) !important;
    padding: 20px;
    z-index: 20;
    height: 100%;
    width: 100%;
    box-shadow: none;
    animation: fadeIn var(--transition-fast);
  }
  
  .theme-selector-overlay {
    align-items: center;
  }
  
  .theme-selector-card {
    max-width: 360px;
    border-radius: 24px;
    border: 1px solid var(--border-subtle);
    border-top-left-radius: 24px;
    border-top-right-radius: 24px;
  }
}

/* --- MODULE SELECTION CARDS --- */
.module-select-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border: 1px solid var(--border-subtle);
  background-color: rgba(255, 255, 255, 0.01);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

body[data-theme="light"] .module-select-card {
  background-color: rgba(0, 0, 0, 0.01);
}

.module-select-card:active {
  transform: scale(0.97);
}

.module-select-card .select-indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--text-muted);
  transition: background-color var(--transition-fast), box-shadow var(--transition-fast);
}

.module-select-card.active {
  border-color: var(--accent-blue);
  background-color: rgba(0, 122, 255, 0.06);
}

body[data-theme="mono"] .module-select-card.active {
  border-color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.06);
}

body[data-theme="sage"] .module-select-card.active {
  border-color: var(--accent-blue);
  background-color: rgba(48, 209, 88, 0.06);
}

body[data-theme="warm"] .module-select-card.active {
  border-color: var(--accent-blue);
  background-color: rgba(217, 119, 6, 0.05);
}

.module-select-card.active .select-indicator {
  background-color: var(--accent-blue);
  box-shadow: 0 0 6px var(--accent-blue);
}

body[data-theme="mono"] .module-select-card.active .select-indicator {
  background-color: var(--text-primary);
  box-shadow: 0 0 6px var(--text-primary);
}