/* ==========================================================================
   CONTROLDECK MOBILE — STRICT MONOCHROME STYLESHEET
   ========================================================================== */

:root {
  --bg-color: #050505;
  --surface-primary: #0D0D0D;
  --surface-secondary: #151515;
  --surface-hover: #222222;
  --border-color: #292929;
  --border-light: #444444;
  --text-primary: #FFFFFF;
  --text-secondary: #A0A0A0;
  --text-muted: #666666;
  --font-sans: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
  --font-mono: 'Consolas', 'Courier New', monospace;
  --safe-area-top: max(env(safe-area-inset-top, 0px), 32px);
  --safe-area-bottom: max(env(safe-area-inset-bottom, 0px), 8px);
  --header-height: calc(48px + var(--safe-area-top));
  --nav-height: calc(56px + var(--safe-area-bottom));
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.4;
  overflow-x: hidden;
  height: 100vh;
  width: 100vw;
  display: flex;
  flex-direction: column;
}

/* Header Bar */
.header-bar {
  height: var(--header-height);
  padding-top: var(--safe-area-top);
  background-color: var(--surface-primary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-left: max(16px, env(safe-area-inset-left, 16px));
  padding-right: max(16px, env(safe-area-inset-right, 16px));
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
}

.brand-title {
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-primary);
}

.conn-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  padding: 4px 8px;
  border: 1px solid var(--border-color);
  background-color: var(--surface-secondary);
  border-radius: 2px;
  color: var(--text-secondary);
  cursor: pointer;
}

/* Main Content Area */
.main-content {
  flex: 1;
  margin-top: var(--header-height);
  margin-bottom: var(--nav-height);
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  -webkit-overflow-scrolling: touch;
}

/* Bottom Navigation */
.nav-bar {
  height: var(--nav-height);
  padding-bottom: var(--safe-area-bottom);
  background-color: var(--surface-primary);
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-around;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px 12px;
  min-width: 54px;
}

.nav-item.active {
  color: var(--text-primary);
  border-bottom: 2px solid var(--text-primary);
}

.nav-icon {
  font-size: 16px;
}

/* Panels & Cards */
.panel {
  background-color: var(--surface-primary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

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

.panel-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-secondary);
}

/* Sub-Navigation Pills */
.sub-nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  -webkit-overflow-scrolling: touch;
}

.sub-pill {
  background-color: var(--surface-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 2px;
  white-space: nowrap;
  cursor: pointer;
  background: none;
}

.sub-pill.active {
  background-color: var(--text-primary);
  color: #000000;
  border-color: var(--text-primary);
}

/* Telemetry Grid */
.telemetry-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.telemetry-card {
  background-color: var(--surface-secondary);
  border: 1px solid var(--border-color);
  padding: 12px;
  border-radius: 2px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stat-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--text-muted);
  text-transform: uppercase;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 800;
  color: var(--text-primary);
}

.stat-sub {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-secondary);
}

/* Progress Bar */
.progress-track {
  height: 4px;
  background-color: var(--surface-primary);
  border-radius: 2px;
  overflow: hidden;
  will-change: transform;
}

.progress-fill {
  height: 100%;
  background-color: var(--text-primary);
  width: 0%;
  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: width;
  transform: translateZ(0);
}

/* Buttons */
.btn {
  background-color: var(--surface-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 12px 16px;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  border-radius: 2px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  transition: transform 0.15s cubic-bezier(0.2, 0.8, 0.2, 1), background-color 0.15s ease, border-color 0.15s ease, opacity 0.15s ease;
  will-change: transform;
  transform: translateZ(0);
  backface-visibility: hidden;
}

.btn:active {
  background-color: var(--surface-hover);
  border-color: var(--text-primary);
  transform: scale(0.96) translateZ(0);
}

.btn-primary {
  background-color: var(--text-primary);
  color: #000000;
  border-color: var(--text-primary);
}

.btn-danger {
  background-color: #1A0D0D;
  border-color: #442222;
  color: #FFFFFF;
}

.btn-small {
  padding: 6px 12px;
  min-height: 32px;
  font-size: 11px;
}

/* Inputs */
.input-field {
  background-color: var(--surface-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  border-radius: 2px;
  width: 100%;
}

.input-field:focus {
  outline: none;
  border-color: var(--text-primary);
}

/* Main Content Area */
.main-content {
  flex: 1;
  margin-top: var(--header-height);
  margin-bottom: var(--nav-height);
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  -webkit-overflow-scrolling: touch;
  animation: pageFadeIn 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
  will-change: transform, opacity;
  transform: translateZ(0);
}

@keyframes pageFadeIn {
  from {
    opacity: 0.7;
    transform: translateY(4px) translateZ(0);
  }
  to {
    opacity: 1;
    transform: translateY(0) translateZ(0);
  }
}

/* QuickDeck Grid */
.deck-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.deck-tile {
  background-color: var(--surface-secondary);
  border: 1px solid var(--border-color);
  padding: 16px;
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 100px;
  cursor: pointer;
  text-align: center;
  transition: transform 0.15s cubic-bezier(0.2, 0.8, 0.2, 1), background-color 0.15s ease, border-color 0.15s ease;
  will-change: transform;
  transform: translateZ(0);
  backface-visibility: hidden;
}

.deck-tile:active {
  background-color: var(--text-primary);
  color: #000000;
  transform: scale(0.95) translateZ(0);
}

.deck-tile:active .tile-sub {
  color: #333333;
}

.tile-icon {
  font-size: 24px;
}

.tile-title {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 1px;
}

.tile-sub {
  font-size: 10px;
  color: var(--text-muted);
}

/* List Items (Process, App, Service) */
.item-card {
  background-color: var(--surface-secondary);
  border: 1px solid var(--border-color);
  padding: 12px;
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.item-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.item-title {
  font-size: 13px;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--text-primary);
}

.item-sub {
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--text-secondary);
}

/* Sliders */
.range-slider {
  width: 100%;
  -webkit-appearance: none;
  background: var(--surface-secondary);
  height: 8px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  outline: none;
}

.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  background: var(--text-primary);
  border-radius: 50%;
  cursor: pointer;
}

/* Modal Overlay */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  z-index: 200;
}

.modal-card {
  background-color: var(--surface-primary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 20px;
  width: 100%;
  max-width: 400px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  top: calc(var(--header-height) + 12px);
  left: 16px;
  right: 16px;
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  background-color: var(--surface-secondary);
  border: 1px solid var(--text-primary);
  color: var(--text-primary);
  padding: 12px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.5px;
  border-radius: 2px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
  pointer-events: auto;
}

/* Volume Quick Step Button Grid */
.vol-button-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  margin-top: 8px;
  width: 100%;
}

.vol-button-row .btn-small {
  padding: 6px 2px;
  font-size: 11px;
  min-height: 36px;
  text-align: center;
  white-space: nowrap;
}

/* Responsive Grid Adaptations for Tablets */
@media (min-width: 600px) {
  .telemetry-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .deck-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}