/* ==========================================================================
   1. VARIABLES & RESET
   ========================================================================== */
:root {
  /* Base Theme Palette (Catppuccin Macchiato/Mocha) */
  --bg-main: #11111b;
  --bg-surface: #181825;
  --bg-card: #1e1e2e;
  --border-subtle: #313244;
  --border-strong: #45475a;
  
  /* Text Colors */
  --text-main: #cdd6f4;
  --text-sub: #a6adc8;
  --text-dim: #6c7086;
  --text-dark: #11111b;

  /* Accent Colors */
  --accent-purple: #cba6f7;
  --accent-blue: #89b4fa;
  --accent-green: #a6e3a1;
  --accent-peach: #fab387;
  --accent-yellow: #f9e2af;
  --accent-red: #f38ba8;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ==========================================================================
   2. LAYOUT & HEADER
   ========================================================================== */
.app-header {
  height: 56px;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-left, 
.header-right {
  display: flex;
  align-items: center;
  width: 110px;
}

.header-right {
  justify-content: flex-end;
}

.header-center {
  flex: 1;
  text-align: center;
}

.app-title {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--accent-purple);
  letter-spacing: 0.5px;
}

.app-content {
  flex: 1;
  padding: 14px;
  max-width: 800px;
  width: 100%;
  margin: 0 auto;
}

.page-view {
  display: none;
}

.page-view.active {
  display: block;
}

/* ==========================================================================
   3. BUTTONS & CONTROLS
   ========================================================================== */
.btn {
  padding: 8px 14px;
  border-radius: 8px;
  border: none;
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

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

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Button Variants */
.btn-connect {
  background-color: var(--accent-blue);
  color: var(--text-dark);
}

.btn-connect.connected {
  background-color: var(--accent-green);
  color: var(--text-dark);
}

.btn-primary { 
  background-color: var(--accent-blue); 
  color: var(--text-dark); 
}

.btn-action-success {
  background-color: var(--accent-green);
  color: var(--text-dark);
  font-weight: 700;
}

.btn-action-danger {
  background-color: var(--accent-red);
  color: var(--text-dark);
  font-weight: 700;
}

.btn-action-active {
  background-color: var(--accent-red);
  color: var(--text-dark);
}

.btn-accent-fill {
  background-color: var(--accent-peach);
  color: var(--text-dark);
}

.btn-danger-outline {
  background: transparent;
  border: 1px solid var(--accent-red);
  color: var(--accent-red);
}

.btn-small {
  padding: 4px 10px;
  font-size: 0.75rem;
  background-color: var(--border-subtle);
  color: var(--text-main);
  border-radius: 6px;
}

.btn-play {
  background-color: var(--accent-green);
  color: var(--text-dark);
  padding: 6px 12px;
  font-size: 0.8rem;
  border-radius: 6px;
  font-weight: 700;
}

.btn-menu-icon {
  background: transparent;
  border: none;
  color: var(--text-main);
  padding: 6px;
  cursor: pointer;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-menu-icon:active {
  background-color: var(--border-subtle);
}

.btn-close-banner {
  background: transparent;
  border: none;
  color: var(--text-sub);
  font-size: 1.2rem;
  cursor: pointer;
}

/* Navigation Overlay */
.menu-wrapper {
  position: relative;
  display: inline-block;
}

.native-nav-select {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
  -webkit-appearance: menulist-button;
}

/* ==========================================================================
   4. CARDS & FORMS
   ========================================================================== */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 14px;
  margin-bottom: 14px;
}

.card h2 {
  font-size: 1.05rem;
  color: var(--accent-blue);
  margin-bottom: 10px;
}

.description, 
.placeholder-text, 
.section-desc {
  color: var(--text-sub);
  font-size: 0.9rem;
  line-height: 1.5;
}

.section-header-flex {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

/* Form Layouts */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
  align-items: flex-end;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.form-group label {
  font-size: 0.8rem;
  color: var(--text-sub);
}

.form-group input, 
.form-group select {
  padding: 8px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  color: var(--text-main);
  font-size: 0.9rem;
  outline: none;
}

.btn-group-inline {
  display: flex;
  gap: 8px;
}

.status-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.status-disconnected { color: var(--accent-red); font-weight: 600; }
.status-connected { color: var(--accent-green); font-weight: 600; }

/* ==========================================================================
   5. TELEMETRY, COUNTERS & BADGES
   ========================================================================== */
.telemetry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  background-color: var(--bg-surface);
  padding: 10px;
  border-radius: 8px;
  margin-bottom: 12px;
  text-align: center;
}

.telemetry-label {
  display: block;
  font-size: 0.7rem;
  color: var(--text-sub);
  text-transform: uppercase;
}

.telemetry-value {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent-yellow);
}

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

.counter-card {
  background-color: var(--bg-surface);
  border-radius: 8px;
  padding: 10px 6px;
  text-align: center;
  border-top: 3px solid var(--border-strong);
}

.counter-card.highlight-total { border-top-color: var(--accent-blue); }
.counter-card.highlight-unique { border-top-color: var(--accent-green); }
.counter-card.highlight-missed { border-top-color: var(--accent-red); }

.counter-num {
  display: block;
  font-size: 1.2rem;
  font-weight: 700;
}

.counter-label {
  font-size: 0.7rem;
  color: var(--text-sub);
}

.badge {
  font-size: 0.7rem;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: 4px;
}

.badge-live, 
.badge-running { background-color: var(--accent-green); color: var(--text-dark); }
.badge-paused { background-color: var(--accent-peach); color: var(--text-dark); }
.badge-idle { background-color: var(--border-strong); color: var(--text-main); }
.badge-stopped { background-color: var(--accent-red); color: var(--text-dark); }

/* ==========================================================================
   6. CANVAS & TIMELINE CONTROLS
   ========================================================================== */
.canvas-wrapper {
  width: 100%;
  overflow-x: auto;
  background-color: var(--bg-main);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  margin: 8px 0;
}

.relative-canvas {
  position: relative;
  overflow: hidden;
}

canvas {
  display: block;
  width: 100%;
  height: 200px;
  background-color: var(--bg-main);
}

.stats-bar {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-sub);
}

.timer-info {
  color: var(--accent-red);
}

/* Range Cropping Overlay */
.range-controls {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  padding: 10px;
  margin-bottom: 8px;
}

.range-controls.hidden { display: none; }

.range-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  margin-bottom: 8px;
  color: var(--text-sub);
}

.range-info {
  color: var(--accent-peach);
  font-weight: 700;
}

.range-sliders-wrapper {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 10px;
}

.range-sliders-wrapper input[type="range"] {
  width: 100%;
  accent-color: var(--accent-blue);
}

.range-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* Progress Bar */
.progress-bar-wrapper {
  width: 100%;
  height: 16px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  overflow: hidden;
  margin-top: 8px;
}

.progress-bar-fill {
  height: 100%;
  background-color: var(--accent-green);
  width: 0%;
  transition: width 0.2s ease-in-out;
}

/* ==========================================================================
   7. PACKETS LIST & CARDS
   ========================================================================== */
.packets-container {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 400px;
  overflow-y: auto;
}

.empty-list-placeholder {
  font-size: 0.85rem;
  color: var(--text-dim);
  text-align: center;
  padding: 20px 0;
}

.packet-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-left: 4px solid var(--accent-green);
  border-radius: 8px;
  padding: 10px;
}

.tx-card {
  border-left-color: var(--accent-peach);
}

.packet-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.packet-protocol {
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--accent-peach);
}

.packet-uid, 
.packet-slot {
  font-size: 0.75rem;
  color: var(--text-sub);
}

.packet-key {
  font-family: monospace;
  font-weight: 700;
  font-size: 1rem;
  color: var(--accent-green);
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.packet-meta-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 4px;
  font-size: 0.75rem;
  color: var(--text-main);
}

.packet-timestamps {
  margin-top: 6px;
  font-size: 0.7rem;
  color: var(--text-dim);
  border-top: 1px dashed var(--border-subtle);
  padding-top: 4px;
}

.tx-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 8px;
  padding-top: 6px;
  border-top: 1px dashed var(--border-subtle);
}

/* ==========================================================================
   8. POPUPS, MODALS & FOOTER
   ========================================================================== */
/* Popup Banner */
.packet-banner {
  position: fixed;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 28px);
  max-width: 480px;
  background-color: var(--bg-card);
  border: 1px solid var(--accent-green);
  border-radius: 12px;
  padding: 12px 14px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.6);
  z-index: 200;
  transition: all 0.3s ease;
}

.packet-banner.hidden {
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 20px);
}

.banner-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}

.banner-badge {
  background-color: var(--accent-green);
  color: var(--text-dark);
  font-size: 0.65rem;
  font-weight: 800;
  padding: 2px 6px;
  border-radius: 4px;
}

.banner-protocol {
  font-weight: 700;
  color: var(--accent-peach);
  font-size: 0.9rem;
}

.banner-key {
  font-family: monospace;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--accent-green);
}

.banner-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px;
  font-size: 0.75rem;
  margin-top: 6px;
  color: var(--text-main);
}

.banner-sublabel {
  color: var(--text-sub);
  font-size: 0.7rem;
}

/* Modal Backdrop & Card */
.modal-backdrop {
  position: fixed;
  top: 0; 
  left: 0;
  width: 100vw; 
  height: 100vh;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 300;
}

.modal-backdrop.hidden { display: none; }

.modal-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  padding: 20px;
  width: 90%;
  max-width: 400px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.8);
}

.modal-card h3 {
  color: var(--accent-blue);
  margin-bottom: 12px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 16px;
}

/* Footer Log Output */
.app-footer {
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  padding: 8px 12px;
}

.log-output {
  font-family: monospace;
  font-size: 0.8rem;
  color: var(--text-sub);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ==========================================================================
   9. UTILITY CLASSES
   ========================================================================== */
.width-100 { width: 100%; }
.margin-top-12 { margin-top: 12px; }