*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* Strict palette */
  --bg-primary: #2c2b30;
  --bg-secondary: #2c2b30;
  --bg-card: #4f4f51;
  --bg-elevated: #4f4f51;
  --border: rgba(214, 214, 214, 0.1);
  --border-hover: rgba(214, 214, 214, 0.2);
  --text-primary: #d6d6d6;
  --text-secondary: rgba(214, 214, 214, 0.6);
  --text-muted: rgba(214, 214, 214, 0.35);
  --accent: #f2c4ce;
  --accent-glow: rgba(242, 196, 206, 0.25);
  --accent-secondary: #f58f7c;
  --accent-secondary-glow: rgba(245, 143, 124, 0.25);
  --danger: #f58f7c;
  --success: #f2c4ce;
  --radius: 12px;
  --radius-sm: 8px;
}

html, body {
  height: 100%;
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  overflow: hidden;
}

/* =========== LAYOUT =========== */

.app {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  z-index: 10;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-icon {
  font-size: 1.6rem;
  color: var(--accent-secondary);
  text-shadow: 0 0 20px var(--accent-secondary-glow);
}

.brand-text {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-muted);
}

.status-dot.online {
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent-glow);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.main {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* =========== ASCII VIEWPORT =========== */

.ascii-viewport {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: auto;
  position: relative;
  background: var(--bg-primary);
}

.start-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 5;
  background: radial-gradient(ellipse at center, rgba(242, 196, 206, 0.04) 0%, transparent 70%);
}

.start-overlay.hidden {
  display: none;
}

.start-content {
  text-align: center;
  animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.start-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
  filter: drop-shadow(0 0 30px var(--accent-glow));
}

.start-content h2 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, var(--text-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.start-content p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.btn-start {
  position: relative;
  padding: 14px 36px;
  font-size: 1rem;
  font-weight: 600;
  font-family: inherit;
  border: none;
  border-radius: 50px;
  color: #2c2b30;
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  cursor: pointer;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn-start:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px var(--accent-secondary-glow);
}

.btn-pulse {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 2px solid var(--accent-secondary);
  animation: btn-pulse-anim 2s ease-out infinite;
}

@keyframes btn-pulse-anim {
  from { transform: scale(1); opacity: 0.6; }
  to { transform: scale(1.3); opacity: 0; }
}

.ascii-output {
  font-family: 'JetBrains Mono', monospace;
  font-size: 8px;
  line-height: 1;
  letter-spacing: 0;
  white-space: pre;
  padding: 12px;
  color: var(--accent-secondary);
  user-select: text;
}

/* =========== CONTROLS PANEL =========== */

.controls-panel {
  width: 260px;
  flex-shrink: 0;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  overflow-y: auto;
  transition: width 0.3s ease, padding 0.3s ease, opacity 0.3s ease;
}

.controls-panel.collapsed {
  width: 0;
  padding: 0;
  overflow: hidden;
  opacity: 0;
  border-left: none;
}

/* Floating button to reopen collapsed panel */
.btn-panel-open {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 15;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border-hover);
  background: var(--bg-card);
  color: var(--accent-secondary);
  font-size: 1.25rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  transition: all 0.25s ease;
  animation: fadeInRight 0.3s ease;
}

.btn-panel-open:hover {
  border-color: var(--accent-secondary);
  box-shadow: 0 0 20px var(--accent-secondary-glow);
  transform: translateY(-50%) scale(1.1);
}

.btn-panel-open.hidden {
  display: none;
}

@keyframes fadeInRight {
  from { opacity: 0; transform: translateY(-50%) translateX(20px); }
  to { opacity: 1; transform: translateY(-50%) translateX(0); }
}

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

.controls-header h3 {
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
}

.btn-icon {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  width: 30px;
  height: 30px;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  transition: all 0.2s;
}

.btn-icon:hover {
  border-color: var(--accent-secondary);
  color: var(--accent-secondary);
}

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

.control-group label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.control-group input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--bg-elevated);
  outline: none;
}

.control-group input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent-secondary);
  cursor: pointer;
  box-shadow: 0 0 10px var(--accent-secondary-glow);
  transition: transform 0.15s;
}

.control-group input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.range-value {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}

.control-group select {
  padding: 8px 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.85rem;
  cursor: pointer;
  outline: none;
  transition: border-color 0.2s;
}

.control-group select:focus {
  border-color: var(--accent-secondary);
}

.control-group select option {
  background: var(--bg-card);
}

.toggle-row {
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
}

.btn-toggle {
  padding: 6px 16px;
  font-size: 0.8rem;
  font-weight: 600;
  font-family: inherit;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--bg-elevated);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
}

.btn-toggle[data-active="true"] {
  background: var(--accent-secondary);
  border-color: var(--accent-secondary);
  color: #2c2b30;
  box-shadow: 0 0 12px var(--accent-secondary-glow);
}

.control-divider {
  height: 1px;
  background: var(--border);
}

.control-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.btn-action {
  flex: 1;
  min-width: 60px;
  padding: 8px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  font-family: inherit;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}

.btn-action:hover {
  border-color: var(--accent-secondary);
  color: var(--text-primary);
  background: rgba(245, 143, 124, 0.1);
}

.btn-action.recording {
  border-color: var(--danger);
  color: var(--danger);
  background: rgba(245, 143, 124, 0.1);
  animation: pulse-dot 1s ease-in-out infinite;
}

.fps-counter {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: auto;
  padding-top: 8px;
}

/* =========== RESPONSIVE =========== */

@media (max-width: 768px) {
  .controls-panel {
    position: fixed;
    right: 0;
    top: 52px;
    bottom: 0;
    z-index: 20;
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.5);
  }

  .start-content h2 {
    font-size: 1.4rem;
  }

  .btn-start {
    padding: 12px 28px;
    font-size: 0.9rem;
  }
}