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

:root {
  --bg-dark: #0a0a0a;
  --bg-panel: #111;
  --phosphor-green: #33ff33;
  --phosphor-amber: #ffb000;
  --phosphor-dim: #227722;
  --text-white: #e0e0e0;
  --error-red: #ff3333;
  --border-color: #333;
}

body {
  font-family: 'VT323', monospace;
  background: var(--bg-dark);
  color: var(--phosphor-green);
  min-height: 100vh;
  overflow-x: hidden;
}

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

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: linear-gradient(180deg, #1a1a1a 0%, #0a0a0a 100%);
  border-bottom: 2px solid var(--phosphor-green);
  box-shadow: 0 0 20px rgba(51, 255, 51, 0.2);
}

.title {
  font-family: 'Press Start 2P', monospace;
  font-size: 1.5rem;
  color: var(--phosphor-green);
  text-shadow: 0 0 10px var(--phosphor-green), 0 0 20px var(--phosphor-green);
  animation: flicker 4s infinite;
}

@keyframes flicker {
  0%, 100% { opacity: 1; }
  92% { opacity: 1; }
  93% { opacity: 0.8; }
  94% { opacity: 1; }
  97% { opacity: 0.9; }
  98% { opacity: 1; }
}

.badge {
  font-size: 1rem;
  padding: 0.5rem 1rem;
  background: #1a1a1a;
  border: 1px solid var(--phosphor-amber);
  color: var(--phosphor-amber);
  text-shadow: 0 0 5px var(--phosphor-amber);
}

/* Main content */
.main-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  padding: 1rem;
  flex: 1;
}

@media (max-width: 1024px) {
  .main-content {
    grid-template-columns: 1fr;
  }
}

/* Panels */
.panel {
  background: var(--bg-panel);
  border: 2px solid var(--border-color);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.panel-header {
  font-size: 1.2rem;
  color: var(--phosphor-amber);
  text-align: center;
  padding-bottom: 0.5rem;
  border-bottom: 1px dashed var(--border-color);
}

.section {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.code-section {
  flex: 1;
  min-height: 200px;
}

.label {
  font-size: 1rem;
  color: var(--phosphor-dim);
  text-transform: uppercase;
}

/* Form elements */
.textarea, .select, .code-editor, .text-input {
  font-family: 'VT323', monospace;
  font-size: 1rem;
  background: #0a0a0a;
  color: var(--phosphor-green);
  border: 1px solid var(--border-color);
  padding: 0.75rem;
  resize: vertical;
}

.text-input {
  resize: none;
}

.textarea:focus, .select:focus, .text-input:focus {
  outline: none;
  border-color: var(--phosphor-green);
  box-shadow: 0 0 5px var(--phosphor-green);
}

.select {
  cursor: pointer;
}

.code-editor {
  flex: 1;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-all;
  min-height: 150px;
  max-height: 300px;
  line-height: 1.4;
}

.template-editor {
  font-size: 0.85rem;
}

.template-toggle {
  background: transparent;
  border: none;
  color: var(--phosphor-amber);
  font-family: 'VT323', monospace;
  font-size: 1rem;
  cursor: pointer;
  text-align: left;
  padding: 0.5rem 0;
}

.template-toggle:hover {
  text-shadow: 0 0 5px var(--phosphor-amber);
}

/* Buttons */
.button-row {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
}

.btn {
  font-family: 'VT323', monospace;
  font-size: 1rem;
  padding: 0.5rem 1rem;
  background: #222;
  color: var(--text-white);
  border: 2px outset #444;
  cursor: pointer;
  text-transform: uppercase;
  transition: all 0.1s;
}

.btn:hover:not(:disabled) {
  background: #333;
  border-color: #555;
}

.btn:active:not(:disabled) {
  border-style: inset;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: #1a3a1a;
  color: var(--phosphor-green);
  border-color: var(--phosphor-green);
}

.btn-primary:hover:not(:disabled) {
  background: #2a5a2a;
  box-shadow: 0 0 10px var(--phosphor-green);
}

.btn-success {
  background: #2a4a2a;
  color: var(--phosphor-green);
  border-color: var(--phosphor-green);
}

.btn-control {
  padding: 0.4rem 0.75rem;
  font-size: 0.9rem;
}

.btn-settings {
  padding: 0.5rem 0.75rem;
  background: #2a2a1a;
  color: var(--phosphor-amber);
  border-color: var(--phosphor-amber);
}

.btn-settings:hover:not(:disabled) {
  background: #3a3a2a;
  box-shadow: 0 0 8px var(--phosphor-amber);
}

.model-indicator {
  font-size: 0.85rem;
  color: var(--phosphor-dim);
  padding: 0.25rem 0.5rem;
  background: #0a0a0a;
  border: 1px solid var(--border-color);
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Settings Panel */
.settings-panel {
  background: #0d0d0d;
  border: 2px solid var(--phosphor-amber);
  padding: 1rem;
  margin-top: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.settings-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--phosphor-amber);
  font-size: 1.1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px dashed var(--border-color);
}

.settings-close {
  background: transparent;
  border: none;
  color: var(--phosphor-amber);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
}

.settings-close:hover {
  text-shadow: 0 0 5px var(--phosphor-amber);
}

.settings-group {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.settings-label {
  font-size: 0.9rem;
  color: var(--phosphor-dim);
  text-transform: uppercase;
}

.optional-tag {
  font-size: 0.75rem;
  color: #666;
  text-transform: none;
}

.checkbox-group {
  flex-direction: row;
  align-items: center;
  gap: 0.5rem;
}

.checkbox-group input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--phosphor-green);
}

.checkbox-group label {
  color: var(--text-white);
  font-size: 0.95rem;
  cursor: pointer;
}

.settings-divider {
  height: 1px;
  background: var(--border-color);
  margin: 0.5rem 0;
}

.settings-info {
  background: #1a1a0a;
  border: 1px solid #333;
  padding: 0.5rem;
  font-size: 0.85rem;
  color: #888;
}

.settings-info p {
  margin: 0.25rem 0;
}

/* CRT Display */
.crt-frame {
  background: #1a1a1a;
  border: 8px solid #2a2a2a;
  border-radius: 20px;
  padding: 15px;
  box-shadow: 
    inset 0 0 30px rgba(0,0,0,0.8),
    0 0 20px rgba(51, 255, 51, 0.1);
}

.crt-screen {
  position: relative;
  background: #000;
  border-radius: 10px;
  overflow: hidden;
}

.vga-canvas {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 320 / 200;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  background: #000;
}

.scanlines {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.3) 2px,
    rgba(0, 0, 0, 0.3) 4px
  );
  pointer-events: none;
}

/* Controls bar */
.controls-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem;
  background: #1a1a1a;
  border: 1px solid var(--border-color);
  flex-wrap: wrap;
}

.fps-counter {
  font-size: 1rem;
  color: var(--phosphor-amber);
  padding: 0.25rem 0.5rem;
  background: #0a0a0a;
  border: 1px solid var(--border-color);
}

.input-hint {
  font-size: 0.85rem;
  color: var(--phosphor-dim);
  margin-left: auto;
}

/* Palette */
.palette-section {
  margin-top: 0.5rem;
}

.palette-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 1px;
  background: #1a1a1a;
  padding: 0.5rem;
  border: 1px solid var(--border-color);
}

.palette-color {
  width: 8px;
  height: 8px;
}

/* Examples */
.examples-section {
  margin-top: 0.5rem;
}

.examples-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem;
}

.example-btn {
  font-family: 'VT323', monospace;
  font-size: 0.85rem;
  padding: 0.5rem;
  background: #1a1a1a;
  color: var(--phosphor-dim);
  border: 1px solid var(--border-color);
  cursor: pointer;
  text-align: left;
  transition: all 0.2s;
}

.example-btn:hover {
  color: var(--phosphor-green);
  border-color: var(--phosphor-green);
  background: #0a2a0a;
}

/* Error box */
.error-box {
  background: #2a0a0a;
  color: var(--error-red);
  border: 1px solid var(--error-red);
  padding: 0.75rem;
  font-size: 0.9rem;
  white-space: pre-wrap;
}

/* Footer */
.footer {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  padding: 1rem;
  background: #0a0a0a;
  border-top: 1px solid var(--border-color);
  font-size: 0.9rem;
  color: var(--phosphor-dim);
  flex-wrap: wrap;
}

.footer a {
  color: var(--phosphor-amber);
  text-decoration: none;
}

.footer a:hover {
  text-shadow: 0 0 5px var(--phosphor-amber);
}

/* Mobile adjustments */
@media (max-width: 768px) {
  .header {
    flex-direction: column;
    gap: 0.5rem;
    padding: 1rem;
  }
  
  .title {
    font-size: 1rem;
  }
  
  .main-content {
    padding: 0.5rem;
  }
  
  .examples-grid {
    grid-template-columns: 1fr;
  }
  
  .controls-bar {
    justify-content: center;
  }
  
  .input-hint {
    margin-left: 0;
    width: 100%;
    text-align: center;
  }
  
  .footer {
    gap: 1rem;
    text-align: center;
  }
  
  .model-indicator {
    max-width: 150px;
  }
}

/* Blinking cursor effect for generating state */
@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

.btn-primary:disabled {
  animation: blink 0.5s infinite;
}