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

body {
  background: #0a0a0a;
  color: #e0e0e0;
  font-family: 'Courier New', monospace;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem;
}

.tagline {
  font-size: 1.25rem;
  color: #666;
  margin-bottom: 2rem;
}

.tagline .kw {
  color: #c084fc;
}

.tagline .var {
  color: #67e8f9;
}

.tagline .prop {
  color: #a78bfa;
}

.tagline .str {
  color: #34d399;
}

main {
  width: 100%;
  max-width: 900px;
}

/* Input section - side by side */
.input-section {
  display: flex;
  gap: 2rem;
  margin-bottom: 2rem;
}

/* Drop zone */
.drop-zone {
  flex: 1;
  border: 2px dashed #333;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  padding: 1rem;
  position: relative;
}

.drop-zone:hover,
.drop-zone--active {
  border-color: #a855f7;
  background: rgba(168, 85, 247, 0.05);
}

.drop-zone__prompt {
  color: #666;
  text-align: center;
}

.drop-zone__preview {
  max-width: 100%;
  max-height: 180px;
  border-radius: 4px;
}

/* Controls */
.controls {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.controls h3 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #888;
  margin-bottom: 0.5rem;
}

.preset-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.preset-buttons button {
  background: #1a1a1a;
  border: 1px solid #333;
  color: #e0e0e0;
  padding: 0.4rem 0.8rem;
  border-radius: 4px;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.85rem;
  transition: border-color 0.2s, background 0.2s;
}

.preset-buttons button:hover {
  border-color: #06b6d4;
}

.preset-buttons button.active {
  border-color: #06b6d4;
  background: rgba(6, 182, 212, 0.1);
}

.custom-inputs {
  display: flex;
  gap: 1rem;
}

.custom-inputs label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: #888;
}

.custom-inputs input {
  width: 80px;
  background: #1a1a1a;
  border: 1px solid #333;
  color: #e0e0e0;
  padding: 0.4rem;
  border-radius: 4px;
  font-family: inherit;
  font-size: 0.85rem;
}

.custom-inputs input:focus {
  outline: none;
  border-color: #a855f7;
}

.btn-primary {
  background: linear-gradient(90deg, #a855f7, #06b6d4);
  border: none;
  color: #fff;
  padding: 0.6rem 1.5rem;
  border-radius: 4px;
  cursor: pointer;
  font-family: inherit;
  font-size: 1rem;
  font-weight: bold;
  letter-spacing: 0.05em;
  transition: opacity 0.2s;
  margin-top: auto;
}

.btn-primary:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.btn-primary:not(:disabled):hover {
  opacity: 0.85;
}

/* Output section */
.output-section {
  border-top: 1px solid #222;
  padding-top: 2rem;
}

.output-display {
  display: flex;
  justify-content: center;
  margin-bottom: 1rem;
  overflow: auto;
  max-height: 70vh;
  background: #111;
  border-radius: 8px;
  padding: 1rem;
}

#outputCanvas {
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

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

.zoom-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.zoom-label {
  font-size: 0.85rem;
  color: #888;
  margin-right: 0.25rem;
}

.zoom-controls button {
  background: #1a1a1a;
  border: 1px solid #333;
  color: #e0e0e0;
  padding: 0.4rem 0.8rem;
  border-radius: 4px;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.85rem;
  transition: border-color 0.2s, background 0.2s;
}

.zoom-controls button:hover {
  border-color: #a855f7;
}

.zoom-controls button.active {
  border-color: #a855f7;
  background: rgba(168, 85, 247, 0.1);
}

/* Messages */
.error-msg {
  color: #ef4444;
  margin-top: 1rem;
  font-size: 0.9rem;
}

.warning-msg {
  color: #f59e0b;
  margin-top: 0.5rem;
  font-size: 0.9rem;
}

@media (max-width: 600px) {
  .input-section {
    flex-direction: column;
  }

  .output-controls {
    flex-direction: column;
    gap: 1rem;
  }
}