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

:root {
  --bg:      #0f0f0f;
  --surface: #1a1a1a;
  --border:  #2e2e2e;
  --accent:  #b0e8b8;
  --text:    #e0e0e0;
  --muted:   #666;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, sans-serif;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

header {
  padding: 1rem 2rem;
  border-bottom: 1px solid var(--border);
}

header h1 {
  font-family: monospace;
  font-size: 1.4rem;
  color: var(--accent);
  letter-spacing: 0.05em;
}

main {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: 1.5rem 2rem;
}

/* Drop zone */
#dropzone {
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 2rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  user-select: none;
}

#dropzone:hover,
#dropzone.drag-over {
  border-color: var(--accent);
  background: #1a2b1e;
}

#dropzone p { color: var(--muted); }
#dropzone span { font-size: 0.85rem; }

/* Controls */
#controls {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

#controls label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
}

#controls input[type="range"],
#controls input[type="checkbox"],
#player-controls input[type="checkbox"] {
  accent-color: var(--accent);
}

#controls input[type="range"] {
  width: 120px;
}

#controls select {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.25rem 0.5rem;
  font-size: 0.9rem;
}

.checkbox { gap: 0.4rem; cursor: pointer; }
#controls label.disabled { opacity: 0.35; pointer-events: none; }

button {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 4px;
  padding: 0.3rem 0.9rem;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.15s;
}

button:hover  { background: #1a2b1e; }
button:disabled { opacity: 0.4; cursor: default; }

/* Charset preview */
#charset-preview {
  font-family: "Courier New", Courier, monospace;
  font-size: 0.95rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.5rem 1rem;
  overflow-x: auto;
  white-space: nowrap;
}

/* Progress bar */
#progress-wrap {
  display: flex;
  align-items: center;
  gap: 1rem;
}

#progress-track {
  flex: 1;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}

#progress-bar {
  height: 100%;
  width: 0%;
  background: var(--accent);
  border-radius: 3px;
  transition: width 0.1s linear;
}

#progress-label {
  font-size: 0.85rem;
  color: var(--muted);
  white-space: nowrap;
}

/* Player row */
#player-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

#player-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  flex: 1;
}

#frame-counter {
  font-size: 0.85rem;
  color: var(--muted);
  font-family: monospace;
  flex: 1;
}

#image-export-btns,
#video-export-btns {
  display: flex;
  gap: 0.5rem;
}

[hidden] { display: none !important; }

/* ASCII output */
#output {
  font-family: "Courier New", Courier, monospace;
  font-size: 6px;
  line-height: 1.1;
  white-space: pre;
  overflow-x: auto;
  color: var(--accent);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem;
  min-height: 200px;
}