/* ========================================================================
   DEFRAG — styles
   Design tokens live in :root and are referenced via var() throughout.
   Colors are named by role, not hue, so retheming is a one-line change.
   ======================================================================== */

:root {
  /* Surfaces */
  --bg:            #06090f;
  --panel:         #0e1420;
  --grid-bg:       #0a0f18;
  --border:        #1f2a3a;
  --border-subtle: #172033;

  /* Text tones (bright → dim) */
  --text-bright:   #e2e8f0;
  --text:          #c6cad4;
  --text-muted:    #94a3b8;
  --text-dim:      #64748b;
  --text-dimmer:   #475569;
  --text-dimmest:  #334155;

  /* Accent + state */
  --accent:        #5eead4;  /* defragged, focus, primary action */
  --gold:          #fbbf24;  /* MFT */
  --bad:           #dc2626;  /* corrupted sector */
  --lost:          #7f1d1d;  /* lost-file status */
  --fragmented:    #f87171;  /* fragmented status */

  /* Terrain ramp (mirrors canvas palette in index.js) */
  --tone-empty:    #141a26;  /* empty, not fresh */
  --tone-fresh:    #2e3643;  /* empty, fresh */
  --tone-locked:   #64748b;  /* system lock */

  /* Glows */
  --accent-glow:      rgba(94, 234, 212, 0.5);
  --accent-glow-soft: rgba(94, 234, 212, 0.08);
  --gold-glow:        rgba(251, 191, 36, 0.6);
}

/* ---------- Reset ---------- */

* { box-sizing: border-box; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Consolas', 'Courier New', monospace;
  margin: 0;
  padding: 24px 16px;
  min-height: 100vh;
}

/* ---------- Layout shell ---------- */

.frame {
  max-width: 960px;
  margin: 0 auto;
}

header {
  display: flex;
  align-items: baseline;
  gap: 24px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

h1 {
  font-size: 30px;
  margin: 0;
  letter-spacing: 4px;
  color: var(--accent);
  text-shadow: 0 0 12px var(--accent-glow);
}

h1 .sub {
  color: var(--text-dimmer);
  font-size: 16px;
  letter-spacing: 2px;
}

main {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

/* ---------- HUD ---------- */

.hud {
  display: flex;
  align-items: center;
  gap: 18px;
  flex: 1;
  padding: 8px 14px;
  background: var(--panel);
  border: 1px solid var(--border);
  font-size: 12px;
}

.stat        { display: flex; gap: 6px; align-items: baseline; }
.stat label  { color: var(--text-dim); letter-spacing: 1px; }
.stat span   { color: var(--text-bright); font-weight: bold; font-size: 14px; }
.stat.mft span {
  color: var(--gold);
  text-shadow: 0 0 6px var(--gold-glow);
}

/* ---------- Grid canvas ---------- */

#grid {
  background: var(--grid-bg);
  border: 1px solid var(--border);
  box-shadow: inset 0 0 24px var(--accent-glow-soft);
  image-rendering: pixelated;
  cursor: crosshair;
}

/* ---------- Sidebar / file list ---------- */

.sidebar {
  flex: 1;
  min-width: 240px;
  max-height: 320px;
  overflow-y: auto;
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 10px 14px;
}

.sidebar h2 {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--text-dim);
}

#file-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

#file-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0;
  font-size: 11px;
  border-bottom: 1px solid var(--border-subtle);
}

#file-list li:last-child { border-bottom: none; }

.swatch {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  box-shadow: 0 0 4px currentColor;
}

.fname {
  flex: 1;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.status {
  font-size: 10px;
  padding: 2px 6px;
  border: 1px solid currentColor;
}

.status.defragged  { color: var(--accent); }
.status.fragmented { color: var(--fragmented); }
.status.lost       { color: var(--lost); }
.status.archived   { color: var(--text-dimmer); border-color: var(--text-dimmest); }

/* ---------- Buttons ---------- */

button {
  background: var(--panel);
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 8px 18px;
  font-family: inherit;
  font-size: 12px;
  letter-spacing: 2px;
  cursor: pointer;
}

button:hover {
  background: var(--accent);
  color: var(--bg);
}

/* Compact variant for inline archive actions — base rules cascade. */
#file-list button {
  font-size: 10px;
  padding: 3px 8px;
  letter-spacing: 1px;
}

/* Secondary button (NEW DISK) — muted instead of accent. */
#restart {
  border-color: var(--text-dim);
  color: var(--text-dim);
}

#restart:hover {
  background: var(--text-dim);
  color: var(--bg);
}

/* ---------- Controls row ---------- */

.controls {
  margin-top: 12px;
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.message {
  flex: 1;
  padding-left: 10px;
  color: var(--text-muted);
  font-size: 11px;
}

/* ---------- Legend ---------- */

.legend {
  margin-top: 16px;
  padding: 10px 14px;
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  background: var(--panel);
  border: 1px solid var(--border);
  font-size: 10px;
  color: var(--text-dim);
}

.legend div {
  display: flex;
  align-items: center;
}

.legend .box {
  display: inline-block;
  width: 12px;
  height: 12px;
  margin-right: 6px;
}

.box.empty     { background: var(--tone-empty); border: 1px solid var(--border); }
.box.fresh     { background: var(--tone-fresh); border: 1px solid var(--border); }
.box.system    { background: var(--tone-locked); }
.box.bad       { background: var(--bad); }
.box.mft       { background: var(--gold); }
.box.defragged { background: transparent; border: 2px solid var(--text-bright); }

.sound-toggle {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
}

.sound-toggle input { cursor: pointer; }

/* ---------- Auto mode panel ---------- */

#fill-btn, #auto-btn {
  border-color: var(--text-dim);
  color: var(--text-dim);
}

#fill-btn:hover, #auto-btn:hover {
  background: var(--text-dim);
  color: var(--bg);
}