/* ── App-specific tokens (extend ui-kit) ─────── */
:root {
  --teal:  #6ba3a0;
  --green: #a9b665;
  --red:   #ea6962;
}
[data-theme="light"] {
  --teal:  #4a7a78;
  --green: #5a7a30;
  --red:   #c04040;
}

/* ── Base ─────────────────────────────────────── */

body {
  background: var(--bg);
  color: var(--text);
  display: flex;
  height: 100vh;
  overflow: hidden;
  font-size: 13px;
  line-height: 1.4;
}

/* ── Sidebar ──────────────────────────────────── */

#sidebar {
  width: 300px;
  min-width: 300px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 10;
}

#sidebar h1 {
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 3px;
  text-transform: uppercase;
}

.sidebar-section {
  border-bottom: 1px solid var(--border);
  padding: 8px 10px;
}

#sidebar h3 {
  font-size: 9px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 6px;
}

/* ── Stats ────────────────────────────────────── */

.stat {
  font-size: 11px;
  margin: 2px 0;
  color: var(--text-secondary);
}

.stat span { color: var(--accent); }

/* Progress bars use .progress-bar-wrap + .progress-bar from ui-kit */
.progress-bar-wrap { height: 3px; margin: 5px 0; border: none; }

/* ── Target section ───────────────────────────── */

#target-search-wrap { position: relative; }

#target-search {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 5px 8px;
  color: var(--text);
  font-family: var(--font);
  font-size: 11px;
  outline: none;
}

#target-search:focus { border-color: var(--accent); }
#target-search::placeholder { color: var(--text-muted); }

#target-suggestions {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: none;
  max-height: 180px;
  overflow-y: auto;
  z-index: 100;
}

.suggestion-item {
  padding: 4px 8px;
  font-size: 11px;
  cursor: pointer;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-secondary);
  font-family: var(--font);
}

.suggestion-item:last-child { border-bottom: none; }
.suggestion-item:hover { background: var(--surface2); color: var(--accent); }
.suggestion-depth { color: var(--text-muted); font-size: 10px; }
.suggestion-item:hover .suggestion-depth { color: var(--accent-dark); }

#target-display {
  margin-top: 6px;
  padding: 6px;
  background: var(--bg);
  border: 1px solid var(--accent);
}

#target-name {
  font-size: 11px;
  color: var(--accent);
  margin-bottom: 3px;
}

#target-gap-display {
  font-size: 10px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

#target-display .progress-bar-wrap { margin: 3px 0 6px; }

.target-actions { display: flex; gap: 4px; margin-top: 4px; }

/* ── Controls ─────────────────────────────────── */

#controls label {
  font-size: 11px;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 2px 0;
  font-family: var(--font);
}

input[type="checkbox"] { accent-color: var(--accent); }

#search {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 5px 8px;
  color: var(--text);
  font-family: var(--font);
  font-size: 11px;
  outline: none;
  width: 100%;
  margin-top: 5px;
}

#search:focus { border-color: var(--accent); }
#search::placeholder { color: var(--text-muted); }

/* ── Buttons (use .btn / .btn-icon / .btn-danger from ui-kit) ── */
/* App-level overrides for specific buttons */
#sidebar .btn { font-size: 10px; padding: 5px 10px; }
#btn-clear-target { border-color: var(--red); color: var(--red); }
#btn-target-guide { flex: 1; }
#theme-toggle { font-size: 9px; padding: 3px 7px; letter-spacing: 1px; }

/* ── Node detail ──────────────────────────────── */

#node-detail, #study-guide {
  padding: 8px 10px;
}

/* .hidden is provided by ui-kit base.css */

#detail-name {
  font-size: 12px;
  color: var(--text);
  margin-bottom: 5px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 5px;
}

#detail-aliases {
  font-size: 10px;
  color: var(--text-muted);
  font-style: italic;
}

.detail-row {
  font-size: 11px;
  margin: 2px 0;
  color: var(--text-secondary);
}

#detail-preview {
  font-size: 10px;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  padding-top: 5px;
  margin-top: 5px;
  line-height: 1.5;
}

#detail-prereqs, #detail-unlocks {
  list-style: none;
  padding-left: 8px;
}

#detail-prereqs li, #detail-unlocks li {
  font-size: 11px;
  color: var(--teal);
  cursor: pointer;
  padding: 1px 0;
}

#detail-prereqs li:hover, #detail-unlocks li:hover { color: var(--text); }

.detail-actions {
  display: flex;
  gap: 4px;
  margin-top: 8px;
}

/* ── Study guide ──────────────────────────────── */

#study-guide h3 {
  color: var(--text-secondary);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 6px;
  word-break: break-word;
}

#guide-steps {
  max-height: 280px;
  overflow-y: auto;
  border: 1px solid var(--border);
  margin-bottom: 6px;
}

.guide-step {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 6px;
  font-size: 11px;
  cursor: pointer;
  border-bottom: 1px solid var(--border);
  font-family: var(--font);
}

.guide-step:last-child { border-bottom: none; }
.guide-step:hover { background: var(--surface2); }

.guide-step .step-num {
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  font-weight: 700;
  flex-shrink: 0;
  border: 1px solid;
}

.guide-step.learned .step-num  { border-color: var(--green); color: var(--green); }
.guide-step.unlocked .step-num { border-color: var(--teal);  color: var(--teal);  }
.guide-step.locked .step-num   { border-color: var(--text-muted);  color: var(--text-muted);  }

.guide-step .step-name  { flex: 1; color: var(--text-secondary); }
.guide-step .step-depth { color: var(--text-muted); font-size: 10px; }

.guide-actions { display: flex; gap: 4px; }

/* ── Canvas ───────────────────────────────────── */

#canvas-container {
  flex: 1;
  position: relative;
  overflow: hidden;
  background: var(--bg);
}

#tree-canvas {
  position: absolute;
  top: 0;
  left: 0;
}