/* ── Controls panel ──────────────────────────────────────── */
#controls-panel {
  background: var(--surface);
  border-left: 1px solid var(--border);
  display: flex; flex-direction: column;
  overflow: hidden;
}

#controls-header {
  padding: 14px 14px 10px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

#generator-title {
  font-size: 14px; font-weight: 700; color: var(--text);
  letter-spacing: -.01em;
}

#controls-body {
  flex: 1; overflow-y: auto; padding: 0;
  display: flex; flex-direction: column;
}

#controls-body::-webkit-scrollbar { width: 3px; }
#controls-body::-webkit-scrollbar-track { background: transparent; }
#controls-body::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

/* ── Panel section ───────────────────────────────────────── */
.panel-section {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
}
.panel-section:last-child { border-bottom: none; }

.panel-section-title {
  font-size: 10px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
  color: var(--text3); margin-bottom: 10px;
}

/* ── Canvas size section ─────────────────────────────────── */
.size-section { }

.size-current {
  display: flex; align-items: baseline; gap: 6px; margin-bottom: 10px;
}
.size-current-dims {
  font-size: 18px; font-weight: 700; color: var(--text);
  font-variant-numeric: tabular-nums; letter-spacing: -.02em;
}
.size-current-label {
  font-size: 10px; color: var(--text3); text-transform: uppercase; letter-spacing: .06em;
}

/* Ratio tabs */
.size-tabs {
  display: flex; gap: 3px; margin-bottom: 8px;
  background: var(--surface2); border-radius: var(--radius-sm);
  padding: 3px;
}
.size-tab {
  flex: 1; padding: 4px 2px; border-radius: var(--radius-xs);
  font-size: 10px; font-weight: 600; color: var(--text2); text-align: center;
  cursor: pointer; transition: background var(--transition), color var(--transition);
  letter-spacing: .02em;
}
.size-tab:hover { color: var(--text); }
.size-tab.active { background: var(--surface3); color: var(--text); }

/* Size preset chips */
.size-presets {
  display: flex; flex-direction: column; gap: 2px;
  margin-bottom: 8px;
}
.size-preset-chip {
  display: flex; align-items: center; justify-content: space-between;
  padding: 6px 8px; border-radius: var(--radius-xs);
  cursor: pointer; border: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition);
}
.size-preset-chip:hover {
  background: var(--surface2); border-color: var(--border);
}
.size-preset-chip.active {
  background: var(--accent-dim); border-color: var(--accent);
}
.size-preset-left {
  display: flex; align-items: center; gap: 8px;
}
.size-preset-check {
  width: 14px; height: 14px; display: flex; align-items: center; justify-content: center;
  color: var(--accent); flex-shrink: 0;
}
.size-preset-dims {
  font-size: 12px; font-variant-numeric: tabular-nums; color: var(--text);
}
.size-preset-name {
  font-size: 10px; color: var(--text2);
}

/* Custom size */
.size-custom-row {
  display: flex; align-items: center; gap: 5px;
  padding-top: 4px;
}
.size-input {
  flex: 1; min-width: 0; padding: 6px 8px; text-align: center;
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: var(--radius-xs); color: var(--text);
  font: inherit; font-size: 12px; outline: none;
  transition: border-color var(--transition);
}
.size-input:focus { border-color: var(--accent); }
.size-x { font-size: 11px; color: var(--text3); flex-shrink: 0; }
.size-apply-btn {
  padding: 6px 10px; border-radius: var(--radius-xs);
  background: var(--accent); color: #fff;
  font: inherit; font-size: 11px; font-weight: 600; cursor: pointer;
  transition: opacity var(--transition);
  white-space: nowrap;
}
.size-apply-btn:hover { opacity: .85; }

/* ── Control group ───────────────────────────────────────── */
.ctrl-group {
  display: flex; flex-direction: column; gap: 8px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}
.ctrl-group:last-child { border-bottom: none; }

.ctrl-label {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 11px; color: var(--text2);
  text-transform: uppercase; letter-spacing: .05em; font-weight: 500;
}
.ctrl-value {
  color: var(--text); font-variant-numeric: tabular-nums;
  font-weight: 600; font-size: 11px; text-transform: none; letter-spacing: 0;
}

/* ── Range slider ────────────────────────────────────────── */
.ctrl-range {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 3px; border-radius: 2px;
  background: var(--border2); outline: none; cursor: pointer;
}
.ctrl-range::-webkit-slider-thumb {
  -webkit-appearance: none; width: 14px; height: 14px;
  border-radius: 50%; background: var(--accent);
  box-shadow: 0 0 0 3px var(--surface);
  transition: transform .1s, box-shadow .1s;
}
.ctrl-range:hover::-webkit-slider-thumb { transform: scale(1.15); }
.ctrl-range::-moz-range-thumb {
  width: 14px; height: 14px; border: none;
  border-radius: 50%; background: var(--accent);
  box-shadow: 0 0 0 3px var(--surface);
}

/* ── Range pair ──────────────────────────────────────────── */
.ctrl-range-pair { display: flex; flex-direction: column; gap: 6px; }
.ctrl-range-pair .range-row { display: flex; align-items: center; gap: 8px; }
.ctrl-range-pair .range-label { color: var(--text2); font-size: 11px; width: 26px; flex-shrink: 0; }
.ctrl-range-pair .range-val { color: var(--text); font-size: 11px; font-variant-numeric: tabular-nums; width: 30px; text-align: right; flex-shrink: 0; }

/* ── Color input ─────────────────────────────────────────── */
.ctrl-color-wrap {
  display: flex; align-items: center; gap: 8px;
}
.ctrl-color {
  width: 32px; height: 28px; border: 2px solid var(--border);
  border-radius: var(--radius-xs); cursor: pointer;
  background: none; padding: 0;
  transition: border-color var(--transition), transform .1s;
}
.ctrl-color:hover { border-color: var(--accent); transform: scale(1.05); }

/* ── Color list ──────────────────────────────────────────── */
.ctrl-color-list { display: flex; flex-wrap: wrap; gap: 5px; align-items: center; }
.ctrl-color-list .ctrl-color { width: 26px; height: 26px; }
.color-add-btn, .color-del-btn {
  width: 26px; height: 26px; border-radius: var(--radius-xs);
  border: 2px dashed var(--border); color: var(--text3); font-size: 16px; line-height: 1;
  display: flex; align-items: center; justify-content: center;
  transition: border-color var(--transition), color var(--transition);
}
.color-add-btn:hover { border-color: var(--accent); color: var(--accent); border-style: solid; }
.color-del-btn { border-style: solid; font-size: 13px; }
.color-del-btn:hover { border-color: var(--danger); color: var(--danger); }

/* ── Harmony bar ─────────────────────────────────────────── */
.harmony-section { }
.harmony-bar { display: flex; flex-wrap: wrap; gap: 4px; }

.harmony-base-row {
  display: flex; align-items: center; gap: 8px; margin-bottom: 8px;
}
.harmony-base-swatch {
  width: 22px; height: 22px; border-radius: var(--radius-xs);
  border: 2px solid var(--border); cursor: pointer;
  transition: border-color var(--transition);
}
.harmony-base-swatch:hover { border-color: var(--accent); }
.harmony-base-label { font-size: 11px; color: var(--text2); }

.harmony-modes {
  display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 8px;
}
.harmony-btn {
  padding: 3px 8px; border-radius: var(--radius-xs);
  border: 1px solid var(--border); color: var(--text2); font-size: 10px; font-weight: 600;
  text-transform: uppercase; letter-spacing: .04em;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.harmony-btn:hover { border-color: var(--accent); color: var(--text); }
.harmony-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

.harmony-variants {
  display: flex; gap: 4px;
}
.variant-btn {
  flex: 1; padding: 4px 6px; border-radius: var(--radius-xs);
  border: 1px solid var(--border); color: var(--text2); font-size: 10px; font-weight: 500;
  text-align: center;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.variant-btn:hover { border-color: var(--border2); color: var(--text); }
.variant-btn.active { background: var(--surface3); border-color: var(--border2); color: var(--text); }

/* ── Select ──────────────────────────────────────────────── */
.ctrl-select {
  width: 100%; padding: 7px 28px 7px 10px;
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text); font: inherit; font-size: 12px;
  outline: none; cursor: pointer; appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%234e4e70'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 10px center;
  transition: border-color var(--transition);
}
.ctrl-select:focus { border-color: var(--accent); }

/* ── Divider ─────────────────────────────────────────────── */
.ctrl-divider {
  border: none; border-top: 1px solid var(--border); margin: 0;
}

/* ── Checkbox ────────────────────────────────────────────── */
.ctrl-checkbox-wrap {
  display: flex; align-items: center;
}
.ctrl-checkbox {
  display: flex; align-items: center; gap: 8px; cursor: pointer;
  color: var(--text2); font-size: 12px; user-select: none;
}
.ctrl-checkbox input { accent-color: var(--accent); width: 14px; height: 14px; }
.ctrl-checkbox span { color: var(--text2); }

/* ── Mixer ──────────────────────────────────────────────────── */
.mixer-section {
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
}
.mixer-blend-section { background: var(--surface2); }
.mixer-section-header {
  display: flex; align-items: center; gap: 8px;
  padding: 4px 14px 8px;
}
.mixer-section-label {
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .08em; color: var(--text2);
}
.mixer-badge {
  font-size: 9px; font-weight: 800; padding: 2px 6px;
  border-radius: 3px; letter-spacing: .05em;
}
.bg-badge { background: var(--accent-dim); color: var(--accent); }
.fg-badge { background: rgba(255,107,138,.15); color: var(--accent2); }
.blend-badge { background: rgba(34,211,160,.15); color: var(--success); font-size: 13px; }

.mixer-gen-select {
  width: calc(100% - 28px); margin: 0 14px 8px;
  background: var(--surface3); border: 1px solid var(--border2);
  color: var(--text); border-radius: 6px;
  padding: 6px 8px; font-size: 12px; cursor: pointer;
}
.mixer-gen-select:focus { outline: none; border-color: var(--accent); }

.mixer-params { padding: 0 0 4px; }
.mixer-ctrl-row {
  display: flex; align-items: center; gap: 6px;
  padding: 3px 14px;
}
.mixer-label {
  font-size: 10px; color: var(--text3); text-transform: uppercase;
  letter-spacing: .06em; min-width: 72px; flex-shrink: 0;
}
.mixer-range { flex: 1; accent-color: var(--accent); min-width: 0; }
.mixer-range-val {
  font-size: 10px; color: var(--text2); min-width: 28px;
  text-align: right; font-variant-numeric: tabular-nums;
}
.mixer-color {
  width: 28px; height: 22px; border: none; padding: 0;
  border-radius: 4px; cursor: pointer; background: none;
}
.mixer-select, .mixer-seed-input {
  flex: 1; background: var(--surface3); border: 1px solid var(--border2);
  color: var(--text); border-radius: 5px; padding: 4px 6px; font-size: 11px;
}
.mixer-seed-input { max-width: 80px; }
.mixer-check-label {
  display: flex; align-items: center; gap: 6px;
  padding: 3px 14px; font-size: 11px; color: var(--text2);
  cursor: pointer;
}
.mixer-check-label input { accent-color: var(--accent); }
.mixer-divider {
  font-size: 9px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .1em; color: var(--text3);
  padding: 6px 14px 2px;
}

/* Mixer mode button in toolbar */
.mixer-btn {
  display: flex; align-items: center; gap: 5px;
  padding: 5px 10px; border-radius: 6px;
  border: 1px solid var(--border2); background: var(--surface2);
  color: var(--text2); font-size: 11px; font-weight: 600;
  cursor: pointer; transition: all .15s;
}
.mixer-btn:hover { border-color: var(--accent); color: var(--accent); }
.mixer-btn.active {
  border-color: var(--success); background: rgba(34,211,160,.1);
  color: var(--success);
}