/* ═══════════════════════════════════════════════════════
   PTU — Design System v2  (深色精緻)
   Palette: #0b0b0f base · #3b82f6 accent · Inter type
   ═══════════════════════════════════════════════════════ */

:root {
  /* Surface scale — deepest to most elevated */
  --bg:   #0b0b0f;
  --s0:   #0f0f14;
  --s1:   #141419;
  --s2:   #1a1a22;
  --s3:   #22222c;
  --s4:   #2b2b38;
  --s5:   #34344a;

  /* Borders */
  --b0:  rgba(255,255,255,0.055);
  --b1:  rgba(255,255,255,0.10);
  --b2:  rgba(255,255,255,0.17);

  /* Accent — original brand blue */
  --accent:      #3b82f6;
  --accent-h:    #60a5fa;
  --accent-d:    #2563eb;
  --accent-bg:   rgba(59,130,246,0.09);
  --accent-ring: rgba(59,130,246,0.28);

  /* Text */
  --t0: #eaeaf2;
  --t1: #7676a0;
  --t2: #3e3e5a;

  /* State */
  --danger:  #ff6060;
  --success: #52e5a5;

  /* Transparency checkerboard (canvas backdrop) */
  --checker-a: #111;
  --checker-b: #1c1c1c;

  /* Shadows */
  --sh-sm: 0 2px 8px rgba(0,0,0,0.45);
  --sh-md: 0 8px 24px rgba(0,0,0,0.55);
  --sh-lg: 0 20px 50px rgba(0,0,0,0.65);
  --sh-panel: 0 0 0 1px var(--b1), var(--sh-lg);

  /* ── Legacy aliases so existing JS CSS-var references keep working ── */
  --bg-color:         var(--bg);
  --panel-bg:         var(--s1);
  --panel-bg-2:       var(--s2);
  --toolbar-bg:       rgba(14,14,19,0.94);
  --border-color:     var(--b0);
  --text-primary:     var(--t0);
  --text-secondary:   var(--t1);
  --text-muted:       var(--t2);
  --accent-color:     var(--accent);
  --accent-hover:     var(--accent-h);
  --accent-soft:      var(--accent-bg);
  --primary-btn:      var(--accent);
  --primary-btn-text: #fff;
  --control-bg:       var(--s2);
  --control-bg-hover: var(--s3);
  --focus-ring:       0 0 0 2.5px var(--accent-ring);
  --panel-shadow:     var(--sh-panel);
  --brand-blue:       var(--accent);
  --brand-blue-hover: var(--accent-h);
  --brand-blue-soft:  var(--accent-bg);
}

/* ──────────────────────────────────────────────────────
   Light theme — overrides only the base tokens; every semantic
   alias above is derived from these, so the whole UI re-tints.
   Activated by <html data-theme="light">.
   ────────────────────────────────────────────────────── */
:root[data-theme="light"] {
  /* Surfaces: light-gray canvas backdrop, white panels (Photoshop-web feel) */
  --bg:   #d9d9dd;
  --s0:   #ececef;
  --s1:   #ffffff;
  --s2:   #f5f5f7;
  --s3:   #ececef;
  --s4:   #e1e1e6;
  --s5:   #d4d4dc;

  /* Borders: dark alpha instead of white alpha */
  --b0:  rgba(0,0,0,0.09);
  --b1:  rgba(0,0,0,0.13);
  --b2:  rgba(0,0,0,0.22);

  /* Text: dark on light */
  --t0: #1d1d24;
  --t1: #63636f;
  --t2: #a2a2ac;

  /* Softer, lighter shadows */
  --sh-sm: 0 1px 4px rgba(0,0,0,0.10);
  --sh-md: 0 6px 20px rgba(0,0,0,0.13);
  --sh-lg: 0 16px 42px rgba(0,0,0,0.16);

  --toolbar-bg: rgba(255,255,255,0.92);

  /* Light-gray transparency checkerboard (like Photoshop's light theme) */
  --checker-a: #ffffff;
  --checker-b: #d5d5da;

  /* accent stays the same blue — it reads well on light too */
}

/* ──────────────────────────────────────────────────────
   Reset & Base
   ────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--t0);
  overflow: hidden;
  height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

#app { display: flex; flex-direction: column; height: 100vh; }

/* ──────────────────────────────────────────────────────
   Top Title Bar (brand only)
   ────────────────────────────────────────────────────── */
.top-bar {
  height: 56px;
  background: var(--s0);
  border-bottom: 1px solid var(--b0);
  display: flex;
  align-items: center;
  padding: 0 22px;
  flex-shrink: 0;
  user-select: none;
  z-index: 200;
}

.top-bar .brand { display: flex; align-items: center; gap: 12px; }

.top-bar .brand-logo {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  overflow: hidden;
  flex-shrink: 0;
  background: #1a2a4a;
  border: 1px solid rgba(59,130,246,0.25);
}
.top-bar .brand-logo img { width: 100%; height: 100%; object-fit: cover; object-position: center; display: block; }

.top-bar .brand-name {
  font-size: 19px;
  font-weight: 700;
  color: var(--t0);
  letter-spacing: 0.02em;
}

/* ──────────────────────────────────────────────────────
   Top Navigation
   ────────────────────────────────────────────────────── */
.top-menu {
  height: 38px;
  background: var(--s0);
  border-bottom: 1px solid var(--b0);
  display: flex;
  align-items: center;
  padding: 0 14px;
  gap: 0;
  flex-shrink: 0;
  user-select: none;
  z-index: 200;
}

.top-menu .brand {
  margin-right: 16px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 0;
}

.top-menu .menu-group { display: flex; gap: 0; }

.menu-btn {
  background: transparent;
  border: none;
  color: var(--t1);
  cursor: pointer;
  font-size: 12.5px;
  font-family: inherit;
  padding: 4px 10px;
  border-radius: 5px;
  height: 26px;
  display: flex;
  align-items: center;
  transition: color 0.13s, background 0.13s;
}

.menu-btn:hover:not(:disabled) { color: var(--t0); background: var(--s3); }
.menu-btn:disabled { opacity: 0.35; cursor: not-allowed; }

/* Universal focus ring */
.menu-btn:focus-visible,
.tool-btn:focus-visible,
.layer-action-btn:focus-visible,
.layer-icon-btn:focus-visible,
.layer-link-btn:focus-visible,
button:focus-visible,
select:focus-visible,
input:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-color: var(--accent) !important;
}

/* ──────────────────────────────────────────────────────
   Dropdown Menu
   ────────────────────────────────────────────────────── */
.menu-item { position: relative; display: inline-block; }

.dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 3px);
  left: 0;
  background: var(--s2);
  min-width: 170px;
  box-shadow: var(--sh-panel);
  z-index: 9999;
  border: 1px solid var(--b1);
  border-radius: 9px;
  padding: 5px;
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
}

.menu-item:hover .dropdown { display: block; }

.dropdown-item {
  padding: 7px 11px;
  font-size: 12.5px;
  font-family: inherit;
  color: var(--t0);
  text-align: left;
  background: none;
  border: none;
  width: 100%;
  cursor: pointer;
  border-radius: 6px;
  transition: background 0.1s, color 0.1s;
}

.dropdown-item:hover:not(:disabled) {
  background: var(--accent-bg);
  color: var(--accent-h);
}

.dropdown-item:disabled { opacity: 0.32; cursor: not-allowed; }
.dropdown-divider { height: 1px; background: var(--b0); margin: 4px 0; }

/* Canvas right-click layer picker: same look as .dropdown, but summoned at an
   arbitrary point (inline left/top) instead of hanging off a .menu-item. */
.canvas-layer-picker.dropdown {
  position: fixed;
  display: block;
  top: auto;
  left: auto;
  z-index: 10500;
  max-height: 320px;
  overflow-y: auto;
}
.dropdown-item.active-pick { color: var(--accent-h); font-weight: 600; }

/* ──────────────────────────────────────────────────────
   Levels tool: Photoshop-style draggable triangle handles,
   positioned via inline left% (see LevelsTool.js syncUI()).
   ────────────────────────────────────────────────────── */
.lv-track { position: relative; width: 256px; height: 14px; }
.lv-handle {
  position: absolute;
  top: 0;
  width: 0;
  height: 0;
  border-left: 7px solid transparent;
  border-right: 7px solid transparent;
  border-bottom: 11px solid #888; /* points up, into the histogram/gradient above */
  transform: translateX(-7px);
  cursor: ew-resize;
}
.lv-handle-black { border-bottom-color: #111; }
.lv-handle-white { border-bottom-color: #ddd; }
.lv-handle-gamma { border-bottom-color: #999; }

/* ──────────────────────────────────────────────────────
   Adjustment-layer modal close (×) button — every modal
   header gets one, wired to that tool's own cancelModal().
   ────────────────────────────────────────────────────── */
.modal-close-btn {
  background: none;
  border: none;
  color: var(--t1, #999);
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  padding: 2px 7px;
  border-radius: 4px;
  flex-shrink: 0;
  transition: background 0.13s, color 0.13s;
}
.modal-close-btn:hover { background: var(--accent-bg, rgba(255,255,255,0.08)); color: var(--t0, #fff); }

/* ──────────────────────────────────────────────────────
   Tool Settings Bar
   ────────────────────────────────────────────────────── */
.tool-settings-bar {
  height: 46px !important;
  background: var(--s1) !important;
  border-bottom: 1px solid var(--b0) !important;
  display: flex !important;
  align-items: center !important;
  padding: 0 14px !important;
  flex-shrink: 0 !important;
  overflow: hidden !important;
  scrollbar-width: none;
  gap: 0 !important;
}

.tool-settings-bar::-webkit-scrollbar { display: none; }

.doc-settings {
  display: flex !important;
  gap: 6px !important;
  align-items: center !important;
  height: 100% !important;
  border-right: 1px solid var(--b0) !important;
  padding-right: 12px !important;
  margin-right: 12px !important;
}

/* ──────────────────────────────────────────────────────
   Main Layout
   ────────────────────────────────────────────────────── */
.main-content { display: flex; flex: 1; overflow: hidden; }

/* ──────────────────────────────────────────────────────
   Workspace & Rulers
   ────────────────────────────────────────────────────── */
.workspace-wrapper { flex: 1; position: relative; overflow: hidden; background: var(--bg); }

.workspace {
  position: absolute;
  top: 20px; left: 20px; right: 0; bottom: 0;
  overflow: auto;
  background: var(--bg);
}

.ruler-corner {
  position: absolute;
  top: 0; left: 0;
  width: 20px; height: 20px;
  background: var(--s0);
  border-right: 1px solid var(--b0);
  border-bottom: 1px solid var(--b0);
  z-index: 22; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.15s;
}
.ruler-corner:hover { background: var(--s3); }

.ruler-h {
  position: absolute;
  top: 0; left: 20px; right: 0; height: 20px;
  z-index: 21; cursor: s-resize; display: block;
  border-bottom: 1px solid var(--b0);
}

.ruler-v {
  position: absolute;
  top: 20px; left: 0; width: 20px; bottom: 0;
  z-index: 21; cursor: e-resize; display: block;
  border-right: 1px solid var(--b0);
}

/* ──────────────────────────────────────────────────────
   Start Screen
   ────────────────────────────────────────────────────── */
.start-screen {
  display: flex;
  gap: 0;
  background: var(--s1);
  border-radius: 14px;
  border: 1px solid var(--b1);
  max-width: 860px;
  width: 92%;
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  box-shadow: var(--sh-lg), 0 0 0 1px var(--b0) inset;
  z-index: 100;
  overflow: hidden;
}

.upload-area {
  flex: 1;
  border: none;
  border-right: 1px solid var(--b0);
  border-radius: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  transition: background 0.22s;
  min-height: 430px;
  background: transparent;
  padding: 40px 36px;
  position: relative;
}

.upload-area::before {
  content: '';
  position: absolute;
  inset: 18px;
  border: 1.5px dashed var(--b1);
  border-radius: 10px;
  pointer-events: none;
  transition: border-color 0.22s, opacity 0.22s;
}

.upload-area:hover { background: var(--accent-bg); }
.upload-area:hover::before { border-color: rgba(107,143,255,0.45); }

.upload-content {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  pointer-events: none;
  position: relative;
  z-index: 1;
}

.upload-icon { color: var(--t2); transition: color 0.22s; }
.upload-area:hover .upload-icon { color: var(--accent); }

.upload-content h2 {
  font-size: 16px;
  font-weight: 600;
  color: var(--t0);
  letter-spacing: -0.01em;
}

.upload-content p {
  color: var(--t1);
  font-size: 12.5px;
  line-height: 1.6;
}

.new-doc-area {
  width: 272px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 24px 20px;
  background: var(--s0);
}

.new-doc-area h2 {
  font-size: 13px;
  font-weight: 600;
  color: var(--t0);
  letter-spacing: 0.01em;
  margin-bottom: 2px;
}

.size-inputs { display: flex; gap: 8px; }

.input-group { display: flex; flex-direction: column; gap: 6px; flex: 1; }

.input-group label {
  font-size: 10.5px;
  color: var(--t1);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
}

.input-wrapper { position: relative; display: flex; align-items: center; }

.input-wrapper input {
  width: 100%;
  background: var(--s2);
  border: 1px solid var(--b0);
  color: var(--t0);
  padding: 8px 26px 8px 10px;
  border-radius: 6px;
  font-size: 13px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s;
  -moz-appearance: textfield;
}
.input-wrapper input::-webkit-inner-spin-button,
.input-wrapper input::-webkit-outer-spin-button { -webkit-appearance: none; }
.input-wrapper input:focus { border-color: var(--accent); }

.input-wrapper span {
  position: absolute;
  right: 8px;
  color: var(--t1);
  pointer-events: none;
  font-size: 11px;
}

.templates-section { display: flex; flex-direction: column; gap: 5px; flex-grow: 1; }

.templates-section > label {
  font-size: 10.5px;
  color: var(--t1);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
  margin-bottom: 3px;
}

.template-item {
  padding: 9px 12px;
  background: var(--s2);
  border: 1px solid var(--b0);
  border-radius: 7px;
  cursor: pointer;
  transition: border-color 0.13s, background 0.13s;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.template-item:hover { border-color: var(--b1); background: var(--s3); }
.template-item.selected { border-color: var(--accent); background: var(--accent-bg); }
.template-item.selected .tpl-title { color: var(--accent-h); }

.tpl-title { color: var(--t0); font-size: 12px; font-weight: 500; }
.tpl-size  { color: var(--t1); font-size: 11px; font-variant-numeric: tabular-nums; }

.btn-create {
  margin-top: auto;
  padding: 10px;
  font-size: 13px;
  font-weight: 600;
  width: 100%;
  cursor: pointer;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-family: inherit;
  letter-spacing: 0.01em;
  transition: background 0.15s, box-shadow 0.15s;
}
.btn-create:hover { background: var(--accent-h); box-shadow: 0 4px 18px var(--accent-ring); }

.btn-primary {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 7px;
  font-family: inherit;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, box-shadow 0.15s;
}
.btn-primary:hover:not(:disabled) { background: var(--accent-h); }
.btn-primary:disabled { opacity: 0.42; cursor: not-allowed; }

/* ──────────────────────────────────────────────────────
   Canvas
   ────────────────────────────────────────────────────── */
.canvas-container {
  position: relative;
  box-shadow: var(--sh-lg), 0 0 0 1px rgba(255,255,255,0.05);
  background: var(--checker-a);
  background-image:
    linear-gradient(45deg, var(--checker-b) 25%, transparent 25%, transparent 75%, var(--checker-b) 75%),
    linear-gradient(45deg, var(--checker-b) 25%, transparent 25%, transparent 75%, var(--checker-b) 75%);
  background-size: 18px 18px;
  background-position: 0 0, 9px 9px;
  margin: 40px auto;
  isolation: isolate;
  contain: layout style;
  will-change: width, height;
}

.canvas-container.is-animating {
  box-shadow: none !important;
  background-image: none !important;
  background-color: var(--checker-a) !important;
}

#baseCanvas, #interactionCanvas { position: absolute; top: 0; left: 0; }
#baseCanvas { z-index: 1; image-rendering: smooth; contain: strict; }

#layersContainer {
  position: absolute; top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 2; pointer-events: none;
}
#layersContainer img { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }
#interactionCanvas { z-index: 10; cursor: crosshair; contain: strict; }

/* ──────────────────────────────────────────────────────
   Floating Toolbar
   ────────────────────────────────────────────────────── */
.floating-toolbar {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--s1);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--b1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  padding: 4px;
  gap: 2px;
  box-shadow: var(--sh-lg), 0 0 0 1px var(--b0) inset;
  z-index: 100;
}

.drag-handle {
  padding: 0 6px;
  cursor: grab;
  display: flex; align-items: center;
  opacity: 0.35;
  transition: opacity 0.15s;
}
.drag-handle:hover { opacity: 0.65; }

.dots {
  width: 4px; height: 18px;
  background-image: radial-gradient(circle, var(--t1) 1px, transparent 1px);
  background-size: 4px 5px;
}

/* ──────────────────────────────────────────────────────
   Buttons
   ────────────────────────────────────────────────────── */
.tool-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--t0);
  padding: 7px 13px;
  border-radius: 7px;
  font-size: 12.5px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  gap: 6px;
  white-space: nowrap;
  transition: background 0.12s, border-color 0.12s, color 0.12s, box-shadow 0.12s;
}

.tool-btn:hover:not(:disabled) { background: var(--s3); border-color: var(--b1); }
.tool-btn:disabled { opacity: 0.38; cursor: not-allowed; }

.tool-btn.primary {
  background: var(--accent);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 2px 8px var(--accent-ring);
}
.tool-btn.primary:hover:not(:disabled) {
  background: var(--accent-h);
  box-shadow: 0 4px 18px var(--accent-ring);
}

.tool-btn.icon-only { padding: 7px; width: 34px; height: 34px; }

.tool-btn.active {
  background: var(--accent-bg);
  border-color: rgba(107,143,255,0.32);
  color: var(--accent-h);
}

.tool-btn svg, .layer-action-btn svg, .layer-icon-btn svg, .layer-link-btn svg {
  display: block; pointer-events: none;
}

.btn-icon { display: inline-flex; align-items: center; }

/* ──────────────────────────────────────────────────────
   Divider
   ────────────────────────────────────────────────────── */
.divider { width: 1px; height: 20px; background: var(--b0); margin: 0 3px; flex-shrink: 0; }

/* ──────────────────────────────────────────────────────
   Prompt / AI inputs
   ────────────────────────────────────────────────────── */
.prompt-preset-select {
  background: var(--s3);
  border: 1px solid var(--b0);
  color: var(--t1);
  padding: 6px 8px;
  border-radius: 7px;
  font-size: 12px;
  font-family: inherit;
  width: 100px;
  outline: none;
  cursor: pointer;
  transition: border-color 0.13s, color 0.13s;
  flex-shrink: 0;
}
.prompt-preset-select:hover,
.prompt-preset-select:focus { border-color: var(--accent); color: var(--t0); }

.prompt-input {
  background: var(--s3);
  border: 1px solid var(--b0);
  color: var(--t0);
  padding: 6px 11px;
  border-radius: 7px;
  font-size: 12.5px;
  font-family: inherit;
  width: 200px;
  outline: none;
  transition: border-color 0.13s;
}
.prompt-input:focus { border-color: var(--accent); }

/* ──────────────────────────────────────────────────────
   Form Controls (global)
   ────────────────────────────────────────────────────── */
input[type="number"],
input[type="text"],
input[type="password"],
select,
.text-input,
.engine-select {
  background-color: var(--s2) !important;
  color: var(--t0) !important;
  border: 1px solid var(--b0) !important;
  border-radius: 6px !important;
  font-family: inherit;
  transition: border-color 0.13s, box-shadow 0.13s;
}

input[type="number"]:hover,
input[type="text"]:hover,
input[type="password"]:hover,
select:hover,
.text-input:hover { border-color: var(--b1) !important; }

input[type="number"]:focus,
input[type="text"]:focus,
input[type="password"]:focus,
select:focus,
.text-input:focus {
  border-color: var(--accent) !important;
  box-shadow: var(--focus-ring) !important;
  outline: none;
}

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

/* Global range-input thumb — class-specific rules below override as needed */
input[type="range"] {
  -webkit-appearance: none; appearance: none;
  outline: none; cursor: pointer;
  border: none !important; box-shadow: none !important;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 13px; height: 13px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--t0);
  cursor: pointer;
  box-shadow: 0 1px 5px rgba(0,0,0,0.55), 0 0 0 2px var(--accent-ring);
  transition: transform 0.1s, box-shadow 0.1s;
}
input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 2px 10px rgba(0,0,0,0.6), 0 0 0 3px var(--accent-ring);
}
input[type="range"]::-moz-range-thumb {
  width: 13px; height: 13px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--t0);
  cursor: pointer;
}

/* Color Mixer tabs */
.cm-tab {
  cursor: pointer;
  padding-bottom: 8px;
  border-bottom: 2px solid transparent;
  font-size: 13px;
  font-family: inherit;
  flex: 1; text-align: center;
  color: var(--t1);
  transition: color 0.13s, border-color 0.13s;
  user-select: none;
}
.cm-tab:hover { color: var(--t0); }
.cm-tab.active { color: var(--t0); border-bottom-color: var(--accent); }

/* Colour Mixer — mixer / point-colour mode switch */
.cm-mode-tab {
  cursor: pointer;
  font-size: 13px;
  color: var(--t1);
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
  transition: color 0.13s, border-color 0.13s;
  user-select: none;
}
.cm-mode-tab:hover { color: var(--t0); }
.cm-mode-tab.active { color: var(--t0); border-bottom-color: var(--accent); }

/* Point colour — eyedropper + sampled swatches */
.cm-eyedropper {
  flex: none;
  width: 26px; height: 26px;
  display: flex; align-items: center; justify-content: center;
  background: transparent;
  border: 1px solid var(--b1);
  border-radius: 5px;
  color: var(--t1);
  cursor: pointer;
  transition: color 0.13s, border-color 0.13s, background 0.13s;
}
.cm-eyedropper:hover { color: var(--t0); border-color: var(--b2, var(--b1)); }
.cm-eyedropper.active {
  color: #fff;
  background: var(--accent);
  border-color: var(--accent);
}

.cm-swatch {
  width: 22px; height: 22px;
  border-radius: 4px;
  border: 1px solid var(--b1);
  cursor: pointer;
  padding: 0;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,0.18);
}
.cm-swatch.active { box-shadow: 0 0 0 2px var(--accent); }

/* ──────────────────────────────────────────────────────
   Zoom Widget
   ────────────────────────────────────────────────────── */
.zoom-widget { display: flex; align-items: center; border-radius: 6px; padding: 0 2px; }

.zoom-widget button {
  background: transparent; border: none;
  color: var(--t1); padding: 3px 6px;
  cursor: pointer; border-radius: 4px;
  font-size: 15px; font-weight: bold;
  transition: background 0.12s, color 0.12s;
}
.zoom-widget button:hover { background: var(--s3); color: var(--t0); }

.zoom-widget span {
  font-size: 12.5px;
  font-variant-numeric: tabular-nums;
  min-width: 44px;
  text-align: center;
  user-select: none;
  color: var(--t1);
  cursor: pointer;
  transition: color 0.12s;
}
.zoom-widget span:hover { color: var(--t0); }

/* ──────────────────────────────────────────────────────
   Brush / Tool Settings (toolbar context bar)
   ────────────────────────────────────────────────────── */
.brush-settings { display: flex; align-items: center; gap: 8px; }

.brush-slider-group { display: flex; align-items: center; gap: 4px; }

.brush-slider-group label {
  font-size: 11px;
  color: var(--t1);
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.brush-slider {
  width: 70px;
  -webkit-appearance: none;
  appearance: none;
  height: 3px;
  background: var(--s5);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}
.brush-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 11px; height: 11px;
  background: var(--accent);
  border: 2px solid var(--t0);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 1px 4px rgba(0,0,0,0.5);
  transition: transform 0.1s;
}
.brush-slider::-webkit-slider-thumb:hover { transform: scale(1.2); }

.brush-val {
  font-size: 10.5px;
  color: var(--t1);
  width: 38px; min-width: 38px; max-width: 38px;
  flex-shrink: 0;
  text-align: right;
  font-variant-numeric: tabular-nums;
  overflow: hidden; white-space: nowrap;
}

/* ── Text Tool Toolbar ── */
.txt-toolbar-sep {
  width: 1px; height: 20px; flex-shrink: 0;
  background: var(--b1); margin: 0 4px;
}

/* Font picker input (replaces brush-val on textFont) */
.font-picker-wrap { position: relative; display: flex; align-items: center; }

.font-picker-input {
  width: 140px !important; min-width: 0; max-width: none !important;
  background: var(--s3) !important;
  border: 1px solid var(--b1) !important;
  border-radius: 7px !important;
  color: var(--t0) !important;
  padding: 4px 22px 4px 9px !important;
  font-size: 12.5px !important;
  font-family: inherit !important;
  box-shadow: none !important;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  cursor: pointer; height: 28px;
}
.font-picker-input:hover { background: var(--s4) !important; border-color: var(--b2) !important; }
.font-picker-input:focus { border-color: var(--accent) !important; box-shadow: var(--focus-ring) !important; }

.font-picker-chevron {
  position: absolute; right: 7px; top: 50%;
  transform: translateY(-50%);
  pointer-events: none; color: var(--t1);
  display: flex; align-items: center;
}

#fontDropdown {
  background: var(--s2) !important;
  border: 1px solid var(--b1) !important;
  border-radius: 9px !important;
  box-shadow: var(--sh-lg) !important;
  max-height: 400px !important;
  overflow-y: auto;
}

/* Spinbox (大小 / 間距 / 行高) */
.txt-spinbox {
  display: flex; align-items: stretch;
  background: var(--s3);
  border: 1px solid var(--b1);
  border-radius: 7px; overflow: hidden; height: 28px;
}
.txt-spinbox input[type="number"] {
  width: 46px !important;
  background: transparent !important;
  border: none !important; box-shadow: none !important;
  color: var(--t0) !important;
  padding: 0 4px !important; text-align: center;
  font-size: 12.5px; font-family: inherit;
  -moz-appearance: textfield;
}
.txt-spinbox input[type="number"]::-webkit-inner-spin-button,
.txt-spinbox input[type="number"]::-webkit-outer-spin-button { -webkit-appearance: none; }
.txt-spinbox-arrow {
  position: relative; width: 20px;
  display: flex; align-items: center; justify-content: center;
  border-left: 1px solid var(--b0); cursor: pointer; flex-shrink: 0;
  color: var(--t2); transition: background 0.12s, color 0.12s;
}
.txt-spinbox-arrow:hover { background: var(--s4); color: var(--t0); }
.txt-spinbox-arrow select {
  position: absolute; inset: 0; opacity: 0; cursor: pointer;
  width: 100%; height: 100%;
}
.txt-spinbox-arrow svg { pointer-events: none; }

.brush-cursor-preview {
  position: fixed;
  border: 1px solid rgba(255,255,255,0.65);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  mix-blend-mode: difference;
}

/* ──────────────────────────────────────────────────────
   Color Picker Widget (toolbar FG/BG swatches)
   ────────────────────────────────────────────────────── */
.color-picker-widget { position: relative; width: 28px; height: 28px; margin: 0 5px; }

.color-picker-bg, .color-picker-fg {
  position: absolute;
  width: 18px; height: 18px;
  border: 1px solid rgba(255,255,255,0.65);
  border-radius: 3px;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0,0,0,0.55);
}
.color-picker-bg { bottom: 0; right: 0; z-index: 1; background: #fff; }
.color-picker-fg { top: 0; left: 0; z-index: 2; background: #000; }

.color-picker-widget input[type="color"] {
  position: absolute; top: -10px; left: -10px;
  width: 40px; height: 40px;
  padding: 0; margin: 0; border: none;
  cursor: pointer; -webkit-appearance: none; appearance: none; background: transparent;
}
.color-picker-widget input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
.color-picker-widget input[type="color"]::-webkit-color-swatch { border: none; }

.color-swap {
  position: absolute; top: -6px; right: -6px; z-index: 3;
  width: 14px; height: 14px;
  display: flex; align-items: center; justify-content: center;
  color: var(--t1); cursor: pointer;
  transition: color 0.13s;
}
.color-swap:hover { color: var(--t0); }

.color-default {
  position: absolute; bottom: -4px; left: -4px; z-index: 3;
  width: 12px; height: 12px; cursor: pointer;
}
.color-default .def-bg, .color-default .def-fg {
  position: absolute; width: 8px; height: 8px;
  border: 1px solid var(--t1); border-radius: 1px;
}
.color-default .def-bg { background: #fff; bottom: 0; right: 0; }
.color-default .def-fg { background: #000; top: 0; left: 0; }
.color-default:hover .def-bg,
.color-default:hover .def-fg { border-color: var(--t0); }

/* ──────────────────────────────────────────────────────
   Right Icon Rail (file / export / API actions)
   ────────────────────────────────────────────────────── */
.right-rail {
  width: 44px;
  background: var(--s0);
  border-left: 1px solid var(--b0);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 8px 0;
  flex-shrink: 0;
  z-index: 150;
}

.rail-btn {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 8px;
  color: var(--t1);
  cursor: pointer;
  padding: 0;
  overflow: hidden;
  transition: color 0.13s, background 0.13s, border-color 0.13s;
}

.rail-btn:hover:not(:disabled) { color: var(--t0); background: var(--s3); }
.rail-btn:disabled { opacity: 0.32; cursor: not-allowed; }
.rail-btn.active { color: var(--accent-h); background: var(--accent-bg); }
.rail-btn svg { width: 20px; height: 20px; flex-shrink: 0; }
.rail-divider { width: 22px; height: 1px; background: var(--b0); margin: 3px 0; flex-shrink: 0; }
/* Pushed to the foot of the rail (help) */
.rail-btn-bottom { margin-top: auto; }

/* Before a document exists, the top settings bar is inert & greyed */
body.no-document #toolSettingsBar {
  opacity: 0.4;
  pointer-events: none;
}

/* Docked side panels (share look with the layers panel; toggled via the rail) */
.side-panel {
  width: 268px;
  background: var(--s1);
  border-left: 1px solid var(--b0);
  display: flex;
  flex-direction: column;
}
.side-panel-header {
  padding: 11px 14px 10px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--t0);
  letter-spacing: -0.01em;
  border-bottom: 1px solid var(--b0);
  flex-shrink: 0;
}
.side-panel-body {
  flex: 1;
  overflow-y: auto;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.side-panel-footer {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  padding: 10px 14px;
  border-top: 1px solid var(--b0);
  flex-shrink: 0;
}

/* Export panel sections */
.export-section { display: flex; flex-direction: column; gap: 9px; }
.export-section-title {
  font-size: 11px;
  font-weight: 600;
  color: var(--t1);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.export-section-head { display: flex; align-items: center; justify-content: space-between; }
.export-quality-num { display: flex; align-items: center; gap: 3px; }
.export-quality-num input {
  width: 46px;
  padding: 3px 6px;
  text-align: center;
  font-size: 12.5px;
  background: var(--s3);
  color: var(--t0);
  border: 1px solid var(--b0);
  border-radius: 5px;
  outline: none;
  -moz-appearance: textfield;
}
.export-quality-num span { font-size: 12px; color: var(--t1); }

/* Document / canvas size panel */
.docsize-row { display: flex; align-items: center; gap: 6px; }
.docsize-input {
  width: 100%;
  min-width: 0;
  padding: 6px 8px;
  text-align: center;
  font-size: 13px;
  background: var(--s3);
  color: var(--t0);
  border: 1px solid var(--b0);
  border-radius: 6px;
  outline: none;
  -moz-appearance: textfield;
}
.docsize-input:focus { border-color: var(--accent); }
.docsize-x { font-size: 12px; color: var(--t1); flex-shrink: 0; }
.docsize-apply { width: 100%; justify-content: center; margin-top: 2px; }

/* Theme segmented toggle (settings panel) */
.theme-toggle {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  padding: 3px;
  background: var(--s3);
  border: 1px solid var(--b0);
  border-radius: 8px;
}
.theme-opt {
  padding: 7px 4px;
  background: transparent;
  border: none;
  border-radius: 6px;
  color: var(--t1);
  font-size: 12.5px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.13s, color 0.13s;
}
.theme-opt:hover { color: var(--t0); }
.theme-opt.active {
  background: var(--accent);
  color: #fff;
}

/* Brush tip live preview (size / softness) */
.brush-preview-wrap {
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  border: 1px solid var(--b1);
  border-radius: 7px;
  background: var(--s3);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
#brushPreview { display: block; width: 28px; height: 28px; }

/* Vector / text layer type badge in the layer list */
.layer-type-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-left: 6px;
  color: var(--accent);
  opacity: 0.9;
}

/* Format button grid */
.format-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
.format-btn {
  padding: 9px 4px;
  background: var(--s3);
  border: 1px solid var(--b0);
  border-radius: 8px;
  color: var(--t1);
  font-size: 12.5px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.13s, color 0.13s, border-color 0.13s;
}
.format-btn:hover { color: var(--t0); background: var(--s5); }
.format-btn.active {
  background: var(--t0);
  color: var(--s0);
  border-color: var(--t0);
}

/* Estimated size row */
.export-estsize {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 12px;
  border-top: 1px solid var(--b0);
  font-size: 13px;
  color: var(--t1);
}
.export-estsize span:last-child { color: var(--t0); font-weight: 500; }

/* ──────────────────────────────────────────────────────
   Layers Panel (right sidebar)
   ────────────────────────────────────────────────────── */
.layers-panel {
  width: 268px;
  background: var(--s1);
  border-left: 1px solid var(--b0);
  display: flex;
  flex-direction: column;
}

.panel-header {
  padding: 12px 14px;
  font-weight: 600;
  font-size: 13px;
  border-bottom: 1px solid var(--b0);
}

.panel-tabs {
  display: flex !important;
  background: var(--s0) !important;
  border-bottom: 1px solid var(--b0) !important;
  flex-shrink: 0 !important;
  padding: 0 8px !important;
  gap: 0 !important;
}

.panel-tab {
  flex: 1;
  padding: 9px 0 !important;
  text-align: center;
  cursor: pointer;
  font-size: 11.5px !important;
  font-weight: 500 !important;
  color: var(--t1) !important;
  border-bottom: 2px solid transparent !important;
  transition: color 0.13s, border-color 0.13s;
  user-select: none;
  letter-spacing: 0.01em;
}
.panel-tab:hover { color: var(--t0) !important; }
.panel-tab.active {
  color: var(--t0) !important;
  border-bottom-color: var(--accent) !important;
}

/* ──────────────────────────────────────────────────────
   Blend Mode & Opacity
   ────────────────────────────────────────────────────── */
.blend-mode-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border-bottom: 1px solid var(--b0);
}

.blend-mode-bar label {
  font-size: 10px;
  color: var(--t1);
  white-space: nowrap;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  flex-shrink: 0;
}

.blend-mode-bar select {
  flex: 1;
  background: transparent !important;
  border: none !important;
  color: var(--t0) !important;
  font-size: 12px;
  padding: 2px 4px;
  border-radius: 4px;
  outline: none;
  cursor: pointer;
  font-family: inherit;
  -webkit-appearance: none;
  appearance: none;
  min-width: 0;
  box-shadow: none !important;
}
.blend-mode-bar select:hover { color: var(--accent-h) !important; }

.opacity-slider {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 3px;
  background: var(--s5);
  border-radius: 2px;
  outline: none; cursor: pointer;
}
.opacity-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 11px; height: 11px;
  background: var(--accent);
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid var(--t0);
  box-shadow: 0 1px 4px rgba(0,0,0,0.4);
  transition: transform 0.1s;
}
.opacity-slider::-webkit-slider-thumb:hover { transform: scale(1.2); }
.opacity-slider::-moz-range-thumb {
  width: 11px; height: 11px;
  background: var(--accent);
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid var(--t0);
}

.opacity-value {
  font-size: 11px;
  color: var(--t0);
  width: 34px; min-width: 34px; max-width: 34px;
  flex-shrink: 0; text-align: right;
  font-variant-numeric: tabular-nums;
}

/* ──────────────────────────────────────────────────────
   Layers List & Items
   ────────────────────────────────────────────────────── */
.layers-list {
  flex: 1;
  overflow-y: auto;
  padding: 7px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow-anchor: none;
}

.layer-item {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  padding: 5px 6px;
  background: transparent;
  border-radius: 7px;
  border: 1px solid transparent;
  cursor: pointer;
  min-height: 44px;
  transition: background 0.12s, border-color 0.12s, opacity 0.12s;
}

.layer-item:hover { background: var(--s3); }

.layer-item.active {
  border-color: rgba(107,143,255,0.38);
  background: var(--accent-bg);
}

.layer-item.is-child { padding-left: 26px; }

.layer-main-row {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
}

.raw-filter-row {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-top: 4px;
  padding: 3px 4px 3px 40px;
  color: var(--t1);
  font-size: 10.5px;
  border-top: 1px solid var(--b0);
  cursor: default;
  user-select: none;
  border-radius: 4px;
  transition: background 0.1s, color 0.1s;
}
.raw-filter-row:hover { background: var(--s4); color: var(--accent-h); }
.raw-filter-row svg { flex-shrink: 0; opacity: 0.5; }

.layer-folder-toggle {
  width: 18px; height: 18px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; color: var(--t1);
  transition: transform 0.18s, color 0.13s;
}
.layer-folder-toggle:hover { color: var(--t0); }
.layer-folder-toggle.collapsed { transform: rotate(-90deg); }

.layer-folder-icon {
  width: 32px; height: 32px;
  background: var(--s3);
  border-radius: 5px;
  display: flex; align-items: center; justify-content: center;
  color: var(--t1);
  flex-shrink: 0;
}

.layer-thumb {
  width: 32px; height: 32px;
  flex-shrink: 0;
  background: var(--checker-a);
  border-radius: 5px;
  overflow: hidden;
  display: flex; justify-content: center; align-items: center;
  background-image:
    linear-gradient(45deg, var(--checker-b) 25%, transparent 25%),
    linear-gradient(-45deg, var(--checker-b) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--checker-b) 75%),
    linear-gradient(-45deg, transparent 75%, var(--checker-b) 75%);
  background-size: 8px 8px;
  background-position: 0 0, 0 4px, 4px -4px, -4px 0px;
  box-shadow: 0 0 0 1px var(--b1);
  cursor: pointer;
  transition: box-shadow 0.13s;
}
.layer-thumb:hover { box-shadow: 0 0 0 1px var(--accent); }

.layer-thumb.mask-thumb { background: #000; background-image: none; position: relative; }
.layer-thumb.mask-thumb.mask-disabled { opacity: 0.45; }
.layer-thumb.mask-thumb.mask-disabled::after {
  content: '';
  position: absolute;
  left: 4px; right: 4px;
  top: 50%; height: 2px;
  border-radius: 999px;
  background: var(--danger);
  transform: rotate(-42deg);
  pointer-events: none;
}

.layer-thumb.selected-target {
  box-shadow: 0 0 0 2px var(--accent), 0 0 0 4px var(--accent-bg);
}

.layer-thumb img,
.thumb-img {
  max-width: 100%; max-height: 100%;
  object-fit: contain;
}

.layer-name {
  font-size: 12px;
  color: var(--t0);
  flex: 1;
  user-select: none;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}

.clip-icon { color: var(--accent) !important; }

/* ──────────────────────────────────────────────────────
   Layers Footer
   ────────────────────────────────────────────────────── */
.layers-footer {
  padding: 7px;
  border-top: 1px solid var(--b0);
  display: flex; gap: 3px;
  background: var(--s0);
  align-items: center;
}

.layer-action-btn {
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  background: transparent;
  border: 1px solid transparent;
  color: var(--t1);
  width: 30px; height: 30px;
  padding: 0;
  border-radius: 6px;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
}
.layer-action-btn:hover { background: var(--s3); color: var(--t0); border-color: var(--b1); }

.layer-icon-btn, .layer-link-btn {
  flex: 0 0 auto;
  display: inline-flex; align-items: center; justify-content: center;
  width: 26px; height: 26px;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 5px;
  color: var(--t1);
  background: transparent;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s, color 0.12s, opacity 0.12s;
}
.layer-icon-btn:hover, .layer-link-btn:hover { background: var(--s3); color: var(--t0); }
.layer-icon-btn.is-on, .layer-link-btn.is-linked { color: var(--accent); }
.layer-icon-btn.is-muted, .layer-link-btn.is-unlinked { opacity: 0.35; }
.layer-icon-btn.danger:hover {
  color: var(--danger);
  border-color: rgba(255,96,96,0.28);
  background: rgba(255,96,96,0.07);
}

.layer-link-btn {
  width: 20px; height: 32px;
  margin: 0 -1px;
  position: relative; z-index: 10;
  pointer-events: auto; user-select: none;
}

/* ──────────────────────────────────────────────────────
   Anchor Grids
   ────────────────────────────────────────────────────── */
.anchor-grid {
  display: grid;
  grid-template-columns: repeat(3, 26px);
  grid-template-rows: repeat(3, 26px);
  gap: 1.5px;
  background: var(--b0);
  border: 1.5px solid var(--b0);
  border-radius: 5px;
  overflow: hidden;
}

.anchor-cell {
  background: var(--s1); cursor: pointer;
  transition: background 0.13s;
  display: flex; justify-content: center; align-items: center;
}
.anchor-cell:hover { background: var(--s3); }
.anchor-cell::after {
  content: ''; display: block;
  width: 5px; height: 5px;
  border-radius: 50%; background: var(--t2);
}
.anchor-cell.active { background: var(--accent); }
.anchor-cell.active::after { background: #fff; }

.anchor-grid-small {
  display: grid;
  grid-template-columns: repeat(3, 6px);
  gap: 2px; align-items: center;
}
.anchor-cell-small {
  width: 6px; height: 6px;
  background: var(--s5);
  border: 1px solid var(--s2);
  cursor: pointer; border-radius: 1px;
  transition: background 0.1s;
}
.anchor-cell-small:hover { background: var(--accent); }
.anchor-cell-small.active { background: var(--t0); border-color: var(--t0); }

/* ──────────────────────────────────────────────────────
   Tool Group Dropdowns
   ────────────────────────────────────────────────────── */
.tool-group { position: relative; display: flex; }

.tool-group .tool-dropdown {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 0;
  background: var(--s2);
  border: 1px solid var(--b1);
  border-radius: 9px;
  padding: 4px;
  display: flex; flex-direction: column; gap: 3px;
  box-shadow: var(--sh-panel);
  opacity: 0; visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.17s, visibility 0.17s, transform 0.17s;
  z-index: 100;
}
.tool-group.open .tool-dropdown {
  opacity: 1; visibility: visible; transform: translateY(0);
}

/* ──────────────────────────────────────────────────────
   Modals
   ────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.62);
  display: flex; justify-content: center; align-items: center;
  z-index: 1000;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.modal {
  background: var(--s2);
  border: 1px solid var(--b1);
  border-radius: 12px;
  width: 340px;
  padding: 22px;
  box-shadow: var(--sh-lg), 0 0 0 1px var(--b0) inset;
}

.modal h3 {
  margin-bottom: 16px;
  font-size: 15px;
  font-weight: 600;
  color: var(--t0);
  letter-spacing: -0.01em;
}

.modal .input-group {
  display: flex; flex-direction: row;
  align-items: center;
  margin-bottom: 12px; gap: 8px;
}
.modal .input-group label { font-size: 12.5px; width: 90px; color: var(--t1); }
.modal .input-group input {
  flex: 1; background: var(--s3);
  border: 1px solid var(--b0);
  color: var(--t0); padding: 6px 8px;
  border-radius: 6px; font-size: 13px;
  font-family: inherit; outline: none;
}
.modal .input-group .unit { font-size: 11px; color: var(--t1); }

.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }

/* Curves-style (non-blocking) overlay */
.curves-overlay {
  background: transparent;
  pointer-events: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}
.curves-overlay .modal {
  pointer-events: auto;
  box-shadow: var(--sh-lg), 0 0 0 1px var(--b1);
}

/* ──────────────────────────────────────────────────────
   Color Picker Floating Panel
   ────────────────────────────────────────────────────── */
.color-picker-modal,
.floating-panel {
  width: auto;
  padding: 22px;
  border-radius: 12px;
  background: var(--s2);
  border: 1px solid var(--b1);
  position: fixed;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1001;
  box-shadow: var(--sh-lg), 0 0 0 1px var(--b0) inset;
}

.color-picker-modal h3 { margin-bottom: 18px; font-size: 14px; font-weight: 600; }
.color-picker-modal h3.cp-drag-handle { cursor: grab; user-select: none; }
.color-picker-modal h3.cp-drag-handle:active { cursor: grabbing; }

.color-picker-body { display: flex; flex-direction: column; }
.cp-main { display: flex; gap: 14px; }

.cp-sv-area {
  position: relative;
  width: 256px; height: 256px;
  border-radius: 8px; overflow: hidden;
  cursor: crosshair; border: 1px solid var(--b1);
}
.cp-sv-area canvas { width: 100%; height: 100%; }

.cp-cursor {
  position: absolute;
  width: 14px; height: 14px;
  border: 2.5px solid #fff; border-radius: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  box-shadow: 0 0 0 1px rgba(0,0,0,0.4), inset 0 0 0 1px rgba(0,0,0,0.4);
  z-index: 10;
}

.cp-hue-area {
  position: relative;
  width: 14px; height: 256px;
  border-radius: 8px;
  cursor: crosshair; border: 1px solid var(--b1);
  background: linear-gradient(to bottom, #f00 0%, #ff0 17%, #0f0 33%, #0ff 50%, #00f 67%, #f0f 83%, #f00 100%);
}
.cp-hue-cursor {
  width: calc(100% + 6px); height: 6px;
  border-radius: 2px; left: 50%;
  border: 2px solid #fff;
  box-shadow: 0 0 3px rgba(0,0,0,0.5);
  background: transparent;
}

.cp-side { display: flex; flex-direction: column; gap: 14px; width: 88px; }

.cp-preview {
  width: 70px; height: 70px;
  border-radius: 7px; border: 1px solid var(--b1);
}

.cp-hex-group { display: flex; flex-direction: column; gap: 5px; }

.cp-hex-group label {
  font-size: 10.5px; color: var(--t1);
  text-transform: uppercase; letter-spacing: 0.06em; font-weight: 600;
}

.cp-hex-group input {
  width: 100%;
  background: var(--s3) !important;
  border: 1px solid var(--b0) !important;
  color: var(--t0) !important;
  padding: 7px 8px; border-radius: 6px;
  font-size: 13px; font-family: monospace; outline: none;
}
.cp-hex-group input:focus { border-color: var(--accent) !important; }

.cp-eyedropper {
  align-self: flex-start;
  padding: 7px; width: 32px; height: 32px;
  background: var(--s3); border: 1px solid var(--b0);
  border-radius: 6px; color: var(--t0);
  transition: background 0.13s, border-color 0.13s;
}
.cp-eyedropper:hover { background: var(--s4); border-color: var(--b1); }

.color-picker-modal .modal-actions {
  margin-top: 20px; display: flex; justify-content: flex-end; gap: 10px;
}

/* ──────────────────────────────────────────────────────
   Color Mixer band sliders
   ────────────────────────────────────────────────────── */
.cm-slider {
  -webkit-appearance: none; appearance: none;
  height: 7px; border-radius: 4px;
  outline: none; cursor: pointer; width: 100%;
}
.cm-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 13px; height: 13px;
  background: #fff; border-radius: 50%;
  border: 1px solid rgba(0,0,0,0.2);
  box-shadow: 0 1px 4px rgba(0,0,0,0.55);
  cursor: pointer; transition: transform 0.1s;
}
.cm-slider::-webkit-slider-thumb:hover { transform: scale(1.18); }
.cm-slider::-moz-range-thumb {
  width: 13px; height: 13px;
  background: #fff; border-radius: 50%;
  border: 1px solid rgba(0,0,0,0.2); cursor: pointer;
}
.cm-num::-webkit-inner-spin-button,
.cm-num::-webkit-outer-spin-button { opacity: 1; }

/* ──────────────────────────────────────────────────────
   Move / Shape / etc settings panels (tool context bar)
   ────────────────────────────────────────────────────── */
.move-settings, .shape-settings, .brush-settings,
.text-settings, .transform-settings,
.pen-settings, .selection-settings,
.gradient-settings {
  background: transparent;
  padding: 0 !important;
  border: none;
  box-shadow: none;
  backdrop-filter: none;
}

/* ──────────────────────────────────────────────────────
   Spinner & Animations
   ────────────────────────────────────────────────────── */
.spinner {
  display: inline-block;
  width: 14px; height: 14px;
  border: 2px solid var(--b1);
  border-top: 2px solid var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* ──────────────────────────────────────────────────────
   Global Loading Overlay
   ────────────────────────────────────────────────────── */
.global-loading-overlay {
  position: fixed; inset: 0;
  background: rgba(11,11,15,0.90);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 9999999;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  color: var(--t0);
}

.loading-spinner {
  width: 42px; height: 42px;
  border: 3px solid var(--b1);
  border-top: 3px solid var(--accent);
  border-radius: 50%;
  animation: spin 0.85s linear infinite;
  margin-bottom: 16px;
}

.loading-text { font-size: 13.5px; font-weight: 500; letter-spacing: 0.03em; color: var(--t1); }

/* ──────────────────────────────────────────────────────
   Scrollbars
   ────────────────────────────────────────────────────── */
/* The LUT list is a column flex container, so its folder blocks would shrink to
   fit instead of overflowing — the panel could never scroll no matter how many
   LUTs were in it. Keep them at their natural height so the list scrolls. */
#lutsList > * { flex-shrink: 0; }

::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--s5); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--b2); }
::-webkit-scrollbar-corner { background: transparent; }
* { scrollbar-width: thin; scrollbar-color: var(--s5) transparent; }

/* ──────────────────────────────────────────────────────
   RAW Editor
   ────────────────────────────────────────────────────── */
.raw-section { border-bottom: 1px solid var(--b0); }

.raw-sec-hdr {
  padding: 9px 14px;
  color: var(--t0);
  font-size: 10.5px;
  font-weight: 700;
  cursor: pointer;
  display: flex; align-items: center; justify-content: space-between;
  user-select: none;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  transition: color 0.12s;
}
.raw-sec-hdr:hover { color: var(--accent-h); }
.raw-sec-hdr::after { content: '▾'; font-size: 8px; color: var(--t2); letter-spacing: 0; text-transform: none; }
.raw-collapsed::after { content: '▸'; }

.raw-sec-body { padding: 4px 14px 12px; }

.raw-row { display: flex; flex-direction: column; margin-bottom: 2px; }

.raw-lbl {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 4px;
  font-size: 11px; color: var(--t1);
}

.raw-num {
  color: var(--t2);
  font-size: 10.5px;
  min-width: 36px; text-align: right;
  font-variant-numeric: tabular-nums;
}

.raw-range {
  width: 100%; height: 3px;
  -webkit-appearance: none; appearance: none;
  background: var(--s5);
  border-radius: 2px; outline: none; cursor: pointer;
  margin-bottom: 12px;
}
.raw-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 11px; height: 11px;
  border-radius: 50%; background: var(--t0);
  cursor: pointer; border: none;
  box-shadow: 0 1px 3px rgba(0,0,0,0.45);
  transition: transform 0.1s;
}
.raw-range::-webkit-slider-thumb:hover { transform: scale(1.2); }
.raw-range::-moz-range-thumb {
  width: 11px; height: 11px;
  border-radius: 50%; background: var(--t0);
  cursor: pointer; border: none;
}

.raw-hsl-tab {
  flex: 1; padding: 7px 0;
  background: none; border: none;
  border-bottom: 2px solid transparent;
  color: var(--t1); font-size: 11px;
  font-family: inherit; cursor: pointer;
  transition: color 0.13s, border-color 0.13s;
}
.raw-hsl-tab:hover { color: var(--t0); }
.raw-hsl-tab-active { color: var(--t0); border-bottom-color: var(--accent); }

/* ──────────────────────────────────────────────────────
   Export Preview
   ────────────────────────────────────────────────────── */
#exportPreviewImg {
  display: none; position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  object-fit: contain; pointer-events: none; z-index: 9999;
}

/* Export quality — blue fill bar, round white thumb */
#exportQualitySlider {
  height: 8px;
  border-radius: 4px;
  background: #383838;
}
#exportQualitySlider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px; height: 16px;
  background: #fff;
  border: none;
  border-radius: 50%;
  box-shadow: 0 1px 4px rgba(0,0,0,0.5);
  margin-top: -4px;
  cursor: pointer;
}
#exportQualitySlider::-moz-range-thumb {
  width: 16px; height: 16px;
  background: #fff;
  border: none;
  border-radius: 50%;
  box-shadow: 0 1px 4px rgba(0,0,0,0.5);
  cursor: pointer;
}
#exportQualitySlider::-moz-range-track {
  height: 8px;
  border-radius: 4px;
  background: transparent;
}


/* ──────────────────────────────────────────────────────
   Shortcut reference ("i" in the right rail)
   ────────────────────────────────────────────────────── */
.help-overlay { z-index: 1200; }

.help-doc {
  background: var(--s2);
  border: 1px solid var(--b1);
  border-radius: 12px;
  box-shadow: var(--sh-lg), 0 0 0 1px var(--b0) inset;
  width: min(860px, 92vw);
  max-height: 86vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.help-doc-hdr {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px;
  padding: 16px 20px 12px;
  border-bottom: 1px solid var(--b0);
  flex-shrink: 0;
}
.help-doc-hdr h3 {
  margin: 0; font-size: 15px; font-weight: 600;
  color: var(--t0); letter-spacing: -0.01em;
}
.help-close {
  background: transparent; border: none; color: var(--t1);
  font-size: 22px; line-height: 1; cursor: pointer;
  width: 28px; height: 28px; border-radius: 6px;
}
.help-close:hover { color: var(--t0); background: var(--s3); }

.help-doc-note {
  padding: 10px 20px;
  font-size: 12px; line-height: 1.7; color: var(--t1);
  background: var(--s1);
  border-bottom: 1px solid var(--b0);
  flex-shrink: 0;
}

.help-doc-body {
  padding: 16px 20px 22px;
  overflow-y: auto;
  columns: 2;
  column-gap: 28px;
}
@media (max-width: 720px) { .help-doc-body { columns: 1; } }

.help-sec {
  break-inside: avoid;
  -webkit-column-break-inside: avoid;
  margin-bottom: 18px;
}
.help-sec h4 {
  margin: 0 0 8px;
  font-size: 11px; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--accent-h);
}
.help-sec dl {
  margin: 0;
  display: grid;
  grid-template-columns: minmax(64px, max-content) 1fr;
  gap: 6px 12px;
  align-items: baseline;
}
.help-sec dt { margin: 0; white-space: nowrap; }
.help-sec dd { margin: 0; font-size: 12.5px; color: var(--t1); line-height: 1.5; }

.help-doc kbd, .help-doc-note kbd {
  display: inline-block;
  min-width: 20px;
  padding: 2px 6px;
  font-family: inherit; font-size: 11px; font-weight: 600;
  text-align: center;
  color: var(--t0);
  background: var(--s3);
  border: 1px solid var(--b1);
  border-bottom-width: 2px;
  border-radius: 5px;
}
