/* ═══════════════════════════════════════════════════════════════
   UJIYARI — Annotation / Drawing Toolbar  v2.0
   Desktop + tablet only (hidden below 768 px via media query)
═══════════════════════════════════════════════════════════════ */

/* ── Hide everything on phones ─────────────────────────────────── */
@media (max-width: 767px) {
  #ujk-toggle-btn,
  #ujk-toolbar,
  #ujk-canvas,
  #ujk-cursor-dot,
  #ujk-text-input {
    display: none !important;
  }
}

/* ── Toggle button ──────────────────────────────────────────────── */
#ujk-toggle-btn {
  position: fixed;
  right: 24px;
  bottom: 84px;
  z-index: 10000;

  display: flex;
  align-items: center;
  justify-content: center;

  width: 48px;
  height: 48px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  cursor: pointer;

  background: linear-gradient(145deg, #1e3a5a, #0f2238);
  color: #e2e8f0;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255,255,255,0.1);

  transition: background 0.18s ease, color 0.18s ease, transform 0.15s ease,
              box-shadow 0.18s ease;
}

#ujk-toggle-btn svg {
  width: 22px;
  height: 22px;
  display: block;
  flex-shrink: 0;
}

#ujk-toggle-btn:hover {
  background: linear-gradient(145deg, #e8830a, #c96d05);
  color: #ffffff;
  transform: scale(1.08);
  box-shadow: 0 6px 24px rgba(232, 131, 10, 0.4), inset 0 1px 0 rgba(255,255,255,0.15);
}

#ujk-toggle-btn.active {
  background: linear-gradient(145deg, #e8830a, #c96d05);
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(232, 131, 10, 0.35), inset 0 1px 0 rgba(255,255,255,0.15);
}

#ujk-toggle-btn:focus-visible {
  outline: 2px solid #e8830a;
  outline-offset: 3px;
}

/* ── Toolbar card ───────────────────────────────────────────────── */
#ujk-toolbar {
  position: fixed;
  top: 80px;
  right: 16px;
  z-index: 10000;

  width: 220px;
  padding: 14px 14px 12px;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.1);

  background: linear-gradient(160deg, #162b42 0%, #0d1e31 100%);
  color: #e2e8f0;
  box-shadow:
    0 12px 40px rgba(0, 0, 0, 0.55),
    0 2px 10px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);

  font-family: 'Inter', system-ui, sans-serif;
  font-size: 12px;
  user-select: none;

  max-height: calc(100vh - 100px);
  overflow-y: auto;
}

/* ── Toolbar sections ───────────────────────────────────────────── */
.ujk-toolbar__section {
  padding-bottom: 12px;
  margin-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.ujk-toolbar__section--last {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: none;
}

.ujk-toolbar__section--shortcuts {
  padding-bottom: 8px;
  margin-bottom: 8px;
}

.ujk-toolbar__label {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(148, 163, 184, 0.75);
  margin-bottom: 8px;
}

.ujk-toolbar__row {
  display: flex;
  align-items: center;
  gap: 6px;
}

.ujk-toolbar__row--wrap {
  flex-wrap: wrap;
  gap: 8px;
}

/* ── Tool buttons ───────────────────────────────────────────────── */
.ujk-tool-btn {
  display: flex;
  align-items: center;
  justify-content: center;

  width: 34px;
  height: 34px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 10px;
  cursor: pointer;

  background: rgba(255, 255, 255, 0.1);
  color: #e2e8f0;

  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease,
              opacity 0.15s ease, transform 0.1s ease;
}

/* ── Explicit SVG sizing — prevents reset.css height:auto overriding
      the SVG presentation attributes and collapsing stroke icons ── */
.ujk-tool-btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  display: block;
}

.ujk-tool-btn:hover:not(:disabled) {
  background: rgba(232, 131, 10, 0.25);
  border-color: rgba(232, 131, 10, 0.65);
  color: #f8b967;
  transform: scale(1.05);
}

.ujk-tool-btn.active {
  background: #e8830a;
  border-color: #f5a23b;
  color: #ffffff;
  box-shadow: 0 0 0 2px rgba(232, 131, 10, 0.35), 0 2px 8px rgba(232, 131, 10, 0.4);
}

.ujk-tool-btn.active:hover {
  transform: none;
}

.ujk-tool-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.ujk-tool-btn:focus-visible {
  outline: 2px solid #e8830a;
  outline-offset: 2px;
}

/* ── Color swatches ─────────────────────────────────────────────── */
.ujk-color-swatch {
  width: 22px;
  height: 22px;
  padding: 0;
  border: 2px solid rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  cursor: pointer;

  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.35);
  transition: transform 0.14s ease, border-color 0.14s ease, box-shadow 0.14s ease;
}

.ujk-color-swatch:hover {
  transform: scale(1.2);
  border-color: rgba(255, 255, 255, 0.5);
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.45);
}

.ujk-color-swatch.selected {
  border-color: #ffffff;
  transform: scale(1.25);
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.25), 0 3px 10px rgba(0, 0, 0, 0.4);
}

.ujk-color-swatch:focus-visible {
  outline: 2px solid #e8830a;
  outline-offset: 2px;
}

/* ── Spinbox row (Width / Opacity) ──────────────────────────────── */
.ujk-toolbar__row--spinbox {
  display: flex;
  align-items: center;
  gap: 4px;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  padding: 3px;
}

.ujk-spin-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;

  width: 28px;
  height: 28px;
  padding: 0;
  border: none;
  border-radius: 7px;
  cursor: pointer;

  background: rgba(255, 255, 255, 0.1);
  color: #e2e8f0;
  font-family: inherit;
  font-size: 16px;
  font-weight: 400;
  line-height: 1;

  transition: background 0.15s ease, color 0.15s ease;
}

.ujk-spin-btn:hover {
  background: rgba(232, 131, 10, 0.35);
  color: #ffffff;
}

.ujk-spin-btn:active {
  transform: scale(0.9);
}

.ujk-spin-btn:focus-visible {
  outline: 2px solid #e8830a;
  outline-offset: 2px;
}

.ujk-spin-val {
  flex: 1;
  text-align: center;
  font-size: 12px;
  font-weight: 700;
  color: #f1f5f9;
  min-width: 48px;
  padding: 0 4px;
  letter-spacing: 0.03em;
}

/* ── Clear button ───────────────────────────────────────────────── */
.ujk-clear-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;

  width: 100%;
  height: 34px;
  padding: 0 12px;
  border: 1px solid rgba(239, 68, 68, 0.4);
  border-radius: 9px;
  cursor: pointer;

  background: rgba(239, 68, 68, 0.12);
  color: #fca5a5;
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;

  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.ujk-clear-btn svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  display: block;
}

.ujk-clear-btn:hover {
  background: rgba(239, 68, 68, 0.25);
  border-color: rgba(239, 68, 68, 0.6);
  color: #ffffff;
}

.ujk-clear-btn:focus-visible {
  outline: 2px solid #ef4444;
  outline-offset: 2px;
}

/* ── Keyboard shortcuts hint ────────────────────────────────────── */
.ujk-shortcuts {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(54px, 1fr));
  gap: 5px 6px;
}

.ujk-sc-item {
  display: flex;
  align-items: center;
  gap: 3px;
  font-size: 9px;
  color: #64748b;
  white-space: nowrap;
}

.ujk-key {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  padding: 2px 5px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.07);
  color: #cbd5e1;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.03em;
  line-height: 1.4;
}

/* ── Text input overlay ─────────────────────────────────────────── */
#ujk-text-input {
  position: fixed;
  z-index: 10001;
  padding: 2px 6px;
  min-width: 120px;
  max-width: 400px;

  background: rgba(0, 0, 0, 0.55);
  border: 1px dashed rgba(255, 255, 255, 0.4);
  border-radius: 4px;
  outline: none;

  font-family: 'Inter', system-ui, sans-serif;
  font-weight: 700;
  caret-color: white;
}

#ujk-text-input::placeholder {
  color: rgba(255, 255, 255, 0.35);
  font-size: 0.75em;
  font-weight: 400;
}

/* ── Cursor dot preview ─────────────────────────────────────────── */
#ujk-cursor-dot {
  pointer-events: none;
  z-index: 10001;
  transition: width 0.1s ease, height 0.1s ease;
}

/* ── Back-to-top button ─────────────────────────────────────────── */
#back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 10000;

  display: none;          /* shown via JS after 400px scroll */
  align-items: center;
  justify-content: center;

  width: 44px;
  height: 44px;
  padding: 0;
  border: none;
  border-radius: 50%;
  cursor: pointer;

  background: var(--color-brand, #1a3a5c);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);

  transition: background 0.18s ease, transform 0.15s ease;
}

#back-to-top svg {
  display: block;
  flex-shrink: 0;
}

#back-to-top:hover {
  background: var(--color-accent, #e8830a);
  transform: translateY(-2px) scale(1.08);
}

#back-to-top:focus-visible {
  outline: 2px solid var(--color-accent, #e8830a);
  outline-offset: 3px;
}

/* ── Draw-active cursor — managed by JS via document.body.style.cursor ── */
/* No CSS cursor:none rule here — JS sets it directly to avoid !important battles */

/* ── Light theme ────────────────────────────────────────────────── */
#ujk-toolbar.ujk-light {
  background: linear-gradient(160deg, #f8fafc 0%, #f0f4f8 100%);
  color: #1e293b;
  border-color: rgba(0, 0, 0, 0.1);
  box-shadow:
    0 12px 40px rgba(0, 0, 0, 0.12),
    0 2px 10px rgba(0, 0, 0, 0.07),
    inset 0 1px 0 rgba(255, 255, 255, 0.95);
}

#ujk-toolbar.ujk-light .ujk-toolbar__section {
  border-bottom-color: rgba(0, 0, 0, 0.07);
}

#ujk-toolbar.ujk-light .ujk-toolbar__label {
  color: #64748b;
}

#ujk-toolbar.ujk-light .ujk-tool-btn {
  background: rgba(0, 0, 0, 0.06);
  border-color: rgba(0, 0, 0, 0.14);
  color: #334155;
}

#ujk-toolbar.ujk-light .ujk-tool-btn:hover:not(:disabled) {
  background: rgba(232, 131, 10, 0.12);
  border-color: rgba(232, 131, 10, 0.45);
  color: #b85e04;
}

#ujk-toolbar.ujk-light .ujk-tool-btn.active {
  background: #e8830a;
  border-color: #f5a23b;
  color: #ffffff;
}

#ujk-toolbar.ujk-light .ujk-toolbar__row--spinbox {
  background: rgba(0, 0, 0, 0.04);
  border-color: rgba(0, 0, 0, 0.1);
}

#ujk-toolbar.ujk-light .ujk-spin-btn {
  background: rgba(0, 0, 0, 0.07);
  color: #334155;
}

#ujk-toolbar.ujk-light .ujk-spin-btn:hover {
  background: rgba(232, 131, 10, 0.18);
  color: #b85e04;
}

#ujk-toolbar.ujk-light .ujk-spin-val {
  color: #1e293b;
}

#ujk-toolbar.ujk-light .ujk-shortcuts .ujk-sc-item {
  color: #94a3b8;
}

#ujk-toolbar.ujk-light .ujk-key {
  border-color: rgba(0, 0, 0, 0.14);
  background: rgba(0, 0, 0, 0.05);
  color: #475569;
}

/* ── Theme toggle button (sits in History row alongside undo/redo) ── */
/* Inherits all .ujk-tool-btn styles; no additional CSS needed */