/* ===== GrobPaint — Nintendo-inspired whimsical theme ===== */
:root {
  /* Warm dark base — slightly blue-tinted like a DS top screen */
  --bg-main: #1c1f2b;
  --bg-panel: #252836;
  --bg-panel-hi: #2d3142;
  --bg-input: #353849;
  --bg-hover: #3d4260;
  --bg-active: #3a5f8a;
  --border: #3e4358;
  --border-light: #4e536e;
  --text: #dee2f0;
  --text-dim: #8a90a8;
  --accent: #7dcde8;
  --accent-glow: rgba(125, 205, 232, 0.25);
  --accent-dark: #5096b0;
  --warm-white: #f0f0f5;
  --danger: #e85a6e;
  --scrollbar: #4e536e;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-pill: 100px;
  /* Shared timing */
  --ease-out: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-spring: cubic-bezier(0.34, 1.4, 0.64, 1);
  --dur: 0.1s;
  --dur-fast: 0.06s;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* Animations — only used where personality matters */
@keyframes pop-in {
  0% { transform: scale(0.95); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}
@keyframes overlay-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

html, body {
  height: 100%;
  overflow: hidden;
  font-family: 'Nunito', 'Varela Round', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  background: var(--bg-main);
  user-select: none;
  -webkit-user-select: none;
}

body {
  display: grid;
  grid-template-rows: auto auto auto 1fr auto;
  height: 100vh;
}

/* Scrollbars */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-panel); border-radius: 4px; }
::-webkit-scrollbar-thumb { background: var(--scrollbar); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent-dark); }

/* ===== Menu Bar ===== */
#menubar {
  display: flex;
  background: linear-gradient(to bottom, var(--bg-panel-hi), var(--bg-panel));
  border-bottom: 1px solid var(--border);
  padding: 0 6px;
  -webkit-app-region: drag;
}
.menu-item {
  padding: 5px 12px;
  cursor: pointer;
  -webkit-app-region: no-drag;
  border-radius: var(--radius-sm);
  margin: 2px 1px;
  transition: background var(--dur);
  font-size: 12.5px;
  letter-spacing: 0.2px;
}
.menu-item:hover, .menu-item.open {
  background: var(--bg-hover);
}
.menu-item:active {
  background: var(--bg-active);
}

.menu-dropdown {
  position: fixed;
  background: var(--bg-panel-hi);
  border: 1px solid var(--border-light);
  min-width: 220px;
  z-index: 1000;
  box-shadow: 0 8px 24px rgba(0,0,0,0.45), 0 0 0 1px rgba(125,205,232,0.08);
  border-radius: var(--radius-md);
  padding: 4px;
  overflow: hidden;
  animation: pop-in 0.1s var(--ease-out);
}
.menu-dropdown.hidden { display: none; }
.menu-dropdown-item {
  padding: 7px 20px 7px 14px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  border-radius: var(--radius-sm);
  transition: background var(--dur-fast);
}
.menu-dropdown-item:hover { background: var(--accent); color: #111; }
.menu-dropdown-item:hover .shortcut { color: #333; }
.menu-dropdown-item:active { background: var(--accent-dark); }
.menu-dropdown-item .shortcut { color: var(--text-dim); margin-left: 24px; font-size: 11px; }
.menu-dropdown-sep { border-top: 1px solid var(--border); margin: 3px 8px; }

/* ===== Document Tabs ===== */
#doc-tabs {
  display: flex;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  min-height: 34px;
  padding: 3px 4px 0;
  gap: 3px;
}
.doc-tab {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  cursor: pointer;
  white-space: nowrap;
  min-width: 0;
  max-width: 200px;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  transition: background var(--dur);
  font-size: 12px;
}
.doc-tab:hover { background: var(--bg-hover); }
.doc-tab.active {
  background: var(--bg-active);
  box-shadow: inset 0 2px 0 var(--accent);
}
.doc-tab canvas { width: 24px; height: 18px; border: 1px solid var(--border); border-radius: 3px; flex-shrink: 0; }
.doc-tab .tab-name { overflow: hidden; text-overflow: ellipsis; }
.doc-tab .tab-dirty { color: var(--accent); }
.doc-tab .tab-close {
  font-size: 14px; opacity: 0.4; cursor: pointer; flex-shrink: 0;
  width: 18px; height: 18px; display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-pill);
  transition: all var(--dur);
}
.doc-tab .tab-close:hover { opacity: 1; background: var(--danger); color: white; }
.doc-tab .tab-close:active { opacity: 1; background: #c04858; }
.doc-tab.dragging { opacity: 0.4; }
.doc-tab.drag-over { box-shadow: inset 2px 0 0 var(--accent); }

/* ===== Tool Options Bar ===== */
#tool-options {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 4px 12px;
  background: linear-gradient(to bottom, var(--bg-panel-hi), var(--bg-panel));
  border-bottom: 1px solid var(--border);
  min-height: 32px;
  flex-wrap: wrap;
}
#tool-options label { color: var(--text-dim); font-size: 11.5px; }
#tool-options input[type="number"] {
  width: 52px; background: var(--bg-input); border: 1px solid var(--border);
  color: var(--text); padding: 3px 5px; border-radius: var(--radius-sm);
  font-family: inherit;
}
#tool-options input[type="range"] { width: 80px; accent-color: var(--accent); }
#tool-options select {
  background: var(--bg-input); border: 1px solid var(--border);
  color: var(--text); padding: 3px 5px; border-radius: var(--radius-sm);
  font-family: inherit;
}
#tool-options input[type="checkbox"] { accent-color: var(--accent); }
.tool-option-btn {
  background: var(--bg-input); border: 1px solid var(--border);
  color: var(--text); padding: 4px 12px; border-radius: var(--radius-pill); cursor: pointer;
  transition: background var(--dur), color var(--dur), border-color var(--dur);
  font-family: inherit; font-weight: 600; font-size: 12px;
}
.tool-option-btn:hover { background: var(--accent); color: #111; border-color: var(--accent); }
.tool-option-btn:active { background: var(--accent-dark); }
.tool-option-group {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ===== Main Layout ===== */
#main {
  display: grid;
  grid-template-columns: 62px 1fr 224px;
  overflow: hidden;
}

/* ===== Toolbox ===== */
#toolbox {
  background: linear-gradient(to right, var(--bg-panel-hi), var(--bg-panel));
  border-right: 1px solid var(--border);
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-content: start;
  gap: 3px;
  padding: 6px 4px;
}
.tool-btn {
  width: 28px; height: 28px;
  background: none; border: 2px solid transparent;
  color: var(--text-dim); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-md); padding: 3px;
  transition: background var(--dur), border-color var(--dur), color var(--dur), box-shadow var(--dur);
}
.tool-btn svg { width: 20px; height: 20px; fill: currentColor; }
.tool-btn:hover {
  background: var(--bg-hover);
  border-color: var(--border-light);
  color: var(--text);
}
.tool-btn:active {
  background: var(--bg-active);
  transform: scale(0.9);
  transition: transform var(--dur-fast);
}
.tool-btn.active {
  background: var(--bg-active);
  border-color: var(--accent);
  color: var(--warm-white);
  box-shadow: 0 0 8px var(--accent-glow);
}

/* ===== Viewport ===== */
#viewport {
  position: relative;
  overflow: hidden;
  background: #181b24;
  cursor: crosshair;
}
#viewport canvas {
  position: absolute;
  top: 0; left: 0;
}
#canvas-overlay { pointer-events: none; }

#text-input-container {
  position: absolute;
  z-index: 10;
}
#text-input-container.hidden { display: none; }
#text-input {
  background: transparent;
  color: black;
  border: 1px dashed var(--accent);
  outline: none;
  resize: both;
  min-width: 50px;
  min-height: 24px;
  font-family: Arial, sans-serif;
  font-size: 16px;
  overflow: hidden;
  padding: 0;
}

/* ===== Right Panel ===== */
#right-panel {
  background: linear-gradient(to left, var(--bg-panel-hi), var(--bg-panel));
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Color Section */
#color-section {
  padding: 10px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  overflow-y: auto;
  max-height: 50%;
}

#color-swatches {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  position: relative;
  height: 42px;
}
#swatch-primary, #swatch-secondary {
  width: 34px; height: 34px;
  border: 2.5px solid var(--warm-white);
  border-radius: var(--radius-sm);
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(0,0,0,0.3);
  transition: transform var(--dur) var(--ease-spring), box-shadow var(--dur);
}
#swatch-primary:hover, #swatch-secondary:hover { transform: scale(1.08); box-shadow: 0 3px 10px rgba(0,0,0,0.4); }
#swatch-primary:active, #swatch-secondary:active { transform: scale(0.92); }
#swatch-secondary { position: absolute; left: 16px; top: 8px; z-index: 0; border-color: var(--text-dim); }
#swatch-primary { position: absolute; left: 0; top: 0; z-index: 1; }
#swap-colors {
  background: none; border: none; color: var(--text-dim); cursor: pointer;
  font-size: 15px; margin-left: 58px;
  transition: color var(--dur), transform 0.2s var(--ease-spring);
}
#swap-colors:hover { color: var(--accent); transform: rotate(180deg); }
#swap-colors:active { transform: rotate(180deg) scale(0.85); }

#alpha-row {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 10px;
}
#alpha-row label { color: var(--text-dim); font-size: 11.5px; }
#alpha-slider { flex: 1; accent-color: var(--accent); }
#alpha-value { width: 28px; text-align: right; font-size: 11px; }

/* Palette */
#palette-header {
  display: flex;
  margin-bottom: 6px;
}
#palette-select {
  flex: 1;
  background: var(--bg-input);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 3px 6px;
  font-size: 11px;
  font-family: inherit;
  cursor: pointer;
}
#palette {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 2px;
  margin-bottom: 10px;
}
.palette-color {
  width: 100%; aspect-ratio: 1;
  border: 1.5px solid rgba(255,255,255,0.08);
  border-radius: 4px;
  cursor: pointer;
  transition: transform var(--dur) var(--ease-spring), border-color var(--dur), box-shadow var(--dur);
}
.palette-color:hover {
  border-color: var(--warm-white);
  transform: scale(1.15);
  z-index: 1;
  box-shadow: 0 0 6px rgba(125,205,232,0.3);
}
.palette-color:active {
  transform: scale(0.88);
  transition: transform var(--dur-fast);
}

/* HSV Picker Toggle */
.panel-toggle {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 5px 8px;
  cursor: pointer;
  border-radius: var(--radius-pill);
  text-align: center;
  font-size: 11.5px;
  font-family: inherit;
  font-weight: 600;
  transition: background var(--dur), border-color var(--dur), color var(--dur);
  letter-spacing: 0.3px;
}
.panel-toggle:hover { background: var(--bg-hover); border-color: var(--accent); color: var(--accent); }
.panel-toggle:active { background: var(--bg-active); }

/* HSV Picker */
#hsv-picker {
  margin-top: 8px;
}
#hsv-picker.hidden { display: none; }

#sv-square {
  width: 100%;
  aspect-ratio: 1;
  position: relative;
  cursor: crosshair;
  border: 1.5px solid var(--border-light);
  margin-bottom: 8px;
  border-radius: var(--radius-sm);
}
#sv-cursor {
  width: 12px; height: 12px;
  border: 2.5px solid white;
  border-radius: 50%;
  position: absolute;
  pointer-events: none;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 3px rgba(0,0,0,0.8), 0 0 0 1px rgba(0,0,0,0.3);
}

#hue-bar {
  width: 100%;
  height: 18px;
  position: relative;
  cursor: crosshair;
  border: 1.5px solid var(--border-light);
  border-radius: var(--radius-pill);
  margin-bottom: 8px;
  background: linear-gradient(to right,
    hsl(0,100%,50%), hsl(60,100%,50%), hsl(120,100%,50%),
    hsl(180,100%,50%), hsl(240,100%,50%), hsl(300,100%,50%), hsl(360,100%,50%));
}
#hue-cursor {
  width: 6px; height: 100%;
  background: white;
  border: 1.5px solid #333;
  border-radius: 3px;
  position: absolute;
  top: 0;
  pointer-events: none;
  transform: translateX(-50%);
  box-shadow: 0 0 3px rgba(0,0,0,0.5);
}

#color-inputs { display: flex; flex-direction: column; gap: 4px; }
.color-input-row {
  display: flex; align-items: center; gap: 4px;
}
.color-input-row label { width: 22px; text-align: right; color: var(--text-dim); font-size: 11px; }
.color-input-row input[type="number"] {
  width: 42px; background: var(--bg-input); border: 1px solid var(--border);
  color: var(--text); padding: 2px 3px; border-radius: var(--radius-sm); font-size: 11px;
  font-family: inherit;
}
.color-input-row input[type="text"] {
  width: 70px; background: var(--bg-input); border: 1px solid var(--border);
  color: var(--text); padding: 2px 3px; border-radius: var(--radius-sm); font-size: 11px;
  font-family: inherit;
}

/* ===== Layers Section ===== */
#layers-section {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 80px;
  overflow: hidden;
}
#layers-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  font-weight: 700;
  font-size: 12.5px;
  letter-spacing: 0.3px;
}
#layer-blend-controls select {
  background: var(--bg-input); border: 1px solid var(--border);
  color: var(--text); font-size: 11px; padding: 2px 4px; border-radius: var(--radius-sm);
  font-family: inherit;
}
#layer-opacity-row {
  display: flex; align-items: center; gap: 4px;
  padding: 5px 10px;
  border-bottom: 1px solid var(--border);
}
#layer-opacity-row label { color: var(--text-dim); font-size: 11px; }
#layer-opacity { flex: 1; accent-color: var(--accent); }
#layer-opacity-value { width: 36px; text-align: right; font-size: 11px; }

#layer-list {
  flex: 1;
  overflow-y: auto;
}
.layer-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 8px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background var(--dur);
}
.layer-item:hover { background: var(--bg-hover); }
.layer-item.active {
  background: var(--bg-active);
  box-shadow: inset 3px 0 0 var(--accent);
}
.layer-item .layer-visibility {
  cursor: pointer; font-size: 14px; width: 20px; text-align: center; flex-shrink: 0;
  transition: opacity var(--dur);
}
.layer-item .layer-visibility:hover { opacity: 0.7; }
.layer-item .layer-thumb {
  width: 32px; height: 24px; border: 1px solid var(--border);
  border-radius: 4px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='8'%3E%3Crect width='4' height='4' fill='%23999'/%3E%3Crect x='4' y='4' width='4' height='4' fill='%23999'/%3E%3Crect x='4' width='4' height='4' fill='%23666'/%3E%3Crect y='4' width='4' height='4' fill='%23666'/%3E%3C/svg%3E");
  background-size: 8px 8px;
  flex-shrink: 0;
}
.layer-item .layer-thumb canvas { width: 100%; height: 100%; display: block; border-radius: 3px; }
.layer-item .layer-name {
  flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  font-size: 12px;
}
.layer-item .layer-name[contenteditable] {
  background: var(--bg-input); padding: 2px 5px; border-radius: var(--radius-sm);
  outline: 1.5px solid var(--accent);
}

#layer-buttons {
  display: flex;
  padding: 5px 6px;
  gap: 3px;
  border-top: 1px solid var(--border);
}
#layer-buttons button {
  flex: 1;
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  color: var(--text);
  padding: 5px;
  cursor: pointer;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-family: inherit;
  font-weight: 600;
  transition: background var(--dur), color var(--dur), border-color var(--dur), box-shadow var(--dur);
}
#layer-buttons button:hover {
  background: var(--accent);
  color: #111;
  border-color: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}
#layer-buttons button:active {
  background: var(--accent-dark);
  transform: scale(0.94);
  transition: transform var(--dur-fast);
}

/* ===== History Panel ===== */
#history-section {
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  height: 150px;
  min-height: 150px;
  flex-shrink: 0;
}
#history-header {
  padding: 6px 10px;
  font-weight: 700;
  font-size: 12.5px;
  letter-spacing: 0.3px;
  border-bottom: 1px solid var(--border);
}
#history-list {
  overflow-y: auto;
  font-size: 11px;
}
.history-item {
  padding: 3px 10px;
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.history-item:hover { background: var(--bg-hover); }
.history-item.active { background: var(--bg-active); color: var(--warm-white); }
.history-item.future { opacity: 0.35; }

/* ===== Status Bar ===== */
#statusbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 4px 14px;
  background: linear-gradient(to bottom, var(--bg-panel), var(--bg-panel-hi));
  border-top: 1px solid var(--border);
  font-size: 11px;
  color: var(--text-dim);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
#status-help { color: var(--text-dim); font-weight: 400; font-style: italic; }
.status-spacer { flex: 1; }
.status-grid {
  display: flex;
  align-items: center;
  gap: 4px;
}
.status-grid label {
  display: flex;
  align-items: center;
  gap: 3px;
  cursor: pointer;
}
.status-grid input[type="checkbox"] { accent-color: var(--accent); }
.status-grid input[type="number"] {
  width: 40px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 1px 3px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-family: inherit;
}
#status-zoom {
  display: flex;
  align-items: center;
  gap: 3px;
}
#zoom-input {
  width: 42px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 1px 3px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-family: inherit;
  text-align: right;
  -moz-appearance: textfield;
}
#zoom-input::-webkit-inner-spin-button,
#zoom-input::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
#zoom-slider {
  width: 60px;
  height: 12px;
  accent-color: var(--accent);
  margin-left: 4px;
}

/* ===== Dialog ===== */
#dialog-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10,12,20,0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
}
#dialog-overlay.hidden, #canvas-size-overlay.hidden, #scale-image-overlay.hidden,
#bc-overlay.hidden, #hsl-overlay.hidden, #blur-overlay.hidden, #sharpen-overlay.hidden { display: none; }
#bc-overlay, #hsl-overlay, #blur-overlay, #sharpen-overlay {
  position: fixed; inset: 0; background: rgba(10,12,20,0.6);
  backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center; z-index: 2000;
}
.adj-val { min-width: 36px; text-align: right; font-variant-numeric: tabular-nums; }
.adj-reset {
  background: none; border: 1px solid var(--border); color: var(--text-dim);
  width: 22px; height: 22px; border-radius: var(--radius-sm); cursor: pointer;
  font-size: 14px; display: flex; align-items: center; justify-content: center;
  padding: 0; flex-shrink: 0;
}
.adj-reset:hover { background: var(--bg-hover); color: var(--text); }
#scale-image-overlay {
  position: fixed; inset: 0; background: rgba(10,12,20,0.6);
  backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center; z-index: 2000;
}
.si-checkbox-label { display: flex; align-items: center; gap: 4px; width: auto !important; cursor: pointer; }
.si-checkbox-label input { accent-color: var(--accent); }
#canvas-size-overlay {
  position: fixed; inset: 0; background: rgba(10,12,20,0.6);
  backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center; z-index: 2000;
}
#cs-anchor-grid {
  display: grid;
  grid-template-columns: repeat(3, 24px);
  gap: 3px;
}
#cs-anchor-grid button {
  width: 24px; height: 24px;
  background: var(--bg-input); border: 1.5px solid var(--border);
  border-radius: var(--radius-sm); cursor: pointer;
  transition: background var(--dur), border-color var(--dur);
}
#cs-anchor-grid button:hover { background: var(--bg-hover); border-color: var(--accent); }
#cs-anchor-grid button:active { background: var(--bg-active); }
#cs-anchor-grid button.active { background: var(--accent); border-color: var(--accent); }
.dialog {
  background: var(--bg-panel-hi);
  border: 1.5px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 20px;
  min-width: 340px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.5), 0 0 0 1px rgba(125,205,232,0.06);
  animation: pop-in 0.15s var(--ease-out);
}
.dialog h3 {
  margin-bottom: 14px;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.3px;
  color: var(--warm-white);
}
.dialog-body { display: flex; flex-direction: column; gap: 10px; }
.dialog-row {
  display: flex; align-items: center; gap: 8px;
}
.dialog-row label { width: 70px; color: var(--text-dim); font-size: 12px; }
.dialog-row input, .dialog-row select {
  background: var(--bg-input); border: 1px solid var(--border);
  color: var(--text); padding: 5px 8px; border-radius: var(--radius-sm);
  font-family: inherit;
}
.dialog-row input[type="number"] { width: 80px; }
.dialog-buttons {
  display: flex; gap: 8px; justify-content: flex-end; margin-top: 18px;
}
.dialog-buttons button {
  padding: 7px 20px; border-radius: var(--radius-pill); cursor: pointer;
  border: 1.5px solid var(--border); color: var(--text);
  font-family: inherit; font-weight: 700; font-size: 12.5px;
  transition: background var(--dur), border-color var(--dur), color var(--dur), box-shadow var(--dur);
  letter-spacing: 0.3px;
}
.dialog-buttons button:first-child {
  background: var(--accent); border-color: var(--accent); color: #111;
  box-shadow: 0 2px 8px var(--accent-glow);
}
.dialog-buttons button:first-child:hover {
  background: #9adbef; box-shadow: 0 4px 16px var(--accent-glow);
}
.dialog-buttons button:first-child:active {
  background: var(--accent-dark);
}
.dialog-buttons button:last-child { background: var(--bg-input); }
.dialog-buttons button:last-child:hover { background: var(--bg-hover); border-color: var(--accent); }
.dialog-buttons button:last-child:active { background: var(--bg-active); }

/* ===== Focus rings ===== */
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent) !important;
  box-shadow: 0 0 0 2px var(--accent-glow);
}

/* ===== Overlay fade-in ===== */
#dialog-overlay, #canvas-size-overlay, #scale-image-overlay,
#bc-overlay, #hsl-overlay, #blur-overlay, #sharpen-overlay {
  animation: overlay-fade 0.15s ease-out;
}