/* ===== COLOR PALETTE GENERATOR - PROFESSIONAL EDITION ===== */
/* CMS Compatible • Dreamweaver Safe • UTF-8 Only • No .btn class conflicts */
/* ✅ STABLE: Zero transform/filter on hover to prevent visual jerk */

:root {
  --primary: #1EB6DE;
  --primary-dark: #1892B2;
  --light-bg: #F8FCFF;
  --border: #e1e5f1;
  --text: #1e293b;
  --text-light: #475569;
  --card-bg: #ffffff;
  --toast-bg: #2c3e50;
  --switch-bg: #cbd5e1;
  --switch-active: #1ba4c8;
  --danger: #e53e3e;
  --success: #2c7a4d;
  --warning: #ed8936;
  --info: #4299e1;
  
  /* Slider Geometry */
  --track-height: 12px;
  --track-radius: 4px;
  --thumb-size: 22px;
}

[data-theme="dark"] {
  --primary: #1EB6DE;
  --primary-dark: #1892B2;
  --light-bg: #292b32;
  --border: #4a4a5a;
  --text: #f1f5f9;
  --text-light: #cbd5e1;
  --card-bg: #1e1f28;
  --toast-bg: #111827;
  --switch-bg: #4b5563;
  --switch-active: #1ba4c8;
  --danger: #f56565;
  --success: #48bb78;
  --warning: #f6ad55;
  --info: #63b3ed;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
input[type="number"] { -moz-appearance: textfield; }
input[type="file"] { display: none; }
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* ===== BASE BUTTON STYLES - STABLE HOVER ===== */
button {
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  border-radius: 3px;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--light-bg);
  color: var(--text);
  border: 1px solid var(--border);
  min-height: 34px;
  white-space: nowrap;
  text-shadow: none;
  flex-shrink: 0;
  max-width: 100%;
  /* ✅ Prevent subpixel rendering issues */
  will-change: auto;
  backface-visibility: hidden;
}
button:hover {
  /* ✅ NO transform, NO filter - stable hover */
  border-color: var(--primary) !important;
  background: rgba(30, 182, 222, 0.08);
  color: var(--text);
}
button:active { 
  /* ✅ Minimal, stable active state */
  background: rgba(30, 182, 222, 0.12);
}
button:disabled { opacity: 0.5; cursor: not-allowed; }
button.primary { background: var(--primary); border-color: var(--primary); color: white; }
button.primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); }
button.secondary { background: var(--light-bg); border: 1px solid var(--border); }
button.secondary:hover { border-color: var(--primary); background: rgba(30, 182, 222, 0.08); }
button.success-btn { background: rgba(44, 122, 77, 0.12); border-color: var(--success); color: var(--success); }
button.success-btn:hover { background: rgba(44, 122, 77, 0.2); border-color: var(--success); }
.btn-group { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; justify-content: flex-end; }

/* ===== MAIN LAYOUT ===== */
.container-custom {
  margin: 0 auto;
  background: var(--card-bg);
  border-radius: 5px;
  box-shadow: 0 20px 35px -12px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: background 0.2s;
  width: 100%;
}
.tool-header { padding: 20px 24px 0 24px; border-bottom: 1px solid var(--border); }
.tool-header-content { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.tool-title { margin: 0; color: var(--primary); font-size: 1.4rem; display: flex; align-items: center; gap: 10px; }
.tool-subtitle { margin: 4px 0 0 0; color: var(--text-light); font-size: 0.9rem; }

.hex-tool-grid { display: grid; grid-template-columns: 1fr; gap: 16px; padding: 20px 24px; width: 100%; }
@media (min-width: 1100px) { .hex-tool-grid { grid-template-columns: 1fr 1fr; align-items: start; } }
.hex-input-column, .hex-preview-column { display: flex; flex-direction: column; gap: 2px; min-width: 0; width: 100%; }

/* ===== HEX INPUT ===== */
.input-group { display: flex; flex-direction: column; gap: 0; width: 100%; }
.label-row { display: flex; justify-content: space-between; align-items: center; font-size: 0.95rem; font-weight: 500; color: var(--text-light); margin-bottom: 4px; flex-wrap: wrap; gap: 4px; }
.label-row > span:first-child { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.label-row .error-msg { font-size: 0.75rem; font-weight: 600; color: var(--danger); white-space: nowrap; }
.format-hint { font-size: 0.75rem; color: var(--text-light); }
.input-row-combined { display: flex; align-items: center; gap: 0.5rem; background: var(--light-bg); border-radius: 8px; padding: 0.2rem 0.8rem; border: 1px solid var(--border); transition: border-color 0.2s, box-shadow 0.2s; width: 100%; max-width: 100%; }
.input-row-combined:focus-within { border-color: var(--primary); box-shadow: 0 0 0 2px rgba(30, 182, 222, 0.15); }
.hash-sign { font-size: 1.4rem; font-weight: 500; color: var(--text-light); padding-left: 0.4rem; user-select: none; flex-shrink: 0; }
#pgBaseHex { background: transparent; border: none; font-size: 1.4rem; font-family: 'SF Mono', monospace; font-weight: 500; padding: 0.7rem 0; width: 100%; min-width: 0; color: var(--text); letter-spacing: 0.5px; outline: none; text-transform: uppercase; }
#pgBaseHex::placeholder { color: var(--text-light); font-size: 1rem; text-transform: none; }
#pgBaseHex.invalid { color: var(--danger); }
.picker-inline { display: flex; align-items: center; margin-left: 0.2rem; flex-shrink: 0; }
#pgNativePicker { width: 42px; height: 42px; border: 2px solid var(--border); border-radius: 4px; background: transparent; cursor: pointer; padding: 0; overflow: hidden; }
#pgNativePicker::-webkit-color-swatch { border: none; border-radius: 2px; }
#pgNativePicker::-moz-color-swatch { border: none; border-radius: 2px; }
#pgNativePicker::-webkit-color-swatch-wrapper { padding: 0; }

/* ===== RGB SLIDERS WITH FULL SPECTRUM ===== */
.rgb-sliders {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--light-bg);
  padding: 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  width: 100%;
}
.slider-item {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: nowrap;
  width: 100%;
  padding: 0;
}
.slider-label { width: 32px; font-weight: 700; font-size: 1rem; text-align: center; flex-shrink: 0; }
.slider-label.r { color: #ef4444; }
.slider-label.g { color: #22c55e; }
.slider-label.b { color: #3b82f6; }
.slider-label { text-shadow: 0 1px 2px rgba(0,0,0,0.1); }

.rgb-slider-wrap {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0;
  flex: 1;
  min-width: 0;
  height: var(--thumb-size);
}
.rgb-gradient-track {
  position: absolute;
  left: 0;
  right: 0;
  height: var(--track-height);
  top: 50%;
  transform: translateY(-50%);
  border-radius: var(--track-radius);
  pointer-events: none;
  z-index: 0;
  border: 2px solid rgba(0, 0, 0, 0.15);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
  background-color: var(--switch-bg);
  background-repeat: no-repeat;
  background-position: center;
  background-size: 100% 100%;
  background-clip: padding-box;
}
#pgRTrack { background-image: var(--r-track, linear-gradient(to right, #000000, #ff0000)); }
#pgGTrack { background-image: var(--g-track, linear-gradient(to right, #000000, #00ff00)); }
#pgBTrack { background-image: var(--b-track, linear-gradient(to right, #000000, #0000ff)); }

.rgb-slider-wrap input[type="range"] {
  flex: 1;
  min-width: 0;
  height: var(--track-height);
  -webkit-appearance: none;
  background: transparent;
  border-radius: var(--track-radius);
  outline: none;
  cursor: pointer;
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 0;
  vertical-align: middle;
}
.rgb-slider-wrap input[type="range"]::-webkit-slider-runnable-track {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  height: var(--track-height);
  border-radius: var(--track-radius);
}
.rgb-slider-wrap input[type="range"]::-moz-range-track {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  height: var(--track-height);
  border-radius: var(--track-radius);
}
.rgb-slider-wrap input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: var(--thumb-size);
  height: var(--thumb-size);
  border-radius: 50%;
  border: 2px solid #ffffff;
  cursor: pointer;
  margin-top: -5px;
  position: relative;
  z-index: 2;
}
#pgRSlider::-webkit-slider-thumb {
  background: #ef4444;
  box-shadow: 0 2px 8px rgba(0,0,0,0.25), 0 0 0 1px rgba(239,68,68,0.3);
}
#pgGSlider::-webkit-slider-thumb {
  background: #22c55e;
  box-shadow: 0 2px 8px rgba(0,0,0,0.25), 0 0 0 1px rgba(34,197,94,0.3);
}
#pgBSlider::-webkit-slider-thumb {
  background: #3b82f6;
  box-shadow: 0 2px 8px rgba(0,0,0,0.25), 0 0 0 1px rgba(59,130,246,0.3);
}
.rgb-slider-wrap input[type="range"]::-moz-range-thumb {
  width: var(--thumb-size);
  height: var(--thumb-size);
  border-radius: 50%;
  border: 2px solid #ffffff;
  cursor: pointer;
  position: relative;
  z-index: 2;
}
#pgRSlider::-moz-range-thumb { background: #ef4444; box-shadow: 0 2px 8px rgba(0,0,0,0.25), 0 0 0 1px rgba(239,68,68,0.3); }
#pgGSlider::-moz-range-thumb { background: #22c55e; box-shadow: 0 2px 8px rgba(0,0,0,0.25), 0 0 0 1px rgba(34,197,94,0.3); }
#pgBSlider::-moz-range-thumb { background: #3b82f6; box-shadow: 0 2px 8px rgba(0,0,0,0.25), 0 0 0 1px rgba(59,130,246,0.3); }
[data-theme="dark"] .rgb-gradient-track { border-color: rgba(255, 255, 255, 0.1); }
[data-theme="dark"] .rgb-slider-wrap input[type="range"]::-webkit-slider-thumb,
[data-theme="dark"] .rgb-slider-wrap input[type="range"]::-moz-range-thumb { border-color: var(--card-bg); }

.rgb-number {
  width: 60px;
  padding: 5px 0;
  text-align: center;
  font-family: monospace;
  font-weight: 600;
  color: var(--text);
  font-size: 0.9rem;
  flex-shrink: 0;
  line-height: 1;
  align-self: center;
  margin: 0;
}
.rgb-number:focus { border-color: var(--primary); outline: none; }

/* ===== ALPHA CONTROL ===== */
.alpha-control {
  background: var(--light-bg);
  padding: 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: nowrap;
  width: 100%;
}
.alpha-label.slider-label {
  width: 32px;
  font-weight: 700;
  font-size: 1rem;
  text-align: center;
  flex-shrink: 0;
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  height: var(--thumb-size);
}
.alpha-label.slider-label i { pointer-events: none; font-size: 1rem; line-height: 1; }
.alpha-slider-wrap {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0;
  flex: 2;
  min-width: 0;
  height: var(--thumb-size);
}
.alpha-gradient-track {
  position: absolute;
  left: 0;
  right: 0;
  height: var(--track-height);
  top: 50%;
  transform: translateY(-50%);
  border-radius: var(--track-radius);
  pointer-events: none;
  z-index: 0;
  background-image: linear-gradient(45deg, rgba(0,0,0,0.08) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(0,0,0,0.08) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(0,0,0,0.08) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(0,0,0,0.08) 75%);
  background-size: 8px 8px;
  background-position: 0 0, 0 4px, 4px -4px, -4px 0px;
  border: 2px solid rgba(0, 0, 0, 0.15);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}
.alpha-gradient-track::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: var(--track-radius);
  background: linear-gradient(to right, rgba(0,0,0,0), rgba(0,0,0,1));
  mix-blend-mode: multiply;
  pointer-events: none;
}
.alpha-slider-wrap input[type="range"] {
  flex: 1;
  min-width: 0;
  height: var(--track-height);
  -webkit-appearance: none;
  background: transparent;
  border-radius: var(--track-radius);
  outline: none;
  cursor: pointer;
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 0;
  vertical-align: middle;
}
.alpha-slider-wrap input[type="range"]::-webkit-slider-runnable-track {
  background: transparent;
  height: var(--track-height);
  border-radius: var(--track-radius);
  border: none;
}
.alpha-slider-wrap input[type="range"]::-moz-range-track {
  background: transparent;
  height: var(--track-height);
  border-radius: var(--track-radius);
  border: none;
}
.alpha-slider-wrap input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: var(--thumb-size);
  height: var(--thumb-size);
  border-radius: 50%;
  background: var(--primary);
  border: 2px solid #ffffff;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0,0,0,0.25), 0 0 0 1px var(--primary);
  margin-top: -5px;
  position: relative;
  z-index: 2;
}
.alpha-slider-wrap input[type="range"]::-moz-range-thumb {
  width: var(--thumb-size);
  height: var(--thumb-size);
  border-radius: 50%;
  background: var(--primary);
  border: 2px solid #ffffff;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0,0,0,0.25), 0 0 0 1px var(--primary);
  border: none;
  position: relative;
  z-index: 2;
}
.alpha-value.rgb-number { align-self: center; }
[data-theme="dark"] .alpha-gradient-track {
  background-image: linear-gradient(45deg, rgba(255,255,255,0.12) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(255,255,255,0.12) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(255,255,255,0.12) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(255,255,255,0.12) 75%);
  border-color: rgba(255, 255, 255, 0.1);
}
[data-theme="dark"] .alpha-gradient-track::after { mix-blend-mode: screen; }
[data-theme="dark"] .alpha-slider-wrap input[type="range"]::-webkit-slider-thumb,
[data-theme="dark"] .alpha-slider-wrap input[type="range"]::-moz-range-thumb { border-color: var(--card-bg); }

/* ===== PALETTE GENERATOR SPECIFIC - CONSOLIDATED ===== */
.pg-harmony-block {
  position: relative;
  margin-bottom: 10px;
}
.pg-harmony-block:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}
.pg-harmony-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 0 4px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Palette bar - NO HEX ROWS BELOW (cleaner look) */
.palette-bar { 
  display: flex; 
  gap: 0; 
  margin-bottom: 0; 
  border-radius: 4px; 
  overflow: hidden; 
  height: 52px; 
  width: 100%; 
}
.palette-swatch { 
  flex: 1; 
  min-width: 0; 
  height: 100%; 
  cursor: pointer; 
  position: relative; 
  border: none; 
  padding: 0; 
  background: transparent; 
  border-radius: 0; 
  transition: flex 0.2s ease;
}
.palette-swatch:hover { flex: 1.3; border: none; }
.palette-swatch:first-child { border-radius: 3px 0 0 3px; }
.palette-swatch:last-child { border-radius: 0 3px 3px 0; }
.palette-swatch:hover::after,
.palette-swatch.active::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
  z-index: 3;
}
.palette-swatch:hover.light-bullet::after,
.palette-swatch.active.light-bullet::after { background: #0f172a; }
.palette-swatch:hover.dark-bullet::after,
.palette-swatch.active.dark-bullet::after { background: #ffffff; }

/* Bottom-floating hover actions - Tightened positioning */
.palette-hover-actions {
  position: absolute;
  /*top: auto;*/
  bottom: -30px; /* Lowered to sit closer to bottom edge */
  /*left: 4px;*/
  right: 0;
  transform: none;
  display: flex;
  gap: 6px;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(6px);
  border-radius: 6px;
  padding: 6px 10px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.15s ease, visibility 0.15s ease;
  z-index: 25; /* Sits above native titles */
  pointer-events: none;
}

.pg-harmony-block:hover .palette-hover-actions {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.palette-action-btn {
  padding: 5px 10px;
  font-size: 11px;
  min-height: auto;
  height: 26px;
  border-radius: 4px;
  color: #ffffff;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.2);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: background 0.15s;
}
.palette-action-btn:hover {
  background: rgba(255, 255, 255, 0.25);
}

/* ===== PALETTE PRESETS SELECTOR ===== */
.palette-selector-section {
  background: var(--light-bg);
  padding: 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  margin: 0px;
  width: 100%;
}

/* ===== PRESET GRID - DESKTOP DEFAULT (16 columns, 38px max, 2px gap) ===== */
.palette-presets-grid {
  display: grid;
  /* Desktop: exactly 16 columns like original */
  grid-template-columns: repeat(16, 1fr);
  gap: 2px; /* Small gap like original */
  width: 100%;
}

/* ===== PRESET SWATCH - 38x38px MAX CAP ===== */
.preset-swatch {
  width: 100%;
  aspect-ratio: 1 / 1;
  min-width: 28px;
  max-width: 38px !important;  /* ✅ Hard cap: never exceed 38px wide */
  max-height: 38px !important; /* ✅ Hard cap: never exceed 38px tall */
  height: auto;
  flex: none; /* ✅ Prevents flex/grid stretch */
  border-radius: 0;
  border: none;
  cursor: pointer;
  padding: 0;
  position: relative;
  background: transparent;
  transition: box-shadow 0.15s;
}

/* ✅ Stable hover: no transform, just subtle shadow */
.preset-swatch:hover {
  box-shadow: 0 2px 8px rgba(0,0,0,0.12);
  z-index: 2;
  border: none;
}
.preset-swatch:active { box-shadow: 0 1px 4px rgba(0,0,0,0.08); }
.preset-swatch:hover::after,
.preset-swatch.active::after {
  content: ''; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 6px; height: 6px; border-radius: 50%; box-shadow: 0 1px 3px rgba(0,0,0,0.3); z-index: 3;
}
.preset-swatch:hover.light-bullet::after, .preset-swatch.active.light-bullet::after { background: #0f172a; }
.preset-swatch:hover.dark-bullet::after, .preset-swatch.active.dark-bullet::after { background: #ffffff; }

/* ===== RESPONSIVE: PREVENT OVERSIZING ON 1105-1400px (THE PROBLEM RANGE) ===== */
/* This is where swatches were getting too big - use auto-fill + minmax to constrain */
@media (max-width: 1399px) and (min-width: 1100px) {
  .palette-presets-grid {
    /* ✅ Switch to auto-fill + minmax to prevent oversized cells */
    grid-template-columns: repeat(auto-fill, minmax(32px, 1fr));
    gap: 4px; /* Slightly larger gap for readability */
  }
  .preset-swatch {
    min-width: 32px;
    /* max-width/max-height still capped at 38px by base rule */
  }
}

/* ===== TABLET: 4 columns, history-style sizing ===== */
@media (max-width: 1099px) {
  .palette-presets-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
  }
  .preset-swatch {
    min-width: 36px;
    /* Still capped at 38px by base rule */
  }
}

/* ===== MOBILE: auto-fill small, compact ===== */
@media (max-width: 600px) {
  .palette-presets-grid {
    grid-template-columns: repeat(auto-fill, minmax(28px, 1fr));
    gap: 4px;
  }
  .preset-swatch {
    min-width: 28px;
    max-width: 36px !important; /* Slightly smaller cap on mobile */
    max-height: 36px !important;
  }
}

/* ===== OUTPUT GRID ===== */
.outputs-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2px; width: 100%; }
.output-card { background: var(--light-bg); padding: 8px 10px; border-radius: 8px; border: 1px solid var(--border); display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 0px; min-width: 0; }
.output-card label { grid-column: 1 / -1; font-size: 0.80rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-light); margin-bottom: 2px; }
.output-value { font-family: monospace; font-size: 0.85rem; color: var(--text); word-break: break-all; line-height: 1.3; min-width: 0; }
.copy-actions { display: flex; gap: 4px; grid-column: 2; justify-content: flex-end; align-items: center; }
.copy-trigger { width: 32px; min-width: 32px; height: 32px; min-height: 32px; padding: 0; justify-content: center; border-radius: 6px; white-space: nowrap; flex-shrink: 0; }
.copy-trigger i { font-size: 13px; flex-shrink: 0; pointer-events: none; }
.copy-trigger.copied { background: var(--success); border-color: var(--success); color: white; }
.icon-copy-trigger { background: transparent; border: none; padding: 0 0.6rem; cursor: pointer; display: flex; align-items: center; justify-content: center; color: var(--text-light); transition: color 0.2s, background 0.2s; min-width: 32px; height: 32px; flex-shrink: 0; }
.icon-copy-trigger:hover { color: var(--primary); background: rgba(30, 182, 222, 0.1); }
.icon-copy-trigger i { font-size: 20px; pointer-events: none; }
.icon-copy-trigger.copied { color: var(--success); }

/* ===== CONTRAST SECTION ===== */
.contrast-section { background: var(--light-bg); padding: 12px; border-radius: 8px; border: 1px solid var(--border); width: 100%; }
.section-title-custom { font-size: 0.9rem; font-weight: 600; color: var(--text); margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
.contrast-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.contrast-card { padding: 8px 10px; border-radius: 8px; border: 1px solid var(--border); display: flex; flex-direction: column; gap: 4px; }
.contrast-card.white { background: #ffffff !important; color: #0f172a !important; border-color: #e2e8f0 !important; }
.contrast-card.black { background: #000000 !important; color: #f1f5f9 !important; border-color: #333333 !important; }
.contrast-label { font-size: 0.75rem; font-weight: 500; }
.contrast-ratio { font-family: monospace; font-size: 1.1rem; font-weight: 700; }
.contrast-help { margin-left: 6px; color: var(--text-light); cursor: help; font-size: 0.9rem; transition: color 0.2s; display: inline-flex; align-items: center; }
.contrast-help:hover { color: var(--primary); }
.contrast-help i { pointer-events: none; vertical-align: middle; }
.contrast-preview { margin-top: 2px; padding: 9px 10px; border-radius: 4px; font-weight: 600; font-size: 1.1rem; text-align: center; transition: color 0.15s, text-shadow 0.15s; color: #3498db; }
.contrast-card.white .contrast-preview { background: #ffffff; text-shadow: 0 1px 2px rgba(0,0,0,0.1); }
.contrast-card.black .contrast-preview { background: #000000; text-shadow: 0 1px 3px rgba(255,255,255,0.2); }
.wcag-badges { display: flex; gap: 4px; flex-wrap: wrap; margin-top: 2px; }
.wcag-badge { font-size: 0.65rem; padding: 0.15rem 0.4rem; border-radius: 4px; font-weight: 600; text-transform: uppercase; }
.wcag-badge.pass { background: #dcfce7 !important; color: #166534 !important; }
.wcag-badge.fail { background: #fee2e2 !important; color: #991b1b !important; }

/* ===== PREVIEW AREA ===== */
.preview-large { position: relative; border-radius: 12px; overflow: hidden; border: 1px solid var(--border); background: var(--light-bg); cursor: pointer; width: 100%; }
.checkerboard { position: relative; width: 100%; padding-top: 20%; background-image: linear-gradient(45deg, var(--border) 25%, transparent 25%), linear-gradient(-45deg, var(--border) 25%, transparent 25%), linear-gradient(45deg, transparent 75%, var(--border) 75%), linear-gradient(-45deg, transparent 75%, var(--border) 75%); background-size: 20px 20px; background-position: 0 0, 0 10px, 10px -10px, -10px 0px; }
.preview-fill { position: absolute; inset: 0; transition: background-color 0.15s; display: flex; align-items: center; justify-content: center; }
.preview-hex-display { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); font-family: monospace; font-size: 1.8rem; font-weight: 700; text-shadow: 0 2px 8px rgba(0,0,0,0.5); pointer-events: none; user-select: none; letter-spacing: 1px; transition: color 0.15s; }
.preview-hex-display.light-text { color: #0f172a !important; text-shadow: 0 1px 4px rgba(255,255,255,0.9) !important; }
.preview-hex-display.dark-text { color: #ffffff !important; text-shadow: 0 2px 8px rgba(0,0,0,0.6) !important; }
.preview-actions { position: absolute; top: 10px; right: 10px; display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; z-index: 2; pointer-events: auto; }
.preview-actions button { padding: 0.3rem 0.7rem; min-height: 28px; background: rgba(255,255,255,0.5); color: #0f172a; border-color: rgba(0,0,0,0.2); backdrop-filter: blur(4px); pointer-events: auto; }
.preview-actions button:hover { background: rgba(255,255,255,1); border-color: var(--primary); }
.preview-actions button.dark-bg { background: rgba(15,23,42,0.70); color: #f1f5f9; border-color: rgba(255,255,255,0.3); }
.preview-actions button.dark-bg:hover { background: rgba(15,23,42,0.95); border-color: var(--primary); }

/* ===== HISTORY SECTION ===== */
.history-section { 
  background: var(--light-bg); 
  padding: 12px; 
  border-radius: 8px; 
  border: 1px solid var(--border); 
  width: 100%; 
}
.history-section .section-title-custom { margin-bottom: 8px; }
.history-grid { 
  display: grid; 
  grid-template-columns: repeat(auto-fill, minmax(40px, 1fr)); 
  gap: 0px; 
  width: 100%; 
  row-gap: 0px; 
}
.history-swatch { 
  width: 100%; 
  aspect-ratio: 1 / 1; 
  min-width: 36px; 
  height: auto; 
  flex: none; 
  border-radius: 0; 
  cursor: pointer; 
  border: none; 
  padding: 0; 
  position: relative; 
  transition: box-shadow 0.15s; 
}
/* ✅ Stable hover for history swatches */
.history-swatch:hover { 
  box-shadow: 0 2px 8px rgba(0,0,0,0.12); 
}
button.history-swatch:hover { box-shadow: 0 2px 8px rgba(0,0,0,0.12); border: none; }
.history-swatch svg { display: none; }
.history-swatch:hover::after, .history-swatch.active::after { 
  content: ''; 
  position: absolute; 
  top: 50%; 
  left: 50%; 
  transform: translate(-50%, -50%); 
  width: 8px; 
  height: 8px; 
  border-radius: 50%; 
  box-shadow: 0 1px 3px rgba(0,0,0,0.3); 
  z-index: 3;
}
.history-swatch:hover.light-bullet::after, .history-swatch.active.light-bullet::after { background: #0f172a; }
.history-swatch:hover.dark-bullet::after, .history-swatch.active.dark-bullet::after { background: #ffffff; }

[data-theme="dark"] .history-swatch {
  background-color: inherit !important;
}

/* ===== CURATED MATCHES SECTION ===== */
.pg-harmonies-section {
  background: var(--light-bg);
  padding: 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  margin: 0;
  width: 100%;
}
.match-count {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--text-light);
  margin-left: auto;
}
.similar-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 8px;
  margin: 10px 0;
}
.similar-palette-card {
  background: var(--card-bg);
  border-radius: 4px;
  border: 1px solid var(--border);
  cursor: pointer;
  overflow: hidden;
  transition: border-color 0.15s, box-shadow 0.15s;
}
/* ✅ Stable hover for curated cards */
.similar-palette-card:hover {
  border-color: var(--primary);
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.similar-swatch-row {
  display: flex;
  height: 24px;
}
.similar-swatch {
  flex: 1;
  min-width: 0;
  height: 100%;
}
.similar-palette-name {
  font-size: 0.75rem;
  padding: 6px 8px;
  text-align: center;
  color: var(--text-light);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.similar-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}
.no-matches {
  font-size: 0.85rem;
  color: var(--text-light);
  padding: 12px;
  text-align: center;
}

/* ===== SMART HYBRID EXPORT SYSTEM - FIXED (NO BLUR) ===== */
.export-dropdown { position: relative; display: inline-block; }

.export-trigger {
  font-family: inherit; font-size: 13px; font-weight: 600; border-radius: 3px;
  cursor: pointer; transition: background 0.2s, border-color 0.2s;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--light-bg); color: var(--text); border: 1px solid var(--border);
  min-height: 34px; white-space: nowrap; text-shadow: none; flex-shrink: 0;
}
.export-trigger:hover { 
  border-color: var(--primary); 
  background: rgba(30,182,222,0.08); 
}

/* FIXED: Removed backdrop-filter blur, simplified transform, higher z-index */
.export-menu {
  position: absolute; 
  top: 100%; 
  right: 0; 
  margin-top: 6px; 
  background: var(--card-bg);
  border: 1px solid var(--border); 
  border-radius: 6px; 
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
  min-width: 230px; 
  z-index: 1000; /* Higher z-index to avoid stacking context issues */
  opacity: 0; 
  visibility: hidden;
  transform: translateY(-2px); /* Reduced offset for crisper rendering */
  transition: opacity 0.15s ease, visibility 0.15s ease, transform 0.15s ease;
  pointer-events: none; 
  overflow: hidden;
  /* REMOVED: will-change, backdrop-filter - these cause blur on some GPUs */
  backface-visibility: hidden; /* Keeps text sharp during animation */
  -webkit-font-smoothing: antialiased; /* Ensures crisp text */
  -moz-osx-font-smoothing: grayscale;
}

.export-dropdown.open .export-menu { 
  opacity: 1; 
  visibility: visible; 
  transform: translateY(0); 
  pointer-events: auto; 
}

.export-menu-title { 
  font-size: 0.75rem; 
  font-weight: 700; 
  text-transform: uppercase; 
  letter-spacing: 0.05em; 
  color: var(--text-light); 
  padding: 10px 12px 6px; 
  border-bottom: 1px solid var(--border); 
}

.export-item {
  width: 100%; 
  text-align: left; 
  padding: 10px 12px; 
  background: transparent; 
  border: none;
  border-radius: 0; 
  cursor: pointer; 
  font-size: 13px; 
  color: var(--text); 
  display: flex;
  align-items: center; 
  gap: 8px; 
  transition: background 0.15s; 
  min-height: auto;
  justify-content: normal;
}
.export-item:hover { 
  background: var(--light-bg); 
  color: var(--primary);
  border: none;
}
.export-item i { width: 16px; text-align: center; }

/* Responsive */
@media (max-width: 600px) {
  .export-dropdown { width: 100%; }
  .export-trigger { width: 100%; justify-content: center; }
  .export-menu { right: 0; left: 0; min-width: 100%; }
}



/* ===== QUICK COPY BAR ===== */
.quick-copy-bar { display: flex; gap: 8px; flex-wrap: wrap; width: 100%; }
.quick-copy-bar .copy-trigger { flex: 1; min-width: 140px; justify-content: center; padding: 0 10px; height: 34px; }

/* ===== TOAST NOTIFICATIONS ===== */
#pgToastContainer { position: fixed; bottom: 20px; right: 20px; z-index: 1000; display: flex; flex-direction: column; gap: 6px; pointer-events: none; max-width: calc(100% - 40px); }
.toast { background: var(--toast-bg); color: white; padding: 10px 16px; border-radius: 5px; box-shadow: 0 4px 12px rgba(0,0,0,0.15); display: flex; align-items: center; gap: 8px; font-size: 13px; pointer-events: auto; max-width: 300px; border-left: 4px solid var(--primary); animation: toastSlideUp 0.25s ease, toastFadeOut 0.25s ease 2.5s forwards; }
.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--danger); }
.toast.info { border-left-color: var(--info); }
@keyframes toastSlideUp { from { opacity: 0; transform: translateY(15px); } to { opacity: 1; transform: translateY(0); } }
@keyframes toastFadeOut { to { opacity: 0; transform: translateY(8px); } }

/* ===== SHARE BUTTON - STABLE ===== */
.share-btn { 
  background: linear-gradient(135deg, #df3676, #c0265e) !important; 
  border: 1px solid #AD1C53 !important; 
  color: white !important; 
  font-weight: 600; 
  box-shadow: 0 2px 8px rgba(223, 54, 118, 0.25) !important; 
  transition: background 0.2s, box-shadow 0.2s !important; 
  order: -1;
  will-change: auto; backface-visibility: hidden;
}
/* ✅ Stable hover: no transform/filter */
.share-btn:hover { 
  background: linear-gradient(135deg, #c61a5c, #a81e4f) !important; 
  box-shadow: 0 4px 12px rgba(223, 54, 118, 0.4) !important; 
  border: 1px solid #81153E !important; 
}
.share-btn:active { box-shadow: 0 2px 6px rgba(223, 54, 118, 0.2); }
[data-theme="dark"] .share-btn { background: linear-gradient(135deg, #f04c81, #df3676); border-color: #f04c81; box-shadow: 0 2px 8px rgba(223, 54, 118, 0.4); }
[data-theme="dark"] .share-btn:hover { box-shadow: 0 4px 12px rgba(223, 54, 118, 0.6); }

/* ===== RESPONSIVE BREAKPOINTS ===== */
@media (max-width: 1099px) {
  .hex-tool-grid { padding: 16px; }
  .outputs-grid { grid-template-columns: 1fr; }
  .contrast-grid { grid-template-columns: 1fr; }
  .preview-actions { position: static; justify-content: center; margin-top: 10px; }
  .btn-group { width: 100%; justify-content: center; }
  .btn-group button { flex: 1; }
  .palette-presets-grid { grid-template-columns: repeat(auto-fill, minmax(40px, 1fr)); }
}
@media (max-width: 600px) {
  .container-custom { border-radius: 0; width: 100%; }
  .tool-header { padding: 16px 12px 0 12px; }
  .tool-header-content { flex-direction: column; align-items: stretch; }
  .hex-tool-grid { padding: 12px; gap: 12px; }
  .hex-input-column, .hex-preview-column { gap: 2px; }
  .input-row-combined { padding: 0.2rem 0.6rem; }
  .rgb-sliders { padding: 10px; }
  .slider-item { gap: 8px; }
  .alpha-control { flex-wrap: wrap; gap: 8px; }
  .alpha-slider-wrap { width: 100%; max-width: none; }
  .palette-bar { height: 44px; }
  #pgToastContainer { left: 12px; right: 12px; bottom: 12px; width: auto; }
  .toast { max-width: none; width: 100%; }
  .label-row { flex-wrap: wrap; gap: 6px; }
  .btn-group { width: 100%; }
  .btn-group button { flex: 1; justify-content: center; }
  .quick-copy-bar { flex-direction: column; }
  .quick-copy-bar .copy-trigger { width: 100%; }
  .preview-hex-display { font-size: 1.4rem; }
  .history-grid { grid-template-columns: repeat(auto-fill, minmax(28px, 1fr)); }
  .history-swatch { min-width: 28px; }
  .pg-harmony-title { font-size: 0.8rem; }
  .pg-harmony-block { margin-bottom: 10px; } /* Updated padding */
  .rgb-number { width: 52px; font-size: 0.85rem; }
  .palette-presets-grid { grid-template-columns: repeat(auto-fill, minmax(28px, 1fr)); }
}

/* ===== FINAL STABILITY GUARANTEES ===== */
/* Force all interactive elements to render without subpixel shift */
button,
.export-trigger,
.export-item,
.palette-action-btn,
.preset-swatch,
.history-swatch,
.palette-swatch,
.similar-palette-card,
.share-btn,
.copy-trigger,
.icon-copy-trigger {
  /* Neutralize any transform/filter that could cause jerk */
  transform: none !important;
  filter: none !important;
  /* Ensure consistent rendering */
  will-change: auto;
  backface-visibility: hidden;
  /* Smooth but stable transitions */
  transition-property: background, border-color, color, box-shadow, opacity;
}

/* Ensure dropdown menu animates smoothly without jump */
.export-menu {
  transition: opacity 0.15s ease, visibility 0.15s ease, transform 0.15s ease;
}
.export-dropdown.open .export-menu {
  transform: translateY(0);
}