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

:root {
  --bg-page: #f0f0f0;
  --bg-card: #ffffff;
  --bg-controls: #f5f5f5;
  --bg-stats: #f5f5f5;
  --text-primary: #111111;
  --text-secondary: #555555;
  --text-label: #333333;
  --border: #dddddd;
  --stat-bg: #ffffff;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.15);
}

[data-theme="dark"] {
  --bg-page: #000000;
  --bg-card: #111111;
  --bg-controls: #1e1e1e;
  --bg-stats: #1e1e1e;
  --text-primary: #f0f0f0;
  --text-secondary: #aaaaaa;
  --text-label: #cccccc;
  --border: #333333;
  --stat-bg: #2a2a2a;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.6);
}

body {
  background: var(--bg-page);
  min-height: 100vh;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  padding-top: 70px;
  transition: background 0.3s ease;
}

/* ── Fixed page-level theme toggle (top-right of viewport) ── */
.theme-toggle {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 999;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  border: 2px solid var(--border);
  background: var(--bg-card);
  cursor: pointer;
  font-size: 1.25em;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-md);
}
.theme-toggle:hover {
  transform: scale(1.08);
}

.container {
  background: var(--bg-card);
  border-radius: 20px;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 600px;
  padding: 40px;
  animation: slideUp 0.6s ease-out;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── Header: icon + title SIDE BY SIDE ── */
.header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-bottom: 36px;
}

.header-icon {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
}

.header-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.header h1 {
  font-size: 2.4em;
  font-weight: 800;
  line-height: 1;
  background: linear-gradient(
    90deg,
    #ff0000,
    #ff7700,
    #ffdd00,
    #00cc44,
    #0088ff,
    #6600cc,
    #cc00cc
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header p {
  color: var(--text-secondary);
  font-size: 0.82em;
}

/* ── Controls ── */
.controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
  margin-bottom: 28px;
  background: var(--bg-controls);
  padding: 18px;
  border-radius: 12px;
  transition: background 0.3s ease;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.control-group label {
  font-weight: 700;
  font-size: 0.8em;
  color: var(--text-label);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.control-group input {
  padding: 10px 12px;
  border: 2px solid var(--border);
  border-radius: 8px;
  font-size: 0.95em;
  background: var(--bg-card);
  color: var(--text-primary);
  transition: all 0.3s ease;
}
.control-group input:focus {
  outline: none;
  border-color: #888;
}

.error {
  color: #d32f2f;
  font-size: 0.75em;
  margin-top: 4px;
  font-weight: 600;
  min-height: 16px;
}

.color-picker {
  display: flex;
  gap: 8px;
  margin-top: 4px;
  flex-wrap: wrap;
}

.color-option {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  cursor: pointer;
  border: 3px solid transparent;
  transition: all 0.25s ease;
}
.color-option:hover {
  transform: scale(1.12);
}
.color-option.selected {
  border-color: #333;
  box-shadow: 0 0 0 2px #fff, 0 0 0 4px #333;
}
[data-theme="dark"] .color-option.selected {
  border-color: #fff;
  box-shadow: 0 0 0 2px #111, 0 0 0 4px #fff;
}

/* ── Buttons ── */
.button-group {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 26px 0;
}

button {
  border: none;
  border-radius: 10px;
  font-size: 0.92em;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.25s ease;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  box-shadow: var(--shadow-sm);
}

/* Roll Dice & Reset Stats — equal width, flanking the sound btn */
.btn-roll,
.btn-reset {
  flex: 1;
  padding: 15px 10px;
}

/* Roll Dice — black bg, white text */
.btn-roll {
  background: #222222;
  color: #ffffff;
}
/* dark mode: cream bg, black text */
[data-theme="dark"] .btn-roll {
  background: #f5f0e8;
  color: #111111;
}
.btn-roll:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.btn-roll:active {
  transform: translateY(0);
}
.btn-roll:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

/* Reset Stats — black bg, white text */
.btn-reset {
  background: #111111;
  color: #ffffff;
}
[data-theme="dark"] .btn-reset {
  background: #f5f0e8;
  color: #111111;
}
.btn-reset:hover {
  opacity: 0.85;
  transform: translateY(-1px);
}

/* Sound toggle — fixed square, centred between the two */
.btn-sound {
  flex: 0 0 52px;
  width: 52px;
  height: 52px;
  padding: 0;
  font-size: 1.2em;
  background: #e8e8e8;
  color: #333333;
  display: flex;
  align-items: center;
  justify-content: center;
}
[data-theme="dark"] .btn-sound {
  background: #2a2a2a;
  color: #cccccc;
}
.btn-sound:hover {
  background: var(--border);
}

/* ── Dice SVG faces ── */
.dice-display {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin: 32px 0;
  flex-wrap: wrap;
  min-height: 120px;
}

.dice-wrap {
  width: 110px;
  height: 110px;
}

.dice-wrap.rolling svg {
  animation: rollDice 0.65s cubic-bezier(0.68, -0.55, 0.27, 1.55);
}

@keyframes rollDice {
  0% {
    transform: rotate(0deg) scale(1);
  }
  20% {
    transform: rotate(-25deg) scale(1.06);
  }
  50% {
    transform: rotate(370deg) scale(0.95);
  }
  75% {
    transform: rotate(340deg) scale(1.03);
  }
  100% {
    transform: rotate(360deg) scale(1);
  }
}

.dice-wrap svg {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.18));
}

/* ── Result message ── */
.result-message {
  text-align: center;
  margin: 10px 0;
  font-size: 1.05em;
  font-weight: 600;
  color: var(--text-primary);
  opacity: 0;
  min-height: 26px;
}
.result-message.show {
  animation: fadeUp 0.45s ease forwards;
}
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── Stats ── */
.stats-section {
  background: var(--bg-stats);
  padding: 18px;
  border-radius: 12px;
  margin-top: 26px;
  transition: background 0.3s ease;
}

.stats-title {
  font-weight: 700;
  font-size: 0.82em;
  color: var(--text-label);
  margin-bottom: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 14px;
}

.stat-item {
  background: var(--stat-bg);
  padding: 12px;
  border-radius: 8px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.stat-label {
  font-size: 0.72em;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}
.stat-value {
  font-size: 1.5em;
  font-weight: 800;
  color: var(--text-primary);
  margin-top: 2px;
}

.distribution {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 7px;
}
.dist-item {
  background: var(--stat-bg);
  padding: 8px 6px 10px;
  border-radius: 6px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.dist-number {
  font-weight: 700;
  color: var(--text-primary);
  font-size: 0.9em;
  margin-bottom: 6px;
}
.dist-tally {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 28px;
}
.dist-tally svg line {
  stroke: var(--text-primary);
}
.dist-zero {
  font-size: 0.65em;
  color: var(--text-secondary);
  opacity: 0.4;
}

@media (max-width: 520px) {
  .container {
    padding: 24px;
  }
  .header h1 {
    font-size: 1.8em;
  }
  .header-icon {
    width: 44px;
    height: 44px;
  }
  .dice-wrap {
    width: 90px;
    height: 90px;
  }
  .controls {
    grid-template-columns: 1fr;
  }
}

/* ── Color Picker with Custom Picker ── */
.color-picker-wrapper {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
}

.color-picker {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(32px, 1fr));
  gap: 6px;
  padding: 8px;
  background: var(--bg-card);
  border-radius: 8px;
  border: 2px solid var(--border);
  max-height: 120px;
  overflow-y: auto;
  transition: all 0.3s ease;
}

.color-picker::-webkit-scrollbar {
  width: 4px;
}

.color-picker::-webkit-scrollbar-track {
  background: var(--bg-page);
  border-radius: 4px;
}

.color-picker::-webkit-scrollbar-thumb {
  background: var(--text-secondary);
  border-radius: 4px;
}

.color-picker-divider {
  border-top: 1px solid var(--border);
  margin: 4px 0;
}

.color-picker-custom {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 8px;
  background: var(--bg-card);
  border-radius: 8px;
  border: 2px solid var(--border);
}

.color-picker-custom label {
  font-size: 0.75em;
  font-weight: 600;
  color: var(--text-label);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  cursor: pointer;
}

#customColorPicker {
  width: 44px;
  height: 44px;
  border: 2px solid var(--border);
  border-radius: 6px;
  padding: 2px;
  cursor: pointer;
  background: transparent;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

#customColorPicker:hover {
  transform: scale(1.05);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

#customColorPicker::-webkit-color-swatch-wrapper {
  padding: 0;
}

#customColorPicker::-webkit-color-swatch {
  border: none;
  border-radius: 4px;
}

.color-option {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 6px;
  cursor: pointer;
  border: 3px solid transparent;
  transition: all 0.2s ease;
  min-width: 28px;
}

.color-option:hover {
  transform: scale(1.15);
  z-index: 2;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.color-option.selected {
  border-color: #333;
  box-shadow: 0 0 0 2px #fff, 0 0 0 4px #333;
  transform: scale(1.1);
}

[data-theme="dark"] .color-option.selected {
  border-color: #fff;
  box-shadow: 0 0 0 2px #111, 0 0 0 4px #fff;
}

/* ── Responsive adjustments ── */
@media (max-width: 520px) {
  .color-picker {
    grid-template-columns: repeat(auto-fill, minmax(28px, 1fr));
    max-height: 100px;
    gap: 4px;
    padding: 6px;
  }
  
  .color-option {
    min-width: 24px;
  }
  
  #customColorPicker {
    width: 36px;
    height: 36px;
  }
}

@media (min-width: 768px) {
  .color-picker {
    grid-template-columns: repeat(auto-fill, minmax(36px, 1fr));
  }
}