/* ===========================
   DESIGN SYSTEM - Variables
   =========================== */
:root {
  /* Color Palette - Professional blue/slate theme */
  --color-primary: #3b82f6;      /* Bright blue */
  --color-primary-dark: #2563eb;  /* Darker blue */
  --color-primary-light: #60a5fa; /* Light blue */

  --color-secondary: #10b981;     /* Success green */
  --color-danger: #ef4444;        /* Error red */
  --color-warning: #f59e0b;       /* Warning amber */

  /* Neutral Colors */
  --color-bg: #f8fafc;            /* Light background */
  --color-surface: #ffffff;       /* Card background */
  --color-surface-alt: #f1f5f9;   /* Alternative surface */

  --color-text: #1e293b;          /* Primary text */
  --color-text-muted: #64748b;    /* Secondary text */
  --color-text-light: #94a3b8;    /* Tertiary text */

  --color-border: #e2e8f0;        /* Default border */
  --color-border-hover: #cbd5e1;  /* Hover border */

  /* Board Colors */
  --board-tile: #f1f5f9;          /* Normal tile */
  --board-tile-alt: #e2e8f0;      /* Alternate tile */
  --board-special: #dbeafe;       /* Special squares */
  --board-goose: #dcfce7;         /* Goose squares */
  --board-finish: #fef3c7;        /* Finish square */

  /* Spacing System */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
}

/* Dark Mode Variables - Disabled by default for consistency */
/* Uncomment the block below if you want to enable dark mode support */
/*
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0f172a;
    --color-surface: #1e293b;
    --color-surface-alt: #334155;

    --color-text: #f1f5f9;
    --color-text-muted: #94a3b8;
    --color-text-light: #64748b;

    --color-border: #334155;
    --color-border-hover: #475569;

    --board-tile: #1e293b;
    --board-tile-alt: #334155;
    --board-special: #1e3a8a;
    --board-goose: #14532d;
    --board-finish: #713f12;
  }
}
*/

/* ===========================
   BASE STYLES
   =========================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
}

/* ===========================
   LAYOUT
   =========================== */
header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-lg) var(--space-xl);
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.app {
  display: grid;
  grid-template-columns: minmax(320px, 1fr) 380px;
  background-color: var(--color-surface-alt);
  gap: var(--space-xl);
  padding: var(--space-xl);
  max-width: 1400px;
  margin: 0 auto;
}

@media (max-width: 1024px) {
  .app {
    grid-template-columns: 1fr;
    padding: var(--space-lg);
  }
}

/* ===========================
   GAME BOARD
   =========================== */
.board-wrap {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.board-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.stats {
  display: flex;
  gap: var(--space-md);
  align-items: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-md);
  background-color: var(--color-surface-alt);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-muted);
}

.badge strong {
  color: var(--color-text);
  margin-left: var(--space-xs);
}

/* Topic Selector */
.topic-selector {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.topic-dropdown {
  appearance: none;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  padding: var(--space-sm) var(--space-lg) var(--space-sm) var(--space-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='%2364748b' viewBox='0 0 16 16'%3e%3cpath d='M7.247 11.14L2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right var(--space-sm) center;
  background-size: 12px;
}

.topic-dropdown:hover {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.topic-dropdown:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

/* Game Board Grid */
.board {
  aspect-ratio: 1;
  width: 100%;
  display: grid;
  grid-template-columns: repeat(var(--grid), 1fr);
  gap: var(--space-xs);
  padding: var(--space-md);
  background-color: var(--color-surface-alt);
  border-radius: var(--radius-md);
}

.cell {
  position: relative;
  background-color: var(--board-tile);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-xs);
  cursor: pointer;
  transition: all var(--transition-base);
}

.cell:nth-child(odd) {
  background-color: var(--board-tile-alt);
}

.cell.special {
  background-color: var(--board-special);
  border-color: var(--color-primary-light);
}

.cell.goose {
  background-color: var(--board-goose);
  border-color: var(--color-secondary);
}

.cell.finish {
  background-color: var(--board-finish);
  border: 2px solid var(--color-warning);
}

.cell:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  z-index: 10;
}

.cell .num {
  position: absolute;
  top: var(--space-xs);
  left: var(--space-xs);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-text-light);
}

.cell .icon {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-align: center;
  line-height: 1.2;
}

/* Game Tokens */
.token {
  position: absolute;
  width: 60%;
  height: 60%;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--font-size-sm);
  color: white;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base);
  z-index: 5;
}

.token:hover {
  transform: scale(1.1);
}

.token.player-1 { background: linear-gradient(135deg, #3b82f6, #2563eb); }
.token.player-2 { background: linear-gradient(135deg, #10b981, #059669); }
.token.player-3 { background: linear-gradient(135deg, #f59e0b, #d97706); }
.token.player-4 { background: linear-gradient(135deg, #ef4444, #dc2626); }

/* Multiple tokens positioning */
.token.top-left { top: 15%; left: 15%; width: 35%; height: 35%; }
.token.top-right { top: 15%; right: 15%; width: 35%; height: 35%; }
.token.bottom-left { bottom: 15%; left: 15%; width: 35%; height: 35%; }
.token.bottom-right { bottom: 15%; right: 15%; width: 35%; height: 35%; }

.token:only-of-type {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60%;
  height: 60%;
}

/* ===========================
   SIDEBAR
   =========================== */
.side {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
  transition: box-shadow var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-lg);
}

.card h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

.muted {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

/* Dice */
.dice-area {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.dice {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: white;
  box-shadow: var(--shadow-md);
  -webkit-user-select: none;
  user-select: none;
  transition: transform var(--transition-base);
}

.dice.roll {
  animation: diceRoll 0.6s ease;
}

@keyframes diceRoll {
  0%, 100% { transform: rotate(0deg) scale(1); }
  25% { transform: rotate(-15deg) scale(1.1); }
  75% { transform: rotate(15deg) scale(1.1); }
}

/* Buttons */
.btn {
  appearance: none;
  border: none;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: white;
  font-size: var(--font-size-base);
  font-weight: 600;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn:active:not(:disabled) {
  transform: translateY(0);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn.small {
  font-size: var(--font-size-sm);
  padding: var(--space-xs) var(--space-md);
}

/* Secondary Button Style */
.btn.btn-secondary {
  background: linear-gradient(135deg, #64748b, #475569);
  box-shadow: var(--shadow-md);
}

.btn.btn-secondary:hover:not(:disabled) {
  background: linear-gradient(135deg, #475569, #334155);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn.btn-secondary:focus-visible {
  outline: 2px solid #64748b;
  outline-offset: 2px;
}

/* Stats List */
.list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.kv {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm);
  background-color: var(--color-surface-alt);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
}

.kv strong {
  font-weight: 600;
  color: var(--color-text);
}

/* Rules */
.rules details {
  background-color: var(--color-surface-alt);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin-bottom: var(--space-sm);
}

.rules summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--color-text);
  -webkit-user-select: none;
  user-select: none;
}

.rules summary:hover {
  color: var(--color-primary);
}

.tags {
  display: flex;
  gap: var(--space-xs);
  flex-wrap: wrap;
  margin-top: var(--space-sm);
}

.tag {
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  background-color: var(--color-primary-light);
  color: white;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 500;
}

/* Players List */
.players-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.player-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md);
  background-color: var(--color-surface-alt);
  border-radius: var(--radius-md);
  border-left: 3px solid transparent;
  transition: all var(--transition-base);
}

.player-item.active {
  background-color: rgba(59, 130, 246, 0.1);
  border-left-color: var(--color-primary);
}

.player-info {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.player-token {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  color: white;
  font-weight: 600;
}

.player-1 .player-token { background: var(--color-primary); }
.player-2 .player-token { background: var(--color-secondary); }
.player-3 .player-token { background: var(--color-warning); }
.player-4 .player-token { background: var(--color-danger); }

.player-name {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-weight: 500;
}

.edit-name-btn {
  background: none;
  border: none;
  color: var(--color-text-light);
  cursor: pointer;
  padding: var(--space-xs);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  transition: all var(--transition-base);
}

.edit-name-btn:hover {
  color: var(--color-primary);
  background-color: var(--color-surface-alt);
}

.name-input {
  background-color: var(--color-surface);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--font-size-sm);
  width: 150px;
}

.name-input:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.player-stats {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* ===========================
   MODALS
   =========================== */
dialog.modal {
  width: min(600px, 90vw);
  max-height: 85vh;
  overflow-y: auto;
  border: none;
  border-radius: var(--radius-xl);
  padding: 0;
  background-color: var(--color-surface);
  box-shadow: var(--shadow-xl);
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  margin: 0;
}

dialog::backdrop {
  background-color: rgba(0, 0, 0, 0.5);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
}

.modal header {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-surface-alt);
}

.modal header h4 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin: 0;
}

.modal .content {
  padding: var(--space-lg);
}

.modal footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-lg);
  border-top: 1px solid var(--color-border);
  background-color: var(--color-surface-alt);
}

/* Question Styles */
.dice-info {
  background-color: rgba(59, 130, 246, 0.1);
  border-left: 4px solid var(--color-primary);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  white-space: pre-line;
}

.choices {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin: var(--space-lg) 0;
}

.choice {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-md);
  background-color: var(--color-surface-alt);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
}

.choice:hover {
  background-color: var(--color-surface);
  border-color: var(--color-border-hover);
  transform: translateX(4px);
}

.choice input[type="radio"] {
  margin-top: 2px;
  cursor: pointer;
}

.choice.correct {
  border-color: var(--color-secondary);
  background-color: rgba(16, 185, 129, 0.1);
}

.choice.wrong {
  border-color: var(--color-danger);
  background-color: rgba(239, 68, 68, 0.1);
}

.explain {
  padding: var(--space-md);
  background-color: var(--color-surface-alt);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  margin-top: var(--space-md);
  white-space: pre-line; /* Preserve line breaks in text */
}

.explain.position-feedback {
  color: var(--color-danger); /* Red color for position feedback */
}

/* Player Selection Modal */
.player-selection {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.player-btn {
  appearance: none;
  background-color: var(--color-surface-alt);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
}

.player-btn:hover {
  border-color: var(--color-primary);
  background-color: rgba(59, 130, 246, 0.05);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.player-btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.player-count {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-primary);
}

.player-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  font-weight: 500;
}

/* Footer */
.footer {
  text-align: center;
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
  padding: var(--space-md);
  margin-top: var(--space-md);
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  background-color: var(--color-surface-alt);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
}

.pill code {
  font-family: 'Courier New', monospace;
  font-weight: 600;
  color: var(--color-primary);
}