/* ============================================================
   Base — Mancala
   ============================================================ */

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

html, body {
  width: 100%; height: 100%;
  overflow: hidden;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: background 0.5s, color 0.3s;
}

#game-container {
  width: 100vw;
  height: 100vh;
  position: relative;
  background: var(--bg-table);
  background-image: var(--bg-image, none);
  background-size: cover;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ============================================================
   Header
   ============================================================ */

#header {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  z-index: 100;
  background: var(--bg-overlay);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

#header h1 {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

#header-right {
  display: flex;
  gap: 12px;
  align-items: center;
}

.header-btn {
  background: var(--btn-bg);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 14px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
}
.header-btn:hover { background: var(--btn-hover); transform: scale(1.03); }

#score-display {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.05em;
}

/* ============================================================
   Turn banner
   ============================================================ */

#turn-banner {
  position: absolute;
  top: 56px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 150;
  padding: 6px 24px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: #fff;
  background: var(--accent);
  border-radius: 20px;
  box-shadow: 0 2px 12px var(--accent-glow);
  animation: turn-pulse 0.4s ease-out;
  pointer-events: none;
}
#turn-banner.hidden { display: none; }

@keyframes turn-pulse {
  0%   { opacity: 0; transform: translateX(-50%) scale(0.8); }
  60%  { transform: translateX(-50%) scale(1.05); }
  100% { opacity: 1; transform: translateX(-50%) scale(1); }
}

/* ============================================================
   Toast notifications
   ============================================================ */

#toast-container {
  position: absolute;
  top: 56px;
  right: 16px;
  z-index: 600;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}
.toast {
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 500;
  color: #fff;
  background: rgba(51, 65, 85, 0.9);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  opacity: 0;
  transform: translateX(20px);
  transition: opacity 0.25s, transform 0.25s;
}
.toast.show { opacity: 1; transform: translateX(0); }
.toast-warn  { background: rgba(234, 179, 8, 0.85); color: #1c1917; }
.toast-error { background: rgba(239, 68, 68, 0.85); }

/* ============================================================
   Player info bars
   ============================================================ */

.player-info {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 20px;
  background: var(--panel-bg);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  border-radius: 12px;
  min-width: 300px;
  transition: box-shadow 0.3s, border-color 0.3s;
}

.player-info.top    { top: 56px; }
.player-info.bottom { bottom: 56px; }

.player-info.active {
  border-color: var(--accent);
  box-shadow: 0 0 18px var(--accent-glow);
}

.player-info-inner {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.player-name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-primary);
  letter-spacing: 0.04em;
}

.player-score-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
}

.active-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: transparent;
  border: 1.5px solid var(--border);
  transition: background 0.3s, border-color 0.3s;
  flex-shrink: 0;
}
.player-info.active .active-indicator {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}

/* ============================================================
   Status text
   ============================================================ */

#status-text {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 62;
  font-size: 0.78rem;
  color: var(--text-secondary);
  text-align: center;
  min-height: 1.2em;
  letter-spacing: 0.04em;
  pointer-events: none;
  white-space: nowrap;
}

/* ============================================================
   Message overlay
   ============================================================ */

#message-overlay {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  z-index: 200;
  text-align: center;
  pointer-events: none;
}
#message-overlay.hidden { display: none; }

#message-text {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  text-shadow: 0 2px 20px var(--accent-glow);
  letter-spacing: 0.06em;
}
#message-sub {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-top: 8px;
}

/* ============================================================
   Game over overlay
   ============================================================ */

#game-over-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.78);
  backdrop-filter: blur(8px);
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 24px;
}
#game-over-overlay.hidden { display: none; }

#game-over-title {
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--accent);
  text-shadow: 0 2px 30px var(--accent-glow);
}
#game-over-results {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 1.1rem;
  text-align: center;
}
.result-row {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: center;
}
.result-place { font-weight: 700; width: 30px; }
.result-name  { color: var(--text-primary); }
.result-score {
  font-variant-numeric: tabular-nums;
  color: var(--accent);
  font-weight: 600;
}

#game-over-actions {
  display: flex;
  gap: 12px;
  margin-top: 8px;
}

#new-game-btn {
  padding: 12px 36px;
  font-size: 1.1rem;
  font-weight: 600;
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 0.15s, filter 0.15s;
}
#new-game-btn:hover { transform: scale(1.05); filter: brightness(1.15); }

#back-menu-btn { padding: 12px 24px; font-size: 0.9rem; }

/* ============================================================
   Settings overlay
   ============================================================ */

#settings-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
}
#settings-overlay.hidden { display: none; }

#settings-panel {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  width: 400px;
  max-height: 90vh;
  overflow-y: auto;
}

#settings-panel h2 {
  font-size: 1.3rem;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.settings-section {
  margin-bottom: 20px;
}
.settings-section h3 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.theme-options,
.difficulty-options {
  display: flex;
  gap: 8px;
}

.theme-btn,
.diff-btn {
  flex: 1;
  padding: 10px;
  border-radius: 8px;
  border: 2px solid var(--border);
  background: var(--btn-bg);
  color: var(--text-primary);
  cursor: pointer;
  text-align: center;
  font-size: 0.82rem;
  font-weight: 500;
  transition: border-color 0.2s, background 0.2s;
}
.theme-btn.active,
.diff-btn.active  { border-color: var(--accent); background: var(--btn-hover); }
.theme-btn:hover,
.diff-btn:hover   { border-color: var(--text-secondary); }

/* Toggle switch */
.toggle-label {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 0.88rem;
  color: var(--text-primary);
  user-select: none;
}
.toggle-label input[type="checkbox"] { display: none; }
.toggle-slider {
  position: relative;
  width: 40px;
  height: 22px;
  background: var(--btn-bg);
  border: 1px solid var(--border);
  border-radius: 11px;
  transition: background 0.2s;
  flex-shrink: 0;
}
.toggle-slider::after {
  content: '';
  position: absolute;
  top: 3px; left: 3px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--text-secondary);
  transition: left 0.2s, background 0.2s;
}
.toggle-label input:checked + .toggle-slider {
  background: var(--accent);
  border-color: var(--accent);
}
.toggle-label input:checked + .toggle-slider::after {
  left: 21px;
  background: #000;
}

#settings-actions {
  display: flex;
  gap: 10px;
  margin-top: 24px;
}
#settings-actions button {
  flex: 1;
  padding: 10px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--border);
  transition: all 0.15s;
}
#save-settings {
  background: var(--accent);
  color: #000;
  border-color: var(--accent);
}
#cancel-settings {
  background: var(--btn-bg);
  color: var(--text-primary);
}
#cancel-settings:hover { background: var(--btn-hover); }

/* ============================================================
   Menu / Multiplayer screens — shared full-screen base
   ============================================================ */

#menu-overlay,
#ai-setup-overlay,
#create-overlay,
#join-overlay,
#lobby-overlay {
  position: absolute;
  inset: 0;
  background: var(--bg-primary);
  background-image: var(--bg-image, none);
  z-index: 350;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 20px;
  animation: screen-in 0.3s ease-out;
}
@keyframes screen-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

#menu-overlay.hidden,
#ai-setup-overlay.hidden,
#create-overlay.hidden,
#join-overlay.hidden,
#lobby-overlay.hidden { display: none; }

/* Menu decorative elements */
#menu-overlay { overflow: hidden; }

.menu-deco {
  position: absolute;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--panel-bg);
  border: 1px solid var(--border);
  opacity: 0.18;
}
.menu-deco.left  { top: 22%; left: 10%; transform: scale(1.4); }
.menu-deco.right { bottom: 20%; right: 10%; transform: scale(0.8); }

.menu-stone-deco {
  font-size: 2.4rem;
  color: var(--accent);
  opacity: 0.15;
  position: absolute;
  top: 15%;
  right: 20%;
  pointer-events: none;
  user-select: none;
}

#menu-overlay h1 {
  font-size: 3rem;
  font-weight: 200;
  letter-spacing: 0.28em;
  color: var(--accent);
  text-shadow: 0 2px 24px var(--accent-glow);
  text-align: center;
  text-transform: uppercase;
}

.menu-subtitle {
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--text-secondary);
  margin-top: -10px;
  letter-spacing: 0.12em;
  text-align: center;
}

.menu-lore {
  position: absolute;
  bottom: 20px;
  font-size: 0.7rem;
  color: var(--text-secondary);
  opacity: 0.6;
  letter-spacing: 0.1em;
  text-align: center;
  pointer-events: none;
  padding: 0 20px;
}

.menu-buttons {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 8px;
  align-items: center;
}

.menu-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  color: var(--text-secondary);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin: 2px 0;
}
.menu-divider::before,
.menu-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.menu-btn {
  padding: 14px 48px;
  font-size: 1.05rem;
  font-weight: 600;
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: transform 0.15s, filter 0.15s;
  min-width: 220px;
  text-align: center;
  letter-spacing: 0.04em;
}
.menu-btn:hover { transform: scale(1.05); filter: brightness(1.15); }

.menu-btn.secondary {
  background: var(--btn-bg);
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.menu-btn.secondary:hover { background: var(--btn-hover); filter: none; }

.menu-btn.outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.menu-btn.outline:hover { border-color: var(--accent); background: var(--btn-bg); filter: none; }
.menu-btn.hidden { display: none !important; }

/* AI setup & sub-screens headings */
#ai-setup-overlay h2,
#create-overlay h2,
#join-overlay h2 {
  font-size: 1.6rem;
  font-weight: 300;
  letter-spacing: 0.12em;
  color: var(--text-primary);
  margin-bottom: 4px;
}

/* Form groups */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 280px;
}
.form-group label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
}
.form-group input {
  background: var(--btn-bg);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}
.form-group input:focus { border-color: var(--accent); }

.form-actions {
  display: flex;
  gap: 12px;
  margin-top: 8px;
}

/* Room code input */
.room-code-input {
  text-transform: uppercase;
  letter-spacing: 0.3em;
  font-size: 1.5rem !important;
  text-align: center;
}

/* Join error text */
.join-error-text {
  color: #f87171;
  font-size: 0.85rem;
  min-height: 1.2em;
}

/* Room info block */
.room-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px 24px;
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  width: 280px;
}
.room-info.hidden { display: none; }

.room-code-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.room-code-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
}
.room-code-value {
  font-size: 2rem;
  font-weight: 700;
  font-family: 'Consolas', monospace;
  letter-spacing: 0.35em;
  color: var(--accent);
}

/* Copy button */
.copy-btn {
  padding: 4px 14px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--btn-bg);
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.15s;
}
.copy-btn:hover { border-color: var(--accent); }
.copy-btn.copied { background: #22c55e; color: #fff; border-color: #22c55e; }

/* Lobby */
#lobby-overlay h2 {
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--text-primary);
  letter-spacing: 0.08em;
}
#lobby-room-code {
  color: var(--accent);
  font-family: 'Consolas', monospace;
  letter-spacing: 0.25em;
  font-size: 1.5rem;
}

#lobby-copy-btn { margin-top: -12px; }

#lobby-share {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-top: -8px;
}

#lobby-players {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 300px;
  margin-top: 4px;
}
.lobby-player {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.lobby-player-name {
  font-weight: 600;
  font-size: 0.95rem;
}
.lobby-player-badge {
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: 10px;
  font-weight: 600;
  letter-spacing: 0.04em;
}
.lobby-player-badge.host    { background: var(--accent); color: #000; }
.lobby-player-badge.ready   { background: #22c55e; color: #fff; }
.lobby-player-badge.waiting { background: var(--badge-bg); color: var(--text-secondary); }

.lobby-slot-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border: 1px dashed var(--border);
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 0.85rem;
}

#lobby-status {
  font-size: 0.82rem;
  color: var(--text-secondary);
  min-height: 1.2em;
  text-align: center;
}

/* ============================================================
   Utility
   ============================================================ */
.hidden { display: none !important; }

/* ============================================================
   Mobile responsive
   ============================================================ */

@media (max-width: 768px) {
  html, body { overflow: auto; }

  #header { height: 42px; padding: 0 12px; }
  #header h1 { font-size: 0.8rem; letter-spacing: 0.12em; }
  .header-btn { padding: 4px 10px; font-size: 0.72rem; }

  #turn-banner { top: 48px; font-size: 0.75rem; padding: 4px 16px; }

  .player-info {
    min-width: 220px;
    padding: 6px 14px;
    border-radius: 8px;
  }
  .player-info.top    { top: 48px; }
  .player-info.bottom { bottom: 48px; }
  .player-name { font-size: 0.78rem; }

  #settings-panel { width: calc(100vw - 32px); max-width: 380px; padding: 20px; }

  #menu-overlay h1 { font-size: 2rem; letter-spacing: 0.2em; }
  .menu-subtitle { font-size: 0.75rem; }
  .menu-btn { padding: 12px 36px; font-size: 0.95rem; min-width: 180px; }
  .form-group { width: 240px; }
  #lobby-players { width: 260px; }
  #lobby-room-code { font-size: 1.2rem; }

  #game-over-title { font-size: 1.9rem; }
  #game-over-results { font-size: 0.95rem; }
  #new-game-btn { padding: 10px 28px; font-size: 1rem; }
  #message-text { font-size: 1.5rem; }
  #message-sub  { font-size: 0.85rem; }
}

@media (max-width: 480px) {
  #header h1 { font-size: 0.7rem; letter-spacing: 0.08em; }
  .player-info { min-width: 180px; padding: 5px 10px; }
  .menu-btn { padding: 10px 24px; font-size: 0.88rem; min-width: 160px; }
  #menu-overlay h1 { font-size: 1.5rem; }
  .form-group { width: 200px; }
  #settings-panel { padding: 16px; width: calc(100vw - 16px); }
  #game-over-title { font-size: 1.5rem; }
}