@import url('https://fonts.googleapis.com/css2?family=Fredoka+One&family=Nunito:wght@400;600;700;800&display=swap');

:root {
  --bg:       #0D0E1A;
  --surface:  #161728;
  --surface2: #1E2035;
  --border:   #2A2D4A;
  --text:     #E8EAFF;
  --text-dim: #7B7FA8;

  --x:        #FF4757;
  --circle:   #2ED7F8;
  --triangle: #2ECC71;
  --square:   #FFD32A;

  --glow-x:        0 0 18px #FF475766;
  --glow-circle:   0 0 18px #2ED7F866;
  --glow-triangle: 0 0 18px #2ECC7166;
  --glow-square:   0 0 18px #FFD32A66;

  --cell: 48px;
}

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

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: 'Nunito', sans-serif;
  font-size: 16px;
  overflow-x: hidden;
  transition: background 0.6s ease;
}

h1, h2, h3, .display { font-family: 'Fredoka One', sans-serif; }

.screen {
  display: none;
  min-height: 100vh;
  width: 100%;
}
.screen.active { display: flex; flex-direction: column; align-items: center; justify-content: center; }

#home-screen {
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, #1a1b3a 0%, transparent 70%),
    var(--bg);
  gap: 2rem;
  padding: 2rem;
}

.logo { text-align: center; }
.logo h1 {
  font-size: clamp(2.5rem, 8vw, 5rem);
  letter-spacing: 0.03em;
  line-height: 1;
  background: linear-gradient(135deg, var(--x) 0%, var(--circle) 40%, var(--triangle) 70%, var(--square) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 30px rgba(255,71,87,0.3));
}
.logo p {
  color: var(--text-dim);
  font-size: 1rem;
  margin-top: 0.5rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.mode-cards {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  justify-content: center;
  max-width: 700px;
}

.mode-card {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 20px;
  padding: 2rem 2.5rem;
  cursor: pointer;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
  text-align: center;
  min-width: 200px;
  flex: 1;
}
@media (hover: hover) {
  .mode-card:hover {
    transform: translateY(-4px);
    border-color: var(--circle);
    box-shadow: 0 8px 32px rgba(46,215,248,0.15);
  }
}
.mode-card svg { display: block; margin: 0 auto 1rem; }
.mode-card h2 { font-size: 1.4rem; margin-bottom: 0.5rem; }
.mode-card p { font-size: 0.875rem; color: var(--text-dim); font-weight: 600; }

.panel {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 20px;
  padding: 2rem;
  width: 100%;
  max-width: 420px;
}
.panel h2 { font-size: 1.8rem; margin-bottom: 1.5rem; text-align: center; }

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1rem;
}
.form-group label {
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
}

input[type="text"], input[type="number"] {
  background: var(--surface2);
  border: 2px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  font-family: 'Nunito', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  padding: 0.75rem 1rem;
  outline: none;
  transition: border-color 0.2s;
  width: 100%;
}
input[type="text"]:focus, input[type="number"]:focus { border-color: var(--circle); }
input[type="text"].code-input {
  font-family: 'Fredoka One', sans-serif;
  font-size: 1.8rem;
  text-align: center;
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--border);
  outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--circle);
  cursor: pointer;
  box-shadow: 0 0 10px rgba(46,215,248,0.4);
}

.btn {
  border: none;
  border-radius: 14px;
  cursor: pointer;
  font-family: 'Fredoka One', sans-serif;
  font-size: 1.1rem;
  letter-spacing: 0.05em;
  padding: 0.85rem 1.5rem;
  transition: transform 0.15s, box-shadow 0.15s, opacity 0.2s;
  width: 100%;
  outline: none;
}
@media (hover: hover) {
  .btn:hover { transform: translateY(-2px); }
  .btn:active { transform: translateY(0); }
}
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }

.btn-primary {
  background: linear-gradient(135deg, var(--circle), #1a9ab8);
  color: #000;
  box-shadow: 0 4px 20px rgba(46,215,248,0.3);
}
@media (hover: hover) {
  .btn-primary:hover { box-shadow: 0 6px 28px rgba(46,215,248,0.45); }
}

.btn-accent {
  background: linear-gradient(135deg, var(--triangle), #1d9e56);
  color: #000;
  box-shadow: 0 4px 20px rgba(46,204,113,0.3);
}

.btn-danger {
  background: linear-gradient(135deg, var(--x), #c0392b);
  color: #fff;
  box-shadow: 0 4px 20px rgba(255,71,87,0.3);
}

.btn-ghost {
  background: transparent;
  border: 2px solid var(--border);
  color: var(--text-dim);
}
@media (hover: hover) {
  .btn-ghost:hover { border-color: var(--text-dim); color: var(--text); }
}

.btn-sm {
  font-size: 0.9rem;
  padding: 0.6rem 1rem;
  width: auto;
  border-radius: 10px;
}

.btn-row {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
}

#lobby-screen {
  padding: 2rem;
  gap: 1.5rem;
}

.room-code-display {
  text-align: center;
  background: var(--surface2);
  border: 2px solid var(--border);
  border-radius: 16px;
  padding: 1rem 2rem;
  margin-bottom: 1rem;
}
.room-code-display .label {
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.room-code-display .code {
  font-family: 'Fredoka One', sans-serif;
  font-size: 3rem;
  letter-spacing: 0.3em;
  background: linear-gradient(135deg, var(--circle), var(--triangle));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.player-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  width: 100%;
}

.player-slot {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--surface2);
  border: 2px solid var(--border);
  border-radius: 12px;
  padding: 0.75rem 1rem;
  transition: border-color 0.2s;
}
.player-slot.filled { border-color: var(--border); }
.player-slot.empty { opacity: 0.4; }
.player-slot .symbol-badge {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.player-slot .player-name { font-weight: 800; font-size: 1rem; }
.player-slot .player-role { font-size: 0.75rem; color: var(--text-dim); margin-left: auto; font-weight: 700; }

#game-screen {
  flex-direction: row;
  align-items: stretch;
  justify-content: center;
  padding: 0;
  gap: 0;
  min-height: 100vh;
}

.game-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  gap: 1rem;
  min-width: 0;
}

.turn-banner {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 50px;
  padding: 0.6rem 1.4rem;
  font-weight: 800;
  font-size: 1rem;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.turn-banner .turn-indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  animation: pulse 1.2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.7; }
}

.players-strip {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: center;
}
.player-chip {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 50px;
  padding: 0.4rem 0.9rem;
  font-size: 0.875rem;
  font-weight: 800;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.player-chip.active { border-color: currentColor; }
.player-chip .chip-symbol { width: 22px; height: 22px; }

/* ─── Dots & Boxes Board ──────────────────────────────────────────────────── */
.db-board {
  display: grid;
  background: transparent;
  width: min(85vw, 520px);
  aspect-ratio: 1;
  touch-action: manipulation;
}

.db-dot {
  display: flex;
  align-items: center;
  justify-content: center;
}
.db-dot::after {
  content: '';
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text-dim);
  box-shadow: 0 0 6px rgba(123,127,168,0.4);
}

.db-hline, .db-vline {
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  touch-action: manipulation;
}
.db-hline::after {
  content: '';
  display: block;
  width: 100%;
  height: 5px;
  border-radius: 3px;
  background: var(--surface2);
  transition: background 0.2s, box-shadow 0.2s;
}
@media (hover: hover) {
  .db-hline:not(.taken):hover::after { background: #2A2D4A; }
}
.db-hline.taken { cursor: default; }

.db-vline::after {
  content: '';
  display: block;
  width: 5px;
  height: 100%;
  border-radius: 3px;
  background: var(--surface2);
  transition: background 0.2s, box-shadow 0.2s;
}
@media (hover: hover) {
  .db-vline:not(.taken):hover::after { background: #2A2D4A; }
}
.db-vline.taken { cursor: default; }

.db-box {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.db-box-inner {
  width: 80%;
  height: 80%;
  border-radius: 4px;
  background: transparent;
  transition: background 0.3s, transform 0.3s;
}
.db-box.claimed .db-box-inner {
  transform: scale(1);
}

/* Line claimed colors */
.db-hline.claimed-X::after,
.db-vline.claimed-X::after { background: var(--x); box-shadow: 0 0 8px rgba(255,71,87,0.5); }
.db-hline.claimed-Circle::after,
.db-vline.claimed-Circle::after { background: var(--circle); box-shadow: 0 0 8px rgba(46,215,248,0.5); }
.db-hline.claimed-Triangle::after,
.db-vline.claimed-Triangle::after { background: var(--triangle); box-shadow: 0 0 8px rgba(46,204,113,0.5); }
.db-hline.claimed-Square::after,
.db-vline.claimed-Square::after { background: var(--square); box-shadow: 0 0 8px rgba(255,211,42,0.5); }

/* Box claimed fills */
.db-box.claimed-X .db-box-inner { background: rgba(255,71,87,0.3); }
.db-box.claimed-Circle .db-box-inner { background: rgba(46,215,248,0.3); }
.db-box.claimed-Triangle .db-box-inner { background: rgba(46,204,113,0.3); }
.db-box.claimed-Square .db-box-inner { background: rgba(255,211,42,0.3); }

/* ─── Chat ───────────────────────────────────────────────────────────────────── */
.chat-panel {
  width: 300px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border-left: 2px solid var(--border);
  height: 100vh;
  position: sticky;
  top: 0;
}
.chat-panel.hidden { display: none; }

.chat-header {
  padding: 1rem 1.25rem;
  border-bottom: 2px solid var(--border);
  font-family: 'Fredoka One', sans-serif;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  scroll-behavior: smooth;
}
.chat-messages::-webkit-scrollbar { width: 4px; }
.chat-messages::-webkit-scrollbar-track { background: transparent; }
.chat-messages::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.chat-msg {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  animation: slideIn 0.2s ease;
}
@keyframes slideIn {
  from { transform: translateX(8px); opacity: 0; }
  to   { transform: translateX(0);   opacity: 1; }
}
.chat-msg.system .msg-text {
  color: var(--text-dim);
  font-size: 0.78rem;
  font-weight: 700;
  font-style: italic;
  text-align: center;
  padding: 0.2rem 0;
}
.chat-msg .msg-sender {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.05em;
}
.chat-msg .msg-text {
  background: var(--surface2);
  border-radius: 0 10px 10px 10px;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.45rem 0.75rem;
  word-break: break-word;
}

.chat-input-area {
  border-top: 2px solid var(--border);
  display: flex;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
}
.chat-input-area input { flex: 1; padding: 0.6rem 0.85rem; font-size: 0.9rem; }
.chat-send-btn {
  background: var(--circle);
  border: none;
  border-radius: 10px;
  color: #000;
  cursor: pointer;
  padding: 0.6rem 0.85rem;
  transition: opacity 0.2s;
  flex-shrink: 0;
}
@media (hover: hover) { .chat-send-btn:hover { opacity: 0.85; } }

.chat-toggle-btn {
  display: none;
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  background: var(--circle);
  border: none;
  border-radius: 50%;
  color: #000;
  cursor: pointer;
  width: 52px;
  height: 52px;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(46,215,248,0.4);
  z-index: 100;
  transition: transform 0.2s;
}
@media (hover: hover) { .chat-toggle-btn:hover { transform: scale(1.1); } }

.chat-toggle-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.chat-badge {
  position: absolute;
  top: -6px;
  right: 0px;
  background: #FF4757;
  color: #fff;
  font-family: 'Nunito', sans-serif;
  font-size: 0.65rem;
  font-weight: 800;
  min-width: 18px;
  height: 18px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
  box-shadow: 0 0 8px rgba(255,71,87,0.6);
  pointer-events: none;
  transform: scale(0);
  transition: transform 0.2s cubic-bezier(0.34,1.56,0.64,1);
}
.chat-badge.show { transform: scale(1); }

.chat-drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 200;
  backdrop-filter: blur(4px);
}
.chat-drawer-overlay.open { display: block; }

.chat-drawer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60vh;
  background: var(--surface);
  border-radius: 20px 20px 0 0;
  border-top: 2px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 201;
  transform: translateY(100%);
  transition: transform 0.3s cubic-bezier(0.34,1.1,0.64,1);
}
.chat-drawer-overlay.open .chat-drawer { transform: translateY(0); }

/* ─── Win Overlay ────────────────────────────────────────────────────────────── */
.win-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 500;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(8px);
}
.win-overlay.active { display: flex; }

.win-card {
  text-align: center;
  animation: winPop 0.5s cubic-bezier(0.34,1.56,0.64,1) forwards;
  padding: 2rem;
}
@keyframes winPop {
  from { transform: scale(0.5) rotate(-10deg); opacity: 0; }
  to   { transform: scale(1) rotate(0deg);   opacity: 1; }
}
.win-card .win-title {
  font-size: clamp(3rem, 10vw, 6rem);
  line-height: 1;
  margin-bottom: 0.5rem;
}
.win-card .win-symbol { margin: 1rem auto; width: 100px; height: 100px; }
.win-card .win-subtitle { font-size: 1.3rem; color: var(--text-dim); margin-bottom: 2rem; font-weight: 700; }

#confetti-canvas {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 499;
}

.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--x);
  border-radius: 50px;
  color: #fff;
  font-weight: 800;
  padding: 0.75rem 1.5rem;
  transition: transform 0.3s;
  z-index: 600;
}
.toast.show { transform: translateX(-50%) translateY(0); }

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--border);
  border-top-color: var(--circle);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Grid size selector ───────────────────────────────────────────────────── */
.grid-size-display {
  text-align: center;
  font-size: 2rem;
  font-weight: 800;
  font-family: 'Fredoka One', sans-serif;
  background: var(--surface2);
  border: 2px solid var(--border);
  border-radius: 12px;
  padding: 0.5rem;
  margin-top: 0.5rem;
}

/* Score display */
.score-row {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
}
.score-chip {
  align-items: center;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 50px;
  display: flex;
  font-size: 0.85rem;
  font-weight: 800;
  gap: 0.4rem;
  padding: 0.3rem 0.8rem;
}
.score-chip .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* ─── Responsive ─────────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  #game-screen { flex-direction: column; justify-content: flex-start; padding-top: 0.5rem; }
  .chat-panel { display: none !important; }
  .chat-toggle-btn { display: flex; }

  .game-area { padding: 0.5rem; gap: 0.4rem; justify-content: flex-start; }

  .turn-banner { padding: 0.35rem 1rem; font-size: 0.85rem; gap: 0.5rem; }
  .turn-banner .turn-indicator { width: 10px; height: 10px; }

  .players-strip { gap: 0.4rem; }
  .player-chip { padding: 0.2rem 0.6rem; font-size: 0.75rem; gap: 0.3rem; }
  .player-chip .chip-symbol { width: 18px; height: 18px; }

  .db-board { width: min(94vw, calc(100vh - 140px)); }
  .chat-drawer { height: 50vh; }
}

@media (max-width: 480px) {
  .mode-cards { flex-direction: column; }
  .panel { padding: 1.5rem; }

  #home-screen { gap: 1.25rem; padding: 1rem; }
  .logo h1 { font-size: clamp(2rem, 10vw, 3rem); }
  .mode-card { padding: 1.25rem 1.5rem; min-width: 0; }

  .room-code-display { padding: 0.75rem 1rem; }
  .room-code-display .code { font-size: 1.5rem; letter-spacing: 0.15em; }

  .db-board { width: min(94vw, calc(100vh - 120px)); }
  .win-card .btn-row { flex-direction: column; align-items: center; }
  .win-card .btn-row .btn { min-width: 200px !important; }
  .chat-drawer { height: 45vh; }
}

/* ─── Player count selector ─────────────────────────────────────────────────── */
.count-select {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
}
.count-btn {
  background: var(--surface2);
  border: 2px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  cursor: pointer;
  font-family: 'Fredoka One', sans-serif;
  font-size: 1.4rem;
  padding: 0.6rem 1.1rem;
  transition: border-color 0.2s, background 0.2s;
}
.count-btn.selected {
  background: var(--surface);
  border-color: var(--circle);
  color: var(--circle);
}
@media (hover: hover) {
  .count-btn:hover {
    background: var(--surface);
    border-color: var(--circle);
    color: var(--circle);
  }
}