/* =====================================================
   multiplayer.css — Styles cho chế độ Multiplayer
   Bóng Ma | Boss Arena Co-op
====================================================== */

/* --- Screen MP Main --- */
#screen-multiplayer,
#screen-mp-lobby {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 10, 0.92);
  backdrop-filter: blur(12px);
  z-index: 20;
}

#screen-multiplayer.hidden,
#screen-mp-lobby.hidden {
  display: none;
}

/* --- Panel MP --- */
.mp-panel {
  background: linear-gradient(135deg, rgba(0, 10, 30, 0.98) 0%, rgba(5, 0, 20, 0.98) 100%);
  border: 1px solid rgba(0, 255, 204, 0.3);
  border-radius: 18px;
  padding: 28px 32px;
  max-width: 480px;
  width: 100%;
  box-shadow: 0 0 40px rgba(0, 255, 204, 0.15), inset 0 0 60px rgba(0, 255, 204, 0.03);
  position: relative;
}

.mp-panel::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, transparent, #00ffcc, transparent);
  border-radius: 50%;
}

.mp-title {
  font-family: 'Segoe UI', sans-serif;
  font-size: 26px;
  font-weight: 900;
  letter-spacing: 3px;
  color: #00ffcc;
  text-shadow: 0 0 20px #00ffcc, 0 0 40px rgba(0, 255, 204, 0.4);
  text-align: center;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.mp-subtitle {
  text-align: center;
  color: #557;
  font-size: 13px;
  margin-bottom: 28px;
  letter-spacing: 1px;
}

/* --- IP + Code Input --- */
.mp-input-group {
  margin-bottom: 16px;
}

.mp-input-label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  color: #557799;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.mp-input {
  width: 100%;
  padding: 12px 16px;
  background: rgba(0, 255, 204, 0.05);
  border: 1px solid rgba(0, 255, 204, 0.25);
  border-radius: 10px;
  color: #e0fff8;
  font-size: 16px;
  font-family: 'Courier New', monospace;
  letter-spacing: 2px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  box-sizing: border-box;
}

.mp-input:focus {
  border-color: #00ffcc;
  box-shadow: 0 0 12px rgba(0, 255, 204, 0.25);
}

.mp-input::placeholder {
  color: #334;
  letter-spacing: 1px;
}

/* --- Buttons --- */
.mp-btn {
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  margin-bottom: 10px;
}

.mp-btn:active {
  transform: scale(0.97);
}

.mp-btn-primary {
  background: linear-gradient(135deg, #00cc99, #0099cc);
  color: #000;
  box-shadow: 0 0 20px rgba(0, 255, 204, 0.3);
}

.mp-btn-primary:hover {
  box-shadow: 0 0 30px rgba(0, 255, 204, 0.6);
  transform: translateY(-1px);
}

.mp-btn-secondary {
  background: linear-gradient(135deg, #ff4477, #cc0044);
  color: #fff;
  box-shadow: 0 0 20px rgba(255, 68, 119, 0.3);
}

.mp-btn-secondary:hover {
  box-shadow: 0 0 30px rgba(255, 68, 119, 0.6);
  transform: translateY(-1px);
}

.mp-btn-back {
  background: rgba(255, 255, 255, 0.05);
  color: #668;
  border: 1px solid rgba(255,255,255,0.08);
}

.mp-btn-back:hover {
  background: rgba(255,255,255,0.09);
  color: #99aacc;
}

.mp-error {
  color: #ff4477;
  font-size: 13px;
  text-align: center;
  min-height: 18px;
  margin-bottom: 10px;
  font-weight: 600;
}

/* --- Divider --- */
.mp-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 16px 0;
}
.mp-divider::before,
.mp-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: rgba(0, 255, 204, 0.12);
}
.mp-divider span {
  color: #446;
  font-size: 12px;
  letter-spacing: 2px;
}

/* =====================================================
   LOBBY SCREEN
====================================================== */
.mp-lobby-panel {
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  overflow-x: hidden;
}

/* Room code display */
.mp-room-code-display {
  text-align: center;
  margin-bottom: 14px;
  padding: 10px 16px;
  background: rgba(0, 255, 204, 0.05);
  border: 1px solid rgba(0, 255, 204, 0.2);
  border-radius: 12px;
}

.mp-room-code-label {
  font-size: 11px;
  letter-spacing: 3px;
  color: #557;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.mp-room-code-value {
  font-size: 28px;
  font-weight: 900;
  font-family: 'Courier New', monospace;
  letter-spacing: 8px;
  color: #00ffcc;
  text-shadow: 0 0 20px #00ffcc, 0 0 40px rgba(0,255,204,0.4);
  animation: mp-code-pulse 2s ease-in-out infinite;
}

@keyframes mp-code-pulse {
  0%, 100% { text-shadow: 0 0 20px #00ffcc; }
  50% { text-shadow: 0 0 40px #00ffcc, 0 0 80px rgba(0,255,204,0.5); }
}

.mp-room-code-hint {
  font-size: 12px;
  color: #446;
  margin-top: 6px;
}

/* Players list in lobby */
.mp-players-list {
  list-style: none;
  padding: 0;
  margin: 0 0 12px;
}

.mp-player-slot {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 10px;
  margin-bottom: 6px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  transition: border-color 0.25s;
  animation: mp-slot-in 0.3s ease;
}

@keyframes mp-slot-in {
  from { opacity: 0; transform: translateX(-10px); }
  to   { opacity: 1; transform: translateX(0); }
}

.mp-player-slot.is-host {
  border-color: rgba(0, 255, 204, 0.3);
  background: rgba(0, 255, 204, 0.04);
}

.mp-player-slot.empty-slot {
  opacity: 0.35;
  border-style: dashed;
}

.mp-player-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(0, 255, 204, 0.15);
  border: 2px solid rgba(0,255,204,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.mp-player-name {
  font-weight: 700;
  color: #e0fff8;
  font-size: 14px;
}

.mp-player-host-badge {
  font-size: 11px;
  color: #00ffcc;
  letter-spacing: 1px;
}

.mp-player-you-badge {
  font-size: 11px;
  color: #ffcc00;
  font-weight: 800;
}

.mp-waiting-text {
  text-align: center;
  color: #557;
  font-size: 13px;
  letter-spacing: 1px;
  padding: 10px 0;
  animation: mp-blink 1.4s ease-in-out infinite;
}

@keyframes mp-blink {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

/* Boss selector in lobby (host only) */
.mp-boss-select-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 18px;
  max-height: 200px;
  overflow-y: auto;
  padding-right: 4px;
}

.mp-boss-card {
  padding: 12px;
  border-radius: 12px;
  background: rgba(255,255,255,0.03);
  border: 1.5px solid rgba(255,255,255,0.08);
  cursor: pointer;
  text-align: center;
  transition: all 0.18s;
}

.mp-boss-card:hover {
  background: rgba(255,255,255,0.07);
  transform: translateY(-2px);
}

.mp-boss-card.selected {
  border-color: #00ffcc;
  background: rgba(0, 255, 204, 0.08);
  box-shadow: 0 0 16px rgba(0,255,204,0.25);
}

.mp-boss-card-icon {
  font-size: 28px;
  margin-bottom: 4px;
}

.mp-boss-card-name {
  font-size: 12px;
  font-weight: 700;
  color: #e0fff8;
}

.mp-boss-card-hp {
  font-size: 10px;
  color: #668;
  margin-top: 3px;
}

/* --- Player list separator --- */
.mp-section-title {
  font-size: 11px;
  letter-spacing: 2px;
  color: #557;
  text-transform: uppercase;
  margin-bottom: 10px;
}

/* Scrollbar for boss grid */
.mp-boss-select-grid::-webkit-scrollbar {
  width: 4px;
}
.mp-boss-select-grid::-webkit-scrollbar-track {
  background: transparent;
}
.mp-boss-select-grid::-webkit-scrollbar-thumb {
  background: rgba(0,255,204,0.2);
  border-radius: 4px;
}

/* --- Character Select Grid (Lobby) --- */
.mp-char-select-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  max-height: 120px;
  overflow-y: auto;
  margin-bottom: 14px;
}

.mp-char-card {
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  padding: 6px 10px;
  cursor: pointer;
  transition: all 0.15s ease;
  background: rgba(255,255,255,0.03);
  min-width: 80px;
  text-align: center;
}

.mp-char-card:hover {
  border-color: var(--char-color, #aaa);
  background: rgba(255,255,255,0.07);
}

.mp-char-card.selected {
  border-color: var(--char-color, #aaa);
  background: rgba(255,255,255,0.12);
  box-shadow: 0 0 8px var(--char-color, #aaa);
}

.mp-char-card-name {
  font-size: 12px;
  font-weight: 700;
}

/* --- Ready Button --- */
#btn-mp-ready {
  width: 100%;
  margin-top: 8px;
  background: rgba(0, 80, 60, 0.4);
  border-color: rgba(0, 255, 150, 0.4);
  color: #00ffaa;
}

#btn-mp-ready.ready-active {
  background: rgba(0, 180, 100, 0.3);
  border-color: #00ff88;
  color: #00ff88;
  box-shadow: 0 0 12px rgba(0, 255, 136, 0.4);
}

.mp-lobby-panel::-webkit-scrollbar { width: 4px; }
.mp-lobby-panel::-webkit-scrollbar-track { background: transparent; }
.mp-lobby-panel::-webkit-scrollbar-thumb { background: rgba(0,255,204,0.2); border-radius: 4px; }