/* Universe - 채팅 시스템 스타일 */

/* 채팅 버튼 */
.chat-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--glass-bg);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition-normal);
  margin-right: var(--space-sm);
  user-select: none;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.chat-button:hover {
  background: var(--card-bg);
  border-color: var(--text-accent);
  box-shadow: var(--shadow-md);
}

.chat-button.active {
  background: var(--card-bg);
  border-color: var(--text-accent);
}

/* 읽지 않은 메시지 배지 - 버튼 기준으로 절대 위치 */
.chat-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  border-radius: 10px;
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  color: white;
  font-size: 11px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(239, 68, 68, 0.4);
  animation: pulse 2s ease-in-out infinite;
  pointer-events: none;
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
}

/* 채팅 드롭다운 - 화면 우측 상단 고정 */
.chat-dropdown {
  position: fixed;
  top: 70px;
  right: 1rem;
  width: 360px;
  max-width: calc(100vw - 2rem);
  max-height: calc(100vh - 90px);
  background: var(--card-bg);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-10px);
  transition: all var(--transition-normal);
  z-index: 1001;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.chat-button.active .chat-dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

/* 드롭다운 헤더 */
.chat-dropdown-header {
  padding: var(--space-md);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.chat-dropdown-title {
  font-weight: 600;
  color: var(--text-primary);
  font-size: var(--font-lg);
}

/* 채팅 목록 */
.chat-list {
  flex: 1;
  overflow-y: auto;
  min-height: 0;
}

.chat-list::-webkit-scrollbar {
  width: 6px;
}

.chat-list::-webkit-scrollbar-track {
  background: rgba(255,255,255,0.05);
}

.chat-list::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.2);
  border-radius: 3px;
}

.chat-list::-webkit-scrollbar-thumb:hover {
  background: rgba(255,255,255,0.3);
}

/* 채팅 아이템 */
.chat-item {
  padding: var(--space-md);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  cursor: pointer;
  transition: var(--transition-fast);
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}

.chat-item:hover {
  background: rgba(255,255,255,0.05);
}

.chat-item:last-child {
  border-bottom: none;
}

/* 아바타 */
.chat-avatar {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  position: relative;
}

.chat-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

.chat-avatar.has-unread::after {
  content: '';
  position: absolute;
  top: -2px;
  right: -2px;
  width: 12px;
  height: 12px;
  background: #ef4444;
  border: 2px solid var(--card-bg);
  border-radius: 50%;
  z-index: 2;
}

/* 온라인 상태 표시 (프로필 오른쪽 아래) */
.chat-avatar .online-status {
  position: absolute;
  bottom: -2px;
  right: -2px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid var(--card-bg);
  z-index: 1;
}

.chat-avatar .online-status.online {
  background: #22c55e; /* 초록색 */
}

.chat-avatar .online-status.offline {
  background: #6b7280; /* 회색 */
}

/* 채팅 정보 */
.chat-info {
  flex: 1;
  min-width: 0;
}

.chat-name-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}

.chat-name {
  font-weight: 600;
  color: var(--text-primary);
  font-size: var(--font-md);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

/* 온라인/오프라인 상태 텍스트 */
.chat-name .status-text {
  font-size: 11px;
  font-weight: 400;
  color: var(--text-secondary);
  margin-left: var(--space-xs);
}

.chat-time {
  font-size: var(--font-xs);
  color: var(--text-secondary);
  flex-shrink: 0;
}

.chat-message-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.chat-last-message {
  font-size: var(--font-sm);
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}

.chat-unread-count {
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  border-radius: 10px;
  background: var(--primary-gradient);
  color: white;
  font-size: 11px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-left: var(--space-xs);
}

/* 빈 상태 */
.chat-empty {
  padding: var(--space-xxl) var(--space-md);
  text-align: center;
  color: var(--text-secondary);
}

.chat-empty-icon {
  font-size: 48px;
  margin-bottom: var(--space-md);
  opacity: 0.5;
}

/* 새 채팅 버튼 */
.chat-new-button {
  padding: var(--space-md);
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  gap: var(--space-sm);
  align-items: center;
  justify-content: center;
  color: var(--text-accent);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
}

.chat-new-button:hover {
  background: rgba(100, 255, 218, 0.1);
}

/* 채팅 모달 */
.chat-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1100;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.chat-modal.active {
  opacity: 1;
  visibility: visible;
}

.chat-modal-content {
  width: 90%;
  max-width: 400px;
  background: var(--card-bg);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  transform: scale(0.9);
  transition: transform var(--transition-normal);
}

.chat-modal.active .chat-modal-content {
  transform: scale(1);
}

.chat-modal-header {
  padding: var(--space-lg);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.chat-modal-title {
  font-size: var(--font-xl);
  font-weight: 700;
  color: var(--text-primary);
}

.chat-modal-close {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 24px;
}

.chat-modal-close:hover {
  background: rgba(255,255,255,0.1);
  color: var(--text-primary);
}

.chat-modal-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-md);
}

/* 친구 목록 */
.friend-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.friend-item {
  padding: var(--space-md);
  border-radius: var(--radius-md);
  display: flex;
  gap: var(--space-md);
  align-items: center;
  cursor: pointer;
  transition: var(--transition-fast);
}

.friend-item:hover {
  background: rgba(255,255,255,0.05);
}

.friend-avatar {
  width: 40px;
  height: 40px;
  position: relative;
}

.friend-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

.friend-name {
  font-weight: 500;
  color: var(--text-primary);
}

/* 채팅방 */
.chatroom-container {
  position: fixed;
  bottom: 0;
  right: 20px;
  width: 360px;
  height: 500px;
  background: var(--card-bg);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  z-index: 1050;
  opacity: 0;
  visibility: hidden;
  transform: translateY(100%);
  transition: all var(--transition-normal);

  /* 화면 밖으로 나가지 않도록 제한 */
  max-width: calc(100vw - 2rem);
  max-height: calc(100vh - 2rem);
}

.chatroom-container.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.chatroom-header {
  padding: var(--space-md);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: move;
}

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

.chatroom-user-avatar {
  width: 36px;
  height: 36px;
  position: relative;
}

.chatroom-user-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

.chatroom-user-name {
  font-weight: 600;
  color: var(--text-primary);
}

.chatroom-controls {
  display: flex;
  gap: var(--space-xs);
}

.chatroom-control-btn {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
  background: transparent;
  border: none;
  color: var(--text-secondary);
}

.chatroom-control-btn:hover {
  background: rgba(255,255,255,0.1);
  color: var(--text-primary);
}

.chatroom-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.chatroom-messages::-webkit-scrollbar {
  width: 6px;
}

.chatroom-messages::-webkit-scrollbar-track {
  background: rgba(255,255,255,0.05);
}

.chatroom-messages::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.2);
  border-radius: 3px;
}

/* 메시지 */
.message {
  display: flex;
  gap: var(--space-sm);
  max-width: 80%;
  margin-bottom: var(--space-xs);
}

.message.no-time {
  margin-bottom: 2px;
}

.message.sent {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.message.received {
  align-self: flex-start;
}

.message-bubble {
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  word-wrap: break-word;
  font-size: var(--font-sm);
}

.message.sent .message-bubble {
  background: var(--primary-gradient);
  color: white;
  border-bottom-right-radius: 4px;
}

.message.received .message-bubble {
  background: rgba(255,255,255,0.1);
  color: var(--text-primary);
  border-bottom-left-radius: 4px;
}

.message-time {
  font-size: var(--font-xs);
  color: var(--text-secondary);
  align-self: flex-end;
  margin: 0 var(--space-xs);
  white-space: nowrap;
}

.message-read-status {
  font-size: var(--font-xs);
  align-self: flex-end;
  margin: 0 var(--space-xs);
  white-space: nowrap;
}

.message-read-status.read {
  color: var(--text-accent);
}

.message-read-status.unread {
  color: var(--text-secondary);
  opacity: 0.7;
}

/* 입력 영역 */
.chatroom-input-area {
  padding: var(--space-md);
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  gap: var(--space-sm);
}

.chatroom-input {
  flex: 1;
  padding: var(--space-sm) var(--space-md);
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--font-sm);
  resize: none;
  min-height: 40px;
  max-height: 100px;
  font-family: inherit;
}

.chatroom-input:focus {
  outline: none;
  border-color: var(--text-accent);
  background: rgba(255,255,255,0.08);
}

.chatroom-send-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--primary-gradient);
  border: none;
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
  flex-shrink: 0;
}

.chatroom-send-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.chatroom-send-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* 반응형 */
/* 태블릿 이하 */
@media (max-width: 1024px) {
  .chatroom-container {
    width: min(380px, calc(100vw - 2rem));
    right: 1rem;
    height: 500px;
    max-height: calc(100vh - 120px);
  }
}

/* 모바일 */
@media (max-width: 768px) {
  .chatroom-container {
    width: calc(100vw - 2rem);
    max-width: none;
    height: 70vh;
    max-height: 600px;
    right: 1rem;
    left: auto;
    bottom: 1rem;
  }

  .chat-modal-content {
    width: calc(100vw - 2rem);
    max-width: none;
    max-height: 85vh;
  }
}

/* 작은 모바일 */
@media (max-width: 480px) {
  .chatroom-container {
    width: calc(100vw - 1rem);
    height: 75vh;
    max-height: 550px;
    right: 0.5rem;
    left: auto;
  }

  .chatroom-header {
    padding: var(--space-sm) var(--space-md);
  }

  .chatroom-messages {
    padding: var(--space-sm);
  }

  .chatroom-input-area {
    padding: var(--space-sm);
  }

  .message-bubble {
    max-width: 85%;
    padding: var(--space-sm);
  }

  .chat-modal-content {
    width: calc(100vw - 1rem);
  }
}