/* ===== AI 사이드바 ===== */
:root {
  --ai-sidebar-width: 300px;
}

/* 사이드바가 열릴 때 메인 콘텐츠 영역 축소 */
.main-wrapper {
  transition: margin-right 0.25s ease;
}

.main-wrapper.ai-open {
  margin-right: var(--ai-sidebar-width);
}

/* ===== AI 사이드바 패널 ===== */
.ai-sidebar {
  position: fixed;
  top: 0;
  right: 0;
  width: var(--ai-sidebar-width);
  height: 100vh;
  background: var(--color-surface);
  border-left: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  transform: translateX(100%);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.ai-sidebar.open {
  transform: translateX(0);
  box-shadow: -4px 0 20px rgba(0, 0, 0, 0.08);
}

/* ===== 사이드바 헤더 ===== */
.ai-sidebar-header {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 18px;
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.ai-sidebar-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.ai-sidebar-title::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-success);
  display: inline-block;
  flex-shrink: 0;
}

.ai-sidebar-close {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-3);
  font-size: 0.85rem;
  transition: background var(--transition), color var(--transition);
}

.ai-sidebar-close:hover {
  background: var(--color-surface-2);
  color: var(--color-text);
}

/* ===== 메시지 영역 ===== */
.ai-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  scroll-behavior: smooth;
}

.ai-messages::-webkit-scrollbar { width: 3px; }
.ai-messages::-webkit-scrollbar-track { background: transparent; }
.ai-messages::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 2px; }

.msg {
  max-width: 90%;
  padding: 9px 13px;
  border-radius: var(--radius-md);
  font-size: 0.83rem;
  line-height: 1.6;
  word-break: break-word;
}

.msg-ai {
  background: var(--color-surface-2);
  color: var(--color-text);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}

.msg-user {
  background: var(--color-primary);
  color: #fff;
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}

/* 타이핑 인디케이터 */
.msg-typing {
  display: flex;
  gap: 4px;
  align-items: center;
  padding: 12px 14px;
  background: var(--color-surface-2);
  align-self: flex-start;
  border-radius: var(--radius-md);
  border-bottom-left-radius: 4px;
}

.msg-typing span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-text-3);
  animation: typing 1.2s infinite;
}

.msg-typing span:nth-child(2) { animation-delay: 0.2s; }
.msg-typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
  0%, 60%, 100% { opacity: 0.3; transform: translateY(0); }
  30% { opacity: 1; transform: translateY(-3px); }
}

/* ===== 입력 영역 ===== */
.ai-input-area {
  padding: 12px 14px;
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: 8px;
  align-items: flex-end;
  flex-shrink: 0;
  background: var(--color-surface);
}

.ai-input {
  flex: 1;
  resize: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 8px 11px;
  font-size: 0.83rem;
  line-height: 1.5;
  background: var(--color-bg);
  color: var(--color-text);
  max-height: 96px;
  outline: none;
  transition: border-color var(--transition);
}

.ai-input:focus { border-color: var(--color-primary); }
.ai-input::placeholder { color: var(--color-text-3); }

.ai-send-btn {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 0.85rem;
  transition: background var(--transition), opacity var(--transition);
}

.ai-send-btn:hover   { background: var(--color-primary-dark); }
.ai-send-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ===== 헤더 토글 버튼 ===== */
.ai-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  border: 1.5px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-2);
  transition: all var(--transition);
}

.ai-toggle-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.ai-toggle-btn.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.ai-toggle-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-success);
}