/* ================= 顶栏样式 ================= */
.topbar {
  position: relative;
  z-index: 10;
  flex: 0 0 auto;
  min-height: 68px;
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: 12px;
  padding: 12px 24px;
  background: rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--line);
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 800;
  white-space: nowrap;
  background: linear-gradient(135deg, #fff 0%, #c7d2fe 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.logo-icon {
  font-size: 32px;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3);
  transition: transform 0.3s, box-shadow 0.3s;
}

.logo-icon:hover {
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 6px 24px rgba(99, 102, 241, 0.4);
}

.logo-icon svg {
  width: 24px;
  height: 24px;
  stroke: #fff;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
}

.logo-subtitle {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  opacity: 0.7;
  background: linear-gradient(90deg, #06b6d4, #8b5cf6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 保存状态 */
.save-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.7);
  white-space: nowrap;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 24px;
  transition: .3s;
}
.save-status::before {
  content: '';
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 10px var(--ok);
  flex: 0 0 auto;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.9); }
}

.save-status.error { color: #fca5a5; background: rgba(239, 68, 68, 0.15); border-color: rgba(239, 68, 68, 0.3); }
.save-status.error::before { background: var(--danger); box-shadow: 0 0 10px var(--danger); }

/* 面包屑导航 */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  max-width: 400px;
  overflow-x: auto;
  white-space: nowrap;
}

.breadcrumb-items {
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.7);
  cursor: pointer;
  transition: .2s;
  padding: 2px 8px;
  border-radius: 6px;
}

.breadcrumb-item:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

.breadcrumb-item svg {
  width: 14px;
  height: 14px;
}

.breadcrumb-separator {
  color: rgba(255, 255, 255, 0.4);
  font-size: 16px;
}

/* 搜索框 */
.search {
  width: 220px;
  max-width: 34vw;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 450;
  font-family: inherit;
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  outline: none;
  transition: .25s;
}
.search::placeholder { color: rgba(255, 255, 255, 0.4); }
.search:focus {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-glow), 0 0 30px var(--primary-glow);
}

/* 工具按钮 */
.tool-btn {
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  line-height: 1;
  color: rgba(255, 255, 255, 0.7);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  cursor: pointer;
  transition: .25s;
}
.tool-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
  color: #fff;
}
.tool-btn:hover svg {
  animation: icon-bounce 0.4s ease-in-out;
}
.tool-btn.active {
  background: linear-gradient(135deg, var(--primary), var(--accent-2));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 4px 20px var(--primary-glow);
}
.tool-btn svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
  transition: transform 0.2s;
}
.tool-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* 用户信息 */
.user-info {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 10px 5px 6px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 24px;
  white-space: nowrap;
  flex-shrink: 0;
  transition: background 0.2s;
}

.user-info:hover {
  background: rgba(255, 255, 255, 0.13);
}

.user-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.35);
}

.user-name {
  font-size: 13px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
  max-width: 100px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-logout {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: 6px;
  color: rgba(255, 255, 255, 0.45);
  cursor: pointer;
  transition: color 0.2s, background 0.2s;
  flex-shrink: 0;
}

.user-logout:hover {
  color: #fca5a5;
  background: rgba(239, 68, 68, 0.15);
}

.user-logout svg {
  width: 15px;
  height: 15px;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
}