/* ============================================================
   BANNER + SIDEBAR
   ============================================================ */

/* Banner */
.banner {
  background-size: 100% auto;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
  padding: 80px 0;
}

.banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    rgba(0, 0, 0, 0.55) 0%,
    rgba(0, 0, 0, 0.2) 60%,
    rgba(0, 0, 0, 0.05) 100%
  );
}

.banner__inner {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.banner__title {
  font-size: 42px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 1px;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  margin-bottom: 8px;
}

.banner__breadcrumb {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  padding: 0 4px;
  letter-spacing: 1px;
}

/* Main Layout */
.main-layout {
  display: flex;
  max-width: 1200px;
  margin: 24px auto;
  padding: 0 24px;
  gap: 24px;
  min-height: 60vh;
}

/* Sidebar */
.sidebar {
  width: 220px;
  flex-shrink: 0;
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  align-self: flex-start;
  position: sticky;
  top: 165px;
  overflow: hidden;
}

.sidebar__title {
  background: #fafbfc;
  color: var(--color-text);
  font-size: 17px;
  padding: 16px 20px;
  letter-spacing: 2px;
  font-weight: 700;
  border-bottom: 1px solid #eee;
  display: flex;
  align-items: center;
  gap: 10px;
}

.sidebar__title::before {
  content: "";
  width: 4px;
  height: 20px;
  background: var(--color-primary);
  border-radius: 2px;
  flex-shrink: 0;
}

.sidebar__menu {
  padding: 8px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sidebar__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  font-size: 14px;
  color: #333;
  cursor: pointer;
  transition: all 0.2s ease;
  border-radius: var(--radius-sm);
  background: transparent;
}

.sidebar__item a {
  flex: 1;
  padding: 12px 0;
  color: inherit;
  font-weight: inherit;
  display: flex;
  align-items: center;
}

.sidebar__item::after {
  content: "\203A";
  color: #bbb;
  font-size: 18px;
  font-weight: 400;
  transition: color 0.2s ease;
  flex-shrink: 0;
  line-height: 1;
}

.sidebar__item:hover:not(.sidebar__item--active) {
  background: var(--color-primary-lighter);
  color: var(--color-primary);
}

.sidebar__item:hover:not(.sidebar__item--active)::after {
  color: var(--color-primary);
}

.sidebar__item--active {
  background: var(--color-primary-dark);
  color: #fff;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}

.sidebar__item--active::after {
  color: #fff;
  transition: transform 0.2s ease;
}

.sidebar__item--active:hover {
  background: #155230;
}

.sidebar__item--active:hover::after {
  transform: translateX(3px);
}

/* 响应式 */
@media (max-width: 900px) {
  .main-layout {
    flex-direction: column;
    padding: 0 16px;
    margin: 16px auto;
    gap: 16px;
  }
  .sidebar {
    width: 100%;
    position: static;
  }
  .sidebar__menu {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    padding: 8px;
  }
  .sidebar__item {
    padding: 0 16px;
    font-size: 13px;
    border-radius: 4px;
    border: 1px solid var(--color-border);
    background: transparent;
    gap: 6px;
  }
  .sidebar__item a {
    padding: 8px 0;
  }
  .sidebar__item::after {
    font-size: 14px;
  }
  .sidebar__item--active {
    border-color: var(--color-primary-dark);
    background: var(--color-primary-dark);
    color: var(--color-white);
  }
  .sidebar__item--active::after {
    color: #fff;
  }
}