/* ================================================================
   PMP 十五至尊图 — 布局样式（顶栏 / 面包屑 / 响应式）
   ================================================================ */

/* ---- Topbar ---- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  gap: 16px;
  flex-wrap: wrap;
}
.topbar-left { display: flex; align-items: center; gap: 12px; }
.logo { font-size: 1.2rem; font-weight: 700; white-space: nowrap; }
.badge {
  font-size: .75rem;
  background: var(--color-primary-bg);
  color: var(--color-primary);
  padding: 2px 10px;
  border-radius: 20px;
  font-weight: 500;
  white-space: nowrap;
}
.topbar-right { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.topbar-nav { display: flex; gap: 6px; }

.search-input {
  width: 260px;
  padding: 7px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: .9rem;
  outline: none;
  transition: var(--transition);
}
.search-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.1);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 7px 16px; border-radius: var(--radius);
  font-size: .85rem; font-weight: 500; cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-outline {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}
.btn-outline:hover { background: var(--color-bg); }
.btn-primary {
  background: var(--color-primary);
  border: 1px solid var(--color-primary);
  color: #fff;
}
.btn-primary:hover { background: #1d4ed8; }
.btn-sm { padding: 5px 10px; font-size: .8rem; }
.btn-xs { padding: 3px 8px; font-size: .72rem; }
.icon { font-size: 1.1rem; }

/* ---- Breadcrumb ---- */
.breadcrumb-bar {
  padding: 8px 24px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 56px;
  z-index: 99;
}
.breadcrumb-bar.hidden { display: none; }
.breadcrumb-bar ol {
  list-style: none;
  display: flex;
  gap: 4px;
  font-size: .8rem;
}
.breadcrumb-bar li { color: var(--color-text-muted); }
.breadcrumb-bar li a {
  color: var(--color-primary);
  text-decoration: none;
}
.breadcrumb-bar li a:hover { text-decoration: underline; }
.breadcrumb-bar li + li::before {
  content: " / ";
  margin: 0 4px;
  color: var(--color-border);
}

/* ---- Back nav ---- */
.back-nav {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--color-primary);
  font-size: .85rem;
  cursor: pointer;
  margin-bottom: 16px;
  font-weight: 500;
}
.back-nav:hover { text-decoration: underline; }

/* ---- Main content wrapper ---- */
.main-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px;
  min-height: calc(100vh - 120px);
}