:root{
  --app-bg: #061427;
  --app-surface: rgba(13,54,107,0.22);
  --app-surface-2: rgba(13,54,107,0.32);
  --app-border: rgba(63,140,255,0.28);
  --app-text: #d7e3ff;
  --app-muted: rgba(215,227,255,0.75);
  --app-accent: #1a73e8;
  --app-good: #2ecc71;
  --app-warn: #f59e0b;
  --app-bad: #ef4444;
  --app-shadow: 0 10px 30px rgba(0,0,0,0.25);
}

.app-header{
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  padding: 10px 14px;
  background: linear-gradient(180deg, rgba(6,20,39,0.92), rgba(6,20,39,0.55));
  border-bottom: 1px solid rgba(63,140,255,0.22);
  backdrop-filter: blur(10px);
}

.app-header__inner{
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.app-brand{
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 220px;
}

.app-brand__title{
  font-weight: 700;
  letter-spacing: .2px;
  font-size: 14px;
  color: var(--app-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 280px;
}

.app-nav{
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: center;
}

.app-nav a{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 10px;
  text-decoration: none;
  color: var(--app-muted);
  border: 1px solid transparent;
  background: transparent;
  font-size: 13px;
  line-height: 1;
}

.app-nav a:hover{
  color: var(--app-text);
  border-color: rgba(63,140,255,0.22);
  background: rgba(13,54,107,0.18);
}

.app-nav a.active{
  color: var(--app-text);
  border-color: rgba(63,140,255,0.35);
  background: rgba(13,54,107,0.28);
}

.app-status{
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  min-width: 280px;
}

.app-pill{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid rgba(63,140,255,0.22);
  background: rgba(13,54,107,0.18);
  color: var(--app-muted);
  font-size: 12px;
  white-space: nowrap;
}

.app-dot{
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: rgba(239,68,68,0.95);
  box-shadow: 0 0 10px rgba(239,68,68,0.55);
}
.app-dot.good{ background: rgba(46,204,113,0.95); box-shadow: 0 0 10px rgba(46,204,113,0.55); }
.app-dot.warn{ background: rgba(245,158,11,0.95); box-shadow: 0 0 10px rgba(245,158,11,0.55); }

.app-btn{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(26,115,232,0.85);
  color: #fff;
  cursor: pointer;
  font-size: 12px;
  line-height: 1;
}
.app-btn.secondary{
  background: rgba(13,54,107,0.55);
}
.app-btn:disabled{
  opacity: .6;
  cursor: not-allowed;
}

/* 给页面内容留出空间（由 shared.js 统一加 padding） */
.app-has-header body{
  padding-top: 56px;
}

@media (max-width: 860px){
  .app-brand{ min-width: auto; }
  .app-status{ min-width: auto; }
  .app-brand__title{ max-width: 180px; }
}