:root {
  --accent: #4f8cff;
  --green: #3fb950;
  --yellow: #d29922;
  --orange: #e67e22;
  --red: #f85149;
  --up: #4f8cff;
  --down: #3fb950;
}
[data-theme="dark"] {
  --bg: #0b0e14;
  --bg2: #0d1117;
  --card: #151a23;
  --card-hover: #1b212c;
  --border: #232a36;
  --text: #e6e9ef;
  --muted: #8a93a3;
  --shadow: 0 8px 30px rgba(0,0,0,.45);
  /* 有背景图时顶栏用：渐隐遮罩 + 文字阴影，暗色主题压暗背景以衬托浅色文字 */
  --topbar-scrim: linear-gradient(to bottom, rgba(0,0,0,.52), rgba(0,0,0,.12));
  --topbar-text-shadow: 0 1px 1px rgba(0,0,0,.98), 0 0 3px rgba(0,0,0,.94), 0 0 9px rgba(0,0,0,.76);
  /* 有背景图时的全局文字可读性：深色外缘衬托浅色文字，不依赖卡片毛玻璃。 */
  --content-primary-text: #f4f8ff;
  --content-text-outline: rgba(3,8,16,.88);
  --content-text-shadow: 0 1px 1px rgba(0,0,0,.96), 0 0 4px rgba(0,0,0,.86), 0 0 12px rgba(0,0,0,.58);
  /* 次级小字需要比正文更强的边缘，避免被背景高光或细节吞没。 */
  --content-secondary-text: #f1f5fb;
  --content-secondary-outline: rgba(3,8,16,.96);
  --content-secondary-shadow: 0 1px 1px rgba(0,0,0,.98), 0 0 3px rgba(0,0,0,.94), 0 0 8px rgba(0,0,0,.76);
  --content-badge-bg: rgba(3,8,16,.76);
  --content-badge-border: rgba(241,245,251,.64);
  --content-bar-track: rgba(3,8,16,.76);
  --content-bar-border: rgba(232,240,252,.42);
  --content-subtle-border: rgba(232,240,252,.44);
  /* 实时上/下行保留蓝绿语义，但用更亮的字色与独立深色轮廓对抗复杂背景。 */
  --content-live-up: #8cc8ff;
  --content-live-down: #78e7a1;
  --content-live-outline: rgba(2,8,16,.98);
  --content-live-shadow: 0 1px 1px rgba(0,0,0,.99), 0 0 3px rgba(0,0,0,.96), 0 0 8px rgba(0,0,0,.82);
  --content-card-border: rgba(222,230,245,.43);
  --content-card-shadow: 0 5px 22px rgba(0,0,0,.34);
  --content-card-hover-shadow: 0 10px 30px rgba(0,0,0,.52);
}
[data-theme="light"] {
  --bg: #f4f6fa;
  --bg2: #eaeef5;
  --card: #ffffff;
  --card-hover: #ffffff;
  --border: #e2e7ef;
  --text: #1b2330;
  --muted: #6b7585;
  --shadow: 0 8px 30px rgba(20,40,80,.10);
  /* 背景图下即使切换亮色主题，前景也保持“浅字 + 深色边缘”：亮暗区域都稳定可读。 */
  --topbar-scrim: linear-gradient(to bottom, rgba(3,12,27,.28), rgba(3,12,27,.07));
  --topbar-text-shadow: 0 1px 1px rgba(0,0,0,.98), 0 0 3px rgba(0,0,0,.94), 0 0 9px rgba(0,0,0,.76);
  --content-primary-text: #f7fbff;
  --content-text-outline: rgba(2,10,22,.96);
  --content-text-shadow: 0 1px 1px rgba(0,0,0,.98), 0 0 4px rgba(0,0,0,.9), 0 0 12px rgba(0,0,0,.68);
  /* 次级小字也采用浅字深缘，避免白描边在瀑布、高光等区域消失。 */
  --content-secondary-text: #f1f6ff;
  --content-secondary-outline: rgba(2,10,22,.98);
  --content-secondary-shadow: 0 1px 1px rgba(0,0,0,.99), 0 0 3px rgba(0,0,0,.95), 0 0 8px rgba(0,0,0,.8);
  --content-badge-bg: rgba(2,10,22,.78);
  --content-badge-border: rgba(241,246,255,.66);
  --content-bar-track: rgba(2,10,22,.74);
  --content-bar-border: rgba(241,246,255,.56);
  --content-subtle-border: rgba(2,10,22,.55);
  /* 亮色主题在背景图下同样用高亮蓝绿与深色轮廓，避免速率数字被高光吞没。 */
  --content-live-up: #8cc8ff;
  --content-live-down: #78e7a1;
  --content-live-outline: rgba(2,10,22,.99);
  --content-live-shadow: 0 1px 1px rgba(0,0,0,.99), 0 0 3px rgba(0,0,0,.96), 0 0 8px rgba(0,0,0,.84);
  --content-card-border: rgba(28,43,67,.32);
  --content-card-shadow: 0 5px 22px rgba(20,40,80,.18);
  --content-card-hover-shadow: 0 10px 30px rgba(20,40,80,.32);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  min-height: 100vh;
  transition: background .25s, color .25s;
}

/* 页面美化：全站背景图层（由 appearance.js 注入并填充） */
html.has-bg body { background: transparent; }
/* inset 由 appearance.js 按模糊量动态设置：不模糊时为 0（图片不被多余放大，最清晰），
   模糊时才撑出溢出边遮住模糊产生的透明边缘 */
#bg-layer {
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background-position: center; background-size: cover; background-repeat: no-repeat;
}
#bg-dim { position: fixed; inset: 0; z-index: -1; pointer-events: none; }

/* 顶栏 */
.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 26px;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
/* 有背景图时：顶栏不再使用磨砂，靠渐隐遮罩 + 高对比文字保证清晰。 */
html.has-bg .topbar {
  background: transparent;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
  border-bottom-color: color-mix(in srgb, var(--border) 45%, transparent);
}
html.has-bg .topbar::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: var(--topbar-scrim);
}
html.has-bg .brand,
html.has-bg .stats,
html.has-bg .stat-num {
  /* 顶栏是图片高光最集中的区域，两个主题统一使用高亮前景与更厚的深色边缘。 */
  color: var(--content-primary-text);
  -webkit-text-stroke: .55px var(--content-text-outline);
  paint-order: stroke fill;
  text-shadow: var(--topbar-text-shadow);
}

.brand { font-size: 18px; font-weight: 700; display: flex; align-items: center; gap: 10px; letter-spacing: .5px; }
.brand-home { color: inherit; text-decoration: none; cursor: pointer; }
.brand-home:hover { color: var(--accent); }
.brand-home:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; border-radius: 4px; }
.logo-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--green); box-shadow: 0 0 10px var(--green); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { opacity: 1 } 50% { opacity: .4 } }
.topbar-right { display: flex; align-items: center; gap: 16px; }
.stats { display: flex; gap: 18px; font-size: 13px; color: var(--muted); }
.stat-num { color: var(--text); font-weight: 700; font-size: 15px; }
.stat.up { color: var(--up); } .stat.down { color: var(--down); }
.icon-btn {
  background: var(--card); border: 1px solid var(--border); color: var(--text);
  width: 36px; height: 36px; border-radius: 9px; cursor: pointer; font-size: 16px;
  transition: background .15s, border-color .15s;
}
.icon-btn:hover { background: var(--card-hover); border-color: var(--accent); }
a.icon-btn { display: inline-flex; align-items: center; justify-content: center; text-decoration: none; }

/* 设置页 */
.settings-page { max-width: 760px; margin: 26px auto; padding: 0 26px 40px; }

/* 设置子页标签 */
.tabs { display: flex; gap: 8px; margin-bottom: 18px; border-bottom: 1px solid var(--border); }
.tab {
  background: none; border: none; color: var(--muted); cursor: pointer;
  font-size: 14px; padding: 10px 4px; margin-bottom: -1px;
  border-bottom: 2px solid transparent; transition: color .15s, border-color .15s;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--text); font-weight: 600; border-bottom-color: var(--accent); }
.tab + .tab { margin-left: 14px; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* 滑块字段（页面美化用） */
.slider-field { margin-bottom: 16px; }
.slider-field .slabel { display: flex; justify-content: space-between; font-size: 12px; color: var(--muted); margin-bottom: 8px; }
.slider-field .slabel .sval { color: var(--text); font-variant-numeric: tabular-nums; }
.slider-field input[type=range] { width: 100%; accent-color: var(--accent); cursor: pointer; }
.upload-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.bg-thumb {
  width: 100%; height: 150px; border: 1px solid var(--border); border-radius: 12px;
  background-position: center; background-size: cover; background-repeat: no-repeat;
  margin-bottom: 14px; background-color: var(--bg2);
}
.panel { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 20px 22px; margin-bottom: 18px; }
.panel-title { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
.panel-desc { font-size: 12px; color: var(--muted); line-height: 1.7; margin-bottom: 14px; }
.panel-desc a { color: var(--accent); }
.field { display: flex; flex-direction: column; gap: 6px; font-size: 12px; color: var(--muted); margin-bottom: 14px; }
.field input, .field select {
  background: var(--bg2); border: 1px solid var(--border); color: var(--text);
  border-radius: 8px; padding: 9px 11px; font-size: 13px; width: 100%;
}
.field input:focus, .field select:focus { outline: none; border-color: var(--accent); }
.field-row { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text); margin-bottom: 14px; cursor: pointer; }
.field-row input { width: 18px; height: 18px; accent-color: var(--accent); }
.btn-ghost { background: var(--card); border: 1px solid var(--border); color: var(--text); border-radius: 9px; padding: 10px 18px; font-size: 14px; cursor: pointer; transition: border-color .15s; }
.btn-ghost:hover { border-color: var(--accent); }

/* 卡片网格 */
.grid {
  max-width: 1480px; margin: 22px auto; padding: 0 26px;
  display: grid; gap: 16px;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
}
.card {
  /* --grid-alpha 控制卡片背景不透明度（页面美化里可调）；默认 100% 等同纯色 */
  background: color-mix(in srgb, var(--card) var(--grid-alpha, 100%), transparent);
  border: 1px solid var(--border);
  border-radius: 16px; padding: 18px; cursor: pointer;
  transition: background .15s, transform .15s, border-color .15s, box-shadow .15s;
}
.card:hover { background: color-mix(in srgb, var(--card-hover) var(--grid-alpha, 100%), transparent); transform: translateY(-3px); box-shadow: var(--shadow); border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); }
.card.offline { opacity: .5; }
/* 背景图保持原图清晰，前景文字改用描边 + 多层投影取得稳定对比度。
   这是全局前景处理，不使用 backdrop-filter 或额外的卡片局部磨砂层。 */
html.has-bg .card,
html.has-bg .empty,
html.has-bg .foot {
  color: var(--content-primary-text);
  -webkit-text-stroke: .35px var(--content-text-outline);
  paint-order: stroke fill;
  text-shadow: var(--content-text-shadow);
}
html.has-bg .card {
  border-color: var(--content-card-border);
  box-shadow: var(--content-card-shadow);
}
html.has-bg .card:hover {
  border-color: color-mix(in srgb, var(--accent) 70%, var(--content-card-border));
  box-shadow: var(--content-card-hover-shadow);
}
/* 离线状态仍有明显弱化，但避免低透明度与背景图叠加后文字难辨。 */
html.has-bg .card.offline { opacity: .72; }
/* 背景图下的进度组件独立使用深色轨道与细边缘，避免亮色主题的浅轨道融进图片高光。 */
html.has-bg .card .bar {
  background: var(--content-bar-track);
  box-shadow: inset 0 0 0 1px var(--content-bar-border);
}
html.has-bg .card .quota { border-top-color: var(--content-subtle-border); }
html.has-bg .card .quota-mark {
  background: var(--content-primary-text);
  box-shadow: 0 0 2px var(--content-text-outline);
  opacity: .82;
}
html.has-bg .card .quota-mark.over { background: var(--red); opacity: 1; }
/* 12px 左右的辅助信息最容易被复杂背景吞没；单独提高亮度与文字边缘强度。
   这是文字级的对比度处理，不为内容新增背景面板或模糊层。 */
html.has-bg .card .meta,
html.has-bg .card .metric-top .label,
html.has-bg .card .quota-top .label,
html.has-bg .card .net .tot,
html.has-bg .foot {
  color: var(--content-secondary-text);
  font-weight: 600;
  -webkit-text-stroke: .55px var(--content-secondary-outline);
  paint-order: stroke fill;
  text-shadow: var(--content-secondary-shadow);
}
/* 平台徽章改成紧凑的实色标签，只隔离自身文字，不影响服务器卡片与背景图。 */
html.has-bg .card .badge {
  color: var(--content-secondary-text);
  font-weight: 650;
  background: var(--content-badge-bg);
  border-color: var(--content-badge-border);
  -webkit-text-stroke: .45px var(--content-secondary-outline);
  paint-order: stroke fill;
  text-shadow: var(--content-secondary-shadow);
}
html.has-bg .card .badge.weight {
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 62%, var(--content-badge-border));
}
/* 实时速率数字在顶栏和卡片内都使用同一组高亮蓝绿轮廓，避免细小彩色文字融入背景。 */
html.has-bg .stat.up,
html.has-bg .net .up {
  color: var(--content-live-up);
  font-weight: 700;
  letter-spacing: .01em;
  -webkit-text-stroke: .6px var(--content-live-outline);
  paint-order: stroke fill;
  text-shadow: var(--content-live-shadow);
}
html.has-bg .stat.down,
html.has-bg .net .down {
  color: var(--content-live-down);
  font-weight: 700;
  letter-spacing: .01em;
  -webkit-text-stroke: .6px var(--content-live-outline);
  paint-order: stroke fill;
  text-shadow: var(--content-live-shadow);
}
.card-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.name { font-size: 16px; font-weight: 650; display: flex; align-items: center; gap: 8px; }
.status { width: 9px; height: 9px; border-radius: 50%; flex: none; }
.status.on { background: var(--green); box-shadow: 0 0 8px var(--green); }
.status.off { background: var(--red); }
.badges { display: flex; align-items: center; gap: 6px; }
.badge { font-size: 11px; color: var(--muted); border: 1px solid var(--border); border-radius: 6px; padding: 2px 8px; white-space: nowrap; }
.badge.weight { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); font-variant-numeric: tabular-nums; }
.meta { font-size: 12px; color: var(--muted); margin-bottom: 14px; line-height: 1.7; }
.meta-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; line-height: 1.5; }
.meta-runtime { margin-left: auto; text-align: right; white-space: nowrap; }

.metric { margin-bottom: 11px; }
.metric-top { display: flex; justify-content: space-between; font-size: 13px; margin-bottom: 5px; }
.metric-top .label { color: var(--muted); }
.metric-top .val { font-variant-numeric: tabular-nums; }
.bar { position: relative; height: 8px; background: var(--bg2); border-radius: 5px; overflow: hidden; }
.bar > span { display: block; height: 100%; border-radius: 5px; transition: width .5s ease, background .5s; }
/* 流量进度条上的"合理用量"刻度竖线 */
.quota-mark { position: absolute; top: 0; height: 100%; width: 2px; margin-left: -1px; background: var(--text); opacity: .55; pointer-events: none; }
.quota-mark.over { background: var(--red); opacity: 1; }

.net { display: flex; gap: 18px; font-size: 13px; margin-top: 6px; flex-wrap: wrap; }
.net div { display: flex; align-items: center; gap: 5px; font-variant-numeric: tabular-nums; }
.net .up { color: var(--up); } .net .down { color: var(--down); }
.net .tot { color: var(--muted); }

/* 卡片底部流量配额进度条 */
.quota { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--border); }
.quota-top { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; font-size: 12px; margin-bottom: 5px; }
.quota-top .label { color: var(--muted); }
.quota-top .val { font-variant-numeric: tabular-nums; white-space: nowrap; }

.empty { grid-column: 1/-1; text-align: center; color: var(--muted); padding: 90px 0; font-size: 15px; }

.foot { max-width: 1480px; margin: 26px auto; padding: 0 26px 30px; text-align: center; color: var(--muted); font-size: 12px; }

/* 详情抽屉 */
.drawer-mask {
  position: fixed; inset: 0; background: rgba(0,0,0,.5);
  opacity: 0; pointer-events: none; transition: opacity .25s; z-index: 20;
}
.drawer-mask.show { opacity: 1; pointer-events: auto; }
.drawer {
  position: fixed; top: 0; right: 0; height: 100%; width: 560px; max-width: 92vw;
  background: var(--bg); border-left: 1px solid var(--border);
  transform: translateX(100%); transition: transform .28s cubic-bezier(.2,.7,.3,1);
  z-index: 21; display: flex; flex-direction: column; box-shadow: var(--shadow);
}
.drawer.show { transform: translateX(0); }
.drawer-head { display: flex; align-items: flex-start; justify-content: space-between; padding: 20px 22px; border-bottom: 1px solid var(--border); }
.drawer-actions { display: flex; gap: 8px; flex: none; }
.icon-btn.danger:hover { border-color: var(--red); color: var(--red); }
.drawer-title { font-size: 18px; font-weight: 700; }
.drawer-sub { font-size: 12px; color: var(--muted); margin-top: 5px; line-height: 1.6; }
.drawer-body { padding: 18px 22px 30px; overflow-y: auto; }

/* 抽屉内设置区 */
.settings { margin-bottom: 18px; border: 1px solid var(--border); border-radius: 12px; background: var(--card); }
.settings summary { cursor: pointer; padding: 12px 14px; font-size: 14px; font-weight: 600; color: var(--text); user-select: none; list-style: none; }
.settings summary::-webkit-details-marker { display: none; }
.settings summary::before { content: '▸ '; color: var(--muted); }
.settings[open] summary::before { content: '▾ '; }
.settings[open] summary { border-bottom: 1px solid var(--border); }
.set-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; padding: 14px; }
.set-grid label { display: flex; flex-direction: column; gap: 6px; font-size: 12px; color: var(--muted); }
.set-grid input, .set-grid select {
  background: var(--bg2); border: 1px solid var(--border); color: var(--text);
  border-radius: 8px; padding: 8px 10px; font-size: 13px; width: 100%;
}
.set-grid input:focus, .set-grid select:focus { outline: none; border-color: var(--accent); }
.set-actions { display: flex; align-items: center; gap: 12px; padding: 0 14px 14px; }
.set-msg { font-size: 12px; color: var(--green); }
.set-msg.err { color: var(--red); }
.set-cal { border-top: 1px dashed var(--border); margin-top: 4px; }
.set-cal-title { padding: 12px 14px 0; font-size: 13px; font-weight: 600; color: var(--text); }
.set-hint { padding: 0 14px 14px; font-size: 12px; color: var(--muted); line-height: 1.5; }

.ranges { display: flex; gap: 8px; margin-bottom: 16px; }
.range-btn {
  background: var(--card); border: 1px solid var(--border); color: var(--muted);
  padding: 6px 14px; border-radius: 8px; font-size: 13px; cursor: pointer;
  transition: all .15s;
}
.range-btn:hover { color: var(--text); border-color: var(--accent); }
.range-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }

.kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 20px; }
.kpi { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 12px; }
.kpi .k { font-size: 11px; color: var(--muted); }
.kpi .v { font-size: 18px; font-weight: 700; margin-top: 4px; font-variant-numeric: tabular-nums; }

.chart-block { margin-bottom: 22px; }
.chart-block h3 { font-size: 13px; font-weight: 600; color: var(--muted); margin-bottom: 8px; display: flex; justify-content: space-between; }
.chart-block canvas { width: 100%; height: 140px; display: block; background: var(--card); border: 1px solid var(--border); border-radius: 12px; }

/* 添加服务器弹窗 */
.modal-mask {
  position: fixed; inset: 0; background: rgba(0,0,0,.5);
  opacity: 0; pointer-events: none; transition: opacity .2s; z-index: 30;
}
.modal-mask.show { opacity: 1; pointer-events: auto; }
.modal {
  position: fixed; top: 50%; left: 50%; transform: translate(-50%, -46%);
  width: 680px; max-width: 92vw; background: var(--bg); color: var(--text);
  border: 1px solid var(--border); border-radius: 16px; box-shadow: var(--shadow);
  opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s; z-index: 31;
}
.modal.show { opacity: 1; pointer-events: auto; transform: translate(-50%, -50%); }
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 18px 22px; border-bottom: 1px solid var(--border); }
.modal-title { font-size: 17px; font-weight: 700; }
.modal-body { padding: 20px 22px 24px; }
.modal-tip { font-size: 13px; color: var(--muted); line-height: 1.7; margin-bottom: 12px; }
.modal-tip b { color: var(--text); }
.cmd-box {
  background: var(--bg2); border: 1px solid var(--border); border-radius: 10px;
  padding: 14px 16px; margin-bottom: 14px; max-height: 200px; overflow: auto;
}
.cmd-box code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 13px; line-height: 1.6; color: var(--text); white-space: pre-wrap; word-break: break-all;
}
.btn-primary {
  background: var(--accent); color: #fff; border: none; border-radius: 9px;
  padding: 10px 18px; font-size: 14px; cursor: pointer; transition: opacity .15s;
}
.btn-primary:hover { opacity: .88; }
.btn-primary:disabled { opacity: .5; cursor: default; }
.modal-note { font-size: 12px; color: var(--muted); margin-top: 12px; line-height: 1.7; }
.modal-note.warn { color: var(--yellow); }

@media (max-width: 560px) {
  .stats { display: none; }
  .grid { grid-template-columns: 1fr; padding: 0 14px; }
}
@media (max-width: 460px) {
  .meta-row { align-items: flex-start; flex-direction: column; gap: 2px; }
  .meta-runtime { margin-left: 0; text-align: left; white-space: normal; }
}