/* ============================================================
   IoT 设备管理平台 — Claude 深色暖调设计系统
   暖炭底 · 珊瑚橙强调 · 衬线标题
   ============================================================ */

:root {
  --bg-0: #1a1815;
  --bg-1: #221e19;
  --panel: rgba(176, 165, 150, 0.055);
  --panel-strong: rgba(176, 165, 150, 0.10);
  --border: rgba(176, 165, 150, 0.14);
  --border-strong: rgba(176, 165, 150, 0.26);
  --text-0: #f0eae0;
  --text-1: #b0a596;
  --text-2: #7d7264;
  --accent-a: #d97757;
  --accent-b: #e8956b;
  --accent-grad: linear-gradient(135deg, #d97757 0%, #e8956b 100%);
  --on-accent: #2b1a12;
  --ok: #55b685;
  --warn: #d9a03f;
  --err: #e5695e;
  --info: #8ba3c7;
  --recv: #6fb5a5;
  --send: #b48ec9;
  --radius: 16px;
  --radius-sm: 10px;
  --sidebar-w: 232px;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "STZhongsong", Georgia, "SimSun", serif;
  --font-sans: "Inter", "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei UI", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "Cascadia Mono", Consolas, "SF Mono", ui-monospace, "Microsoft YaHei", monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--text-0);
  background-color: var(--bg-0);
  background-image:
    radial-gradient(1100px 520px at -10% -12%, rgba(217, 119, 87, 0.09), transparent 60%),
    radial-gradient(900px 600px at 108% 8%, rgba(232, 149, 107, 0.08), transparent 62%),
    radial-gradient(720px 520px at 50% 118%, rgba(217, 119, 87, 0.06), transparent 60%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

/* 细网格背景层 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(176, 165, 150, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(176, 165, 150, 0.035) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(1200px 800px at 30% 0%, rgba(0,0,0,0.9), transparent 75%);
  z-index: 0;
}

::selection { background: rgba(217, 119, 87, 0.35); }

/* 滚动条 */
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: rgba(176, 165, 150, 0.22);
  border-radius: 8px;
  border: 2px solid transparent;
  background-clip: content-box;
}
::-webkit-scrollbar-thumb:hover { background-color: rgba(176, 165, 150, 0.38); }

/* ============ 布局骨架 ============ */

#app { position: relative; z-index: 1; }

.layout {
  display: flex;
  min-height: 100vh;
}

/* ---- 侧边栏 ---- */
.sidebar {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: var(--sidebar-w);
  display: flex;
  flex-direction: column;
  padding: 20px 14px;
  background: rgba(26, 23, 19, 0.72);
  border-right: 1px solid var(--border);
  backdrop-filter: blur(18px);
  z-index: 20;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 4px 8px 18px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 14px;
  text-decoration: none;
  color: inherit;
}
.brand:hover .brand-name { color: var(--accent-b); }

.brand-mark {
  width: 40px; height: 40px;
  flex: none;
  border-radius: 12px;
  background: var(--accent-grad);
  display: grid;
  place-items: center;
  color: var(--on-accent);
  box-shadow: 0 4px 18px rgba(217, 119, 87, 0.35);
}
.brand-mark svg { width: 22px; height: 22px; }

.brand-name {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.25;
}
.brand-sub {
  font-size: 11px;
  color: var(--text-2);
  margin-top: 2px;
}

.nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }

/* 返回门户首页的链接:贴在导航底部,与功能页用分隔线隔开 */
.nav-home {
  margin-top: auto;
  text-decoration: none;
  border-top: 1px solid var(--border);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  padding-top: 12px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  color: var(--text-1);
  font-size: 13.5px;
  cursor: pointer;
  user-select: none;
  background: transparent;
  width: 100%;
  text-align: left;
  font-family: inherit;
  position: relative;
  transition: color .18s ease, background .18s ease, border-color .18s ease;
}
.nav-item svg { width: 18px; height: 18px; flex: none; opacity: 0.85; }
.nav-item:hover { color: var(--text-0); background: var(--panel-strong); }
.nav-item.active {
  color: var(--text-0);
  background: linear-gradient(135deg, rgba(217, 119, 87, 0.15), rgba(232, 149, 107, 0.10));
  border-color: rgba(217, 119, 87, 0.30);
}
.nav-item.active::before {
  content: "";
  position: absolute;
  left: -14px; top: 9px; bottom: 9px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: var(--accent-grad);
}

.sidebar-foot {
  border-top: 1px solid var(--border);
  padding-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.conn-chip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  background: var(--panel);
  border: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-1);
}

/* ---- 主区域 ---- */
.main {
  flex: 1;
  margin-left: var(--sidebar-w);
  padding: 22px 26px 40px;
  min-width: 0;
  position: relative;
  z-index: 1;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}
.page-title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.page-desc { font-size: 12.5px; color: var(--text-2); margin-top: 3px; }
.topbar-right { display: flex; align-items: center; gap: 12px; }
.clock {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-1);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--panel);
}

/* ============ 卡片 ============ */

.card {
  background: linear-gradient(180deg, rgba(176, 165, 150, 0.075), rgba(176, 165, 150, 0.035));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  backdrop-filter: blur(10px);
  transition: border-color .2s ease, box-shadow .2s ease;
}
.card:hover { border-color: var(--border-strong); }

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}
.card-title {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 14.5px;
  font-weight: 600;
}
.card-title::before {
  content: "";
  width: 8px; height: 8px;
  border-radius: 3px;
  background: var(--accent-grad);
  box-shadow: 0 0 8px rgba(217, 119, 87, 0.6);
}
.card-title .plain { font-weight: 400; color: var(--text-2); font-size: 12px; }

.stack { display: flex; flex-direction: column; gap: 16px; }
.row { display: flex; gap: 16px; align-items: stretch; flex-wrap: wrap; }
.row > * { flex: 1; min-width: 300px; }

/* ============ 状态徽标 ============ */

.pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 500;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text-1);
  white-space: nowrap;
}
.pill .dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--text-2);
  flex: none;
}
.pill.online  { color: #9fdcb8; border-color: rgba(85, 182, 133, 0.35); background: rgba(85, 182, 133, 0.10); }
.pill.online .dot { background: var(--ok); box-shadow: 0 0 8px rgba(85, 182, 133, 0.9); animation: pulse 2s ease-in-out infinite; }
.pill.wait    { color: #ecd39c; border-color: rgba(217, 160, 63, 0.35); background: rgba(217, 160, 63, 0.10); }
.pill.wait .dot { background: var(--warn); animation: pulse 1s ease-in-out infinite; }
.pill.error   { color: #f0a49b; border-color: rgba(229, 105, 94, 0.40); background: rgba(229, 105, 94, 0.10); }
.pill.error .dot { background: var(--err); }
.pill.offline .dot,
.pill.idle .dot { background: var(--text-2); }
.pill.success { color: #9fdcb8; border-color: rgba(85, 182, 133, 0.35); background: rgba(85, 182, 133, 0.10); }
.pill.success .dot { background: var(--ok); }

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.8); }
}

/* ============ 表单 ============ */

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 12px;
}

.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.field > label {
  font-size: 11.5px;
  color: var(--text-2);
  letter-spacing: 0.04em;
}

input[type="text"], input[type="password"], input[type="number"], input[type="date"],
select, textarea {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-0);
  background: rgba(15, 13, 10, 0.55);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  outline: none;
  transition: border-color .16s ease, box-shadow .16s ease;
}
input:focus, select:focus, textarea:focus {
  border-color: rgba(217, 119, 87, 0.60);
  box-shadow: 0 0 0 3px rgba(217, 119, 87, 0.14);
}
input::placeholder, textarea::placeholder { color: var(--text-2); }
select option { background: #26221d; color: var(--text-0); }
textarea { resize: vertical; min-height: 74px; line-height: 1.55; }
input[type="date"]::-webkit-calendar-picker-indicator { filter: invert(0.7) sepia(0.2); }

/* 开关 */
.switch {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  cursor: pointer;
  font-size: 12.5px;
  color: var(--text-1);
  user-select: none;
  padding: 6px 0;
}
.switch input { display: none; }
.switch .track {
  width: 36px; height: 20px;
  border-radius: 999px;
  background: rgba(176, 165, 150, 0.22);
  position: relative;
  flex: none;
  transition: background .18s ease;
}
.switch .track::after {
  content: "";
  position: absolute;
  top: 3px; left: 3px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: #d6cbbc;
  transition: transform .18s ease, background .18s ease;
}
.switch input:checked + .track { background: var(--accent-grad); }
.switch input:checked + .track::after { transform: translateX(16px); background: #fff; }

/* ============ 按钮 ============ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 9px 18px;
  font-size: 13px;
  font-weight: 600;
  font-family: inherit;
  color: var(--text-0);
  background: var(--panel-strong);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
  transition: transform .12s ease, box-shadow .18s ease, background .18s ease, opacity .18s ease, border-color .18s ease;
}
.btn:hover:not(:disabled) { transform: translateY(-1px); border-color: rgba(176, 165, 150, 0.45); }
.btn:active:not(:disabled) { transform: translateY(0); }
.btn:disabled { opacity: 0.38; cursor: not-allowed; }

.btn-primary {
  background: var(--accent-grad);
  border: none;
  color: var(--on-accent);
  box-shadow: 0 4px 16px rgba(217, 119, 87, 0.28);
}
.btn-primary:hover:not(:disabled) { box-shadow: 0 6px 22px rgba(217, 119, 87, 0.42); }

.btn-danger {
  background: rgba(229, 105, 94, 0.12);
  border-color: rgba(229, 105, 94, 0.42);
  color: #f0a49b;
}
.btn-danger:hover:not(:disabled) { background: rgba(229, 105, 94, 0.2); border-color: rgba(229, 105, 94, 0.6); }

.btn-sm { padding: 6px 12px; font-size: 12px; }

.btn-row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

/* ============ 日志面板 ============ */

.log-panel {
  font-family: var(--font-mono);
  font-size: 12px;
  background: rgba(14, 12, 9, 0.62);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  height: 300px;
  overflow-y: auto;
  padding: 8px 0;
}
.log-panel.short { height: 210px; }
.log-panel.tall { height: 380px; }

.log-entry {
  display: flex;
  gap: 10px;
  padding: 5px 14px;
  line-height: 1.5;
  border-left: 2px solid transparent;
}
.log-entry:hover { background: rgba(176, 165, 150, 0.06); }
.log-entry .t { color: var(--text-2); flex: none; }
.log-entry .lv {
  flex: none;
  width: 52px;
  text-align: center;
  font-size: 10.5px;
  font-weight: 700;
  border-radius: 5px;
  padding: 1px 0;
  align-self: flex-start;
  margin-top: 1px;
  letter-spacing: 0.06em;
}
.log-entry .body { min-width: 0; flex: 1; word-break: break-all; }
.log-entry .body b { font-weight: 600; color: var(--text-0); }
.log-entry .body .detail { color: var(--text-1); }
.log-entry .body .meta { color: var(--text-2); font-size: 11px; }

.log-entry.info    { border-left-color: rgba(139, 163, 199, 0.5); }
.log-entry.info    .lv { color: #b3c5dd; background: rgba(139, 163, 199, 0.14); }
.log-entry.success { border-left-color: rgba(85, 182, 133, 0.5); }
.log-entry.success .lv { color: #9fdcb8; background: rgba(85, 182, 133, 0.13); }
.log-entry.warn    { border-left-color: rgba(217, 160, 63, 0.5); }
.log-entry.warn    .lv { color: #ecd39c; background: rgba(217, 160, 63, 0.13); }
.log-entry.error   { border-left-color: rgba(229, 105, 94, 0.6); }
.log-entry.error   .lv { color: #f0a49b; background: rgba(229, 105, 94, 0.14); }
.log-entry.recv    { border-left-color: rgba(111, 181, 165, 0.5); }
.log-entry.recv    .lv { color: #a8d8cc; background: rgba(111, 181, 165, 0.13); }
.log-entry.send    { border-left-color: rgba(180, 142, 201, 0.5); }
.log-entry.send    .lv { color: #d4bce4; background: rgba(180, 142, 201, 0.14); }

.log-empty {
  color: var(--text-2);
  text-align: center;
  padding: 42px 0;
  font-size: 12.5px;
}

/* ============ 传感器卡片 ============ */

.sensor-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
}

.sensor-card {
  position: relative;
  overflow: hidden;
  padding: 18px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(176, 165, 150, 0.075), rgba(176, 165, 150, 0.03));
  transition: border-color .2s ease, transform .18s ease;
}
.sensor-card:hover { transform: translateY(-2px); }
.sensor-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--sensor-color, var(--accent-a));
  opacity: 0.85;
}
.sensor-card::after {
  content: "";
  position: absolute;
  top: -70px; right: -70px;
  width: 190px; height: 190px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--sensor-glow, rgba(217,119,87,0.16)), transparent 70%);
  pointer-events: none;
}

.sensor-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}
.sensor-label { font-size: 13px; color: var(--text-1); font-weight: 600; }
.sensor-count { font-size: 11px; color: var(--text-2); }

.sensor-value {
  font-family: var(--font-mono);
  font-size: 40px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  display: flex;
  align-items: baseline;
  gap: 7px;
  min-height: 48px;
}
.sensor-value .unit { font-size: 15px; color: var(--text-2); font-weight: 500; }
.sensor-value.na { font-size: 21px; color: var(--text-2); align-items: center; }

.sensor-foot {
  margin-top: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  min-height: 24px;
}
.sensor-time { font-size: 11px; color: var(--text-2); font-family: var(--font-mono); }

.node-chips { display: flex; gap: 6px; flex-wrap: wrap; }
.node-chip {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 9px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-1);
  cursor: pointer;
  transition: all .15s ease;
}
.node-chip:hover { border-color: var(--border-strong); color: var(--text-0); }
.node-chip.active {
  background: var(--sensor-color, var(--accent-a));
  border-color: transparent;
  color: var(--on-accent);
  font-weight: 700;
}

/* ============ 命令预览 ============ */

.cmd-preview {
  font-family: var(--font-mono);
  font-size: 13px;
  color: #eba983;
  background: rgba(14, 12, 9, 0.62);
  border: 1px dashed rgba(217, 119, 87, 0.40);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  word-break: break-all;
}

/* ============ Bootloader ============ */

.notice {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(217, 160, 63, 0.4);
  background: rgba(217, 160, 63, 0.08);
  color: #ecd39c;
  font-size: 13px;
}
.notice .btn { margin-left: auto; }

.dropzone {
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 26px 16px;
  text-align: center;
  color: var(--text-1);
  cursor: pointer;
  transition: all .18s ease;
  background: rgba(15, 13, 10, 0.35);
}
.dropzone:hover, .dropzone.over {
  border-color: rgba(217, 119, 87, 0.6);
  background: rgba(217, 119, 87, 0.06);
  color: var(--text-0);
}
.dropzone .big { font-size: 14px; font-weight: 600; margin-bottom: 5px; }
.dropzone .hint { font-size: 12px; color: var(--text-2); }
.dropzone .file-name { font-family: var(--font-mono); color: #eba983; font-size: 13px; }

.kv-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
}
.kv {
  background: rgba(15, 13, 10, 0.45);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 13px;
}
.kv .k { font-size: 11px; color: var(--text-2); margin-bottom: 4px; letter-spacing: 0.04em; }
.kv .v { font-family: var(--font-mono); font-size: 13.5px; color: var(--text-0); word-break: break-all; }

.progress-track {
  height: 12px;
  border-radius: 999px;
  background: rgba(176, 165, 150, 0.12);
  border: 1px solid var(--border);
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  border-radius: 999px;
  background: var(--accent-grad);
  box-shadow: 0 0 12px rgba(217, 119, 87, 0.5);
  transition: width .25s ease;
  position: relative;
}
.progress-fill.moving::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    -45deg,
    rgba(255, 255, 255, 0.22) 0 10px,
    transparent 10px 20px
  );
  animation: slide 0.9s linear infinite;
}
@keyframes slide { to { background-position: 28px 0; } }

.progress-meta {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-1);
  margin-top: 8px;
}

/* ============ 历史图表 ============ */

.chart-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
  gap: 16px;
}
@media (max-width: 980px) {
  .chart-grid { grid-template-columns: 1fr; }
}

.chart-box { height: 280px; width: 100%; }

.range-chips { display: flex; gap: 8px; flex-wrap: wrap; }
.range-chip {
  font-size: 12.5px;
  padding: 7px 15px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text-1);
  cursor: pointer;
  font-family: inherit;
  transition: all .15s ease;
}
.range-chip:hover { color: var(--text-0); border-color: var(--border-strong); }
.range-chip.active {
  background: var(--accent-grad);
  border-color: transparent;
  color: var(--on-accent);
  font-weight: 700;
}

.summary-chips { display: flex; gap: 8px; flex-wrap: wrap; }
.summary-chip {
  font-size: 11.5px;
  font-family: var(--font-mono);
  color: var(--text-1);
  background: rgba(15, 13, 10, 0.5);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 4px 10px;
}
.summary-chip b { color: var(--text-0); font-weight: 600; }

.chart-error {
  color: #f0a49b;
  font-size: 12.5px;
  padding: 10px 0;
}

/* ============ 总览页 ============ */

.hero {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background:
    radial-gradient(600px 260px at 12% -30%, rgba(217, 119, 87, 0.16), transparent 65%),
    radial-gradient(520px 300px at 92% 130%, rgba(232, 149, 107, 0.14), transparent 65%),
    linear-gradient(180deg, rgba(176, 165, 150, 0.08), rgba(176, 165, 150, 0.03));
  padding: 28px 26px;
}
.hero h1 {
  margin: 0 0 6px;
  font-family: var(--font-serif);
  font-size: 25px;
  letter-spacing: 0.01em;
}
.hero p { margin: 0; color: var(--text-1); font-size: 13.5px; }
.hero-status { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }

.quick-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}
.quick-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(176, 165, 150, 0.07), rgba(176, 165, 150, 0.03));
  cursor: pointer;
  transition: transform .16s ease, border-color .2s ease;
  color: var(--text-0);
  font-family: inherit;
  text-align: left;
}
.quick-card:hover { transform: translateY(-2px); border-color: rgba(217, 119, 87, 0.40); }
.quick-icon {
  width: 40px; height: 40px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 11px;
  background: var(--panel-strong);
  border: 1px solid var(--border);
  transition: background .2s ease, border-color .2s ease, color .2s ease;
}
.quick-icon svg { width: 20px; height: 20px; }
.quick-card:hover .quick-icon {
  background: rgba(217, 119, 87, 0.14);
  border-color: rgba(217, 119, 87, 0.32);
  color: var(--accent-b);
}
.quick-card .q-title { font-size: 13.5px; font-weight: 600; }
.quick-card .q-desc { font-size: 11.5px; color: var(--text-2); margin-top: 3px; }

/* ============ 杂项 ============ */

.muted { color: var(--text-2); font-size: 12px; }
.mono { font-family: var(--font-mono); }
.spacer { flex: 1; }

.sub-list { display: flex; flex-direction: column; gap: 8px; }
.sub-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  background: rgba(15, 13, 10, 0.45);
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 12.5px;
}
.sub-item .topic { flex: 1; word-break: break-all; }
.sub-item .qos { color: var(--text-2); font-size: 11px; flex: none; }

.fade-enter-active { transition: opacity .22s ease, transform .22s ease; }
.fade-enter-from { opacity: 0; transform: translateY(6px); }

/* 载入画面 */
.boot-loading {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--text-2);
  font-size: 13px;
  letter-spacing: 0.2em;
  font-family: var(--font-mono);
}

/* ============ 响应式 ============ */

@media (max-width: 860px) {
  .sidebar {
    position: static;
    width: 100%;
    height: auto;
    flex-direction: row;
    align-items: center;
    padding: 10px 14px;
    gap: 10px;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  .brand { border: none; padding: 0; margin: 0; }
  .brand-sub, .sidebar-foot { display: none; }
  .nav { flex-direction: row; overflow-x: auto; }
  .nav-item { padding: 8px 10px; white-space: nowrap; }
  .nav-item.active::before { display: none; }
  .nav-home { margin-top: 0; border-top: none; padding-top: 8px; }
  .layout { flex-direction: column; }
  .main { margin-left: 0; padding: 16px 14px 32px; }
}