/* =====================================================================
   Apple Liquid Glass 设计系统
   ---------------------------------------------------------------------
   核心材质构成（自下而上）：
   1. 环境光斑层   — 多点径向渐变，模拟玻璃后的环境色散
   2. 磨砂基底     — backdrop-filter: blur() + saturate()
   3. 顶部高光     — inset 0 1px 0 rgba(255,255,255,.5) 描边模拟厚度
   4. 边缘折射     — 内外双层阴影 + 渐变边框模拟光线折射
   5. 内容层       — 前景内容，轻微投影保证可读性

   色调跟随系统：prefers-color-scheme，自动切换 light / dark
   透明度可调：CSS 变量 --glass-alpha，由滑块实时控制
   ===================================================================== */

:root {
  /* ---- 玻璃透明度（可调） ---- */
  --glass-alpha: 0.62;
  --glass-blur: 22px;
  --glass-sat: 180%;
  --glass-border-alpha: 0.42;
  --glass-highlight: 0.55;

  /* ---- 间距与圆角 ---- */
  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 28px;
  --r-pill: 999px;

  /* ---- 动效 ---- */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --dur: 0.32s;

  /* ---- 语义色（固定，不随主题变） ---- */
  --up: #e8453c;          /* 红涨 */
  --down: #12a05c;        /* 绿跌 */
  --flat: #8a94a6;
  --warn: #f0a020;

  /* 六层漏斗配色 */
  --f0: #0a84ff;
  --f1: #5e5ce6;
  --f2: #9b5de5;
  --f3: #bf5af2;
  --f4: #ff6482;
  --f5: #ff375f;
}

/* ==================== 浅色（系统默认） ==================== */
:root,
:root[data-theme='light'] {
  --bg-base: #eef1f6;
  --text-1: #10141f;
  --text-2: #5b6478;
  --text-3: #8b94a8;

  --glass-bg: rgba(255, 255, 255, var(--glass-alpha));
  --glass-bg-strong: rgba(255, 255, 255, calc(var(--glass-alpha) + 0.18));
  --glass-border: rgba(255, 255, 255, var(--glass-border-alpha));
  --glass-shadow: 0 8px 32px rgba(15, 23, 42, 0.10), 0 2px 8px rgba(15, 23, 42, 0.05);
  --glass-inner: inset 0 1px 0 rgba(255, 255, 255, 0.9);

  --sep: rgba(16, 20, 31, 0.08);
  --fill-soft: rgba(16, 20, 31, 0.045);
  --fill-hover: rgba(16, 20, 31, 0.07);

  /* 环境光斑（浅色：柔和彩色） */
  --amb-1: rgba(10, 132, 255, 0.22);
  --amb-2: rgba(191, 90, 242, 0.18);
  --amb-3: rgba(255, 100, 130, 0.16);
  --amb-4: rgba(48, 209, 88, 0.14);
}

/* ==================== 深色（系统深色） ==================== */
:root[data-theme='dark'] {
  --bg-base: #08080c;
  --text-1: #f5f5f7;
  --text-2: #a1a1aa;
  --text-3: #6e6e78;

  --glass-bg: rgba(28, 28, 34, var(--glass-alpha));
  --glass-bg-strong: rgba(38, 38, 46, calc(var(--glass-alpha) + 0.16));
  --glass-border: rgba(255, 255, 255, calc(var(--glass-border-alpha) * 0.55));
  --glass-shadow: 0 12px 40px rgba(0, 0, 0, 0.55), 0 2px 10px rgba(0, 0, 0, 0.35);
  --glass-inner: inset 0 1px 0 rgba(255, 255, 255, 0.14);

  --sep: rgba(255, 255, 255, 0.10);
  --fill-soft: rgba(255, 255, 255, 0.06);
  --fill-hover: rgba(255, 255, 255, 0.10);

  --amb-1: rgba(10, 132, 255, 0.28);
  --amb-2: rgba(191, 90, 242, 0.24);
  --amb-3: rgba(255, 55, 95, 0.20);
  --amb-4: rgba(48, 209, 88, 0.16);
}

/* ==================== 基础 ==================== */

*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  overscroll-behavior-y: none;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'PingFang SC',
    'Helvetica Neue', 'Microsoft YaHei', system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.47;
  color: var(--text-1);
  background: var(--bg-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-tap-highlight-color: transparent;
  transition: background var(--dur) var(--ease-out), color var(--dur) var(--ease-out);
}

/* ---- 环境光斑背景层（玻璃折射的来源） ---- */
#ambient {
  position: fixed;
  inset: 0;
  z-index: -2;
  overflow: hidden;
  background: var(--bg-base);
}

#ambient::before,
#ambient::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  will-change: transform;
}

#ambient::before {
  width: 62vw; height: 62vw;
  top: -22vw; left: -14vw;
  background: radial-gradient(circle at 30% 30%, var(--amb-1), transparent 68%);
  animation: drift1 34s ease-in-out infinite alternate;
}

#ambient::after {
  width: 58vw; height: 58vw;
  bottom: -20vw; right: -12vw;
  background: radial-gradient(circle at 70% 70%, var(--amb-3), transparent 68%);
  animation: drift2 40s ease-in-out infinite alternate;
}

#ambient > .amb-2,
#ambient > .amb-3 {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  will-change: transform;
}

#ambient > .amb-2 {
  width: 48vw; height: 48vw;
  top: 42%; left: 58%;
  background: radial-gradient(circle at 50% 50%, var(--amb-2), transparent 66%);
  animation: drift3 30s ease-in-out infinite alternate;
}

#ambient > .amb-3 {
  width: 40vw; height: 40vw;
  top: 8%; right: 14%;
  background: radial-gradient(circle at 50% 50%, var(--amb-4), transparent 66%);
  animation: drift1 44s ease-in-out infinite alternate-reverse;
}

@keyframes drift1 {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(9vw, 7vh) scale(1.16); }
}
@keyframes drift2 {
  from { transform: translate(0, 0) scale(1.06); }
  to   { transform: translate(-8vw, -6vh) scale(0.92); }
}
@keyframes drift3 {
  from { transform: translate(0, 0) scale(0.94); }
  to   { transform: translate(-11vw, 5vh) scale(1.18); }
}

/* ==================== Liquid Glass 材质 ==================== */

.glass {
  position: relative;
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat));
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat));
  border: 1px solid var(--glass-border);
  border-radius: var(--r-lg);
  box-shadow: var(--glass-shadow), var(--glass-inner);
}

/* 顶部高光：模拟玻璃上沿折射 */
.glass::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, var(--glass-highlight)) 0%,
    rgba(255, 255, 255, 0) 42%
  );
  opacity: 0.5;
  mix-blend-mode: overlay;
}

/* 按压反馈：材质压缩 */
.glass.pressable {
  cursor: pointer;
  transition: transform 0.22s var(--ease-spring),
              box-shadow 0.22s var(--ease-out),
              background 0.22s var(--ease-out);
}
.glass.pressable:active {
  transform: scale(0.975);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.12), var(--glass-inner);
}

.glass-strong { background: var(--glass-bg-strong); }

/* 导航栏：更薄的玻璃 + 底部折射边 */
.nav-glass {
  background: var(--glass-bg-strong);
  -webkit-backdrop-filter: blur(28px) saturate(200%);
  backdrop-filter: blur(28px) saturate(200%);
  border-bottom: 1px solid var(--sep);
  box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06), var(--glass-inner);
}

/* ==================== 布局 ==================== */

#app {
  min-height: 100%;
  display: flex;
  flex-direction: column;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px calc(10px + env(safe-area-inset-top)) 16px;
  padding-top: calc(10px + env(safe-area-inset-top));
  min-height: 52px;
}

.topbar h1 {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.02em;
  flex: 1;
}

.topbar .sub {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-3);
  margin-top: -1px;
}

.content {
  flex: 1;
  padding: 4px 14px calc(96px + env(safe-area-inset-bottom));
  max-width: 720px;
  width: 100%;
  margin: 0 auto;
}

@media (min-width: 900px) {
  .content { max-width: 860px; }
  .tabbar { max-width: 860px; margin: 0 auto; border-radius: var(--r-xl) var(--r-xl) 0 0; }
}

/* ==================== 底部 Tab（毛玻璃药丸） ==================== */

.tabbar {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 60;
  display: flex;
  padding: 6px 10px calc(6px + env(safe-area-inset-bottom));
  gap: 4px;
  background: var(--glass-bg-strong);
  -webkit-backdrop-filter: blur(30px) saturate(200%);
  backdrop-filter: blur(30px) saturate(200%);
  border-top: 1px solid var(--glass-border);
  box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.10), var(--glass-inner);
}

.tab {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 7px 4px;
  border: 0;
  background: transparent;
  color: var(--text-3);
  font-size: 10.5px;
  font-weight: 600;
  cursor: pointer;
  border-radius: var(--r-md);
  transition: color 0.2s, background 0.24s var(--ease-out);
  font-family: inherit;
}

.tab svg { width: 22px; height: 22px; }

.tab.active {
  color: #0a84ff;
  background: rgba(10, 132, 255, 0.12);
}

:root[data-theme='dark'] .tab.active {
  color: #64b5ff;
  background: rgba(10, 132, 255, 0.18);
}

/* ==================== 通用元素 ==================== */

/* 内联 SVG 图标统一尺寸。
   ICON 常量输出的 svg 均带 .ic 类；此处需覆盖下方 .btn svg 等组件规则，
   故用 !important 保证生效。 */
svg.ic,
svg.ic.ic.ic {
  width: 1.15em !important;
  height: 1.15em !important;
  min-width: 0;
  flex: 0 0 auto;
  vertical-align: -0.14em;
  display: inline-block;
}

.card {
  composes: glass;
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat));
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat));
  border: 1px solid var(--glass-border);
  border-radius: var(--r-lg);
  box-shadow: var(--glass-shadow), var(--glass-inner);
  padding: 14px;
  margin-bottom: 12px;
  position: relative;
}

.card-title {
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 10px;
  display: flex;
  align-items: center;
  gap: 7px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 11px 18px;
  border: 1px solid var(--glass-border);
  border-radius: var(--r-pill);
  background: var(--glass-bg-strong);
  -webkit-backdrop-filter: blur(14px) saturate(180%);
  backdrop-filter: blur(14px) saturate(180%);
  color: var(--text-1);
  font-size: 14px;
  font-weight: 650;
  font-family: inherit;
  cursor: pointer;
  box-shadow: var(--glass-inner);
  transition: transform 0.2s var(--ease-spring), opacity 0.2s;
  width: 100%;
}
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.btn-primary {
  background: linear-gradient(135deg, #0a84ff, #0060df);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.22);
  box-shadow: 0 6px 20px rgba(10, 132, 255, 0.34), var(--glass-inner);
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  flex: 0 0 auto;
}
.btn-icon svg { width: 18px; height: 18px; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 10px;
  border-radius: var(--r-sm);
  background: var(--fill-soft);
  border: 1px solid transparent;
  font-size: 11.5px;
  font-weight: 600;
  color: var(--text-2);
  cursor: pointer;
  font-family: inherit;
  transition: background 0.2s, color 0.2s;
  white-space: nowrap;
}
.chip:hover { background: var(--fill-hover); }
.chip.on {
  background: rgba(10, 132, 255, 0.16);
  color: #0a84ff;
  border-color: rgba(10, 132, 255, 0.28);
}
:root[data-theme='dark'] .chip.on { color: #64b5ff; }

input[type='text'], input[type='search'], input[type='password'] {
  width: 100%;
  padding: 11px 14px;
  border-radius: var(--r-md);
  border: 1px solid var(--glass-border);
  background: var(--fill-soft);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  color: var(--text-1);
  font-size: 15px;
  font-family: inherit;
  outline: none;
  /* 关键：避免 placeholder 文本溢出输入框 */
  min-width: 0;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: border-color 0.2s, box-shadow 0.2s;
}
/* placeholder 一律使用 font-size，避免某些浏览器下默认字号溢出 */
input::placeholder {
  color: var(--text-3);
  font-size: 14px;
  opacity: 1;
}
input:focus {
  border-color: rgba(10, 132, 255, 0.5);
  box-shadow: 0 0 0 3px rgba(10, 132, 255, 0.14);
}

.row { display: flex; align-items: center; gap: 10px; }
.grow { flex: 1; min-width: 0; }
.muted { color: var(--text-3); }
.dim { color: var(--text-2); }
.tnum { font-variant-numeric: tabular-nums; }
.up { color: var(--up); }
.down { color: var(--down); }
.flat { color: var(--flat); }
.warn { color: var(--warn); }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.sep { height: 1px; background: var(--sep); margin: 12px 0; border: 0; }

.badge {
  display: inline-block;
  padding: 2px 6px;
  border-radius: 5px;
  font-size: 9.5px;
  font-weight: 700;
  background: var(--fill-soft);
  color: var(--text-3);
}

.spinner {
  width: 18px; height: 18px;
  border: 2px solid var(--sep);
  border-top-color: #0a84ff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex: 0 0 auto;
}
@keyframes spin { to { transform: rotate(360deg); } }

.progress {
  height: 6px;
  border-radius: 3px;
  background: var(--fill-soft);
  overflow: hidden;
}
.progress > i {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, #0a84ff, #5e5ce6);
  border-radius: 3px;
  transition: width 0.3s var(--ease-out);
}

/* 滑块 */
input[type='range'] {
  width: 100%;
  height: 22px;
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
  cursor: pointer;
}
input[type='range']::-webkit-slider-runnable-track {
  height: 3px;
  border-radius: 2px;
  background: var(--sep);
}
input[type='range']::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 17px; height: 17px;
  margin-top: -7px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 5px rgba(0, 0, 0, 0.28);
  border: 0;
}
input[type='range']::-moz-range-thumb {
  width: 17px; height: 17px;
  border-radius: 50%;
  background: #fff;
  border: 0;
  box-shadow: 0 1px 5px rgba(0, 0, 0, 0.28);
}

/* ==================== 模态 / 底部抽屉 ==================== */

.sheet-backdrop {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, 0.34);
  -webkit-backdrop-filter: blur(3px);
  backdrop-filter: blur(3px);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  animation: fadeIn 0.26s var(--ease-out);
}

@keyframes fadeIn { from { opacity: 0; } }

.sheet {
  width: 100%;
  max-width: 720px;
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  background: var(--glass-bg-strong);
  -webkit-backdrop-filter: blur(34px) saturate(200%);
  backdrop-filter: blur(34px) saturate(200%);
  border-top: 1px solid var(--glass-border);
  border-radius: var(--r-xl) var(--r-xl) 0 0;
  box-shadow: 0 -8px 40px rgba(0, 0, 0, 0.28), var(--glass-inner);
  animation: slideUp 0.36s var(--ease-out);
  padding-bottom: env(safe-area-inset-bottom);
}

@keyframes slideUp {
  from { transform: translateY(100%); }
}

.sheet-grab {
  width: 36px; height: 4px;
  border-radius: 2px;
  background: var(--text-3);
  opacity: 0.4;
  margin: 9px auto 4px;
  flex: 0 0 auto;
}

.sheet-head {
  display: flex;
  align-items: center;
  padding: 6px 16px 10px;
  flex: 0 0 auto;
}
.sheet-head h2 { margin: 0; font-size: 16px; font-weight: 700; flex: 1; }

.sheet-body {
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 0 16px 20px;
}

/* ==================== Toast ==================== */

#toast {
  position: fixed;
  left: 50%;
  bottom: calc(84px + env(safe-area-inset-bottom));
  transform: translateX(-50%) translateY(14px);
  z-index: 300;
  padding: 10px 18px;
  border-radius: var(--r-pill);
  background: var(--glass-bg-strong);
  -webkit-backdrop-filter: blur(20px) saturate(190%);
  backdrop-filter: blur(20px) saturate(190%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow), var(--glass-inner);
  font-size: 13px;
  font-weight: 600;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.28s, transform 0.28s var(--ease-spring);
  max-width: calc(100vw - 40px);
  text-align: center;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ==================== 工具类 ==================== */

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 12px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px 10px; }
.grid4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px 8px; }

.metric-label { font-size: 10.5px; color: var(--text-3); font-weight: 500; }
.metric-value {
  font-size: 14px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  margin-top: 1px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.empty {
  text-align: center;
  padding: 52px 20px;
  color: var(--text-3);
}
.empty svg { opacity: 0.28; margin-bottom: 10px; }
.empty p { margin: 4px 0; font-size: 13px; }

.skeleton {
  background: linear-gradient(90deg, var(--fill-soft) 25%, var(--fill-hover) 50%, var(--fill-soft) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  border-radius: var(--r-sm);
}
@keyframes shimmer {
  from { background-position: 200% 0; }
  to { background-position: -200% 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ==================== 图标尺寸例外 ==================== */

/* 纯图标按钮内的图标固定 18px（btn-icon 已是 36px 方形） */
.btn-icon > svg.ic,
.btn-icon > span > svg.ic {
  width: 18px !important;
  height: 18px !important;
}

/* 底部 Tab 图标固定 22px */
.tab > svg.ic {
  width: 22px !important;
  height: 22px !important;
}

/* 空状态大图标 */
.empty > svg.ic {
  width: 44px !important;
  height: 44px !important;
  opacity: 0.3;
}

/* 卡片标题内的图标：略大以形成层级 */
.card-title > svg.ic {
  width: 1.25em !important;
  height: 1.25em !important;
}

/* ==================== 后端连通状态指示 ==================== */

.net-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--text-3);
  opacity: 0.35;
  flex: 0 0 auto;
  margin-right: 2px;
}
.net-dot.ok {
  background: var(--down);
  opacity: 1;
  box-shadow: 0 0 6px color-mix(in srgb, var(--down) 55%, transparent);
}
.net-dot.bad {
  background: var(--up);
  opacity: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.net-fix {
  position: absolute;
  width: 16px;
  height: 16px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: #fff;
  font-size: 10px;
  font-weight: 800;
  cursor: pointer;
  line-height: 1;
  padding: 0;
}