/* OSS CDN 管理后台 — 设计令牌来源: design-system/oss-cdn/MASTER.md
   风格: Dark Mode (OLED) · Developer Tool · dashboard-layout */

:root {
  --color-primary: #1E293B;
  --color-on-primary: #FFFFFF;
  --color-secondary: #334155;
  --color-accent: #22C55E;
  --color-on-accent: #0F172A;
  --color-background: #0F172A;
  --color-foreground: #F8FAFC;
  --color-card: #1B2336;
  --color-card-fg: #F8FAFC;
  --color-muted: #272F42;
  --color-muted-fg: #94A3B8;
  --color-border: #475569;
  --color-border-subtle: #2C3548;
  --color-destructive: #EF4444;
  --color-warning: #F59E0B;

  --font-body: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.4);

  --sidebar-w: 224px;
  --topbar-h: 56px;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--color-background);
  color: var(--color-foreground);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; border-radius: var(--radius-sm); }
::selection { background: rgba(34, 197, 94, 0.35); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* ---------------- 布局骨架 ---------------- */
.app { display: flex; min-height: 100vh; }
.sidebar {
  width: var(--sidebar-w);
  flex: 0 0 var(--sidebar-w);
  background: var(--color-card);
  border-right: 1px solid var(--color-border-subtle);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--color-border-subtle);
  font-weight: 700; letter-spacing: 0.2px;
}
.brand svg { color: var(--color-accent); flex: 0 0 auto; }
.brand .sub { display: block; font-size: 11px; color: var(--color-muted-fg); font-weight: 400; }
.nav { padding: var(--space-md) var(--space-sm); display: flex; flex-direction: column; gap: 2px; flex: 1; overflow-y: auto; }
.nav a {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: var(--radius-md);
  color: var(--color-muted-fg); cursor: pointer;
  transition: background 180ms ease, color 180ms ease;
}
.nav a:hover { background: var(--color-muted); color: var(--color-foreground); text-decoration: none; }
.nav a.active { background: var(--color-primary); color: var(--color-foreground); }
.nav a.active svg { color: var(--color-accent); }
.nav a.disabled { opacity: 0.45; cursor: not-allowed; }
.nav .nav-badge { margin-left: auto; font-size: 10px; padding: 1px 6px; border-radius: 999px; background: var(--color-muted); color: var(--color-muted-fg); }
.sidebar-foot { padding: var(--space-md) var(--space-lg); border-top: 1px solid var(--color-border-subtle); display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.sidebar-foot .who { color: var(--color-muted-fg); font-size: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.topbar {
  height: var(--topbar-h);
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-md);
  padding: 0 var(--space-lg);
  border-bottom: 1px solid var(--color-border-subtle);
  background: rgba(15, 23, 42, 0.85);
  position: sticky; top: 0; z-index: 10;
}
.topbar h1 { font-size: 16px; margin: 0; font-weight: 600; }
.topbar .site-link { font-size: 12px; color: var(--color-muted-fg); font-family: var(--font-mono); }
.content { padding: var(--space-lg); max-width: 1200px; width: 100%; margin: 0 auto; }

/* ---------------- 组件 ---------------- */
.card {
  background: var(--color-card);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: box-shadow 200ms ease;
}
.card:hover { box-shadow: var(--shadow-md); }
.card h3 { margin: 0 0 var(--space-md); font-size: 14px; font-weight: 600; color: var(--color-muted-fg); text-transform: none; }

.grid-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-md); }
.stat { background: var(--color-card); border: 1px solid var(--color-border-subtle); border-radius: var(--radius-lg); padding: var(--space-md) var(--space-lg); }
.stat .label { color: var(--color-muted-fg); font-size: 12px; display: flex; align-items: center; gap: 6px; }
.stat .value { font-size: 26px; font-weight: 700; margin-top: 6px; font-family: var(--font-mono); letter-spacing: -0.5px; }
.stat .hint { font-size: 12px; color: var(--color-muted-fg); margin-top: 2px; }
.stat svg { color: var(--color-accent); }

.grid-2 { display: grid; grid-template-columns: 3fr 2fr; gap: var(--space-md); margin-top: var(--space-md); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  min-height: 38px; padding: 8px 16px;
  border-radius: var(--radius-md); border: 1px solid transparent;
  font-weight: 600; cursor: pointer;
  transition: all 180ms ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary { background: var(--color-accent); color: var(--color-on-accent); }
.btn-primary:hover { opacity: 0.9; }
.btn-secondary { background: transparent; color: var(--color-foreground); border-color: var(--color-border); }
.btn-secondary:hover { background: var(--color-muted); }
.btn-danger { background: transparent; color: var(--color-destructive); border-color: rgba(239, 68, 68, 0.4); }
.btn-danger:hover { background: rgba(239, 68, 68, 0.12); }
.btn-ghost { background: transparent; color: var(--color-muted-fg); min-height: 32px; padding: 4px 8px; }
.btn-ghost:hover { color: var(--color-foreground); background: var(--color-muted); transform: none; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.btn svg { flex: 0 0 auto; }

.input, select.input, textarea.input {
  width: 100%; padding: 9px 12px;
  background: var(--color-background);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  color: var(--color-foreground);
  transition: border-color 200ms ease, box-shadow 200ms ease;
}
.input:focus { border-color: var(--color-accent); outline: none; box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.18); }
.input::placeholder { color: var(--color-muted-fg); }
select.input option { background: var(--color-card); }
.field { margin-bottom: var(--space-md); }
.field label { display: block; font-size: 12px; color: var(--color-muted-fg); margin-bottom: 6px; }
.field .tip { font-size: 11px; color: var(--color-muted-fg); margin-top: 4px; }

table { width: 100%; border-collapse: collapse; }
th { text-align: left; font-size: 12px; font-weight: 600; color: var(--color-muted-fg); padding: 10px 12px; border-bottom: 1px solid var(--color-border-subtle); white-space: nowrap; }
td { padding: 10px 12px; border-bottom: 1px solid var(--color-border-subtle); vertical-align: middle; }
tbody tr { transition: background 150ms ease; }
tbody tr:hover { background: rgba(39, 47, 66, 0.5); }
.table-wrap { overflow-x: auto; }
.mono { font-family: var(--font-mono); font-size: 12.5px; }
.dim { color: var(--color-muted-fg); }

.badge { display: inline-flex; align-items: center; gap: 4px; padding: 2px 10px; border-radius: 999px; font-size: 11px; font-weight: 600; }
.badge.ok { background: rgba(34, 197, 94, 0.15); color: var(--color-accent); }
.badge.off { background: var(--color-muted); color: var(--color-muted-fg); }
.badge.warn { background: rgba(245, 158, 11, 0.15); color: var(--color-warning); }

.pager { display: flex; align-items: center; justify-content: space-between; gap: var(--space-md); margin-top: var(--space-md); flex-wrap: wrap; }
.pager .pages { display: flex; gap: var(--space-xs); align-items: center; }
.pager .pages span { color: var(--color-muted-fg); font-size: 12px; padding: 0 6px; }

.empty { text-align: center; color: var(--color-muted-fg); padding: var(--space-2xl) var(--space-lg); }
.empty svg { opacity: 0.4; margin-bottom: var(--space-sm); }

/* ---------------- 登录页 ---------------- */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: var(--space-lg);
  background:
    radial-gradient(600px 300px at 20% 0%, rgba(34, 197, 94, 0.08), transparent 60%),
    radial-gradient(600px 300px at 90% 100%, rgba(30, 41, 59, 0.6), transparent 60%),
    var(--color-background);
}
.login-card { width: 380px; max-width: 94vw; background: var(--color-card); border: 1px solid var(--color-border-subtle); border-radius: var(--radius-lg); padding: var(--space-xl); box-shadow: var(--shadow-xl); }
.login-card .brand { padding: 0 0 var(--space-lg); border-bottom: none; justify-content: center; text-align: center; }
.login-card h2 { text-align: center; margin: 0 0 var(--space-xs); font-size: 18px; }
.login-card .sub { text-align: center; color: var(--color-muted-fg); font-size: 12px; margin-bottom: var(--space-lg); }

/* ---------------- Modal / Toast ---------------- */
.modal-overlay {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(0, 0, 0, 0.55); backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center; padding: var(--space-lg);
}
.modal { background: var(--color-card); border: 1px solid var(--color-border-subtle); border-radius: 16px; padding: var(--space-xl); width: 520px; max-width: 94vw; max-height: 86vh; overflow-y: auto; box-shadow: var(--shadow-xl); }
.modal h3 { margin: 0 0 var(--space-md); font-size: 16px; }
.modal .actions { display: flex; justify-content: flex-end; gap: var(--space-sm); margin-top: var(--space-lg); }

.toasts { position: fixed; right: var(--space-lg); top: calc(var(--topbar-h) + var(--space-md)); z-index: 200; display: flex; flex-direction: column; gap: var(--space-sm); }
.toast {
  background: var(--color-card); border: 1px solid var(--color-border-subtle);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-md); padding: 10px 14px; min-width: 240px; max-width: 420px;
  box-shadow: var(--shadow-lg); font-size: 13px;
  animation: slide-in 200ms ease;
}
.toast.error { border-left-color: var(--color-destructive); }
@keyframes slide-in { from { opacity: 0; transform: translateX(12px); } to { opacity: 1; transform: none; } }

/* ---------------- 图表 ---------------- */
.chart { display: flex; align-items: flex-end; gap: 10px; height: 160px; padding-top: var(--space-sm); }
.chart .bar-col { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 6px; height: 100%; justify-content: flex-end; }
.chart .bar { width: 100%; max-width: 42px; background: linear-gradient(180deg, var(--color-accent), rgba(34, 197, 94, 0.35)); border-radius: 4px 4px 0 0; min-height: 2px; transition: height 300ms ease; }
.chart .bar-label { font-size: 10px; color: var(--color-muted-fg); font-family: var(--font-mono); }
.chart .bar-val { font-size: 10px; color: var(--color-muted-fg); }

.ext-row { display: flex; align-items: center; gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--color-border-subtle); }
.ext-row:last-child { border-bottom: none; }
.ext-row .ext-tag { font-family: var(--font-mono); font-size: 12px; background: var(--color-muted); padding: 2px 10px; border-radius: 6px; min-width: 52px; text-align: center; }
.ext-row .meter { flex: 1; height: 6px; background: var(--color-muted); border-radius: 999px; overflow: hidden; }
.ext-row .meter i { display: block; height: 100%; background: var(--color-accent); border-radius: 999px; }
.ext-row .n { font-family: var(--font-mono); font-size: 12px; color: var(--color-muted-fg); min-width: 60px; text-align: right; }

/* ---------------- 上传区 ---------------- */
.dropzone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
  color: var(--color-muted-fg);
  cursor: pointer;
  transition: border-color 180ms ease, background 180ms ease, color 180ms ease;
}
.dropzone svg { display: block; margin: 0 auto var(--space-sm); color: var(--color-accent); }
.dropzone strong { color: var(--color-foreground); }
.dropzone:hover, .dropzone:focus-visible, .dropzone.dragover {
  border-color: var(--color-accent);
  background: rgba(34, 197, 94, 0.06);
  color: var(--color-foreground);
}
.up-item { display: flex; align-items: center; gap: 10px; padding: 10px 0 0; margin-top: 10px; border-top: 1px solid var(--color-border-subtle); font-size: 13px; }
.up-item .up-name { min-width: 0; flex: 0 1 auto; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 40%; }
.up-item .meter { width: 160px; height: 6px; background: var(--color-muted); border-radius: 999px; overflow: hidden; flex: 0 0 auto; }
.up-item .meter i { display: block; height: 100%; width: 0; background: var(--color-accent); transition: width 200ms ease; }
.up-item .up-pct { flex: 0 0 auto; }
.up-item .up-url { flex: 1 1 auto; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.up-item.fail .up-pct { color: var(--color-destructive); }

/* ---------------- 响应式 ---------------- */
@media (max-width: 1024px) {
  .grid-stats { grid-template-columns: repeat(2, 1fr); }
  .grid-2 { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  :root { --sidebar-w: 60px; }
  .brand .txt, .nav a .txt, .sidebar-foot .who, .nav .nav-badge { display: none; }
  .brand { justify-content: center; padding: var(--space-md) var(--space-sm); }
  .nav a { justify-content: center; padding: 10px; }
  .sidebar-foot { justify-content: center; padding: var(--space-md) var(--space-sm); }
  .content { padding: var(--space-md); }
}
@media (max-width: 480px) {
  .grid-stats { grid-template-columns: 1fr; }
}