:root {
  color-scheme: dark;
  --bg: #09090b;
  --panel: #18181b;
  --panel-soft: #0f0f13;
  --line: #27272a;
  --text: #fafafa;
  --muted: #a1a1aa;
  --primary: #6366f1;
  --primary-hover: #818cf8;
  --green: #22c55e;
  --red: #ef4444;
  --yellow: #eab308;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 0%, rgba(99, 102, 241, 0.18), transparent 30%),
    var(--bg);
  font-family: "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
}

button, input, select, textarea { font: inherit; }

button {
  border: 0;
  border-radius: 10px;
  padding: 11px 16px;
  color: #fff;
  background: var(--primary);
  font-weight: 800;
  cursor: pointer;
}

button:hover { background: var(--primary-hover); }
button.ghost { border: 1px solid var(--line); color: var(--muted); background: transparent; }
button.danger { border: 1px solid var(--red); color: var(--red); background: transparent; }
button.warning { border: 1px solid var(--yellow); color: var(--yellow); background: transparent; }

input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px;
  color: var(--text);
  background: #09090b;
  outline: none;
}

textarea { resize: vertical; }

label { display: grid; gap: 8px; color: var(--muted); font-size: 13px; }

.eyebrow {
  margin: 0 0 8px;
  color: var(--primary-hover);
  font-size: 12px;
  font-weight: 950;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--panel);
  box-shadow: 0 24px 90px rgba(0, 0, 0, 0.34);
}

.login {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 24px;
}

.login__panel {
  width: min(430px, 100%);
  padding: 34px;
}

.login__panel img { width: 48px; height: 48px; }
.login__panel h1 { margin: 0 0 24px; }
.login__panel button { width: 100%; margin-top: 18px; }

.app {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 24px;
  border-right: 1px solid var(--line);
  padding: 24px;
  background: rgba(9, 9, 11, 0.86);
  backdrop-filter: blur(18px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 950;
  text-decoration: none;
}

.brand img { width: 34px; height: 34px; }

.sidebar nav { display: grid; gap: 10px; }
.sidebar nav button { width: 100%; text-align: left; background: transparent; color: var(--muted); }
.sidebar nav button.is-active { color: #fff; background: var(--primary); }

.site-link {
  margin-top: auto;
  color: var(--muted);
  text-decoration: none;
}

.workspace { padding: 32px; }

.workspace__head {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: flex-start;
  margin-bottom: 24px;
}

.workspace__head h1 { margin: 0; font-size: clamp(30px, 4vw, 54px); }
.workspace__head p:not(.eyebrow) { margin: 8px 0 0; color: var(--muted); }

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.stat {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
  background: var(--panel-soft);
}

.stat span { color: var(--muted); font-size: 13px; }
.stat strong { display: block; margin-top: 8px; font-size: 28px; }

.tab-panel { padding: 22px; }
.panel__head { display: flex; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.panel__head h2 { margin: 0; }
.panel__head p { margin: 6px 0 0; color: var(--muted); }

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 22px;
}

.span-2 { grid-column: 1 / -1; }
.form-actions { display: flex; gap: 10px; align-items: center; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { border-bottom: 1px solid var(--line); padding: 12px; text-align: left; vertical-align: middle; }
th { color: var(--muted); font-weight: 500; }
td small { color: var(--muted); }
.code { color: #a5b4fc; font-family: Consolas, monospace; cursor: pointer; }
.status-active { color: var(--green); }
.status-disabled { color: var(--red); }
.row-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.toast {
  position: fixed;
  z-index: 99;
  left: 50%;
  bottom: -60px;
  transform: translateX(-50%);
  border-radius: 999px;
  padding: 10px 18px;
  color: #fff;
  background: var(--primary);
  transition: bottom 220ms ease;
}

.toast.is-visible { bottom: 26px; }

@media (max-width: 980px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { position: static; height: auto; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .workspace { padding: 18px; }
  .workspace__head { display: block; }
  .form-grid, .stats { grid-template-columns: 1fr; }
}