:root {
  color-scheme: dark;
  --bg: #070a12;
  --panel: #111827;
  --line: rgba(160, 174, 208, 0.18);
  --text: #f6f8ff;
  --muted: #9ca8bd;
  --accent: #8b5cf6;
  --accent-2: #5f7cff;
  font-family: Inter, "Microsoft YaHei", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background: linear-gradient(135deg, #060913, #0b1020);
}

button,
input {
  font: inherit;
}

button {
  color: inherit;
  cursor: pointer;
}

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

.login-card,
.panel,
.admin-main header,
.card {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(17, 24, 39, 0.94);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
}

.login-card {
  width: min(420px, 100%);
  display: grid;
  gap: 14px;
  padding: 24px;
}

h1,
h2,
p {
  margin: 0;
}

p,
small,
.table span {
  color: var(--muted);
}

#loginMessage,
#configMessage {
  min-height: 20px;
  color: #ffb4c4;
}

button:disabled {
  cursor: wait;
  opacity: 0.72;
}

label {
  display: grid;
  gap: 7px;
}

input {
  min-height: 42px;
  padding: 0 12px;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(5, 8, 15, 0.75);
  outline: 0;
}

button {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.055);
}

.login-card button,
.admin-main header button,
.panel button {
  border: 0;
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  font-weight: 800;
}

.admin-shell {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  min-height: 100vh;
}

.admin-sidebar {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 22px 16px;
  border-right: 1px solid var(--line);
  background: rgba(5, 8, 15, 0.86);
}

.admin-sidebar strong {
  font-size: 20px;
}

.admin-sidebar nav {
  display: grid;
  gap: 8px;
}

.admin-sidebar button,
.admin-sidebar a {
  min-height: 42px;
  display: flex;
  align-items: center;
  padding: 0 12px;
  color: #d8e0f2;
  text-decoration: none;
  text-align: left;
}

.admin-sidebar button.active,
.admin-sidebar button:hover,
.admin-sidebar a:hover {
  border-color: rgba(139, 92, 246, 0.7);
  background: rgba(139, 92, 246, 0.18);
}

.admin-sidebar .sidebar-action {
  justify-content: center;
  border-color: rgba(255, 107, 139, 0.38);
  background: rgba(255, 107, 139, 0.08);
}

.admin-sidebar a {
  margin-top: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.admin-main {
  min-width: 0;
  padding: 22px;
}

.admin-main header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  padding: 18px;
  margin-bottom: 16px;
}

.section {
  display: none;
}

.section.active {
  display: block;
}

.cards {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.card,
.panel {
  padding: 16px;
}

.card strong {
  display: block;
  font-size: 30px;
  margin-top: 8px;
}

.panel {
  display: grid;
  gap: 14px;
}

.table {
  display: grid;
  gap: 8px;
}

.row {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1fr;
  gap: 10px;
  align-items: center;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.045);
}

@media (max-width: 900px) {
  .admin-shell,
  .cards {
    grid-template-columns: 1fr;
  }
}