:root {
  --bg: #f4f7fb;
  --panel: #ffffff;
  --text: #1d2733;
  --muted: #6e7d8f;
  --line: #dfe7f0;
  --brand: #1268d6;
  --brand-dark: #084a9e;
  --green: #159957;
  --amber: #b7791f;
  --red: #c24137;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

button {
  border: 0;
  cursor: pointer;
}

.login-view {
  display: none;
  min-height: 100vh;
  place-items: center;
  padding: 24px;
  background: linear-gradient(135deg, #edf4fc 0%, #f8fafc 48%, #eef8f2 100%);
}

.login-card,
.panel,
.dialog-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 18px 50px rgba(24, 44, 69, 0.08);
}

.login-card {
  width: min(420px, 100%);
  padding: 34px;
}

.brand-mark,
.logo span {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  color: #fff;
  background: var(--brand);
  font-weight: 800;
}

.login-card h1 {
  margin: 18px 0 8px;
  font-size: 26px;
}

.login-card p,
.topbar p {
  margin: 0 0 24px;
  color: var(--muted);
}

label {
  display: grid;
  gap: 8px;
  color: #314255;
  font-weight: 650;
}

input,
textarea,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 11px 12px;
  color: var(--text);
  background: #fff;
  outline: none;
}

textarea {
  resize: vertical;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(18, 104, 214, 0.12);
}

.login-card label + label,
.login-card label + button {
  margin-top: 16px;
}

.login-card button,
.primary {
  border-radius: 6px;
  padding: 11px 18px;
  color: #fff;
  background: var(--brand);
  font-weight: 700;
}

.primary:hover,
.login-card button:hover {
  background: var(--brand-dark);
}

.form-message {
  min-height: 22px;
  margin-top: 12px;
  color: var(--red);
}

.admin-shell {
  display: none;
  min-height: 100vh;
}

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: 232px;
  padding: 22px 14px;
  background: #182636;
  color: #fff;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 8px 26px;
}

.logo span {
  width: 38px;
  height: 38px;
  background: #2f80ed;
}

.nav {
  width: 100%;
  margin: 4px 0;
  padding: 12px 14px;
  border-radius: 6px;
  text-align: left;
  color: #d8e4f0;
  background: transparent;
}

.nav.active,
.nav:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

.nav.subtle {
  margin-top: 28px;
  color: #aab9ca;
}

.content {
  margin-left: 232px;
  padding: 28px;
}

.topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 22px;
}

.topbar h1 {
  margin: 0 0 8px;
  font-size: 28px;
}

.view {
  display: none;
}

.view.active {
  display: block;
}

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

.stat-card {
  padding: 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.stat-card strong {
  display: block;
  margin-top: 10px;
  font-size: 30px;
}

.panel {
  padding: 20px;
}

.panel h2 {
  margin: 0 0 18px;
}

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

.flow span {
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #f8fbff;
}

.flow i {
  width: 26px;
  height: 1px;
  background: #aebccc;
}

.toolbar {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 12px;
  margin-bottom: 14px;
}

.table-wrap {
  overflow: auto;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 780px;
}

th,
td {
  padding: 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  color: #58687a;
  background: #f8fafc;
  font-size: 13px;
}

tbody tr:hover {
  background: #fbfdff;
}

.item-title {
  font-weight: 750;
}

.item-meta {
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 9px;
  border-radius: 6px;
  color: #22503a;
  background: #e9f8ef;
  font-size: 13px;
  font-weight: 700;
}

.badge.off {
  color: #7b4e13;
  background: #fff4dd;
}

.row-actions {
  display: flex;
  gap: 8px;
  white-space: nowrap;
}

.ghost,
.danger {
  border: 1px solid var(--line);
  border-radius: 6px;
  min-width: 58px;
  padding: 8px 10px;
  background: #fff;
  white-space: nowrap;
}

.danger {
  color: var(--red);
}

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

.wide {
  grid-column: 1 / -1;
}

dialog {
  width: min(760px, calc(100vw - 28px));
  border: 0;
  border-radius: 8px;
  padding: 0;
}

dialog::backdrop {
  background: rgba(8, 18, 30, 0.45);
}

.dialog-card {
  padding: 22px;
}

.dialog-card h2 {
  grid-column: 1 / -1;
  margin: 0;
}

.dialog-actions {
  grid-column: 1 / -1;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.mini-list {
  color: var(--muted);
  line-height: 1.7;
  white-space: pre-wrap;
}

body.logged-out .login-view {
  display: grid;
}

body.logged-in .admin-shell {
  display: block;
}

@media (max-width: 860px) {
  .sidebar {
    position: static;
    width: auto;
  }

  .admin-shell {
    display: none;
  }

  body.logged-in .admin-shell {
    display: block;
  }

  .content {
    margin-left: 0;
    padding: 18px;
  }

  .stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .toolbar,
  .form-grid,
  .dialog-card {
    grid-template-columns: 1fr;
  }
}