:root {
  --bg: #eef3f8;
  --bg-accent: #e4ebf3;
  --surface: rgba(255, 255, 255, 0.9);
  --surface-strong: #ffffff;
  --border: #d6e0ea;
  --border-strong: #c5d2df;
  --text: #102033;
  --muted: #5f7082;
  --primary: #1f5fa7;
  --primary-strong: #173f73;
  --primary-soft: rgba(31, 95, 167, 0.12);
  --danger: #c64444;
  --success: #15825d;
  --warning: #b97418;
  --shadow: 0 18px 40px rgba(19, 39, 63, 0.08);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(31, 95, 167, 0.08), transparent 28%),
    linear-gradient(180deg, #f5f8fc 0%, var(--bg) 100%);
}

body {
  line-height: 1.5;
}

a {
  color: inherit;
  text-decoration: none;
}

.admin-login {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 32px 20px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow--light {
  background: var(--primary-soft);
  color: var(--primary-strong);
}

.admin-login__panel {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

.login-card {
  width: 100%;
  max-width: 520px;
  padding: 34px;
  border: 1px solid rgba(255, 255, 255, 0.65);
  border-radius: var(--radius-xl);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.login-card h1 {
  margin: 16px 0 10px;
  font-size: 30px;
  line-height: 1.2;
}

.login-card p {
  margin: 0 0 22px;
  color: var(--muted);
}

.admin-form {
  display: grid;
  gap: 16px;
}

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

.admin-form__field label {
  font-size: 14px;
  font-weight: 600;
  color: #314253;
}

.admin-input,
.admin-textarea,
.admin-select {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #f9fbfd;
  color: var(--text);
  font-size: 14px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.admin-input:focus,
.admin-textarea:focus,
.admin-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(31, 95, 167, 0.12);
  background: #fff;
}

.admin-textarea {
  min-height: 110px;
  resize: vertical;
}

.admin-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 18px;
  border: 0;
  border-radius: 12px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
  transition: transform 0.18s ease, box-shadow 0.18s ease, opacity 0.18s ease;
}

.admin-button:hover {
  transform: translateY(-1px);
}

.admin-button--primary {
  color: #fff;
  background: linear-gradient(180deg, #2c74c8 0%, var(--primary) 100%);
  box-shadow: 0 12px 24px rgba(31, 95, 167, 0.2);
}

.admin-button--secondary {
  color: var(--text);
  background: #edf3f9;
  border: 1px solid var(--border);
}

.admin-alert {
  padding: 12px 14px;
  border-radius: 12px;
  font-size: 14px;
}

.admin-alert--error {
  color: var(--danger);
  background: rgba(198, 68, 68, 0.08);
  border: 1px solid rgba(198, 68, 68, 0.18);
}

.admin-shell {
  display: grid;
  grid-template-columns: 270px 1fr;
  min-height: 100vh;
}

.admin-sidebar {
  padding: 26px 20px;
  color: #fff;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), transparent 24%),
    linear-gradient(180deg, #16324d 0%, #193a5a 100%);
}

.admin-sidebar__brand {
  padding: 18px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.08);
}

.admin-sidebar__brand h1 {
  margin: 10px 0 8px;
  font-size: 24px;
}

.admin-sidebar__brand p {
  margin: 0;
  color: rgba(224, 233, 241, 0.82);
  font-size: 13px;
}

.admin-nav {
  display: grid;
  gap: 10px;
  margin-top: 26px;
}

.admin-nav__link {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding: 14px 16px;
  border-radius: 14px;
  color: rgba(224, 233, 241, 0.9);
  background: rgba(255, 255, 255, 0.04);
  transition: background 0.18s ease, transform 0.18s ease;
}

.admin-nav__link:hover,
.admin-nav__link.is-active {
  background: rgba(45, 123, 224, 0.22);
  transform: translateX(2px);
}

.admin-shell__main {
  padding: 26px;
}

.admin-topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 22px;
}

.admin-topbar h2 {
  margin: 12px 0 6px;
  font-size: 30px;
}

.admin-topbar p {
  margin: 0;
  color: var(--muted);
}

.admin-panel {
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.admin-panel + .admin-panel {
  margin-top: 18px;
}

.admin-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 18px;
}

.admin-stat-card {
  padding: 18px 20px;
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 18px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.admin-stat-card span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.admin-stat-card strong {
  display: block;
  margin: 10px 0 6px;
  font-size: 34px;
  line-height: 1;
}

.admin-stat-card p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.admin-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.admin-toolbar h3 {
  margin: 0;
  font-size: 20px;
}

.admin-toolbar p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.admin-filter-bar {
  display: grid;
  grid-template-columns: 180px 1fr 180px 140px;
  gap: 12px;
  align-items: center;
  margin-bottom: 18px;
}

.admin-filter-bar__title {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary-strong);
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  border-radius: 14px;
}

.admin-table th,
.admin-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}

.admin-table th {
  color: #4a5f72;
  background: #f7fafc;
  font-weight: 700;
}

.admin-table tr:last-child td {
  border-bottom: 0;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
}

.status-badge--success {
  color: var(--success);
  background: rgba(21, 130, 93, 0.12);
}

.status-badge--danger {
  color: var(--danger);
  background: rgba(198, 68, 68, 0.12);
}

.status-badge--warning {
  color: var(--warning);
  background: rgba(185, 116, 24, 0.12);
}

.status-badge--info {
  color: var(--primary-strong);
  background: rgba(31, 95, 167, 0.12);
}

.admin-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.admin-form-grid .admin-form__field--full {
  grid-column: 1 / -1;
}

.admin-empty {
  padding: 28px 20px;
  border: 1px dashed var(--border-strong);
  border-radius: 16px;
  color: var(--muted);
  text-align: center;
  background: rgba(247, 250, 252, 0.8);
}

@media (max-width: 1100px) {
  .admin-form-grid {
    grid-template-columns: 1fr;
  }

  .admin-shell {
    grid-template-columns: 1fr;
  }

  .admin-stats,
  .admin-filter-bar {
    grid-template-columns: 1fr;
  }
}