:root {
  --bg: #f2efe8;
  --paper: #fffaf2;
  --ink: #1f2520;
  --muted: #5f685f;
  --line: rgba(31, 37, 32, 0.12);
  --brand: #c55c35;
  --brand-dark: #8b3f23;
  --success: #1d7f5d;
  --warn: #b16b14;
  --danger: #b33f35;
  --shadow: 0 18px 50px rgba(66, 46, 26, 0.08);
  font-family: "Avenir Next", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(197, 92, 53, 0.14), transparent 26%),
    radial-gradient(circle at top right, rgba(38, 106, 86, 0.11), transparent 24%),
    linear-gradient(180deg, #f7f1e7 0%, #ece6dc 100%);
}

a {
  color: inherit;
}

.admin-shell,
.login-shell {
  width: 100%;
  min-height: 100vh;
}

.admin-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  min-height: 100vh;
}

.admin-side {
  padding: 32px 28px;
  background: rgba(29, 36, 31, 0.94);
  color: #f6efdf;
}

.side-title,
.login-title {
  margin: 0;
  font-size: 30px;
  line-height: 1.1;
  letter-spacing: 0.02em;
}

.side-subtitle,
.login-subtitle {
  margin: 14px 0 0;
  color: rgba(246, 239, 223, 0.72);
  line-height: 1.7;
}

.login-subtitle {
  color: var(--muted);
}

.side-card,
.panel,
.login-card,
.status-banner {
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
  background: rgba(255, 250, 242, 0.98);
}

.side-card {
  margin-top: 28px;
  padding: 20px;
  color: var(--ink);
}

.side-card h2,
.panel h2 {
  margin: 0 0 12px;
  font-size: 18px;
}

.side-card p,
.panel p,
.status-banner p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.meta-list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.meta-list li {
  margin-bottom: 10px;
  color: var(--muted);
  line-height: 1.6;
}

.meta-list strong {
  color: var(--ink);
}

.side-actions {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

.admin-main {
  padding: 32px;
}

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

.hero-copy h1 {
  margin: 0;
  font-size: 34px;
  letter-spacing: 0.02em;
}

.hero-copy p {
  margin: 12px 0 0;
  max-width: 760px;
  color: var(--muted);
  line-height: 1.7;
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(180px, 1fr));
  gap: 12px;
  min-width: 360px;
}

.hero-tile {
  padding: 18px;
  border-radius: 18px;
  background: rgba(255, 250, 242, 0.82);
  border: 1px solid var(--line);
}

.hero-tile strong {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  color: var(--muted);
}

.hero-tile span {
  font-size: 16px;
  word-break: break-all;
}

.status-banner {
  margin-bottom: 24px;
  padding: 18px 20px;
}

.status-banner.success {
  border-color: rgba(29, 127, 93, 0.25);
}

.status-banner.error {
  border-color: rgba(179, 63, 53, 0.25);
}

.status-banner.warn {
  border-color: rgba(177, 107, 20, 0.25);
}

.admin-grid {
  display: grid;
  grid-template-columns: minmax(320px, 400px) minmax(0, 1fr);
  gap: 24px;
}

.panel {
  padding: 24px;
}

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

.panel-head p {
  max-width: 520px;
}

.wifi-form {
  display: grid;
  gap: 14px;
}

.field,
.field-check {
  display: grid;
  gap: 8px;
}

.field label,
.field-check label {
  font-size: 14px;
  font-weight: 600;
}

.field input,
.field textarea,
.login-form input {
  width: 100%;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(31, 37, 32, 0.16);
  background: #fff;
  color: var(--ink);
  font: inherit;
}

.field textarea {
  min-height: 104px;
  resize: vertical;
}

.field-check {
  grid-auto-flow: column;
  justify-content: start;
  align-items: center;
}

.field-check input {
  width: 18px;
  height: 18px;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.18s ease, opacity 0.18s ease;
}

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

.btn-primary {
  color: #fffaf2;
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
}

.btn-secondary {
  color: var(--ink);
  background: rgba(31, 37, 32, 0.08);
}

.btn-danger {
  color: #fffaf2;
  background: linear-gradient(135deg, #b33f35, #8d3029);
}

.btn-ghost {
  color: #f6efdf;
  background: rgba(255, 255, 255, 0.12);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th,
.data-table td {
  padding: 14px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.data-table th {
  font-size: 13px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.table-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.table-actions button,
.badge {
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  padding: 8px 12px;
  font: inherit;
}

.badge {
  display: inline-block;
  padding: 6px 10px;
  font-size: 12px;
}

.badge.success {
  color: var(--success);
  border-color: rgba(29, 127, 93, 0.22);
}

.badge.warn {
  color: var(--warn);
  border-color: rgba(177, 107, 20, 0.22);
}

.qr-thumb {
  width: 92px;
  height: 92px;
  object-fit: cover;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: #fff;
}

.mini-meta {
  margin-top: 8px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
  word-break: break-all;
}

.muted {
  color: var(--muted);
}

.login-shell {
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: min(520px, 100%);
  padding: 32px;
}

.login-form {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

.login-note {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  line-height: 1.7;
}

.error-text {
  color: var(--danger);
}

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

  .admin-side {
    padding-bottom: 8px;
  }

  .hero {
    flex-direction: column;
  }

  .hero-meta,
  .admin-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .admin-main {
    padding: 18px;
  }

  .panel,
  .login-card {
    padding: 20px;
  }

  .hero-copy h1,
  .side-title,
  .login-title {
    font-size: 26px;
  }
}