:root {
  --bg: #eef2f4;
  --bg-accent: #d9e4ea;
  --surface: #ffffff;
  --ink: #1a2b33;
  --muted: #5d717c;
  --line: #c9d6dd;
  --brand: #0f766e;
  --brand-dark: #0b5a54;
  --brand-soft: #d7f0ed;
  --danger: #b42318;
  --danger-soft: #fde8e6;
  --ok: #067647;
  --ok-soft: #e4f7ec;
  --warn: #b54708;
  --warn-soft: #fff4e5;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(26, 43, 51, 0.08);
  --font: "Source Sans 3", "Segoe UI", sans-serif;
  --display: "Fraunces", Georgia, serif;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.12), transparent 35%),
    linear-gradient(160deg, var(--bg), var(--bg-accent));
}

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

.admin-shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: #12343b;
  color: #e8f2f4;
  padding: 28px 20px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.brand {
  font-family: var(--display);
  font-size: 1.55rem;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.brand span {
  display: block;
  margin-top: 6px;
  font-family: var(--font);
  font-size: 0.82rem;
  color: #9db8bf;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.nav a {
  padding: 12px 14px;
  border-radius: 10px;
  color: #d5e6ea;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.nav a:hover,
.nav a.active {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  transform: translateX(2px);
}

.main {
  padding: 28px;
}

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

.topbar h1 {
  margin: 0;
  font-family: var(--display);
  font-size: 2rem;
  letter-spacing: -0.03em;
}

.topbar p {
  margin: 6px 0 0;
  color: var(--muted);
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
}

.panel-header h2 {
  margin: 0;
  font-size: 1.05rem;
}

.panel-body {
  padding: 20px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 22px;
}

.stat {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  animation: rise 0.45s ease both;
}

.stat:nth-child(2) { animation-delay: 0.08s; }
.stat:nth-child(3) { animation-delay: 0.16s; }

.stat .label {
  color: var(--muted);
  font-size: 0.9rem;
}

.stat .value {
  margin-top: 8px;
  font-family: var(--display);
  font-size: 2.2rem;
  color: var(--brand-dark);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: 999px;
  padding: 10px 16px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, opacity 0.15s ease;
}

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

.btn-primary {
  background: var(--brand);
  color: #fff;
}

.btn-primary:hover {
  background: var(--brand-dark);
}

.btn-secondary {
  background: var(--brand-soft);
  color: var(--brand-dark);
}

.btn-danger {
  background: var(--danger-soft);
  color: var(--danger);
}

.btn-sm {
  padding: 7px 12px;
  font-size: 0.88rem;
}

.table-wrap {
  overflow-x: auto;
}

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

th, td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

th {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  background: #f7fafb;
}

tr:hover td {
  background: #f4faf9;
}

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

.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
}

.badge-ok {
  background: var(--ok-soft);
  color: var(--ok);
}

.badge-muted {
  background: #eef2f4;
  color: var(--muted);
}

.badge-warn {
  background: var(--warn-soft);
  color: var(--warn);
}

.alert {
  margin-bottom: 16px;
  padding: 12px 14px;
  border-radius: 10px;
  animation: rise 0.35s ease;
}

.alert-success {
  background: var(--ok-soft);
  color: var(--ok);
}

.alert-error {
  background: var(--danger-soft);
  color: var(--danger);
}

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

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

label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  font-size: 0.92rem;
}

input[type="text"],
input[type="number"],
input[type="url"],
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 11px 12px;
  font: inherit;
  color: var(--ink);
  background: #fff;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.15);
}

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

.checks {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  align-items: center;
  padding-top: 28px;
}

.checks label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-weight: 500;
}

.form-actions {
  display: flex;
  gap: 10px;
  margin-top: 8px;
}

.empty {
  padding: 36px 20px;
  text-align: center;
  color: var(--muted);
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 960px) {
  .admin-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    padding: 18px;
  }

  .nav {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .stats,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .checks {
    padding-top: 0;
  }
}