:root {
  --bg: #0c1222;
  --bg-card: #121a2e;
  --bg-elevated: #1a2540;
  --border: rgba(255, 255, 255, 0.08);
  --text: #e8edf5;
  --text-muted: #8b9bb4;
  --accent: #00c9a7;
  --accent-dim: #00a88c;
  --warn: #f5a623;
  --danger: #ff6b6b;
  --ok: #5cdb95;
  --radius: 12px;
  --font: "DM Sans", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0, 201, 167, 0.12), transparent),
    radial-gradient(ellipse 60% 40% at 100% 50%, rgba(26, 37, 64, 0.5), transparent);
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

.wrap {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--border);
  background: rgba(12, 18, 34, 0.85);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 64px;
}

.logo {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.logo:hover {
  color: var(--accent);
  text-decoration: none;
}
.logo-mark {
  color: var(--accent);
  font-size: 1.25rem;
}

.nav {
  display: flex;
  gap: 0.25rem 1.25rem;
  flex-wrap: wrap;
}
.nav a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.9rem;
  padding: 0.35rem 0;
}
.nav a:hover,
.nav a.active {
  color: var(--accent);
  text-decoration: none;
}

/* Ads */
.ad-slot {
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1rem;
}
.ad-slot--top {
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
}
.ad-placeholder {
  width: 100%;
  max-width: 728px;
  height: 90px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.main-content {
  padding: 2rem 0 3rem;
}

/* Hero */
.hero {
  text-align: center;
  margin-bottom: 2.5rem;
}
.hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  font-weight: 700;
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
}
.hero p {
  color: var(--text-muted);
  max-width: 520px;
  margin: 0 auto;
}

/* Tool grid */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem;
  transition: border-color 0.2s, transform 0.2s;
}
.tool-card:hover {
  border-color: rgba(0, 201, 167, 0.35);
  transform: translateY(-2px);
}
.tool-card--soon {
  opacity: 0.65;
}
.tool-card .icon {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}
.tool-card h2 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}
.tool-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}
.tool-card a.cta {
  display: inline-block;
  margin-top: 1rem;
  font-weight: 600;
  color: var(--accent);
}

/* Tool page */
.page-tool h1 {
  font-size: 1.75rem;
  margin: 0 0 0.5rem;
}
.page-tool .lead {
  color: var(--text-muted);
  margin: 0 0 1.5rem;
}

.form-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.input-lg {
  flex: 1;
  min-width: 200px;
  padding: 0.85rem 1.1rem;
  font-size: 1rem;
  font-family: var(--mono);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  color: var(--text);
}
.input-lg:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 201, 167, 0.15);
}

.btn {
  padding: 0.85rem 1.5rem;
  font-weight: 600;
  font-size: 1rem;
  font-family: var(--font);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  background: linear-gradient(135deg, var(--accent), var(--accent-dim));
  color: #04221c;
}
.btn:hover {
  filter: brightness(1.08);
}
.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.results-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.results-panel h2 {
  margin: 0;
  padding: 1rem 1.25rem;
  font-size: 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
}

/* A record table */
.table-wrap {
  overflow-x: auto;
}
table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
table.data th,
table.data td {
  padding: 0.75rem 1.25rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
table.data th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
table.data td.mono {
  font-family: var(--mono);
  font-size: 0.85rem;
}
.badge {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-ok {
  background: rgba(92, 219, 149, 0.15);
  color: var(--ok);
}
.badge-warn {
  background: rgba(245, 166, 35, 0.15);
  color: var(--warn);
}
.badge-err {
  background: rgba(255, 107, 107, 0.15);
  color: var(--danger);
}

/* Health report */
.health-section {
  padding: 1.25rem;
  border-bottom: 1px solid var(--border);
}
.health-section:last-child {
  border-bottom: none;
}
.health-section h3 {
  margin: 0 0 0.75rem;
  font-size: 0.95rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.alert-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.alert-list li {
  padding: 0.5rem 0.75rem;
  margin-bottom: 0.5rem;
  border-radius: 8px;
  font-size: 0.9rem;
}
.alert-list li.info {
  background: rgba(0, 201, 167, 0.08);
  border-left: 3px solid var(--accent);
}
.alert-list li.warn {
  background: rgba(245, 166, 35, 0.1);
  border-left: 3px solid var(--warn);
}
.alert-list li.bad {
  background: rgba(255, 107, 107, 0.1);
  border-left: 3px solid var(--danger);
}
.kv-grid {
  display: grid;
  gap: 0.5rem;
  font-size: 0.9rem;
}
.kv-grid div {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 0.5rem;
}
.kv-grid dt {
  color: var(--text-muted);
  margin: 0;
}
.kv-grid dd {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.82rem;
  word-break: break-all;
}

.loader {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
}
.error-msg {
  padding: 1rem 1.25rem;
  background: rgba(255, 107, 107, 0.1);
  color: var(--danger);
  border-radius: var(--radius);
  margin: 1rem 0;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  margin-top: auto;
  background: var(--bg-card);
}
.footer-grid {
  display: grid;
  gap: 1.5rem;
}
@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: minmax(200px, 300px) 1fr;
    align-items: start;
  }
}
.footer-ad .ad-placeholder {
  min-height: 250px;
}
.footer-meta p {
  margin: 0 0 0.75rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Admin */
.admin-body {
  max-width: 640px;
}
.admin-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.25rem;
}
.admin-card h2 {
  margin: 0 0 1rem;
  font-size: 1.1rem;
}
.form-group {
  margin-bottom: 1rem;
}
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: var(--text-muted);
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-elevated);
  color: var(--text);
  font-family: var(--font);
}
.form-group textarea {
  min-height: 80px;
  font-family: var(--mono);
  font-size: 0.85rem;
}
.form-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}