:root {
  --bg: #f3f6f9;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --primary: #0f766e;
  --primary-dark: #115e59;
  --border: #d1d5db;
}

* {
  box-sizing: border-box;
  font-family: "Segoe UI", "Helvetica Neue", sans-serif;
}

body {
  margin: 0;
  background: radial-gradient(circle at 10% 10%, #d1fae5 0%, var(--bg) 45%);
  color: var(--text);
}

.layout {
  max-width: 1200px;
  margin: 32px auto;
  padding: 0 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
  padding: 20px;
  margin-bottom: 16px;
}

.author-badge {
  border: 1px solid #99f6e4;
  background: #f0fdfa;
  border-radius: 10px;
  padding: 10px 12px;
  margin: 12px 0;
}

.author-badge p {
  margin: 6px 0;
}

.author-badge a,
.author-footer a {
  color: #0f766e;
  font-weight: 600;
}

.author-footer {
  border-top: 1px dashed var(--border);
  margin-top: 20px;
  padding-top: 12px;
}

.author-footer p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--muted);
}

.login-help {
  margin-top: 10px;
}

.link-button {
  background: transparent;
  color: var(--primary);
  padding: 0;
  border: none;
  text-decoration: underline;
  font-weight: 600;
}

.link-button:hover {
  background: transparent;
  color: var(--primary-dark);
}

.recovery-form {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--border);
}

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

.hidden {
  display: none;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.tabs-nav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 14px 0 18px;
}

.tab-btn {
  background: #e5e7eb;
  color: #111827;
  border: 1px solid #cbd5e1;
  font-weight: 600;
}

.tab-btn.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary-dark);
}

.tab-panel.tab-hidden {
  display: none;
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.inline-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 8px;
  margin-bottom: 10px;
}

.system-health-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.health-box {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  background: #f8fafc;
}

label {
  display: grid;
  gap: 6px;
  margin-bottom: 8px;
}

input,
select,
button {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
}

button {
  background: var(--primary);
  color: white;
  border: none;
  cursor: pointer;
}

button.secondary {
  background: #374151;
}

button:hover {
  background: var(--primary-dark);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th,
td {
  border-bottom: 1px solid var(--border);
  text-align: left;
  padding: 8px;
}

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

.toast {
  position: fixed;
  right: 16px;
  bottom: 16px;
  background: #111827;
  color: white;
  padding: 12px 14px;
  border-radius: 8px;
}

@media (max-width: 900px) {
  .grid {
    grid-template-columns: 1fr;
  }

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