:root {
  --bg: #f4f6f8;
  --surface: #ffffff;
  --surface-border: #d9e0e7;
  --text: #171717;
  --text-secondary: #4b5563;
  --primary: #171717;
  --primary-hover: #2d2d2d;
  --danger: #b42318;
  --focus: #2563eb;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Inter", "Segoe UI", "Roboto", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

.admin-shell {
  width: min(960px, 100%);
  margin: 0 auto;
  padding: 24px 16px 40px;
  display: grid;
  gap: 16px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 20px;
}

.hidden {
  display: none;
}

h1,
h2,
h3 {
  margin: 0 0 8px;
}

h1 {
  font-size: 1.5rem;
}

h2 {
  font-size: 1.25rem;
}

h3 {
  margin-top: 18px;
  font-size: 1rem;
}

.subtitle {
  margin: 0 0 16px;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

form {
  display: grid;
  gap: 12px;
}

label {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

input,
select,
button {
  min-height: 44px;
  border-radius: 10px;
  border: 1px solid #c5ced8;
  font-size: 0.95rem;
}

input,
select {
  padding: 10px 12px;
  color: var(--text);
  background: #fff;
}

input:focus-visible,
select:focus-visible,
button:focus-visible {
  outline: 2px solid transparent;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.25);
  border-color: var(--focus);
}

button {
  padding: 0 16px;
  background: var(--primary);
  color: #fff;
  border: none;
  cursor: pointer;
  transition: background-color 200ms ease, transform 200ms ease;
}

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

button:active {
  transform: translateY(1px);
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.secondary-btn {
  background: #fff;
  color: var(--text);
  border: 1px solid #c5ced8;
}

.secondary-btn:hover {
  background: #f7f8fa;
}

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

.domain-row {
  margin-top: 8px;
  margin-bottom: 12px;
  display: grid;
  gap: 8px;
}

.domain-actions {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.field {
  display: grid;
  gap: 6px;
}

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

.checkbox-field {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 30px;
}

.checkbox-field input {
  min-height: auto;
  width: 18px;
  height: 18px;
}

.checkbox-field label {
  margin: 0;
}

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

.status-card {
  background: #101828;
  color: #f8fafc;
}

#status-text {
  margin: 0;
  min-height: 24px;
}

#status-text[data-level="error"] {
  color: #fda29b;
}

#status-text[data-level="success"] {
  color: #75e0a7;
}

@media (max-width: 768px) {
  .card {
    padding: 16px;
  }

  .panel-header {
    flex-direction: column;
    align-items: stretch;
  }

  .domain-actions {
    grid-template-columns: 1fr;
  }

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

  .checkbox-field {
    padding-top: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}