:root {
  color-scheme: light;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text-color);
  background: var(--page-bg);
  line-height: 1.6;
  --page-bg: #f8fafc;
  --surface: #ffffff;
  --surface-secondary: #f1f5f9;
  --text-color: #1f2937;
  --text-muted: #4b5563;
  --border-color: rgba(148, 163, 184, 0.2);
  --border-strong: rgba(148, 163, 184, 0.25);
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --button-secondary: #e2e8f0;
  --danger: #dc2626;
  --success: #166534;
  --success-bg: #dcfce7;
  --alert-bg: #fee2e2;
  --alert-text: #0c4a6e;
  --badge-alert-bg: #fee2e2;
  --badge-alert-color: #b91c1c;
  --badge-success-bg: #dcfce7;
  --badge-success-color: #166534;
  --input-bg: #ffffff;
  --input-color: #111827;
  --input-border: rgba(148, 163, 184, 0.32);
  --topbar-bg: #ffffff;
  --card-bg: #f8fafc;
  --panel-shadow: 0 24px 80px rgba(15, 23, 42, 0.04);
}

.dark-mode {
  --page-bg: #020617;
  --surface: #111827;
  --surface-secondary: #111827;
  --text-color: #e2e8f0;
  --text-muted: #cbd5e1;
  --border-color: rgba(148, 163, 184, 0.12);
  --border-strong: rgba(148, 163, 184, 0.15);
  --primary: #60a5fa;
  --primary-hover: #3b82f6;
  --button-secondary: #1f2937;
  --danger: #fca5a5;
  --success: #86efac;
  --success-bg: #064e3b;
  --alert-bg: #1f2937;
  --alert-text: #e2e8f0;
  --badge-alert-bg: #7f1d1d;
  --badge-alert-color: #fee2e2;
  --badge-success-bg: #064e3b;
  --badge-success-color: #d1fae5;
  --input-bg: #111827;
  --input-color: #e2e8f0;
  --input-border: rgba(148, 163, 184, 0.22);
  --topbar-bg: #111827;
  --card-bg: #111827;
  --panel-shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--page-bg);
  color: var(--text-color);
}

img {
  max-width: 100%;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

button,
input,
textarea,
select {
  font: inherit;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem 2rem;
  background: var(--topbar-bg);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar__brand a {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-color);
}

.topbar__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.topbar__nav a {
  padding: 0.65rem 1rem;
  border-radius: 999px;
  background: var(--surface-secondary);
  color: var(--text-color);
}

.page {
  padding: 2rem;
  max-width: 1180px;
  margin: 0 auto;
}

.page__inner {
  width: 100%;
  margin: 0 auto;
}

.panel {
  background: var(--surface);
  border: 1px solid rgba(148, 163, 184, 0.16);
  border-radius: 24px;
  padding: 1.75rem;
  box-shadow: var(--panel-shadow);
}

.panel__header {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.panel__header--spread {
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
}

.panel__section {
  margin-top: 1.75rem;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--text-color);
}

p {
  margin: 0;
  color: var(--text-muted);
}

.grid {
  display: grid;
  gap: 1rem;
}

.grid--cards {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.card {
  padding: 1.35rem;
  border-radius: 20px;
  background: var(--card-bg);
  border: 1px solid rgba(148, 163, 184, 0.18);
}

.card--primary {
  background: #eff6ff;
}

.card--accent {
  background: #ede9fe;
}

.card--muted {
  background: #f8fafc;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
  min-width: 640px;
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.table-responsive table {
  min-width: 640px;
}

thead th {
  text-align: left;
  color: var(--text-color);
  font-weight: 600;
  padding: 1rem 0.75rem;
  border-bottom: 1px solid var(--border-strong);
}

tbody tr {
  border-bottom: 1px solid rgba(148, 163, 184, 0.12);
}

td {
  padding: 1rem 0.75rem;
  color: var(--text-muted);
  vertical-align: top;
}

button,
button[type="submit"],
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: none;
  border-radius: 12px;
  padding: 0.85rem 1rem;
  background: var(--primary);
  color: #ffffff;
  cursor: pointer;
  transition: transform 0.16s ease, background-color 0.16s ease;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.actions .button,
.actions button {
  margin: 0;
}

.button:hover,
button:hover,
button[type="submit"]:hover {
  transform: translateY(-1px);
  background: #1d4ed8;
}

.button--secondary {
  background: var(--button-secondary);
  color: var(--text-color);
}

.button--danger {
  background: var(--danger);
}

.button--small {
  padding: 0.55rem 0.85rem;
  font-size: 0.95rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
}

.badge--alert {
  background: #fee2e2;
  color: #b91c1c;
}

.badge--success {
  background: #dcfce7;
  color: #166534;
}

.form-grid {
  display: grid;
  gap: 1rem;
}

label {
  font-weight: 600;
  color: var(--text-color);
}

.panel-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  justify-content: flex-end;
}

.search-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.search-bar input {
  min-width: 220px;
  flex: 1 1 240px;
}

input,
textarea,
select {
  width: 100%;
  min-height: 44px;
  padding: 0.95rem 1rem;
  border: 1px solid var(--input-border);
  border-radius: 14px;
  background: var(--input-bg);
  color: var(--input-color);
}

textarea {
  resize: vertical;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: flex-end;
}

.inline-form {
  display: inline;
}

.alert {
  padding: 1rem 1.2rem;
  margin-bottom: 1.5rem;
  border-radius: 16px;
  background: var(--alert-bg);
  color: var(--alert-text);
  border: 1px solid var(--border-strong);
}

.badge--alert {
  background: var(--badge-alert-bg);
  color: var(--badge-alert-color);
}

.badge--success {
  background: var(--badge-success-bg);
  color: var(--badge-success-color);
}

.footer {
  padding: 1.5rem 2rem;
  text-align: center;
  color: var(--text-muted);
}

@media (max-width: 820px) {
  .topbar {
    flex-direction: column;
    align-items: stretch;
    padding: 1rem;
  }

  .topbar__nav {
    width: 100%;
    justify-content: flex-start;
  }

  .topbar__nav a {
    flex: 1 1 auto;
    text-align: center;
  }

  .panel__header--spread {
    flex-direction: column;
    gap: 1rem;
  }

  .form-actions {
    justify-content: stretch;
  }

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

  thead th,
  td {
    padding: 0.85rem 0.5rem;
  }

  .button,
  button,
  button[type="submit"] {
    width: 100%;
  }
}