:root {
  color-scheme: light;
  --bg: #f1f5f9;
  --surface: #ffffff;
  --border: #dbe3ee;
  --text: #0f172a;
  --muted: #475569;
  --primary: #0b57d0;
  --primary-hover: #0947aa;
  --danger: #b42318;
  --danger-hover: #8e1b13;
  --success-bg: #e8f5ee;
  --success-text: #1f6f43;
  --error-bg: #fdeced;
  --error-text: #9f202a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(circle at top right, #dbe8ff 0%, var(--bg) 45%);
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
}

.page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
}

.card {
  width: min(100%, 980px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.25rem;
  box-shadow: 0 12px 40px rgba(15, 23, 42, 0.08);
}

.card-header {
  margin-bottom: 0.5rem;
}

h1,
h2 {
  margin: 0 0 0.4rem;
}

.card-header p {
  margin: 0;
  color: var(--muted);
}

.message {
  min-height: 1.5rem;
  margin: 0.75rem 0;
  padding: 0.6rem 0.75rem;
  border-radius: 10px;
  opacity: 0;
  transition: opacity 120ms linear;
}

.message.show {
  opacity: 1;
}

.message.info {
  background: #eaf1ff;
  color: #23438d;
}

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

.message.error {
  background: var(--error-bg);
  color: var(--error-text);
}

.grid-form {
  display: grid;
  gap: 0.75rem;
}

.grid-form.inline {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  align-items: end;
}

label {
  display: grid;
  gap: 0.35rem;
  font-weight: 600;
  font-size: 0.95rem;
}

input,
button {
  font: inherit;
}

input {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.65rem 0.75rem;
}

button {
  border: 0;
  border-radius: 10px;
  padding: 0.65rem 0.9rem;
  cursor: pointer;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
}

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

button.secondary {
  background: #1e293b;
}

button.secondary:hover {
  background: #0f172a;
}

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

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

.row-between {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
}

.row-actions {
  display: flex;
  gap: 0.5rem;
}

.table-wrap {
  margin-top: 0.9rem;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 12px;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 670px;
}

th,
td {
  text-align: left;
  padding: 0.75rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

thead th {
  background: #f8fafc;
  font-size: 0.86rem;
  color: var(--muted);
}

tbody tr:last-child td {
  border-bottom: none;
}

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

@media (max-width: 680px) {
  .card {
    padding: 1rem;
  }
}