:root {
  --color-primary: #2c5f8d;
  --color-primary-dark: #21496c;
  --color-accent: #d4af37;
  --color-bg: #faf9f5;
  --color-surface: #ffffff;
  --color-border: #dedbd2;
  --color-text: #1f2933;
  --color-muted: #667085;
  --color-danger: #b42318;
  --color-success: #027a48;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;

  --font-base: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-base);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
}

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

a:hover {
  text-decoration: underline;
}

/* Layout */

.app-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-header {
  background: var(--color-primary);
  color: white;
  padding: var(--space-4) var(--space-6);
  box-shadow: var(--shadow-sm);
}

.app-header h1 {
  margin: 0;
  font-size: 1.35rem;
}

.app-main {
  width: min(1100px, 100%);
  margin: 0 auto;
  padding: var(--space-6);
}

.page-title {
  margin: 0 0 var(--space-2);
  font-size: 1.75rem;
}

.page-intro {
  margin: 0 0 var(--space-6);
  color: var(--color-muted);
}

/* Cards */

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
}

.card-header {
  margin-bottom: var(--space-4);
}

.card-title {
  margin: 0;
  font-size: 1.2rem;
}

.card-subtitle {
  margin: var(--space-1) 0 0;
  color: var(--color-muted);
  font-size: 0.95rem;
}

/* Forms */

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-field.full {
  grid-column: 1 / -1;
}

label {
  font-weight: 600;
  font-size: 0.95rem;
}

input,
select,
textarea {
  width: 100%;
  font: inherit;
  color: var(--color-text);
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.65rem 0.75rem;
}

input:focus,
select:focus,
textarea:focus {
  outline: 3px solid rgba(44, 95, 141, 0.18);
  border-color: var(--color-primary);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

.help-text {
  color: var(--color-muted);
  font-size: 0.875rem;
}

.error-text {
  color: var(--color-danger);
  font-size: 0.875rem;
}

/* Buttons */

.button-row {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-top: var(--space-6);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  padding: 0.65rem 1rem;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  text-decoration: none;
}

.btn-secondary {
  background: white;
  color: var(--color-primary);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  text-decoration: none;
}

.btn-accent {
  background: var(--color-accent);
  color: #1f2933;
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

/* Tables */

.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: white;
}

table {
  width: 100%;
  border-collapse: collapse;
}

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

th {
  background: #f3f5f7;
  font-weight: 700;
}

tr:last-child td {
  border-bottom: 0;
}

/* Status badges */

.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 0.2rem 0.55rem;
  font-size: 0.8rem;
  font-weight: 700;
}

.badge-success {
  background: #ecfdf3;
  color: var(--color-success);
}

.badge-danger {
  background: #fef3f2;
  color: var(--color-danger);
}

.badge-muted {
  background: #f2f4f7;
  color: var(--color-muted);
}

/* Alerts */

.alert {
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin-bottom: var(--space-4);
  border: 1px solid var(--color-border);
}

.alert-info {
  background: #eef6ff;
  border-color: #b9dcff;
}

.alert-danger {
  background: #fef3f2;
  border-color: #fecdca;
  color: var(--color-danger);
}

.alert-success {
  background: #ecfdf3;
  border-color: #abefc6;
  color: var(--color-success);
}

/* Utilities */

.mt-0 {
  margin-top: 0;
}
.mt-4 {
  margin-top: var(--space-4);
}
.mb-0 {
  margin-bottom: 0;
}
.mb-4 {
  margin-bottom: var(--space-4);
}

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

.text-right {
  text-align: right;
}

/* Responsive */

@media (max-width: 700px) {
  .app-main {
    padding: var(--space-4);
  }

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

  .card {
    padding: var(--space-4);
  }

  .button-row {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}