/* ==========================================
   UI REDESIGN BATCH 0: DESIGN TOKENS + BASE
   ========================================== */

:root {
  --ui-color-bg: #f4f7fb;
  --ui-color-surface: #ffffff;
  --ui-color-surface-muted: #eef3fa;
  --ui-color-text: #0f1f38;
  --ui-color-text-muted: #5f718b;
  --ui-color-border: #d9e2ef;

  --ui-color-primary: #0b57d0;
  --ui-color-primary-strong: #0a47ab;
  --ui-color-primary-soft: #e8f0ff;

  --ui-color-accent: #ff7a1a;
  --ui-color-accent-strong: #e26400;
  --ui-color-accent-soft: #fff1e5;

  --ui-color-success: #12a562;
  --ui-color-success-soft: #e8f8ef;
  --ui-color-warning: #f0a411;
  --ui-color-warning-soft: #fff7dd;
  --ui-color-danger: #d94141;
  --ui-color-danger-soft: #ffecec;
  --ui-color-info: #1e8cd6;
  --ui-color-info-soft: #e8f5ff;

  --ui-radius-xs: 6px;
  --ui-radius-sm: 10px;
  --ui-radius-md: 14px;
  --ui-radius-lg: 20px;
  --ui-radius-xl: 28px;

  --ui-shadow-xs: 0 1px 2px rgba(15, 31, 56, 0.06);
  --ui-shadow-sm: 0 4px 14px rgba(15, 31, 56, 0.08);
  --ui-shadow-md: 0 12px 32px rgba(15, 31, 56, 0.1);
  --ui-shadow-lg: 0 20px 44px rgba(15, 31, 56, 0.14);

  --ui-space-1: 0.25rem;
  --ui-space-2: 0.5rem;
  --ui-space-3: 0.75rem;
  --ui-space-4: 1rem;
  --ui-space-5: 1.25rem;
  --ui-space-6: 1.5rem;
  --ui-space-8: 2rem;
  --ui-space-10: 2.5rem;
  --ui-space-12: 3rem;

  --ui-font-heading: "Montserrat", "Inter", "Segoe UI", sans-serif;
  --ui-font-body: "Inter", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

html,
body {
  background: var(--ui-color-bg);
  color: var(--ui-color-text);
}

body {
  font-family: var(--ui-font-body);
  line-height: 1.5;
}

h1,
h2,
h3,
h4,
h5,
h6,
.display-1,
.display-2,
.display-3,
.display-4 {
  font-family: var(--ui-font-heading);
  color: var(--ui-color-text);
}

a {
  color: var(--ui-color-primary);
}

a:hover {
  color: var(--ui-color-primary-strong);
}

/* ---------- Buttons ---------- */
.btn {
  border-radius: var(--ui-radius-sm);
  border: 1px solid transparent;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: all 0.18s ease;
  box-shadow: var(--ui-shadow-xs);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(180deg, var(--ui-color-primary) 0%, var(--ui-color-primary-strong) 100%);
  border-color: var(--ui-color-primary-strong);
}

.btn-warning,
.btn-accent {
  background: linear-gradient(180deg, var(--ui-color-accent) 0%, var(--ui-color-accent-strong) 100%);
  border-color: var(--ui-color-accent-strong);
  color: #ffffff;
}

.btn-outline-primary {
  color: var(--ui-color-primary);
  border-color: rgba(11, 87, 208, 0.35);
  background: #ffffff;
}

.btn-outline-primary:hover {
  color: var(--ui-color-primary-strong);
  background: var(--ui-color-primary-soft);
  border-color: rgba(11, 87, 208, 0.45);
}

/* ---------- Forms ---------- */
.form-control,
.form-select,
.form-check-input,
textarea.form-control {
  border-radius: var(--ui-radius-sm);
  border-color: var(--ui-color-border);
  background-color: #ffffff;
}

.form-control:focus,
.form-select:focus,
.form-check-input:focus {
  border-color: rgba(11, 87, 208, 0.6);
  box-shadow: 0 0 0 0.2rem rgba(11, 87, 208, 0.16);
}

.input-group-text {
  border-color: var(--ui-color-border);
  background: var(--ui-color-surface-muted);
}

/* ---------- Cards ---------- */
.card {
  border: 1px solid var(--ui-color-border);
  border-radius: var(--ui-radius-md);
  background: var(--ui-color-surface);
  box-shadow: var(--ui-shadow-sm);
}

.card-header {
  background: linear-gradient(180deg, #ffffff 0%, #f7faff 100%);
  border-bottom: 1px solid var(--ui-color-border);
}

/* ---------- Tables ---------- */
.table {
  --bs-table-bg: transparent;
  --bs-table-color: var(--ui-color-text);
  border-color: var(--ui-color-border);
}

.table thead th {
  border-bottom-width: 1px;
  border-color: var(--ui-color-border);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ui-color-text-muted);
  background: #f6f9ff;
}

.table tbody td {
  border-color: #e7edf7;
}

.table-hover > tbody > tr:hover > * {
  --bs-table-accent-bg: #f7faff;
}

/* ---------- Badge ---------- */
.badge {
  border-radius: 999px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.badge.bg-success {
  background: var(--ui-color-success-soft) !important;
  color: #0c7d4b !important;
}

.badge.bg-danger {
  background: var(--ui-color-danger-soft) !important;
  color: #a72a2a !important;
}

.badge.bg-warning {
  background: var(--ui-color-warning-soft) !important;
  color: #9c6706 !important;
}

.badge.bg-info {
  background: var(--ui-color-info-soft) !important;
  color: #0f6ca9 !important;
}

/* ---------- Alert ---------- */
.alert {
  border-radius: var(--ui-radius-sm);
  border-width: 1px;
}

.alert-success {
  border-color: #bde8ce;
  background: var(--ui-color-success-soft);
  color: #0f6f43;
}

.alert-danger {
  border-color: #f1c0c0;
  background: var(--ui-color-danger-soft);
  color: #8f2525;
}

.alert-warning {
  border-color: #f3dea5;
  background: var(--ui-color-warning-soft);
  color: #7b5605;
}

/* ---------- Modal ---------- */
.modal-content {
  border-radius: var(--ui-radius-md);
  border: 1px solid var(--ui-color-border);
  box-shadow: var(--ui-shadow-lg);
}

.modal-header,
.modal-footer {
  border-color: var(--ui-color-border);
}

/* ---------- Pagination ---------- */
.pagination .page-link {
  border-radius: var(--ui-radius-xs);
  margin: 0 2px;
  border-color: var(--ui-color-border);
  color: var(--ui-color-primary);
}

.pagination .page-item.active .page-link {
  background-color: var(--ui-color-primary);
  border-color: var(--ui-color-primary);
  color: #ffffff;
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  margin-bottom: 0;
}

.breadcrumb-item + .breadcrumb-item::before {
  color: #9eb0ca;
}

.breadcrumb-item,
.breadcrumb-item a {
  color: var(--ui-color-text-muted);
}

.breadcrumb-item.active {
  color: var(--ui-color-text);
  font-weight: 600;
}

/* ---------- Empty / Loading / Error state ---------- */
.ui-empty-state,
.ui-loading-state,
.ui-error-state {
  background: #ffffff;
  border: 1px dashed var(--ui-color-border);
  border-radius: var(--ui-radius-md);
  padding: var(--ui-space-10);
  text-align: center;
  color: var(--ui-color-text-muted);
}

.ui-empty-state .title,
.ui-loading-state .title,
.ui-error-state .title {
  display: block;
  margin-bottom: var(--ui-space-2);
  color: var(--ui-color-text);
  font-family: var(--ui-font-heading);
  font-size: 1.1rem;
}

.ui-loading-spinner {
  width: 2.25rem;
  height: 2.25rem;
  margin: 0 auto var(--ui-space-4);
  border: 3px solid #d8e4fb;
  border-top-color: var(--ui-color-primary);
  border-radius: 999px;
  animation: ui-spin 0.85s linear infinite;
}

@keyframes ui-spin {
  to {
    transform: rotate(360deg);
  }
}