*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}
h1, h2, h3, h4, h5, h6 { margin: 0 0 var(--space-2); font-weight: 600; line-height: 1.3; }
h1 { font-size: var(--text-2xl); }
h2 { font-size: var(--text-xl); }
h3 { font-size: var(--text-lg); }
h4 { font-size: var(--text-md); }
p { margin: 0 0 var(--space-3); }
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
small { font-size: var(--text-xs); color: var(--color-text-secondary); }
hr { border: none; border-top: 1px solid var(--color-border); margin: var(--space-4) 0; }
img { max-width: 100%; }
::selection { background: var(--color-primary-light); }

.container { max-width: 1440px; margin: 0 auto; padding: 0 var(--space-5); }
.text-muted { color: var(--color-text-muted); }
.text-secondary { color: var(--color-text-secondary); }
.text-danger { color: var(--color-danger); }
.text-success { color: var(--color-success); }
.font-mono { font-family: var(--font-mono); }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--space-1); } .gap-2 { gap: var(--space-2); } .gap-3 { gap: var(--space-3); } .gap-4 { gap: var(--space-4); }
.w-full { width: 100%; }
.mt-0 { margin-top: 0; } .mb-0 { margin-bottom: 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: inherit;
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1;
  padding: 10px 16px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
  white-space: nowrap;
  min-height: 40px;
}
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }
.btn-primary { background: var(--color-primary); border-color: var(--color-primary); color: var(--color-text-inverse); }
.btn-primary:hover:not(:disabled) { background: var(--color-primary-hover); border-color: var(--color-primary-hover); }
.btn-secondary { background: var(--color-surface); border-color: var(--color-border-strong); color: var(--color-text); }
.btn-secondary:hover:not(:disabled) { background: var(--color-surface-alt); }
.btn-ghost { background: transparent; border-color: transparent; color: var(--color-text-secondary); }
.btn-ghost:hover:not(:disabled) { background: var(--color-surface-alt); color: var(--color-text); }
.btn-danger { background: var(--color-danger); border-color: var(--color-danger); color: #fff; }
.btn-danger:hover:not(:disabled) { background: #b52f2f; }
.btn-danger-ghost { background: transparent; border-color: var(--color-border-strong); color: var(--color-danger); }
.btn-danger-ghost:hover:not(:disabled) { background: var(--color-danger-light); }
.btn-sm { min-height: 32px; padding: 6px 12px; font-size: var(--text-xs); border-radius: var(--radius-sm); }
.btn-lg { min-height: 48px; padding: 12px 20px; font-size: var(--text-base); }
.btn-block { width: 100%; }
.btn-icon { padding: 8px; min-width: 40px; }

/* ---------- Forms ---------- */
.form-group { margin-bottom: var(--space-4); }
.form-label { display: block; font-size: var(--text-sm); font-weight: 600; margin-bottom: var(--space-2); color: var(--color-text); }
.form-hint { font-size: var(--text-xs); color: var(--color-text-muted); margin-top: var(--space-1); }
.form-error { font-size: var(--text-xs); color: var(--color-danger); margin-top: var(--space-1); }
.form-row { display: flex; gap: var(--space-3); flex-wrap: wrap; }
.form-row > .form-group { flex: 1 1 200px; }

.input, .select, textarea.input {
  width: 100%;
  font-family: inherit;
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  min-height: 42px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.input::placeholder { color: var(--color-text-muted); }
.input:focus, .select:focus, textarea.input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}
.input.has-error, .select.has-error { border-color: var(--color-danger); }
.input-lg { min-height: 52px; font-size: var(--text-md); padding: 12px 16px; }
select.select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%235c6370'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 32px; }
.checkbox-row { display: flex; align-items: center; gap: var(--space-2); }
textarea.input { min-height: 90px; resize: vertical; }

/* ---------- Card ---------- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
}
.card-header { display: flex; align-items: center; justify-content: space-between; padding: var(--space-4) var(--space-5); border-bottom: 1px solid var(--color-border); gap: var(--space-3); flex-wrap: wrap; }
.card-header h2, .card-header h3 { margin: 0; }
.card-body { padding: var(--space-5); }
.card-compact .card-body { padding: var(--space-4); }

/* ---------- Badge ---------- */
.badge { display: inline-flex; align-items: center; gap: 4px; font-size: var(--text-xs); font-weight: 600; padding: 3px 10px; border-radius: var(--radius-full); line-height: 1.6; }
.badge-success { background: var(--color-success-light); color: var(--color-success); }
.badge-danger { background: var(--color-danger-light); color: var(--color-danger); }
.badge-warning { background: var(--color-warning-light); color: var(--color-warning); }
.badge-info { background: var(--color-info-light); color: var(--color-info); }
.badge-neutral { background: var(--color-surface-alt); color: var(--color-text-secondary); border: 1px solid var(--color-border); }

/* ---------- Table ---------- */
.table-wrap { overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--color-border); background: var(--color-surface); }
table.table { width: 100%; border-collapse: collapse; font-size: var(--text-sm); min-width: 640px; }
table.table th, table.table td { padding: var(--space-3) var(--space-4); text-align: left; border-bottom: 1px solid var(--color-border); }
table.table th { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.04em; color: var(--color-text-muted); font-weight: 600; background: var(--color-surface-alt); white-space: nowrap; }
table.table tbody tr:last-child td { border-bottom: none; }
table.table tbody tr:hover { background: var(--color-surface-alt); }
table.table td.actions { white-space: nowrap; text-align: right; }
table.table .cell-num { text-align: right; font-variant-numeric: tabular-nums; }

/* Responsive card-table: on small screens, JS toggles .table-as-cards */
.table-cards { display: none; }
.table-cards .row-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-4); margin-bottom: var(--space-3); }
.table-cards .row-card dl { margin: 0; display: grid; grid-template-columns: 1fr auto; gap: var(--space-1) var(--space-2); }
.table-cards .row-card dt { font-size: var(--text-xs); color: var(--color-text-muted); }
.table-cards .row-card dd { margin: 0; font-size: var(--text-sm); text-align: right; }
.table-cards .row-card .row-card-title { font-weight: 600; font-size: var(--text-base); margin-bottom: var(--space-2); grid-column: 1 / -1; text-align: left; }
.table-cards .row-card .row-card-actions { grid-column: 1 / -1; display: flex; gap: var(--space-2); margin-top: var(--space-3); }

@media (max-width: 720px) {
  .table-wrap.is-responsive { display: none; }
  .table-cards.is-responsive { display: block; }
}

/* ---------- Pagination ---------- */
.pagination { display: flex; align-items: center; gap: var(--space-1); flex-wrap: wrap; }
.pagination a, .pagination span { display: inline-flex; align-items: center; justify-content: center; min-width: 34px; height: 34px; padding: 0 8px; border-radius: var(--radius-sm); font-size: var(--text-sm); color: var(--color-text-secondary); border: 1px solid transparent; }
.pagination a:hover { background: var(--color-surface-alt); text-decoration: none; }
.pagination .active { background: var(--color-primary); color: #fff; font-weight: 600; }
.pagination .disabled { opacity: 0.4; pointer-events: none; }

/* ---------- Tabs ---------- */
.tabs { display: flex; gap: var(--space-1); border-bottom: 1px solid var(--color-border); overflow-x: auto; }
.tabs .tab { padding: var(--space-3) var(--space-4); font-size: var(--text-sm); font-weight: 600; color: var(--color-text-secondary); border-bottom: 2px solid transparent; cursor: pointer; white-space: nowrap; background: none; border-top: none; border-left: none; border-right: none; }
.tabs .tab.active { color: var(--color-primary); border-bottom-color: var(--color-primary); }

/* ---------- Dropdown ---------- */
.dropdown { position: relative; display: inline-block; }
.dropdown-menu { position: absolute; right: 0; top: calc(100% + 6px); min-width: 180px; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md); box-shadow: var(--shadow-md); padding: var(--space-2); z-index: 40; display: none; }
.dropdown-menu.open { display: block; }
.dropdown-menu a, .dropdown-menu button { display: flex; width: 100%; text-align: left; align-items: center; gap: var(--space-2); padding: 8px 10px; border-radius: var(--radius-sm); font-size: var(--text-sm); color: var(--color-text); background: none; border: none; cursor: pointer; }
.dropdown-menu a:hover, .dropdown-menu button:hover { background: var(--color-surface-alt); text-decoration: none; }
.dropdown-menu .divider { height: 1px; background: var(--color-border); margin: var(--space-2) 0; }

/* ---------- Modal ---------- */
.modal-backdrop { position: fixed; inset: 0; background: rgba(15, 18, 25, 0.5); display: none; align-items: center; justify-content: center; padding: var(--space-4); z-index: 100; }
.modal-backdrop.open { display: flex; }
.modal { background: var(--color-surface); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); width: 100%; max-width: 480px; max-height: calc(100vh - 2 * var(--space-4)); display: flex; flex-direction: column; }
.modal-lg { max-width: 720px; }
.modal-header { display: flex; align-items: center; justify-content: space-between; padding: var(--space-4) var(--space-5); border-bottom: 1px solid var(--color-border); }
.modal-header h3 { margin: 0; }
.modal-body { padding: var(--space-5); overflow-y: auto; }
.modal-footer { padding: var(--space-4) var(--space-5); border-top: 1px solid var(--color-border); display: flex; justify-content: flex-end; gap: var(--space-2); flex-wrap: wrap; }
.modal-close { background: none; border: none; cursor: pointer; color: var(--color-text-muted); font-size: 1.25rem; line-height: 1; padding: 4px; }

@media (max-width: 560px) {
  .modal-backdrop { padding: 0; align-items: flex-end; }
  .modal { max-width: 100%; width: 100%; border-radius: var(--radius-lg) var(--radius-lg) 0 0; max-height: 92vh; }
  .modal-backdrop.modal-fullscreen-mobile { align-items: stretch; }
  .modal-backdrop.modal-fullscreen-mobile .modal { border-radius: 0; max-height: 100vh; height: 100%; }
}

/* ---------- Drawer ---------- */
.drawer-backdrop { position: fixed; inset: 0; background: rgba(15, 18, 25, 0.5); display: none; z-index: 90; }
.drawer-backdrop.open { display: block; }
.drawer { position: fixed; top: 0; bottom: 0; left: 0; width: 260px; max-width: 84vw; background: var(--sidebar-bg); transform: translateX(-100%); transition: transform var(--transition-base); z-index: 95; display: flex; flex-direction: column; }
.drawer.open { transform: translateX(0); }
.drawer-right { left: auto; right: 0; transform: translateX(100%); background: var(--color-surface); }
.drawer-right.open { transform: translateX(0); }

/* ---------- Toast ---------- */
.toast-stack { position: fixed; top: var(--space-4); right: var(--space-4); z-index: 200; display: flex; flex-direction: column; gap: var(--space-2); max-width: 340px; }
.toast { background: var(--color-text); color: #fff; padding: 12px 16px; border-radius: var(--radius-md); font-size: var(--text-sm); box-shadow: var(--shadow-md); display: flex; align-items: flex-start; gap: var(--space-2); animation: toast-in 160ms ease; }
.toast-success { background: var(--color-success); }
.toast-danger { background: var(--color-danger); }
.toast-warning { background: var(--color-warning); color: #24160a; }
@keyframes toast-in { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: translateY(0); } }
@media (max-width: 560px) {
  .toast-stack { left: var(--space-3); right: var(--space-3); top: var(--space-3); max-width: none; }
}

/* ---------- Empty / Loading / Error states ---------- */
.state-block { text-align: center; padding: var(--space-8) var(--space-4); color: var(--color-text-secondary); }
.state-block .state-icon { font-size: 2rem; margin-bottom: var(--space-3); opacity: 0.6; }
.state-block h4 { color: var(--color-text); margin-bottom: var(--space-1); }
.state-block p { margin: 0; font-size: var(--text-sm); }
.spinner { width: 22px; height: 22px; border-radius: 50%; border: 3px solid var(--color-border); border-top-color: var(--color-primary); animation: spin 0.7s linear infinite; display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }
.skeleton { background: linear-gradient(90deg, var(--color-surface-alt) 25%, var(--color-border) 37%, var(--color-surface-alt) 63%); background-size: 400% 100%; animation: skeleton 1.4s ease infinite; border-radius: var(--radius-sm); }
@keyframes skeleton { 0% { background-position: 100% 50%; } 100% { background-position: 0 50%; } }

/* ---------- Confirm dialog reuses .modal ---------- */
.confirm-icon { width: 44px; height: 44px; border-radius: 50%; display: flex; align-items: center; justify-content: center; background: var(--color-danger-light); color: var(--color-danger); font-size: 1.25rem; margin-bottom: var(--space-3); }

/* ---------- Filter bar ---------- */
.filter-bar { display: flex; flex-wrap: wrap; gap: var(--space-3); align-items: flex-end; padding: var(--space-4) var(--space-5); border-bottom: 1px solid var(--color-border); }
.filter-bar .form-group { margin-bottom: 0; min-width: 140px; }

/* ---------- KPI ---------- */
.kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-4); }
.kpi-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-4) var(--space-5); }
.kpi-card .kpi-label { font-size: var(--text-xs); color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: var(--space-2); }
.kpi-card .kpi-value { font-size: var(--text-2xl); font-weight: 700; }
.kpi-card .kpi-sub { font-size: var(--text-xs); color: var(--color-text-secondary); margin-top: var(--space-1); }
@media (max-width: 1024px) { .kpi-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .kpi-grid { grid-template-columns: 1fr; } }

/* Utility: visually hide but keep for screen readers */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* Theme toggle switch */
.theme-toggle { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: var(--radius-md); border: 1px solid var(--color-border-strong); background: var(--color-surface); cursor: pointer; color: var(--color-text-secondary); }
.theme-toggle:hover { background: var(--color-surface-alt); }