:root {
  --lw-primary: #335CA6;
  --lw-primary-contrast: #ffffff;

  --lw-bg: #f7f9fc;
  --lw-text: #202533;
  --lw-muted: #6b7280;
  --lw-card: #ffffff;
  --lw-border: #e5e7eb;
  --lw-focus: rgba(51, 92, 166, 0.25);

  --lw-radius: 14px;

  /* Optional, used in dark mode hovers */
  --lw-transition: 120ms ease;
}

html, body { height: 100%; }

body {
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  background: var(--lw-bg);
  color: var(--lw-text);
  transition: background-color var(--lw-transition), color var(--lw-transition);
}

.navbar {
  background: var(--lw-card);
  border-bottom: 1px solid var(--lw-border);
  transition: background-color var(--lw-transition), border-color var(--lw-transition);
}
.navbar-brand {
  font-weight: 700;
  color: var(--lw-primary) !important;
  letter-spacing: .3px;
}

.btn-primary {
  background: var(--lw-primary);
  border-color: var(--lw-primary);
  color: var(--lw-primary-contrast);
  transition: filter var(--lw-transition), background-color var(--lw-transition), border-color var(--lw-transition);
}
.btn-primary:hover { filter: brightness(1.05); }
.btn-primary:focus { box-shadow: 0 0 0 .2rem var(--lw-focus); }

.btn-outline-primary {
  color: var(--lw-primary);
  border-color: var(--lw-primary);
  transition: background-color var(--lw-transition), color var(--lw-transition), border-color var(--lw-transition);
}
.btn-outline-primary:hover {
  background: rgba(51, 92, 166, 0.12);
  color: var(--lw-primary);
  border-color: var(--lw-primary);
}

.lw-card {
  background: var(--lw-card);
  border: 1px solid var(--lw-border);
  border-radius: var(--lw-radius);
  box-shadow: 0 10px 24px rgba(16,24,40,.04), 0 2px 6px rgba(16,24,40,.06);
  transition: background-color var(--lw-transition), border-color var(--lw-transition), box-shadow var(--lw-transition);
}

.lw-link {
  color: var(--lw-primary);
  text-decoration: none;
  transition: color var(--lw-transition), opacity var(--lw-transition);
}
.lw-link:hover { text-decoration: underline; }

.form-control:focus,
.form-select:focus {
  border-color: var(--lw-primary);
  box-shadow: 0 0 0 .2rem var(--lw-focus);
}

.flash-container { position: relative; z-index: 1; }

.footer {
  color: var(--lw-muted);
  font-size: 0.9rem;
  border-top: 1px solid var(--lw-border);
  background: var(--lw-card);
  transition: background-color var(--lw-transition), border-color var(--lw-transition), color var(--lw-transition);
}

/* --- Theme: Dark mode ---------------------- */
body.theme-dark {
  color-scheme: dark;

  /* Keep your brand, but tune focus */
  --lw-primary: #335CA6;
  --lw-primary-contrast: #ffffff;
  --lw-focus: rgba(51, 92, 166, 0.35);

  --lw-bg: #1E1F22;          /* app background */
  --lw-card: #2B2D31;        /* primary surface (cards, navbar) */
  --lw-elevated: #313338;    /* elevated surface (dropdowns, menus) */
  --lw-input: #1E1F22;       /* input fields */
  --lw-text: #EDEFF1;        /* primary text */
  --lw-muted: #B5BAC1;       /* secondary/muted text */
  --lw-border: rgba(240, 244, 248, 0.08);    /* subtle hairline */
  --lw-border-strong: rgba(240, 244, 248, 0.14);

  /* Bootstrap tokens -> inherit dark palette */
  --bs-body-bg: var(--lw-bg);
  --bs-body-color: var(--lw-text);
  --bs-secondary-color: var(--lw-muted);
  --bs-border-color: var(--lw-border);
  --bs-heading-color: #F2F3F5;
  --bs-link-color: var(--lw-primary);
  --bs-link-hover-color: #7ba0e0;
  --bs-navbar-color: var(--lw-text);
  --bs-navbar-brand-color: var(--lw-primary);
  --bs-card-bg: var(--lw-card);
  --bs-card-color: var(--lw-text);
}

body.theme-dark,
body.theme-light {
  background: var(--lw-bg);
  color: var(--lw-text);
}

/* Navbar / nav items */
body.theme-dark .navbar {
  background: var(--lw-card);
  border-bottom: 1px solid var(--lw-border-strong);
}
body.theme-dark .navbar-brand { color: var(--lw-primary) !important; }
body.theme-dark .nav-link {
  color: var(--lw-muted) !important;
  transition: color var(--lw-transition), opacity var(--lw-transition), background-color var(--lw-transition);
}
body.theme-dark .nav-link:hover,
body.theme-dark .nav-link:focus {
  color: var(--lw-text) !important;
}
body.theme-dark .navbar-toggler { border-color: var(--lw-border); }
body.theme-dark .navbar-toggler-icon { filter: invert(1) opacity(0.75); }

/* Cards & subtle elevation */
body.theme-dark .lw-card {
  background: var(--lw-card);
  border: 1px solid var(--lw-border);
  color: var(--lw-text);
  box-shadow:
    0 8px 24px rgba(0,0,0,0.35),
    0 0 0 1px rgba(255,255,255,0.04) inset;
}
body.theme-dark .lw-card:hover {
  box-shadow:
    0 10px 28px rgba(0,0,0,0.38),
    0 0 0 1px rgba(255,255,255,0.05) inset;
}

/* Forms */
body.theme-dark .form-control,
body.theme-dark .form-select,
body.theme-dark .form-check-input {
  background-color: var(--lw-input);
  color: var(--lw-text);
  border-color: var(--lw-border);
}
body.theme-dark .form-control::placeholder { color: var(--lw-muted); opacity: 1; }
body.theme-dark .form-control:focus,
body.theme-dark .form-select:focus {
  background-color: var(--lw-input);
  border-color: var(--lw-primary);
  box-shadow: 0 0 0 .2rem var(--lw-focus), 0 0 0 1px var(--lw-primary);
}

/* Buttons */
body.theme-dark .btn-primary {
  background: var(--lw-primary);
  border-color: var(--lw-primary);
  color: var(--lw-primary-contrast);
}
body.theme-dark .btn-primary:hover { filter: brightness(1.08); }
body.theme-dark .btn-primary:active { filter: brightness(0.98); }

body.theme-dark .btn-outline-primary {
  color: var(--lw-primary);
  border-color: var(--lw-primary);
}
body.theme-dark .btn-outline-primary:hover {
  background: rgba(51, 92, 166, 0.18);
  color: var(--lw-primary);
  border-color: var(--lw-primary);
}
body.theme-dark .btn:focus { box-shadow: 0 0 0 .2rem var(--lw-focus); }

/* Links */
body.theme-dark .lw-link { color: var(--lw-primary); }
body.theme-dark .lw-link:hover { color: #7ba0e0; }

/* Tables */
body.theme-dark table,
body.theme-dark .table {
  color: var(--lw-text);
  --bs-table-bg: transparent;
  --bs-table-striped-color: var(--lw-text);
  --bs-table-striped-bg: rgba(255,255,255,0.03);
  --bs-table-hover-color: var(--lw-text);
  --bs-table-hover-bg: rgba(255,255,255,0.04);
  border-color: var(--lw-border);
}
body.theme-dark .table thead th {
  color: #F2F3F5;
  background: var(--lw-elevated);
  border-bottom-color: var(--lw-border-strong);
}
body.theme-dark .table tbody tr + tr { border-top: 1px solid var(--lw-border); }

/* Dropdowns / Menus / Modals */
body.theme-dark .dropdown-menu,
body.theme-dark .modal-content,
body.theme-dark .list-group,
body.theme-dark .offcanvas {
  background: var(--lw-elevated);
  color: var(--lw-text);
  border: 1px solid var(--lw-border);
}
body.theme-dark .dropdown-item {
  color: var(--lw-text);
  transition: background-color var(--lw-transition), color var(--lw-transition);
}
body.theme-dark .dropdown-item:hover,
body.theme-dark .dropdown-item:focus {
  background: rgba(255,255,255,0.05);
  color: var(--lw-text);
}

/* Badges, inputs, helpers */
body.theme-dark .badge { background: rgba(255,255,255,0.08); color: var(--lw-text); }
body.theme-dark .input-group-text { background: var(--lw-elevated); color: var(--lw-muted); border-color: var(--lw-border); }
body.theme-dark .text-muted { color: var(--lw-muted) !important; }

/* Pagination */
body.theme-dark .page-link {
  background: transparent;
  color: var(--lw-muted);
  border-color: var(--lw-border);
  transition: background-color var(--lw-transition), color var(--lw-transition), border-color var(--lw-transition);
}
body.theme-dark .page-link:hover { color: var(--lw-text); background: rgba(255,255,255,0.05); }
body.theme-dark .page-item.active .page-link {
  background: var(--lw-primary);
  border-color: var(--lw-primary);
  color: var(--lw-primary-contrast);
}

/* Alerts / Toasts */
body.theme-dark .alert {
  background: rgba(255,255,255,0.06);
  border-color: var(--lw-border-strong);
  color: var(--lw-text);
}
body.theme-dark .toast {
  background: var(--lw-elevated);
  color: var(--lw-text);
  border-color: var(--lw-border);
}

/* Scrollbars (WebKit) */
body.theme-dark *::-webkit-scrollbar { width: 12px; height: 12px; }
body.theme-dark *::-webkit-scrollbar-track { background: transparent; }
body.theme-dark *::-webkit-scrollbar-thumb {
  background-color: rgba(255,255,255,0.16);
  border-radius: 10px;
  border: 3px solid transparent;
  background-clip: content-box;
}
body.theme-dark *::-webkit-scrollbar-thumb:hover { background-color: rgba(255,255,255,0.25); }