/* ==========================================================================
   تم سراسری — مدیریت IT
   روی Bootstrap 5 اعمال می‌شود تا همه‌ی صفحات ظاهر یکدست و مدرن داشته باشند.
   ========================================================================== */

:root {
  --brand-900: #082d4d;
  --brand-800: #0a355b;
  --brand-700: #0b416f;
  --brand-600: #0f5a9c;
  --brand-500: #1a73c8;
  --brand-100: #e6f0fb;
  --brand-50:  #f2f7fd;

  --accent: #14b8a6;
  --accent-soft: #e0f7f4;

  --success: #16a34a;  --success-soft: #e7f7ed;
  --warning: #d97706;  --warning-soft: #fff4e0;
  --danger:  #dc2626;  --danger-soft:  #fdeaea;
  --info:    #0891b2;  --info-soft:    #e3f6fa;
  --violet:  #7c3aed;  --violet-soft:  #f1eafe;

  --bg: #f3f6fb;
  --surface: #ffffff;
  --surface-2: #f8fafc;
  --border: #e3e9f2;
  --text: #1e293b;
  --text-muted: #64748b;

  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 22px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, .05), 0 1px 3px rgba(15, 23, 42, .04);
  --shadow: 0 4px 16px rgba(15, 23, 42, .06), 0 1px 3px rgba(15, 23, 42, .05);
  --shadow-lg: 0 14px 40px rgba(15, 23, 42, .12);

  --heading: #0f2744;
  --label: #334155;
  --link: #0f5a9c;
  --surface-3: #eef2f7;
  --input-bg: #ffffff;
  --input-border: #d5dde9;
  --topbar-bg: rgba(255, 255, 255, .85);
  --success-text: #166534; --danger-text: #991b1b; --warning-text: #92400e; --info-text: #155e75;
  color-scheme: light;

  --sidebar-w: 272px;
  --sidebar-w-collapsed: 84px;
  --topbar-h: 68px;

  --bs-primary: var(--brand-600);
  --bs-primary-rgb: 15, 90, 156;
  --bs-body-font-family: 'Vazirmatn', Tahoma, Arial, sans-serif;
  --bs-body-color: var(--text);
  --bs-border-color: var(--border);
  --bs-border-radius: var(--radius-sm);
}

* { -webkit-tap-highlight-color: transparent; }

html { scroll-behavior: smooth; }

body {
  background:
    radial-gradient(900px 500px at 100% -5%, rgba(26, 115, 200, .10), transparent 60%),
    radial-gradient(700px 420px at 0% 0%, rgba(20, 184, 166, .08), transparent 60%),
    var(--bg);
  background-attachment: fixed;
  color: var(--text);
  font-family: 'Vazirmatn', Tahoma, Arial, sans-serif;
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 { color: var(--heading); letter-spacing: -.1px; }
h2 { font-size: 1.55rem; }
.text-muted { color: var(--text-muted) !important; }
a { text-decoration: none; }
::selection { background: var(--brand-100); }

/* ---------- Scrollbar ---------- */
* { scrollbar-width: thin; scrollbar-color: #c5d2e3 transparent; }
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-thumb { background: #c5d2e3; border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: #a9bad1; }

/* ---------- Layout ---------- */
.sidebar {
  width: var(--sidebar-w);
  background:
    radial-gradient(900px 300px at 100% -10%, rgba(26, 115, 200, .35), transparent 60%),
    linear-gradient(185deg, var(--brand-700) 0%, var(--brand-800) 55%, var(--brand-900) 100%);
  border-left: 0;
  box-shadow: -12px 0 40px rgba(8, 45, 77, .18);
  padding: 18px 14px 24px;
  display: flex;
  flex-direction: column;
}

.main-content {
  margin-right: var(--sidebar-w);
  min-height: 100vh;
  transition: margin .25s ease;
}
html[dir="ltr"] .main-content { margin-right: 0; margin-left: var(--sidebar-w); }
html[dir="ltr"] .sidebar { right: auto; left: 0; }

.main-content.sidebar-collapsed { margin-right: var(--sidebar-w-collapsed); }
html[dir="ltr"] .main-content.sidebar-collapsed { margin-left: var(--sidebar-w-collapsed); margin-right: 0; }
.sidebar.collapsed { width: var(--sidebar-w-collapsed); }

.sidebar .brand {
  display: flex; align-items: center; gap: 12px; text-align: right;
  padding: 6px 8px 18px; margin-bottom: 6px;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
}
.sidebar .brand .brand-logo {
  width: 46px; height: 46px; border-radius: 14px; flex-shrink: 0;
  background: rgba(255, 255, 255, .95); padding: 5px; object-fit: contain;
  box-shadow: 0 8px 20px rgba(0, 0, 0, .22);
}
.sidebar .brand h5 { font-size: 16px; font-weight: 800; color: #fff; margin: 0; }
.sidebar .brand small { margin: 2px 0 0; font-size: 11.5px; color: rgba(255, 255, 255, .65); }
.sidebar.collapsed .brand { justify-content: center; padding-inline: 0; }
.sidebar.collapsed .brand .brand-text { display: none; }

.sidebar .section-title {
  padding: 18px 12px 6px; font-size: 11.5px; font-weight: 700;
  letter-spacing: .6px; color: rgba(255, 255, 255, .4); text-transform: uppercase;
}
.sidebar .section-title::before { display: none; }
.sidebar.collapsed .section-title { font-size: 0; padding: 8px 0; border-top: 1px solid rgba(255,255,255,.08); margin-top: 8px; }

.sidebar a {
  min-height: 44px; padding: 7px 10px; margin: 3px 0; gap: 11px;
  border-radius: 13px; font-size: 14px; color: rgba(255, 255, 255, .8);
}
.sidebar a:hover { transform: none; background: rgba(255, 255, 255, .09); box-shadow: none; border-color: transparent; }
.sidebar a.active {
  background: linear-gradient(90deg, rgba(255, 255, 255, .2), rgba(255, 255, 255, .06));
  color: #fff; font-weight: 700; border-color: rgba(255, 255, 255, .1);
  box-shadow: inset -3px 0 0 var(--accent);
}
html[dir="ltr"] .sidebar a.active { box-shadow: inset 3px 0 0 var(--accent); }
.sidebar .menu-icon { width: 32px; height: 32px; border-radius: 10px; font-size: 16px; background: rgba(255, 255, 255, .08); }
.sidebar a.active .menu-icon { background: rgba(255, 255, 255, .18); }

.sidebar .sidebar-footer { margin-top: auto; padding-top: 14px; border-top: 1px solid rgba(255, 255, 255, .1); }
.sidebar .logout-btn {
  width: 100%; display: flex; align-items: center; gap: 11px;
  background: rgba(220, 38, 38, .12); border: 1px solid rgba(248, 113, 113, .25);
  color: #fecaca; min-height: 44px; padding: 7px 10px; border-radius: 13px;
  font-family: inherit; font-size: 14px; font-weight: 600; cursor: pointer; transition: .2s;
}
.sidebar .logout-btn:hover { background: rgba(220, 38, 38, .28); color: #fff; }
.sidebar .logout-btn .menu-icon { background: rgba(255, 255, 255, .08); }
.sidebar.collapsed .logout-btn .menu-text { display: none; }

/* ---------- Topbar ---------- */
.topbar {
  height: var(--topbar-h); padding: 0 28px; gap: 16px;
  background: var(--topbar-bg); backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--border); box-shadow: none;
  position: sticky; top: 0; z-index: 900;
}
.topbar > strong { font-size: 15px; font-weight: 700; color: var(--link); }
.quick-search-form { flex: 0 1 440px; margin-inline: 12px; }
.quick-search-form .input-group { box-shadow: var(--shadow-sm); border-radius: 12px; }
.quick-search-form .form-control {
  background: var(--surface-2); border-color: var(--border);
  border-radius: 0 12px 12px 0; height: 42px;
}
html[dir="ltr"] .quick-search-form .form-control { border-radius: 12px 0 0 12px; }
.quick-search-form .btn { border-radius: 12px 0 0 12px; height: 42px; padding-inline: 16px; }
html[dir="ltr"] .quick-search-form .btn { border-radius: 0 12px 12px 0; }
.user-chip {
  display: flex; align-items: center; gap: 10px; padding: 5px 14px 5px 6px;
  border: 1px solid var(--border); border-radius: 999px; background: var(--surface);
}
.user-chip .avatar {
  width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--brand-500), var(--accent)); color: #fff; font-weight: 800;
}
.user-chip .uname { font-size: 13.5px; font-weight: 600; color: var(--label); line-height: 1.2; }
.user-chip .urole { font-size: 11px; color: var(--text-muted); line-height: 1.1; }

.content { padding: 28px 30px 48px; max-width: 1680px; margin-inline: auto; }

/* ---------- Cards ---------- */
.card {
  background: var(--surface); border: 1px solid var(--border) !important;
  border-radius: var(--radius) !important; box-shadow: var(--shadow-sm) !important;
  overflow: hidden;
}
.card.shadow-sm { box-shadow: var(--shadow-sm) !important; }
.card-header {
  background: var(--surface-2); border-bottom: 1px solid var(--border);
  padding: 16px 22px; font-weight: 700;
}
.card-header.bg-primary {
  background: linear-gradient(120deg, var(--brand-700), var(--brand-500)) !important;
  border: 0; color: #fff;
}
.card-header.bg-primary h5, .card-header.bg-primary h4 { color: #fff; }
.card-body { padding: 22px; }

.border.rounded.p-3 {
  background: var(--surface-2); border-color: var(--border) !important;
  border-radius: var(--radius-sm) !important; transition: .2s;
}
.border.rounded.p-3:hover { background: var(--surface); border-color: #cfe0f3 !important; box-shadow: var(--shadow-sm); }

/* ---------- Buttons ---------- */
.btn {
  border-radius: 11px; font-weight: 600; font-size: 14px; padding: 8px 18px;
  border-width: 1px; transition: all .18s ease;
}
.btn-sm { padding: 5px 12px; font-size: 13px; border-radius: 9px; }
.btn-lg { padding: 11px 26px; border-radius: 13px; }
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: linear-gradient(135deg, var(--brand-600), var(--brand-500));
  border-color: var(--brand-600); box-shadow: 0 4px 12px rgba(26, 115, 200, .28);
}
.btn-primary:hover, .btn-primary:focus {
  background: linear-gradient(135deg, var(--brand-700), var(--brand-600));
  border-color: var(--brand-700); box-shadow: 0 6px 16px rgba(26, 115, 200, .36); transform: translateY(-1px);
}
.btn-success { background: var(--success); border-color: var(--success); box-shadow: 0 4px 12px rgba(22, 163, 74, .25); }
.btn-warning { background: #f59e0b; border-color: #f59e0b; color: #3b2300; }
.btn-danger { background: var(--danger); border-color: var(--danger); box-shadow: 0 4px 12px rgba(220, 38, 38, .22); }
.btn-info { background: var(--info); border-color: var(--info); color: #fff; }
.btn-secondary { background: #64748b; border-color: #64748b; }
.btn-outline-primary { color: var(--link); border-color: var(--input-border); background: var(--surface); }
.btn-outline-primary:hover { background: var(--brand-600); border-color: var(--brand-600); color: #fff; }
.btn-outline-secondary { color: var(--label); border-color: var(--input-border); background: var(--surface); }
.btn-outline-secondary:hover { background: #475569; border-color: #475569; color: #fff; }
.btn-outline-danger { background: var(--surface); }
.btn-outline-success { background: var(--surface); }

/* ---------- Forms ---------- */
.form-label { font-weight: 600; font-size: 13.5px; color: var(--label); margin-bottom: 6px; }
.form-control, .form-select, textarea.form-control {
  border: 1px solid var(--input-border); border-radius: 11px; padding: 9px 14px;
  background-color: var(--input-bg); color: var(--text); transition: border-color .15s, box-shadow .15s;
}
.form-control::placeholder { color: #94a3b8; }
.form-control:focus, .form-select:focus {
  border-color: var(--brand-500); box-shadow: 0 0 0 4px rgba(26, 115, 200, .13);
}
.form-control:disabled, .form-control[readonly] { background: var(--surface-2); }
.input-group > .form-control { border-radius: 11px; }
.input-group > .btn { border-radius: 11px; }
.input-group > :not(:first-child) { margin-right: -1px; }
.form-check-input:checked { background-color: var(--brand-600); border-color: var(--brand-600); }
.form-check-input:focus { box-shadow: 0 0 0 4px rgba(26, 115, 200, .13); }

/* ---------- Tables ---------- */
.table-responsive { border-radius: var(--radius-sm); }
.table { --bs-table-bg: transparent; margin-bottom: 0; color: var(--text); }
.table > thead > tr > th, .table-light, .table-light > th {
  background: var(--surface-2) !important; color: var(--label); font-size: 12.5px; font-weight: 700;
  letter-spacing: .2px; border-bottom: 1px solid var(--border) !important; padding: 13px 14px; white-space: nowrap;
}
.table > tbody > tr > td { padding: 13px 14px; border-color: var(--border); vertical-align: middle; }
.table-hover > tbody > tr { transition: background .15s; }
.table-hover > tbody > tr:hover > * { --bs-table-hover-bg: var(--brand-50); background: var(--brand-50); }
.table-striped > tbody > tr:nth-of-type(odd) > * { --bs-table-striped-bg: var(--surface-2); }

/* ---------- Badges ---------- */
.badge { font-weight: 600; font-size: 12px; padding: .45em .85em; border-radius: 999px; letter-spacing: 0; }
.badge.bg-success { background: var(--success-soft) !important; color: var(--success-text) !important; }
.badge.bg-danger { background: var(--danger-soft) !important; color: var(--danger-text) !important; }
.badge.bg-warning { background: var(--warning-soft) !important; color: var(--warning-text) !important; }
.badge.bg-info { background: var(--info-soft) !important; color: var(--info-text) !important; }
.badge.bg-primary { background: var(--brand-100) !important; color: var(--link) !important; }
.badge.bg-secondary { background: var(--surface-3) !important; color: var(--label) !important; }
.badge.bg-dark { background: var(--surface-3) !important; color: var(--text) !important; }
.badge.text-dark { color: inherit !important; }

/* ---------- Alerts / Toasts ---------- */
.alert { border: 0; border-radius: 14px; border-inline-start: 4px solid; box-shadow: var(--shadow-sm); }
.alert-success { background: var(--success-soft); color: var(--success-text); border-color: var(--success); }
.alert-danger, .alert-error { background: var(--danger-soft); color: var(--danger-text); border-color: var(--danger); }
.alert-warning { background: var(--warning-soft); color: var(--warning-text); border-color: var(--warning); }
.alert-info { background: var(--info-soft); color: var(--info-text); border-color: var(--info); }

.toast-stack {
  position: fixed; top: 84px; left: 24px; z-index: 2000; display: flex;
  flex-direction: column; gap: 10px; width: min(380px, calc(100vw - 32px));
}
html[dir="ltr"] .toast-stack { left: auto; right: 24px; }
.toast-msg {
  display: flex; gap: 12px; align-items: flex-start; padding: 14px 16px;
  background: var(--surface); color: var(--text); border: 1px solid var(--border); border-radius: 14px;
  box-shadow: var(--shadow-lg); border-inline-start: 4px solid var(--info);
  animation: toast-in .35s cubic-bezier(.2, .9, .3, 1.2);
}
.toast-msg.success { border-inline-start-color: var(--success); }
.toast-msg.error, .toast-msg.danger { border-inline-start-color: var(--danger); }
.toast-msg.warning { border-inline-start-color: var(--warning); }
.toast-msg .t-icon { font-size: 20px; line-height: 1.2; }
.toast-msg.success .t-icon { color: var(--success); }
.toast-msg.error .t-icon, .toast-msg.danger .t-icon { color: var(--danger); }
.toast-msg.warning .t-icon { color: var(--warning); }
.toast-msg.info .t-icon, .toast-msg.debug .t-icon { color: var(--info); }
.toast-msg .t-body { flex: 1; font-size: 14px; }
.toast-msg .t-close { background: none; border: 0; color: #94a3b8; font-size: 18px; line-height: 1; cursor: pointer; }
@keyframes toast-in { from { opacity: 0; transform: translateY(-10px) scale(.97); } to { opacity: 1; transform: none; } }

/* ---------- Pagination / misc ---------- */
.page-link { border-radius: 10px !important; margin-inline: 2px; color: var(--link); border-color: var(--border); background: var(--surface); }
.page-item.active .page-link { background: var(--brand-600); border-color: var(--brand-600); }
.list-group-item { border-color: var(--border); }
.modal-content { border: 0; border-radius: var(--radius); box-shadow: var(--shadow-lg); }
.dropdown-menu { border: 1px solid var(--border); border-radius: 14px; box-shadow: var(--shadow-lg); padding: 8px; }
.dropdown-item { border-radius: 9px; }
hr { border-color: var(--border); opacity: 1; }
.bg-light { background: var(--surface-2) !important; }

/* ---------- Responsive ---------- */
@media (max-width: 992px) { .quick-search-form { display: none; } .content { padding: 20px 16px 40px; } }
@media (max-width: 768px) {
  .main-content, html[dir="ltr"] .main-content { margin-inline: 0 !important; }
  .topbar { padding: 0 14px; }
  .topbar > strong { display: none; }
  .user-chip .uname-wrap { display: none; }
  .user-chip { padding: 4px; }
  .toast-stack { top: 76px; left: 16px; right: 16px; width: auto; }
}

/* ---------- Print ---------- */
@media print {
  .sidebar, .topbar, .toast-stack, .no-print { display: none !important; }
  .main-content { margin: 0 !important; }
  .content { padding: 0; max-width: none; }
  body { background: #fff; }
  .card { box-shadow: none !important; border: 1px solid #ddd !important; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }

/* ==========================================================================
   Layout base (sidebar / topbar / collapse / mobile)
   ========================================================================== */
.sidebar {
  position: fixed; top: 0; right: 0; height: 100vh; max-height: 100vh;
  color: #fff; z-index: 1000; overflow-y: auto; overflow-x: hidden;
  transition: width .25s ease, transform .25s ease;
}
.sidebar a { display: flex; align-items: center; text-decoration: none; border: 1px solid transparent; transition: background .2s, color .2s; }
.menu-icon { display: flex; align-items: center; justify-content: center; flex-shrink: 0; transition: background .2s; }
.menu-text { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sidebar.collapsed .menu-text { display: none; }
.sidebar.collapsed a { justify-content: center; padding-inline: 0; }

.sidebar-toggle {
  position: absolute; top: 20px; left: 10px; width: 28px; height: 28px; z-index: 2;
  border-radius: 9px; border: 1px solid rgba(255, 255, 255, .18);
  background: rgba(255, 255, 255, .08); color: #fff; display: grid; place-items: center;
  font-size: 12px; cursor: pointer; transition: .2s;
}
.sidebar-toggle:hover { background: rgba(255, 255, 255, .2); }
html[dir="ltr"] .sidebar-toggle { left: auto; right: 10px; }
.sidebar.collapsed .sidebar-toggle { position: static; margin: 0 auto 10px; }

.topbar { display: flex; align-items: center; }
.mobile-menu-btn {
  display: none; width: 42px; height: 42px; border-radius: 12px; border: 1px solid var(--border);
  background: var(--surface); font-size: 22px; color: var(--link); align-items: center; justify-content: center;
}
.language-switcher select {
  border: 1px solid var(--border); background: var(--surface); border-radius: 10px; padding: 6px 10px;
  font-family: inherit; font-size: 13px; color: var(--label); cursor: pointer;
}
.language-switcher select:focus { outline: 0; border-color: var(--brand-500); box-shadow: 0 0 0 3px rgba(26, 115, 200, .13); }
.btn-logout { border-radius: 11px; }

.sidebar-overlay { display: none; position: fixed; inset: 0; background: rgba(8, 20, 40, .45); backdrop-filter: blur(2px); z-index: 999; }

@media (max-width: 768px) {
  .sidebar { transform: translateX(105%); width: min(300px, 86vw) !important; box-shadow: none; }
  html[dir="ltr"] .sidebar { transform: translateX(-105%); }
  .sidebar.mobile-open { transform: none; box-shadow: -20px 0 60px rgba(0, 0, 0, .35); }
  .sidebar.mobile-open ~ .sidebar-overlay { display: block; }
  .mobile-menu-btn { display: inline-flex; }
  .sidebar-toggle { display: none; }
  .sidebar.collapsed .menu-text { display: inline; }
  .sidebar.collapsed .brand .brand-text { display: block; }
}

/* ---------- Table polish ---------- */
.table td strong, .table td .code, .table td .badge { white-space: nowrap; }
.table td:last-child .btn, .table td .btn-sm { white-space: nowrap; }
.table td.text-center { white-space: nowrap; }

/* ==========================================================================
   Colorful accents
   ========================================================================== */
.btn-success { background: linear-gradient(135deg, #16a34a, #22c55e); border-color: #16a34a; }
.btn-danger  { background: linear-gradient(135deg, #dc2626, #f43f5e); border-color: #dc2626; }
.btn-warning { background: linear-gradient(135deg, #f59e0b, #fbbf24); border-color: #f59e0b; }
.btn-info    { background: linear-gradient(135deg, #0891b2, #22d3ee); border-color: #0891b2; }
.btn-secondary { background: linear-gradient(135deg, #64748b, #94a3b8); border-color: #64748b; }
.btn-success:hover, .btn-danger:hover, .btn-warning:hover, .btn-info:hover { filter: brightness(1.06); transform: translateY(-1px); }

.card { border-top: 3px solid transparent !important; border-image: none; background-clip: padding-box; }
.card:nth-of-type(4n+1) { border-top-color: #1a73c8 !important; }
.card:nth-of-type(4n+2) { border-top-color: #14b8a6 !important; }
.card:nth-of-type(4n+3) { border-top-color: #8b5cf6 !important; }
.card:nth-of-type(4n+4) { border-top-color: #f59e0b !important; }

.table > thead > tr > th {
  background: linear-gradient(90deg, color-mix(in srgb, var(--brand-500) 12%, var(--surface-2)), color-mix(in srgb, var(--accent) 10%, var(--surface-2))) !important;
}

.sidebar .menu-icon { background: color-mix(in srgb, var(--ic, #fff) 18%, transparent); }
.sidebar .menu-icon i { color: var(--ic, #fff); }
.sidebar a.active .menu-icon { background: color-mix(in srgb, var(--ic, #fff) 32%, transparent); }

/* theme toggle */
.theme-toggle {
  position: relative; width: 56px; height: 32px; border-radius: 999px; border: 1px solid var(--border);
  background: linear-gradient(135deg, #bae6fd, #fde68a); cursor: pointer; padding: 0; flex-shrink: 0;
  transition: background .35s, border-color .35s;
}
.theme-toggle .knob {
  position: absolute; top: 3px; inset-inline-start: 3px; width: 24px; height: 24px; border-radius: 50%;
  background: #fff; display: grid; place-items: center; color: #f59e0b; font-size: 14px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, .25); transition: transform .35s cubic-bezier(.3, 1.4, .5, 1), background .35s, color .35s;
}
.theme-toggle .knob .moon { display: none; }
html[data-theme="dark"] .theme-toggle { background: linear-gradient(135deg, #1e1b4b, #4338ca); border-color: #312e81; }
html[data-theme="dark"] .theme-toggle .knob { transform: translateX(-24px); background: #0f172a; color: #c4b5fd; }
html[dir="ltr"][data-theme="dark"] .theme-toggle .knob { transform: translateX(24px); }
html[data-theme="dark"] .theme-toggle .knob .sun { display: none; }
html[data-theme="dark"] .theme-toggle .knob .moon { display: inline; }

/* ==========================================================================
   DARK THEME
   ========================================================================== */
html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0a1020;
  --surface: #121b30;
  --surface-2: #18233b;
  --surface-3: #1f2c47;
  --border: #243252;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --heading: #f1f5f9;
  --label: #cbd5e1;
  --link: #7dd3fc;
  --input-bg: #0e1628;
  --input-border: #2a3a5c;
  --topbar-bg: rgba(14, 22, 40, .82);
  --brand-100: rgba(56, 142, 230, .20);
  --brand-50: rgba(56, 142, 230, .10);
  --success-soft: rgba(34, 197, 94, .15);  --success-text: #86efac;
  --danger-soft: rgba(244, 63, 94, .16);   --danger-text: #fda4af;
  --warning-soft: rgba(245, 158, 11, .16); --warning-text: #fcd34d;
  --info-soft: rgba(34, 211, 238, .14);    --info-text: #67e8f9;
  --violet-soft: rgba(139, 92, 246, .18);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);
  --shadow: 0 8px 24px rgba(0, 0, 0, .35);
  --shadow-lg: 0 18px 48px rgba(0, 0, 0, .5);
  --bs-body-color: var(--text);
  --bs-body-bg: var(--bg);
  --bs-border-color: var(--border);
  --bs-secondary-color: var(--text-muted);
}
html[data-theme="dark"] body {
  background:
    radial-gradient(900px 500px at 100% -5%, rgba(56, 142, 230, .16), transparent 60%),
    radial-gradient(700px 420px at 0% 0%, rgba(139, 92, 246, .14), transparent 60%),
    var(--bg);
  background-attachment: fixed; color: var(--text);
}
html[data-theme="dark"] .sidebar {
  background:
    radial-gradient(900px 300px at 100% -10%, rgba(99, 102, 241, .35), transparent 60%),
    linear-gradient(185deg, #0e1a33 0%, #0a1226 60%, #070d1c 100%);
}
html[data-theme="dark"] ::selection { background: rgba(56, 142, 230, .35); }
html[data-theme="dark"] * { scrollbar-color: #33466b transparent; }
html[data-theme="dark"] ::-webkit-scrollbar-thumb { background: #33466b; }

/* Bootstrap utilities & components */
html[data-theme="dark"] .bg-white,
html[data-theme="dark"] .bg-body { background: var(--surface) !important; }
html[data-theme="dark"] .bg-light { background: var(--surface-2) !important; }
html[data-theme="dark"] .text-dark, html[data-theme="dark"] .text-body { color: var(--text) !important; }
html[data-theme="dark"] .text-secondary { color: var(--text-muted) !important; }
html[data-theme="dark"] .border, html[data-theme="dark"] .border-bottom, html[data-theme="dark"] .border-top { border-color: var(--border) !important; }
html[data-theme="dark"] .table { --bs-table-color: var(--text); --bs-table-hover-color: var(--text); color: var(--text); }
html[data-theme="dark"] .table-hover > tbody > tr:hover > * { background: rgba(56, 142, 230, .12); color: var(--text); }
html[data-theme="dark"] .table-light, html[data-theme="dark"] .table-light > th { color: var(--label); }
html[data-theme="dark"] .form-control, html[data-theme="dark"] .form-select { color: var(--text); }
html[data-theme="dark"] .form-control:disabled, html[data-theme="dark"] .form-control[readonly] { background: var(--surface-2); }
html[data-theme="dark"] .form-select { background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%2394a3b8' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3e%3c/svg%3e"); }
html[data-theme="dark"] option { background: var(--surface); color: var(--text); }
html[data-theme="dark"] .btn-outline-primary:hover { background: var(--brand-600); color: #fff; }
html[data-theme="dark"] .btn-outline-secondary:hover { background: var(--surface-3); color: #fff; border-color: var(--input-border); }
html[data-theme="dark"] .modal-content, html[data-theme="dark"] .dropdown-menu, html[data-theme="dark"] .list-group-item { background: var(--surface); color: var(--text); }
html[data-theme="dark"] .dropdown-item { color: var(--text); }
html[data-theme="dark"] .dropdown-item:hover { background: var(--surface-3); }
html[data-theme="dark"] .alert-success { background: var(--success-soft); }
html[data-theme="dark"] .card-header { background: var(--surface-2); color: var(--heading); }
html[data-theme="dark"] .card-header.bg-primary { background: linear-gradient(120deg, #1e3a8a, #4f46e5) !important; }
html[data-theme="dark"] .btn-close { filter: invert(1); }
html[data-theme="dark"] hr { border-color: var(--border); }
html[data-theme="dark"] .border.rounded.p-3 { background: var(--surface-2); }

/* page-level classes that hard-code light colors in individual templates */
html[data-theme="dark"] .report-card,
html[data-theme="dark"] .comprehensive-report-card,
html[data-theme="dark"] .comprehensive-stat,
html[data-theme="dark"] .report-header,
html[data-theme="dark"] .summary-card,
html[data-theme="dark"] .status-box,
html[data-theme="dark"] .attention-item,
html[data-theme="dark"] .mini-stat,
html[data-theme="dark"] .selected-asset,
html[data-theme="dark"] .info-box,
html[data-theme="dark"] .detail-card,
html[data-theme="dark"] .section-card {
  background: var(--surface) !important; color: var(--text) !important; border-color: var(--border) !important;
}
html[data-theme="dark"] .status-success, html[data-theme="dark"] .maintenance-completed { background: var(--success-soft) !important; border-color: rgba(34,197,94,.3) !important; }
html[data-theme="dark"] .status-secondary { background: var(--surface-2) !important; }
html[data-theme="dark"] .maintenance-danger, html[data-theme="dark"] .asset-lost { background: var(--danger-soft) !important; border-color: rgba(244,63,94,.3) !important; }
html[data-theme="dark"] .maintenance-pending { background: var(--warning-soft) !important; border-color: rgba(245,158,11,.3) !important; }
html[data-theme="dark"] .summary-title, html[data-theme="dark"] .summary-text, html[data-theme="dark"] .status-title,
html[data-theme="dark"] .mini-stat span, html[data-theme="dark"] .report-card p,
html[data-theme="dark"] .comprehensive-report-title p, html[data-theme="dark"] .comprehensive-report-description { color: var(--text-muted) !important; }
html[data-theme="dark"] .summary-number, html[data-theme="dark"] .status-number, html[data-theme="dark"] .mini-stat strong,
html[data-theme="dark"] .report-card h5, html[data-theme="dark"] .comprehensive-report-title h4,
html[data-theme="dark"] .selected-asset strong { color: var(--heading) !important; }
html[data-theme="dark"] .comprehensive-report-card { background: linear-gradient(135deg, var(--surface), var(--surface-2)) !important; }
html[data-theme="dark"] .comprehensive-report-icon, html[data-theme="dark"] .comprehensive-stat > i { background: var(--brand-100) !important; }
/* activity_form.html has its own body/card/h1 rules */
html[data-theme="dark"] body { color: var(--text); }
html[data-theme="dark"] .container .card, html[data-theme="dark"] form .card { background: var(--surface); }
html[data-theme="dark"] h1 { color: var(--heading); }
html[data-theme="dark"] .text-muted { color: var(--text-muted) !important; }
html[data-theme="dark"] a:not(.btn):not(.dropdown-item):not(.page-link):not(.kpi):not(.chip):not([class*="report-card"]):not(.nav-link) { color: var(--link); }
html[data-theme="dark"] .sidebar a { color: rgba(255, 255, 255, .8) !important; }
html[data-theme="dark"] .sidebar a.active { color: #fff !important; }

/* smooth theme transition */
html.theme-anim, html.theme-anim *, html.theme-anim *::before, html.theme-anim *::after {
  transition: background-color .3s ease, border-color .3s ease, color .25s ease, box-shadow .3s ease !important;
}

/* dark: readable outline buttons even when a page overrides their colours */
html[data-theme="dark"] .btn-outline-primary { color: #7dd3fc !important; border-color: rgba(125, 211, 252, .4) !important; }
html[data-theme="dark"] .btn-outline-info { color: #67e8f9 !important; border-color: rgba(103, 232, 249, .4) !important; }
html[data-theme="dark"] .btn-outline-success { color: #86efac !important; border-color: rgba(134, 239, 172, .4) !important; }
html[data-theme="dark"] .btn-outline-warning { color: #fcd34d !important; border-color: rgba(252, 211, 77, .4) !important; }
html[data-theme="dark"] .btn-outline-danger { color: #fda4af !important; border-color: rgba(253, 164, 175, .4) !important; }
html[data-theme="dark"] .btn-outline-secondary { color: #cbd5e1 !important; }
html[data-theme="dark"] .btn-outline-primary:hover { background: #2563eb !important; color: #fff !important; }
html[data-theme="dark"] .btn-outline-info:hover { background: #0891b2 !important; color: #fff !important; }
html[data-theme="dark"] .btn-outline-success:hover { background: #16a34a !important; color: #fff !important; }
html[data-theme="dark"] .btn-outline-warning:hover { background: #f59e0b !important; color: #1f1300 !important; }
html[data-theme="dark"] .btn-outline-danger:hover { background: #e11d48 !important; color: #fff !important; }