/* ============================================================
   LEADFINDER PRO - DISEÑO v3: OSCURO / FUTURISTA
   ============================================================ */
:root {
  color-scheme: dark;
  --lf-blue: #3b82f6;
  --lf-cyan: #22d3ee;
  --lf-glow: rgba(59, 130, 246, .35);
  --lf-radius: 16px;
  --lf-radius-sm: 10px;
  --lf-transition: all .18s ease;
  --font-display: 'Sora', -apple-system, sans-serif;
  --font-body: 'Inter', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Consolas', monospace;

  --bg: #05060a;
  --surface: rgba(255,255,255,.035);
  --surface-solid: #0e0f14;
  --surface-2: rgba(255,255,255,.06);
  --text: #f1f5f9;
  --text-muted: #8b93a7;
  --border: rgba(255,255,255,.09);
  --border-glow: rgba(59,130,246,.35);
  --sidebar-bg: rgba(6,7,12,.92);
  --sidebar-text: #8b93a7;
  --sidebar-text-active: #ffffff;
  --sidebar-active-bg: linear-gradient(90deg, rgba(59,130,246,.18), rgba(34,211,238,.05));
  --success: #34d399;
  --danger: #f87171;
  --warning: #fbbf24;
}

/* Modo claro (alternativa disponible, no es el foco visual del sistema) */
[data-theme="light"] {
  color-scheme: light;
  --bg: #f4f5f7;
  --surface: #ffffff;
  --surface-solid: #ffffff;
  --surface-2: #f1f2f5;
  --text: #0f1115;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --border-glow: #3b82f6;
  --sidebar-bg: #0a0a0b;
  --sidebar-text: #a1a1aa;
  --sidebar-text-active: #ffffff;
  --sidebar-active-bg: rgba(255,255,255,.08);
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  color: var(--text);
  font-family: var(--font-body);
  font-size: .925rem;
  transition: background-color .2s ease, color .2s ease;
  background-color: var(--bg);
  background-image:
    radial-gradient(circle at 12% -10%, rgba(59,130,246,.14), transparent 42%),
    radial-gradient(circle at 88% 0%, rgba(34,211,238,.10), transparent 38%),
    radial-gradient(circle at 50% 100%, rgba(59,130,246,.06), transparent 45%);
  background-attachment: fixed;
  background-repeat: no-repeat;
}
[data-theme="light"] body { background-image: none; }

h1, h2, h3, h4, h5, h6, .brand { font-family: var(--font-display); letter-spacing: -.01em; }

/* ---------------- Sidebar ---------------- */
.lf-sidebar {
  background: var(--sidebar-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  min-height: 100vh;
  width: 252px;
  position: fixed;
  top: 0; left: 0;
  padding: 1.25rem 1rem;
  color: var(--sidebar-text);
  z-index: 1030;
  transition: transform .25s ease;
  border-right: 1px solid var(--border);
}
[data-theme="dark"] .lf-sidebar::after {
  content: "";
  position: absolute; top: 0; right: -1px; bottom: 0; width: 1px;
  background: linear-gradient(180deg, transparent, rgba(59,130,246,.5), transparent);
}

.lf-sidebar .brand {
  color: #fff;
  font-weight: 600;
  font-size: 1.08rem;
  display: flex;
  align-items: center;
  gap: .55rem;
  margin-bottom: 1.75rem;
  padding: 0 .4rem;
}
.lf-sidebar .brand i {
  color: var(--lf-cyan);
  filter: drop-shadow(0 0 6px rgba(34,211,238,.6));
}
.lf-sidebar .brand .brand-accent { color: var(--sidebar-text); font-weight: 400; }

.lf-sidebar .nav-section-label {
  font-family: var(--font-mono);
  font-size: .65rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: #495066;
  padding: 0 .6rem;
  margin: 1.15rem 0 .4rem;
  font-weight: 500;
}
.lf-sidebar .nav-section-label:first-of-type { margin-top: 0; }

.lf-sidebar .nav-link {
  color: var(--sidebar-text);
  border-radius: 9px;
  padding: .5rem .65rem;
  margin-bottom: .12rem;
  display: flex;
  align-items: center;
  gap: .65rem;
  font-size: .87rem;
  transition: var(--lf-transition);
  border-left: 2px solid transparent;
  position: relative;
}
.lf-sidebar .nav-link i { width: 16px; text-align: center; font-size: .85em; opacity: .8; }
.lf-sidebar .nav-link:hover { background: rgba(255,255,255,.05); color: #fff; }
.lf-sidebar .nav-link.active {
  background: var(--sidebar-active-bg);
  color: var(--sidebar-text-active);
  font-weight: 500;
  border-left-color: var(--lf-cyan);
}
.lf-sidebar .nav-link.active i { color: var(--lf-cyan); opacity: 1; }

.lf-content { margin-left: 252px; padding: 1.5rem 1.75rem; min-height: 100vh; position: relative; z-index: 1; }

/* ---------------- Topbar ---------------- */
.lf-topbar {
  background: transparent;
  padding: .25rem 0 1.35rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.lf-topbar h5 {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--text);
}

.icon-btn, .theme-toggle {
  width: 36px; height: 36px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: var(--lf-transition);
  cursor: pointer;
}
.icon-btn:hover, .theme-toggle:hover { color: var(--text); border-color: var(--border-glow); box-shadow: 0 0 0 3px rgba(59,130,246,.12); }

/* ---------------- Cards (efecto vidrio) ---------------- */
.lf-card {
  position: relative;
  background: linear-gradient(180deg, var(--surface-2), var(--surface)), var(--surface-solid);
  background-blend-mode: overlay;
  border-radius: var(--lf-radius);
  border: 1px solid var(--border);
  padding: 1.25rem;
  transition: var(--lf-transition);
}
/* Nota técnica: antes esta tarjeta usaba backdrop-filter (efecto de vidrio esmerilado).
   Se quitó a propósito: backdrop-filter en un ancestro redefine el "contenedor" de
   elementos con position:fixed dentro de él (incluidos los menús desplegables de
   Bootstrap/Popper), atrapándolos dentro del rectángulo de la tarjeta sin importar
   el z-index. Es la causa real de que los menús se vieran cortados/atrapados. */
[data-theme="dark"] .lf-card:hover {
  border-color: rgba(59,130,246,.3);
  box-shadow: 0 0 0 1px rgba(59,130,246,.08), 0 12px 32px -12px rgba(59,130,246,.25);
}
[data-theme="light"] .lf-card { background: var(--surface); backdrop-filter: none; box-shadow: 0 1px 3px rgba(0,0,0,.04); }

.lf-stat-card { display: block; }
.lf-stat-label {
  color: var(--text-muted);
  font-size: .78rem;
  margin-bottom: .5rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: .04em;
}
.lf-stat-value {
  font-family: var(--font-mono);
  font-size: 1.85rem;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -.02em;
  background: linear-gradient(135deg, #ffffff, #a5b4fc 120%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
[data-theme="light"] .lf-stat-value { background: none; -webkit-text-fill-color: initial; color: var(--text); }

.lf-stat-delta { font-size: .78rem; margin-top: .5rem; display: flex; align-items: center; gap: .25rem; font-family: var(--font-mono); }
.lf-stat-delta.up { color: var(--success); }
.lf-stat-delta.down { color: var(--danger); }

.lf-stat-icon {
  width: 44px; height: 44px;
  border-radius: 11px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  color: #fff;
  margin-bottom: .75rem;
}

.lf-badge-web-yes { background: rgba(52,211,153,.14); color: #34d399; }
.lf-badge-web-no { background: rgba(248,113,113,.14); color: #f87171; }
.lf-badge-neutral { background: var(--surface-2); color: var(--text-muted); }

/* ---------------- Botones ---------------- */
.btn-lf-primary {
  background: linear-gradient(135deg, var(--lf-blue), var(--lf-cyan));
  border: none;
  color: #041018;
  font-weight: 600;
  border-radius: 10px;
  box-shadow: 0 0 0 0 rgba(59,130,246,0);
  transition: var(--lf-transition);
}
.btn-lf-primary:hover {
  color: #041018;
  box-shadow: 0 4px 20px -4px var(--lf-glow);
  transform: translateY(-1px);
}
[data-theme="light"] .btn-lf-primary { color: #fff; }

.btn, .form-control, .form-select { border-radius: 10px !important; }

/* ---------------- Tablas ---------------- */
.table { color: var(--text); font-family: var(--font-body); }
.table thead th {
  color: var(--text-muted);
  font-size: .7rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: .06em;
  font-weight: 500;
  border-bottom: 1px solid var(--border);
  background: transparent;
}
.table td { border-color: var(--border); vertical-align: middle; }
.table-hover tbody tr:hover { background: var(--surface-2); }

/* Especificidad exacta requerida para vencer las reglas nativas de Bootstrap en modo oscuro */
[data-theme="dark"] .table > :not(caption) > * > * {
  color: var(--text);
  background-color: transparent;
  border-bottom-color: var(--border);
  box-shadow: none;
}
[data-theme="dark"] .table > thead > tr > * { color: var(--text-muted); background-color: transparent; }
[data-theme="dark"] .table-hover > tbody > tr:hover > * { color: var(--text); background-color: var(--surface-2); }
[data-theme="dark"] .table-responsive { color: var(--text); }

/* ---------------- Auth ---------------- */
.auth-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg);
  background-image:
    radial-gradient(circle at 20% 20%, rgba(59,130,246,.18), transparent 40%),
    radial-gradient(circle at 80% 80%, rgba(34,211,238,.14), transparent 40%);
}
.auth-card {
  background: var(--surface-solid);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 2.5rem;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 0 60px -20px rgba(59,130,246,.25);
}

/* ---------------- Kanban ---------------- */
.kanban-col { background: var(--surface-solid); }
.kanban-col .border { border-color: var(--border) !important; background: var(--surface-2); }

/* ---------------- Otros componentes en modo oscuro ---------------- */
[data-theme="dark"] .modal-content { background: var(--surface-solid); color: var(--text); border-color: var(--border); }
[data-theme="dark"] .modal-header, [data-theme="dark"] .modal-footer { border-color: var(--border); }
[data-theme="dark"] .btn-close { filter: invert(1) grayscale(100%) brightness(200%); }

[data-theme="dark"] .dropdown-menu { background: var(--surface-solid); border-color: var(--border); }
[data-theme="dark"] .dropdown-item { color: var(--text); }
[data-theme="dark"] .dropdown-item:hover, [data-theme="dark"] .dropdown-item:focus { background: var(--surface-2); color: var(--text); }
[data-theme="dark"] .dropdown-divider { border-color: var(--border); }

[data-theme="dark"] .form-control, [data-theme="dark"] .form-select {
  background-color: var(--surface-2); border-color: var(--border); color: var(--text);
}
[data-theme="dark"] .form-control:focus, [data-theme="dark"] .form-select:focus {
  background-color: var(--surface-2); color: var(--text); border-color: var(--lf-blue);
  box-shadow: 0 0 0 3px rgba(59,130,246,.15);
}
[data-theme="dark"] .form-control::placeholder { color: #5b6478; }
[data-theme="dark"] .form-label { color: var(--text); }

/* El popup de opciones de un <select> se comporta distinto según el navegador:
   Firefox respeta el color de fondo que le pongamos a <option>, pero Chrome en
   Windows lo IGNORA y siempre usa su propio fondo claro nativo (solo respeta el
   color de texto). Por eso reemplazamos el <select> por un menú desplegable propio
   (ver enhanceSelect() en app.js) — estos estilos son para ese reemplazo, no para
   el <select> nativo en sí. */
.lf-select-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}
.lf-select-wrapper { position: relative; }
.lf-select-wrapper .dropdown-toggle {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.lf-select-menu {
  max-height: 280px;
  overflow-y: auto;
  min-width: 100%;
}
[data-theme="dark"] .lf-select-menu .dropdown-item.active {
  background: var(--lf-blue);
  color: #fff;
}
[data-theme="dark"] .form-check-input:not(:checked) { background-color: var(--surface-2); border-color: var(--border); }
[data-theme="dark"] .input-group-text { background-color: var(--surface-2); border-color: var(--border); color: var(--text-muted); }

[data-theme="dark"] .nav-tabs { border-color: var(--border); }
[data-theme="dark"] .nav-tabs .nav-link { color: var(--text-muted); border: none; }
[data-theme="dark"] .nav-tabs .nav-link.active { color: var(--text); background: var(--surface-2); border-color: var(--border); }
[data-theme="dark"] .nav-pills .nav-link { color: var(--text-muted); }
[data-theme="dark"] .nav-pills .nav-link.active { background: linear-gradient(135deg, var(--lf-blue), var(--lf-cyan)); color: #041018; font-weight: 600; }
[data-theme="dark"] .list-group-item { background: var(--surface-solid); color: var(--text); border-color: var(--border); }
[data-theme="dark"] .list-group-item-action:hover { background: var(--surface-2); color: var(--text); }
[data-theme="dark"] .toast { background: var(--surface-solid); color: var(--text); }
[data-theme="dark"] pre { background: var(--surface-2) !important; color: var(--text); }
[data-theme="dark"] .badge.bg-light { background-color: var(--surface-2) !important; color: var(--text) !important; }
[data-theme="dark"] .btn-light { background-color: var(--surface-2); border-color: var(--border); color: var(--text); }
[data-theme="dark"] .btn-outline-secondary { color: var(--text-muted); border-color: var(--border); }
[data-theme="dark"] .btn-outline-secondary:hover { background-color: var(--surface-2); color: var(--text); }
[data-theme="dark"] .text-muted { color: var(--text-muted) !important; }
[data-theme="dark"] .border, [data-theme="dark"] .border-bottom, [data-theme="dark"] .border-top { border-color: var(--border) !important; }
[data-theme="dark"] hr { border-color: var(--border); opacity: 1; }
[data-theme="dark"] .pagination .page-link { background: var(--surface-solid); border-color: var(--border); color: var(--text); }
[data-theme="dark"] .pagination .page-item.active .page-link { background: var(--lf-blue); border-color: var(--lf-blue); }

/* Números/datos técnicos con fuente monoespaciada (IDs, teléfonos, coordenadas) */
.font-mono, code { font-family: var(--font-mono); }

/* Scrollbar futurista */
[data-theme="dark"] ::-webkit-scrollbar { width: 10px; height: 10px; }
[data-theme="dark"] ::-webkit-scrollbar-track { background: transparent; }
[data-theme="dark"] ::-webkit-scrollbar-thumb { background: rgba(255,255,255,.12); border-radius: 20px; border: 2px solid transparent; background-clip: padding-box; }
[data-theme="dark"] ::-webkit-scrollbar-thumb:hover { background: rgba(59,130,246,.4); background-clip: padding-box; }

/* ---------------- Responsive ---------------- */
@media (max-width: 991px) {
  .lf-sidebar { transform: translateX(-100%); }
  .lf-sidebar.show { transform: translateX(0); }
  .lf-content { margin-left: 0; }
}