/* ==========================================================================
   Sistema Universal de Clínicas — hoja de estilos principal
   --------------------------------------------------------------------------
   Índice
     1. Tokens de diseño (colores, radios, sombras) + modo oscuro
     2. Base
     3. Layout: sidebar, contenido, cabecera de página
     4. Componentes: tarjetas, stat-cards, botones, formularios, tablas, modales
     5. Integraciones: DataTables, Select2, FullCalendar
     6. Páginas específicas: login, calendario, ficha de paciente, receta
     7. Utilidades, animaciones e impresión
   El color de marca se redefine en runtime con estilosColorClinica()
   (includes/functions.php) sobreescribiendo --brand-primary; el resto de
   tonos se derivan con color-mix().
   ========================================================================== */

/* 1. Tokens ---------------------------------------------------------------- */
:root {
  --brand-primary: #4CAF82;
  --brand-dark:    color-mix(in srgb, var(--brand-primary) 65%, #000);
  --brand-darker:  color-mix(in srgb, var(--brand-primary) 45%, #000);
  --brand-light:   color-mix(in srgb, var(--brand-primary) 12%, #fff);
  --brand-info:    #3b82f6;
  --brand-warning: #f59e0b;
  --brand-danger:  #ef4444;

  --sidebar-width: 264px;
  --radius:        14px;
  --radius-sm:     10px;
  --shadow-sm:     0 1px 2px rgb(16 24 40 / .06), 0 1px 3px rgb(16 24 40 / .08);
  --shadow-md:     0 8px 24px rgb(16 24 40 / .10);

  --app-bg:        #f4f6f8;
  --surface:       #ffffff;
  --surface-muted: #f8fafc;
  --line:          #e5e9ef;
  --text:          #1f2a37;
  --text-muted:    #6b7280;

  --sidebar-bg:    #111827;
  --sidebar-text:  #cbd5e1;
  --sidebar-muted: #6b7280;
}

[data-bs-theme="dark"] {
  --brand-light:   color-mix(in srgb, var(--brand-primary) 18%, #0f172a);
  --app-bg:        #0b1220;
  --surface:       #131c2e;
  --surface-muted: #182338;
  --line:          #243049;
  --text:          #e5e7eb;
  --text-muted:    #94a3b8;
  --sidebar-bg:    #0a0f1c;
  --shadow-sm:     0 1px 2px rgb(0 0 0 / .4);
  --shadow-md:     0 8px 24px rgb(0 0 0 / .45);
}

/* 2. Base ------------------------------------------------------------------ */
body {
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  background: var(--app-bg);
  color: var(--text);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--brand-dark); }
[data-bs-theme="dark"] a:not(.btn):not(.nav-link) { color: color-mix(in srgb, var(--brand-primary) 70%, #fff); }
.text-muted { color: var(--text-muted) !important; }
:focus-visible { outline: 2px solid var(--brand-primary); outline-offset: 2px; }

/* 3. Layout ---------------------------------------------------------------- */
.main-wrapper { display: flex; min-height: 100vh; }

.sidebar {
  width: var(--sidebar-width);
  background: var(--sidebar-bg);
  color: #fff;
  position: fixed;
  inset: 0 auto 0 0;
  overflow-y: auto;
  z-index: 1040;
  display: flex;
  flex-direction: column;
  transition: transform .3s ease;
  scrollbar-width: thin;
  scrollbar-color: #334155 transparent;
}
.sidebar-header {
  padding: 1.25rem 1.25rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.sidebar-header h5 { font-weight: 700; letter-spacing: -.01em; }
.sidebar-user {
  margin: 0 .75rem .5rem;
  padding: .75rem;
  border-radius: var(--radius-sm);
  background: rgb(255 255 255 / .05);
}
.avatar-circle {
  width: 38px; height: 38px; flex-shrink: 0;
  display: grid; place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-dark));
  font-weight: 600; font-size: .9rem;
}
.sidebar-search { padding: .25rem .75rem .5rem; }
.sidebar-search .form-control {
  background: rgb(255 255 255 / .06);
  border: 1px solid transparent;
  color: #fff;
  font-size: .85rem;
  border-radius: var(--radius-sm);
}
.sidebar-search .form-control::placeholder { color: var(--sidebar-muted); }
.sidebar-search .form-control:focus {
  background: rgb(255 255 255 / .1);
  border-color: var(--brand-primary);
  box-shadow: none;
  color: #fff;
}
.sidebar .nav { padding: 0 .75rem 1rem; }
.sidebar-group { padding: .9rem .5rem .3rem; }
.sidebar-group-title {
  margin: 0;
  font-size: .68rem; font-weight: 700;
  letter-spacing: .08em; text-transform: uppercase;
  color: var(--sidebar-muted);
}
.sidebar .nav-link {
  color: var(--sidebar-text);
  padding: .55rem .75rem;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; gap: .65rem;
  font-size: .9rem;
  transition: background .15s, color .15s;
}
.sidebar .nav-link i { font-size: 1.05rem; width: 1.3rem; text-align: center; opacity: .85; }
.sidebar .nav-link:hover { color: #fff; background: rgb(255 255 255 / .07); }
.sidebar .nav-link.active {
  color: #fff; font-weight: 600;
  background: color-mix(in srgb, var(--brand-primary) 85%, #000);
  box-shadow: 0 4px 12px color-mix(in srgb, var(--brand-primary) 35%, transparent);
}
.sidebar hr { border-color: rgb(255 255 255 / .12); }
.theme-toggle {
  width: 100%; text-align: left; background: none; border: 0;
}

.main-content {
  margin-left: var(--sidebar-width);
  flex: 1; min-width: 0; min-height: 100vh;
  display: flex; flex-direction: column;
}
.page-header {
  position: sticky; top: 0; z-index: 1020;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: .5rem;
  padding: .9rem 1.5rem;
  background: color-mix(in srgb, var(--surface) 85%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.page-header h5, .page-header h4 { font-weight: 700; letter-spacing: -.01em; }
.page-content { padding: 1.5rem; flex: 1; }

.sidebar-overlay { display: none; position: fixed; inset: 0; background: rgb(0 0 0 / .5); z-index: 1039; }

@media (max-width: 991.98px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); box-shadow: var(--shadow-md); }
  .sidebar-overlay.show { display: block; }
  .main-content { margin-left: 0; }
  .page-content { padding: 1rem; }
  .page-header { padding: .75rem 1rem; }
}

/* 4. Componentes ----------------------------------------------------------- */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.card-header {
  background: transparent;
  border-bottom: 1px solid var(--line);
  font-weight: 600;
  padding: 1rem 1.25rem;
}
.card-body { padding: 1.25rem; }

/* Tarjetas de estadística (color vía .bg-brand-*) */
.stat-card {
  position: relative; overflow: hidden;
  border-radius: var(--radius);
  padding: 1.25rem;
  color: #fff;
  box-shadow: var(--shadow-sm);
  transition: transform .2s, box-shadow .2s;
}
.stat-card::after {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(circle at 100% 0, rgb(255 255 255 / .22), transparent 55%);
}
.stat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.stat-card .stat-icon { position: absolute; right: 1rem; top: 1rem; font-size: 2.2rem; opacity: .28; }
.stat-card .stat-number { font-size: 1.85rem; font-weight: 700; letter-spacing: -.02em; line-height: 1.2; }
.stat-card .stat-label { margin-top: .25rem; font-size: .85rem; opacity: .92; }

.bg-brand-primary { background: linear-gradient(135deg, var(--brand-primary), var(--brand-dark)); }
.bg-brand-dark    { background: linear-gradient(135deg, var(--brand-dark), var(--brand-darker)); }
.bg-brand-info    { background: linear-gradient(135deg, #60a5fa, var(--brand-info)); }
.bg-brand-warning { background: linear-gradient(135deg, #fbbf24, var(--brand-warning)); }
.bg-brand-danger  { background: linear-gradient(135deg, #f87171, var(--brand-danger)); }
.bg-brand-secondary { background: linear-gradient(135deg, #94a3b8, #64748b); }
.bg-brand-light   { background: var(--brand-light); color: var(--text) !important; }
.text-brand-primary { color: var(--brand-primary) !important; }

/* Botones */
.btn { border-radius: var(--radius-sm); font-weight: 500; }
.btn-brand {
  --bs-btn-color: #fff;
  --bs-btn-bg: var(--brand-primary);
  --bs-btn-border-color: var(--brand-primary);
  --bs-btn-hover-color: #fff;
  --bs-btn-hover-bg: var(--brand-dark);
  --bs-btn-hover-border-color: var(--brand-dark);
  --bs-btn-active-color: #fff;
  --bs-btn-active-bg: var(--brand-darker);
  --bs-btn-active-border-color: var(--brand-darker);
  --bs-btn-focus-shadow-rgb: 76, 175, 130;
  --bs-btn-disabled-bg: var(--brand-primary);
  --bs-btn-disabled-border-color: var(--brand-primary);
}
.btn-outline-brand {
  --bs-btn-color: var(--brand-dark);
  --bs-btn-border-color: var(--brand-primary);
  --bs-btn-hover-color: #fff;
  --bs-btn-hover-bg: var(--brand-primary);
  --bs-btn-hover-border-color: var(--brand-primary);
  --bs-btn-active-bg: var(--brand-dark);
  --bs-btn-active-border-color: var(--brand-dark);
}
[data-bs-theme="dark"] .btn-outline-brand { --bs-btn-color: color-mix(in srgb, var(--brand-primary) 75%, #fff); }

/* Formularios */
.form-label { font-weight: 500; font-size: .85rem; margin-bottom: .35rem; }
.form-control, .form-select { border-radius: var(--radius-sm); border-color: var(--line); background-color: var(--surface); }
.form-control:focus, .form-select:focus {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 .22rem color-mix(in srgb, var(--brand-primary) 22%, transparent);
}
.form-check-input:checked { background-color: var(--brand-primary); border-color: var(--brand-primary); }

/* Tablas */
.table { --bs-table-bg: transparent; }
.table th {
  font-size: .72rem; font-weight: 600;
  letter-spacing: .05em; text-transform: uppercase;
  color: var(--text-muted);
  background: var(--surface-muted);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
.table td { vertical-align: middle; border-color: var(--line); }
.table-hover > tbody > tr:hover > * { --bs-table-bg-state: var(--brand-light); }

.badge { font-weight: 500; padding: .38em .7em; border-radius: 999px; }

/* Modales y alertas */
.modal-content { border: 0; border-radius: var(--radius); box-shadow: var(--shadow-md); background: var(--surface); }
.modal-header { background: var(--brand-light); border-bottom: 1px solid var(--line); }
.modal-header .modal-title { font-weight: 600; }
.alert { border: 0; border-left: 4px solid; border-radius: var(--radius-sm); }
.alert-success { border-left-color: var(--brand-primary); }
.alert-danger  { border-left-color: var(--brand-danger); }
.alert-warning { border-left-color: var(--brand-warning); }
.alert-info    { border-left-color: var(--brand-info); }

/* Tarjetas seleccionables (reportes, portales) */
.report-card { cursor: pointer; transition: border-color .2s, box-shadow .2s, transform .2s; }
.report-card:hover { border-color: var(--brand-primary); box-shadow: var(--shadow-md); transform: translateY(-2px); }

/* Fila "sin datos" (evita colspan que rompe DataTables) */
.tabla-vacia-mensaje { text-align: center; padding: 2rem 1rem; color: var(--text-muted); font-style: italic; }
tr.fila-vacia td { display: none; }

/* 5. Integraciones --------------------------------------------------------- */
.dataTables_wrapper .dataTables_filter input,
.dataTables_wrapper .dataTables_length select {
  border: 1px solid var(--line); border-radius: var(--radius-sm); padding: .375rem .75rem;
  background-color: var(--surface); color: var(--text);
}
.page-item.active .page-link { background-color: var(--brand-primary); border-color: var(--brand-primary); }
.page-link { color: var(--brand-dark); }

.select2-container--bootstrap-5 .select2-selection { min-height: 38px; border-radius: var(--radius-sm); }
[data-bs-theme="dark"] .select2-container--bootstrap-5 .select2-selection,
[data-bs-theme="dark"] .select2-container--bootstrap-5 .select2-dropdown { background: var(--surface); color: var(--text); border-color: var(--line); }

.fc { --fc-border-color: var(--line); --fc-page-bg-color: transparent; --fc-neutral-bg-color: var(--surface-muted); --fc-today-bg-color: var(--brand-light); }
.fc-toolbar-title { font-size: 1.2rem !important; font-weight: 600 !important; }
.fc-button-primary { background-color: var(--brand-primary) !important; border-color: var(--brand-primary) !important; border-radius: var(--radius-sm) !important; }
.fc-button-primary:not(:disabled).fc-button-active,
.fc-button-primary:not(:disabled):active { background-color: var(--brand-dark) !important; border-color: var(--brand-dark) !important; }
.fc-event { border: none; padding: 2px 4px; font-size: .85rem; cursor: pointer; border-radius: 6px; }
.fc-event-presencial { background-color: var(--brand-primary); border-color: var(--brand-primary); }
.fc-event-online { background-color: var(--brand-info); border-color: var(--brand-info); }

/* 6. Páginas específicas --------------------------------------------------- */
/* Login */
.login-page {
  min-height: 100vh; display: grid; place-items: center; padding: 1rem;
  background:
    radial-gradient(circle at 20% 15%, color-mix(in srgb, var(--brand-primary) 45%, transparent), transparent 45%),
    radial-gradient(circle at 85% 85%, color-mix(in srgb, var(--brand-dark) 60%, transparent), transparent 50%),
    var(--sidebar-bg);
}
.login-card { width: 100%; max-width: 420px; border-radius: 20px; overflow: hidden; background: var(--surface); box-shadow: 0 24px 64px rgb(0 0 0 / .35); }
.login-card .card-body { padding: 2.5rem; }
.login-logo { text-align: center; margin-bottom: 2rem; }
.login-logo h2 { font-weight: 700; letter-spacing: -.02em; }
.login-logo p { color: var(--text-muted); font-size: .9rem; margin: 0; }
.login-footer { text-align: center; margin-top: 1.5rem; font-size: .85rem; color: var(--text-muted); }

/* Calendario */
.calendar-toolbar { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: .5rem; margin-bottom: 1rem; }
.appointment-detail { padding: .5rem 0; }
.appointment-detail .row { margin-bottom: .5rem; }
.appointment-detail .label { font-weight: 600; font-size: .85rem; color: var(--text-muted); }

/* Ficha de paciente */
.patient-info-label { font-size: .75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: .05em; font-weight: 600; }
.patient-info-value { font-weight: 500; margin-bottom: 1rem; }

/* Receta */
.prescription-header { text-align: center; padding: 1.5rem; border-bottom: 2px solid var(--brand-primary); margin-bottom: 1.5rem; }

.notification-badge { position: absolute; top: -5px; right: -5px; font-size: .65rem; padding: .2rem .4rem; }

/* 7. Utilidades / animaciones / impresión ---------------------------------- */
.fade-in { animation: fadeIn .3s ease-in; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }

@media print {
  .sidebar, .page-header, .btn, .no-print { display: none !important; }
  .main-content { margin-left: 0 !important; }
  .card { box-shadow: none !important; border: 1px solid #ddd !important; }
  body { background: #fff; color: #000; }
}