:root {
    /* --- Modern SaaS Color Palette --- */
    --primary: #4f46e5;
    /* Indigo 600 */
    --primary-hover: #4338ca;
    /* Indigo 700 */
    --primary-contrast: #ffffff;
    --secondary: #0ea5e9;
    /* Sky 500 */
    --accent: #f59e0b;
    /* Amber 500 */

    --bg-body: #f8fafc;
    /* Slate 50 */
    --bg-card: #ffffff;
    --bg-nav: #1e293b;
    /* Slate 800 */

    --text-main: #0f172a;
    /* Slate 900 */
    --text-muted: #64748b;
    /* Slate 500 */
    --text-light: #f1f5f9;
    /* Slate 100 */

    --border-color: #e2e8f0;
    /* Slate 200 */
    --border-focus: #4f46e5;

    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;

    /* --- UI Properties --- */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    --font-main: 'Inter', system-ui, -apple-system, sans-serif;
    --transition: all 200ms ease-in-out;
}

/* --- Reset & Base --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-body);
    font-family: var(--font-main);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    font-size: 15px;
}

/* 13/02/2026 12:11 - Ing. Walter Rodríguez
 * Logo Global: OBSOLETO para vistas admin. El logo absolute causaba
 * sobreposición sobre botones y el menú de navegación en todas las vistas.
 * Se mantiene para vistas sin nav (login, kiosk, registro).
 * En vistas admin, se oculta y se usa .nav-logo dentro del <nav>.
 */
.global-logo {
    position: absolute;
    top: 15px;
    right: 20px;
    max-height: 60px;
    max-width: 200px;
    width: auto;
    height: auto;
    object-fit: contain;
    z-index: 100;
}

.logo-link {
    position: absolute;
    top: 15px;
    right: 20px;
    z-index: 100;
    display: inline-block;
}

/* 13/02/2026 - Fix global: Ocultar logo absoluto cuando hay un contenedor de app,
   ya que el logo se integra dentro del <nav> para evitar sobreposición */
.admin-container~.logo-link,
.admin-container .logo-link,
body:has(.admin-container)>.logo-link,
.guard-container~.logo-link,
.guard-container .logo-link,
body:has(.guard-container)>.logo-link {
    display: none !important;
}

/* 13/02/2026 - Logo dentro del nav: parte del flujo flex, sin sobreposición */
.nav-logo {
    max-height: 40px;
    width: auto;
    object-fit: contain;
    flex-shrink: 0;
    transition: opacity 0.2s ease;
}

.nav-logo:hover {
    opacity: 0.85;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--text-main);
    font-weight: 700;
    margin-bottom: 0.75rem;
    line-height: 1.25;
}

h1 {
    font-size: 1.875rem;
    letter-spacing: -0.025em;
}

h2 {
    font-size: 1.5rem;
    letter-spacing: -0.025em;
}

h3 {
    font-size: 1.25rem;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--primary-hover);
}

/* --- Layout Containers --- */
.admin-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.content {
    flex: 1;
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

.max-w-500 {
    max-width: 500px;
}

.mx-auto {
    margin-left: auto !important;
    margin-right: auto !important;
}

.form-container-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

/* --- Modern Cards --- */
.card,
.dashboard-card,
.login-container {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    margin-bottom: 1.5rem;
}

.dashboard-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* --- Buttons & Links --- */
.btn,
.btn-primary,
button[type="submit"],
.button-link,
.btn-premium {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1.25rem;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    background-color: var(--primary);
    color: var(--primary-contrast) !important;
    text-decoration: none;
    gap: 8px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.btn:hover,
button[type="submit"]:hover,
.button-link:hover,
.btn-premium:hover {
    background-color: var(--primary-hover);
    color: var(--primary-contrast) !important;
    transform: translateY(-1px);
    box-shadow: 0 4px 6px -1px rgba(79, 70, 229, 0.3);
}

.btn:active,
button[type="submit"]:active {
    transform: translateY(0);
}

.btn:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.btn-secondary {
    background-color: white;
    color: var(--text-main) !important;
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: #f8fafc;
    border-color: #cbd5e1;
}

.btn-danger {
    background-color: var(--danger);
}

.btn-danger:hover {
    background-color: #dc2626;
}

.btn-icon {
    padding: 8px;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    transition: var(--transition);
}

.btn-icon:hover {
    background-color: #f1f5f9;
    color: var(--primary);
}

/* --- Forms --- */
.form-group {
    margin-bottom: 1.25rem;
}

label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 0.5rem;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="date"],
input[type="datetime-local"],
select,
textarea {
    width: 100%;
    padding: 0.625rem 0.875rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--text-main);
    background-color: var(--bg-card);
    transition: var(--transition);
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--border-focus);
    outline: none;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

/* --- Tables --- */
.table-responsive {
    overflow-x: auto;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: var(--bg-card);
}

th {
    background-color: #f8fafc;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    text-align: left;
}

td {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-main);
    font-size: 0.9rem;
    vertical-align: middle;
}

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    background-color: #f8fafc;
}

/* --- Navigation & Menu (Desktop & Mobile) --- */
.admin-container nav {
    background: var(--bg-nav);
    padding: 0 1.5rem;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.main-menu {
    display: flex;
    list-style: none;
    gap: 2px;
    height: 100%;
    align-items: center;
}

.main-menu>li {
    height: 100%;
    display: flex;
    align-items: center;
    position: relative;
}

.main-menu>li>a {
    color: #cbd5e1;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    transition: var(--transition);
    border: 1px solid transparent;
}

.main-menu>li>a:hover,
.main-menu>li>a.active {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

/* Submenus */
.submenu {
    position: absolute;
    top: 100%;
    left: 0;
    background: #252538;
    min-width: 220px;
    border-radius: var(--radius-md);
    padding: 0.5rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    display: none !important;
    z-index: 1001;
}

.has-submenu:hover .submenu {
    display: block !important;
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.submenu li {
    list-style: none;
}

.submenu a {
    display: block;
    padding: 0.6rem 1rem;
    color: #cbd5e1;
    font-size: 0.9rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
}

.submenu a:hover {
    background: var(--primary);
    color: var(--primary-contrast);
    padding-left: 1.25rem;
    /* Slide effect */
}

/* Fix Giant Logo in Dashboard */
.logo-container img,
.company-logo,
.dashboard-header img {
    max-height: 80px;
    max-width: 220px;
    width: auto;
    object-fit: contain;
}

/* Hamburger UI */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
}

/* --- Messages --- */
.success-message,
.error-message {
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
}

.success-message {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.error-message {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

/* --- Badges --- */
.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.badge-success {
    background: #dcfce7;
    color: #166534;
}

.badge-danger {
    background: #fee2e2;
    color: #991b1b;
}

.badge-warning {
    background: #fef3c7;
    color: #b45309;
}

/* --- Responsive Design --- */
@media (max-width: 1024px) {
    .content {
        padding: 1rem;
    }

    .mobile-menu-toggle {
        display: block;
        z-index: 1002;
    }

    .main-menu {
        position: fixed;
        top: 0;
        right: -100%;
        /* Hidden by default */
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: #1e293b;
        flex-direction: column;
        padding: 5rem 1rem 2rem 1rem;
        transition: right 0.3s ease-in-out;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.5);
        align-items: flex-start;
        overflow-y: auto;
        gap: 0.5rem;
    }

    .main-menu.mobile-open {
        right: 0;
    }

    .main-menu>li {
        width: 100%;
        height: auto;
        flex-direction: column;
        align-items: flex-start;
    }

    .main-menu>li>a {
        width: 100%;
        padding: 0.75rem;
        font-size: 1rem;
    }

    /* Mobile Submenu */
    .submenu {
        position: static;
        width: 100%;
        background: rgba(0, 0, 0, 0.2);
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        border: none;
        display: none !important;
        /* Hidden by default in accordion style */
        padding-left: 1rem;
    }

    .has-submenu.active .submenu {
        display: block !important;
    }

    /* Toggle Icon Day/Night positioning on Mobile */
    #high-contrast-toggle-icon {
        margin-right: 15px;
    }
}

/* --- High Contrast / Dark Mode Overlay --- */
/* Autor: Ing. Walter Rodríguez
 * Fecha: 13/02/2026
 * Objetivo: Reglas extendidas para modo noche que sobrescriben estilos inline
 * hardcodeados en los dashboards de admin y host, garantizando legibilidad
 * de títulos, tarjetas, modales y tablas en modo oscuro.
 */
body.high-contrast {
    --bg-body: #0f172a;
    --bg-card: #1e293b;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border-color: #334155;
}

/* Fix: Header del dashboard admin con background: white inline */
body.high-contrast .dashboard-header {
    background: var(--bg-card) !important;
    border-color: var(--border-color) !important;
}

/* Fix: Título h1 dentro del header debe ser legible en fondo oscuro */
body.high-contrast .dashboard-header h1 {
    color: var(--text-main) !important;
}

/* Fix: Todos los headings deben respetar el modo noche */
body.high-contrast h1,
body.high-contrast h2,
body.high-contrast h3,
body.high-contrast h4 {
    color: var(--text-main) !important;
}

/* Fix: Texto de contenido y párrafos */
body.high-contrast .content,
body.high-contrast .content p,
body.high-contrast .content li {
    color: var(--text-main) !important;
}

/* Fix: Stat cards con background-color: #fff inline */
body.high-contrast .stat-card,
body.high-contrast .clickable-stat {
    background-color: var(--bg-card) !important;
    border-color: var(--border-color) !important;
}

/* Fix: Subtítulos h3 de stat cards con color: #666 inline */
body.high-contrast .stat-card h3,
body.high-contrast .clickable-stat h3 {
    color: var(--text-muted) !important;
}

/* Fix: Modal content con background-color: white inline */
body.high-contrast .modal-content {
    background-color: var(--bg-card) !important;
    color: var(--text-main) !important;
    border-color: var(--border-color) !important;
}

/* Fix: Título del modal con color: #343a40 inline */
body.high-contrast #modal-title {
    color: var(--text-main) !important;
    border-color: var(--border-color) !important;
}

/* Fix: Encabezados de tablas en modales */
body.high-contrast .modal-table th {
    background-color: #334155 !important;
    color: #f8fafc !important;
}

/* Fix: Celdas de tablas en modales */
body.high-contrast .modal-table td {
    border-color: var(--border-color) !important;
    color: var(--text-main) !important;
}

/* Fix: Hover en filas de tablas */
body.high-contrast tr:hover td {
    background-color: #334155 !important;
}

/* Fix: Cajas de búsqueda con background: #fff inline */
body.high-contrast .search-box {
    background: var(--bg-card) !important;
    border-color: var(--border-color) !important;
}

body.high-contrast .search-box input {
    color: var(--text-main) !important;
}

/* Fix: Dashboard cards del visitor dashboard */
body.high-contrast .dashboard-card {
    background-color: var(--bg-card) !important;
    border-color: var(--border-color) !important;
}

/* Fix: KPI cards del analytics dashboard */
body.high-contrast .kpi-card {
    background-color: var(--bg-card) !important;
}

/* Fix: Dashboard sections del guard dashboard */
body.high-contrast .dashboard-section {
    background-color: var(--bg-card) !important;
}

/* Fix: Tablas generales */
body.high-contrast table {
    border-color: var(--border-color) !important;
}

body.high-contrast th {
    background-color: #334155 !important;
    color: #f8fafc !important;
    border-color: var(--border-color) !important;
}

body.high-contrast td {
    color: var(--text-main) !important;
    border-color: var(--border-color) !important;
}

/* Fix: Inputs y selects en modo oscuro */
body.high-contrast input[type="text"],
body.high-contrast input[type="email"],
body.high-contrast input[type="password"],
body.high-contrast input[type="date"],
body.high-contrast input[type="datetime-local"],
body.high-contrast select,
body.high-contrast textarea {
    background-color: #0f172a !important;
    color: var(--text-main) !important;
    border-color: var(--border-color) !important;
}

/* Fix: Next visit card del visitor dashboard */
body.high-contrast .next-visit-card {
    background-color: #1a3a2a !important;
    border-color: #28a745 !important;
    color: var(--text-main) !important;
}

body.high-contrast .next-visit-card p {
    color: var(--text-main) !important;
}

/* Fix: Welcome section del visitor dashboard */
body.high-contrast .welcome-section {
    background-color: var(--bg-card) !important;
    color: var(--text-main) !important;
}

/* Fix: Alert cards */
body.high-contrast .alert-success {
    background-color: #1a3a2a !important;
    border-color: #28a745 !important;
    color: #a7f3d0 !important;
}

/* Fix: Labels en formularios */
body.high-contrast label {
    color: var(--text-main) !important;
}

/* Fix: Modal close button */
body.high-contrast .modal-close,
body.high-contrast .close-button {
    color: var(--text-muted) !important;
}

body.high-contrast .modal-close:hover,
body.high-contrast .close-button:hover {
    color: var(--text-main) !important;
}

/* Fix: Botones secundarios en dark mode para contraste y legibilidad */
/* Autor: Ing. Walter Rodríguez - 02/03/2026 */
body.high-contrast .btn-secondary {
    background-color: var(--bg-card) !important;
    color: var(--text-main) !important;
    border-color: var(--border-color) !important;
}

body.high-contrast .btn-secondary:hover {
    background-color: #334155 !important;
}