/**
 * Sistema de Temas - Modo Claro y Oscuro
 * SIHR - Sistema de imputación de actividades y requerimientos
 * Noviembre 2025
 */

/* ============================================
   MODO CLARO (por defecto)
   ============================================ */
:root {
    /* Paleta Moderna 2025 - Clean & Fresh */
    --color-primary: #3b7ec4;
    --color-primary-light: #5a94d4;
    --color-primary-dark: #2d6bad;
    
    --color-secondary: #94a3b8;
    --color-secondary-light: #cbd5e1;
    
    --color-accent: #06b6d4;
    --color-accent-light: #06b6d4;
    
    --color-success: #10b981;
    --color-success-light: #34d399;
    
    --color-warning: #f59e0b;
    --color-warning-light: #fbbf24;
    
    --color-danger: #dc2626;
    --color-info: #3b82f6;
    
    --color-neutral-50: #f8fafc;
    --color-neutral-100: #f1f5f9;
    --color-neutral-200: #e2e8f0;
    --color-neutral-700: #334155;
    --color-neutral-800: #1e293b;
    --color-neutral-900: #0f172a;
    
    /* Variables de tema - Más ligeras y aireadas */
    --bg-body: linear-gradient(135deg, #f8fafc 0%, #ffffff 100%);
    --bg-card: #ffffff;
    --bg-header: linear-gradient(135deg, #3b7ec4 0%, #5a94d4 100%);
    --bg-table-row: #ffffff;
    --bg-table-row-hover: #f0f9ff;
    --bg-sidebar: #ffffff;
    --bg-input: #ffffff;
    
    --text-primary: #334155;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --text-on-primary: #ffffff;
    
    --border-color: #e2e8f0;
    --border-color-hover: #06b6d4;
    
    --shadow-sm: 0 2px 8px rgba(59, 126, 196, 0.08);
    --shadow-md: 0 4px 12px rgba(59, 126, 196, 0.1);
    --shadow-lg: 0 8px 24px rgba(59, 126, 196, 0.12);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.15);
}

/* ============================================
   MODO OSCURO
   ============================================ */
[data-theme="dark"] {
    /* Colores principales ajustados para mejor contraste */
    --color-primary: #60a5fa;
    --color-primary-light: #93c5fd;
    --color-primary-dark: #3b82f6;
    
    --color-secondary: #94a3b8;
    --color-secondary-light: #cbd5e1;
    
    --color-accent: #2d6bade;
    --color-accent-light: #2d6bad;
    
    --color-success: #34d399;
    --color-success-light: #6ee7b7;
    
    --color-warning: #fbbf24;
    --color-warning-light: #fcd34d;
    
    --color-danger: #f87171;
    --color-info: #60a5fa;
    
    /* Fondos oscuros - Muy diferentes del modo claro */
    --bg-body: linear-gradient(135deg, #000000 0%, #111827 100%);
    --bg-card: #1f2937;
    --bg-header: linear-gradient(135deg, #111827 0%, #1f2937 100%);
    --bg-table-row: #1f2937;
    --bg-table-row-hover: #374151;
    --bg-sidebar: #1f2937;
    --bg-input: #374151;
    
    /* Textos claros */
    --text-primary: #f9fafb;
    --text-secondary: #e5e7eb;
    --text-muted: #9ca3af;
    --text-on-primary: #ffffff;
    
    /* Bordes sutiles pero visibles */
    --border-color: #374151;
    --border-color-hover: #22d3ee;
    
    /* Sombras más fuertes en oscuro para mejor contraste */
    --shadow-sm: 0 4px 15px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.7);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.8);
}

/* ============================================
   APLICACIÓN DE VARIABLES AL BODY Y ELEMENTOS
   ============================================ */
body {
    background: var(--bg-body);
    color: var(--text-primary);
    transition: background 0.3s ease, color 0.3s ease;
}

/* Cards */
.card-modern {
    background: var(--bg-card);
    border-color: var(--border-color);
    box-shadow: var(--shadow-md);
}

.card-modern .card-header {
    background: var(--bg-header);
    color: var(--text-on-primary);
    padding: 12px 20px;
}

.card-header h5 {
    font-size: 16px;
    font-weight: 500;
    margin: 0;
}

.card-modern .card-body {
    background: var(--bg-card);
    color: var(--text-primary);
}

.card-header-modern {
    background: var(--bg-header);
    color: var(--text-on-primary);
    padding: 12px 20px;
}

.card-header-modern h5 {
    font-size: 16px;
    font-weight: 500;
    margin: 0;
}

.card-body-modern {
    background: var(--bg-card);
    color: var(--text-primary);
}

/* Tablas */
.table-modern {
    background: var(--bg-card);
    border-color: var(--border-color);
    box-shadow: var(--shadow-sm);
}

.table-modern thead {
    background: var(--bg-header);
    color: var(--text-on-primary);
}

.table-modern tbody tr {
    background: var(--bg-table-row);
    color: var(--text-primary);
}

.table-modern tbody tr:hover {
    background: var(--bg-table-row-hover);
}

.table-modern tbody td {
    border-color: var(--border-color);
    color: var(--text-primary);
}

/* Formularios */
.form-control,
select,
input[type="text"],
input[type="password"],
input[type="email"],
input[type="number"],
input[type="date"],
textarea {
    background: var(--bg-input);
    color: var(--text-primary);
    border-color: var(--border-color);
}

.form-control:focus,
select:focus,
input:focus,
textarea:focus {
    border-color: var(--border-color-hover);
    background: var(--bg-input);
}

.form-label {
    color: var(--text-secondary);
}

/* Sidebar */
.sidebar-modern {
    background: var(--bg-sidebar);
    border-color: var(--border-color);
    box-shadow: var(--shadow-sm);
}

.sidebar-modern .menu-item {
    color: var(--text-secondary);
}

.sidebar-modern .menu-item:hover {
    color: var(--color-primary);
}

.sidebar-modern .menu-title {
    background: var(--bg-header);
    color: var(--text-on-primary);
}

/* Login */
.login-card {
    background: var(--bg-card);
    color: var(--text-primary);
    border-color: var(--border-color);
    box-shadow: var(--shadow-xl);
}

.login-header h1 {
    color: var(--color-primary);
}

.login-header p {
    color: var(--text-muted);
}

/* Alertas en modo oscuro */
[data-theme="dark"] .alert-success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15) 0%, rgba(52, 211, 153, 0.15) 100%);
    color: #6ee7b7;
}

[data-theme="dark"] .alert-danger {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.15) 0%, rgba(220, 38, 38, 0.15) 100%);
    color: #fca5a5;
}

[data-theme="dark"] .alert-warning {
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.15) 0%, rgba(252, 211, 77, 0.15) 100%);
    color: #fde68a;
}

[data-theme="dark"] .alert-info {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.15) 0%, rgba(34, 211, 238, 0.15) 100%);
    color: #67e8f9;
}

/* ============================================
   THEME SWITCHER BUTTON - DISABLED
   ============================================ */
.theme-switcher {
    display: none !important; /* Botón de tema deshabilitado */
}

/* Animación de transición suave */
* {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.theme-switcher:hover {
    background: rgba(255, 255, 255, 0.35);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.25);
}

.theme-switcher:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.theme-switcher-icon {
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.4s ease;
    line-height: 1;
}

.theme-switcher-text {
    font-size: 13px;
    font-weight: 700;
    color: white;
    white-space: nowrap;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.theme-switcher:hover .theme-switcher-icon {
    transform: rotate(180deg) scale(1.1);
}

/* Iconos de sol y luna (usando caracteres Unicode) */
.icon-sun::before {
    content: '☀️';
    filter: drop-shadow(0 0 3px rgba(255, 255, 255, 0.8));
}

.icon-moon::before {
    content: '🌙';
    filter: drop-shadow(0 0 3px rgba(255, 255, 255, 0.8));
}

/* Animación de transición suave */
* {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* Estilo especial del botón en modo oscuro */
[data-theme="dark"] .theme-switcher {
    background: rgba(34, 211, 238, 0.2);
    border-color: rgba(34, 211, 238, 0.4);
    box-shadow: 0 2px 12px rgba(34, 211, 238, 0.3);
}

[data-theme="dark"] .theme-switcher:hover {
    background: rgba(34, 211, 238, 0.3);
    border-color: rgba(34, 211, 238, 0.6);
    box-shadow: 0 6px 20px rgba(34, 211, 238, 0.4);
}

[data-theme="dark"] .theme-switcher-text {
    color: #67e8f9;
    text-shadow: 0 0 10px rgba(34, 211, 238, 0.5);
}

/* ============================================
   HEADER ACTION BUTTONS
   ============================================ */
.header-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #ffffff;
    color: #1e3a5f;
    padding: 10px 18px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid #e0e7ff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.header-btn:hover {
    background: #f0f9ff;
    border-color: #c7d2fe;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
    text-decoration: none;
    color: #1e3a5f;
}

.header-btn:active {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.header-btn i {
    font-size: 16px;
    color: #1e3a5f;
}

.header-btn span {
    white-space: nowrap;
    font-weight: 600;
}

/* Estilo especial para el botón de cerrar sesión */
.header-btn-logout {
    background: #e8f1ef;
    border-color: #cadcd8;
    color: #01424c;
}

.header-btn-logout:hover {
    background: #f0f9ff;
    border-color: #c7d2fe;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
    text-decoration: none;
    color: #1e3a5f;
}

.header-btn-logout i {
    color: inherit;
}

/* Estilos en modo oscuro */
[data-theme="dark"] .header-btn {
    background: #3b82f6;
    border-color: #2563eb;
    color: white;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

[data-theme="dark"] .header-btn:hover {
    background: #2563eb;
    border-color: #1d4ed8;
    color: white;
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

[data-theme="dark"] .header-btn i {
    color: white;
}

[data-theme="dark"] .header-btn-logout {
    background: rgba(202, 220, 216, 0.15);
    border-color: #cadcd8;
    color: #e8f1ef;
}

[data-theme="dark"] .header-btn-logout:hover {
    background: #2563eb;
    border-color: #1d4ed8;
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

/* Responsive: ocultar texto en pantallas pequeñas */
@media (max-width: 768px) {
    .header-btn span,
    .theme-switcher-text {
        display: none;
    }
    
    .header-btn {
        padding: 10px;
        min-width: 40px;
        justify-content: center;
    }
    
    .theme-switcher {
        padding: 10px;
        min-width: 40px;
        justify-content: center;
    }
}

/* ============================================
   AJUSTES ADICIONALES PARA MODO OSCURO
   ============================================ */

/* Scrollbar en modo oscuro */
[data-theme="dark"] ::-webkit-scrollbar-track {
    background: #1e293b;
}

[data-theme="dark"] ::-webkit-scrollbar-thumb {
    background: #3b82f6;
}

[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
    background: #60a5fa;
}

/* Header en modo oscuro */
[data-theme="dark"] .header-corporate {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    border-bottom-color: #22d3ee;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .header-corporate .title {
    color: #f9fafb !important;
}

[data-theme="dark"] .header-corporate .title strong {
    color: #60a5fa !important;
}

[data-theme="dark"] .header-corporate .title small {
    color: #e5e7eb !important;
}

[data-theme="dark"] .header-corporate .user-info {
    color: #f9fafb !important;
}

/* Footer en modo oscuro */
[data-theme="dark"] .footer-modern {
    background: linear-gradient(135deg, #0f172a 0%, #000000 100%);
    border-top-color: #22d3ee;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.5);
}

/* Botones en modo oscuro - colores m\u00e1s vibrantes */
[data-theme="dark"] .btn-primary {
    background: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

[data-theme="dark"] .btn-primary:hover {
    background: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%);
    box-shadow: 0 6px 16px rgba(59, 130, 246, 0.6);
}

[data-theme="dark"] .btn-success {
    background: linear-gradient(135deg, #10b981 0%, #34d399 100%);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
}

[data-theme="dark"] .btn-success:hover {
    background: linear-gradient(135deg, #34d399 0%, #10b981 100%);
    box-shadow: 0 6px 16px rgba(16, 185, 129, 0.6);
}

[data-theme="dark"] .btn-danger {
    background: linear-gradient(135deg, #ef4444 0%, #f87171 100%);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.4);
}

[data-theme="dark"] .btn-danger:hover {
    background: linear-gradient(135deg, #f87171 0%, #ef4444 100%);
    box-shadow: 0 6px 16px rgba(239, 68, 68, 0.6);
}

[data-theme="dark"] .btn-info {
    background: linear-gradient(135deg, #06b6d4 0%, #22d3ee 100%);
    box-shadow: 0 4px 12px rgba(6, 182, 212, 0.4);
}

[data-theme="dark"] .btn-info:hover {
    background: linear-gradient(135deg, #22d3ee 0%, #06b6d4 100%);
    box-shadow: 0 6px 16px rgba(6, 182, 212, 0.6);
}

[data-theme="dark"] .btn-warning {
    background: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.4);
    color: #000000;
}

[data-theme="dark"] .btn-warning:hover {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    box-shadow: 0 6px 16px rgba(245, 158, 11, 0.6);
}

[data-theme="dark"] .btn-secondary {
    background: linear-gradient(135deg, #6b7280 0%, #9ca3af 100%);
    box-shadow: 0 4px 12px rgba(107, 114, 128, 0.4);
}

/* Estilos antiguos adaptados */
[data-theme="dark"] .txtBoton {
    background: #0891b2;
    color: #ffffff;
    border-color: #22d3ee;
}

[data-theme="dark"] .txtTituloPrincipal,
[data-theme="dark"] .txtTitulo {
    color: #e2e8f0;
}

[data-theme="dark"] .combo,
[data-theme="dark"] .txtCt,
[data-theme="dark"] .txttexttarea {
    background: var(--bg-input);
    color: var(--text-primary);
    border-color: var(--border-color);
}

/* Tablas antiguas en modo oscuro */
[data-theme="dark"] .td_gris {
    background-color: #374151;
    color: #f9fafb;
}

[data-theme="dark"] .td_b1,
[data-theme="dark"] .td_b2 {
    background-color: #1f2937;
    color: #e5e7eb;
}

[data-theme="dark"] .td_b3 {
    background-color: #111827;
    color: #f9fafb;
    border-color: #22d3ee;
}

/* Cards con mayor contraste en modo oscuro */
[data-theme="dark"] .card-modern {
    background: #1f2937;
    border: 1px solid #374151;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6);
}

[data-theme="dark"] .card-modern:hover {
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.7);
    border-color: #22d3ee;
}

[data-theme="dark"] .card-modern .card-header,
[data-theme="dark"] .card-header-modern {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    border-bottom-color: #22d3ee;
    color: #f9fafb;
}

[data-theme="dark"] .card-modern .card-body,
[data-theme="dark"] .card-body-modern {
    background: #1f2937;
    color: #e5e7eb;
}

/* Tablas con mayor visibilidad en modo oscuro */
[data-theme="dark"] .table-modern {
    background: #1f2937;
    border: 1px solid #374151;
}

[data-theme="dark"] .table-modern thead {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
}

[data-theme="dark"] .table-modern tbody tr {
    background: #1f2937;
    border-bottom-color: #374151;
}

[data-theme="dark"] .table-modern tbody tr:hover {
    background: #374151;
}

[data-theme="dark"] .table-modern tbody td {
    border-bottom-color: #374151;
    color: #e5e7eb;
}

[data-theme="dark"] .table-modern tbody td:first-child {
    background: #374151;
    color: #60a5fa;
}

/* Mejoras de accesibilidad */
.theme-switcher:focus {
    outline: 2px solid var(--color-accent-light);
    outline-offset: 2px;
}

/* Modo de alto contraste opcional */
@media (prefers-contrast: high) {
    [data-theme="dark"] {
        --bg-body: #000000;
        --bg-card: #1a1a1a;
        --text-primary: #ffffff;
        --border-color: #666666;
    }
}

/* Respeta la preferencia del sistema si no hay selección manual */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) {
        /* Las variables permanecen en modo claro por defecto */
        /* El usuario debe activar manualmente el modo oscuro */
    }
}