/* Estilos personalizados para la aplicación de Programación Lineal */

/* Importar fuentes modernas de Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Poppins:wght@300;400;500;600;700;800&display=swap');

/* Variables CSS para consistencia y tema */
:root {
    /* Colores base de Bootstrap */
    --primary-color: #0d6efd;
    --success-color: #198754;
    --info-color: #0dcaf0;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --dark-color: #212529;
    --light-color: #f8f9fa;
    
    /* Colores por método */
    --color-grafico: #2563eb;      /* Azul brillante para Método Gráfico */
    --color-grafico-light: #3b82f6;
    --color-grafico-dark: #1e40af;
    
    --color-simplex: #16a34a;      /* Verde vibrante para Método Simplex */
    --color-simplex-light: #22c55e;
    --color-simplex-dark: #15803d;
    
    --color-dual: #9333ea;         /* Púrpura elegante para Dual Simplex */
    --color-dual-light: #a855f7;
    --color-dual-dark: #7e22ce;
    
    --color-two-phase: #f97316;    /* Naranja coral para Dos Fases */
    --color-two-phase-light: #fb923c;
    --color-two-phase-dark: #ea580c;
    
    --color-transport: #dc2626;    /* Rojo coral para Transporte */
    --color-transport-light: #ef4444;
    --color-transport-dark: #b91c1c;
    
    /* Sombras y efectos */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Variables para modo claro */
    --bg-color: #f8f9fa;
    --bg-secondary: #ffffff;
    --text-color: #212529;
    --text-secondary: #6c757d;
    --card-bg: #ffffff;
    --border-color: #dee2e6;
    --navbar-bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    
    /* Transiciones */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Variables para modo oscuro */
[data-theme="dark"] {
    --bg-color: #0f172a;
    --bg-secondary: #1e293b;
    --text-color: #e2e8f0;
    --text-secondary: #94a3b8;
    --card-bg: #1e293b;
    --border-color: #334155;
    --navbar-bg: linear-gradient(135deg, #4c1d95 0%, #581c87 100%);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
}

/* Estilos generales con tipografía mejorada */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    font-size: 16px;
    transition: background-color var(--transition-base), color var(--transition-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 0.75rem;
}

h1 { font-size: 2.5rem; font-weight: 700; }
h2 { font-size: 2rem; font-weight: 700; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

/* Navbar con gradiente */
.navbar-dark {
    background: var(--navbar-bg) !important;
    box-shadow: var(--shadow-md);
}

.navbar-brand {
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: -0.5px;
}

.navbar-nav .nav-link {
    font-weight: 500;
    transition: all var(--transition-fast);
    position: relative;
    padding: 0.5rem 1rem !important;
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: #ffc107;
    transition: all var(--transition-base);
    transform: translateX(-50%);
}

.navbar-nav .nav-link:hover::after {
    width: 80%;
}

.navbar-nav .nav-link:hover {
    color: #ffc107 !important;
    transform: translateY(-2px);
}

/* ============================================
   CLASES ESPECÍFICAS POR MÉTODO
   ============================================ */

/* Método Gráfico - Azul */
.method-grafico .card-header,
.method-grafico .btn-primary {
    background: linear-gradient(135deg, var(--color-grafico) 0%, var(--color-grafico-light) 100%) !important;
    border: none;
}

.method-grafico h2,
.method-grafico .text-method-grafico {
    color: var(--color-grafico);
}

.method-grafico .badge-grafico {
    background-color: var(--color-grafico);
    color: white;
}

.method-grafico .alert-info {
    background-color: rgba(37, 99, 235, 0.1);
    border-left: 4px solid var(--color-grafico);
    color: var(--text-color);
}

/* Método Simplex - Verde */
.method-simplex .card-header,
.method-simplex .btn-success,
.bg-success-simplex {
    background: linear-gradient(135deg, var(--color-simplex) 0%, var(--color-simplex-light) 100%) !important;
    border: none;
}

.method-simplex h2,
.method-simplex .text-method-simplex,
.text-simplex {
    color: var(--color-simplex);
}

.method-simplex .badge-simplex {
    background-color: var(--color-simplex);
    color: white;
}

.method-simplex .table-success thead {
    background-color: var(--color-simplex) !important;
    color: white;
}

.method-simplex .alert-info {
    background-color: rgba(22, 163, 74, 0.1);
    border-left: 4px solid var(--color-simplex);
    color: var(--text-color);
}

/* Método Dual Simplex - Púrpura */
.method-dual .card-header,
.method-dual .btn-info,
.bg-info-dual {
    background: linear-gradient(135deg, var(--color-dual) 0%, var(--color-dual-light) 100%) !important;
    border: none;
}

.method-dual h2,
.method-dual .text-method-dual,
.text-dual {
    color: var(--color-dual);
}

.method-dual .badge-dual {
    background-color: var(--color-dual);
    color: white;
}

.method-dual .table-info thead {
    background-color: var(--color-dual) !important;
    color: white;
}

.method-dual .alert-info {
    background-color: rgba(147, 51, 234, 0.1);
    border-left: 4px solid var(--color-dual);
    color: var(--text-color);
}

/* Método Simplex Dos Fases - Naranja Coral */
.method-two-phase .card-header,
.method-two-phase .btn-two-phase,
.bg-method-two-phase,
.bg-two-phase {
    background: linear-gradient(135deg, var(--color-two-phase) 0%, var(--color-two-phase-light) 100%) !important;
    border: none;
    color: white !important;
}

.method-two-phase h2,
.method-two-phase .text-method-two-phase,
.text-two-phase {
    color: var(--color-two-phase);
}

.method-two-phase .badge-two-phase {
    background-color: var(--color-two-phase);
    color: white;
}

.method-two-phase .table-warning thead {
    background-color: var(--color-two-phase) !important;
    color: white;
}

.method-two-phase .alert-info {
    background-color: rgba(249, 115, 22, 0.1);
    border-left: 4px solid var(--color-two-phase);
    color: var(--text-color);
}

.border-two-phase {
    border-color: var(--color-two-phase) !important;
}

.btn-two-phase {
    background: linear-gradient(135deg, var(--color-two-phase) 0%, var(--color-two-phase-light) 100%);
    border: none;
    color: white;
    font-weight: 600;
    padding: 12px 32px;
    border-radius: 8px;
    transition: all var(--transition-base);
}

.btn-two-phase:hover {
    background: linear-gradient(135deg, var(--color-two-phase-dark) 0%, var(--color-two-phase) 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: white;
}

/* Estilos para Modelo de Transporte */
.text-method-transport {
    color: var(--color-transport) !important;
}

.bg-method-transport {
    background-color: var(--color-transport) !important;
}

.border-transport {
    border-color: var(--color-transport) !important;
}

.btn-transport {
    background: linear-gradient(135deg, var(--color-transport) 0%, var(--color-transport-light) 100%);
    border: none;
    color: white;
    font-weight: 600;
    padding: 12px 32px;
    border-radius: 8px;
    transition: all var(--transition-base);
}

.btn-transport:hover {
    background: linear-gradient(135deg, var(--color-transport-dark) 0%, var(--color-transport) 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: white;
}

.method-transport .btn-transport,
.method-transport .card-body {
    border-color: var(--color-transport);
}

.method-transport:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(147, 51, 234, 0.2);
}

/* Cards con efectos mejorados */
.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.card-header {
    border-radius: 16px 16px 0 0 !important;
    font-weight: 600;
    padding: 1.25rem 1.5rem;
    font-family: 'Poppins', sans-serif;
}

.card-body {
    padding: 1.5rem;
}

/* Formularios mejorados */
.form-label {
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    font-family: 'Poppins', sans-serif;
}

.form-control, .form-select {
    border-radius: 12px;
    border: 2px solid var(--border-color);
    transition: all var(--transition-base);
    padding: 0.75rem 1rem;
    font-size: 1rem;
    background-color: var(--bg-secondary);
    color: var(--text-color);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.15);
    background-color: var(--card-bg);
}

.form-control::placeholder {
    color: var(--text-secondary);
    opacity: 0.7;
}

/* Textarea especial para restricciones */
textarea.form-control {
    font-family: 'Courier New', monospace;
    line-height: 1.8;
    resize: vertical;
}

/* Botones personalizados con animaciones */
.btn {
    border-radius: 12px;
    font-weight: 600;
    padding: 0.65rem 1.75rem;
    transition: all var(--transition-base);
    border: none;
    font-family: 'Poppins', sans-serif;
    letter-spacing: 0.3px;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.btn:active {
    transform: translateY(-1px);
}

.btn-lg {
    padding: 0.9rem 2.25rem;
    font-size: 1.1rem;
}

.btn-primary {
    background: linear-gradient(135deg, #0d6efd 0%, #4dabf7 100%);
}

.btn-success {
    background: linear-gradient(135deg, var(--color-simplex) 0%, var(--color-simplex-light) 100%);
}

.btn-info {
    background: linear-gradient(135deg, var(--color-dual) 0%, var(--color-dual-light) 100%);
}

.btn-warning {
    background: linear-gradient(135deg, #ffc107 0%, #ffd43b 100%);
    color: #000;
}

.btn-secondary {
    background: linear-gradient(135deg, #6c757d 0%, #adb5bd 100%);
}

/* Alertas mejoradas */
.alert {
    border-radius: 12px;
    border: none;
    font-weight: 500;
    padding: 1rem 1.25rem;
    box-shadow: var(--shadow-sm);
    animation: slideInDown 0.4s ease-out;
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Iconos con espaciado */
.fas, .far, .fa {
    margin-right: 0.5rem;
}

/* Animación de entrada para cards */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card {
    animation: fadeInUp 0.6s ease-out;
}

/* Tablas de resultados mejoradas */
.table {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    background-color: var(--card-bg);
    color: var(--text-color);
}

.table thead th {
    border-bottom: 3px solid var(--primary-color);
    background-color: var(--bg-secondary);
    font-weight: 700;
    font-family: 'Poppins', sans-serif;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    padding: 1rem;
}

.table tbody td {
    padding: 0.85rem 1rem;
    vertical-align: middle;
}

.table-hover tbody tr:hover {
    background-color: var(--bg-secondary);
    transform: scale(1.01);
    transition: all var(--transition-fast);
}

.table-success thead {
    background-color: var(--color-simplex) !important;
    color: white;
}

.table-info thead {
    background-color: var(--color-dual) !important;
    color: white;
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: rgba(0, 0, 0, 0.02);
}

[data-theme="dark"] .table-striped tbody tr:nth-of-type(odd) {
    background-color: rgba(255, 255, 255, 0.02);
}

.table-success td {
    font-weight: 600;
}

/* Imagen de resultados gráfico */
.img-fluid {
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.img-fluid:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-xl);
}

/* Badges personalizados */
.badge {
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

/* Footer moderno */
footer {
    margin-top: auto;
    background-color: var(--bg-secondary) !important;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 2rem 0;
}

/* Lista de restricciones */
.list-group-item {
    border-radius: 10px !important;
    margin-bottom: 0.5rem;
    border: 1px solid var(--border-color);
    font-family: 'Courier New', monospace;
    background-color: var(--bg-secondary);
    color: var(--text-color);
    padding: 0.75rem 1rem;
    transition: all var(--transition-fast);
}

.list-group-item:hover {
    background-color: var(--card-bg);
    transform: translateX(5px);
}

/* Código inline */
code {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.2rem 0.5rem;
    font-size: 0.9rem;
    color: var(--text-color);
    font-weight: 500;
}

/* Botón toggle de modo oscuro */
#darkModeToggle {
    border-radius: 50%;
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

#darkModeToggle:hover {
    transform: rotate(180deg) scale(1.15);
    background: rgba(255, 255, 255, 0.2);
}

/* Accordion mejorado para iteraciones */
.accordion-button {
    border-radius: 12px !important;
    font-weight: 600;
    font-family: 'Poppins', sans-serif;
    transition: all var(--transition-base);
}

.accordion-button:not(.collapsed) {
    background-color: var(--bg-secondary);
    color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.accordion-button:focus {
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.15);
}

.accordion-item {
    border: 1px solid var(--border-color);
    border-radius: 12px !important;
    margin-bottom: 0.75rem;
    overflow: hidden;
    background-color: var(--card-bg);
}

.accordion-body {
    padding: 1.5rem;
}

/* Highlighting para pivotes y elementos especiales en tablas */
.pivot-row {
    background-color: rgba(255, 193, 7, 0.15) !important;
    font-weight: 700;
}

.pivot-col {
    background-color: rgba(13, 110, 253, 0.15) !important;
    font-weight: 700;
}

.pivot-element {
    background-color: rgba(220, 53, 69, 0.25) !important;
    font-weight: 900;
    font-size: 1.1em;
    color: #dc3545;
    border: 2px solid #dc3545;
}

.negative-rhs {
    background-color: rgba(220, 53, 69, 0.15) !important;
    color: #dc3545;
    font-weight: 700;
}

/* Responsividad mejorada */
@media (max-width: 768px) {
    .display-4, .display-5 {
        font-size: 2rem;
    }
    
    .card-body {
        padding: 1.25rem;
    }
    
    .btn-lg {
        padding: 0.75rem 1.75rem;
        font-size: 1rem;
    }
    
    .navbar-brand {
        font-size: 1.25rem;
    }
    
    .table {
        font-size: 0.9rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
}

@media (max-width: 576px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .btn {
        padding: 0.5rem 1.25rem;
    }
}

/* Estados de carga y feedback visual */
.loading {
    opacity: 0.6;
    pointer-events: none;
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 30px;
    height: 30px;
    border: 3px solid rgba(13, 110, 253, 0.3);
    border-top-color: #0d6efd;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    transform: translate(-50%, -50%);
}

@keyframes spin {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Scrollbar personalizado (Webkit) */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-color), var(--color-simplex));
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--color-dual), var(--primary-color));
}

/* Utilidades adicionales */
.text-gradient {
    background: linear-gradient(135deg, var(--primary-color), var(--color-simplex));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.blur-bg {
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.glass-effect {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

[data-theme="dark"] .glass-effect {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Animación de pulso para elementos importantes */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.05);
    }
}

.pulse-animation {
    animation: pulse 2s ease-in-out infinite;
}
/* Efectos hover para iconos */
.fas:hover {
    transform: scale(1.1);
    transition: transform 0.2s ease;
}

/* Estilo para números en la página about */
.fas.fa-1:before { content: "1"; }
.fas.fa-2:before { content: "2"; }  
.fas.fa-3:before { content: "3"; }
.fas.fa-4:before { content: "4"; }

/* Colores para diferentes tipos de optimización */
.optimization-max {
    color: var(--success-color);
}

.optimization-min {
    color: var(--info-color);
}

/* Estilo para las restricciones en el código */
.constraint-code {
    background-color: #f1f3f4;
    padding: 0.5rem;
    border-left: 4px solid var(--primary-color);
    font-family: 'Courier New', monospace;
    margin: 0.25rem 0;
}
/* ========================================
   ESTILOS PARA IMPRESI�N (Print Styles)
   ======================================== */
@media print {
    /* Ocultar elementos de navegaci�n y botones */
    .navbar, 
    .no-print, 
    .btn, 
    footer,
    .accordion-button::after {
        display: none !important;
    }
    
    /* Forzar que los botones dentro de .no-print se oculten */
    .no-print * {
        display: none !important;
    }
    
    /* Ajustar el body para impresi�n */
    body {
        background-color: white !important;
        color: black !important;
        font-size: 12pt;
        line-height: 1.5;
    }
    
    /* Cards sin sombras y con bordes simples */
    .card {
        border: 2px solid #333 !important;
        box-shadow: none !important;
        margin-bottom: 15px;
        page-break-inside: avoid;
    }
    
    .card-header {
        background-color: #f0f0f0 !important;
        color: #000 !important;
        border-bottom: 2px solid #333 !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
    
    /* Tablas con bordes visibles */
    table {
        border-collapse: collapse !important;
        width: 100% !important;
        page-break-inside: avoid;
    }
    
    table th,
    table td {
        border: 1px solid #333 !important;
        padding: 8px !important;
    }
    
    table thead {
        background-color: #e0e0e0 !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
    
    /* Accordion expandido para mostrar todo */
    .accordion-collapse {
        display: block !important;
        height: auto !important;
    }
    
    .accordion-item {
        border: 1px solid #333 !important;
        page-break-inside: avoid;
        margin-bottom: 10px;
    }
    
    .accordion-button {
        background-color: #f5f5f5 !important;
        color: #000 !important;
        font-weight: bold;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
    
    .accordion-button:not(.collapsed) {
        background-color: #e0e0e0 !important;
    }
    
    /* Alerts con bordes y fondos claros */
    .alert {
        border: 2px solid #333 !important;
        background-color: #f9f9f9 !important;
        color: #000 !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
    
    .alert-success {
        border-color: #28a745 !important;
        background-color: #d4edda !important;
    }
    
    .alert-info {
        border-color: #17a2b8 !important;
        background-color: #d1ecf1 !important;
    }
    
    /* Badges visibles */
    .badge {
        border: 1px solid #000 !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
    
    /* T�tulos y encabezados */
    h1, h2, h3, h4, h5, h6 {
        color: #000 !important;
        page-break-after: avoid;
    }
    
    /* Links sin color azul */
    a {
        color: #000 !important;
        text-decoration: none !important;
    }
    
    /* Evitar cortes de p�gina molestos */
    h2, h3, h4, h5, h6 {
        page-break-after: avoid;
    }
    
    ul, ol, img {
        page-break-inside: avoid;
    }
    
    /* Agregar m�rgenes de p�gina */
    @page {
        margin: 2cm;
    }
    
    /* Container full width para impresi�n */
    .container, .container-fluid {
        width: 100% !important;
        max-width: 100% !important;
    }
}

/* ========================================
   SPINNER DE CARGA Y ANIMACIONES UX
   ======================================== */

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
}

.spinner-container {
    text-align: center;
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Animaciones suaves para elementos interactivos */
.btn, .card, .form-control, .form-select {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.btn:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.15);
    transform: scale(1.01);
}

/* Tooltips personalizados con Bootstrap */
.tooltip-inner {
    background-color: var(--dark-color);
    border-radius: 8px;
    padding: 8px 12px;
    font-size: 0.875rem;
    max-width: 300px;
}

.tooltip.bs-tooltip-top .tooltip-arrow::before {
    border-top-color: var(--dark-color);
}

.tooltip.bs-tooltip-end .tooltip-arrow::before {
    border-right-color: var(--dark-color);
}

.tooltip.bs-tooltip-bottom .tooltip-arrow::before {
    border-bottom-color: var(--dark-color);
}

.tooltip.bs-tooltip-start .tooltip-arrow::before {
    border-left-color: var(--dark-color);
}

/* Animaciones para entrada de contenido */
.fade-in {
    animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Feedback visual en formularios */
.form-control.is-valid, .form-select.is-valid {
    border-color: var(--success-color);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%23198754' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e");
}

.form-control.is-invalid, .form-select.is-invalid {
    border-color: var(--danger-color);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23dc3545' stroke='none'/%3e%3c/svg%3e");
}

/* Mensajes de error mejorados */
.error-message {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background-color: rgba(220, 53, 69, 0.1);
    border-left: 4px solid var(--danger-color);
    border-radius: 8px;
    color: var(--danger-color);
    margin-bottom: 16px;
    animation: shake 0.4s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

/* Responsive mejoras para m�vil */
@media (max-width: 768px) {
    .card {
        margin-bottom: 1rem;
    }
    
    .btn-lg {
        font-size: 1rem;
        padding: 0.5rem 1rem;
    }
    
    h1, .display-5 {
        font-size: 1.75rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .table-responsive {
        font-size: 0.875rem;
    }
    
    .container {
        padding-left: 15px;
        padding-right: 15px;
    }
}

/* Mejoras de accesibilidad */
.btn:focus-visible, .form-control:focus-visible, .form-select:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Indicador de campo requerido */
.required-field::after {
    content: ' *';
    color: var(--danger-color);
    font-weight: bold;
}

/* Estados de hover para tablas */
.table-hover tbody tr:hover {
    background-color: rgba(0, 0, 0, 0.03);
    transform: scale(1.01);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}