:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
    --light-color: #f8f9fa;
    --dark-color: #212529;
}

* {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

body {
    background-color: #f5f7fa;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding-top: 0;
}

body:has(.navbar) {
    padding-top: 0;
}

main {
    flex: 1;
    position: relative;
    z-index: 1;
}

/* Cuando hay navbar fixed, agregar margin-top al main para que el contenido no quede debajo */
body:has(.navbar) main {
    margin-top: 56px; /* Altura aproximada del navbar */
}

/* Fallback para navegadores que no soportan :has() */
.navbar ~ main {
    margin-top: 56px;
}

/* Ajuste responsive para el margin-top */
@media (max-width: 991px) {
    body:has(.navbar) main,
    .navbar ~ main {
        margin-top: 56px; /* Altura del navbar colapsado */
    }
}

@media (min-width: 992px) {
    body:has(.navbar) main,
    .navbar ~ main {
        margin-top: 56px; /* Altura del navbar expandido */
    }
}

/* Asegurar que elementos dentro del main no superpongan el navbar */
main {
    z-index: 1 !important;
}

main .card,
main .table,
main .form-control,
main .btn,
main .alert,
main .row,
main .col-lg-6,
main .col-lg-10 {
    position: relative;
    z-index: 1 !important;
}

/* Dropdowns del navbar deben estar por encima */
.navbar .dropdown-menu {
    z-index: 1040 !important;
}

.navbar {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    z-index: 1030 !important;
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    width: 100% !important;
    background-color: #0d6efd !important;
    margin-bottom: 0 !important;
}

/* Asegurar que el navbar esté siempre encima de todo */
.navbar.navbar-expand-lg {
    z-index: 1030 !important;
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
}

.navbar-collapse {
    z-index: 1031 !important;
    position: relative;
}

/* Estilos para el botón hamburguesa */
.navbar-toggler {
    border: none !important;
    padding: 0.25rem 0.5rem !important;
    z-index: 1032 !important;
    position: relative;
    background: transparent !important;
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 0.25rem rgba(255, 255, 255, 0.25) !important;
    outline: none !important;
}

.navbar-toggler:active {
    background: rgba(255, 255, 255, 0.1) !important;
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
    width: 1.5em !important;
    height: 1.5em !important;
}

/* Asegurar que ningún elemento superponga el navbar */
.navbar * {
    position: relative;
    z-index: auto;
}

/* Navbar nav y collapse - solo forzar display en desktop */
@media (min-width: 992px) {
    .navbar-nav {
        display: flex !important;
    }
    
    .navbar-collapse {
        display: flex !important;
    }
}

/* En móvil, permitir que Bootstrap controle la visibilidad */
@media (max-width: 991px) {
    .navbar-collapse {
        display: none !important;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease-out;
    }
    
    .navbar-collapse.show,
    .navbar-collapse.collapsing {
        display: block !important;
        max-height: 500px;
        overflow: visible;
    }
    
    .navbar-collapse.show .navbar-nav {
        display: flex !important;
        flex-direction: column;
        width: 100%;
        padding: 0.5rem 0;
    }
    
    .navbar-nav {
        flex-direction: column;
        width: 100%;
    }
    
    .navbar-nav .nav-item {
        width: 100%;
    }
    
    .navbar-nav .nav-link {
        padding: 0.75rem 1rem;
        width: 100%;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .navbar-nav .nav-link:last-child {
        border-bottom: none;
    }
    
    .navbar-nav .dropdown-menu {
        position: static !important;
        float: none;
        width: 100%;
        margin-top: 0;
        background-color: rgba(0, 0, 0, 0.2);
        border: none;
        box-shadow: none;
    }
    
    .navbar-nav .dropdown-item {
        padding: 0.75rem 1.5rem;
        color: rgba(255, 255, 255, 0.85);
    }
    
    .navbar-nav .dropdown-item:hover {
        background-color: rgba(255, 255, 255, 0.1);
        color: white;
    }
}

.navbar-brand {
    font-size: 1.25rem;
}

.card {
    border: none;
    border-radius: 12px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1) !important;
}

.card-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 12px 12px 0 0 !important;
    font-weight: 600;
}

.btn {
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.2s;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.table {
    background: white;
    border-radius: 8px;
    overflow: hidden;
}

.table thead {
    background-color: #f8f9fa;
}

.table-hover tbody tr:hover {
    background-color: #f1f3f5;
}

.form-control, .form-select {
    border-radius: 8px;
    border: 1px solid #dee2e6;
    transition: all 0.2s;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.15);
}

.alert {
    border-radius: 8px;
    border: none;
}

.badge {
    padding: 0.4em 0.65em;
    font-weight: 500;
}

.stat-card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: all 0.3s;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark-color);
    margin: 0;
}

.stat-label {
    color: var(--secondary-color);
    font-size: 0.9rem;
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.scanner-container {
    position: relative;
    width: 100%;
    max-width: 640px;
    margin: 0 auto;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    z-index: 1;
    background: #000;
}

#video {
    width: 100%;
    height: auto;
    display: block;
    position: relative;
    z-index: 1;
}

.scanner-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    height: 200px;
    border: 3px solid #0d6efd;
    border-radius: 12px;
    pointer-events: none;
    z-index: 2;
}

.loading-spinner {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Mejoras para móvil */
@media (max-width: 768px) {
    body {
        font-size: 14px;
    }
    
    .container-fluid {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }
    
    .stat-value {
        font-size: 1.5rem;
    }
    
    .stat-card {
        padding: 1rem;
        margin-bottom: 1rem;
    }
    
    .stat-icon {
        width: 40px;
        height: 40px;
        font-size: 1.25rem;
    }
    
    .table-responsive {
        border-radius: 8px;
        font-size: 0.875rem;
    }
    
    .table th,
    .table td {
        padding: 0.5rem;
        white-space: nowrap;
    }
    
    .btn-group-sm .btn {
        padding: 0.25rem 0.5rem;
        font-size: 0.75rem;
    }
    
    .card {
        margin-bottom: 1rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .navbar-brand {
        font-size: 1rem;
    }
    
    .navbar-nav .nav-link {
        padding: 0.5rem 0.75rem;
        font-size: 0.9rem;
    }
    
    .form-control,
    .form-select {
        font-size: 16px; /* Evita zoom en iOS */
    }
    
    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    h3 {
        font-size: 1.25rem;
    }
    
    /* Mejorar espaciado en móvil */
    .row.g-4 {
        --bs-gutter-y: 1rem;
        --bs-gutter-x: 0.75rem;
    }
    
    /* Tablas más compactas en móvil */
    .table thead {
        display: none;
    }
    
    .table tbody tr {
        display: block;
        margin-bottom: 1rem;
        border: 1px solid #dee2e6;
        border-radius: 8px;
        padding: 0.75rem;
        background: white;
    }
    
    .table tbody td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0.5rem 0;
        border: none;
        border-bottom: 1px solid #f0f0f0;
    }
    
    .table tbody td:last-child {
        border-bottom: none;
    }
    
    .table tbody td::before {
        content: attr(data-label);
        font-weight: 600;
        color: #6c757d;
        margin-right: 1rem;
    }
    
    /* Mejorar formularios en móvil */
    .form-label {
        font-weight: 500;
        margin-bottom: 0.5rem;
    }
    
    .input-group-text {
        padding: 0.5rem 0.75rem;
    }
    
    /* Scanner más pequeño en móvil */
    .scanner-container {
        max-width: 100%;
    }
    
    .scanner-overlay {
        width: 150px;
        height: 150px;
    }
}

/* Mejoras para tablets */
@media (min-width: 769px) and (max-width: 1024px) {
    .stat-value {
        font-size: 1.75rem;
    }
    
    .container-fluid {
        max-width: 95%;
    }
}

/* Mejoras para desktop */
@media (min-width: 1025px) {
    .container-fluid {
        max-width: 1400px;
    }
    
    .stat-card {
        padding: 2rem;
    }
    
    .card-body {
        padding: 1.5rem;
    }
}

/* Mejoras generales de UX */
.btn:active {
    transform: translateY(0);
}

.form-control:invalid,
.form-select:invalid {
    border-color: #dc3545;
}

.form-control:valid,
.form-select:valid {
    border-color: #198754;
}

/* Mejorar accesibilidad táctil */
@media (hover: none) and (pointer: coarse) {
    .btn,
    .nav-link,
    .dropdown-item {
        min-height: 44px;
        display: flex;
        align-items: center;
    }
    
    .btn-group-sm .btn {
        min-height: 36px;
    }
}

/* Animaciones suaves */
* {
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

/* Mejorar legibilidad */
p, li, td {
    line-height: 1.6;
}

/* Mejorar contraste en badges */
.badge {
    font-weight: 600;
    letter-spacing: 0.3px;
}

/* Mejorar cards en móvil */
@media (max-width: 768px) {
    .card-header {
        padding: 0.75rem 1rem;
        font-size: 0.95rem;
    }
    
    .alert {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
    }
}