/* Estilos personalizados para el Sistema de Evaluación en Línea
 * UI/UX: Cargar themes.css para aplicar tema (azul/verde/rojo/naranja).
 * Textos: usar variables --theme-text-on-primary y --theme-text-on-light para contraste.
 * Iconos: flat monocolor (reglas en themes.css); no gradientes ni multicolor en iconos.
 */

:root {
    --primary-color: #0066cc;        /* Por defecto azul; themes.css lo sobrescribe según tema */
    --secondary-color: #333333;      /* Negro/gris oscuro */
    --success-color: #28a745;       /* Verde */
    --warning-color: #ff8c00;       /* Naranja */
    --info-color: #17a2b8;          /* Azul claro */
    --light-color: #ffffff;         /* Blanco */
    --dark-color: #000000;          /* Negro */
    --gradient-primary: linear-gradient(135deg, #0066cc 0%, #004499 100%);
    --gradient-secondary: linear-gradient(135deg, #ff8c00 0%, #ff6600 100%);
    --gradient-success: linear-gradient(135deg, #28a745 0%, #1e7e34 100%);
    --gradient-warning: linear-gradient(135deg, #ff8c00 0%, #e67e00 100%);
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    --border-radius: 0.5rem;
    --border-radius-lg: 1rem;
    --transition: all 0.3s ease;
}

/* Estilos generales - Textos siempre visibles (contraste) */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--theme-text-on-light, var(--dark-color));
    background-color: #f8f9fa;
}
body .card-body,
body .form-label,
body .table,
body .list-group-item {
    color: var(--theme-text-on-light, #1a1a1a);
}
/* Zonas con fondo del tema: texto claro obligatorio */
.hero-section,
.hero-section *,
.login-body .card-body h1,
.login-body .card-body .fs-5,
.bg-gradient-primary,
.bg-gradient-primary * {
    color: var(--theme-text-on-primary, #fff) !important;
}
.hero-section .text-muted { color: rgba(255,255,255,0.9) !important; }

/* Hero Section */
.hero-section {
    background: var(--gradient-primary);
    min-height: 100vh;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><polygon fill="rgba(255,255,255,0.1)" points="0,1000 1000,0 1000,1000"/></svg>');
    background-size: cover;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-features .feature-item {
    display: flex;
    align-items: center;
    margin-bottom: 0.5rem;
}

.hero-image {
    position: relative;
    z-index: 2;
}

/* Login Page */
.login-body {
    background: var(--gradient-primary);
    min-height: 100vh;
}

.login-body .card {
    border-radius: var(--border-radius-lg);
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
    min-width: 400px;
    max-width: 500px;
    margin: 0 auto;
}

.login-body .card-body {
    padding: 3rem 2.5rem;
}

.login-body .form-control {
    padding: 1rem 1.25rem;
    font-size: 1.1rem;
    border-radius: var(--border-radius);
    border: 2px solid #e9ecef;
    transition: all 0.3s ease;
}

.login-body .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(var(--theme-focus-rgba, 0, 102, 204), 0.25);
    transform: translateY(-2px);
}

.login-body .btn {
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
}

.login-body .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.login-body .input-group-text {
    padding: 1rem 1.25rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border: 2px solid #e9ecef;
    border-right: none;
    border-radius: var(--border-radius) 0 0 var(--border-radius);
}

.login-body .input-group .form-control {
    border-left: none;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

.login-body .input-group:focus-within .input-group-text {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
}

/* Responsive adjustments for login */
@media (max-width: 768px) {
    .login-body .card {
        min-width: 90%;
        max-width: 95%;
        margin: 1rem;
    }
    
    .login-body .card-body {
        padding: 2rem 1.5rem;
    }
    
    .login-body .form-control {
        padding: 0.875rem 1rem;
        font-size: 1rem;
    }
    
    .login-body .btn {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
}

@media (max-width: 576px) {
    .login-body .card {
        min-width: 95%;
        margin: 0.5rem;
    }
    
    .login-body .card-body {
        padding: 1.5rem 1rem;
    }
    
    .login-body h1 {
        font-size: 1.75rem;
    }
    
    .login-body .fs-5 {
        font-size: 1rem !important;
    }
}

/* Animaciones adicionales */
.login-body .card {
    animation: slideInUp 0.6s ease-out;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-body .input-group.focused {
    transform: scale(1.02);
    transition: transform 0.2s ease;
}

.login-body .form-control:focus {
    box-shadow: 0 0 0 0.2rem rgba(var(--theme-focus-rgba, 0, 102, 204), 0.25), 0 0.5rem 1rem rgba(0, 0, 0, 0.1);
}

/* Cards */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.card-header {
    background: var(--theme-gradient, var(--gradient-primary));
    color: var(--theme-text-on-primary, #fff) !important;
    border-bottom: none;
    border-radius: var(--border-radius) var(--border-radius) 0 0 !important;
}
.card-header * {
    color: var(--theme-text-on-primary, #fff) !important;
}

/* Card-header con clases bg-* usan colores del tema */
.card-header.bg-primary {
    background: var(--theme-gradient, var(--gradient-primary)) !important;
    color: var(--theme-text-on-primary, #fff) !important;
    border-color: transparent;
}
.card-header.bg-primary * { color: var(--theme-text-on-primary, #fff) !important; }
.card-header.bg-secondary {
    background: var(--theme-primary-darker, var(--theme-primary-dark, #004499)) !important;
    color: var(--theme-text-on-primary, #fff) !important;
    border-color: transparent;
}
.card-header.bg-secondary * { color: var(--theme-text-on-primary, #fff) !important; }
.card-header.bg-info {
    background: var(--theme-primary, var(--primary-color)) !important;
    color: var(--theme-text-on-primary, #fff) !important;
    border-color: transparent;
}
.card-header.bg-info * { color: var(--theme-text-on-primary, #fff) !important; }
.card-header.bg-success,
.card-header.bg-warning,
.card-header.bg-danger {
    /* Mantienen semántica; opcional: mapear a variantes del tema si se definen */
    border-color: transparent;
}

/* Buttons */
.btn {
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: var(--transition);
    border: none;
    padding: 0.75rem 1.5rem;
}

.btn-primary {
    background: var(--theme-gradient, var(--gradient-primary));
    color: var(--theme-text-on-primary, #fff) !important;
    box-shadow: var(--shadow-sm);
    border: none;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow);
    background: var(--theme-gradient-hover, linear-gradient(135deg, #0052a3 0%, #003366 100%));
    color: var(--theme-text-on-primary, #fff) !important;
}
.btn-primary i, .btn-primary .fa, .btn-primary .bi { color: var(--theme-icon-on-primary, #fff) !important; }

.btn-success {
    background: linear-gradient(135deg, #28a745 0%, #1e7e34 100%);
    color: #fff !important;
    border: none;
}

.btn-success:hover {
    background: linear-gradient(135deg, #218838 0%, #155724 100%);
    color: #fff !important;
}

.btn-warning {
    background: linear-gradient(135deg, #ff8c00 0%, #e67e00 100%);
    color: #fff !important;
    border: none;
}

.btn-warning:hover {
    background: linear-gradient(135deg, #e67e00 0%, #cc6600 100%);
}

.btn-info {
    background: linear-gradient(135deg, #17a2b8 0%, #138496 100%);
    border: none;
}

.btn-info:hover {
    background: linear-gradient(135deg, #138496 0%, #0c5460 100%);
}

.btn-outline-primary {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    background: transparent;
}

.btn-outline-primary:hover {
    background: var(--primary-color);
    transform: translateY(-1px);
}

/* Forms */
.form-control, .form-select {
    border-radius: var(--border-radius);
    border: 2px solid #e9ecef;
    transition: var(--transition);
    padding: 0.75rem 1rem;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(var(--theme-focus-rgba, 13, 110, 253), 0.25);
}

.input-group-text {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border: 2px solid #e9ecef;
    border-right: none;
}

.input-group .form-control {
    border-left: none;
}

/* Alerts */
.alert {
    border: none;
    border-radius: var(--border-radius);
    border-left: 4px solid;
}

.alert-success {
    background: linear-gradient(135deg, rgba(40, 167, 69, 0.1) 0%, rgba(30, 126, 52, 0.1) 100%);
    border-left-color: #28a745;
    color: #28a745;
}

.alert-warning {
    background: linear-gradient(135deg, rgba(255, 140, 0, 0.1) 0%, rgba(230, 126, 0, 0.1) 100%);
    border-left-color: #ff8c00;
    color: #ff8c00;
}

.alert-info {
    background: linear-gradient(135deg, rgba(23, 162, 184, 0.1) 0%, rgba(19, 132, 150, 0.1) 100%);
    border-left-color: #17a2b8;
    color: #17a2b8;
}

.alert-danger {
    background: linear-gradient(135deg, rgba(255, 140, 0, 0.1) 0%, rgba(230, 126, 0, 0.1) 100%);
    border-left-color: #ff8c00;
    color: #ff8c00;
}

/* Navigation */
.navbar {
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(10px);
}

.navbar-brand {
    font-weight: 300;
    font-size: 1rem;
}

.nav-link {
    font-weight: 500;
    transition: var(--transition);
    border-radius: var(--border-radius);
    margin: 0 0.25rem;
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Main Content con margen para sidebar */
.main-content {
    transition: margin-left 0.3s ease;
}

/* Badges */
.badge {
    border-radius: var(--border-radius);
    font-weight: 500;
    padding: 0.5rem 0.75rem;
}

/* Tables */
.table {
    border-radius: var(--border-radius);
    overflow: hidden;
}

.table thead th {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border: none;
    font-weight: 600;
    color: var(--theme-text-on-light, var(--dark-color));
}
.badge.bg-primary,
.badge.bg-secondary,
.btn-info {
    color: var(--theme-text-on-primary, #fff) !important;
}
.badge.bg-primary i,
.badge.bg-secondary i,
.btn-info i { color: var(--theme-icon-on-primary, #fff) !important; }

.table tbody tr {
    transition: var(--transition);
}

.table tbody tr:hover {
    background: rgba(var(--theme-focus-rgba, 13, 110, 253), 0.05);
}

/* Feature Icons - flat monocolor (color del tema) */
.feature-icon {
    display: inline-block;
    padding: 1rem;
    border-radius: 50%;
    background: rgba(var(--theme-focus-rgba, 0, 102, 204), 0.1);
    color: var(--primary-color);
    transition: var(--transition);
}
.feature-icon i, .feature-icon svg { color: inherit !important; fill: currentColor; }

.feature-icon:hover {
    transform: scale(1.1);
    background: rgba(var(--theme-focus-rgba, 0, 102, 204), 0.2);
}

.evaluation-type-icon {
    display: inline-block;
    padding: 1.5rem;
    border-radius: 50%;
    background: rgba(var(--theme-focus-rgba, 0, 102, 204), 0.1);
    color: var(--primary-color);
    transition: var(--transition);
}
.evaluation-type-icon i, .evaluation-type-icon svg { color: inherit !important; fill: currentColor; }

.evaluation-type-icon:hover {
    transform: scale(1.1);
    background: rgba(var(--theme-focus-rgba, 0, 102, 204), 0.2);
}

/* Test Page Specific */
.pregunta-card {
    transition: var(--transition);
}

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

.opciones-respuesta .form-check {
    padding: 0.75rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.opciones-respuesta .form-check:hover {
    background: rgba(var(--theme-focus-rgba, 0, 102, 204), 0.05);
}

/* Dashboard Cards */
.dashboard-card {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border-radius: var(--border-radius-lg);
    transition: var(--transition);
}

.dashboard-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* Progress Bars */
.progress {
    height: 0.75rem;
    border-radius: var(--border-radius);
    background: rgba(0, 0, 0, 0.1);
}

.progress-bar {
    border-radius: var(--border-radius);
    background: var(--theme-gradient, var(--gradient-primary));
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section {
        text-align: center;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
}

@media (max-width: 576px) {
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .display-4 {
        font-size: 2.5rem;
    }
    
    .display-5 {
        font-size: 2rem;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: var(--border-radius);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: var(--border-radius);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* Loading States */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}

/* Utility Classes */
.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.bg-gradient-primary {
    background: var(--gradient-primary);
}

.bg-gradient-secondary {
    background: linear-gradient(135deg, #ff8c00 0%, #ff6600 100%);
}

.bg-gradient-success {
    background: linear-gradient(135deg, #28a745 0%, #1e7e34 100%);
}

.bg-gradient-warning {
    background: linear-gradient(135deg, #ff8c00 0%, #e67e00 100%);
}

.shadow-custom {
    box-shadow: var(--shadow);
}

.shadow-custom-lg {
    box-shadow: var(--shadow-lg);
}

.border-radius-custom {
    border-radius: var(--border-radius);
}

.border-radius-custom-lg {
    border-radius: var(--border-radius-lg);
}