/*
 * Kraken Surveys - Estilos Corporativos Modernos
 * Paleta de colores profesional y diseño responsive
 */

:root {
    /* Colores Principales */
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary: #64748b;
    --secondary-dark: #475569;
    --secondary-light: #94a3b8;

    /* Colores de Estado */
    --success: #10b981;
    --success-light: #d1fae5;
    --danger: #ef4444;
    --danger-light: #fee2e2;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --info: #06b6d4;
    --info-light: #cffafe;

    /* Colores Neutros */
    --dark: #1e293b;
    --light: #f8fafc;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

    /* Tipografía */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;

    /* Bordes */
    --radius-sm: 0.25rem;
    --radius: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Transiciones */
    --transition: all 0.2s ease-in-out;
}

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

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.5;
    color: var(--gray-800);
    background-color: var(--gray-50);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Contenedores */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

.container-fluid {
    width: 100%;
    padding: 0 1rem;
}

/* Navegación */
.navbar {
    background-color: white;
    border-bottom: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-nav {
    display: flex;
    list-style: none;
    gap: 0.5rem;
    align-items: center;
}

.nav-link {
    color: var(--gray-700);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    transition: var(--transition);
    font-weight: 500;
}

.nav-link:hover {
    background-color: var(--gray-100);
    color: var(--primary);
}

.nav-link.active {
    background-color: var(--primary);
    color: white;
}

/* Dropdown Menu */
.nav-dropdown {
    position: relative;
}

.nav-dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    cursor: pointer;
}

.nav-dropdown-toggle::after {
    content: '';
    border: solid var(--gray-600);
    border-width: 0 2px 2px 0;
    display: inline-block;
    padding: 3px;
    transform: rotate(45deg);
    margin-left: 0.25rem;
    transition: var(--transition);
}

.nav-dropdown:hover .nav-dropdown-toggle::after {
    transform: rotate(-135deg);
}

.nav-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: white;
    min-width: 180px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    z-index: 1001;
    padding: 0.5rem 0;
    list-style: none;
    border: 1px solid var(--gray-200);
}

.nav-dropdown:hover .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-dropdown-menu li {
    padding: 0;
}

.nav-dropdown-menu .nav-link {
    display: block;
    padding: 0.625rem 1rem;
    border-radius: 0;
    white-space: nowrap;
}

.nav-dropdown-menu .nav-link:hover {
    background-color: var(--gray-100);
}

/* Botones */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1.25rem;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background-color: var(--secondary-dark);
}

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

.btn-success:hover {
    background-color: #059669;
}

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

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

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

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

.btn-outline:hover {
    background-color: var(--primary);
    color: white;
}

.btn-sm {
    padding: 0.375rem 0.875rem;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
}

/* Cards */
.card {
    background-color: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
}

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

.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--gray-200);
    background-color: var(--gray-50);
    font-weight: 600;
    font-size: 1.125rem;
    color: var(--gray-800);
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--gray-200);
    background-color: var(--gray-50);
}

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

.form-label {
    display: block;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.form-label.required::after {
    content: ' *';
    color: var(--danger);
}

.form-control {
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-size: 0.9375rem;
    line-height: 1.5;
    color: var(--gray-800);
    background-color: white;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-control:disabled {
    background-color: var(--gray-100);
    cursor: not-allowed;
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.5rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 2.5rem;
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.form-check-input {
    width: 1.125rem;
    height: 1.125rem;
    cursor: pointer;
}

/* Alertas */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.25rem;
    display: flex;
    align-items: start;
    gap: 0.75rem;
    font-size: 0.9375rem;
}

.alert-success {
    background-color: var(--success-light);
    color: #065f46;
    border-left: 4px solid var(--success);
}

.alert-danger {
    background-color: var(--danger-light);
    color: #991b1b;
    border-left: 4px solid var(--danger);
}

.alert-warning {
    background-color: var(--warning-light);
    color: #92400e;
    border-left: 4px solid var(--warning);
}

.alert-info {
    background-color: var(--info-light);
    color: #155e75;
    border-left: 4px solid var(--info);
}

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

.table {
    width: 100%;
    border-collapse: collapse;
    background-color: white;
}

.table thead {
    background-color: var(--primary);
    color: white;
}

.table thead th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table tbody tr {
    border-bottom: 1px solid var(--gray-200);
    transition: var(--transition);
}

.table tbody tr:hover {
    background-color: var(--gray-50);
}

.table tbody td {
    padding: 1rem;
    font-size: 0.9375rem;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

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

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

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

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

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

/* Paginación */
.pagination {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    margin-top: 2rem;
}

.page-item {
    list-style: none;
}

.page-link {
    padding: 0.5rem 1rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--gray-700);
    transition: var(--transition);
}

.page-link:hover {
    background-color: var(--gray-100);
}

.page-item.active .page-link {
    background-color: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* Estadísticas y Métricas */
.stat-card {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.9;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Gráficas */
.chart-container {
    position: relative;
    height: 400px;
    margin: 2rem 0;
}

/* Utilidades */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }

.d-flex { display: flex; }
.justify-between { justify-content: space-between; }
.align-center { align-items: center; }
.gap-2 { gap: 1rem; }

.w-full { width: 100%; }

/* Responsive */
@media (max-width: 768px) {
    .navbar-nav {
        flex-direction: column;
        width: 100%;
    }

    .table-responsive {
        font-size: 0.875rem;
    }

    .btn {
        width: 100%;
    }

    .stat-value {
        font-size: 2rem;
    }
}

/* Animaciones */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.3s ease-in-out;
}

/* Loading Spinner */
.spinner {
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 0.8s linear infinite;
}

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

/* ============================================
   TEMAS DE COLORES CORPORATIVOS
   ============================================ */

/* Tema Azul (Default) - Profesional y Confiable */
:root, [data-theme="blue"] {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
}

/* Tema Esmeralda - Fresco y Natural */
[data-theme="emerald"] {
    --primary: #059669;
    --primary-dark: #047857;
    --primary-light: #10b981;
}

/* Tema Índigo - Elegante y Sofisticado */
[data-theme="indigo"] {
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --primary-light: #6366f1;
}

/* Tema Slate - Minimalista y Moderno */
[data-theme="slate"] {
    --primary: #475569;
    --primary-dark: #334155;
    --primary-light: #64748b;
}

/* Tema Dark - Modo Oscuro */
[data-theme="dark"] {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #60a5fa;

    --dark: #0f172a;
    --light: #1e293b;
    --gray-50: #1e293b;
    --gray-100: #334155;
    --gray-200: #475569;
    --gray-300: #64748b;
    --gray-400: #94a3b8;
    --gray-500: #cbd5e1;
    --gray-600: #e2e8f0;
    --gray-700: #f1f5f9;
    --gray-800: #f8fafc;
    --gray-900: #ffffff;
}

[data-theme="dark"] body {
    background-color: #0f172a;
    color: #e2e8f0;
}

[data-theme="dark"] .navbar {
    background-color: #1e293b;
    border-bottom-color: #334155;
}

[data-theme="dark"] .card {
    background-color: #1e293b;
    border: 1px solid #334155;
}

[data-theme="dark"] .card-header {
    background-color: #334155;
    border-bottom-color: #475569;
    color: #f1f5f9;
}

[data-theme="dark"] .table {
    background-color: #1e293b;
}

[data-theme="dark"] .table tbody tr {
    border-bottom-color: #334155;
}

[data-theme="dark"] .table tbody tr:hover {
    background-color: #334155;
}

[data-theme="dark"] .form-control {
    background-color: #334155;
    border-color: #475569;
    color: #f1f5f9;
}

[data-theme="dark"] .form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

[data-theme="dark"] .form-select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%2394a3b8' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
}

[data-theme="dark"] .nav-link {
    color: #cbd5e1;
}

[data-theme="dark"] .nav-link:hover {
    background-color: #334155;
    color: var(--primary-light);
}

[data-theme="dark"] .nav-dropdown-menu {
    background-color: #1e293b;
    border-color: #475569;
}

[data-theme="dark"] .nav-dropdown-menu .nav-link:hover {
    background-color: #334155;
}

[data-theme="dark"] .btn-outline {
    border-color: var(--primary-light);
    color: var(--primary-light);
}

[data-theme="dark"] .alert-success {
    background-color: rgba(16, 185, 129, 0.15);
    color: #6ee7b7;
}

[data-theme="dark"] .alert-danger {
    background-color: rgba(239, 68, 68, 0.15);
    color: #fca5a5;
}

[data-theme="dark"] .alert-warning {
    background-color: rgba(245, 158, 11, 0.15);
    color: #fcd34d;
}

[data-theme="dark"] .alert-info {
    background-color: rgba(6, 182, 212, 0.15);
    color: #67e8f9;
}

[data-theme="dark"] .theme-selector {
    background: #334155;
}

[data-theme="dark"] .theme-btn.active {
    border-color: #f1f5f9;
}

/* Selector de tema moderno */
.theme-select-wrapper {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.theme-select {
    appearance: none;
    -webkit-appearance: none;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 100%);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-full);
    padding: 0.375rem 2rem 0.375rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray-700);
    cursor: pointer;
    transition: var(--transition);
    min-width: 110px;
    box-shadow: var(--shadow-sm);
}

.theme-select:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow);
}

.theme-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.theme-select-wrapper::after {
    content: '';
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    border: solid var(--gray-500);
    border-width: 0 2px 2px 0;
    padding: 2.5px;
    transform: translateY(-60%) rotate(45deg);
}

.theme-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 0.5rem;
    flex-shrink: 0;
}

[data-theme="dark"] .theme-select {
    background: linear-gradient(135deg, #334155 0%, #1e293b 100%);
    border-color: #475569;
    color: #e2e8f0;
}

[data-theme="dark"] .theme-select-wrapper::after {
    border-color: #94a3b8;
}