/**
 * CAPA Encuestas v2.0 - Estilos Principales
 * Paleta de colores oficial CAPA
 */

/* =====================================
   VARIABLES CSS
   ===================================== */
:root {
    /* Colores CAPA */
    --capa-azul-oscuro: #001A4D;
    --capa-purpura: #9D4EDD;
    --capa-purpura-claro: #C084FC;
    --capa-purpura-oscuro: #6B21A8;
    
    /* Grises */
    --gris-muy-claro: #F8F9FA;
    --gris-claro: #E9ECEF;
    --gris-medio: #6C757D;
    --gris-oscuro: #343A40;
    
    /* Semánticos */
    --color-primario: var(--capa-azul-oscuro);
    --color-secundario: var(--capa-purpura);
    --color-acento: var(--capa-purpura-claro);
    --color-hover: var(--capa-purpura-oscuro);
    
    /* Tipografía */
    --font-principal: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-size-base: 1rem;
    --line-height-base: 1.5;
    
    /* Espaciado */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* Bordes */
    --border-radius: 0.375rem;
    --border-color: var(--gris-claro);
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

/* =====================================
   BASE
   ===================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    font-family: var(--font-principal);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--gris-oscuro);
    background-color: var(--gris-muy-claro);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

/* =====================================
   HEADER Y NAVEGACIÓN
   ===================================== */
.navbar-capa {
    background-color: var(--capa-azul-oscuro) !important;
    box-shadow: var(--shadow-md);
}

.navbar-capa .navbar-brand {
    color: #fff !important;
    font-weight: 600;
    font-size: 1.25rem;
}

.navbar-capa .navbar-brand:hover {
    color: var(--capa-purpura-claro) !important;
}

.navbar-capa .nav-link {
    color: rgba(255, 255, 255, 0.85) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    transition: all 0.3s ease;
}

.navbar-capa .nav-link:hover {
    color: var(--capa-purpura-claro) !important;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
}

.navbar-capa .nav-link.active {
    color: var(--capa-purpura-claro) !important;
    background-color: rgba(255, 255, 255, 0.15);
    border-radius: var(--border-radius);
}

.navbar-toggler {
    border-color: rgba(255, 255, 255, 0.3) !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(255, 255, 255, 0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
}

/* =====================================
   BOTONES
   ===================================== */
.btn {
    border-radius: var(--border-radius);
    font-weight: 500;
    padding: 0.5rem 1.25rem;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--capa-azul-oscuro);
    border-color: var(--capa-azul-oscuro);
}

.btn-primary:hover {
    background-color: #00122e;
    border-color: #00122e;
}

.btn-secondary {
    background-color: var(--capa-purpura);
    border-color: var(--capa-purpura);
}

.btn-secondary:hover {
    background-color: var(--capa-purpura-oscuro);
    border-color: var(--capa-purpura-oscuro);
}

.btn-outline-primary {
    color: var(--capa-azul-oscuro);
    border-color: var(--capa-azul-oscuro);
}

.btn-outline-primary:hover {
    background-color: var(--capa-azul-oscuro);
    border-color: var(--capa-azul-oscuro);
    color: #fff;
}

.btn-outline-secondary {
    color: var(--capa-purpura);
    border-color: var(--capa-purpura);
}

.btn-outline-secondary:hover {
    background-color: var(--capa-purpura);
    border-color: var(--capa-purpura);
    color: #fff;
}

/* =====================================
   CARDS
   ===================================== */
.card {
    border: none;
    box-shadow: var(--shadow-sm);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
}

.card-header {
    background-color: var(--capa-azul-oscuro);
    color: #fff;
    font-weight: 600;
    border-radius: var(--border-radius) var(--border-radius) 0 0 !important;
    padding: 1rem 1.25rem;
}

.card-body {
    padding: 1.5rem;
}

/* =====================================
   TABLAS
   ===================================== */
.table {
    background-color: #fff;
}

.table thead th {
    background-color: var(--capa-azul-oscuro);
    color: #fff;
    font-weight: 600;
    border: none;
    padding: 0.875rem;
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.5px;
}

.table tbody tr:hover {
    background-color: rgba(157, 78, 221, 0.05);
    cursor: pointer;
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: rgba(0, 26, 77, 0.02);
}

/* =====================================
   FORMULARIOS
   ===================================== */
.form-label {
    font-weight: 500;
    color: var(--gris-oscuro);
    margin-bottom: 0.5rem;
}

.form-control,
.form-select {
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    padding: 0.625rem 0.875rem;
    transition: all 0.3s ease;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--capa-purpura);
    box-shadow: 0 0 0 0.2rem rgba(157, 78, 221, 0.25);
}

/* =====================================
   BADGES
   ===================================== */
.badge {
    font-weight: 500;
    padding: 0.35em 0.65em;
}

.badge-primary {
    background-color: var(--capa-azul-oscuro);
}

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

/* =====================================
   ALERTS (Flash Messages)
   ===================================== */
.alert {
    border-radius: var(--border-radius);
    border: none;
    box-shadow: var(--shadow-sm);
}

/* =====================================
   FOOTER
   ===================================== */
.footer-capa {
    background-color: var(--capa-azul-oscuro);
    color: rgba(255, 255, 255, 0.85);
    padding: 1.5rem 0;
    margin-top: auto;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
}

.footer-capa a {
    color: var(--capa-purpura-claro);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-capa a:hover {
    color: #fff;
}

/* =====================================
   UTILIDADES
   ===================================== */
.text-primary-capa {
    color: var(--capa-azul-oscuro) !important;
}

.text-secondary-capa {
    color: var(--capa-purpura) !important;
}

.bg-primary-capa {
    background-color: var(--capa-azul-oscuro) !important;
}

.bg-secondary-capa {
    background-color: var(--capa-purpura) !important;
}

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

.fade-in {
    animation: fadeIn 0.4s ease-in-out;
}

/* =====================================
   LOADING SPINNER
   ===================================== */
.spinner-capa {
    border: 3px solid rgba(157, 78, 221, 0.2);
    border-top-color: var(--capa-purpura);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 0.8s linear infinite;
}

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

/* =====================================
   CONTAINER PERSONALIZADO CON MÁRGENES
   ===================================== */
.container-capa {
    width: 100%;
    padding-right: 20px;
    padding-left: 20px;
    margin-right: auto;
    margin-left: auto;
}

@media (min-width: 576px) {
    .container-capa {
        max-width: 540px;
    }
}

@media (min-width: 768px) {
    .container-capa {
        max-width: 720px;
        padding-right: 30px;
        padding-left: 30px;
    }
}

@media (min-width: 992px) {
    .container-capa {
        max-width: 960px;
    }
}

@media (min-width: 1200px) {
    .container-capa {
        max-width: 1140px;
    }
}

@media (min-width: 1400px) {
    .container-capa {
        max-width: 1320px;
    }
}