/* ==============================================================================
   Proyecto: Ap-titud
   Archivo: assets/css/style.css
   Descripción: Hoja de estilos global, variables, layout base, header y footer.
   ============================================================================== */

/* ------------------------------------------------------------------------------
   1. VARIABLES GLOBALES (Design System)
   ------------------------------------------------------------------------------ */
:root {
    /* Colores Principales (Fieles al Layout) */
    --color-primary-blue: #4A90E2;
    --color-primary-purple: #8E44AD;
    --color-purple-hover: #732d91;
    --color-blue-hover: #357abd;
    
    /* Colores de Fondo y Texto */
    --color-bg-light: #f8f9fa;
    --color-bg-white: #ffffff;
    --color-text-dark: #2d3436;
    --color-text-gray: #636e72;
    --color-border: #dfe6e9;
    
    /* Colores de Alertas y Estados */
    --color-success: #00b894;
    --color-error: #d63031;
    --color-warning: #fdcb6e;
    --color-info: #0984e3;

    /* Tipografía y Espaciados */
    --font-main: 'Poppins', sans-serif;
    --transition-speed: 0.3s;
    --border-radius-pill: 50px;
    --border-radius-card: 12px;
    --shadow-soft: 0 4px 15px rgba(0, 0, 0, 0.05);
}

/* ------------------------------------------------------------------------------
   2. RESET Y ESTILOS BASE
   ------------------------------------------------------------------------------ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-main);
    background-color: var(--color-bg-light);
    color: var(--color-text-dark);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    display: flex;
    flex-direction: column;
    min-height: 100vh; /* Permite que el footer se quede abajo si hay poco contenido */
}

a {
    text-decoration: none;
    color: var(--color-primary-blue);
    transition: color var(--transition-speed) ease;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* La etiqueta main toma el espacio sobrante para empujar el footer hacia abajo */
.main-content {
    flex: 1;
}

/* ------------------------------------------------------------------------------
   3. BOTONES Y COMPONENTES UI
   ------------------------------------------------------------------------------ */
.btn {
    display: inline-block;
    padding: 10px 24px;
    border-radius: var(--border-radius-pill);
    font-size: 0.95rem;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    border: 2px solid transparent;
}

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

.btn-solid-purple:hover {
    background-color: var(--color-purple-hover);
    color: var(--color-bg-white);
    box-shadow: 0 4px 10px rgba(142, 68, 173, 0.3);
}

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

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

/* ------------------------------------------------------------------------------
   4. NAVEGACIÓN PRINCIPAL (HEADER)
   ------------------------------------------------------------------------------ */
.navbar-principal {
    background-color: var(--color-bg-white);
    box-shadow: var(--shadow-soft);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.container-nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-img {
    height: 40px; /* Ajustar según tu logo real */
}

.navbar-menu ul {
    display: flex;
    gap: 30px;
}

.navbar-menu a {
    color: var(--color-text-dark);
    font-weight: 500;
    font-size: 1rem;
}

.navbar-menu a:hover {
    color: var(--color-primary-purple);
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

/* Icono del Carrito Flotante */
.cart-icon {
    position: relative;
    font-size: 1.2rem;
    color: var(--color-text-dark);
    margin-left: 10px;
}

.cart-icon:hover {
    color: var(--color-primary-blue);
}

.cart-counter {
    position: absolute;
    top: -8px;
    right: -10px;
    background-color: var(--color-primary-purple);
    color: white;
    font-size: 0.7rem;
    font-weight: bold;
    padding: 2px 6px;
    border-radius: 50%;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-text-dark);
    cursor: pointer;
}

/* ------------------------------------------------------------------------------
   5. SISTEMA DE ALERTAS (Mensajes Flash PHP)
   ------------------------------------------------------------------------------ */
.container-mensajes-flash {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    padding: 10px 20px;
}

.alerta {
    padding: 15px 20px;
    margin-bottom: 15px;
    border-radius: 8px;
    font-weight: 500;
    text-align: center;
    animation: fadeInDown 0.5s ease-out;
}

.mensaje-success { background-color: #e8f8f5; color: var(--color-success); border: 1px solid var(--color-success); }
.mensaje-error { background-color: #fdfefe; color: var(--color-error); border: 1px solid var(--color-error); }
.mensaje-warning { background-color: #fff9e6; color: var(--color-warning); border: 1px solid var(--color-warning); }
.mensaje-info { background-color: #eaf2f8; color: var(--color-info); border: 1px solid var(--color-info); }

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ------------------------------------------------------------------------------
   6. FOOTER (PIE DE PÁGINA)
   ------------------------------------------------------------------------------ */
.footer-principal {
    background-color: var(--color-bg-white);
    border-top: 1px solid var(--color-border);
    padding: 60px 0 20px;
    margin-top: 40px;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.brand-col .footer-logo {
    height: 40px;
    margin-bottom: 15px;
}

.brand-col .footer-desc {
    color: var(--color-text-gray);
    font-size: 0.9rem;
}

.links-col h4 {
    color: var(--color-text-dark);
    font-size: 1.1rem;
    margin-bottom: 20px;
    font-weight: 600;
}

.links-col ul li {
    margin-bottom: 12px;
}

.links-col ul a {
    color: var(--color-text-gray);
    font-size: 0.95rem;
}

.links-col ul a:hover {
    color: var(--color-primary-purple);
    padding-left: 5px; /* Efecto sutil de movimiento */
}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--color-text-gray);
    font-size: 0.9rem;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    color: var(--color-text-gray);
    font-size: 1.2rem;
    transition: color var(--transition-speed) ease;
}

.social-links a:hover {
    color: var(--color-primary-blue);
    transform: translateY(-2px);
}

/* ------------------------------------------------------------------------------
   7. RESPONSIVE DESIGN (Media Queries)
   ------------------------------------------------------------------------------ */
@media (max-width: 992px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    /* Navbar Móvil */
    .menu-toggle {
        display: block;
    }
    
    .navbar-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--color-bg-white);
        box-shadow: 0 4px 10px rgba(0,0,0,0.1);
        padding: 20px;
        flex-direction: column;
        align-items: center;
    }
    
    .navbar-menu.active {
        display: flex;
    }

    .navbar-menu ul {
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }

    .navbar-actions .btn {
        display: none; /* Ocultamos botones de auth en móvil para limpiar el nav, o los podemos pasar al menú desplegable luego */
    }

    /* Footer Móvil */
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .links-col ul a:hover {
        padding-left: 0; /* Evitar saltos extraños en móvil */
    }

    .footer-bottom {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
}