/* ==========================================================================
   Archivo: public/css/tienda.css
   Descripción: Estilos rediseñados para un Mercado Central moderno y profesional.
   ========================================================================== */

/* --- 0. Variables y Estilos Base --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700;800&display=swap');

:root {
    --bg-dark: #111827;          /* Fondo principal (casi negro) */
    --surface-dark: #1F2937;      /* Color para tarjetas y elementos (gris oscuro azulado) */
    --border-color: #374151;      /* Color de bordes sutil */
    --text-primary: #F9FAFB;      /* Blanco para títulos */
    --text-secondary: #9CA3AF;    /* Gris claro para descripciones */
    --accent-primary: #4F46E5;    /* Acento principal (índigo) */
    --accent-hover: #6366F1;      /* Acento al pasar el mouse */
    --accent-green: #10B981;      /* Verde para el saldo */
    --font-sans: 'Inter', sans-serif;
}

body.dark-theme {
    background-color: var(--bg-dark);
    color: var(--text-secondary);
    font-family: var(--font-sans);
    margin: 0;
    padding-top: 70px; /* Espacio para el header fijo */
}

/* --- 1. Header Principal y Saldo --- */
.tienda-header-main {
    background-color: var(--surface-dark);
    border-bottom: 1px solid var(--border-color);
    padding: 0 2rem;
    position: fixed; /* Header fijo en la parte superior */
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background-color: rgba(31, 41, 55, 0.8);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.header-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.25rem;
}

.header-brand img {
    height: 40px;
}

.user-balance-capsule {
    background-color: var(--bg-dark);
    color: var(--text-secondary);
    padding: 8px 20px;
    border-radius: 9999px;
    border: 1px solid var(--border-color);
    font-size: 1rem;
    font-weight: 600;
    white-space: nowrap;
}

.user-balance-capsule strong {
    color: var(--accent-green);
    font-weight: 700;
}

.header-nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
    margin-left: 1.5rem;
    transition: color 0.2s ease;
}

.header-nav a:hover {
    color: var(--text-primary);
}

.header-nav .btn-logout {
    background-color: var(--accent-primary);
    color: white;
    padding: 8px 16px;
    border-radius: 8px;
}
.header-nav .btn-logout:hover {
    background-color: var(--accent-hover);
}

/* --- 2. Contenedor y Título de la Página --- */
.tienda-container {
    max-width: 1400px;
    margin: 3rem auto;
    padding: 0 2rem;
}

.tienda-header {
    text-align: center;
    margin-bottom: 3rem;
}

.page-title {
    font-size: 2.75rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.page-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* --- 3. Filtros de Categoría --- */
.category-filters {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    background-color: var(--surface-dark);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.filter-btn:hover {
    border-color: var(--accent-hover);
    color: var(--text-primary);
}

.filter-btn.active {
    background-color: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
}

/* --- 4. Cuadrícula y Tarjetas de Artículo --- */
.tienda-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

.item-card {
    background-color: var(--surface-dark);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.item-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 25px -5px rgba(0,0,0,0.3), 0 10px 10px -5px rgba(0,0,0,0.2);
}

.item-image-container {
    width: 100%;
    height: 200px;
    background: linear-gradient(to top, var(--bg-dark), #2a3547);
    overflow: hidden;
}

.item-image {
    width: 100%;
    height: 100%;
    object-fit: contain; /* 'contain' para ver el objeto completo */
    padding: 1rem;
    transition: transform 0.3s ease;
}

.item-card:hover .item-image {
    transform: scale(1.05);
}

.item-details {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.item-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.item-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    flex-grow: 1;
    line-height: 1.6;
}

.item-info {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 1.5rem;
}

.item-price {
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent-primary);
}

.item-stock {
    font-size: 0.875rem;
    background-color: var(--bg-dark);
    padding: 0.25rem 0.75rem;
    border-radius: 6px;
    font-weight: 500;
}

.btn-comprar {
    width: 100%;
    padding: 1rem;
    font-size: 1rem;
    font-weight: 700;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-hover));
    color: white;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-transform: uppercase;
}

.btn-comprar:hover:not(:disabled) {
    transform: scale(1.02);
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.4);
}

.btn-comprar:disabled {
    background: var(--border-color);
    color: #6B7280;
    cursor: not-allowed;
}

/* --- 5. Modales (Completamente Rediseñados) --- */
.hidden { display: none; }

.modal-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-color: rgba(17, 24, 39, 0.85);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1rem;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none; /* <--- AÑADE ESTA LÍNEA (ignora clics cuando es invisible) */
}

.modal-overlay:not(.hidden) {
    opacity: 1;
    pointer-events: auto; /* <--- AÑADE ESTA LÍNEA (permite clics solo cuando es visible) */
}

.modal-content {
    background-color: var(--surface-dark);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    width: 100%;
    max-width: 550px;
    text-align: center;
    transform: scale(0.95);
    transition: transform 0.3s ease;
}

.modal-overlay:not(.hidden) .modal-content {
    transform: scale(1);
}

.modal-actions {
    margin-top: 1.5rem;
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

.modal-actions button {
    padding: 0.7rem 1.5rem;
    border-radius: 8px;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary { background-color: var(--accent-primary); color: white; }
.btn-primary:hover { background-color: var(--accent-hover); }
.btn-secondary { background-color: var(--border-color); color: var(--text-primary); }
.btn-secondary:hover { background-color: #4B5563; }

/* --- 6. Formularios dentro de Modales --- */
.form-group-display {
    background-color: var(--bg-dark);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    border: 1px solid var(--border-color);
    text-align: left;
}
.form-group-display p { margin: 0.5rem 0; }
.form-group-display strong { color: var(--text-primary); }

.form-group {
    margin-bottom: 1rem;
    text-align: left;
}
.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
}
.form-group input[type="text"],
.form-group input[type="color"] {
    width: 100%;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.75rem;
    color: var(--text-primary);
    transition: border-color 0.2s, box-shadow 0.2s;
}
.form-group input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.3);
}
.form-note {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.payment-section {
    text-align: center;
    margin: 1.5rem 0;
    font-size: 1.1rem;
}
.payment-section strong {
    color: var(--accent-primary);
    font-weight: 700;
    font-size: 1.25rem;
}

/* --- 7. Sistema de Notificaciones Emergentes --- */

#notification-container {
    position: fixed;
    top: 90px; /* Debajo del header */
    right: 2rem;
    z-index: 2000; /* Por encima de todo */
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: flex-end;
}

.notification {
    background-color: var(--surface-dark);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-left-width: 5px; /* Borde de color distintivo */
    border-radius: 8px;
    padding: 1rem 1.5rem;
    min-width: 300px;
    max-width: 400px;
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.2), 0 4px 6px -2px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    gap: 1rem;
    opacity: 0;
    transform: translateX(100%);
    transition: all 0.5s cubic-bezier(0.68, -0.55, 0.27, 1.55);
}

.notification.show {
    opacity: 1;
    transform: translateX(0);
}

.notification i {
    font-size: 1.5rem;
}

.notification p {
    margin: 0;
    font-weight: 600;
    line-height: 1.5;
}

/* Colores según el tipo de notificación */
.notification.success {
    border-left-color: var(--accent-green);
}
.notification.success i {
    color: var(--accent-green);
}

.notification.error {
    border-left-color: #EF4444; /* Rojo para errores */
}
.notification.error i {
    color: #EF4444;
}

hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 1.5rem 0;
}