/* RESET y base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

body {
    background: #faf7f2;
    color: #2d2a24;
    padding: 0 0 20px 0;
    min-height: 100vh;
}

/* HEADER */
header {
    background: #2d2a24;
    color: #f5ede4;
    padding: 20px 16px 14px;
    text-align: center;
    border-bottom: 4px solid #c9a87c;
    position: sticky;
    top: 0;
    z-index: 10;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 1.7rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.logo i {
    color: #e6c28c;
    font-size: 2rem;
}

.tagline {
    font-size: 0.9rem;
    opacity: 0.85;
    margin-top: 4px;
    font-style: italic;
}

/* CATÁLOGO */
.catalogo {
    padding: 16px 12px 30px;
    max-width: 500px;
    margin: 0 auto;
}

.catalogo h2 {
    font-size: 1.6rem;
    margin-bottom: 2px;
    color: #2d2a24;
    letter-spacing: -0.5px;
}

.subtitulo {
    color: #6b6258;
    font-size: 0.95rem;
    margin-bottom: 20px;
    border-left: 4px solid #c9a87c;
    padding-left: 12px;
}

/* GRID - UNA COLUMNA EN MÓVIL */
.grid-lamparas {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* TARJETA DE CADA LÁMPARA */
.tarjeta {
    background: #ffffff;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0,0,0,0.06);
    transition: transform 0.15s ease, box-shadow 0.2s;
    border: 1px solid #efe8df;
}

.tarjeta:active {
    transform: scale(0.98);
}

.tarjeta img {
    width: 100%;
    height: auto;
    aspect-ratio: 1 / 1.1;
    object-fit: cover;
    display: block;
    background: #e8ddd0;
}

.info {
    padding: 16px 16px 18px;
}

.info h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: #1f1b16;
}

.descripcion {
    font-size: 0.9rem;
    color: #5a5147;
    margin-bottom: 10px;
    line-height: 1.4;
}

.precio {
    font-size: 1.3rem;
    font-weight: 700;
    color: #2d2a24;
    margin-bottom: 14px;
}

.precio span {
    font-size: 0.9rem;
    font-weight: 400;
    color: #7a6e60;
    margin-left: 6px;
}

/* BOTÓN WHATSAPP */
.btn-whatsapp {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: #25D366;
    color: #fff;
    font-weight: 600;
    font-size: 1rem;
    padding: 14px 20px;
    border-radius: 60px;
    border: none;
    width: 100%;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    text-decoration: none;
    box-shadow: 0 4px 10px rgba(37, 211, 102, 0.25);
    letter-spacing: 0.3px;
}

.btn-whatsapp i {
    font-size: 1.3rem;
}

.btn-whatsapp:active {
    background: #1da851;
    transform: scale(0.96);
}

/* FOOTER */
footer {
    text-align: center;
    padding: 30px 16px 10px;
    color: #5a5147;
    font-size: 0.85rem;
    border-top: 1px solid #e3d9ce;
    margin-top: 10px;
}

.whatsapp-footer {
    margin-top: 6px;
    color: #25D366;
    font-weight: 500;
}

/* Ajustes para pantallas más grandes (opcional) */
@media (min-width: 600px) {
    .grid-lamparas {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }
    .catalogo {
        max-width: 700px;
    }
}

@media (min-width: 900px) {
    .grid-lamparas {
        grid-template-columns: 1fr 1fr 1fr;
    }
    .catalogo {
        max-width: 1000px;
    }
}