/* ============================================================
   Base — mobile-first [RF-10, RNF-D01]
   ============================================================ */
:root {
    --color-primario: #163a5c;        /* azul marino, igual al fondo del logo */
    --color-primario-claro: #2a5580;
    --color-acento: #b5482e;          /* óxido/rojo, igual a la franja "GASFITER" */
    --color-acento-claro: #d0603f;
    --color-agua: #2f8fd1;            /* celeste, igual a las gotas de agua del logo */
    --color-whatsapp: #25d366;
    --color-texto: #1f2937;
    --color-texto-suave: #6b7280;
    --color-borde: #e2e8f0;
    --color-fondo-suave: #f8fafc;
    --color-fondo-admin: #eef2f6;
    --radio: 10px;
    --radio-chico: 7px;
    --sombra: 0 1px 3px rgba(15, 23, 42, 0.08), 0 1px 2px rgba(15, 23, 42, 0.06);
    --sombra-media: 0 4px 14px rgba(15, 23, 42, 0.10);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    color: var(--color-texto);
    background: #fff;
    line-height: 1.5;
}

a { color: var(--color-primario); }

.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 16px;
}

/* --- Login / formularios de acceso --- */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(160deg, #163a5c 0%, #b5482e 100%);
    padding: 16px;
}

.login-box {
    background: #fff;
    border-radius: 14px;
    padding: 32px 26px;
    width: 100%;
    max-width: 380px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.25);
}

.login-box h1 {
    font-size: 1.3rem;
    margin-top: 0;
    margin-bottom: 2px;
    color: var(--color-primario);
    text-align: center;
}

.logo-login {
    display: block;
    width: 92px;
    height: 92px;
    object-fit: contain;
    margin: 0 auto 14px;
}

.subtitulo-login {
    margin: 0 0 6px;
    color: var(--color-texto-suave);
    font-size: 0.88rem;
    line-height: 1.4;
    text-align: center;
}

/* ============================================================
   Panel de administración — fondo y estructura general
   ============================================================ */
.admin-body {
    background: linear-gradient(180deg, #e4f1fa 0%, #eef2f6 260px, #eef2f6 100%);
    min-height: 100vh;
    padding-bottom: 60px;
}

/* ============================================================
   Formularios (compartido login + admin)
   ============================================================ */
form label {
    display: block;
    font-size: 0.88rem;
    font-weight: 600;
    margin-top: 14px;
    margin-bottom: 5px;
    color: #374151;
}

form input[type="text"],
form input[type="email"],
form input[type="password"],
form input[type="number"],
form input[type="search"],
form select,
form textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1.5px solid #d8e6ee;
    border-radius: var(--radio-chico);
    font-size: 0.95rem;
    background: #fbfdfe;
    color: var(--color-texto);
    transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
    font-family: inherit;
}

form input:focus,
form select:focus,
form textarea:focus {
    outline: none;
    border-color: var(--color-agua);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(47, 143, 209, 0.18);
}

form textarea { resize: vertical; }

.campo-password { position: relative; }
.campo-password input { padding-right: 42px; }

.toggle-password {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--color-texto-suave);
    cursor: pointer;
    padding: 0;
}
.toggle-password:hover { color: var(--color-primario); }
.toggle-password.activo { color: var(--color-primario); }

/* Honeypot: oculto visualmente pero presente en el DOM (los bots simples lo rellenan igual) */
.campo-honeypot {
    position: absolute;
    left: -9999px;
    top: -9999px;
    height: 0;
    overflow: hidden;
}

/* ============================================================
   Botones
   ============================================================ */
button, .btn {
    display: inline-block;
    background: var(--color-acento);
    background: linear-gradient(135deg, var(--color-acento) 0%, var(--color-acento-claro) 100%);
    color: #fff;
    border: none;
    border-radius: var(--radio-chico);
    padding: 9px 16px;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    transition: transform 0.1s, box-shadow 0.15s, opacity 0.15s;
    box-shadow: var(--sombra);
    white-space: nowrap;
}

button:hover, .btn:hover { opacity: 0.94; box-shadow: var(--sombra-media); }
button:active, .btn:active { transform: translateY(1px); }

.btn-ancho { width: 100%; margin-top: 20px; padding: 12px 20px; font-size: 1rem; }

.btn-whatsapp { background: var(--color-whatsapp); }
.btn-peligro { background: #dc2626; }
.btn-secundario { background: var(--color-primario); }
.btn-agua { background: var(--color-agua); }
.btn-chico { padding: 6px 12px; font-size: 0.78rem; box-shadow: none; }

/* Botón "Guardar" de fila: sólido en celeste agua, compacto para listas largas */
.btn-fila {
    background: var(--color-agua);
    color: #fff;
    border: none;
    border-radius: var(--radio-chico);
    padding: 6px 12px;
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: none;
    white-space: nowrap;
    transition: opacity 0.15s;
}
.btn-fila:hover { opacity: 0.88; }
.btn-fila:active { transform: translateY(1px); }

/* --- Alertas --- */
.alerta {
    padding: 11px 15px;
    border-radius: var(--radio-chico);
    font-size: 0.9rem;
    margin: 14px 0;
    border-left: 4px solid transparent;
}
.alerta-error { background: #fef2f2; color: #991b1b; border-color: #dc2626; }
.alerta-exito { background: #f0fdf4; color: #166534; border-color: #22c55e; }
.alerta-info  { background: #eff6ff; color: #1e40af; border-color: #3b82f6; }

/* --- Grilla de productos (catálogo) --- */
.grid-productos {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    margin: 20px 0;
}

@media (min-width: 640px) { .grid-productos { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 900px) { .grid-productos { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1100px) { .grid-productos { grid-template-columns: repeat(4, 1fr); } }

.tarjeta-producto {
    border: 1px solid var(--color-borde);
    border-radius: var(--radio);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    background: #fff;
    box-shadow: var(--sombra);
}

.tarjeta-producto img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: contain;
    background: var(--color-fondo-suave);
    padding: 10px;
}

.tarjeta-producto .info { padding: 12px; flex: 1; display: flex; flex-direction: column; }
.tarjeta-producto .precio { font-weight: 700; margin: 6px 0; color: var(--color-primario); }
.tarjeta-producto .codigo { font-size: 0.78rem; color: var(--color-texto-suave); }

/* --- Navbar --- */
.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
    flex-wrap: wrap;
    gap: 10px;
    background: #fff;
    margin: 0 -16px 20px;
    padding-left: 16px;
    padding-right: 16px;
    box-shadow: var(--sombra);
    position: sticky;
    top: 0;
    z-index: 40;
}
.navbar .marca {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 800;
    color: var(--color-primario);
    text-decoration: none;
    font-size: 0.95rem;
    letter-spacing: -0.01em;
}
.logo-navbar {
    width: 46px;
    height: 46px;
    object-fit: contain;
    background: #fff;
    border-radius: 10px;
    padding: 3px;
    transition: transform 0.2s ease;
}
.navbar .marca:hover .logo-navbar { transform: scale(1.06) rotate(-2deg); }
.navbar-acciones { display: flex; align-items: center; gap: 12px; }
.navbar-usuario { font-size: 0.8rem; color: var(--color-texto-suave); }

.navbar-links { display: flex; gap: 2px; flex-wrap: wrap; }
.navbar-links a {
    color: var(--color-texto-suave);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 6px 10px;
    border-radius: 999px;
    transition: background 0.15s, color 0.15s;
}

/* --- Navbar del panel admin: degradado de marca en vez de blanco liso --- */
.navbar-admin {
    background: linear-gradient(115deg, var(--color-primario) 0%, var(--color-acento) 145%);
}
.navbar-admin .marca { color: #fff; }
.navbar-admin .navbar-usuario { color: rgba(255,255,255,0.85); }
.navbar-admin .navbar-links a { color: rgba(255,255,255,0.85); }
.navbar-admin .navbar-links a:hover { background: rgba(255,255,255,0.15); color: #fff; }
.navbar-admin .navbar-links a.activo { background: rgba(255,255,255,0.24); color: #fff; }
.navbar-admin .btn-secundario {
    background: rgba(255,255,255,0.16);
    border: 1px solid rgba(255,255,255,0.4);
    box-shadow: none;
}
.navbar-admin .btn-secundario:hover { background: rgba(255,255,255,0.28); }
.navbar-links a:hover { background: var(--color-fondo-admin); color: var(--color-agua); }

/* --- Botón flotante de WhatsApp / cotización [RNF-U04] --- */
.boton-flotante {
    position: fixed;
    bottom: 18px;
    right: 18px;
    z-index: 50;
    box-shadow: 0 4px 14px rgba(0,0,0,0.2);
    border-radius: 999px;
    padding: 14px 20px;
}

/* ============================================================
   Panel de administración — contenido
   ============================================================ */
.panel-encabezado {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    margin: 0 0 14px;
}
.panel-encabezado h1 {
    margin: 0;
    font-size: 1.25rem;
    color: var(--color-primario);
    letter-spacing: -0.01em;
}

.btn-link {
    background: none;
    border: none;
    color: var(--color-primario);
    text-decoration: none;
    font-weight: 600;
    cursor: pointer;
    font-size: 0.88rem;
    padding: 0;
}
.btn-link:hover { text-decoration: underline; }
.btn-link-peligro { color: #dc2626; }

.estado-vacio {
    padding: 40px 20px;
    text-align: center;
    color: var(--color-texto-suave);
    background: #fff;
    border-radius: var(--radio);
    box-shadow: var(--sombra);
}

/* --- Filtros (tarjeta) --- */
.filtros-form {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    margin-bottom: 18px;
    background: #fff;
    padding: 12px 14px;
    border-radius: var(--radio);
    box-shadow: var(--sombra);
    border-top: 3px solid var(--color-agua);
}
.filtros-form input[type="search"] { flex: 1 1 220px; margin: 0; }
.filtros-form select { flex: 0 1 180px; margin: 0; }
.filtros-form input, .filtros-form select { padding: 8px 12px; }
.filtros-form button { flex: 0 0 auto; }

/* --- Tabla de productos (tarjeta) --- */
.tabla-wrap {
    overflow-x: auto;
    background: #fff;
    border-radius: var(--radio);
    box-shadow: var(--sombra);
    border-top: 3px solid var(--color-agua);
}
table { width: 100%; border-collapse: collapse; min-width: 640px; }
th, td { padding: 10px 14px; border-bottom: 1px solid var(--color-borde); text-align: left; font-size: 0.86rem; }
th {
    background: var(--color-primario);
    color: #fff;
    font-weight: 700;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
tbody tr:hover { background: #f0f7fb; }
tbody tr:last-child td { border-bottom: none; }

.miniatura {
    width: 42px;
    height: 42px;
    object-fit: cover;
    border-radius: 7px;
    display: block;
    box-shadow: var(--sombra);
}
.miniatura-vacia {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-fondo-admin);
    color: #9ca3af;
    font-size: 0.55rem;
    text-align: center;
    border-radius: 7px;
}

.form-rapido { display: flex; gap: 6px; align-items: center; }
.form-rapido input[type="text"] { width: auto; flex: 1 1 200px; max-width: 260px; }
.form-rapido select { width: auto; flex: 0 0 auto; max-width: 150px; padding: 7px 10px; }
.form-rapido button { flex: 0 0 auto; }
.input-chico { width: 90px; padding: 7px 9px !important; }

.campo-precio {
    position: relative;
    display: flex;
    align-items: center;
}
.campo-precio .prefijo-precio {
    position: absolute;
    left: 12px;
    color: var(--color-texto-suave);
    font-weight: 600;
    pointer-events: none;
}
.campo-precio input { padding-left: 26px !important; }
.campo-precio-chico .prefijo-precio { left: 9px; font-size: 0.85rem; }
.campo-precio-chico input { padding-left: 20px !important; }

.acciones-tabla { display: flex; gap: 12px; align-items: center; white-space: nowrap; }
.acciones-tabla form { display: inline; }

.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 700;
}
.badge-activo { background: #dcfce7; color: #166534; }
.badge-inactivo { background: #f1f5f9; color: #64748b; }

/* --- Formulario de producto (tarjeta) --- */
.form-producto {
    max-width: 900px;
    background: #fff;
    padding: 26px 26px 22px;
    border-radius: var(--radio);
    box-shadow: var(--sombra);
    border-top: 3px solid var(--color-acento);
}
.form-producto button[type="submit"] { max-width: 260px; }

.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 28px;
}
@media (min-width: 800px) {
    .form-grid { grid-template-columns: 1.3fr 1fr; }
}

.form-fila-doble {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.ayuda-campo {
    font-size: 0.78rem;
    color: var(--color-texto-suave);
    margin: 4px 0 0;
}

.check-inline {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 400;
    margin-top: 10px;
    font-size: 0.9rem;
}
.check-inline input { width: auto; }

.etiqueta-grupo {
    display: block;
    font-weight: 600;
    font-size: 0.88rem;
    margin-top: 20px;
    margin-bottom: 6px;
    color: #374151;
}

.checkbox-grupo {
    border: 1.5px solid var(--color-borde);
    border-radius: var(--radio-chico);
    padding: 12px 16px;
    max-height: 220px;
    overflow-y: auto;
    background: var(--color-fondo-suave);
}
.checkbox-subtitulo {
    font-weight: 700;
    font-size: 0.8rem;
    color: var(--color-acento);
    text-transform: uppercase;
    letter-spacing: 0.02em;
    margin: 12px 0 3px;
}
.checkbox-subtitulo:first-child { margin-top: 0; }

.preview-imagen {
    width: 100%;
    max-width: 260px;
    aspect-ratio: 4 / 3;
    border: 2px dashed var(--color-borde);
    border-radius: var(--radio);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--color-fondo-suave);
    margin-bottom: 10px;
}
.preview-imagen img { width: 100%; height: 100%; object-fit: contain; padding: 8px; }
.preview-imagen span { color: #9ca3af; font-size: 0.85rem; }

.galeria-admin {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 10px;
}
.galeria-admin-item {
    position: relative;
    width: 72px;
    height: 72px;
}
.galeria-admin-item img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: var(--color-fondo-suave);
    border-radius: 8px;
    border: 1px solid var(--color-borde);
    padding: 3px;
}
.galeria-admin-item form { position: absolute; top: -6px; right: -6px; }
.galeria-admin-borrar {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #dc2626;
    color: #fff;
    border: 2px solid #fff;
    font-size: 0.9rem;
    line-height: 1;
    padding: 0;
    cursor: pointer;
    box-shadow: var(--sombra);
}
.galeria-admin-borrar:hover { background: #b91c1c; }

/* ============================================================
   Sitio público (catálogo, ficha de producto, carrito)
   ============================================================ */
.tienda-body {
    background: linear-gradient(180deg, #dceefb 0%, #eaf3f8 340px, #eef2f6 620px, #eef2f6 100%);
}

/* --- Navbar público: a todo el ancho, propia estructura --- */
.navbar-publico {
    margin: 0;
    padding: 0;
    background: #fff;
    border-bottom: 3px solid transparent;
    border-image: linear-gradient(90deg, var(--color-primario), var(--color-agua), var(--color-acento)) 1;
    transition: box-shadow 0.25s ease;
}
.navbar-publico.scrolled {
    box-shadow: 0 6px 20px rgba(15, 23, 42, 0.12);
}
.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    padding-top: 12px;
    padding-bottom: 12px;
    transition: padding 0.25s ease;
}
.navbar-publico.scrolled .navbar-inner { padding-top: 8px; padding-bottom: 8px; }
.navbar-publico.scrolled .logo-navbar { width: 36px; height: 36px; }

.navbar-publico .navbar-links a { position: relative; }
.navbar-publico .navbar-links a::after {
    content: '';
    position: absolute;
    left: 10px;
    right: 10px;
    bottom: 3px;
    height: 2px;
    background: var(--color-agua);
    border-radius: 2px;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.2s ease;
}
.navbar-publico .navbar-links a:hover::after { transform: scaleX(1); }

/* --- Banner del catálogo: a todo el ancho, con color --- */
.hero-catalogo {
    background: linear-gradient(120deg, #163a5c 0%, #1c4a73 45%, #2f8fd1 85%, #b5482e 140%);
    padding: 44px 0 66px;
    position: relative;
    overflow: hidden;
}
.hero-catalogo::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 12% 20%, rgba(255,255,255,0.12) 0, transparent 38%),
        radial-gradient(circle at 88% 15%, rgba(255,255,255,0.10) 0, transparent 30%),
        radial-gradient(circle at 92% 80%, rgba(181,72,46,0.35) 0, transparent 42%);
    pointer-events: none;
}
/* Ola decorativa: conecta el banner con el resto de la página, evoca agua */
.hero-catalogo::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -1px;
    height: 46px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 60' preserveAspectRatio='none'%3E%3Cpath d='M0 30 Q 150 0 300 30 T 600 30 T 900 30 T 1200 30 V60 H0 Z' fill='%23dceefb'/%3E%3C/svg%3E");
    background-size: 100% 100%;
}
.hero-inner { position: relative; z-index: 1; }
.hero-catalogo h1 {
    font-size: 1.9rem;
    margin: 0 0 10px;
    color: #fff;
    letter-spacing: -0.01em;
}
.hero-catalogo .barra-marca {
    width: 64px;
    height: 4px;
    border-radius: 999px;
    background: linear-gradient(90deg, #fff, var(--color-agua));
    margin-bottom: 14px;
}
.hero-catalogo p { color: rgba(255,255,255,0.85); margin: 0; font-size: 1.02rem; max-width: 560px; }

/* --- Filtros del catálogo --- */
.filtros-publico {
    margin-top: -34px;
    margin-bottom: 26px;
    position: relative;
    z-index: 2;
    border: none;
}
.filtros-publico input[type="search"] {
    background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%236b7280' viewBox='0 0 16 16'%3E%3Cpath d='M11.742 10.344a6.5 6.5 0 1 0-1.397 1.398h-.001c.03.04.062.078.098.115l3.85 3.85a1 1 0 0 0 1.415-1.414l-3.85-3.85a1.007 1.007 0 0 0-.115-.1zM12 6.5a5.5 5.5 0 1 1-11 0 5.5 5.5 0 0 1 11 0z'/%3E%3C/svg%3E") no-repeat 14px center;
    padding-left: 40px !important;
}

.estado-busqueda {
    text-align: center;
    color: var(--color-texto-suave);
    font-size: 0.85rem;
    padding: 10px 0;
}

.aviso-correccion {
    text-align: center;
    background: #eaf5fc;
    color: var(--color-primario);
    font-size: 0.85rem;
    padding: 8px 14px;
    border-radius: var(--radio-chico);
    margin: 0 0 14px;
}

/* --- Tarjeta de producto (catálogo) --- */
.tarjeta-producto {
    transition: transform 0.16s ease, box-shadow 0.16s ease;
    border: 1px solid transparent;
    border-top: 3px solid var(--color-agua);
}
.tarjeta-producto:hover {
    transform: translateY(-3px);
    box-shadow: var(--sombra-media);
    border-color: var(--color-agua);
}
.tarjeta-producto .nombre-producto {
    font-weight: 700;
    color: var(--color-texto);
    text-decoration: none;
    font-size: 0.95rem;
    margin: 4px 0 2px;
    display: block;
}
.tarjeta-producto .nombre-producto:hover { color: var(--color-primario); }
.tarjeta-producto .badge { align-self: flex-start; margin: 4px 0 10px; }
.tarjeta-producto .btn-agregar { margin-top: auto; width: 100%; font-size: 0.85rem; padding: 9px 12px; }
.tarjeta-producto .precio { font-size: 1.05rem; }

.estado-vacio { padding: 50px 20px; }

/* Botón "volver" con flecha animada, usado en catálogo/admin */
.btn-volver {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: #fff;
    color: var(--color-primario);
    border: 1.5px solid var(--color-borde);
    border-radius: 999px;
    padding: 8px 16px 8px 12px;
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    box-shadow: var(--sombra);
    transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn-volver .flecha { display: inline-block; transition: transform 0.15s ease; }
.btn-volver:hover {
    background: var(--color-agua);
    color: #fff;
    border-color: var(--color-agua);
}
.btn-volver:hover .flecha { transform: translateX(-4px); }
.btn-volver:active { transform: scale(0.97); }

.paginacion {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin: 30px 0 10px;
}
.pagina-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 8px;
    background: #fff;
    color: var(--color-texto);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    box-shadow: var(--sombra);
    transition: background 0.15s, color 0.15s;
}
.pagina-link:hover { background: var(--color-fondo-admin); }
.pagina-activa {
    background: var(--color-primario);
    color: #fff;
}
.pagina-activa:hover { background: var(--color-primario); }

/* --- Ficha de producto --- */
.migas-pan { margin: 18px 0 6px; }
.migas-pan a { font-size: 0.88rem; font-weight: 600; text-decoration: none; }
.migas-pan a:hover { text-decoration: underline; }

.ficha-producto {
    display: grid;
    grid-template-columns: 1fr;
    gap: 28px;
    margin-bottom: 40px;
}
@media (min-width: 800px) {
    .ficha-producto { grid-template-columns: 1fr 1.1fr; }
}

.ficha-imagen {
    border-radius: var(--radio);
    overflow: hidden;
    background: var(--color-fondo-suave);
    box-shadow: var(--sombra);
    border-top: 4px solid var(--color-acento);
}
.ficha-imagen img { width: 100%; height: 100%; object-fit: cover; display: block; aspect-ratio: 4/3; }

.ficha-info { background: #fff; padding: 22px 24px; border-radius: var(--radio); box-shadow: var(--sombra); }
.ficha-info h1 { font-size: 1.5rem; margin: 6px 0 8px; color: var(--color-texto); }
.ficha-info .codigo {
    display: inline-block;
    font-size: 0.78rem;
    color: var(--color-agua);
    background: #eaf5fc;
    padding: 3px 10px;
    border-radius: 999px;
    font-weight: 700;
}
.ficha-meta { color: var(--color-texto-suave); font-size: 0.9rem; margin: 10px 0 0; }

.ficha-precio {
    display: block;
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-acento);
    margin: 8px 0 10px;
}

.ficha-descripcion { margin: 18px 0; line-height: 1.6; color: #374151; }

.ficha-compatibilidad {
    margin: 18px 0;
    background: #eaf5fc;
    padding: 12px 16px;
    border-radius: var(--radio-chico);
    border-left: 3px solid var(--color-agua);
}
.ficha-compatibilidad ul { margin: 4px 0 0; padding-left: 20px; }
.ficha-compatibilidad li { font-size: 0.9rem; color: #374151; }

.ficha-acciones {
    display: flex;
    align-items: flex-end;
    gap: 12px;
    margin-top: 22px;
    flex-wrap: wrap;
}
.ficha-acciones label { margin: 0 0 5px; }
.ficha-acciones input { width: 90px; }
.ficha-acciones .btn { flex: 1 1 220px; }

/* --- Carrito de cotización --- */
.carrito-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(120deg, var(--color-primario), var(--color-primario-claro));
    color: #fff;
    padding: 18px 22px;
    border-radius: var(--radio);
    margin-top: 16px;
    font-weight: 700;
    font-size: 1.1rem;
    box-shadow: var(--sombra-media);
}
.carrito-total span:last-child { color: #fff; font-size: 1.5rem; }

.carrito-acciones {
    display: flex;
    gap: 12px;
    margin-top: 20px;
    flex-wrap: wrap;
}
.carrito-acciones .btn-secundario { flex: 0 1 180px; }
.btn-grande { flex: 1 1 260px; font-size: 1.05rem; padding: 14px 20px; text-align: center; }

/* --- Botón flotante con contador --- */
.boton-flotante {
    display: flex;
    align-items: center;
    gap: 8px;
    animation: pulso-flotante 2.4s ease-in-out infinite;
}
@keyframes pulso-flotante {
    0%, 100% { box-shadow: 0 4px 14px rgba(0,0,0,0.2), 0 0 0 0 rgba(37,211,102,0.5); }
    50% { box-shadow: 0 4px 14px rgba(0,0,0,0.2), 0 0 0 8px rgba(37,211,102,0); }
}
.contador-carrito {
    background: #fff;
    color: var(--color-whatsapp);
    border-radius: 999px;
    min-width: 20px;
    height: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.72rem;
    font-weight: 800;
    padding: 0 5px;
}

/* --- Redes sociales flotantes --- */
.redes-flotantes {
    position: fixed;
    right: 18px;
    bottom: 86px;
    z-index: 49;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.red-social {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    box-shadow: var(--sombra-media);
    transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}
.red-social:hover {
    transform: scale(1.12) translateX(-3px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.3);
}
.red-social:active { transform: scale(0.96); }
.red-facebook { background: #1877F2; }
.red-instagram {
    background: radial-gradient(circle at 30% 107%, #fdf497 0%, #fdf497 5%, #fd5949 45%, #d6249f 60%, #285AEB 90%);
}
.red-tiktok { background: #000; }

@media (max-width: 480px) {
    .redes-flotantes { right: 14px; bottom: 78px; gap: 8px; }
    .red-social { width: 38px; height: 38px; }
}

/* --- Lightbox de zoom --- */
.lightbox-overlay {
    position: fixed;
    inset: 0;
    background: rgba(10, 15, 25, 0.92);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 300;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
    padding: 20px;
}
.lightbox-overlay.activo { opacity: 1; pointer-events: auto; }
.lightbox-img {
    max-width: 92vw;
    max-height: 88vh;
    border-radius: 8px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.lightbox-cerrar {
    position: absolute;
    top: 18px;
    right: 20px;
    background: rgba(255,255,255,0.15);
    color: #fff;
    border: none;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    font-size: 1.7rem;
    line-height: 1;
    cursor: pointer;
    box-shadow: none;
}
.lightbox-cerrar:hover { background: rgba(255,255,255,0.3); }

/* --- Carrusel de fotos de producto --- */
.carrusel-producto { display: flex; flex-direction: column; gap: 10px; }
.carrusel-principal {
    position: relative;
    border-radius: var(--radio);
    overflow: hidden;
    background: var(--color-fondo-suave);
    box-shadow: var(--sombra);
    border-top: 4px solid var(--color-acento);
}
.carrusel-principal img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: contain;
    display: block;
    cursor: zoom-in;
    background: var(--color-fondo-suave);
}
.carrusel-flecha {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: rgba(22, 58, 92, 0.75);
    color: #fff;
    border: none;
    font-size: 1.3rem;
    line-height: 1;
    cursor: pointer;
    box-shadow: none;
    display: flex;
    align-items: center;
    justify-content: center;
}
.carrusel-flecha:hover { background: var(--color-primario); }
.carrusel-flecha-izq { left: 10px; }
.carrusel-flecha-der { right: 10px; }

.carrusel-miniaturas {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 2px;
}
.carrusel-miniatura {
    width: 60px;
    height: 60px;
    flex: 0 0 auto;
    object-fit: contain;
    background: var(--color-fondo-suave);
    border-radius: 8px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: border-color 0.15s;
    padding: 3px;
}
.carrusel-miniatura:hover { border-color: var(--color-agua); }
.carrusel-miniatura.activa { border-color: var(--color-acento); }

/* --- Footer público a todo el ancho --- */
.footer-publico {
    background: var(--color-primario);
    margin-top: 40px;
    padding: 30px 0 100px;
}
.footer-inner-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;
    text-align: center;
}
.footer-inner {
    display: flex;
    align-items: center;
    gap: 14px;
}
.logo-footer { width: 46px; height: 46px; object-fit: contain; border-radius: 8px; }
.footer-marca { color: #fff; font-weight: 700; margin: 0; font-size: 1rem; }
.footer-tagline { color: rgba(255,255,255,0.7); margin: 2px 0 0; font-size: 0.85rem; }

/* Insignia de crédito del desarrollador */
.credito-dev {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(0,0,0,0.25);
    border: 1px solid rgba(212,175,90,0.5);
    border-radius: 999px;
    padding: 6px 18px 6px 6px;
    text-decoration: none;
    transition: background 0.15s, border-color 0.15s;
}
.credito-dev:hover { background: rgba(0,0,0,0.4); border-color: rgba(212,175,90,0.9); }
.credito-dev-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid #d4af5a;
}
.credito-dev span { color: #fff; font-size: 0.82rem; }
.credito-dev strong { color: #f2cd7a; }

/* --- Botón flotante: volver arriba --- */
.boton-volver-arriba {
    position: fixed;
    bottom: 18px;
    left: 18px;
    z-index: 50;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--color-primario);
    color: #fff;
    border: none;
    font-size: 1.3rem;
    line-height: 1;
    cursor: pointer;
    box-shadow: var(--sombra-media);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
}
.boton-volver-arriba.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.boton-volver-arriba:hover { background: var(--color-primario-claro); }