/* --- VARIABLES Y CONFIGURACIÓN BASE --- */
:root {
    --primary: #1a252f;      /* Azul Acero Oscuro */
    --accent: #3498db;       /* Azul Brillante */
    --success: #27ae60;      /* Verde RPT / Eficiencia */
    --light: #f8f9fa;        /* Fondo claro */
    --dark: #2c3e50;         /* Texto oscuro */
    --white: #ffffff;
    --shadow: 0 4px 12px rgba(0,0,0,0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    color: var(--dark);
    background: var(--white);
    line-height: 1.6;
    font-size: 16px; /* Tamaño base legible para todas las edades */
}

/* --- COMPONENTES GLOBALES --- */
.container {
    max-width: 1100px;
    margin: auto;
    padding: 4rem 20px;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--primary);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--accent);
    margin: 10px auto;
}

.bg-light { background-color: var(--light); }
.bg-dark-section { background-color: var(--primary); padding-bottom: 4rem; }

/* --- NAVEGACIÓN --- */
header {
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 5%;
    max-width: 1200px;
    margin: auto;
}

.logo {
    display: flex;
    align-items: center;
    width: auto;;
   
}

.logo-img {
    height: 60px;
    width: auto;
    display: block;
    transition: all 0.3s ease;
    
}

.nav-links {
    display: flex;
    list-style: none;
    align-items: center;
}

.nav-links li a {
    text-decoration: none;
    color: var(--dark);
    margin-left: 1.8rem;
    font-weight: 600;
    font-size: 0.95rem;
    transition: color 0.3s;
}

.nav-links li a:hover {
    color: var(--accent);
}

/* --- EFECTOS DEL LOGO --- */

/* Sombra sutil para que resalte sobre el blanco */
.logo-img {
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.05));
    transition: all 0.3s ease; /* Transición suave para todos los efectos */
}

/* Efecto al pasar el mouse (Hover) */
.logo:hover .logo-img {
    transform: translateY(-2px); /* Se eleva un poquito */
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.12)) brightness(1.05);
}

/* Efecto al hacer clic (Active) */
.logo:active .logo-img {
    transform: scale(0.95); /* Se achica un poquito, como un botón real */
    filter: brightness(0.9);
}

/* Ajuste para que no se vea el recuadro azul feo al cliquear en móviles */
.logo, .logo-img {
    -webkit-tap-highlight-color: transparent;
    outline: none;
}

footer {
    text-align: center;
    padding: 2rem;
    background: var(--primary);
    color: var(--white);
}

/* --- HERO SECTION --- */
.hero {
    background: linear-gradient(rgba(0,0,0,0.65), rgba(0,0,0,0.65)), 
                url('https://images.unsplash.com/photo-1513506494265-19820f695de8?auto=format&fit=crop&w=1350&q=80') center/cover;
    height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-btns {
    display: flex;
    gap: 15px;
    justify-content: center;
}

/* --- BOTONES --- */
.btn-main {
    background: var(--accent);
    color: white;
    padding: 14px 30px;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 700;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-block;
}

.btn-main:hover {
    background: #2980b9;
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(52, 152, 219, 0.3);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary);
    padding: 14px 30px;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 700;
    transition: 0.3s;
}

/* --- TARJETAS DE SISTEMAS --- */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.model-card {
    background: white;
    padding: 2.5rem 1.5rem;
    border-radius: 12px;
    border: 1px solid #eee;
    transition: all 0.3s ease;
    text-align: center;
    display: flex;
    flex-direction: column;
}

.model-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.model-header {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--primary);
}

.model-tag {
    display: inline-block;
    padding: 5px 15px;
    border-radius: 25px;
    font-size: 0.8rem;
    font-weight: 800;
    margin: 0 auto 20px;
    text-transform: uppercase;
}

.tag-frio { background: #f1f3f5; color: #495057; }
.tag-rpt { background: #d1e7dd; color: #0f5132; }

.highlight {
    border: 2px solid var(--accent);
    position: relative;
}

.premium {
    background: var(--primary);
    color: white;
    border: none;
}

.premium .model-header { color: white; }
.premium .tag-rpt { background: var(--accent); color: white; }

/* --- GALERÍA Y LIGHTBOX --- */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.gallery-item img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    border-radius: 10px;
    cursor: pointer;
    transition: 0.4s;
}

.gallery-item img:hover {
    filter: brightness(0.7);
    transform: scale(1.02);
}

.lightbox {
    display: none;
    position: fixed;
    z-index: 3000;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.92);
    justify-content: center;
    align-items: center;
}

.lightbox img {
    max-width: 90%;
    max-height: 85%;
    border-radius: 4px;
    box-shadow: 0 0 20px rgba(255,255,255,0.1);
}

.close-lightbox {
    position: absolute;
    top: 20px;
    right: 40px;
    color: white;
    font-size: 60px;
    font-weight: 100;
    cursor: pointer;
}

/* --- FORMULARIO Y CONTACTO --- */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 50px;
}

.contact-form-container {
    background: white;
}

input, select, textarea {
    width: 100%;
    padding: 14px;
    margin-bottom: 1.2rem;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 1rem;
    background: #fdfdfd;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.social-box {
    background: #f8f9fa;
    padding: 2.5rem;
    border-radius: 12px;
}

.social-box h3 { margin-bottom: 1.5rem; }
.social-box p { margin-bottom: 1rem; display: flex; align-items: center; gap: 10px; }

.social-icons {
    margin-top: 25px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.social-btn {
    padding: 12px;
    color: white;
    text-decoration: none;
    text-align: center;
    border-radius: 6px;
    font-weight: 700;
    transition: opacity 0.3s;
}

.social-btn:hover { opacity: 0.9; }
.wsp { background: #25d366; }
.insta { background: radial-gradient(circle at 30% 107%, #fdf497 0%, #fdf497 5%, #fd5949 45%,#d6249f 60%,#285AEB 90%); }
.face { background: #1877f2; }


/* --- WHATSAPP FLOTANTE --- */
.wsp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: #25d366;
    color: #FFF;
    border-radius: 50px;
    text-align: center;
    font-size: 30px;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 2px 2px 10px rgba(0,0,0,0.2);
    z-index: 100;
    text-decoration: none;
    transition: transform 0.3s;
}

.wsp-float:hover {
    transform: scale(1.1);
}

/* --- FOOTER --- */
footer {
    background: #0d151c;
    color: rgba(255,255,255,0.7);
    text-align: center;
    padding: 3rem;
}

/* --- RESPONSIVE --- */
@media (max-width: 900px) {
    .contact-wrapper { grid-template-columns: 1fr; }
    .price-inputs { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .nav-links { display: none; } /* Ocultar para menu movil */
    .hero h1 { font-size: 2.2rem; }
    .hero-btns { flex-direction: column; }
    .btn-secondary { margin-left: 0; }
    .section-title { font-size: 1.8rem; }
    .logo {
        margin: 0;
        display: flex;
        justify-content: center;
    }
    .logo-img { height: 50px;
    margin: 0; }
    .navbar { padding: 0.8rem 20px;
              justify-content: center;; }
}

/* --- Estilos para Animación de Entrada --- */
.reveal-hidden {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.reveal-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Delay para que las tarjetas de la grilla aparezcan una tras otra */
.model-card:nth-child(2) { transition-delay: 0.2s; }
.model-card:nth-child(3) { transition-delay: 0.4s; }
.model-card:nth-child(4) { transition-delay: 0.6s; }

/* Botón de eliminar en el panel de admin */
.btn-delete {
    background: none;
    border: 1px solid #ff4444;
    color: #ff4444;
    padding: 5px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
}
.btn-delete:hover {
    background: #ff4444;
    color: white;
}

/* --- WHATSAPP FLOTANTE --- */
.wsp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: #25d366; /* Verde oficial de WhatsApp */
    color: #FFF;
    border-radius: 50px;
    text-align: center;
    width: 65px;
    height: 65px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    z-index: 2500; /* Por encima de todo, incluso del nav */
    text-decoration: none;
    transition: all 0.3s ease;
    animation: pulse-wsp 2s infinite; /* Animación de pulso */
}

.wsp-float i {
    font-size: 35px; /* Tamaño del ícono */
}

.wsp-float:hover {
    transform: scale(1.1);
    background-color: #128c7e; /* Un verde un poco más oscuro al pasar el mouse */
    box-shadow: 0 6px 20px rgba(0,0,0,0.4);
}

/* Animación de pulso para atraer la atención */
@keyframes pulse-wsp {
    0% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
    }
}

/* Ajuste para celulares: un poco más chico para que no tape contenido */
@media (max-width: 768px) {
    .wsp-float {
        width: 55px;
        height: 55px;
        bottom: 20px;
        right: 20px;
    }
    .wsp-float i {
        font-size: 30px;
    }
}

/* Estilos Tabs */
.admin-tabs { display: flex; gap: 10px; margin-bottom: 20px; border-bottom: 2px solid #eee; padding-bottom: 10px; }
.tab-btn { background: none; border: none; padding: 10px 20px; cursor: pointer; font-weight: bold; color: #666; }
.tab-btn.active { color: var(--accent); border-bottom: 3px solid var(--accent); }

/* Cotizador Tabla */
#tabla-cotizacion { width: 100%; border-collapse: collapse; margin-top: 20px; font-size: 0.9rem; }
#tabla-cotizacion th { background: #f4f4f4; padding: 10px; text-align: left; }
#tabla-cotizacion td { padding: 10px; border-bottom: 1px solid #eee; }

.cotizador-form { display: grid; grid-template-columns: 2fr 1fr auto; gap: 10px; margin-bottom: 20px; }
.total-area { margin-top: 20px; padding: 15px; background: #e9f7ef; border-radius: 8px; display: flex; justify-content: space-between; align-items: center; }
#total-general { font-size: 1.5rem; color: var(--success); }

@media (max-width: 600px) {
    .cotizador-form { grid-template-columns: 1fr; }
}

.reveal-hidden {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}
.reveal-visible {
    opacity: 1;
    transform: translateY(0);
}