/* --- CONFIGURACIÓN DE IDENTIDAD COMERCIAL --- */
:root {
    --illia-blue: #0A1D37;
    /* Azul Corporativo Profundo */
    --illia-accent: #0077B6;
    /* Azul Eléctrico / Eficiencia */
    --illia-accent-hover: #0096C7;
    --illia-light-bg: #F8FAFC;
    /* Gris Técnico Claro */
    --illia-text: #334155;
    /* Texto de Cuerpo */
    --illia-border: #E2E8F0;
    /* Líneas de división limpias */
    --color-white: #FFFFFF;
    --color-whatsapp: #25D366;
    /* Verde Oficial WA */
    --radius-premium: 6px;
    --font-premium: 'Inter', sans-serif;
    --shadow-premium: 0 10px 30px rgba(10, 29, 55, 0.05);
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-premium);
    background-color: var(--color-white);
    color: var(--illia-blue);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.container {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 25px;
}

/* Reducción general de padding entre secciones en desktop */
section {
    padding: 75px 0;
    position: relative;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* --- TIPOGRAFÍA ULTRA LIMPIA E INTER FINO --- */
h1,
h2,
h3,
h4 {
    font-family: var(--font-premium);
    color: var(--illia-blue);
    letter-spacing: -0.03em;
}

h1 {
    font-size: 3.2rem;
    line-height: 1.15;
    font-weight: 300;
}

h2 {
    font-size: 2.2rem;
    margin-bottom: 15px;
    text-align: left;
}

h3 {
    font-size: 1.25rem;
    margin-bottom: 10px;
    font-weight: 500;
}

p {
    color: var(--illia-text);
    font-size: 1rem;
    font-weight: 300;
}

.text-left-desc {
    text-align: left;
    max-width: 700px;
    margin: 0 0 40px 0;
}

/* --- BOTONES --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-family: var(--font-premium);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-premium);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
}

.btn-illia {
    background-color: var(--illia-accent);
    color: var(--color-white);
    box-shadow: 0 4px 12px rgba(0, 119, 182, 0.2);
}

.btn-illia:hover {
    background-color: var(--illia-blue);
    box-shadow: 0 6px 18px rgba(10, 29, 55, 0.2);
    transform: translateY(-2px);
}

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

.btn-outline:hover {
    background-color: var(--illia-blue);
    color: var(--color-white);
    transform: translateY(-2px);
}

.btn-hero-outline {
    background-color: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

.btn-hero-outline:hover {
    background-color: var(--color-white);
    color: var(--illia-blue);
    transform: translateY(-2px);
}

/* --- HEADER Y NAVBAR --- */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: var(--shadow-premium);
}

.top-bar {
    background-color: var(--illia-blue);
    color: var(--color-white);
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.05em;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-info span {
    margin-right: 25px;
    opacity: 0.9;
}

.nav-bar {
    background-color: var(--color-white);
    height: 85px;
    transition: var(--transition);
}

.nav-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo-box h1 {
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--illia-blue);
    letter-spacing: -0.01em;
}

.logo-box span {
    display: block;
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--illia-accent);
    font-weight: 500;
    margin-top: 1px;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

nav a {
    font-family: var(--font-premium);
    color: var(--illia-blue);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

nav a:hover {
    color: var(--illia-accent);
}

.nav-btn-cta {
    background-color: var(--illia-accent);
    color: var(--color-white) !important;
    padding: 10px 20px;
    border-radius: var(--radius-premium);
}

.nav-btn-cta:hover {
    background-color: var(--illia-blue);
}

/* --- CAROUSEL PRINCIPAL CON TEXTOS DINÁMICOS --- */
#hero-section {
    position: relative;
    height: 85vh;
    min-height: 550px;
    padding: 0;
    display: flex;
    align-items: center;
    overflow: hidden;
    background-color: var(--illia-blue);
}

.carousel-viewport {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.carousel-track {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s cubic-bezier(0.4, 0, 0.2, 1);
}

.carousel-slide.active {
    opacity: 0.65;
}

.carousel-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, rgba(10, 29, 55, 0.95) 0%, rgba(10, 29, 55, 0.75) 45%, rgba(10, 29, 55, 0.3) 100%);
    z-index: 2;
}

.hero-content-wrapper {
    position: relative;
    z-index: 3;
    width: 100%;
    padding-top: 80px;
}

.hero-content {
    max-width: 650px;
}

.hero-content h1 {
    color: var(--color-white);
    margin-bottom: 20px;
    text-align: left;
}

.hero-content h1,
.hero-content p {
    transition: opacity 0.4s ease-in-out;
}

.hero-content p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 35px;
    font-weight: 200;
}

.hero-cta-group {
    display: flex;
    gap: 15px;
}

.carousel-nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: var(--color-white);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 4;
    font-size: 1.2rem;
    transition: var(--transition);
}

.carousel-nav-btn:hover {
    background: var(--color-white);
    color: var(--illia-blue);
    border-color: var(--color-white);
}

.carousel-nav-btn.prev-slide {
    left: 30px;
}

.carousel-nav-btn.next-slide {
    right: 30px;
}

.carousel-indicators {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 4;
}

.indicator-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 1px solid var(--color-white);
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: var(--transition);
}

.indicator-dot.active {
    background: var(--color-white);
    width: 24px;
    border-radius: 10px;
}

/* --- MICRO-CARRUSELES INDEPENDIENTES DE SECCIÓN --- */
.split-carousel-container {
    position: relative;
    width: 100%;
    height: 450px;
    border-radius: var(--radius-premium);
    overflow: hidden;
    box-shadow: var(--shadow-premium);
    background-color: var(--illia-blue);
}

.section-track {
    width: 100%;
    height: 100%;
    position: relative;
}

.section-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.6s ease-in-out;
    z-index: 1;
}

.section-slide.active {
    opacity: 1;
    z-index: 2;
}

.inner-nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(10, 29, 55, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--color-white);
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    font-size: 0.9rem;
    border-radius: 50%;
    transition: var(--transition);
}

.inner-nav-btn:hover {
    background: var(--illia-accent);
    border-color: var(--illia-accent);
}

.inner-nav-btn.prev-sec {
    left: 15px;
}

.inner-nav-btn.next-sec {
    right: 15px;
}

.inner-indicators {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 10;
}

.sec-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: var(--transition);
}

.sec-dot.active {
    background: var(--color-white);
    width: 18px;
    border-radius: 4px;
}

.slide-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(transparent, rgba(10, 29, 55, 0.85));
    color: var(--color-white);
    padding: 20px;
    font-size: 0.85rem;
    font-weight: 300;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    z-index: 3;
}

/* --- GRID DE SOLUCIONES --- */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.solution-card {
    background-color: var(--color-white);
    border: 1px solid var(--illia-border);
    border-radius: var(--radius-premium);
    padding: 35px 30px;
    box-shadow: var(--shadow-premium);
    transition: var(--transition);
}

.solution-card:hover {
    transform: translateY(-5px);
    border-color: var(--illia-accent);
}

.solution-card .icon-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--illia-accent);
    font-weight: 600;
    display: block;
    margin-bottom: 15px;
}

/* --- FILAS ALTERNADAS --- */
.split-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

#aperturas-pvc .split-row {
    grid-template-columns: 0.9fr 1.1fr;
}

/* --- FORMULARIO --- */
#formulario-obras {
    background-color: var(--illia-light-bg);
    border-top: 1px solid var(--illia-border);
}

.form-card-illia {
    background-color: var(--color-white);
    border: 1px solid var(--illia-border);
    border-radius: var(--radius-premium);
    box-shadow: var(--shadow-premium);
    max-width: 850px;
    margin: 0 auto;
    padding: 45px;
}

.illia-form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 25px;
    margin-bottom: 25px;
}

.illia-field-full {
    grid-column: span 2;
}

.form-field label {
    display: block;
    font-family: var(--font-premium);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--illia-blue);
    margin-bottom: 8px;
}

.input-text-illia {
    width: 100%;
    background-color: var(--illia-light-bg);
    border: 1px solid var(--illia-border);
    padding: 14px;
    font-family: var(--font-premium);
    font-size: 0.95rem;
    color: var(--illia-blue);
    border-radius: var(--radius-premium);
    outline: none;
    transition: var(--transition);
}

.input-text-illia:focus {
    border-color: var(--illia-accent);
    background-color: var(--color-white);
    box-shadow: 0 0 0 4px rgba(0, 119, 182, 0.1);
}

.upload-blueprint-area {
    border: 2px dashed var(--illia-border);
    border-radius: var(--radius-premium);
    padding: 30px 20px;
    text-align: center;
    cursor: pointer;
    background-color: var(--illia-light-bg);
    transition: var(--transition);
}

.upload-blueprint-area:hover {
    border-color: var(--illia-accent);
    background-color: var(--color-white);
}

.upload-blueprint-area p {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--illia-blue);
}

.form-card-illia .btn-illia {
    width: 100%;
}

/* --- FOOTER ALINEADO A LA IZQUIERDA --- */
footer {
    background-color: var(--illia-blue);
    color: var(--color-white);
    padding: 65px 0 35px 0;
}

.footer-grid-layout {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 50px;
    margin-bottom: 50px;
}

.footer-logo h3 {
    font-size: 1.5rem;
    color: #fff;
    margin-bottom: 2px;
}

.footer-logo span {
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--illia-accent);
    display: block;
    margin-bottom: 18px;
}

.footer-logo p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
    max-width: 400px;
    font-weight: 200;
}

.footer-col h4 {
    font-family: var(--font-premium);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: #ffffff;
    margin-bottom: 18px;
    font-weight: 600;
}

.footer-col ul {
    list-style: none;
}

.footer-col li {
    margin-bottom: 10px;
}

.footer-col a {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.85rem;
}

.footer-col a:hover {
    color: #fff;
}

.footer-bottom-bar {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding-top: 30px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.3);
    text-align: left;
}

/* --- CAPTADORES FLOTANTES FIJOS --- */
.float-asset-box {
    position: fixed;
    bottom: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    transition: var(--transition);
}

.wa-float-visible {
    right: 30px;
    width: 55px;
    height: 55px;
    background-color: var(--color-whatsapp);
    border-radius: 50%;
    box-shadow: 0 8px 24px rgba(37, 211, 102, 0.3);
    animation: bounceLight 3s infinite;
}

.wa-float-visible:hover {
    transform: scale(1.08) translateY(-3px);
    box-shadow: 0 12px 28px rgba(37, 211, 102, 0.45);
}

.wa-float-visible svg {
    width: 28px;
    height: 28px;
    fill: #ffffff;
}

.top-float-premium {
    right: 95px;
    width: 44px;
    height: 44px;
    background-color: var(--color-white);
    border: 1px solid var(--illia-border);
    color: var(--illia-blue);
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    box-shadow: var(--shadow-premium);
}

.top-float-premium.active {
    opacity: 1;
    visibility: visible;
}

.top-float-premium:hover {
    background-color: var(--illia-blue);
    color: var(--color-white);
    border-color: var(--illia-blue);
    transform: translateY(-3px);
}

@keyframes bounceLight {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-5px);
    }
}

/* ==========================================
   OPTIMIZACIÓN RESPONSIVA MÓVIL (ULTRA FLUIDA)
   ========================================== */
@media (max-width: 992px) {

    /* Relleno compacto de secciones en móvil */
    section {
        padding: 45px 0 !important;
    }

    /* Espacio ajustado abajo (75px) para dar lugar a los puntos por debajo de los botones */
    #hero-section {
        height: auto;
        min-height: auto;
        padding: 105px 0 75px 0 !important;
    }

    .carousel-overlay {
        background: linear-gradient(180deg, rgba(10, 29, 55, 0.95) 0%, rgba(10, 29, 55, 0.82) 100%);
    }

    .hero-content-wrapper {
        padding-top: 0;
    }

    .hero-content {
        max-width: 100%;
        text-align: left;
    }

    h1 {
        font-size: 2.1rem;
        line-height: 1.2;
    }

    h2 {
        font-size: 1.6rem;
        margin-bottom: 12px;
    }

    .hero-content p {
        font-size: 1rem;
        margin-bottom: 25px;
    }

    .hero-cta-group {
        flex-direction: column;
        gap: 12px;
        margin-bottom: 15px;
        /* Margen inferior para alejar los botones de los puntos */
    }

    .hero-cta-group .btn {
        width: 100%;
    }

    /* Ubicación fija de los puntos debajo de todo el contenido */
    .carousel-indicators {
        bottom: 20px;
    }

    .text-left-desc {
        margin: 0 0 25px 0;
    }

    /* Reducción de distancias en cuadrículas */
    .solutions-grid,
    .split-row,
    #aperturas-pvc .split-row,
    .illia-form-grid,
    .footer-grid-layout {
        grid-template-columns: 1fr !important;
        gap: 25px !important;
    }

    .illia-field-full {
        grid-column: span 1;
    }

    /* Proporción móvil para carruseles de sección */
    .split-carousel-container {
        height: 280px;
    }

    .carousel-nav-btn,
    .inner-nav-btn {
        display: none;
        /* Ocultamos flechas laterales para no obstruir la vista móvil */
    }

    /* Tarjeta de formulario ajustada a pantalla táctil */
    .form-card-illia {
        padding: 24px 18px;
    }

    .upload-blueprint-area {
        padding: 22px 12px;
    }

    /* Ocultar menú largo predeterminado en pantallas chicas */
    nav {
        display: none;
    }

    .top-bar {
        display: none;
    }

    /* Reposicionamiento sutil de botones flotantes */
    .float-asset-box {
        bottom: 20px;
    }

    .wa-float-visible {
        right: 20px;
        width: 50px;
        height: 50px;
    }

    .wa-float-visible svg {
        width: 25px;
        height: 25px;
    }

    .top-float-premium {
        right: 80px;
        width: 40px;
        height: 40px;
    }
}