:root {
    --page-content-gutter: clamp(1.25rem, 5vw, 6rem);
    --drfc-icon-size: clamp(2rem, 3vw, 3rem);
    --drfc-header-height: max(clamp(100px, 8vw, 180px), calc(clamp(70px, 7vw, 130px) + 30px));
    --section-title-size: clamp(1.875rem, 3.5vw, 4.5rem);
    --section-title-color: #263b49;
    --section-title-line-height: 1.2;
    --section-photo-radius: 16px;
    --color-dark-navy: #26343d;
    --color-steel-blue: #71818a;
    --color-deep-blue: #003E58;
    --color-slate-gray: #c6d0d5;
    --color-cyan-blue: #318bb1;
    --color-white: #FFFFFF;

    --font-main: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-accent: 'Monda', 'Inter', sans-serif;

    --transition-speed: 0.8s;
    --transition-easing: cubic-bezier(0.25, 1, 0.5, 1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

html, body {
    width: 100%;
    min-height: 100%;
    /* clip recorta lo que se sale sin convertir el body en contenedor con scroll
       (así funcionan el menú sticky, "Volver al inicio" y la barra del móvil) */
    overflow-x: clip;
    font-family: var(--font-main);
    background-color: var(--color-dark-navy);
    color: var(--color-white);
}

.drfc-hero {
    position: relative;
    width: 100%;
    height: calc(100vh - var(--drfc-header-height));
    height: calc(100svh - var(--drfc-header-height));
    min-height: 0;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #102a38;
}

.carousel-track {
    position: relative;
    width: 100%;
    height: 100%;
    list-style: none;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    z-index: 1;
    transition: opacity var(--transition-speed) var(--transition-easing),
                visibility var(--transition-speed) var(--transition-easing);
    will-change: opacity, visibility;
    display: flex;
    align-items: center;
}

.hero-slide.active {
    opacity: 1;
    visibility: visible;
    z-index: 2;
}

.slide-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-repeat: no-repeat;
    transform: scale(1.08);
    transition: transform 10s ease-out;
    will-change: transform;
    z-index: 1;
}

.hero-slide.active .slide-bg {
    transform: scale(1);
}

/* Fotografía y encuadre por slide */
.slide-1 .slide-bg { background-image: url('../../../img/encabezados/FOTO1.jpg'); background-position: center 30%; }
.slide-2 .slide-bg { background-image: url('../../../img/encabezados/head5.png'); background-position: center center; }
.slide-3 .slide-bg { background-image: url('../../../img/encabezados/1.jpeg'); background-position: center 40%; }
.slide-4 .slide-bg { background-image: url('https://static.wixstatic.com/media/616bf8_acd7bbeb531240528ed248ed94adc590~mv2.jpg'); background-position: center center; }
.slide-5 .slide-bg { background-image: url('../../../img/servicios/InfraObra.png'); background-position: center center; }
.slide-6 .slide-bg { background-image: url('../../../img/encabezados/acometidas_hero.jpg'); background-position: center center; }
/* Overlay para legibilidad del contenido */
.slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    background: linear-gradient(
        105deg,
        rgba(10, 22, 29, 0.94) 0%,
        rgba(39, 55, 64, 0.84) 46%,
        rgba(14, 48, 65, 0.5) 80%,
        rgba(14, 48, 65, 0.3) 100%
    );
}

.fiber-svg-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 3;
    pointer-events: none;
    overflow: hidden;
}

.fiber-svg {
    width: 100%;
    height: 100%;
}

.fiber-path {
    fill: none;
    stroke: var(--color-steel-blue);
    stroke-width: 1.8;
    stroke-dasharray: 7 8;
    opacity: 0.48;
}

.fiber-path-accent {
    fill: none;
    stroke: var(--color-cyan-blue);
    stroke-width: 2.6;
    stroke-dasharray: 12 12;
    opacity: 0.78;
    filter: drop-shadow(0 0 5px rgba(49, 139, 177, 0.7));
    animation: fiber-stream 7s linear infinite;
}

@keyframes fiber-stream {
    to { stroke-dashoffset: -240; }
}

.fiber-pulse {
    fill: var(--color-cyan-blue);
    filter: drop-shadow(0px 0px 6px var(--color-cyan-blue));
}

.fiber-node {
    fill: var(--color-deep-blue);
    stroke: var(--color-cyan-blue);
    stroke-width: 2;
    filter: drop-shadow(0 0 5px rgba(49, 139, 177, 0.65));
    transition: transform 0.3s ease;
}

.slide-container {
    position: relative;
    z-index: 4;
    width: 100%;
    padding: 0 clamp(1.5rem, 8vw, 12rem);
    pointer-events: none;
}

.slide-content {
    max-width: 72vw;
    pointer-events: none;
}

.slide-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: rgba(23, 159, 203, 0.12);
    border: 1px solid rgba(23, 159, 203, 0.35);
    border-radius: 4px;
    font-family: var(--font-accent);
    font-size: clamp(0.75rem, 1.05vw, 1.5rem);
    font-weight: 700;
    color: var(--color-cyan-blue);
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-bottom: clamp(1rem, 2vw, 2rem);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
    backdrop-filter: blur(4px);
    pointer-events: auto;
}

.slide-badge::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--color-cyan-blue);
    box-shadow: 0 0 8px var(--color-cyan-blue);
}

.slide-1 .slide-badge,
.slide-2 .slide-badge,
.slide-3 .slide-badge,
.slide-4 .slide-badge,
.slide-5 .slide-badge,
.slide-6 .slide-badge {
    color: #ffffff;
    background: rgba(15, 39, 52, 0.94);
    border-color: rgba(247, 249, 250, 0.58);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.45);
}

.slide-1 .slide-badge::before,
.slide-2 .slide-badge::before,
.slide-3 .slide-badge::before,
.slide-4 .slide-badge::before,
.slide-5 .slide-badge::before,
.slide-6 .slide-badge::before {
    background-color: #69dcff;
    box-shadow: 0 0 8px #69dcff;
}

.slide-1 .slide-overlay {
    background: linear-gradient(
        90deg,
        rgba(12, 25, 32, 0.98) 0%,
        rgba(18, 34, 42, 0.94) 38%,
        rgba(20, 43, 55, 0.76) 58%,
        rgba(18, 42, 54, 0.18) 100%
    );
}

.slide-1 .fiber-svg-container {
    clip-path: inset(0 0 0 43%);
    opacity: 0.82;
}

.slide-1 .slide-content {
    width: min(58vw, 850px);
    max-width: none;
    padding-left: clamp(1rem, 2vw, 2rem);
    border-left: 2px solid rgba(105, 220, 255, 0.48);
}

.slide-1 .slide-badge {
    color: #d3e2e8;
    background: rgba(15, 39, 52, 0.72);
    border-color: rgba(105, 220, 255, 0.44);
}

.slide-1 .slide-badge::before {
    background-color: #69dcff;
    box-shadow: 0 0 8px rgba(105, 220, 255, 0.72);
}

.slide-title {
    font-family: var(--font-main);
    font-size: clamp(1.85rem, 5vw, 10rem);
    font-weight: 800;
    line-height: 1.08;
    color: var(--color-white);
    margin-bottom: clamp(1.25rem, 2.5vw, 3rem);
    letter-spacing: 0;
    text-transform: uppercase;
    opacity: 0;
    transform: translateY(25px);
    transition: opacity 0.6s ease 0.15s, transform 0.6s ease 0.15s;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    pointer-events: auto;
}

.slide-1 .slide-title {
    display: flex;
    flex-direction: column;
    gap: 0.2em;
    font-size: 1rem;
    line-height: 1.04;
}

.slide-title-kicker {
    color: #c6d0d5;
    font-size: clamp(0.95rem, 1.35vw, 1.3rem);
    font-weight: 600;
    letter-spacing: 0.08em;
}

.slide-title-main {
    display: block;
    color: #ffffff;
    font-size: clamp(2.5rem, 4.8vw, 5.7rem);
    font-weight: 800;
    line-height: 0.98;
}

.slide-description {
    font-family: var(--font-main);
    font-size: clamp(0.95rem, 1.55vw, 3rem);
    font-weight: 300;
    line-height: 1.6;
    color: var(--color-slate-gray);
    margin-bottom: clamp(1.75rem, 3vw, 3.5rem);
    opacity: 0;
    transform: translateY(25px);
    transition: opacity 0.6s ease 0.3s, transform 0.6s ease 0.3s;
    max-width: min(90%, 75ch);
    pointer-events: auto;
}

/* Botón CTA preparado para iframe de Wix */
.cta-button {
    position: relative;
    z-index: 100;
    pointer-events: auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: clamp(0.85rem, 1.5vw, 1.75rem) clamp(1.8rem, 2.8vw, 4rem);
    background-color: var(--color-deep-blue);
    color: var(--color-white);
    font-family: var(--font-main);
    font-weight: 600;
    font-size: clamp(0.9rem, 1.1vw, 1.75rem);
    text-decoration: none;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 20px rgba(0, 28, 42, 0.32);
    transition: opacity 0.6s ease 0.45s, transform 0.6s ease 0.45s, background-color 0.3s ease, box-shadow 0.3s ease;
    opacity: 0;
    transform: translateY(25px);
    outline: none;
    cursor: pointer;
}

.cta-button svg {
    width: 18px;
    height: 18px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2.5;
    stroke-linecap: round;
    stroke-linejoin: round;
    transition: transform 0.3s ease;
}

.cta-button:hover, 
.cta-button:focus-visible {
    background-color: #205d78;
    box-shadow: 0 6px 28px rgba(0, 28, 42, 0.4);
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.4);
}

.cta-button:hover svg,
.cta-button:focus-visible svg {
    transform: translateX(4px);
}

.cta-button:active {
    transform: translateY(0);
    box-shadow: 0 2px 10px rgba(0, 28, 42, 0.3);
}

.cta-button:focus-visible {
    outline: 3px solid rgba(49, 139, 177, 0.65);
    outline-offset: 3px;
}

/* Activación de Animaciones en slide activo */
.hero-slide.active .slide-badge,
.hero-slide.active .slide-title,
.hero-slide.active .slide-description {
    opacity: 1;
    transform: translateY(0);
}

.hero-slide.active .cta-button {
    opacity: 1;
    transform: translateY(0);
}

/* Botones de Navegación con z-index 100 */
.nav-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    pointer-events: auto;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: rgba(24, 40, 49, 0.82);
    border: 1px solid rgba(198, 208, 213, 0.3);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    backdrop-filter: blur(8px);
    transition: all 0.3s ease;
    outline: none;
}

.nav-arrow:hover,
.nav-arrow:focus-visible {
    background: rgba(23, 159, 203, 0.85);
    border-color: var(--color-cyan-blue);
    box-shadow: 0 0 15px rgba(23, 159, 203, 0.4);
    transform: translateY(-50%) scale(1.08);
}

.nav-arrow:focus-visible {
    outline: 2px solid var(--color-cyan-blue);
    outline-offset: 3px;
}

.nav-arrow svg {
    width: 22px;
    height: 22px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2.2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.nav-prev { left: clamp(1rem, 3vw, 2.5rem); }
.nav-next { right: clamp(1rem, 3vw, 2.5rem); }

/* Controles de Indicadores */
.carousel-controls {
    position: absolute;
    bottom: clamp(1.5rem, 4vh, 3rem);
    left: 0;
    width: 100%;
    z-index: 100;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    pointer-events: none;
}

.indicators-container {
    display: flex;
    align-items: center;
    gap: 12px;
    pointer-events: auto;
    background: rgba(0, 34, 49, 0.6);
    padding: 8px 18px;
    border-radius: 30px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(155, 174, 188, 0.15);
}

.indicator-dot {
    position: relative;
    width: 32px;
    height: 8px;
    border-radius: 4px;
    background: rgba(155, 174, 188, 0.3);
    border: none;
    cursor: pointer;
    overflow: hidden;
    transition: width 0.4s cubic-bezier(0.16, 1, 0.3, 1), background-color 0.3s ease;
    outline: none;
    padding: 0;
    pointer-events: auto;
}

.indicator-dot:hover {
    background: rgba(155, 174, 188, 0.6);
}

.indicator-dot.active {
    width: 50px;
    background: rgba(23, 159, 203, 0.3);
}

.indicator-progress {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 0%;
    background-color: var(--color-cyan-blue);
    border-radius: 4px;
    box-shadow: 0 0 8px var(--color-cyan-blue);
}

.indicator-dot.active .indicator-progress {
    width: 100%;
    transition: width 6s linear;
}

.carousel-paused .indicator-dot.active .indicator-progress {
    animation-play-state: paused;
}

/* Estilos Responsive */
@media (max-width: 992px) {
    :root {
        --drfc-header-height: calc(clamp(48px, 9vw, 64px) + 20px);
    }

    .drfc-hero {
        height: calc(100vh - var(--drfc-header-height));
        height: calc(100svh - var(--drfc-header-height));
    }

    .slide-overlay {
        background: linear-gradient(
            180deg,
            rgba(16, 42, 56, 0.9) 0%,
            rgba(39, 55, 64, 0.9) 50%,
            rgba(16, 42, 56, 0.96) 100%
        );
    }

    .slide-1 .slide-overlay {
        background: linear-gradient(
            180deg,
            rgba(16, 42, 56, 0.34) 0%,
            rgba(16, 35, 45, 0.78) 36%,
            rgba(16, 35, 45, 0.96) 100%
        );
    }

    .slide-1 .fiber-svg-container {
        clip-path: inset(0);
        opacity: 0.3;
    }

    .slide-container {
        text-align: center;
        display: flex;
        justify-content: center;
    }

    .slide-content {
        max-width: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .slide-1 .slide-content {
        width: min(100%, 42rem);
        padding-left: 0;
        border-left: 0;
    }

    .slide-1 .slide-title {
        align-items: center;
        text-align: center;
    }

    .slide-title-main {
        font-size: clamp(2.25rem, 6vw, 4.5rem);
    }

    .slide-description {
        max-width: 100%;
    }

    .nav-arrow {
        width: 44px;
        height: 44px;
        background: rgba(16, 42, 56, 0.9);
    }

    .nav-prev { left: 0.75rem; }
    .nav-next { right: 0.75rem; }
}

@media (max-width: 576px) {
    .nav-arrow {
        display: none; /* En móvil se prioriza navegación por swipe e indicadores */
    }

    .carousel-controls {
        bottom: 1.25rem;
    }

    .indicator-dot {
        width: 24px;
    }

    .indicator-dot.active {
        width: 38px;
    }

    .cta-button {
        width: 100%;
        max-width: 280px;
    }

    .slide-title-kicker {
        font-size: 0.8rem;
    }

    .slide-title-main {
        font-size: clamp(1.5rem, 7.5vw, 2.3rem);
    }

    .fiber-path-accent {
        opacity: 0.48;
    }

}

.fiber-divider {
    width: 100%;
    padding: 20px 0;
    line-height: 0;
}

.fiber-divider svg {
    display: block;
    width: 100%;
    height: 20px;
    overflow: visible;
}

.fiber-divider-base,
.fiber-divider-pulse {
    fill: none;
    stroke-linecap: round;
}

.fiber-divider-base {
    stroke: #1a2b4c;
    stroke-width: 1;
}

.fiber-divider-pulse {
    stroke: #dceaee;
    stroke-width: 3;
    stroke-dasharray: 80 400;
    animation: fiber-divider-light-pulse 3.5s linear infinite;
    filter: drop-shadow(0 0 8px #dceaee);
}

@keyframes fiber-divider-light-pulse {
    from { stroke-dashoffset: 480; }
    to { stroke-dashoffset: -480; }
}