/* ==================================================
           HERO (SLIDER)
        ================================================== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            background: var(--color-dark);
            overflow: hidden;
        }

        .hero-slider {
            position: absolute;
            inset: 0;
            z-index: 0;
        }

        .hero-slider .slide {
            position: absolute;
            inset: 0;
            opacity: 0;
            transition: opacity 1.2s ease-in-out;
            will-change: opacity;
        }

        .hero-slider .slide.active {
            opacity: 1;
        }

        .hero-slider .slide img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .hero-slider::after {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(6, 59, 99, 0.5);
            background: linear-gradient(135deg, rgba(6, 59, 99, 0.2) 0%, rgba(17, 24, 32, 0.7) 100%);
            z-index: 1;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            padding: 6rem 0 4rem;
            color: var(--color-white);
            /* Tag, logo, subtitulo, texto y meta van centrados; los botones
               (.hero-buttons) quedan fuera de este centrado a proposito,
               ya que text-align no afecta el justify-content de un flex. */
            text-align: center;
        }

        .hero-tag {
            font-size: 0.8rem;
            letter-spacing: 0.25em;
            text-transform: uppercase;
            color: var(--color-gold);
            margin-bottom: 1rem;
            opacity: 0;
            animation: fadeUp 0.8s ease 0.2s forwards;
        }

        .hero h1 {
            margin-bottom: 1.5rem;
            opacity: 0;
            animation: fadeUp 0.8s ease 0.4s forwards;
        }
        .hero-logo {
            display: block;
            margin: 0 auto;
            width: clamp(220px, 30vw, 380px);
            height: auto;
            /* drop-shadow (no box-shadow) para que se lea bien encima de
               cualquier foto del slider, sin caja blanca detras */
            filter: drop-shadow(0 4px 18px rgba(0, 0, 0, 0.45));
        }

        .hero-sub {
            font-size: 1.3rem;
            font-weight: 300;
            letter-spacing: 0.1em;
            margin-bottom: 1.5rem;
            opacity: 0;
            animation: fadeUp 0.8s ease 0.6s forwards;
        }

        .hero-text {
            font-size: 1.1rem;
            font-weight: 300;
            max-width: 550px;
            opacity: 0.8;
            margin: 0 auto 2.5rem;
            opacity: 0;
            animation: fadeUp 0.8s ease 0.8s forwards;
        }

        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            opacity: 0;
            animation: fadeUp 0.8s ease 1s forwards;
        }

        .hero-meta {
            margin-top: 3.5rem;
            display: flex;
            justify-content: center;
            gap: 2.5rem;
            font-size: 0.75rem;
            letter-spacing: 0.15em;
            text-transform: uppercase;
            color: rgba(255, 255, 255, 0.2);
            opacity: 0;
            animation: fadeUp 0.8s ease 1.2s forwards;
        }
        .hero-meta span {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .hero-meta i {
            color: var(--color-gold);
        }

        .scroll-indicator {
            position: absolute;
            bottom: 2.5rem;
            left: 50%;
            transform: translateX(-50%);
            color: rgba(255, 255, 255, 0.4);
            font-size: 1.6rem;
            animation: bounce 2s infinite;
            z-index: 2;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.2rem;
            font-size: 0.7rem;
            letter-spacing: 0.1em;
            text-transform: uppercase;
        }
        .scroll-indicator i {
            font-size: 1.2rem;
        }

        @keyframes fadeUp {
            0% {
                opacity: 0;
                transform: translateY(30px);
            }
            100% {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes bounce {
            0%,
            100% {
                transform: translateX(-50%) translateY(0);
            }
            50% {
                transform: translateX(-50%) translateY(10px);
            }
        }

        /* ==================================================
           INTRODUCCIÓN
        ================================================== */
        .intro {
            padding: 6rem 0;
            background: var(--color-white);
        }

        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }

        .intro-text .section-title {
            font-size: clamp(2.6rem, 4.5vw, 4rem);
            line-height: 1.1;
        }

        .intro-text .section-title span {
            color: var(--color-gold);
        }

        .intro-text p {
            font-size: 1.05rem;
            font-weight: 300;
            color: #3a4a5a;
            margin: 1.5rem 0 2rem;
            max-width: 500px;
        }

        .intro-stats {
            display: flex;
            gap: 3rem;
            margin-top: 2rem;
        }
        .intro-stats .stat {
            text-align: left;
        }
        .intro-stats .stat-number {
            font-family: var(--font-serif);
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1;
        }
        .intro-stats .stat-number span {
            color: var(--color-gold);
        }
        .intro-stats .stat-label {
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: #6a7a8a;
            margin-top: 0.2rem;
        }

        .intro-image {
            position: relative;
            overflow: hidden;
        }
        .intro-image img {
            width: 100%;
            height: 450px;
            object-fit: cover;
            filter: grayscale(0.1) contrast(1.02);
            transition: var(--transition);
        }
        .intro-image:hover img {
            transform: scale(1.02);
        }
        .intro-image .gold-accent {
            position: absolute;
            bottom: -10px;
            left: -10px;
            width: 100px;
            height: 100px;
            border: 2px solid var(--color-gold);
            opacity: 0.3;
            pointer-events: none;
        }

        /* ==================================================
           SERVICIOS (con fondo de imagen)
        ================================================== */
        .services {
            padding: 6rem 0;
            position: relative;
            background: var(--color-gray);
        }

        .bg-services {
            background-image: url('../assets/fondoqueofrecemos.jpg');
            background-size: cover;
            background-position: center;
            background-attachment: fixed; /* efecto parallax opcional */
        }
        .bg-services::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(6, 59, 99, 0.2);
            z-index: 0;
        }
        .bg-services .container {
            position: relative;
            z-index: 1;
        }
        .bg-services .section-title,
        .bg-services .section-subtitle,
        .bg-services .service-item h3,
        .bg-services .service-item p,
        .bg-services .service-item .number {
            color: #fff;
        }
        .bg-services .section-subtitle {
            color: var(--color-gold);
        }
        .bg-services .service-item {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(2px);
            border-bottom-color: rgba(255, 255, 255, 0.2);
        }
        .bg-services .service-item h3 {
            color: var(--color-primary);
        }
        .bg-services .service-item p {
            color: #3a4a5a;
        }
        .bg-services .service-item .number {
            color: var(--color-primary);
            opacity: 0.2;
        }
        .bg-services .service-item:hover {
            border-bottom-color: var(--color-gold);
        }
        .bg-services .gold-line {
            background: var(--color-gold);
        }

        .services-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 4rem;
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2.5rem;
        }

        .service-item {
            background: var(--color-white);
            padding: 2.5rem 2rem;
            transition: var(--transition);
            border-bottom: 3px solid transparent;
            position: relative;
            cursor: default;
        }
        .service-item:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow);
            border-bottom-color: var(--color-gold);
        }

        .service-item .number {
            font-family: var(--font-serif);
            font-size: 3.2rem;
            font-weight: 700;
            color: var(--color-primary);
            opacity: 0.15;
            line-height: 1;
            margin-bottom: 0.5rem;
            transition: var(--transition);
        }
        .service-item:hover .number {
            opacity: 0.3;
            color: var(--color-gold);
        }

        .service-item h3 {
            font-family: var(--font-serif);
            font-size: 1.4rem;
            margin-bottom: 0.5rem;
            color: var(--color-primary);
        }
        .service-item p {
            font-size: 0.95rem;
            font-weight: 300;
            color: #4a5a6a;
            line-height: 1.6;
        }

        .service-item .gold-line-small {
            width: 30px;
            height: 2px;
            background: var(--color-gold);
            margin: 0.8rem 0 1rem;
        }

        /* ==================================================
           PROYECTOS
        ================================================== */
        .projects {
            padding: 6rem 0;
            background: var(--color-white);
        }

        .projects-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            flex-wrap: wrap;
            gap: 2rem;
            margin-bottom: 3.5rem;
        }
        .projects-header .section-title {
            margin-bottom: 0;
        }

        .projects-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }

        .project-card {
            position: relative;
            overflow: hidden;
            background: var(--color-dark);
            cursor: pointer;
        }
        .project-card img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            transition: var(--transition);
            filter: grayscale(0.2) contrast(1.05);
        }
        .project-card:hover img {
            transform: scale(1.05);
            filter: grayscale(0) contrast(1.1);
        }

        .project-card .overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 2rem 1.5rem 1.5rem;
            background: linear-gradient(0deg, rgba(6, 59, 99, 0.9) 0%, transparent);
            color: var(--color-white);
            transform: translateY(20px);
            transition: var(--transition);
            opacity: 0;
        }
        .project-card:hover .overlay {
            transform: translateY(0);
            opacity: 1;
        }

        .project-card .overlay h4 {
            font-family: var(--font-serif);
            font-size: 1.3rem;
            font-weight: 700;
        }
        .project-card .overlay .meta {
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--color-gold);
            margin-top: 0.2rem;
        }