:root {
    --color-primary: #0D6EFD;
    --color-secondary: #20C997;
    --color-bg-light: #F8F9FA;
    --color-bg-dark: #212529;
    --color-text-main: #343A40;
    --color-text-secondary: #6C757D;
    /* Fondos */
    --bg-main: #F5F7FA;        /* gris muy claro */
    --bg-section: #E9EDF2;     /* gris frío */
    --bg-dark-soft: #2B3440;   /* azul grisáceo oscuro */

    /* Primarios */
    --blue-primary: #1F3A5F;   /* azul petróleo */
    --teal-primary: #1FA6A0;   /* verde tecnológico */

    /* Acento */
    --violet-accent: #7A6CCF;  /* violeta SUAVE (clave) */

    /* Texto */
    --text-main: #2E2E2E;
    --text-light: #FFFFFF;
    --text-muted: #6C757D;
}

body {
    background-color: var(--color-bg-light);
    color: var(--color-text-main);
}

.hero-header {
    background: linear-gradient(135deg, var(--color-bg-dark), var(--color-primary));
    padding: 5rem 1rem;
}

.hero-logo {
    max-width: 320px;
    width: 100%;
    border-radius: 1.25rem;
    background-color: #ffffff;
    padding: 0.75rem;
}

.hero-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: #e9ecef;
}

.navbar {
    background-color: var(--color-bg-dark);
}

.navbar .nav-link {
    color: #ffffff;
}

.navbar .nav-link:hover,
.navbar .nav-link.active {
    color: var(--color-secondary);
}

.carousel-section {
    background-color: #343A40;
    box-shadow: inset 0 10px 30px rgba(0, 0, 0, 0.4);
}

.carousel-control-prev,
.carousel-control-next {
    background-color: #343A40;
    width: 15%;
}

.carousel-control-prev-icon,
.carousel-control-next-icon {
    filter: invert(1);
}

.carousel img {
    max-height: 450px;
    object-fit: cover;
}

.carousel-item img {
    width: 100%;
    height: 380px;
    object-fit: contain;
    background-color: #343A40;
}

.empresa-section {
    background-color: #2e2e2e;
    /* gris tecnológico */
}

.flip-card {
    background-color: transparent;
    width: 100%;
    height: 280px;
    perspective: 1000px;
    /* profundidad 3D */
}

.flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.7s ease;
    transform-style: preserve-3d;
}

.flip-card:hover .flip-card-inner {
    transform: rotateY(180deg);
}

.flip-card-front,
.flip-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
    text-align: center;
}

.flip-card-front {
    background: linear-gradient(145deg, #1f3a5f, #2b4f7a);
    color: #ffffff;
}

.flip-card-front i {
    font-size: 3rem;
    margin-bottom: 15px;
}

.flip-card-front h4 {
    margin: 0;
}

.flip-card-back {
    background-color: #3a3a3a;
    color: #e0e0e0;
    transform: rotateY(180deg);
}

.cta-section {
    background-color: var(--blue-primary);
    color: var(--text-light);
}

.btn-cta {
    background-color: var(--violet-accent);
    color: #ffffff;
    font-weight: 600;
    padding: 12px 30px;
    border-radius: 30px;
    border: none;
}

.btn-cta:hover {
    background-color: #6A5BC2;
}

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

.btn-primary:hover {
    background-color: #084298;
}

.btn-secondary {
    background-color: var(--color-secondary);
    border: none;
}

footer {
    background-color: var(--color-bg-dark);
}

footer i {
    color: var(--color-secondary);
    font-size: 1.2rem;
}

html {
    scroll-behavior: smooth;
}

/* =======================
   EXPERIENCIA - HOME
======================= */

.experience-section {
    background-color: #f2f4f8;
}

.experience-title {
    font-weight: 700;
    color: #1f3a5f;
}

.experience-subtitle {
    color: #6c757d;
    max-width: 600px;
    margin: 0 auto;
}

.experience-card {
    background-color: #ffffff;
    border-radius: 16px;
    padding: 30px 20px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.experience-card h3 {
    font-size: 2rem;
    color: #6f42c1; /* violeta del logo */
    margin-bottom: 8px;
}

.experience-card p {
    margin: 0;
    color: #495057;
}

.experience-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.15);
}

/* Logos */
.experience-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 40px;
    flex-wrap: wrap;
}

.experience-logos img {
    max-height: 50px;
    opacity: 0.7;
    filter: grayscale(100%);
    transition: all 0.3s ease;
}

.experience-logos img:hover {
    opacity: 1;
    filter: grayscale(0%);
    transform: scale(1.05);
}

/* Botón */
.btn-outline-experience {
    border: 2px solid #6f42c1;
    color: #6f42c1;
    padding: 10px 28px;
    border-radius: 30px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-outline-experience:hover {
    background-color: #6f42c1;
    color: #ffffff;
}


@media (max-width: 768px) {
    .hero-header {
        padding: 3rem 1rem;
    }

    .hero-title {
        font-size: 1.8rem;
    }

    .hero-logo {
        max-width: 240px;
    }
}