/* ===================== */
/* 1. CSS Variables      */
/* ===================== */
:root {
    --primary: #1a2a5e;
    --primary-light: #2c4a9e;
    --accent: #e8a035;
    --dark: #0d1117;
    --light: #f4f6f9;
    --text: #333333;
    --text-light: #ffffff;
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;
}

/* ===================== */
/* 2. Base / Reset       */
/* ===================== */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--text);
    margin: 0;
    padding: 0;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--primary);
}

a {
    color: var(--primary-light);
    transition: color 0.3s ease;
}

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

section {
    padding: 5rem 0;
}

/* ===================== */
/* 3. Navbar             */
/* ===================== */
.navbar {
    background-color: var(--primary) !important;
    padding: 1rem 0;
    transition: padding 0.3s ease, background-color 0.3s ease;
}

.navbar.shrink {
    padding: 0.4rem 0;
    background-color: rgba(26, 42, 94, 0.95) !important;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.navbar-brand {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--text-light) !important;
    letter-spacing: 0.5px;
}

.navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.85) !important;
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: color 0.3s ease;
}

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

/* ===================== */
/* 4. Hero               */
/* ===================== */
.hero-home {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--text-light);
    background: linear-gradient(135deg, var(--primary) 0%, var(--dark) 100%);
}

.hero-home h1 {
    color: var(--text-light);
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero-home p {
    font-size: 1.4rem;
    margin-bottom: 2rem;
}

.hero-home .btn {
    margin: 0.5rem;
}

/* Hero interno (paginas secundarias) */
.hero-inner {
    background-color: var(--primary);
    color: var(--text-light);
    padding: 4rem 0 3rem;
    text-align: center;
}

.hero-inner h1 {
    color: var(--text-light);
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.hero-inner .breadcrumb {
    justify-content: center;
    margin-bottom: 0;
}

.hero-inner .breadcrumb-item a {
    color: var(--accent);
}

.hero-inner .breadcrumb-item.active {
    color: rgba(255, 255, 255, 0.7);
}

/* ===================== */
/* 5. Buttons            */
/* ===================== */
.btn-accent {
    background-color: var(--accent);
    color: var(--dark);
    border: none;
    font-weight: 600;
    padding: 0.75rem 2rem;
    border-radius: 0.375rem;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.btn-accent:hover {
    background-color: #d4912e;
    color: var(--dark);
    transform: translateY(-2px);
}

.btn-outline-light:hover {
    background-color: var(--accent);
    border-color: var(--accent);
    color: var(--dark);
}

.btn-primary-custom {
    background-color: var(--primary);
    color: var(--text-light);
    border: none;
    font-weight: 600;
    padding: 0.75rem 2rem;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.btn-primary-custom:hover {
    background-color: var(--primary-light);
    color: var(--text-light);
    transform: translateY(-2px);
}

/* ===================== */
/* 6. Section Styles     */
/* ===================== */
.section-light {
    background-color: var(--light);
}

.section-dark {
    background-color: var(--dark);
    color: var(--text-light);
}

.section-dark h2,
.section-dark h3 {
    color: var(--text-light);
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: 2.2rem;
    position: relative;
    display: inline-block;
    padding-bottom: 0.75rem;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--accent);
}

/* ===================== */
/* 7. Cards              */
/* ===================== */
.service-card {
    border: none;
    border-radius: 0.75rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.service-card .card-body {
    padding: 2rem;
}

.service-card .card-icon {
    font-size: 3rem;
    color: var(--accent);
    margin-bottom: 1rem;
}

.service-card .card-title {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--primary);
}

/* Stat cards (energia) */
.stat-card {
    text-align: center;
    padding: 2rem 1rem;
}

.stat-card .stat-number {
    font-family: var(--font-heading);
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--accent);
}

.stat-card .stat-label {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 0.5rem;
}

/* ===================== */
/* 8. Contact Form       */
/* ===================== */
#contacto {
    background-color: var(--light);
}

.contact-form .form-control,
.contact-form .form-select {
    border: 1px solid #dee2e6;
    padding: 0.75rem 1rem;
    border-radius: 0.375rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.contact-form .form-control:focus,
.contact-form .form-select:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 0.2rem rgba(44, 74, 158, 0.25);
}

.contact-info i {
    color: var(--accent);
    font-size: 1.3rem;
    width: 2rem;
}

.contact-info p {
    margin-bottom: 1rem;
}

/* ===================== */
/* 9. Footer             */
/* ===================== */
footer {
    background-color: var(--dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 3rem 0 1.5rem;
}

footer h5 {
    color: var(--text-light);
    font-family: var(--font-heading);
    margin-bottom: 1.2rem;
}

footer a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

footer .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
    margin-top: 2rem;
    text-align: center;
    font-size: 0.9rem;
}

/* ===================== */
/* 10. Energia page      */
/* ===================== */
.badge-spec {
    background-color: var(--primary-light);
    color: var(--text-light);
    font-size: 0.95rem;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    margin: 0.25rem;
}

.phase-card {
    border-left: 4px solid var(--accent);
    padding: 1.5rem 2rem;
    background: var(--text-light);
    border-radius: 0 0.5rem 0.5rem 0;
    margin-bottom: 1.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.phase-card h3 {
    font-size: 1.3rem;
}

.lego-unit {
    background-color: var(--primary);
    color: var(--text-light);
    padding: 1.5rem;
    border-radius: 0.5rem;
    text-align: center;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.1rem;
}

.sector-icon {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 0.75rem;
}

/* ===================== */
/* 12. CTA Band          */
/* ===================== */
.cta-band {
    background-color: var(--primary);
    color: var(--text-light);
    padding: 4rem 0;
    text-align: center;
}

.cta-band h2 {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

/* ===================== */
/* 13. Language Switcher */
/* ===================== */
.lang-switcher {
    display: flex;
    align-items: center;
}

.btn-lang {
    color: rgba(255, 255, 255, 0.7);
    font-weight: 600;
    font-size: 0.85rem;
    padding: 0.25rem 0.5rem;
    border: none;
    background: none;
    cursor: pointer;
    transition: color 0.3s ease;
}

.btn-lang:hover,
.btn-lang.active {
    color: var(--accent);
}

/* ===================== */
/* 14. Case Cards        */
/* ===================== */
.case-card {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 0.75rem;
    padding: 2rem 1.5rem;
    text-align: center;
    height: 100%;
}

.case-card .case-number {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--accent);
}

.case-card h5 {
    color: var(--text-light);
}

/* ===================== */
/* 15. Video Section     */
/* ===================== */
#video-dke video {
    border-radius: 0.5rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

/* ===================== */
/* 16. Responsive        */
/* ===================== */
@media (max-width: 991.98px) {
    .hero h1 {
        font-size: 2.2rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    .hero-inner h1 {
        font-size: 2rem;
    }

    section {
        padding: 3.5rem 0;
    }

    .hero {
        background-attachment: scroll;
    }

    .badge-spec {
        font-size: 0.8rem;
        padding: 0.4rem 0.75rem;
        display: inline-block;
        margin-bottom: 0.3rem;
    }

    .phase-card {
        padding: 1.2rem 1.2rem;
    }

    .case-card .case-number {
        font-size: 1.8rem;
    }
}

@media (max-width: 575.98px) {
    .hero h1,
    .hero-home h1 {
        font-size: 1.8rem;
    }

    .hero p,
    .hero-home p {
        font-size: 1rem;
    }

    .hero-inner h1 {
        font-size: 1.6rem;
    }

    .hero-inner .lead {
        font-size: 0.95rem;
    }

    .section-title h2 {
        font-size: 1.5rem;
    }

    .stat-card .stat-number {
        font-size: 1.8rem;
    }

    .stat-card {
        padding: 1rem 0.5rem;
    }

    .stat-card p {
        font-size: 0.8rem;
    }

    .service-card .card-body {
        padding: 1.2rem;
    }

    .service-card .card-icon {
        font-size: 2.2rem;
    }

    .badge-spec {
        font-size: 0.75rem;
        padding: 0.3rem 0.6rem;
    }

    .case-card {
        padding: 1.2rem 1rem;
    }

    .case-card .case-number {
        font-size: 1.5rem;
    }

    .cta-band {
        padding: 2.5rem 0;
    }

    .cta-band h2 {
        font-size: 1.4rem;
    }

    .phase-card {
        padding: 1rem 1rem;
    }

    .phase-card h4 {
        font-size: 1.1rem;
    }

    .navbar-brand {
        font-size: 1.1rem;
    }

    footer {
        text-align: center;
    }
}