:root {
    --pf-black: #000000;
    --pf-white: #ffffff;
}

body {
    background-color: var(--pf-white);
    color: var(--pf-black);
}

.navbar-proformia {
    border-bottom: 2px solid var(--pf-black);
}

.navbar-proformia .navbar-brand img {
    height: 40px;
    width: auto;
}

.navbar-proformia .nav-link {
    color: var(--pf-black);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.5rem 1.25rem;
    border: 2px solid transparent;
    transition: all 0.2s ease;
}

.navbar-proformia .nav-link:hover,
.navbar-proformia .nav-link:focus {
    color: var(--pf-white);
    background-color: var(--pf-black);
    border-color: var(--pf-black);
}

.hero-megatron {
    background-color: var(--pf-black);
    color: var(--pf-white);
    min-height: 420px;
    display: flex;
    align-items: center;
}

.hero-megatron h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    line-height: 1.1;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.hero-megatron p {
    font-size: 1.15rem;
    max-width: 560px;
    opacity: 0.9;
}

.card-proformia {
    border: 2px solid var(--pf-black);
    border-radius: 0;
    height: 100%;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card-proformia:hover {
    transform: translateY(-4px);
    box-shadow: 8px 8px 0 var(--pf-black);
}

.card-proformia .card-title {
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.card-proformia .btn-proformia {
    background-color: var(--pf-black);
    color: var(--pf-white);
    border: 2px solid var(--pf-black);
    border-radius: 0;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.card-proformia .btn-proformia:hover {
    background-color: var(--pf-white);
    color: var(--pf-black);
}

.footer-proformia {
    background-color: var(--pf-black);
    color: var(--pf-white);
    padding: 2.5rem 0;
}

.footer-proformia img {
    height: 44px;
    width: auto;
}