/* ============================================
   BDK Wheels Solutions S.R.L. — Header
   Animație stil ComStudio: transparent pe hero,
   solid la scroll, logo micșorează
   ============================================ */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1.5rem var(--gutter, 24px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: transparent;
    backdrop-filter: none;
    border-bottom: none;
    transition: background 0.8s cubic-bezier(0.22, 1, 0.36, 1),
                padding 0.8s cubic-bezier(0.22, 1, 0.36, 1),
                box-shadow 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

/* Starea scroll: fundal solid navy + blur */
.header.scrolled {
    background: rgba(10, 22, 40, 0.82);
    backdrop-filter: blur(14px);
    box-shadow: 0 1px 0 rgba(255, 107, 0, 0.3);
    padding: 0.75rem var(--gutter, 24px);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    transition: height 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

/* Header-ul trebuie să întindă sigla la marginea din stânga și
   meniul la marginea din dreapta — anulez centrarea .container
   doar în interiorul header-ului. */
.header .header-inner.container {
    max-width: 100%;
    width: 100%;
    padding: 0 24px;
}

/* Header fără padding exterior — padding-ul vine din header-inner,
   ca sigla să fie lipită de marginea din stânga (24px, nu 48px). */
.header {
    padding: 1.5rem 0;
}

.header.scrolled {
    padding: 0.75rem 0;
}

/* Sigla lipită de marginea din stânga */
.header .logo {
    margin-right: auto;
}

/* Meniul împins spre marginea din dreapta */
.header .nav {
    margin-left: auto;
}

.header.scrolled .header-inner {
    height: 48px;
}

/* Logo: transparent pe hero (cu glow crem), la scroll
   se micșorează — stil ComStudio */
.logo img {
    height: 72px;
    width: auto;
    /* Formă: pătrat cu colțuri ușor rotunjite (finalizat după interațiuni:
       inițial cerc forțat -> dreptunghi complet -> pătrat cu colțuri rotunjite
       acceptat de client). */
    border-radius: 8px;
    filter: drop-shadow(0 2px 12px rgba(0, 0, 0, 0.5));
    transition: height 0.8s cubic-bezier(0.22, 1, 0.36, 1),
                filter 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.header.scrolled .logo img {
    height: 40px;
    filter: drop-shadow(0 1px 6px rgba(0, 0, 0, 0.35));
}

.nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
    transition: color 0.25s ease;
    position: relative;
    padding: 6px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--orange);
    transition: width 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

.nav-link:hover {
    color: var(--orange-text);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-cta {
    background: var(--orange);
    color: var(--navy) !important;   /* 6.35:1 — WCAG AA */
    padding: 10px 20px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: background 0.25s ease, transform 0.25s ease,
                box-shadow 0.25s ease;
    text-decoration: none;
}

.nav-cta:hover {
    background: var(--orange-light);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(255, 107, 0, 0.4);
}

/* Hamburger mobil */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: var(--transition);
}

/* Mobile: nav-ul devine dropdown */
@media (max-width: 768px) {
    .nav {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: rgba(10, 22, 40, 0.98);
        backdrop-filter: blur(16px);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        transform: translateY(-120%);
        transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
    }

    .nav.active {
        transform: translateY(0);
    }

    .nav-toggle {
        display: flex;
    }

    .logo img {
        height: 56px;
    }

    .header.scrolled .logo img {
        height: 40px;
    }
}