:root {
    --white: #ffffff;
    --text-dark: #1a2332;
    --accent-burgundy: #6b1c23;
    --accent-burgundy-hover: #55161c;
    --radius-pill: 999px;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 300;
    background: rgba(255, 255, 255, 0.98);
    transition:
        background 0.4s cubic-bezier(0.4, 0, 0.2, 1),
        box-shadow 0.4s cubic-bezier(0.4, 0, 0.2, 1),
        backdrop-filter 0.4s ease;
}

.site-header.site-header--scrolled {
    background: rgba(255, 255, 255, 0.62);
    backdrop-filter: saturate(180%) blur(18px);
    -webkit-backdrop-filter: saturate(180%) blur(18px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.05);
}

.site-header__inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem clamp(1.25rem, 4vw, 2rem);
    padding-top: max(1rem, env(safe-area-inset-top, 0px));
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    flex-shrink: 0;
}

.logo {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--white);
    object-fit: cover;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.nav {
    display: flex;
    align-items: center;
    gap: clamp(0.75rem, 2vw, 2rem);
    flex-wrap: wrap;
    justify-content: flex-end;
}

.nav__links {
    display: flex;
    align-items: center;
    gap: clamp(1rem, 2.5vw, 2.25rem);
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav__links a {
    display: inline-flex;
    align-items: center;
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    white-space: nowrap;
    padding: 0.5rem 0.9rem;
    margin: 0 -0.15rem;
    border-radius: 0.5rem;
    transition: background 0.2s ease, color 0.2s ease;
}

.nav__links a:hover {
    background: rgba(107, 28, 35, 0.08);
    color: var(--accent-burgundy);
}

.nav__links a[aria-current="page"] {
    color: var(--accent-burgundy);
    font-weight: 600;
}

.nav__links a:focus-visible {
    outline: 2px solid rgba(107, 28, 35, 0.35);
    outline-offset: 2px;
}

.btn-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.65rem 1.35rem;
    background: var(--accent-burgundy);
    color: var(--white);
    font-weight: 600;
    font-size: 0.9rem;
    border: none;
    border-radius: var(--radius-pill);
    cursor: pointer;
    text-decoration: none;
    transition: transform 0.15s, box-shadow 0.15s, background 0.2s;
    white-space: nowrap;
}

.btn-cta:hover {
    background: var(--accent-burgundy-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(107, 28, 35, 0.25);
}

.nav__toggle {
    display: none;
    background: transparent;
    border: none;
    color: var(--text-dark);
    padding: 0.5rem;
    cursor: pointer;
}

@media (max-width: 900px) {
    .nav__links {
        display: none;
    }

    .nav__toggle {
        display: block;
    }

    .nav.nav--open .nav__links {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: calc(100% + 0.5rem);
        left: 1.25rem;
        right: 1.25rem;
        background: var(--white);
        padding: 1rem 1.25rem;
        border-radius: 12px;
        gap: 0.5rem;
        box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
        border: 1px solid rgba(0, 0, 0, 0.06);
    }

    .nav.nav--open .nav__links a {
        color: var(--text-dark);
    }

    .site-header__inner {
        position: relative;
    }
}

@media (max-width: 640px) {
    .site-header__inner {
        padding-left: max(0.75rem, env(safe-area-inset-left, 0px));
        padding-right: max(0.75rem, env(safe-area-inset-right, 0px));
        gap: 0.65rem;
    }

    .logo {
        width: 48px;
        height: 48px;
    }

    .btn-cta {
        padding: 0.55rem 0.95rem;
        font-size: 0.82rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .site-header {
        transition: none;
    }

    .btn-cta:hover {
        transform: none;
    }
}