header.nav {
    position: sticky;
    top: 0;
    z-index: 40;
    backdrop-filter: saturate(140%) blur(8px);
    background: linear-gradient(180deg, rgba(15, 17, 21, .85), rgba(15, 17, 21, .65));
    border-bottom: 1px solid rgba(255, 255, 255, .06);
    width: 100%;
    max-width: 1120px; /* Ставим ширину шапки такой же, как у основного контента */
    margin: 0 auto; /* Центрируем шапку */
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
}

.brand {
    display: flex;
    align-items: center;
}

.brand h1 {
    font-family: "Playfair Display", serif;
    font-size: 18px;
    margin: 0;
    letter-spacing: .2px;
}

nav ul {
    display: flex;
    gap: 18px;
    list-style: none;
    margin: 0;
    padding: 0;
}

nav a {
    padding: 8px 12px;
    border-radius: 999px;
    color: var(--muted);
    transition: .25s ease;
    position: relative;
}

nav a::after {
    content: "";
    position: absolute;
    left: 12px;
    right: 12px;
    bottom: 6px;
    height: 2px;
    background: linear-gradient(90deg, var(--acc), var(--acc-2));
    transform: scaleX(0);
    transition: transform .25s ease;
    border-radius: 2px;
}

nav a:hover {
    color: var(--ink);
    background: rgba(255, 255, 255, .06);
    cursor: pointer; /* Изменяем курсор на указатель */
}

nav a:hover::after {
    transform: scaleX(1);
}

.cta {
    display: flex;
    gap: 8px;
}

.btn {
    display: inline-flex;
    align-items: center;
    padding: 10px 14px;
    border-radius: 12px;
    font-weight: 600;
    background: linear-gradient(180deg, var(--acc), #5f45ff);
    box-shadow: 0 8px 24px rgba(123, 92, 255, .35);
    position: relative;
    overflow: hidden;
    transition: transform .18s ease, box-shadow .18s ease;
}

.btn.alt {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, .12);
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 30px rgba(123, 92, 255, .45);
}

.btn::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, transparent, rgba(255, 255, 255, .18), transparent);
    transform: translateX(-120%);
}

.btn:hover::before {
    transition: transform .45s ease;
    transform: translateX(120%);
}

/* Бургер-меню */
.burger-menu {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 30px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 50;
    position: relative;
}

.burger-menu span {
    width: 100%;
    height: 3px;
    background: var(--ink);
    border-radius: 2px;
    transition: all 0.3s ease;
    transform-origin: center;
    position: absolute;
    left: 0;
}

.burger-menu span:nth-child(1) {
    top: 6px;
}

.burger-menu span:nth-child(2) {
    top: 50%;
    transform: translateY(-50%);
}

.burger-menu span:nth-child(3) {
    bottom: 6px;
}

.burger-menu.active span:nth-child(1) {
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
}

.burger-menu.active span:nth-child(2) {
    opacity: 0;
    transform: translateY(-50%) scale(0);
}

.burger-menu.active span:nth-child(3) {
    bottom: auto;
    top: 50%;
    transform: translateY(-50%) rotate(-45deg);
}

/* Мобильное меню */
.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: linear-gradient(180deg, rgba(15, 17, 21, .98), rgba(15, 17, 21, .95));
    backdrop-filter: saturate(140%) blur(8px);
    z-index: 45;
    padding-top: 80px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-menu.open {
    opacity: 1;
    visibility: visible;
}

.mobile-menu nav {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    gap: 30px;
}

.mobile-menu ul {
    display: flex;
    flex-direction: column;
    gap: 24px;
    list-style: none;
    margin: 0;
    padding: 0;
    align-items: center;
}

.mobile-menu ul li a {
    font-size: 20px;
    padding: 12px 24px;
    display: block;
    color: var(--ink);
    text-decoration: none;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.mobile-menu ul li a:hover {
    background: rgba(255, 255, 255, .1);
    color: var(--acc);
}

.mobile-cta {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: center;
    margin-top: 20px;
}

.mobile-cta .btn {
    width: auto;
    min-width: 200px;
}

/* Медиа-запросы */
@media (max-width: 950px) {
    .nav-inner {
        padding: 14px 20px;
    }
    
    nav ul {
        display: none; /* Скрываем навигацию */
    }
    
    .brand h1 {
        font-size: 16px;
    }
    
    .btn {
        padding: 8px 12px;
        font-size: 13px;
    }
    
    .burger-menu {
        display: flex;
    }
    
    .mobile-menu {
        display: block;
    }
}

@media (max-width: 768px) {
    .nav-inner {
        padding: 12px 16px;
    }
    
    .brand h1 {
        font-size: 15px;
    }
    
    .cta {
        gap: 6px;
    }
    
    .btn {
        padding: 7px 10px;
        font-size: 12px;
    }
}

@media (max-width: 600px) {
    .nav-inner {
        justify-content: space-between; /* Бренд слева, бургер справа */
        padding: 10px 12px;
    }

    nav ul,
    .cta {
        display: none; /* Скрываем навигацию и кнопки */
    }

    .brand h1 {
        font-size: 16px;
    }
    
    .burger-menu {
        display: flex;
    }
    
    .mobile-menu {
        display: block;
    }
}

@media (max-width: 480px) {
    .nav-inner {
        padding: 8px 10px;
    }
    
    .brand h1 {
        font-size: 16px;
    }
}