/* ═══════════════════════════════════════════════════════
   nav.css — навигация rodinateam.ru
   Depends on base.css (tokens, reset).
   Source: _research/navigation.md
   ═══════════════════════════════════════════════════════ */


/* ─── Header & Nav ───────────────────────────────────── */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: transform 0.3s ease, background-color 0.3s ease, box-shadow 0.3s ease;
}

.site-header.is-scrolled {
    background: rgba(255, 252, 247, 0.85);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
}

.site-header.is-hidden {
    transform: translateY(-100%);
}

.nav-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 20px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: padding 0.3s ease;
}

.site-header.is-scrolled .nav-inner {
    padding: 14px 24px;
}


/* ─── Logo ───────────────────────────────────────────── */

.nav-logo {
    font-family: 'Playfair Display', 'Georgia', serif;
    font-size: 18px;
    font-weight: 600;
    color: var(--black, #1a1a1a);
    text-decoration: none;
    letter-spacing: -0.01em;
    flex-shrink: 0;
}

.nav-logo-dot {
    color: var(--gold, #c9a96e);
}


/* ─── Desktop Links ──────────────────────────────────── */

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-family: 'Onest', sans-serif;
    font-size: 14px;
    font-weight: 400;
    color: var(--black, #1a1a1a);
    text-decoration: none;
    position: relative;
    padding: 4px 0;
    transition: color 0.2s ease;
}

/* Underline animation */
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gold, #c9a96e);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform 0.3s ease;
}

.nav-link.is-active::after {
    transform: scaleX(1);
}

@media (hover: hover) {
    .nav-link:hover::after {
        transform: scaleX(1);
    }
}

.nav-link.is-active {
    font-weight: 500;
}


/* ─── CTA Button ─────────────────────────────────────── */

.nav-cta {
    font-family: 'Onest', sans-serif;
    font-size: 13px;
    font-weight: 500;
    color: #fff;
    background: var(--black, #1a1a1a);
    padding: 10px 24px;
    border-radius: 24px;
    text-decoration: none;
    letter-spacing: 0.02em;
    transition: background-color 0.3s ease, transform 0.2s ease;
    flex-shrink: 0;
    margin-left: 16px;
}

@media (hover: hover) {
    .nav-cta:hover {
        background: var(--gold, #c9a96e);
    }
}

.nav-cta:active {
    transform: scale(0.97);
}


/* ─── Hamburger ──────────────────────────────────────── */

.nav-burger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    padding: 0;
    border: none;
    background: none;
    cursor: pointer;
    gap: 5px;
}

.nav-burger-line {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--black, #1a1a1a);
    border-radius: 1px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

/* Burger -> X animation */
.nav-burger.is-open .nav-burger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-burger.is-open .nav-burger-line:nth-child(2) {
    opacity: 0;
}

.nav-burger.is-open .nav-burger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}


/* ─── Mobile Menu Overlay ────────────────────────────── */

.mobile-menu {
    position: fixed;
    inset: 0;
    background: var(--white, #fffcf7);
    z-index: 1001;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 120px;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.mobile-menu.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

/* Когда меню открыто: шапка поверх overlay, с фоном, X виден */
body.menu-open .site-header {
    transform: translateY(0) !important;
    background: var(--white, #fffcf7);
    z-index: 1002;
}

/* Скрыть куки-баннер когда мобильное меню открыто */
body.menu-open .cookie-banner {
    display: none !important;
}

.mobile-menu-inner {
    text-align: center;
    padding: 24px;
}

.mobile-menu-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 40px;
}

.mobile-menu-link {
    font-family: 'Playfair Display', 'Georgia', serif;
    font-size: 28px;
    font-weight: 400;
    color: var(--black, #1a1a1a);
    text-decoration: none;
    padding: 12px 0;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease, transform 0.4s ease, color 0.2s ease;
}

.mobile-menu.is-open .mobile-menu-link {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered animation */
.mobile-menu.is-open .mobile-menu-link:nth-child(1) { transition-delay: 0.1s; }
.mobile-menu.is-open .mobile-menu-link:nth-child(2) { transition-delay: 0.15s; }
.mobile-menu.is-open .mobile-menu-link:nth-child(3) { transition-delay: 0.2s; }
.mobile-menu.is-open .mobile-menu-link:nth-child(4) { transition-delay: 0.25s; }
.mobile-menu.is-open .mobile-menu-link:nth-child(5) { transition-delay: 0.3s; }

@media (hover: hover) {
    .mobile-menu-link:hover {
        color: var(--gold, #c9a96e);
    }
}

.mobile-menu-cta {
    display: inline-block;
    font-family: 'Onest', sans-serif;
    font-size: 15px;
    font-weight: 500;
    color: #fff;
    background: var(--black, #1a1a1a);
    padding: 14px 40px;
    border-radius: 28px;
    text-decoration: none;
    letter-spacing: 0.02em;
    margin-bottom: 32px;
    transition: background-color 0.3s ease;
}

@media (hover: hover) {
    .mobile-menu-cta:hover {
        background: var(--gold, #c9a96e);
    }
}

.mobile-menu-secondary {
    display: flex;
    justify-content: center;
    gap: 24px;
}

.mobile-menu-secondary a {
    font-family: 'Onest', sans-serif;
    font-size: 13px;
    color: #999;
    text-decoration: none;
    transition: color 0.2s ease;
}

@media (hover: hover) {
    .mobile-menu-secondary a:hover {
        color: var(--gold, #c9a96e);
    }
}


/* ─── Mobile Breakpoint ──────────────────────────────── */

@media (max-width: 767px) {
    .nav-links,
    .nav-cta {
        display: none;
    }

    .nav-burger {
        display: flex;
    }
}


/* ─── Focus Visible ──────────────────────────────────── */

.nav-link:focus-visible,
.nav-cta:focus-visible,
.nav-burger:focus-visible {
    outline: 2px solid var(--gold, #c9a96e);
    outline-offset: 3px;
    border-radius: 2px;
}


/* ─── Prefers Reduced Motion ─────────────────────────── */

@media (prefers-reduced-motion: reduce) {
    .site-header,
    .nav-inner,
    .nav-link,
    .nav-link::after,
    .nav-cta,
    .nav-burger-line,
    .mobile-menu,
    .mobile-menu-link,
    .mobile-menu-cta,
    .mobile-menu-secondary a {
        transition: none !important;
    }
}