:root {
    --nav-bg: rgba(8, 8, 8, 0.72);
    --nav-bg-solid: #090909;
    --nav-text: #f4f1eb;
    --nav-muted: #a6a29b;
    --nav-accent: #c8a96b;
    --nav-border: rgba(255, 255, 255, 0.1);
    --nav-container: 1440px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    overflow-x: hidden;
}

.site-navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 86px;
    z-index: 9999;
    background: var(--nav-bg);
    border-bottom: 1px solid transparent;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transition: background 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

.site-navbar.scrolled {
    background: rgba(8, 8, 8, 0.96);
    border-bottom-color: var(--nav-border);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.22);
}

.navbar-container {
    width: min(100% - 56px, var(--nav-container));
    height: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 35px;
}

.navbar-brand {
    display: inline-flex;
    align-items: center;
    gap: 11px;
    flex-shrink: 0;
    text-decoration: none;
    color: var(--nav-text);
}

.brand-mark {
    width: 40px;
    height: 40px;
    display: grid;
    place-items: center;
    border: 1px solid var(--nav-accent);
    color: var(--nav-accent);
    font-family: Arial, sans-serif;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
}

.brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1;
}

.brand-text strong {
    font-family: Arial, sans-serif;
    font-size: 17px;
    font-weight: 700;
    letter-spacing: 3px;
}

.brand-text small {
    margin-top: 5px;
    color: var(--nav-accent);
    font-family: Arial, sans-serif;
    font-size: 7px;
    font-weight: 600;
    letter-spacing: 3px;
}

.navbar-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 38px;
    margin-left: auto;
}

.nav-link {
    position: relative;
    padding: 10px 0;
    color: var(--nav-muted);
    font-family: Arial, sans-serif;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.5px;
    text-decoration: none;
    transition: color 0.25s ease;
}

.nav-link::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 0;
    width: 0;
    height: 1px;
    background: var(--nav-accent);
    transform: translateX(-50%);
    transition: width 0.3s ease;
}

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

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

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 22px;
    flex-shrink: 0;
}

.navbar-phone {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--nav-muted);
    font-family: Arial, sans-serif;
    font-size: 12px;
    text-decoration: none;
    white-space: nowrap;
    transition: color 0.25s ease;
}

.navbar-phone:hover {
    color: var(--nav-text);
}

.phone-icon {
    color: var(--nav-accent);
    font-size: 16px;
    transform: rotate(-45deg);
}

.navbar-book {
    min-height: 44px;
    padding: 0 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: #0a0a0a;
    background: var(--nav-accent);
    border: 1px solid var(--nav-accent);
    font-family: Arial, sans-serif;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1.2px;
    text-decoration: none;
    text-transform: uppercase;
    transition: background 0.25s ease, color 0.25s ease, transform 0.25s ease;
}

.navbar-book:hover {
    color: var(--nav-accent);
    background: transparent;
    transform: translateY(-2px);
}

.book-arrow {
    font-size: 16px;
    line-height: 1;
}

.navbar-toggle {
    width: 46px;
    height: 46px;
    padding: 0;
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: 1px solid var(--nav-border);
    cursor: pointer;
}

.navbar-toggle span {
    width: 20px;
    height: 1px;
    display: block;
    background: var(--nav-text);
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.navbar-toggle.open span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.navbar-toggle.open span:nth-child(2) {
    opacity: 0;
}

.navbar-toggle.open span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

@media (max-width: 1100px) {
    .navbar-container {
        width: min(100% - 40px, var(--nav-container));
    }

    .navbar-links {
        gap: 25px;
    }

    .navbar-phone {
        display: none;
    }
}

@media (max-width: 800px) {
    .site-navbar {
        height: 76px;
    }

    .navbar-container {
        width: calc(100% - 32px);
    }

    .navbar-links {
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        max-height: 0;
        overflow: hidden;
        display: flex;
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        gap: 0;
        margin: 0;
        padding: 0 24px;
        background: rgba(9, 9, 9, 0.98);
        border-bottom: 1px solid transparent;
        backdrop-filter: blur(18px);
        -webkit-backdrop-filter: blur(18px);
        transition: max-height 0.4s ease, padding 0.4s ease, border-color 0.4s ease;
    }

    .navbar-links.open {
        max-height: 420px;
        padding-top: 12px;
        padding-bottom: 16px;
        border-bottom-color: var(--nav-border);
    }

    .nav-link {
        width: 100%;
        padding: 17px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        font-size: 14px;
    }

    .nav-link:last-child {
        border-bottom: 0;
    }

    .nav-link::after {
        left: 0;
        bottom: 0;
        transform: none;
    }

    .nav-link:hover::after,
    .nav-link.active::after {
        width: 42px;
    }

    .navbar-actions {
        margin-left: auto;
        gap: 10px;
    }

    .navbar-book {
        min-height: 42px;
        padding: 0 13px;
        font-size: 9px;
    }

    .navbar-toggle {
        display: flex;
    }
}

@media (max-width: 480px) {
    .site-navbar {
        height: 70px;
    }

    .navbar-container {
        width: calc(100% - 24px);
    }

    .navbar-links {
        top: 70px;
        padding-left: 18px;
        padding-right: 18px;
    }

    .brand-mark {
        width: 36px;
        height: 36px;
    }

    .brand-text strong {
        font-size: 15px;
        letter-spacing: 2.5px;
    }

    .brand-text small {
        font-size: 6px;
        letter-spacing: 2.5px;
    }

    .navbar-book {
        display: none;
    }

    .navbar-toggle {
        width: 42px;
        height: 42px;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
}