.logo-link {
        gap: 6px;
    }

:root {
    --header-height: 96px;
}

.main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
}

.main-header[data-theme="dark"] {
    background: rgba(12, 18, 24, 0.96);
}

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

.main-header.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    padding: var(--space-md) 0;
}

.nav-wrapper {
    max-width: var(--container-max);
    margin-left: clamp(var(--space-sm), 2.5vw, var(--space-2xl));
    margin-right: clamp(var(--space-4xl), 8vw, var(--space-6xl));
    padding-left: clamp(var(--space-sm), 1.5vw, var(--space-lg));
    padding-right: clamp(var(--space-2xl), 6vw, var(--space-4xl));
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: clamp(var(--space-3xl), 5vw, var(--space-5xl));
    min-height: var(--header-height);
}

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

.logo-link {
    display: flex;
    flex-direction: column;
    line-height: 1;
}

.logo-text {
    font-family: var(--font-primary);
    font-size: var(--text-2xl);
    font-weight: 800;
    color: var(--color-secondary);
    letter-spacing: -0.02em;
}

.logo-subtitle {
    font-size: var(--text-xs);
    color: var(--color-gray);
    text-transform: uppercase;
    letter-spacing: 0.18em;
    margin-top: 4px;
}

.nav-main {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex: 1;
    min-width: 0;
    gap: clamp(var(--space-2xl), 4vw, var(--space-4xl));
    padding-left: clamp(var(--space-2xl), 3vw, var(--space-4xl));
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: clamp(var(--space-lg), 2.5vw, var(--space-2xl));
    list-style: none;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-secondary);
    padding: var(--space-sm) 0;
    position: relative;
    transition: color var(--transition-base);
    white-space: nowrap;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.is-active,
.nav-link[data-state="active"] {
    color: var(--color-primary);
}

.nav-link:hover::after,
.nav-link.is-active::after,
.nav-link[data-state="active"]::after {
    width: 100%;
}

.has-dropdown > .nav-link::after {
    bottom: -6px;
}

.has-dropdown:hover > .nav-link,
.has-dropdown[aria-expanded="true"] > .nav-link {
    color: var(--color-primary);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + var(--space-md));
    left: 0;
    min-width: 240px;
    background: var(--color-white);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
    z-index: 1001;
}

.has-dropdown:hover .dropdown-menu,
.has-dropdown[aria-expanded="true"] .dropdown-menu,
.has-dropdown.is-open .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li + li {
    margin-top: var(--space-sm);
}

.dropdown-menu a {
    display: block;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    color: var(--color-secondary);
    font-size: var(--text-sm);
    transition: all var(--transition-fast);
}

.dropdown-menu a:hover,
.dropdown-menu a[data-state="active"] {
    background: var(--color-light);
    color: var(--color-primary);
    transform: translateX(6px);
}

.nav-cta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-shrink: 0;
}

.btn-phone {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-secondary);
    font-weight: 600;
    white-space: nowrap;
    padding: calc(var(--space-sm) + 2px) var(--space-md);
    border-radius: var(--radius-md);
    transition: color var(--transition-base), background var(--transition-base);
}

.btn-phone:hover {
    color: var(--color-primary);
    background: rgba(192, 57, 43, 0.08);
}

.btn-primary--nav {
    min-height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding-inline: var(--space-xl);
}

.icon-phone {
    width: 20px;
    height: 20px;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    transition: background var(--transition-base);
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-secondary);
    border-radius: var(--radius-full);
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.mobile-menu-toggle.is-active span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.mobile-menu-toggle.is-active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.is-active span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

.nav-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(12, 18, 24, 0.65);
    backdrop-filter: blur(6px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
    z-index: 900;
}

.nav-backdrop.is-active {
    opacity: 1;
    visibility: visible;
}

@media (max-width: 1280px) {
    .nav-wrapper {
        gap: var(--space-3xl);
    }

    .nav-main {
        gap: var(--space-xl);
    }
}

@media (max-width: 1100px) {
    .nav-wrapper {
        flex-wrap: wrap;
        padding: 0 var(--container-padding);
        gap: var(--space-lg) clamp(var(--space-xl), 4vw, var(--space-3xl));
        align-items: flex-start;
    }

    .logo {
        flex: 0 0 auto;
    }

    .nav-main {
        order: 2;
        flex: 1 1 100%;
        justify-content: space-between;
        align-items: center;
        padding-left: 0;
        padding-top: var(--space-sm);
        border-top: 1px solid rgba(44, 62, 80, 0.12);
        gap: var(--space-lg);
    }

    .nav-menu {
        flex-wrap: wrap;
        gap: var(--space-lg) var(--space-md);
        justify-content: flex-start;
    }

    .nav-cta {
        order: 1;
        margin-left: auto;
        gap: var(--space-sm);
    }

    .nav-cta .btn-primary--nav {
        padding-inline: var(--space-lg);
    }
}

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

@media (max-width: 768px) {
    :root {
        --header-height: 58px;
    }

    .nav-container {
        padding: var(--space-xs) 0;
    }

    .nav-wrapper {
        margin: 0;
        padding: clamp(0.4rem, 1.6vw, 0.65rem) clamp(var(--space-md), 6vw, var(--space-2xl));
        gap: var(--space-md);
        min-height: auto;
    }

    .mobile-menu-toggle {
        display: flex;
        z-index: 1100;
    }

    .nav-main {
        position: fixed;
        inset: 0;
        height: 100vh;
        padding: calc(var(--space-4xl) + 20px) var(--space-xl) var(--space-4xl);
        background: rgba(12, 18, 24, 0.96);
        backdrop-filter: blur(12px);
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-3xl);
        transform: translateX(100%);
        transition: transform var(--transition-base);
        box-shadow: var(--shadow-xl);
        overflow-y: auto;
    }

    .nav-main.is-active {
        transform: translateX(0);
    }

    .nav-menu {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-xl);
        width: 100%;
    }

    .nav-link {
        color: rgba(255, 255, 255, 0.85);
        font-size: var(--text-lg);
    }

    .nav-link::after {
        background: rgba(255, 255, 255, 0.6);
    }

    .dropdown-menu {
        position: static;
        width: 100%;
        background: rgba(255, 255, 255, 0.08);
        box-shadow: none;
        border-radius: var(--radius-md);
        padding: 0 var(--space-lg);
        margin-top: 0;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        max-height: 0;
        overflow: hidden;
        transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base), max-height var(--transition-base), padding var(--transition-base), margin var(--transition-base);
    }

    .dropdown-menu.is-open,
    .has-dropdown.is-open .dropdown-menu {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
        max-height: 600px;
        padding: var(--space-md) var(--space-lg);
        margin-top: var(--space-sm);
    }

    .dropdown-menu a {
        color: rgba(255, 255, 255, 0.78);
        padding: var(--space-sm) 0;
        transform: none;
    }

    .dropdown-menu a:hover,
    .dropdown-menu a[data-state="active"] {
        color: var(--color-primary-light);
        background: none;
    }

    .nav-cta {
        flex-direction: column;
        align-self: center;
        align-items: center;
        gap: var(--space-md);
        margin-top: auto;
        margin-inline: auto;
        width: auto;
        max-width: clamp(16rem, 70vw, 22rem);
    }

    .btn-phone {
        width: auto;
        justify-content: center;
        text-align: center;
        min-width: clamp(16rem, 70vw, 20rem);
        padding-inline: clamp(var(--space-lg), 8vw, var(--space-2xl));
        color: rgba(255, 255, 255, 0.92);
        background: rgba(255, 255, 255, 0.08);
        padding-block: clamp(var(--space-md), 3.5vw, var(--space-xl));
    }

    .btn-phone:hover {
        background: rgba(255, 255, 255, 0.12);
        color: var(--color-white);
    }

    .btn-primary--nav {
        display: inline-flex;
        width: auto;
        justify-content: center;
        min-width: clamp(16rem, 70vw, 20rem);
        padding-inline: clamp(var(--space-lg), 8vw, var(--space-2xl));
        background: var(--color-primary);
        border: none;
        padding-block: clamp(var(--space-md), 3.5vw, var(--space-xl));
    }
}

@media (max-width: 480px) {
    :root {
        --header-height: 72px;
    }

    .logo-text {
        font-size: 1.45rem;
    }

    .logo-subtitle {
        letter-spacing: 0.12em;
    }
}