/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--bg-primary);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
    backdrop-filter: blur(10px);
}

.site-header__inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 6px 24px;
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.brand__logo {
    height: 42px;
    width: auto;
    display: block;
    object-fit: contain;
}

.nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

.nav__list {
    display: flex;
    align-items: center;
    gap: 24px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav__link {
    position: relative;
    font-size: 16px;
    color: var(--text-primary);
    text-decoration: none;
    padding: 8px 4px;
    transition: color var(--transition-base);
}

.nav__link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 2px;
    width: 100%;
    height: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 200ms ease;
}

.nav__link:hover,
.nav__link:focus-visible {
    color: var(--accent);
}

.nav__link:hover::after,
.nav__link:focus-visible::after {
    transform: scaleX(1);
}

.nav__cta {
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 15px;
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: transform var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base), color var(--transition-base);
    box-shadow: var(--shadow-soft);
}

.btn--primary {
    background: var(--accent);
    color: #ffffff;
}

.btn--primary:hover,
.btn--primary:focus-visible {
    background: #b5241a;
    transform: translateY(-1px);
    box-shadow: 0 14px 30px rgba(213, 43, 30, 0.22);
}

.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid rgba(0, 0, 0, 0.05);
    background: #ffffff;
    align-items: center;
    justify-content: center;
    gap: 4px;
    flex-direction: column;
    padding: 10px;
    cursor: pointer;
    transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.nav-toggle:focus-visible,
.nav-toggle:hover {
    box-shadow: var(--shadow-soft);
    transform: translateY(-1px);
}

.nav-toggle__line {
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 4px;
    transition: transform 200ms ease, opacity 200ms ease;
}

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

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

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