.glass-nav {
    background: #ffffff;
    box-shadow: 0 12px 30px rgba(13, 21, 35, 0.08);
}

.nav-link { position: relative; }
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px; left: 0;
    width: 0; height: 2px;
    background: #c1272d;
    transition: width 0.3s ease;
}
.nav-link:hover::after { width: 100%; }

.mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background: #ffffff;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-16px);
    transition: opacity 0.25s ease, transform 0.25s ease;
}

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

.mobile-menu-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 54px;
    border-bottom: 1px solid rgba(13, 21, 35, 0.08);
    color: #1f2937;
    font-size: 1.5rem;
    font-weight: 700;
    opacity: 0;
    transform: translateY(12px);
    transition: color 0.2s ease, padding-left 0.2s ease, opacity 0.25s ease, transform 0.25s ease;
}

.mobile-menu-link:hover {
    color: #c1272d;
    padding-left: 0.25rem;
}

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

.mobile-menu.is-open .mobile-menu-link:nth-child(1) { transition-delay: 0.05s; }
.mobile-menu.is-open .mobile-menu-link:nth-child(2) { transition-delay: 0.1s; }
.mobile-menu.is-open .mobile-menu-link:nth-child(3) { transition-delay: 0.15s; }
.mobile-menu.is-open .mobile-menu-link:nth-child(4) { transition-delay: 0.2s; }
.mobile-menu.is-open .mobile-menu-link:nth-child(5) { transition-delay: 0.25s; }

.mobile-menu-cta {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.25s ease, transform 0.25s ease, background-color 0.2s ease, color 0.2s ease;
}

.mobile-menu.is-open .mobile-menu-cta {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.25s;
}

#mobile-menu-button {
    position: fixed;
    top: 23px;
    right: 20px;
    z-index: 60;
    width: 34px;
    height: 34px;
    padding: 0;
    color: #0d1523;
    background: transparent;
    border: 0;
    border-radius: 0;
    cursor: pointer;
}

#mobile-menu-button[aria-expanded="true"] {
    color: #c1272d;
}

.burger-line {
    display: block;
    position: absolute;
    left: 3px;
    width: 28px;
    height: 2px;
    background: currentColor;
    border-radius: 0;
    transform-origin: center;
    transition: transform 0.25s ease, opacity 0.2s ease;
}

.burger-line:nth-child(1) { top: 8px; }
.burger-line:nth-child(2) { top: 16px; }
.burger-line:nth-child(3) { top: 24px; }

#mobile-menu-button[aria-expanded="true"] .burger-line:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

#mobile-menu-button[aria-expanded="true"] .burger-line:nth-child(2) {
    opacity: 0;
}

#mobile-menu-button[aria-expanded="true"] .burger-line:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}