/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 4px;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    z-index: 1002;
    width: 32px;
    height: 32px;
}

.mobile-menu-btn span {
    display: block;
    width: 20px;
    height: 1.5px;
    background: var(--text-color);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    transform-origin: center;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    margin: 0;
    transform: translateZ(0);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
}

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

.mobile-menu-btn.active span:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile Drawer */
.mobile-drawer {
    display: none;
    position: fixed;
    top: 50px;
    left: 0;
    width: 100%;
    height: calc(100vh - 50px);
    background: var(--nav-bg);
    z-index: 997;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 24px 20px 100px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: opacity 0.25s cubic-bezier(0.16, 1, 0.3, 1),
                visibility 0.25s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.25s cubic-bezier(0.16, 1, 0.3, 1),
                background-color 0.3s;
}

.mobile-drawer.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.mobile-drawer .mobile-nav-item {
    display: block;
    color: var(--text-color);
    font-size: 22px;
    font-weight: 500;
    padding: 14px 0;
    border-bottom: 1px solid var(--border-light);
    text-decoration: none;
    cursor: pointer;
    letter-spacing: -0.01em;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease, color 0.2s;
}

.mobile-drawer.active .mobile-nav-item {
    opacity: 1;
    transform: translateY(0);
}

.mobile-drawer.active:hover .mobile-nav-item {
    opacity: 0.5;
    color: var(--secondary-text);
}

.mobile-drawer.active .mobile-nav-item:hover {
    opacity: 1;
    color: var(--text-color);
}

.mobile-drawer .mobile-nav-item[data-expandable]::after {
    content: '';
    display: inline-block;
    width: 7px;
    height: 7px;
    border-right: 1.5px solid var(--secondary-text);
    border-bottom: 1.5px solid var(--secondary-text);
    transform: rotate(45deg) translateY(-2px);
    margin-left: 10px;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-drawer .mobile-nav-item[data-expandable].expanded::after {
    transform: rotate(-135deg) translateY(-2px);
}

.mobile-drawer .mobile-nav-item:last-child {
    border-bottom: none;
}

.mobile-drawer .mobile-submenu {
    max-height: 0;
    overflow: hidden;
    padding: 0;
    transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1),
                padding 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-drawer .mobile-submenu.open {
    max-height: 400px;
    padding: 8px 0 16px 0;
}

.mobile-drawer .mobile-submenu a {
    display: block;
    color: var(--secondary-text);
    font-size: 15px;
    font-weight: 400;
    padding: 8px 0;
    text-decoration: none;
    opacity: 0;
    transform: translateX(-8px);
    transition: color 0.2s, opacity 0.25s ease, transform 0.25s ease;
}

.mobile-drawer .mobile-submenu.open a {
    opacity: 1;
    transform: translateX(0);
}

.mobile-drawer .mobile-submenu a:hover {
    color: var(--text-color);
}

.mobile-drawer .mobile-actions {
    margin-top: 32px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.mobile-drawer.active .mobile-actions {
    opacity: 1;
    transform: translateY(0);
}

.mobile-drawer .mobile-actions a {
    display: block;
    text-align: center;
    padding: 12px 24px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
}

.mobile-drawer .mobile-actions .mobile-login {
    color: var(--text-color);
    border: 1px solid var(--border-light);
}

.mobile-drawer .mobile-actions .mobile-login:hover {
    background: var(--text-color);
    color: var(--bg-color);
    border-color: var(--text-color);
}

.mobile-drawer .mobile-actions .mobile-cta {
    background: var(--text-color);
    color: var(--bg-color);
}

.mobile-drawer .mobile-actions .mobile-cta:hover {
    background: var(--bg-color);
    color: var(--text-color);
    box-shadow: 0 0 0 1px var(--text-color);
}

@media (max-width: 910px), (max-height: 860px) {
    .mobile-menu-btn { display: flex; }
    .mobile-drawer { display: block; }
}