/* Header Hamburger Menu (rewritten)
   - Works with markup in index.html
   - Supports show/hide via `.hamburger-dropdown.show`
   - Locks body scroll with `body.menu-open`
   - Includes submenu toggle with `.submenu.open`
*/

/* Container for hamburger button and dropdown */
.hamburger-menu {
    position: relative;
    display: inline-block;
}

/* Button */
.hamburger-btn {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 36px;
    height: 30px;
    padding: 6px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 8px;
    cursor: pointer;
    transition: background .15s ease-out, border-color .15s ease-out, transform .1s ease-out;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    user-select: none;
    will-change: transform;
}

.hamburger-btn:hover { background: rgba(255, 255, 255, 0.14); border-color: rgba(255, 255, 255, 0.26); }
.hamburger-btn:active { transform: scale(0.98); }

.hamburger-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: background .2s ease;
}

.hamburger-btn:hover span { background: var(--accent); }

/* Fullscreen dropdown overlay */
.hamburger-dropdown {
    position: fixed;
    top: var(--header-height, 64px);
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, rgba(10,12,16,0.96), rgba(10,12,16,0.92));
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 12px 0 28px 0;
    z-index: 2200;
    overflow-y: auto;
    overflow-x: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: opacity .15s ease-out, transform .15s ease-out, visibility .15s ease-out;
    will-change: opacity, transform;
}

/* Visible state */
.hamburger-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* Prevent background scroll when open */
body.menu-open { overflow: hidden !important; }

/* Categories */
.menu-category { border-bottom: 1px solid rgba(255,255,255,0.10); padding-bottom: 8px; margin-bottom: 10px; }
.menu-category:last-child { border-bottom: none; margin-bottom: 0; }
.menu-category-title { color: #8ab4ff; font-weight: 800; padding: 14px 20px 6px 20px; font-size: 12px; letter-spacing: .4px; }

/* Items */
.menu-item {
    display: block;
    color: var(--white);
    text-decoration: none;
    padding: 14px 22px;
    font-size: 15px;
    font-weight: 600;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    transition: background .2s ease, padding-left .2s ease, color .2s ease;
    position: relative;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    user-select: none;
}

.menu-item:last-child { border-bottom: none; }
.menu-item:hover { background: rgba(255,255,255,0.06); color: var(--accent); padding-left: 26px; }

/* Submenu */
.submenu { margin: 6px 0 10px 0; }
.submenu-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 12px 18px;
    color: var(--text-1);
    font-size: 14px;
    font-weight: 800;
    background: rgba(255,255,255,0.05);
    border-top: 1px dashed rgba(255,255,255,0.14);
    border-bottom: 1px dashed rgba(255,255,255,0.08);
    cursor: pointer;
}

.submenu-title .chev { transition: transform .2s ease; opacity: .85; }
.submenu.open .submenu-title .chev { transform: rotate(90deg); }

.submenu-list {
    max-height: 0;
    overflow: hidden;
    transition: max-height .2s ease-out;
    background: rgba(255,255,255,0.03);
    will-change: max-height;
}

.submenu.open .submenu-list { max-height: 420px; }
.submenu-list .menu-item { padding-left: 32px; }

/* Small screens */
@media (max-width: 768px) {
    .hamburger-dropdown { top: var(--header-height-mobile, 56px); }
}

@media (max-width: 480px) {
    .menu-category { padding-bottom: 6px; margin-bottom: 6px; }
    .menu-category-title { padding: 10px 16px 6px 16px; font-size: 11px; }
    .menu-item { padding: 12px 16px; font-size: 14px; }
    .submenu-title { padding: 10px 14px; font-size: 13px; }
    .submenu-list .menu-item { padding-left: 28px; }
    .hamburger-btn { width: 22px; height: 22px; padding: 3px; border-radius: 8px; min-width: 40px; min-height: 40px; }
}