/* ============================================
   taikhoan.io.vn — V3 Navigation (Light Theme)
   Clean, modern, Google-inspired design
   ============================================ */

/* ── SKIP LINK (a11y) ───────────────────── */
.tk-skip-link {
    position: absolute;
    top: -100%;
    left: 16px;
    z-index: 100001;
    padding: 8px 20px;
    background: #1A1A1A;
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    border-radius: 0 0 8px 8px;
    text-decoration: none;
    transition: top 0.2s;
}

.tk-skip-link:focus {
    top: 0;
}

/* ── NAV BAR ─────────────────────────────── */
.tk-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    z-index: 10000;
    background: rgba(255, 255, 255, 0.80);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease, backdrop-filter 0.3s ease, -webkit-backdrop-filter 0.3s ease;
    font-family: 'Inter', 'Google Sans', -apple-system, BlinkMacSystemFont, sans-serif;
}

.tk-nav--scrolled {
    background: #fff;
    border-bottom-color: rgba(0, 0, 0, 0.08);
    box-shadow: 0 1px 8px rgba(0, 0, 0, 0.08);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
}

.tk-nav--hidden {
    transform: translateY(-100%);
    pointer-events: none;
}

.tk-nav--visible {
    transform: translateY(0);
    pointer-events: auto;
}

.tk-nav__container {
    max-width: calc(var(--breakpoint-max, 1600px) + var(--page-margin, 72px) * 2);
    margin: 0 auto;
    padding: 0 var(--page-margin, 72px);
    height: 100%;
    display: flex;
    align-items: center;
    gap: 32px;
    box-sizing: border-box;
}

/* ── LOGO ────────────────────────────────── */
.tk-nav__logo {
    display: flex;
    align-items: center;
    z-index: 10;
    flex-shrink: 0;
    text-decoration: none;
    margin-right: 8px;
}

.tk-nav__logo img {
    height: 30px;
    width: auto;
    transition: opacity 0.2s;
}

.tk-nav__logo:hover img {
    opacity: 0.7;
}

/* ── NAV LINKS ───────────────────────────── */
.tk-nav__links {
    display: none;
    align-items: center;
    gap: 2px;
    flex: 1;
}

@media (min-width: 768px) {
    .tk-nav__links {
        display: flex;
    }
}

.tk-nav__item {
    position: relative;
}

.tk-nav__link {
    font-size: 14px;
    font-weight: 500;
    color: #3c4043;
    padding: 8px 14px;
    border-radius: 24px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    position: relative;
    background: none;
    border: none;
    font-family: inherit;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s ease;
    line-height: 1.5;
    white-space: nowrap;
    letter-spacing: -0.1px;
}

.tk-nav__link:hover {
    color: #202124;
    background: rgba(60, 64, 67, 0.06);
}

.tk-nav__link--dropdown svg,
.tk-nav__link--dropdown .tk-nav__chevron {
    width: 14px;
    height: 14px;
    margin-left: 2px;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0.5;
    flex-shrink: 0;
}

.tk-nav__link--dropdown:hover svg,
.tk-nav__link--dropdown:hover .tk-nav__chevron {
    opacity: 0.8;
}

.tk-nav__link--dropdown[aria-expanded="true"] {
    color: #202124;
}

.tk-nav__link--dropdown[aria-expanded="true"] svg,
.tk-nav__link--dropdown[aria-expanded="true"] .tk-nav__chevron {
    transform: rotate(180deg);
    opacity: 0.8;
}

/* ── NAV ACTIONS ─────────────────────────── */
.tk-nav__actions {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: auto;
}

.tk-nav__icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    color: #5f6368;
    background: none;
    border: none;
    font-family: inherit;
    cursor: pointer;
    position: relative;
    text-decoration: none;
    transition: all 0.2s ease;
}

.tk-nav__icon-btn:hover {
    color: #202124;
    background: rgba(60, 64, 67, 0.08);
}

.tk-nav__icon-btn svg {
    width: 18px;
    height: 18px;
}

/* Account Button — styled as pill */
.tk-nav__account-btn {
    width: auto;
    height: 36px;
    padding: 0 16px;
    gap: 7px;
    border-radius: 18px;
    display: none;
    background: #1A1A1A;
    color: #fff !important;
    font-weight: 500;
    transition: all 0.2s ease;
}

.tk-nav__account-btn:hover {
    background: #333 !important;
    color: #fff !important;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.tk-nav__account-btn svg {
    color: #fff;
    stroke: #fff;
    width: 16px;
    height: 16px;
}

@media (min-width: 768px) {
    .tk-nav__account-btn {
        display: flex;
    }
}

.tk-nav__account-text {
    font-size: 13px;
    font-weight: 500;
    color: #fff;
}

/* Auth avatar (replaces pill when logged in) */
.tk-nav__avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(155, 106, 255, 0.1);
    color: #9B6AFF;
    font-size: 11px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    letter-spacing: 0.5px;
}

.tk-nav__avatar--admin {
    background: #111;
    color: #fff;
    box-shadow: 0 0 0 2px rgba(155, 106, 255, 0.3);
}

/* Cart Badge — hidden when 0 */
.tk-nav__cart-badge {
    position: absolute;
    top: 2px;
    right: 2px;
    min-width: 16px;
    height: 16px;
    background: #ea4335;
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    line-height: 1;
    padding: 0 3px;
    transition: transform 0.2s ease;
}

.tk-nav__cart-badge[data-count="0"],
.tk-nav__cart-badge:empty {
    display: none;
}

/* Separator between links and actions */
.tk-nav__separator {
    width: 1px;
    height: 20px;
    background: rgba(0, 0, 0, 0.08);
    margin: 0 4px;
    display: none;
}

@media (min-width: 768px) {
    .tk-nav__separator {
        display: block;
    }
}

/* ── MOBILE TOGGLE ───────────────────────── */
.tk-nav__mobile-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    z-index: 10;
    background: none;
    border: none;
    cursor: pointer;
    width: 36px;
    height: 36px;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background 0.2s;
}

.tk-nav__mobile-toggle:hover {
    background: rgba(60, 64, 67, 0.08);
}

.tk-nav__mobile-toggle span {
    width: 18px;
    height: 2px;
    background: #3c4043;
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: block;
}

.tk-nav__mobile-toggle--active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.tk-nav__mobile-toggle--active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.tk-nav__mobile-toggle--active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

@media (min-width: 768px) {
    .tk-nav__mobile-toggle {
        display: none;
    }
}

/* ── MEGA MENU → COMPACT DROPDOWN CARD ── */
.tk-mega {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(-6px);
    width: 340px;
    background: #fff;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 14px;
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1), 0 2px 8px rgba(0, 0, 0, 0.04);
    z-index: 9998;
    transition: opacity 0.2s ease, visibility 0.2s, transform 0.25s cubic-bezier(0.23, 1, 0.32, 1);
}

/* Pointer triangle */
.tk-mega::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 50%;
    width: 12px;
    height: 12px;
    background: #fff;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-right: none;
    border-bottom: none;
    border-radius: 2px 0 0 0;
    transform: translateX(-50%) rotate(45deg);
}

/* Backdrop — subtle on hover */
.tk-mega-backdrop {
    position: fixed;
    inset: 0;
    top: 64px;
    background: transparent;
    z-index: 9997;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.tk-mega-backdrop--open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

/* Open state */
.tk-mega--open {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
    pointer-events: auto;
}

/* Category grid — 2 columns */
.tk-mega__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2px;
}

/* Category item */
.tk-mega__cat {
    display: flex;
    align-items: center;
    padding: 10px 14px;
    border-radius: 10px;
    transition: background 0.15s ease;
    text-decoration: none;
    color: inherit;
    cursor: pointer;
    position: relative;
    white-space: nowrap;
}

.tk-mega__cat::after {
    display: none;
}

.tk-mega__cat:hover {
    background: #f3f4f6;
    text-decoration: none;
}

/* Icon — hidden */
.tk-mega__icon {
    display: none;
}

/* Title */
.tk-mega__cat-title {
    font-family: 'Inter', 'Google Sans', sans-serif;
    font-size: 13px;
    font-weight: 450;
    color: #374151;
    letter-spacing: 0;
    line-height: 1;
    transition: color 0.15s, font-weight 0.15s;
}

.tk-mega__cat:hover .tk-mega__cat-title {
    color: #111;
    font-weight: 600;
}

/* "Tất cả sản phẩm" — full-width bottom item */
.tk-mega__cat:last-child {
    grid-column: 1 / -1;
    border-top: 1px solid #f0f0f5;
    border-radius: 0 0 10px 10px;
    margin-top: 4px;
    padding-top: 12px;
    justify-content: center;
}

.tk-mega__cat:last-child .tk-mega__cat-title {
    font-weight: 500;
    color: #6b7280;
    font-size: 12px;
}

.tk-mega__cat:last-child:hover .tk-mega__cat-title {
    color: #111;
}

/* Count — hidden */
.tk-mega__cat-count {
    display: none;
}

/* Arrow — hidden */
.tk-mega__cat-arrow {
    display: none;
}

/* Stagger animation for items */
.tk-mega--open .tk-mega__cat {
    animation: none;
}

/* ── Dropdown chevron — VISIBLE (default styles apply) ── */

/* ── ALL PRODUCTS LINK — hidden in favor of grid item ── */
.tk-mega__all {
    display: none;
}

.tk-mega__all-link {
    display: none;
}

.tk-mega--open .tk-mega__all {
    display: none;
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
    .tk-mega {
        position: fixed;
        top: 64px;
        left: 8px;
        right: 8px;
        width: auto;
        transform: translateY(-6px);
        border-radius: 16px;
    }

    .tk-mega--open {
        transform: translateY(0);
    }

    .tk-mega::before {
        display: none;
    }

    .tk-mega__grid {
        grid-template-columns: 1fr 1fr;
    }

    .tk-mega__cat {
        padding: 12px 14px;
    }

    .tk-mega__cat-title {
        font-size: 13px;
    }
}

@media (max-width: 768px) {
    .tk-mega__all {
        display: none;
    }
}

/* Legacy classes — keep for compat */
.tk-mega__inner {
    display: none;
}

.tk-mega__divider {
    display: none;
}

/* ── SEARCH OVERLAY ──────────────────────── */
.tk-search-overlay {
    position: fixed;
    inset: 0;
    z-index: 100000;
    background: rgba(32, 33, 36, 0.4);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 100px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
}

.tk-search-overlay--open {
    opacity: 1;
    visibility: visible;
}

.tk-search-overlay__inner {
    width: 100%;
    max-width: 560px;
    padding: 0 24px;
    transform: translateY(12px);
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    box-sizing: border-box;
}

.tk-search-overlay--open .tk-search-overlay__inner {
    transform: translateY(0);
}

.tk-search-overlay__bar {
    display: flex;
    align-items: center;
    gap: 12px;
    background: #fff;
    border: none;
    border-radius: 24px;
    padding: 12px 20px;
    color: #5f6368;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(0, 0, 0, 0.04);
}

.tk-search-overlay__bar svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    color: #9aa0a6;
}

.tk-search-overlay__input {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    color: #202124;
    font-size: 16px;
    font-family: inherit;
}

.tk-search-overlay__input::placeholder {
    color: #9aa0a6;
}

.tk-search-overlay__close {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: #80868b;
    background: none;
    border: none;
    font-size: 18px;
    cursor: pointer;
    transition: all 0.15s;
    line-height: 1;
}

.tk-search-overlay__close:hover {
    color: #202124;
    background: #f1f3f4;
}

.tk-search-overlay__suggestions {
    margin-top: 16px;
    padding: 0 4px;
}

.tk-search-overlay__label {
    font-size: 12px;
    font-weight: 600;
    color: #80868b;
    margin-bottom: 10px;
    letter-spacing: 0.3px;
}

.tk-search-overlay__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tk-search-overlay__tag {
    padding: 6px 14px;
    background: #fff;
    border: 1px solid rgba(0, 0, 0, 0.12);
    border-radius: 18px;
    font-size: 13px;
    color: #3c4043;
    text-decoration: none;
    transition: all 0.15s;
}

.tk-search-overlay__tag:hover {
    background: #f1f3f4;
    border-color: rgba(0, 0, 0, 0.2);
    color: #202124;
}

/* ── MOBILE MENU ─────────────────────────── */
.tk-mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.tk-mobile-menu--open {
    opacity: 1;
    visibility: visible;
}

.tk-mobile-menu__content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
    width: 100%;
    max-width: 300px;
    padding: 0 24px;
    transform: translateY(16px);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-sizing: border-box;
}

.tk-mobile-menu--open .tk-mobile-menu__content {
    transform: translateY(0);
}

.tk-mobile-menu__item {
    font-family: 'Google Sans', 'Inter', sans-serif;
    font-size: 20px;
    font-weight: 500;
    color: #202124;
    padding: 14px 0;
    width: 100%;
    text-align: center;
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    text-decoration: none;
    transition: color 0.15s;
}

.tk-mobile-menu__item:hover {
    color: #1A1A1A;
}

.tk-mobile-menu__dropdown-trigger svg {
    transition: transform 0.3s ease;
    opacity: 0.5;
}

.tk-mobile-menu__dropdown-trigger--open svg {
    transform: rotate(180deg);
}

.tk-mobile-menu__sub {
    width: 100%;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.tk-mobile-menu__sub--open {
    max-height: 400px;
}

.tk-mobile-menu__sub-heading {
    font-size: 11px;
    font-weight: 600;
    color: #80868b;
    text-align: center;
    padding: 8px 0 4px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.tk-mobile-menu__sub-link {
    display: block;
    text-align: center;
    font-size: 15px;
    color: #3c4043;
    padding: 10px 0;
    text-decoration: none;
    transition: color 0.15s;
}

.tk-mobile-menu__sub-link:hover {
    color: #1A1A1A;
}

.tk-mobile-menu__sub-all {
    color: #1A1A1A;
    font-weight: 500;
    margin-top: 4px;
}

.tk-mobile-menu__divider {
    width: 40px;
    height: 1px;
    background: rgba(0, 0, 0, 0.08);
    margin: 12px auto;
}

@media (min-width: 768px) {
    .tk-mobile-menu {
        display: none !important;
    }
}

/* ── CONTACT MODAL ───────────────────────── */
.tk-contact {
    position: fixed;
    inset: 0;
    z-index: 200000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s ease;
}

.tk-contact--open {
    opacity: 1;
    visibility: visible;
}

.tk-contact__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(32, 33, 36, 0.45);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.tk-contact__panel {
    position: relative;
    background: #fff;
    border-radius: 20px;
    width: 90%;
    max-width: 380px;
    padding: 32px 28px 24px;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.15);
    transform: translateY(16px) scale(0.97);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.tk-contact--open .tk-contact__panel {
    transform: translateY(0) scale(1);
}

.tk-contact__close {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    background: #f1f3f4;
    color: #5f6368;
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
    line-height: 1;
}

.tk-contact__close:hover {
    background: #e8eaed;
    color: #202124;
}

/* Header */
.tk-contact__header {
    text-align: center;
    margin-bottom: 24px;
}

.tk-contact__avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, #1A1A1A, #4A4A4A);
    color: #fff;
    font-size: 20px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    font-family: 'Google Sans', 'Inter', sans-serif;
}

.tk-contact__name {
    font-family: 'Google Sans', 'Inter', sans-serif;
    font-size: 18px;
    font-weight: 600;
    color: #202124;
    margin: 0 0 4px;
}

.tk-contact__tagline {
    font-size: 13px;
    color: #80868b;
    margin: 0;
}

/* Channel Cards */
.tk-contact__channels {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.tk-contact__card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.2s ease;
    border: 1px solid rgba(0, 0, 0, 0.06);
    background: #fff;
}

.tk-contact__card:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border-color: rgba(0, 0, 0, 0.1);
}

.tk-contact__card-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* Zalo */
.tk-contact__card--zalo .tk-contact__card-icon {
    background: #e8f0fe;
    color: #0068ff;
}

/* Facebook */
.tk-contact__card--fb .tk-contact__card-icon {
    background: #e7f0ff;
    color: #1877f2;
}

/* Telegram */
.tk-contact__card--tele .tk-contact__card-icon {
    background: #e6f4fb;
    color: #0088cc;
}

/* Phone */
.tk-contact__card--phone .tk-contact__card-icon {
    background: #e6f4ea;
    color: #34a853;
}

.tk-contact__card-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.tk-contact__card-label {
    font-size: 11px;
    font-weight: 600;
    color: #80868b;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tk-contact__card-value {
    font-size: 14px;
    font-weight: 500;
    color: #202124;
}

.tk-contact__card-arrow {
    color: #bdc1c6;
    font-size: 16px;
    transition: all 0.15s;
}

.tk-contact__card:hover .tk-contact__card-arrow {
    color: #5f6368;
    transform: translateX(2px);
}

/* Footer */
.tk-contact__footer-text {
    text-align: center;
    font-size: 12px;
    color: #80868b;
    margin: 16px 0 0;
    padding-top: 16px;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
}

/* ── AUTH DROPDOWN ───────────────────────── */
.tk-auth-dropdown {
    position: relative;
    display: none;
}

@media (min-width: 768px) {
    .tk-auth-dropdown {
        display: block;
    }
}

.tk-auth-dropdown__trigger {
    width: auto;
    height: 36px;
    padding: 0 16px;
    gap: 7px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    background: #1A1A1A;
    color: #fff;
    font-weight: 500;
    font-size: 13px;
    font-family: 'Inter', 'Google Sans', sans-serif;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s ease;
}

.tk-auth-dropdown__trigger:hover {
    background: #333;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.tk-auth-dropdown__trigger svg {
    width: 16px;
    height: 16px;
    color: #fff;
    stroke: #fff;
}

.tk-auth-dropdown__panel {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    width: 260px;
    background: #fff;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 16px;
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1), 0 2px 8px rgba(0, 0, 0, 0.04);
    z-index: 9998;
    transition: opacity 0.2s ease, visibility 0.2s, transform 0.25s cubic-bezier(0.23, 1, 0.32, 1);
}

/* Triangle pointer */
.tk-auth-dropdown__panel::before {
    content: '';
    position: absolute;
    top: -6px;
    right: 20px;
    width: 12px;
    height: 12px;
    background: #fff;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-right: none;
    border-bottom: none;
    border-radius: 2px 0 0 0;
    transform: rotate(45deg);
}

.tk-auth-dropdown__panel--open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
}

/* Auth option links */
.tk-auth-dropdown__item {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 12px 14px;
    border-radius: 12px;
    font-family: 'Inter', 'Google Sans', sans-serif;
    font-size: 14px;
    font-weight: 500;
    color: #374151;
    text-decoration: none;
    background: none;
    border: none;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
    box-sizing: border-box;
}

.tk-auth-dropdown__item:hover {
    background: #f3f4f6;
    color: #111;
    text-decoration: none;
}

.tk-auth-dropdown__item-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.tk-auth-dropdown__item-icon--login {
    background: #111;
    color: #fff;
}

.tk-auth-dropdown__item-icon--register {
    background: #f3f4f6;
    color: #374151;
}

.tk-auth-dropdown__item-icon svg {
    width: 16px;
    height: 16px;
}

.tk-auth-dropdown__item-text {
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.tk-auth-dropdown__item-label {
    font-size: 14px;
    font-weight: 600;
    color: #111827;
    line-height: 1.3;
}

.tk-auth-dropdown__item-desc {
    font-size: 12px;
    font-weight: 400;
    color: #9ca3af;
    line-height: 1.3;
}

.tk-auth-dropdown__divider {
    height: 1px;
    background: #f0f0f5;
    margin: 4px 8px;
}

.tk-auth-dropdown__item--zalo {
    color: #6b7280;
    font-size: 13px;
}

.tk-auth-dropdown__item--zalo .tk-auth-dropdown__item-icon {
    background: #e8f4fd;
    color: #0068ff;
}

/* Backdrop for closing */
.tk-auth-backdrop {
    position: fixed;
    inset: 0;
    top: 64px;
    z-index: 9997;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.tk-auth-backdrop--open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}