/* ================= HEADER ================= */
.tkp-header {
    background-color: var(--tkp-color-white);
    border-bottom: 1px solid var(--tkp-color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.tkp-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.tkp-header__logo img {
    display: block;
    max-height: 48px;
    width: auto;
}

/* Menu Desktop */
.tkp-header__menu {
    display: flex;
    gap: var(--tkp-spacing-lg);
    list-style: none;
}

.tkp-header__menu-link {
    font-family: var(--tkp-font-heading);
    font-size: 16px;
    font-weight: 500;
    color: var(--tkp-color-text-main);
    text-transform: uppercase;
    text-decoration: none;
    padding: 28px 0;
    position: relative;
    transition: color var(--tkp-transition-fast);
}

.tkp-header__menu-link:hover,
.tkp-header__menu-link.is-active {
    color: var(--tkp-color-primary);
}

.tkp-header__menu-link.is-active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--tkp-color-primary);
}

/* Header Actions */
.tkp-header__actions {
    display: flex;
    align-items: center;
    gap: var(--tkp-spacing-lg);
}

.tkp-header__search-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--tkp-color-text-main);
    display: flex;
}

.tkp-header__hotline {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--tkp-font-heading);
    font-size: 18px;
    font-weight: 600;
    color: var(--tkp-color-text-main);
    text-decoration: none;
}

.tkp-header__toggle {
    display: none; /* Ẩn trên desktop */
    background: none;
    border: none;
    width: 32px;
    height: 24px;
    position: relative;
    cursor: pointer;
    z-index: 101;
}

.tkp-header__toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--tkp-color-text-main);
    position: absolute;
    left: 0;
    transition: var(--tkp-transition);
}

.tkp-header__toggle span:nth-child(1) { top: 0; }
.tkp-header__toggle span:nth-child(2) { top: 11px; }
.tkp-header__toggle span:nth-child(3) { bottom: 0; }

/* Trạng thái mở menu mobile */
.tkp-header__toggle.is-active span:nth-child(1) {
    transform: rotate(45deg);
    top: 11px;
}
.tkp-header__toggle.is-active span:nth-child(2) {
    opacity: 0;
}
.tkp-header__toggle.is-active span:nth-child(3) {
    transform: rotate(-45deg);
    bottom: 11px;
}

/* ================= FOOTER ================= */
.tkp-footer {
    background-color: var(--tkp-color-bg-dark);
    color: var(--tkp-color-white);
    border-top: 4px solid var(--tkp-color-primary);
    padding-top: var(--tkp-spacing-xxl);
}

.tkp-footer__top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 2fr;
    gap: var(--tkp-spacing-xl);
    padding-bottom: var(--tkp-spacing-xxl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.tkp-footer__logo {
    margin-bottom: var(--tkp-spacing-md);
}

.tkp-footer__desc {
    font-family: var(--tkp-font-body);
    font-size: 14px;
    line-height: 1.6;
    color: #A0A4A8;
}

.tkp-footer__title {
    font-family: var(--tkp-font-heading);
    font-size: 16px;
    font-weight: 500;
    margin-bottom: var(--tkp-spacing-lg);
    text-transform: uppercase;
}

.tkp-footer__list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding-left: 0px;
}

.tkp-footer__list a {
    color: #A0A4A8;
    text-decoration: none;
    font-size: 14px;
    transition: color var(--tkp-transition-fast);
}

.tkp-footer__list a:hover {
    color: var(--tkp-color-white);
}

.tkp-footer__col--contact .tkp-footer__list li {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    color: #A0A4A8;
    font-size: 14px;
    line-height: 1.5;
}

.tkp-footer__col--contact svg {
    flex-shrink: 0;
    margin-top: 2px;
}

.tkp-footer__bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--tkp-spacing-lg) 0;
    font-size: 13px;
    color: #A0A4A8;
}

.tkp-footer__legal a {
    color: #A0A4A8;
    text-decoration: none;
    margin: 0 8px;
}

.tkp-footer__legal a:hover {
    color: var(--tkp-color-white);
}

/* ================= RESPONSIVE LAYOUT ================= */
@media (max-width: 1199px) {
    .tkp-header__menu { gap: 16px; }
    .tkp-header__actions { gap: 16px; }
    .tkp-header__hotline { display: none; } /* Ẩn hotline trên tablet để đỡ chật */
    
    .tkp-footer__top {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 767px) {
    .tkp-header__cta { display: none; }
    .tkp-header__toggle { display: block; }
    
    .tkp-header__nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background-color: var(--tkp-color-white);
        box-shadow: -4px 0 12px rgba(0,0,0,0.1);
        transition: right var(--tkp-transition);
        padding: 80px 24px 24px;
        z-index: 100;
        overflow-y: auto;
    }
    
    .tkp-header__nav.is-open {
        right: 0;
    }

    .tkp-header__menu {
        flex-direction: column;
        gap: 0;
    }

    .tkp-header__menu-link {
        display: block;
        padding: 16px 0;
        border-bottom: 1px solid var(--tkp-color-border);
    }
    
    .tkp-header__menu-link.is-active::after {
        display: none;
    }
    
    .tkp-header__menu-link.is-active {
        color: var(--tkp-color-primary);
        font-weight: 600;
    }

    .tkp-footer__top {
        grid-template-columns: 1fr;
    }

    .tkp-footer__bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}