/* ===================================================================
   TK Construction — Layout: header, menu, tìm kiếm, footer, CTA nổi
   Markup: Frontend/MasterPage.master (+ .cs cho logo, footer, CTA nổi)
   =================================================================== */

/* ================================================== HEADER ========= */
/* position:sticky với top ÂM bằng chiều cao thanh trên: thanh trên cuộn đi,
   thanh menu dính lại — không phải đổi chiều cao header bằng JS nên nội dung
   không bị giật khi cuộn. */
.site-header {
    position: sticky;
    top: calc(-1 * var(--topbar-h));
    z-index: 1030;
    background: var(--c-white);
}

/* ---- Thanh trên: tên công ty + điện thoại + địa chỉ ---- */
.header-topbar {
    height: var(--topbar-h);
    background: var(--g-primary);
    color: var(--c-white);
}
.header-topbar-inner {
    height: 100%;
    display: flex;
    align-items: center;
    gap: 20px;
    padding-left: 222px;   /* chừa chỗ khối logo */
}
.topbar-company {
    font-family: var(--font-base);
    font-weight: 500;
    font-size: 1rem;
    text-transform: uppercase;
    white-space: nowrap;
    padding-top: 4px;
}
.topbar-contacts {
    flex: 1 1 auto;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0;
    font-size: .8125rem;
    min-width: 0;
}
.topbar-item {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 0 12px;
    color: rgba(255, 255, 255, .92);
    white-space: nowrap;
}
.topbar-item + .topbar-item { border-left: 1px solid rgba(255, 255, 255, .35); }
.topbar-item:last-child { padding-right: 0; }
/* Địa chỉ dài thì co lại có dấu … thay vì tràn khỏi container */
.topbar-item { min-width: 0; }
a.topbar-item { flex: 0 0 auto; }
.topbar-item > span { overflow: hidden; text-overflow: ellipsis; }
.topbar-item > i { flex: 0 0 auto; }
.topbar-item b { font-weight: 600; color: var(--c-white); }
a.topbar-item:hover { color: var(--c-white); }
a.topbar-item:hover b { color: var(--c-accent-light); }

/* ---- Thanh menu ---- */
.header-navbar {
    position: relative;
    background: var(--c-white);
    box-shadow: 0 1px 0 var(--c-line-soft);
}
.header-navbar-inner {
    position: relative;
    display: flex;
    align-items: center;
    height: calc(var(--header-h) - var(--topbar-h));
    padding-left: 240px;
}

/* ---- Logo trong khối trắng cong (bg-logo.svg) phủ xuống hero ---- */
.header-brand {
    position: absolute;
    left: -62px;
    top: calc(-1 * var(--topbar-h));
    z-index: 3;
    width: 309px;
    height: 176px;
    padding: 12px 0 0 62px;
    background: url(../images/tk/bg-logo.svg) left top / 309px 176px no-repeat;
    pointer-events: none;
    transition: opacity var(--t-fast);
}
/* Màn hình rộng hơn container: kéo phần phẳng của khối trắng tới mép trái trình duyệt */
.header-brand::before {
    content: "";
    position: absolute;
    right: calc(100% - 1px);
    top: 0;
    width: 50vw;
    height: 110px;
    background: var(--c-white);
    box-shadow: 0 4px 15px rgba(134, 134, 134, .35);
    clip-path: inset(0 0 -20px 0);
}
.header-brand a { pointer-events: auto; display: inline-block; }
.navbar-brand img { width: 150px; height: auto; }

/* Khi cuộn: logo gọn nằm trong thanh menu */
.site-header.is-stuck { box-shadow: var(--shadow-sm); }
.site-header.is-stuck .header-brand {
    top: 0;
    left: 0;
    width: auto;
    height: 100%;
    padding: 0;
    background: none;
    display: flex;
    align-items: center;
}
.site-header.is-stuck .header-brand::before { display: none; }
.site-header.is-stuck .navbar-brand img { width: auto; height: 44px; }

/* ---- Menu chính ---- */
.header-nav { flex: 1 1 auto; min-width: 0; }
.main-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 4px;
    list-style: none;
    margin: 0;
    padding: 0;
}
.main-nav > .menu-item { position: relative; }
.main-nav > .menu-item > a {
    display: flex;
    align-items: center;
    gap: 6px;
    height: calc(var(--header-h) - var(--topbar-h));
    padding: 0px 10px;
    font-size: 1.0625rem;
    font-weight: 600;
    color: #595958;
    text-transform: uppercase;
    white-space: nowrap;
    position: relative;
    font-family: var(--font-base);
}
.main-nav > .menu-item > a::after {
    content: "";
    position: absolute;
    left: 10px;
    right: 10px;
    bottom: 0;
    height: 3px;
    background: var(--c-accent);
    transform: scaleX(0);
    transition: transform var(--t);
    display: none;
}
.main-nav > .menu-item > a:hover,
.main-nav > .menu-item.is-active > a { color: var(--c-accent); }
.main-nav > .menu-item.is-active > a::after,
.main-nav > .menu-item > a:hover::after { transform: scaleX(1); }
.main-nav > .has-children > a::before {
    content: "\f107";
    order: 2;
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    font-size: .7rem;
    opacity: .6;
}

/* Menu con thả xuống (desktop) */
.main-nav .submenu {
    list-style: none;
    margin: 0;
    padding: 8px 0;
    min-width: 230px;
    background: var(--c-white);
    border-top: 3px solid var(--c-accent);
    border-radius: 0 0 var(--radius) var(--radius);
    box-shadow: var(--shadow);
}
.main-nav .submenu a {
    display: block;
    padding: 9px 18px;
    font-size: .9375rem;
    color: var(--c-ink);
}
.main-nav .submenu a:hover,
.main-nav .submenu .is-active > a { color: var(--c-accent); background: var(--c-accent-soft); }

@media (min-width: 992px) {
    .main-nav .submenu {
        position: absolute;
        top: 100%;
        left: 0;
        opacity: 0;
        visibility: hidden;
        transform: translateY(8px);
        transition: opacity var(--t-fast), transform var(--t-fast), visibility var(--t-fast);
    }
    .main-nav > .has-children:hover > .submenu,
    .main-nav > .has-children:focus-within > .submenu {
        opacity: 1;
        visibility: visible;
        transform: none;
    }
    .nav-actions { display: none; }
}

/* ---- Nút công cụ: tìm kiếm, menu mobile ---- */
.header-tools { display: flex; align-items: center; gap: 4px; margin-left: 14px; }
.header-tool {
    position: relative;
    width: 40px; height: 40px;
    display: inline-flex; align-items: center; justify-content: center;
    background: transparent;
    border: 0;
    border-radius: 50%;
    color: var(--c-ink);
    font-size: 1.0625rem;
    cursor: pointer;
    transition: background var(--t-fast), color var(--t-fast);
}
.header-tool:hover,
.header-tool[aria-expanded="true"] { background: var(--c-accent-soft); color: var(--c-accent); }
.header-cart-count:not(:empty) {
    position: absolute; top: 2px; right: 0;
    min-width: 18px; height: 18px; padding: 0 5px;
    border-radius: var(--radius-pill);
    background: var(--c-accent); color: var(--c-white);
    font-size: .6875rem; font-weight: 700; line-height: 18px;
}

/* ---- Ô tìm kiếm thả xuống ---- */
.header-search {
    position: absolute;
    left: 0; right: 0; top: 100%;
    padding: 16px 0;
    background: var(--c-white);
    border-top: 1px solid var(--c-line-soft);
    box-shadow: var(--shadow);
}
.header-search .search-box { margin: 0; max-width: 720px; margin-left: auto; }

/* ---- Chuyển ngôn ngữ (chỉ hiện khi có từ 2 ngôn ngữ đang bật) ---- */
.lang-switch {
    display: inline-flex;
    margin-left: 16px;
    border: 1px solid rgba(255, 255, 255, .4);
    border-radius: var(--radius);
    overflow: hidden;
}
.lang-switch-item {
    padding: 2px 9px;
    font-size: .6875rem;
    font-weight: 700;
    color: rgba(255, 255, 255, .85);
}
.lang-switch-item + .lang-switch-item { border-left: 1px solid rgba(255, 255, 255, .4); }
.lang-switch-item:hover { color: var(--c-white); background: rgba(255, 255, 255, .15); }
.lang-switch-item.is-active { background: var(--c-accent); color: var(--c-white); }

/* ---- Offcanvas menu — CHỈ dưới 992px ----
   Trên desktop Bootstrap biến .offcanvas-lg thành khối tĩnh; rule mobile đặt ngoài
   media query là menu xếp dọc ngay trên desktop. */
@media (max-width: 991.98px) {
    .site-nav-shell { width: min(340px, 88vw) !important; background: var(--c-white); }
    .site-nav-shell .offcanvas-header { border-bottom: 1px solid var(--c-line); }
    .mobile-menu-logo img { height: 48px; width: auto; }
    .site-nav-shell .main-nav { flex-direction: column; align-items: stretch; gap: 0; }
    .site-nav-shell .main-nav > .menu-item > a {
        height: auto;
        padding: 13px 4px;
        border-bottom: 1px solid var(--c-line-soft);
        font-size: 1rem;
    }
    .site-nav-shell .main-nav > .menu-item > a::after { display: none; }
    .site-nav-shell .main-nav > .has-children > a::before { display: none; }
    .site-nav-shell .main-nav .submenu {
        min-width: 0;
        padding: 4px 0 8px 14px;
        border: 0;
        box-shadow: none;
        background: transparent;
    }
    .site-nav-shell .main-nav .submenu a { padding: 7px 4px; font-size: .9375rem; color: var(--c-muted); }
    .nav-actions { display: flex; flex-direction: column; gap: 10px; margin-top: 22px; }
    .nav-address { margin: 8px 0 0; font-size: var(--fs-small); color: var(--c-muted); }
    .nav-address i { color: var(--c-accent); margin-right: 6px; }
}

/* ================================================== FOOTER ========= */
.site-footer {
    position: relative;
    color: rgba(255, 255, 255, .9);
    background: var(--c-primary-dark) url(../images/tk/bg-chantrang.jpg) center / cover no-repeat;
}
.footer-main { padding: 44px 0 30px; }

.footer-brand { text-align: center; margin-bottom: 22px; max-width: 340px; }
.footer-logo { display: inline-block; }
.footer-logo img { width: 170px; height: auto; filter: brightness(0) invert(1); } /* logo header (màu) -> trắng trên nền tối */

.footer-desc p { font-size: var(--fs-small); color: rgba(255, 255, 255, .8); max-width: 42ch; }
.footer-desc:empty { display: none; }

.footer-contact p {
    display: flex;
    gap: 10px;
    margin: 0 0 8px;
    font-size: .9375rem;
    line-height: 1.6;
}
.footer-contact i { flex: 0 0 16px; margin-top: 5px; color: var(--c-white); }
.footer-contact a { color: var(--c-white); }
.footer-contact a:hover { color: var(--c-accent-light); }
.footer-contact b { font-weight: 600; }

.footer-title {
    font-family: var(--font-base);
    font-size: 1.1875rem;
    font-weight: 600;
    color: var(--c-white);
    margin: 10px 0 18px;
}

.footer-links { list-style: none; margin: 0; padding: 0; }
.footer-links li { margin-bottom: 7px; }
.footer-links a {
    display: inline-flex;
    align-items: baseline;
    gap: 10px;
    color: rgba(255, 255, 255, .92);
    font-size: .9375rem;
}
.footer-links a::before {
    content: "\f105";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    font-size: .75rem;
}
.footer-links a:hover { color: var(--c-accent-light); }

.footer-map {
    height: 220px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: rgba(255, 255, 255, .85);
    margin-top: 6px;
}
.footer-map iframe { display: block; width: 100%; height: 100%; border: 0; }

.site-footer .socials { display: flex; gap: 8px; margin-top: 14px; }
.site-footer .socials a {
    width: 36px; height: 36px;
    display: inline-flex; align-items: center; justify-content: center;
    border: 1px solid rgba(255, 255, 255, .5);
    border-radius: 50%;
    color: var(--c-white);
}
.site-footer .socials a:hover { background: var(--c-accent); border-color: var(--c-accent); }

.footer-bottom {
    background: var(--g-accent);
    padding: 11px 0;
    font-size: .9375rem;
    color: var(--c-white);
}
.copyright { display: flex; flex-wrap: wrap; gap: 6px 20px; }
.copyright a { color: var(--c-white); text-decoration: underline; }

/* ================================================== CTA NỔI ======== */
.float-cta {
    position: fixed;
    right: 18px;
    bottom: 22px;
    z-index: 1040;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 10px;
}
.float-cta-btn {
    position: relative;
    height: 48px;
    min-width: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: var(--radius-pill);
    background: var(--c-primary);
    color: var(--c-white);
    box-shadow: var(--shadow);
    font-weight: 600;
    font-size: var(--fs-small);
    transition: transform var(--t-fast), background var(--t-fast);
}
.float-cta-btn:hover { transform: translateY(-2px); color: var(--c-white); }
.float-cta-btn i { font-size: 1.125rem; }
.float-cta-text { display: none; }
.float-cta-top { background: var(--c-white); color: var(--c-primary); opacity: 0; pointer-events: none; }
.float-cta-top:hover { color: var(--c-accent); }
.is-scrolled .float-cta-top { opacity: 1; pointer-events: auto; }
.float-cta-quote { background: var(--g-accent); }
.float-cta-phone { background: var(--c-accent); padding: 0 18px 0 6px; }
.float-cta-phone i {
    width: 36px; height: 36px;
    display: inline-flex; align-items: center; justify-content: center;
    border-radius: 50%;
    background: var(--c-white);
    color: var(--c-accent);
    animation: ctaShake 2.4s ease-in-out infinite;
}
.float-cta-phone .float-cta-text { display: inline; font-size: 1rem; }
/* WhatsApp: màu nhận diện của bên thứ ba (#25D366), không lấy từ token */
.float-cta-whatsapp { background: #25d366; }
.float-cta-map { background: var(--c-primary); }

.float-cta-ring {
    position: absolute;
    left: 6px; top: 6px;
    width: 36px; height: 36px;
    border-radius: 50%;
    border: 2px solid var(--c-white);
    opacity: .6;
    animation: ctaRing 2.2s ease-out infinite;
}
@keyframes ctaRing {
    0%   { transform: scale(1);   opacity: .6; }
    100% { transform: scale(1.7); opacity: 0; }
}
@keyframes ctaShake {
    0%, 60%, 100% { transform: rotate(0); }
    65%, 75%, 85% { transform: rotate(-14deg); }
    70%, 80%, 90% { transform: rotate(14deg); }
}
@media (prefers-reduced-motion: reduce) {
    .float-cta-ring, .float-cta-phone i { animation: none; }
    html { scroll-behavior: auto; }
}

/* ============================================ THANH CTA DÍNH MOBILE */
.mobile-cta { display: none; }

@media (max-width: 767.98px) {
    .mobile-cta {
        position: fixed;
        left: 0; right: 0; bottom: 0;
        z-index: 1040;
        display: flex;
        background: var(--c-primary);
        box-shadow: 0 -6px 20px rgba(7, 43, 80, .25);
    }
    .mobile-cta-btn {
        flex: 1 1 0;
        white-space: nowrap;
        display: inline-flex; align-items: center; justify-content: center; gap: 8px;
        padding: 13px 6px;
        font-size: .8125rem; font-weight: 600;
        color: var(--c-white);
        border-left: 1px solid rgba(255, 255, 255, .18);
    }
    .mobile-cta-btn:first-child { border-left: 0; }
    .mobile-cta-btn:hover { color: var(--c-white); }
    .mobile-cta-call { background: var(--c-accent); }
    .mobile-cta-book { background: var(--c-primary); }
    .mobile-cta-map { background: var(--c-primary-dark); }

    body { padding-bottom: 50px; }

    /* Thanh dính đã có Gọi / Báo giá / Chỉ đường -> chỉ giữ nút lên đầu trang */
    .float-cta-btn { display: none; }
    .float-cta-top { display: inline-flex; }
    .float-cta { right: 12px; bottom: 64px; }
}