/* =====================================================================
   KHUNG TRANG – thanh đầu trang, tấm biển hiệu, chân trang, nút nổi
   Dùng chung cho cả website (chung/khung-trang.js).
   ===================================================================== */

/* ---------- Header ---------- */
.header {
  position: fixed; inset: 0 0 auto; z-index: 100; height: var(--header-h);
  background: #fff; border-bottom: 1px solid transparent; transition: border-color 0.2s;
}
.header.is-scrolled { border-color: var(--ke); }
.header__inner { height: 100%; display: flex; align-items: center; gap: 20px; }

.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.logo__mark { width: 42px; height: 42px; flex-shrink: 0; }
.logo__mark img, .logo__mark svg { width: 100%; height: 100%; object-fit: contain; }
.logo__mark--img { width: auto; height: 50px; }
.logo__mark--img img { width: auto; height: 100%; }
.logo--light .logo__mark--img { height: 64px; padding: 6px 10px; background: #fff; border-radius: 6px; }
.logo__text { display: flex; flex-direction: column; line-height: 1; }
.logo__name { font-family: var(--font-sign); font-weight: 800; font-size: 26px; color: var(--muc); }
.logo__small { font-size: 12px; line-height: 1.3; color: var(--xam); margin-top: 8px; } /* chừa chỗ cho dấu nặng dưới chữ "Lộc" */
.logo--light .logo__name { color: var(--vang); }
.logo--light .logo__small { color: rgba(241, 239, 230, 0.7); }

.nav { margin-left: auto; }
.nav__list { display: flex; gap: 2px; }
.nav__link { display: block; padding: 8px 12px; font-size: 15px; font-weight: 500; text-decoration: none; color: var(--muc); }
.nav__link:hover { color: var(--do); }
.nav__link.is-active { color: var(--do); box-shadow: inset 0 -2px 0 var(--do); }
.nav__cta-mobile { display: none; }
.nav-toggle { display: none; width: 44px; height: 44px; border-radius: 6px; border: 1px solid var(--ke); background: #fff; align-items: center; justify-content: center; }
.nav-toggle .icon { width: 22px; height: 22px; }

@media (max-width: 1000px) {
  .nav-toggle { display: inline-flex; margin-left: auto; }
  .header__hotline { display: none; }
  .nav {
    position: fixed; top: var(--header-h); left: 0; right: 0; background: #fff;
    padding: 8px 16px 20px; border-bottom: 1px solid var(--ke);
    box-shadow: 0 20px 30px -20px rgba(0, 0, 0, 0.25);
    display: none;
  }
  .nav.is-open { display: block; }
  .nav__list { flex-direction: column; }
  .nav__link { padding: 14px 4px; border-bottom: 1px solid var(--ke); font-size: 16px; }
  .nav__link.is-active { box-shadow: none; }
  .nav__cta-mobile { display: flex; margin-top: 16px; }
}

/* ---------- Đầu trang: tấm biển hiệu ---------- */
.hero { padding: calc(var(--header-h) + 24px) 0 72px; }

.sign {
  position: relative; text-align: center; color: var(--vang);
  background: var(--do); border-radius: 4px;
  padding: 26px 48px 22px;
  box-shadow: 0 3px 0 var(--do-dam), 0 24px 30px -24px rgba(110, 15, 20, 0.7);
}
.sign__bolt { position: absolute; width: 9px; height: 9px; border-radius: 50%; background: radial-gradient(circle at 35% 35%, #f3f3f3, #9a9a9a); }
.sign__bolt--tl { top: 10px; left: 12px; }
.sign__bolt--tr { top: 10px; right: 12px; }
.sign__bolt--bl { bottom: 10px; left: 12px; }
.sign__bolt--br { bottom: 10px; right: 12px; }
.sign__top { font-family: var(--font-sign); font-weight: 700; font-size: 22px; letter-spacing: 0.06em; text-transform: uppercase; margin: 0; }
.sign__name {
  font-family: var(--font-sign); font-weight: 800; text-transform: uppercase;
  font-size: clamp(34px, 6.4vw, 78px); line-height: 0.98; letter-spacing: 0.01em;
  margin: 6px 0 20px; color: var(--vang);
}
.sign__pre { display: block; font-size: 0.55em; letter-spacing: 0.03em; }
.sign__brand { display: block; font-size: 1.3em; line-height: 0.95; }
.sign__line { display: flex; flex-wrap: wrap; justify-content: center; gap: 4px 28px; margin: 0; color: #fff; font-size: 15px; font-weight: 500; }
.sign__line a { color: var(--vang); text-decoration: none; font-weight: 600; }

/* Banner dạng ảnh + vùng bấm trong suốt đặt lên số điện thoại, Zalo, địa chỉ */
.sign.sign--anh { padding: 0; background: none; border-radius: 4px; box-shadow: 0 24px 30px -24px rgba(110, 15, 20, 0.7); }
.sign__img { display: block; width: 100%; height: auto; border-radius: 4px; }
.sign__svg { display: block; width: 100%; height: auto; border-radius: 4px; }
.sign__svg a text { transition: fill 0.15s; }
.sign__svg a:hover text, .sign__svg a:focus-visible text { fill: #fff; }
.sign__svg a:focus-visible { outline: 3px solid #fff; outline-offset: 2px; }
.sign__vung { position: absolute; display: block; border-radius: 4px; }
.sign__vung:hover { background: rgba(255, 255, 255, 0.14); box-shadow: 0 0 0 2px rgba(255, 210, 63, 0.75); }
.sign__vung:focus-visible { outline: 3px solid #fff; outline-offset: 1px; }

/* Chùm hoa lộc vừng rủ xuống từ mép biển – chuyển động duy nhất của trang */
.sign__flowers { position: absolute; top: 100%; left: 0; right: 0; height: 0; z-index: 3; pointer-events: none; }
.locvung { position: absolute; top: -6px; display: block; width: 46px; transform-origin: top center; animation: sway 7s ease-in-out infinite; }
.locvung svg { width: 100%; height: auto; overflow: visible; }
.sign__flowers .locvung:nth-child(1) { right: 30%; }
.sign__flowers .locvung:nth-child(2) { right: 22%; width: 40px; animation-delay: -2s; }
.sign__flowers .locvung:nth-child(3) { right: 10%; animation-delay: -4s; }
.sign__flowers .locvung:nth-child(4) { right: 3%; width: 38px; animation-delay: -1s; }
@keyframes sway { 0%, 100% { transform: rotate(-2.5deg); } 50% { transform: rotate(2.5deg); } }

.hero__body { display: grid; grid-template-columns: 5fr 6fr; gap: 56px; align-items: center; margin-top: 48px; }
.hero__lead { font-size: 21px; line-height: 1.55; font-weight: 500; max-width: 34ch; margin-bottom: 14px; }
.hero__note { color: var(--xam); max-width: 46ch; margin-bottom: 28px; }
.hero__note strong { color: var(--muc); }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero__photo img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 6px; }
.hero__photo figcaption { font-size: 14px; color: var(--xam); margin-top: 10px; }

/* ---------- Chân trang ---------- */
.footer { background: var(--xanh); color: rgba(241, 239, 230, 0.8); padding-top: 64px; }
.footer__grid { display: grid; grid-template-columns: 1.6fr 1fr 1.2fr; gap: 40px; padding-bottom: 48px; }
.footer h3 { font-family: var(--font-sign); font-weight: 700; font-size: 22px; color: var(--phan); margin-bottom: 14px; }
.footer__brand p { margin-top: 16px; max-width: 46ch; font-size: 15px; }
.footer__links { display: grid; gap: 8px; font-size: 15px; }
.footer__links a { text-decoration: none; }
.footer__links a:hover { color: var(--vang); }
.socials { display: flex; gap: 10px; margin-top: 16px; }
.socials a { min-width: 40px; height: 40px; padding: 0 10px; border-radius: 4px; display: grid; place-items: center; border: 1px solid rgba(241, 239, 230, 0.3); text-decoration: none; font-size: 13px; font-weight: 600; }
.socials a:hover { border-color: var(--vang); color: var(--vang); }
.footer__bottom { border-top: 1px solid rgba(241, 239, 230, 0.15); padding: 18px 0; font-size: 13px; line-height: 1.7; color: rgba(241, 239, 230, 0.6); }
.footer :focus-visible { outline-color: var(--vang); }

/* ---------- Nút nổi ---------- */
.float-contact { position: fixed; right: 18px; bottom: 88px; z-index: 90; display: flex; flex-direction: column; gap: 10px; }
.float-btn { width: 52px; height: 52px; border-radius: 50%; display: grid; place-items: center; color: #fff; font-weight: 700; font-size: 13px; text-decoration: none; box-shadow: 0 6px 16px rgba(0, 0, 0, 0.25); }
.float-btn .icon { width: 24px; height: 24px; }
.float-btn--zalo { background: var(--zalo); }
.float-btn--phone { background: var(--do); }
.to-top {
  position: fixed; right: 20px; bottom: 24px; z-index: 90; width: 48px; height: 48px; border-radius: 6px; border: 0;
  background: var(--muc); color: #fff; display: grid; place-items: center;
  opacity: 0; visibility: hidden; transition: opacity 0.2s, visibility 0.2s;
}
.to-top.is-visible { opacity: 1; visibility: visible; }
.mobile-bar { display: none; }

@media (max-width: 1000px) {
  .hero__body { grid-template-columns: 1fr; gap: 40px; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .logo__mark { width: 36px; height: 36px; }
  .logo__mark--img { width: auto; height: 42px; }
  .logo__name { font-size: 23px; }

  .hero { padding-top: calc(var(--header-h) + 14px); padding-bottom: 56px; }
  .sign { padding: 22px 18px 18px; }
  .sign__top { font-size: 17px; }
  .sign__line { flex-direction: column; gap: 2px; font-size: 14px; }
  .sign__flowers .locvung:nth-child(1), .sign__flowers .locvung:nth-child(2) { display: none; }
  .sign__flowers .locvung:nth-child(3) { right: 12%; width: 32px; }
  .sign__flowers .locvung:nth-child(4) { right: 2%; width: 30px; }
  .hero__body { margin-top: 36px; gap: 28px; }
  .hero__text { padding-right: 56px; }
  .hero__lead { font-size: 18px; }
  .hero__actions { margin-right: -56px; }
  .hero__actions .btn { flex: 1 1 100%; }

  .footer__grid { grid-template-columns: 1fr; gap: 28px; }

  .float-contact { display: none; }
  .to-top { bottom: 84px; right: 12px; width: 42px; height: 42px; }
  .mobile-bar {
    display: grid; grid-template-columns: 1fr 1fr 1.4fr; gap: 8px; position: fixed; left: 0; right: 0; bottom: 0; z-index: 95;
    padding: 8px 10px calc(8px + env(safe-area-inset-bottom)); background: #fff; border-top: 1px solid var(--ke);
  }
  .mobile-bar__btn { display: flex; align-items: center; justify-content: center; gap: 6px; min-height: 50px; border-radius: 6px; font-weight: 600; color: #fff; text-decoration: none; }
  .mobile-bar__btn--call { background: var(--do); }
  .mobile-bar__btn--zalo { background: var(--zalo); }
  .mobile-bar__btn--reg { background: var(--xanh); }
}