@import url("colors.css");

/* =========================================================================
   Xịt chống gỉ bôi trơn đa năng 450ml — landing bán hàng 1 sản phẩm
   DNA: FMCG Digital Shelf — mobile-first, ảnh sản phẩm trong khung sáng,
   giá lớn, CTA Zalo bám đáy. Toàn bộ màu lấy từ colors.css.
   ========================================================================= */

/* --- 1. Token cục bộ ---------------------------------------------------- */
:root {
  /* Ngoại lệ màu duy nhất ngoài scale: màu thương hiệu Zalo cho nút Zalo */
  --zalo: #0088ff;
  /* trạng thái hover pha từ chính màu Zalo, không thêm mã màu mới */
  --zalo-hover: color-mix(in srgb, #0088ff 90%, #000000);

  --font-sans: "Be Vietnam Pro", -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --gutter: 24px;
  --maxw: 1120px;

  --z-menu: 300;
  --z-header: 310;
  --z-sticky: 350;
  --z-zalo: 360;
  --z-gdpr: 400;
  --z-popup: 460;

  --line: 1px solid var(--gray-5);
  --sticky-h: 72px;
}

/* --- 2. Reset nhẹ ------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 76px;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 16px;
  line-height: 1.65;
  color: var(--gray-12);
  background: var(--background);
  overflow-x: hidden;
  padding-bottom: 96px; /* chừa chỗ cho sticky CTA mobile */
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-11); }
h1, h2, h3, h4 { font-weight: 700; line-height: 1.22; margin: 0; letter-spacing: -0.015em; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
figure, blockquote { margin: 0; } /* bỏ margin mặc định 40px của trình duyệt */

:focus-visible {
  outline: 2px solid var(--accent-9);
  outline-offset: 2px;
  border-radius: 3px;
}

.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.section { padding-block: 56px; }
.section--tight { padding-block: 40px; }
.section--alt { background: var(--gray-1); border-block: var(--line); }

.eyebrow {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-11);
  margin-bottom: 10px;
}

.section-title {
  font-size: clamp(24px, 5.2vw, 32px);
  color: var(--gray-12);
  margin-bottom: 10px;
}

.section-sub {
  color: var(--gray-11);
  max-width: 62ch;
  margin-bottom: 28px;
}

/* --- 3. Nút ------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font: inherit;
  font-weight: 700;
  font-size: 15px;
  line-height: 1;
  white-space: nowrap;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.16s ease, border-color 0.16s ease, color 0.16s ease;
}

.btn svg { flex: none; }

.btn--zalo {
  background: var(--zalo);
  color: #ffffff;
  border-color: var(--zalo);
}
.btn--zalo:hover { background: var(--zalo-hover); border-color: var(--zalo-hover); }

.btn--primary {
  background: var(--accent-9);
  color: var(--accent-contrast);
  border-color: var(--accent-9);
}
.btn--primary:hover { background: var(--accent-10); border-color: var(--accent-10); }

.btn--outline {
  background: var(--background);
  color: var(--accent-11);
  border-color: var(--accent-7);
}
.btn--outline:hover { background: var(--accent-2); border-color: var(--accent-8); }

.btn--ghost {
  background: transparent;
  color: var(--gray-12);
  border-color: var(--gray-6);
}
.btn--ghost:hover { background: var(--gray-3); }

.btn--lg { min-height: 56px; font-size: 17px; padding-inline: 28px; }
.btn--block { width: 100%; }

/* Nền Zalo #0088ff với chữ trắng chỉ đạt 3.52:1 — dưới ngưỡng 4.5:1 của chữ thường.
   Đưa nhãn lên 19px/700 để rơi vào ngưỡng chữ lớn (3:1). Đặt sau .btn--lg để
   không bị quy tắc sau ghi đè. */
.btn--zalo { font-size: 19px; }

/* --- 4. Header ---------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: var(--background);
  border-bottom: var(--line);
}

.header-row {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 60px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--gray-12);
  text-decoration: none;
  margin-right: auto;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 30px; height: 30px;
  border-radius: var(--radius);
  background: var(--accent-9);
  color: var(--accent-contrast);
  font-size: 15px;
}

.nav { display: none; }

.nav-list { display: flex; align-items: center; gap: 22px; }

.nav-list a {
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-11);
  text-decoration: none;
  padding-block: 6px;
  border-bottom: 2px solid transparent;
}
.nav-list a:hover { color: var(--accent-11); }
.nav-list a[aria-current] { color: var(--accent-11); border-bottom-color: var(--accent-9); }

.header-tel {
  display: none;
  align-items: center;
  gap: 7px;
  font-size: 14px;
  font-weight: 700;
  color: var(--gray-12);
  text-decoration: none;
}
.header-tel:hover { color: var(--accent-11); }

/* menu gọn cho mobile — details/summary, không cần JS */
.menu { position: relative; z-index: var(--z-menu); }

.menu > summary {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 40px;
  padding: 8px 12px;
  border: 1px solid var(--gray-6);
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 700;
  color: var(--gray-12);
  cursor: pointer;
  list-style: none;
}
.menu > summary::-webkit-details-marker { display: none; }
.menu[open] > summary { border-color: var(--accent-8); color: var(--accent-11); }

.menu-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  min-width: 208px;
  padding: 8px;
  background: var(--background);
  border: var(--line);
  border-radius: var(--radius);
  box-shadow: 0 8px 28px var(--gray-a5);
}

.menu-panel a {
  display: block;
  padding: 10px 12px;
  border-radius: var(--radius);
  font-size: 15px;
  color: var(--gray-12);
  text-decoration: none;
}
.menu-panel a:hover { background: var(--accent-2); color: var(--accent-11); }
.menu-panel a[aria-current] { color: var(--accent-11); font-weight: 700; }

/* --- 5. Hero ------------------------------------------------------------ */
.hero { padding-block: 28px 44px; }

.hero-grid { display: grid; gap: 24px; }

.hero-media {
  position: relative;
  background: var(--accent-2);
  border: var(--line);
  border-radius: var(--radius);
  padding: 18px;
}

.hero-media img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: var(--radius);
}

.hero-flag {
  position: absolute;
  top: 12px; left: 12px;
  padding: 5px 10px;
  border-radius: var(--radius);
  background: var(--accent-9);
  color: var(--accent-contrast);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.hero h1 {
  font-size: clamp(27px, 6.6vw, 40px);
  color: var(--gray-12);
  margin-bottom: 10px;
}

.hero-tagline {
  color: var(--accent-11);
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 12px;
}

.hero-lead { color: var(--gray-11); margin-bottom: 20px; }

.rating-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 14px;
  font-size: 14px;
  color: var(--gray-11);
  margin-bottom: 18px;
}

.stars { display: inline-flex; gap: 2px; color: var(--accent-9); }
.rating-score { font-weight: 700; color: var(--gray-12); }
.dot-sep { color: var(--gray-7); }

.price-box {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px 14px;
  padding: 18px;
  border: 1px solid var(--accent-6);
  border-radius: var(--radius);
  background: var(--accent-2);
  margin-bottom: 18px;
}

.price-now {
  font-size: clamp(30px, 7.5vw, 40px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--accent-12);
}

.price-old {
  font-size: 17px;
  color: var(--gray-10);
  text-decoration: line-through;
}

.price-tag {
  padding: 4px 9px;
  border-radius: var(--radius);
  background: var(--accent-9);
  color: var(--accent-contrast);
  font-size: 13px;
  font-weight: 700;
}

.price-note {
  flex-basis: 100%;
  font-size: 13px;
  color: var(--gray-11);
}

.cta-row { display: flex; flex-direction: column; gap: 10px; }

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  margin-top: 14px;
  font-size: 13.5px;
  color: var(--gray-11);
}

.hero-trust li { display: inline-flex; align-items: center; gap: 6px; }
.hero-trust svg { color: var(--accent-11); }

/* --- 6. USP strip ------------------------------------------------------- */
.usp-strip { border-block: var(--line); background: var(--gray-1); }

.usp-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--gray-5);
  border-inline: var(--line);
  margin-inline: calc(var(--gutter) * -1);
}

.usp-list li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 18px 16px;
  background: var(--gray-1);
}

.usp-list svg { color: var(--accent-11); margin-bottom: 4px; }
.usp-label { font-weight: 700; font-size: 15px; color: var(--gray-12); }
.usp-note { font-size: 13px; color: var(--gray-11); }

/* --- 7. Công dụng ------------------------------------------------------- */
.use-block { display: grid; gap: 20px; }
.use-block + .use-block { margin-top: 48px; padding-top: 48px; border-top: var(--line); }

.use-block img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius);
  border: var(--line);
}

.use-index {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--accent-11);
  margin-bottom: 8px;
}

.use-block h3 { font-size: clamp(20px, 4.6vw, 25px); margin-bottom: 10px; }
.use-block p { color: var(--gray-11); margin-bottom: 14px; }

.check-list { display: grid; gap: 8px; }

.check-list li {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 9px;
  font-size: 15px;
  color: var(--gray-12);
}
.check-list svg { color: var(--accent-9); margin-top: 3px; }

/* --- 8. Cách dùng ------------------------------------------------------- */
.steps { display: grid; gap: 1px; background: var(--gray-5); border: var(--line); border-radius: var(--radius); overflow: hidden; }

.step { background: var(--background); padding: 24px 20px; }

.step-num {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--accent-8);
  margin-bottom: 12px;
}

.step h3 { font-size: 18px; margin-bottom: 6px; }
.step p { color: var(--gray-11); font-size: 15px; }

/* --- 9. Thông số (data table) ------------------------------------------- */
.spec-table { width: 100%; border-collapse: collapse; font-size: 15px; }

.spec-table caption {
  text-align: left;
  font-size: 13px;
  color: var(--gray-11);
  padding-bottom: 12px;
}

.spec-table th,
.spec-table td { padding: 13px 4px; border-bottom: var(--line); vertical-align: top; }

.spec-table th {
  text-align: left;
  font-weight: 500;
  color: var(--gray-11);
  width: 52%;
}

.spec-table td {
  text-align: right;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-12);
}

.spec-table tr:first-child th,
.spec-table tr:first-child td { border-top: var(--line); }

/* --- 10. Đánh giá ------------------------------------------------------- */
.quote-grid { display: grid; gap: 16px; }
.quote-grid > * { min-width: 0; }

.quote {
  padding: 22px 20px;
  border: var(--line);
  border-radius: var(--radius);
  background: var(--background);
}

.quote .stars { margin-bottom: 10px; }
.quote p { color: var(--gray-12); margin-bottom: 14px; }

.quote footer { font-size: 14px; color: var(--gray-11); }
.quote-name { display: block; font-weight: 700; color: var(--gray-12); }

/* --- 11. Ưu đãi cuối ---------------------------------------------------- */
.offer-box {
  /* accent-9 với chữ trắng chỉ 2.6–3.3:1 tuỳ bảng màu; accent-11 đưa lên >= 4.5:1 */
  background: var(--accent-11);
  color: var(--accent-contrast);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
}

.offer-box h2 { font-size: clamp(23px, 5.4vw, 31px); margin-bottom: 8px; }
.offer-box .offer-sub { margin-bottom: 22px; }

.offer-price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px 14px;
  margin-bottom: 20px;
}

.offer-price .price-now { color: var(--accent-contrast); }
.offer-price .price-old { color: var(--accent-contrast); } /* phân cấp bằng gạch ngang, không hạ tương phản */

.offer-price .price-tag {
  background: var(--accent-contrast);
  color: var(--accent-11);
}

.offer-perks {
  display: grid;
  gap: 9px;
  justify-content: center;
  margin-bottom: 24px;
  text-align: left;
}

.offer-perks li {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 9px;
  font-size: 15px;
}

.offer-box .btn--zalo {
  background: var(--accent-contrast);
  color: var(--accent-11);
  border-color: var(--accent-contrast);
}
.offer-box .btn--zalo:hover { background: var(--accent-3); border-color: var(--accent-3); }

.offer-limit {
  margin-top: 14px;
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

/* --- 12. FAQ ------------------------------------------------------------ */
.faq-list { border-top: var(--line); }

.faq-item { border-bottom: var(--line); }

.faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 0;
  font-weight: 700;
  font-size: 16.5px;
  color: var(--gray-12);
  cursor: pointer;
  list-style: none;
}
.faq-item > summary::-webkit-details-marker { display: none; }
.faq-item > summary:hover { color: var(--accent-11); }

.faq-item > summary::after {
  content: "";
  flex: none;
  width: 12px; height: 12px;
  margin-left: auto;
  margin-top: 7px;
  border-right: 2px solid var(--accent-9);
  border-bottom: 2px solid var(--accent-9);
  transform: rotate(45deg);
  transition: transform 0.18s ease;
}
.faq-item[open] > summary::after { transform: rotate(-135deg); }

.faq-answer { padding: 0 34px 20px 0; color: var(--gray-11); }

/* --- 13. Footer --------------------------------------------------------- */
.site-footer {
  border-top: var(--line);
  background: var(--gray-1);
  padding-block: 40px 32px;
}

.footer-grid { display: grid; gap: 26px; }

.footer-brand { font-weight: 700; font-size: 15px; color: var(--gray-12); margin-bottom: 10px; }
.footer-text { font-size: 14.5px; color: var(--gray-11); }
.footer-text a { color: var(--accent-11); text-decoration: none; }
.footer-text a:hover { text-decoration: underline; }

.footer-head {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-11);
  margin-bottom: 10px;
}

.footer-links { display: grid; gap: 8px; }
.footer-links a { font-size: 14.5px; color: var(--gray-12); text-decoration: none; }
.footer-links a:hover { color: var(--accent-11); }

.footer-bottom {
  margin-top: 28px;
  padding-top: 20px;
  border-top: var(--line);
  font-size: 13px;
  color: var(--gray-11);
}

/* --- 14. Sticky CTA (mobile) -------------------------------------------- */
.sticky-cta {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: var(--z-sticky);
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: var(--sticky-h);
  padding: 10px var(--gutter);
  padding-bottom: max(10px, env(safe-area-inset-bottom));
  background: var(--background);
  border-top: var(--line);
  box-shadow: 0 -4px 20px var(--gray-a4);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.sticky-price { line-height: 1.25; }
.sticky-price .now { display: block; font-size: 19px; font-weight: 700; color: var(--accent-12); }
.sticky-price .old { font-size: 13px; color: var(--gray-10); text-decoration: line-through; }

.sticky-cta .btn { margin-left: auto; }

.sticky-cta.is-hidden {
  transform: translateY(110%);
  opacity: 0;
  pointer-events: none;
}

@media (max-width: 360px) {
  /* Nhãn Zalo giữ 19px (yêu cầu tương phản), nên thu gọn padding và bỏ icon để nút đủ chỗ */
  .sticky-cta { padding-inline: 14px; gap: 10px; }
  .sticky-cta .btn { padding-inline: 14px; }
  .sticky-cta .btn svg { display: none; }
  .sticky-price .now { font-size: 18px; }
  .sticky-price .old { font-size: 12px; }
}

/* --- 15. GDPR banner ---------------------------------------------------- */
.gdpr-banner {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: var(--z-gdpr);
  background: var(--background);
  border-top: 2px solid var(--accent-9);
  box-shadow: 0 -6px 28px var(--gray-a5);
  padding: 18px var(--gutter);
  padding-bottom: max(18px, env(safe-area-inset-bottom));
}
.gdpr-banner[hidden] { display: none; }

.gdpr-inner {
  max-width: var(--maxw);
  margin-inline: auto;
  display: grid;
  gap: 14px;
}

.gdpr-title { font-weight: 700; font-size: 15px; margin-bottom: 4px; color: var(--gray-12); }
.gdpr-text { font-size: 14px; color: var(--gray-11); }
.gdpr-text a { color: var(--accent-11); }

.gdpr-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.gdpr-actions .btn { flex: 1 1 160px; }

/* --- 16. Trang Chính sách bảo mật --------------------------------------- */
.legal { padding-block: 40px 64px; }
.legal-wrap { max-width: 760px; }

.legal h1 { font-size: clamp(26px, 6vw, 36px); margin-bottom: 10px; }
.legal-meta { font-size: 14px; color: var(--gray-11); margin-bottom: 32px; }

.legal-note {
  padding: 16px 18px;
  border: 1px solid var(--accent-6);
  background: var(--accent-2);
  border-radius: var(--radius);
  font-size: 14.5px;
  color: var(--accent-12);
  margin-bottom: 32px;
}

.legal section + section { margin-top: 34px; }
.legal h2 { font-size: 20px; margin-bottom: 10px; color: var(--gray-12); }
.legal p { color: var(--gray-11); margin-bottom: 12px; }
.legal ul { display: grid; gap: 8px; margin-bottom: 12px; }

.legal ul li {
  display: grid;
  grid-template-columns: 8px 1fr;
  gap: 12px;
  color: var(--gray-11);
  font-size: 15px;
}

.legal ul li::before {
  content: "";
  width: 6px; height: 6px;
  margin-top: 10px;
  border-radius: 50%;
  background: var(--accent-9);
}

.legal-toc {
  padding: 18px 20px;
  border: var(--line);
  border-radius: var(--radius);
  background: var(--gray-1);
  margin-bottom: 32px;
}
.legal-toc ol { margin: 0; padding-left: 20px; display: grid; gap: 6px; font-size: 14.5px; }
.legal-toc a { color: var(--gray-12); text-decoration: none; }
.legal-toc a:hover { color: var(--accent-11); text-decoration: underline; }

/* --- 17. Responsive ----------------------------------------------------- */
@media (min-width: 640px) {
  body { padding-bottom: 0; }
  .sticky-cta { display: none; }
  .cta-row { flex-direction: row; }
  .cta-row .btn { flex: 0 1 auto; }
  .usp-list { grid-template-columns: repeat(3, 1fr); }
  .quote-grid { grid-template-columns: repeat(2, 1fr); }
  .gdpr-inner { grid-template-columns: 1fr auto; align-items: center; }
  .gdpr-actions { flex-wrap: nowrap; }
  .gdpr-actions .btn { flex: 0 0 auto; }
}

@media (min-width: 768px) {
  .section { padding-block: 72px; }
  .hero { padding-block: 40px 60px; }
  .nav { display: block; }
  .menu { display: none; }
  .header-tel { display: inline-flex; }
  .usp-list { grid-template-columns: repeat(5, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .quote-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1.5fr 1fr 1fr; gap: 40px; }
  .offer-box { padding: 48px 40px; }
  .spec-table th { width: 58%; }
}

@media (min-width: 960px) {
  .hero-grid { grid-template-columns: 1fr 1fr; gap: 44px; align-items: center; }
  .use-block { grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
  .use-block--flip .use-media { order: 2; }
  .spec-layout { display: grid; grid-template-columns: 300px 1fr; gap: 48px; align-items: start; }
}

/* --- 18. Giảm chuyển động ----------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* --- 19. Nhãn tin cậy trong hero ---------------------------------------- */
.proof-badges { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }

.proof-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border-radius: var(--radius);
  background: var(--accent-3);
  color: var(--accent-12);
  font-size: 13px;
  font-weight: 700;
}

/* --- 20. Khối chốt đơn: đồng hồ ưu đãi + form đặt hàng ------------------- */
.order-card {
  margin-top: 22px;
  padding: 22px 18px;
  border: var(--line);
  border-radius: var(--radius);
  background: var(--background);
  box-shadow: 0 2px 14px var(--gray-a3);
}

.countdown { margin-bottom: 20px; }

.countdown-label { font-size: 14px; font-weight: 700; color: var(--gray-12); margin-bottom: 10px; }

.countdown-boxes { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }

.cd-box {
  display: grid;
  gap: 2px;
  justify-items: center;
  padding: 8px 4px;
  border: 1px solid var(--accent-6);
  border-radius: var(--radius);
  background: var(--accent-2);
}

.cd-box b {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 22px;
  line-height: 1.1;
  color: var(--accent-12);
}

.cd-box i { font-style: normal; font-size: 11px; color: var(--gray-11); }

.order-form h3 { font-size: 21px; color: var(--gray-12); margin-bottom: 6px; }
.order-sub { font-size: 14px; color: var(--gray-11); margin-bottom: 16px; }

.order-form input[type="text"],
.order-form input[type="tel"] {
  width: 100%;
  min-height: 48px;
  padding: 12px 14px;
  font: inherit;
  /* 16px để iOS không tự phóng to khi đặt con trỏ vào ô nhập */
  font-size: 16px;
  color: var(--gray-12);
  background: var(--background);
  border: 1px solid var(--gray-6);
  border-radius: var(--radius);
  margin-bottom: 10px;
}

.order-form input::placeholder { color: var(--gray-10); }

.order-form input:focus-visible,
.order-form button:focus-visible,
.order-popup-close:focus-visible {
  outline: 2px solid var(--accent-9);
  outline-offset: 2px;
}

.order-form input[type="text"]:focus-visible,
.order-form input[type="tel"]:focus-visible { border-color: var(--accent-9); }

.combo {
  border: 1px solid var(--gray-5);
  border-radius: var(--radius);
  padding: 10px 14px 6px;
  margin: 6px 0 14px;
}

.combo legend { padding: 0 6px; font-size: 13px; font-weight: 700; color: var(--gray-12); }

.combo label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 11px 2px;
  border-bottom: var(--line);
  font-size: 15px;
  color: var(--gray-12);
  cursor: pointer;
}
.combo label:last-of-type { border-bottom: 0; }

.combo input,
.consent input {
  flex: none;
  width: 20px;
  height: 20px;
  margin: 1px 0 0;
  accent-color: var(--accent-9);
}

.combo b { color: var(--accent-12); }
.combo em { font-style: normal; font-size: 13px; color: var(--gray-11); }

.consent {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--gray-11);
  margin-bottom: 10px;
  cursor: pointer;
}
.consent a { color: var(--accent-11); }

.tls-note { font-size: 13px; color: var(--gray-11); margin-bottom: 14px; }

/* Nhãn nút dài nên cho phép xuống dòng, khác mặc định nowrap của .btn */
.order-form .btn { white-space: normal; text-align: center; line-height: 1.28; }

.form-note { margin-top: 14px; font-size: 14.5px; }
.form-note:empty { display: none; }

.form-note p { margin-bottom: 12px; }

.form-note.is-error {
  padding: 13px 15px;
  border: 1px solid var(--accent-7);
  border-radius: var(--radius);
  background: var(--accent-2);
  color: var(--gray-12);
}

.form-note.is-ok {
  padding: 15px;
  border: 1px solid var(--accent-6);
  border-radius: var(--radius);
  background: var(--accent-3);
  color: var(--accent-12);
}
.form-note.is-ok p { font-weight: 700; }

.ship-anchor { margin-top: 14px; font-size: 14px; color: var(--gray-11); }
.ship-anchor s { color: var(--gray-10); }
.ship-anchor b { color: var(--accent-12); }

/* --- 21. Nút "Mua Ngay" ------------------------------------------------- */
/* accent-9 với chữ trắng chỉ ~3:1 — dưới ngưỡng chữ thường 4.5:1;
   accent-11 đưa tương phản lên >= 4.5:1 cho nhãn 15px. */
.btn--buy {
  background: var(--accent-11);
  color: var(--accent-contrast);
  border-color: var(--accent-11);
}
.btn--buy:hover { background: var(--accent-12); border-color: var(--accent-12); }

.sticky-actions { display: flex; align-items: center; gap: 8px; margin-left: auto; }
.sticky-cta .sticky-actions .btn { margin-left: 0; }

/* Hai nút cạnh thanh giá: thu gọn dần để không vỡ ở bề ngang 320px */
@media (max-width: 400px) {
  .sticky-cta { gap: 8px; padding-inline: 12px; }
  .sticky-actions { gap: 6px; }
  .sticky-cta .btn { padding-inline: 12px; }
  /* nhãn Zalo giữ 19px vì lý do tương phản, nên bỏ icon để hai nút đủ chỗ */
  .sticky-cta .btn--zalo svg { display: none; }
  .sticky-price .now { font-size: 17px; }
  .sticky-price .old { font-size: 12px; }
}

/* --- 22. Popup đặt hàng ------------------------------------------------- */
.order-popup {
  position: fixed;
  inset: 0;
  /* 460 > 400 của banner cookie: popup nằm trên cùng khi cả hai cùng hiện */
  z-index: var(--z-popup);
  display: flex;
  align-items: flex-end;
  justify-content: center;
}
.order-popup[hidden] { display: none; }

/* gray-a10 = #0000007c, tương đương nền đen ~50% mà vẫn lấy từ bảng màu */
.order-popup-backdrop { position: absolute; inset: 0; background: var(--gray-a10); }

.order-popup-panel {
  position: relative;
  width: 100%;
  max-width: 520px;
  max-height: 92vh;
  overflow-y: auto;
  padding: 16px 16px 20px;
  padding-bottom: max(20px, env(safe-area-inset-bottom));
  background: var(--background);
  border-radius: var(--radius) var(--radius) 0 0;
  box-shadow: 0 -8px 30px var(--gray-a6);
}

.order-popup-close {
  position: absolute;
  top: 12px; right: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  padding: 0;
  border: 1px solid var(--gray-6);
  border-radius: var(--radius);
  background: var(--background);
  color: var(--gray-12);
  cursor: pointer;
}
.order-popup-close:hover { background: var(--gray-3); }

.order-popup .order-card {
  margin-top: 0;
  padding: 6px 0 0;
  border: 0;
  box-shadow: none;
}

.order-popup .order-form h3 { padding-right: 44px; }
.order-popup .countdown-label { padding-right: 44px; }

body.is-order-open { overflow: hidden; }

@media (min-width: 640px) {
  .order-popup { align-items: center; padding: 24px; }
  .order-popup-panel { border-radius: var(--radius); padding-bottom: 20px; }
}

@media (min-width: 768px) {
  .order-card { padding: 28px 26px; }
}

/* --- 23. Sticky CTA nhường chỗ cho banner cookie ------------------------ */
/* Banner cookie (fixed bottom, z 400) phủ kín thanh CTA bám đáy (z 350) ở lượt
   truy cập đầu nên hai nút dưới đó bấm không được. Còn banner thì ẩn hẳn thanh
   CTA; chọn xong cookie, banner nhận [hidden] và thanh CTA hiện lại như cũ.
   :has() cần ở đây vì .sticky-cta đứng TRƯỚC .gdpr-banner trong DOM, không
   dùng được bộ chọn anh em ~. */
body:has(.gdpr-banner:not([hidden])) .sticky-cta { display: none; }