/* ============================================================
   Trang Lien he — bo cuc hai cot (lien he trai / FAQ phai)
   Nap SAU khoi <style> co san trong lien-he.html nen thang.
   Nguyen tac: do la tin hieu diem xuyet, khong do kin mang;
   ba tang chu ro rang; truc trai thang hang.
   ============================================================ */

/* ── Hero: nen toi keo dai, them dong tin cay ─────────────── */
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}
.hero-meta li {
  display: flex;
  align-items: center;
  gap: 9px;
  color: #cfcfcf;
  font-size: 13px;
  letter-spacing: .01em;
}
.hero-meta li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--red);
  flex-shrink: 0;
}

/* ── Khung hai cot ────────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, .82fr);
  gap: clamp(32px, 4vw, 64px);
  align-items: start;
}
.contact-col { min-width: 0; }
.contact-aside { min-width: 0; }

/* ── Nhan section nho ─────────────────────────────────────── */
.sec-label {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 14px;
  color: var(--gray);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.sec-label::before {
  content: '';
  width: 3px;
  height: 13px;
  background: var(--red);
  flex-shrink: 0;
}

/* ── The lien he chinh ────────────────────────────────────── */
.contact-card {
  padding: clamp(24px, 2.6vw, 34px);
  border: 1px solid var(--line);
  background: #f4f2ec;
  margin-bottom: 18px;
}
.contact-card:last-child { margin-bottom: 0; }
.contact-card h2 {
  margin: 0 0 10px;
  font-size: clamp(24px, 2.4vw, 32px);
  line-height: 1.12;
  letter-spacing: -.035em;
}
.contact-card p {
  margin: 0 0 20px;
  max-width: 46ch;
  color: #3a3733;
  font-size: 15px;
  line-height: 1.7;
}
.contact-card p:last-child { margin-bottom: 0; }

/* The Zalo — noi bat nhat trang, nen toi, gach do tren */
.contact-card-primary {
  border: 0;
  border-top: 4px solid var(--red);
  background: var(--ink);
  color: #fff;
}
.contact-card-primary .sec-label { color: #8f8b85; }
.contact-card-primary p { color: #b8b8b8; }

/* ── Nut ──────────────────────────────────────────────────── */
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.btn-lg {
  min-height: 58px;
  display: inline-flex;
  align-items: center;
  gap: 11px;
  padding: 0 26px;
  border: 1px solid var(--red);
  background: var(--red);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .01em;
  transition: background .2s, border-color .2s, transform .2s;
}
.btn-lg:hover { background: #b41118; border-color: #b41118; transform: translateY(-2px); }
.btn-lg svg { width: 18px; height: 18px; flex-shrink: 0; }
.btn-ghost {
  border-color: #4a4a4a;
  background: transparent;
  color: #fff;
}
.btn-ghost:hover { background: #fff; border-color: #fff; color: var(--ink); transform: translateY(-2px); }

/* Email hien thi to, de bam */
.email-line {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: clamp(17px, 1.7vw, 21px);
  font-weight: 700;
  letter-spacing: -.01em;
  border-bottom: 2px solid var(--red);
  padding-bottom: 3px;
  word-break: break-word;
}

/* ── Nut mang xa hoi mau do ───────────────────────────────── */
.social-buttons {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.social-buttons a {
  min-height: 62px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 12px;
  background: var(--red);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .02em;
  text-align: center;
  transition: background .2s, transform .2s;
}
.social-buttons a:hover { background: #b41118; transform: translateY(-3px); }
.social-buttons svg { width: 20px; height: 20px; flex-shrink: 0; }

/* ── Cot FAQ ──────────────────────────────────────────────── */
.faq-head {
  margin: 0 0 22px;
  font-size: clamp(24px, 2.4vw, 32px);
  line-height: 1.12;
  letter-spacing: -.035em;
}
.faq-list { display: grid; gap: 2px; }
.faq-item {
  padding: 20px 0 20px 20px;
  border-left: 3px solid var(--line);
  transition: border-color .2s;
}
.faq-item:hover { border-left-color: var(--red); }
.faq-item h3 {
  margin: 0 0 8px;
  font-size: 16px;
  line-height: 1.35;
  letter-spacing: -.015em;
}
.faq-item p {
  margin: 0;
  color: #3a3733;
  font-size: 14.5px;
  line-height: 1.7;
}
.faq-item a[href] { border-bottom: 1px solid var(--red); }

/* ── Dai ket trang ────────────────────────────────────────── */
/* main dang co padding-bottom lon (khoi <style> san co); dai toi nam trong
   main nen padding do tao ra vet sang giua CTA va footer. Cat o day. */
main#main { padding-bottom: 0; }

.contact-closing {
  margin-top: clamp(56px, 6vw, 88px);
  padding: clamp(34px, 4vw, 54px) 0;
  background: var(--ink);
  color: #fff;
}
.contact-closing-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}
.contact-closing h2 {
  margin: 0;
  max-width: 26ch;
  font-size: clamp(24px, 2.8vw, 38px);
  line-height: 1.12;
  letter-spacing: -.04em;
}
.contact-closing h2 span { color: var(--red); }

/* ── May tinh bang va dien thoai ──────────────────────────── */
@media (max-width: 980px) {
  .contact-grid { grid-template-columns: minmax(0, 1fr); gap: clamp(38px, 6vw, 52px); }
}
@media (max-width: 620px) {
  .hero-meta { gap: 8px 18px; }
  .hero-meta li { font-size: 12px; }
  .contact-card { padding: 22px 18px; }
  .contact-actions { flex-direction: column; align-items: stretch; }
  .btn-lg { justify-content: center; padding: 0 18px; }
  .social-buttons { grid-template-columns: minmax(0, 1fr); }
  .social-buttons a { justify-content: flex-start; padding: 0 18px; }
  .faq-item { padding: 16px 0 16px 15px; }
}