/* ===== Du Học Minh Đạt — custom styles (extends Tailwind utilities) ===== */

:root { scroll-behavior: smooth; }
html { scroll-padding-top: 88px; } /* offset sticky header for anchor links */

body { -webkit-font-smoothing: antialiased; }

/* Smooth Lucide icon sizing safety */
[data-lucide] { stroke-width: 2; }

/* ---------- Buttons ---------- */
.btn-primary,
.btn-gold,
.btn-ghost-light {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  border-radius: 0.75rem;
  padding: 0.7rem 1.25rem;
  line-height: 1;
  cursor: pointer;
  transition: transform .15s ease, background-color .2s ease, box-shadow .2s ease, color .2s ease;
  white-space: nowrap;
}
.btn-primary { background:#D32027; color:#fff; box-shadow:0 6px 16px -6px rgba(211,32,39,.6); }
.btn-primary:hover { background:#B01218; transform:translateY(-1px); }
.btn-gold { background:#F5B301; color:#0F172A; box-shadow:0 6px 16px -6px rgba(245,179,1,.6); }
.btn-gold:hover { background:#D99A00; transform:translateY(-1px); }
.btn-ghost-light { background:rgba(255,255,255,.10); color:#fff; box-shadow:inset 0 0 0 1px rgba(255,255,255,.35); }
.btn-ghost-light:hover { background:rgba(255,255,255,.20); transform:translateY(-1px); }
.btn-primary:active,.btn-gold:active,.btn-ghost-light:active { transform:translateY(0) scale(.99); }

/* ---------- Focus ring (accessibility) ---------- */
.focus-ring:focus-visible,
.btn-primary:focus-visible,
.btn-gold:focus-visible,
.btn-ghost-light:focus-visible,
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 3px solid #F5B301;
  outline-offset: 2px;
  border-radius: 0.5rem;
}

/* ---------- Nav links ---------- */
.nav-link {
  position: relative;
  padding: 0.55rem 0.85rem;
  font-weight: 600;
  font-size: 0.95rem;
  color: #334155;
  border-radius: 0.5rem;
  transition: color .2s ease, background-color .2s ease;
}
.nav-link:hover { color:#D32027; background:#FFF1F1; }
.mobile-link {
  padding: 0.85rem 0.25rem;
  font-weight: 600;
  color: #1E293B;
  border-bottom: 1px solid #f1f5f9;
}
.mobile-link:hover { color:#D32027; }

/* ---------- Section helpers ---------- */
.eyebrow {
  display: inline-block;
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #D32027;
}
.eyebrow--light { color:#F8C84A; }
.section-title {
  font-family: 'Lexend', sans-serif;
  font-weight: 800;
  font-size: clamp(1.6rem, 3.5vw, 2.5rem);
  line-height: 1.2;
  color: #0F172A;
  margin-top: 0.5rem;
}

/* ---------- Flags ---------- */
.flag { width:1.3rem; height:0.95rem; border-radius:2px; object-fit:cover; box-shadow:0 0 0 1px rgba(255,255,255,.3); }
.flag-lg { width:2.5rem; height:1.75rem; border-radius:4px; object-fit:cover; box-shadow:0 1px 3px rgba(0,0,0,.2); flex:none; }

/* ---------- Country chips (hero) ---------- */
.country-chip {
  display:inline-flex; align-items:center; gap:.35rem;
  background:rgba(255,255,255,.12);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.25);
  padding:.4rem .8rem; border-radius:999px; font-weight:600; color:#fff;
}

/* ---------- Service cards ---------- */
.service-card {
  background:#fff; border-radius:1rem; padding:1.5rem;
  box-shadow:0 1px 2px rgba(15,23,42,.06);
  ring: 1px;
  border:1px solid #f1f5f9;
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.service-card:hover { transform:translateY(-4px); box-shadow:0 16px 32px -16px rgba(211,32,39,.35); border-color:#FFE0E0; }
.service-ico {
  display:grid; place-items:center; width:3.25rem; height:3.25rem;
  border-radius:.85rem; background:#FFF1F1; color:#D32027; margin-bottom:1rem;
}
.service-title { font-family:'Lexend',sans-serif; font-weight:700; font-size:1.15rem; color:#0F172A; }
.service-desc { margin-top:.5rem; color:#475569; font-size:.95rem; line-height:1.6; }

/* ---------- Feature list (about) ---------- */
.feature-li { display:flex; gap:.75rem; align-items:flex-start; color:#334155; font-size:1.05rem; }
.feature-ico { width:1.5rem; height:1.5rem; color:#16A34A; flex:none; margin-top:.1rem; }

/* ---------- Pricing ---------- */
.price-card {
  position:relative; background:#fff; border-radius:1.25rem; padding:1.75rem;
  border:1px solid #e2e8f0; display:flex; flex-direction:column;
  transition:transform .2s ease, box-shadow .2s ease;
}
.price-card:hover { transform:translateY(-4px); box-shadow:0 20px 40px -20px rgba(15,23,42,.3); }
.price-card--featured {
  background:linear-gradient(160deg,#D32027,#8F0E13); color:#fff; border:none;
  box-shadow:0 24px 48px -20px rgba(211,32,39,.6);
}
.price-amount { font-family:'Lexend',sans-serif; font-weight:800; font-size:2.75rem; line-height:1; margin-top:.25rem; }
.price-list { margin-top:1.25rem; display:flex; flex-direction:column; gap:.75rem; font-size:.95rem; flex:1; }
.price-list li { display:flex; gap:.6rem; align-items:flex-start; }
.price-list--dark li { color:#334155; }
.price-check { width:1.15rem; height:1.15rem; flex:none; margin-top:.15rem; color:#F8C84A; }
.price-list--dark .price-check { color:#16A34A; }

/* ---------- Why us ---------- */
.why-card {
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.10);
  border-radius:1rem; padding:1.5rem;
  transition:transform .2s ease, background-color .2s ease;
}
.why-card:hover { transform:translateY(-4px); background:rgba(255,255,255,.09); }
.why-ico { width:2.25rem; height:2.25rem; color:#F8C84A; }
.why-title { font-family:'Lexend',sans-serif; font-weight:700; font-size:1.1rem; color:#fff; margin-top:.85rem; }
.why-desc { margin-top:.4rem; color:#cbd5e1; font-size:.92rem; line-height:1.55; }

/* ---------- Process ---------- */
.step-card {
  position:relative; background:#fff; border:1px solid #f1f5f9; border-radius:1rem;
  padding:1.5rem 1.25rem; text-align:left;
  transition:transform .2s ease, box-shadow .2s ease;
}
.step-card:hover { transform:translateY(-4px); box-shadow:0 16px 32px -18px rgba(211,32,39,.35); }
.step-num {
  display:grid; place-items:center; width:2.5rem; height:2.5rem; border-radius:.75rem;
  background:#D32027; color:#fff; font-family:'Lexend',sans-serif; font-weight:800; font-size:1.1rem;
  margin-bottom:.85rem;
}
.step-title { font-family:'Lexend',sans-serif; font-weight:700; color:#0F172A; }
.step-desc { margin-top:.4rem; color:#475569; font-size:.9rem; line-height:1.55; }

/* ---------- Documents ---------- */
.doc-item { display:flex; gap:.85rem; align-items:flex-start; padding:1rem 1.25rem; color:#334155; }
.doc-ico { width:1.4rem; height:1.4rem; color:#16A34A; flex:none; margin-top:.1rem; }

/* ---------- Testimonials ---------- */
.testimonial { background:#fff; border:1px solid #f1f5f9; border-radius:1.25rem; padding:1.75rem; box-shadow:0 1px 2px rgba(15,23,42,.05); }
.avatar {
  display:grid; place-items:center; width:2.75rem; height:2.75rem; border-radius:999px;
  background:#FFF1F1; color:#D32027; font-family:'Lexend',sans-serif; font-weight:700;
}

/* ---------- Gallery ---------- */
.gallery-item {
  position:relative; overflow:hidden; border-radius:1rem;
  box-shadow:0 1px 2px rgba(15,23,42,.08); background:#f1f5f9;
}
.gallery-item img {
  width:100%; height:100%; aspect-ratio:3/4; object-fit:cover; object-position:top;
  transition:transform .4s ease; display:block;
}
.gallery-item:hover img { transform:scale(1.05); }
.gallery-item::after {
  content:""; position:absolute; inset:0;
  background:linear-gradient(to top, rgba(176,18,24,.25), transparent 45%);
  opacity:0; transition:opacity .3s ease;
}
.gallery-item:hover::after { opacity:1; }
.gallery-cap {
  position:absolute; left:0; right:0; bottom:0; z-index:1;
  padding:1.4rem .9rem .7rem; color:#fff; font-weight:600; font-size:.85rem;
  background:linear-gradient(to top, rgba(15,23,42,.82), transparent);
}

/* ---------- Partner cards ---------- */
.partner-item {
  position:relative; overflow:hidden; border-radius:1rem; background:#fff;
  border:1px solid #f1f5f9; box-shadow:0 1px 2px rgba(15,23,42,.06);
  transition:transform .2s ease, box-shadow .2s ease;
}
.partner-item:hover { transform:translateY(-4px); box-shadow:0 18px 36px -20px rgba(15,23,42,.35); }
.partner-item img { width:100%; aspect-ratio:4/3; object-fit:cover; object-position:center; display:block; }
.partner-cap {
  display:flex; align-items:center; gap:.5rem;
  padding:.9rem 1rem; font-weight:600; color:#0F172A; font-size:.95rem;
}
.partner-cap [data-lucide] { color:#D32027; flex:none; }

/* ---------- FAQ ---------- */
.faq-item { background:#fff; border:1px solid #f1f5f9; border-radius:0.85rem; overflow:hidden; }
.faq-q {
  display:flex; justify-content:space-between; align-items:center; gap:1rem;
  cursor:pointer; list-style:none; padding:1.1rem 1.25rem;
  font-family:'Lexend',sans-serif; font-weight:600; color:#0F172A;
}
.faq-q::-webkit-details-marker { display:none; }
.faq-chevron { width:1.25rem; height:1.25rem; color:#D32027; transition:transform .25s ease; flex:none; }
.faq-item[open] .faq-chevron { transform:rotate(180deg); }
.faq-a { padding:0 1.25rem 1.2rem; color:#475569; line-height:1.6; }

/* ---------- Contact ---------- */
.contact-ico { display:grid; place-items:center; width:2.75rem; height:2.75rem; border-radius:.75rem; background:#FFF1F1; color:#D32027; flex:none; }

/* ---------- Form ---------- */
.form-label { display:block; font-weight:600; font-size:.9rem; color:#1E293B; margin-bottom:.4rem; }
.form-input {
  width:100%; padding:.7rem .9rem; border:1px solid #cbd5e1; border-radius:.65rem;
  font-size:1rem; color:#0F172A; background:#fff; transition:border-color .2s ease, box-shadow .2s ease;
}
.form-input::placeholder { color:#94a3b8; }
.form-input:focus { border-color:#D32027; box-shadow:0 0 0 3px rgba(211,32,39,.15); outline:none; }
.form-input[aria-invalid="true"] { border-color:#DC2626; box-shadow:0 0 0 3px rgba(220,38,38,.15); }
.field-error { color:#DC2626; font-size:.82rem; margin-top:.3rem; }

/* ---------- Footer ---------- */
.footer-title { font-family:'Lexend',sans-serif; font-weight:700; color:#fff; margin-bottom:1rem; font-size:1.05rem; }
.footer-link { color:#cbd5e1; transition:color .2s ease; }
.footer-link:hover { color:#F8C84A; }

/* ---------- Floating buttons ---------- */
.float-item { position:relative; display:flex; align-items:center; justify-content:flex-end; }
.float-label {
  position:absolute; right:3.9rem; white-space:nowrap;
  background:#0F172A; color:#fff; font-size:.8rem; font-weight:600;
  padding:.4rem .7rem; border-radius:.5rem;
  opacity:0; transform:translateX(8px); pointer-events:none;
  box-shadow:0 8px 20px -6px rgba(0,0,0,.4);
  transition:opacity .2s ease, transform .2s ease;
}
.float-item:hover .float-label, .float-item:focus-visible .float-label { opacity:1; transform:translateX(0); }
.float-item:hover .float-btn { transform:scale(1.08); }
.float-btn {
  position:relative; display:grid; place-items:center; width:3.25rem; height:3.25rem;
  border-radius:999px; color:#fff; box-shadow:0 8px 20px -6px rgba(0,0,0,.4);
  transition:transform .2s ease;
}
.float-btn:hover { transform:scale(1.08); }
.float-ping {
  position:absolute; inset:0; border-radius:999px; opacity:.6;
  animation:float-ping 1.8s cubic-bezier(0,0,.2,1) infinite; z-index:-1;
}
@keyframes float-ping { 75%,100% { transform:scale(1.7); opacity:0; } }

/* ---------- Scroll reveal ---------- */
.reveal { opacity:0; transform:translateY(24px); transition:opacity .6s ease, transform .6s ease; }
.reveal.is-visible { opacity:1; transform:none; }

/* ---------- Header scrolled shadow ---------- */
#header.scrolled { box-shadow:0 6px 20px -12px rgba(15,23,42,.35); }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  :root { scroll-behavior:auto; }
  *,*::before,*::after { animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; }
  .reveal { opacity:1; transform:none; }
}