/* =========================================================
   WantSeoShopee — Landing styles
   Theme đồng bộ app (blue -> indigo, font Be Vietnam Pro).
   Tailwind lo layout/utilities; file này lo component + hiệu ứng.
   ========================================================= */

:root {
  --brand-50: #eff6ff;
  --brand-100: #dbeafe;
  --brand-500: #2563eb;
  --brand-600: #1d4ed8;
  --brand-700: #1e40af;
  --indigo-600: #4f46e5;
  --zalo: #0068ff;
  --zalo-dark: #0050d8;
  --ink-100: #f1f5f9;
  --ink-200: #e2e8f0;
  --ink-300: #cbd5e1;
  --ink-400: #94a3b8;
  --ink-500: #64748b;
  --ink-700: #334155;
  --ink-900: #0f172a;
}

html { -webkit-tap-highlight-color: transparent; }
body { overflow-x: hidden; }

/* Anchor offset cho header sticky */
section[id] { scroll-margin-top: 84px; }

/* ---------------- Header ---------------- */
#site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--ink-200);
  box-shadow: 0 8px 30px -16px rgba(15, 23, 42, 0.25);
}

.nav-link {
  position: relative;
  padding: 0.5rem 0.85rem;
  border-radius: 0.7rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--ink-500);
  transition: color 0.2s, background 0.2s;
}
.nav-link:hover { color: var(--brand-600); background: var(--brand-50); }

.mobile-link {
  display: block;
  padding: 0.7rem 0.9rem;
  border-radius: 0.7rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink-700);
}
.mobile-link:hover { background: var(--ink-100); color: var(--brand-600); }

/* ---------------- Buttons ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border-radius: 0.85rem;
  padding: 0.7rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, border-color 0.18s;
  cursor: pointer;
}
.btn:active { transform: translateY(1px) scale(0.99); }

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--brand-500), var(--indigo-600));
  box-shadow: 0 10px 24px -10px rgba(37, 99, 235, 0.7);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 30px -10px rgba(37, 99, 235, 0.75); }

.btn-outline {
  color: var(--brand-700);
  background: #fff;
  border: 1.5px solid var(--ink-200);
}
.btn-outline:hover { border-color: var(--brand-300, #93c5fd); background: var(--brand-50); transform: translateY(-2px); }

.btn-zalo {
  color: #fff;
  background: linear-gradient(135deg, var(--zalo), var(--zalo-dark));
  box-shadow: 0 10px 24px -10px rgba(0, 104, 255, 0.7);
}
.btn-zalo:hover { transform: translateY(-2px); box-shadow: 0 16px 30px -10px rgba(0, 104, 255, 0.8); }

.btn-glass {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.28);
  backdrop-filter: blur(6px);
}
.btn-glass:hover { background: rgba(255, 255, 255, 0.22); transform: translateY(-2px); }

/* ---------------- Eyebrow / titles ---------------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border-radius: 999px;
  padding: 0.35rem 0.8rem;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--brand-700);
  background: var(--brand-50);
  border: 1px solid #dbeafe;
}
.eyebrow--soft { color: var(--brand-600); }

/* Chip tin cậy (hero) — viên thuốc inline, icon trái + chữ căn giữa */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border-radius: 0.75rem;
  padding: 0.55rem 0.9rem;
  font-size: 0.85rem;
  font-weight: 600;
  line-height: 1;
  color: var(--ink-700);
  background: #fff;
  border: 1px solid var(--ink-200);
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.05);
}
.chip > svg { flex-shrink: 0; }

.gradient-text {
  background: linear-gradient(120deg, var(--brand-500), var(--indigo-600));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.section { padding-top: 5rem; padding-bottom: 5rem; }
@media (min-width: 1024px) { .section { padding-top: 6.5rem; padding-bottom: 6.5rem; } }

.section-title {
  margin-top: 1rem;
  font-size: clamp(1.65rem, 3.6vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--ink-900);
}
.section-sub {
  margin-top: 0.9rem;
  font-size: 0.98rem;
  line-height: 1.7;
  color: var(--ink-500);
}

/* ---------------- Hero background ---------------- */
.hero-glow {
  position: absolute;
  top: -180px;
  left: 50%;
  width: 720px;
  height: 480px;
  transform: translateX(-50%);
  background: radial-gradient(closest-side, rgba(37, 99, 235, 0.22), rgba(79, 70, 229, 0.12), transparent 72%);
  filter: blur(20px);
  pointer-events: none;
}
.bg-grid {
  background-image:
    linear-gradient(to right, rgba(15, 23, 42, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(15, 23, 42, 0.04) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, #000 40%, transparent 78%);
  mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, #000 40%, transparent 78%);
}

/* ---------------- App mockup ---------------- */
.mockup-window {
  border-radius: 1rem;
  border: 1px solid var(--ink-200);
  background: #fff;
  overflow: hidden;
  box-shadow: 0 40px 80px -30px rgba(15, 23, 42, 0.4), 0 12px 30px -18px rgba(37, 99, 235, 0.25);
}
.mockup-bar {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.7rem 0.9rem;
  background: #fff;
  border-bottom: 1px solid var(--ink-100);
}
.mockup-dot { height: 0.7rem; width: 0.7rem; border-radius: 999px; }

.mock-nav {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.5rem;
  border-radius: 0.55rem;
  font-weight: 600;
  color: var(--ink-500);
  margin-bottom: 0.15rem;
}
.mock-nav--active { background: var(--brand-50); color: var(--brand-600); }

.mock-badge { font-weight: 700; font-size: 10px; }
.mock-badge--run { color: #059669; }
.mock-badge--queue { color: #d97706; }
.mock-badge--off { color: #94a3b8; }

/* ---------------- Stats ---------------- */
.stat-num {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  background: linear-gradient(120deg, var(--brand-600), var(--indigo-600));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat-label { margin-top: 0.25rem; font-size: 0.82rem; font-weight: 600; color: var(--ink-500); }

/* ---------------- Cards (solution / feature / step) ---------------- */
.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 2.75rem;
  width: 2.75rem;
  border-radius: 0.85rem;
}

.solution-card,
.feature-card,
.step-card {
  border-radius: 1.1rem;
  border: 1px solid var(--ink-200);
  background: #fff;
  padding: 1.5rem;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s;
}
.solution-card:hover,
.feature-card:hover,
.step-card:hover {
  transform: translateY(-4px);
  border-color: #bfdbfe;
  box-shadow: 0 22px 44px -24px rgba(37, 99, 235, 0.35);
}

.solution-title, .feature-title { margin-top: 1rem; font-size: 1.06rem; font-weight: 800; color: var(--ink-900); }
.solution-desc, .feature-desc { margin-top: 0.5rem; font-size: 0.9rem; line-height: 1.65; color: var(--ink-500); }

.step-card { position: relative; }
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 2rem;
  width: 2rem;
  border-radius: 999px;
  font-weight: 800;
  font-size: 0.85rem;
  color: var(--brand-700);
  background: var(--brand-50);
  border: 1px solid #dbeafe;
}
.step-title { margin-top: 0.9rem; font-size: 1rem; font-weight: 800; color: var(--ink-900); }
.step-desc { margin-top: 0.4rem; font-size: 0.86rem; line-height: 1.6; color: var(--ink-500); }

/* ---------------- Ticked list ---------------- */
.ticked { display: flex; align-items: flex-start; gap: 0.6rem; font-size: 0.92rem; color: var(--ink-700); }
.ticked > svg { margin-top: 0.15rem; flex-shrink: 0; color: #059669; }

/* ---------------- Script builder mockup ---------------- */
.script-panel { border-radius: 0.75rem; border: 1px solid var(--ink-200); background: #fff; padding: 0.7rem 0.8rem; }
.script-panel-head { display: flex; align-items: center; gap: 0.35rem; font-weight: 800; color: var(--ink-700); }
.script-input { border-radius: 0.5rem; background: var(--ink-100); padding: 0.4rem 0.55rem; color: var(--ink-500); }
.script-input b { color: var(--ink-900); }
.script-row { display: flex; align-items: center; justify-content: space-between; color: var(--ink-600); }
.script-pct { font-weight: 800; color: #059669; background: #ecfdf5; border-radius: 0.4rem; padding: 0.1rem 0.45rem; }
.script-pct--soft { color: #d97706; background: #fffbeb; }

.toggle {
  border-radius: 999px;
  padding: 0.3rem 0.7rem;
  font-weight: 700;
  color: var(--ink-500);
  background: var(--ink-100);
  border: 1px solid var(--ink-200);
}
.toggle--on { color: #fff; background: linear-gradient(135deg, var(--brand-500), var(--indigo-600)); border-color: transparent; }

/* ---------------- Video facade ---------------- */
.video-facade {
  position: relative;
  border-radius: 1.25rem;
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--ink-200);
  box-shadow: 0 40px 80px -30px rgba(15, 23, 42, 0.45);
}
.video-poster {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background:
    radial-gradient(120% 120% at 50% 0%, rgba(37, 99, 235, 0.35), transparent 60%),
    linear-gradient(135deg, #0f172a, #1e293b);
}
.video-play {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 4.5rem;
  width: 4.5rem;
  border-radius: 999px;
  color: var(--brand-600);
  background: #fff;
  box-shadow: 0 10px 30px -6px rgba(0, 0, 0, 0.45);
  transition: transform 0.2s;
}
.video-facade:hover .video-play { transform: scale(1.08); }
.video-facade iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

/* ---------------- Pricing ---------------- */
.price-card {
  position: relative;
  display: flex;
  flex-direction: column;
  border-radius: 1.25rem;
  border: 1px solid var(--ink-200);
  background: #fff;
  padding: 1.75rem;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.05);
  transition: transform 0.22s, box-shadow 0.22s;
}
.price-card:hover { transform: translateY(-4px); box-shadow: 0 26px 50px -28px rgba(37, 99, 235, 0.4); }
.price-card--popular {
  border: 2px solid var(--brand-500);
  box-shadow: 0 30px 60px -28px rgba(37, 99, 235, 0.55);
}
@media (min-width: 1024px) { .price-card--popular { transform: scale(1.04); } .price-card--popular:hover { transform: scale(1.04) translateY(-4px); } }

.price-badge {
  position: absolute;
  top: -0.85rem;
  left: 50%;
  transform: translateX(-50%);
  border-radius: 999px;
  padding: 0.3rem 0.9rem;
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #fff;
  background: linear-gradient(135deg, var(--brand-500), var(--indigo-600));
  box-shadow: 0 8px 18px -8px rgba(37, 99, 235, 0.8);
}
.price-name { font-size: 1.05rem; font-weight: 800; color: var(--ink-900); }
.price-tag { margin-top: 0.6rem; display: flex; flex-wrap: nowrap; align-items: baseline; gap: 0.3rem; white-space: nowrap; }
.price-amount { font-size: 2rem; font-weight: 900; letter-spacing: -0.03em; color: var(--ink-900); white-space: nowrap; }
.price-period { font-size: 0.85rem; font-weight: 600; color: var(--ink-400); white-space: nowrap; }
.price-note { margin-top: 0.6rem; font-size: 0.86rem; line-height: 1.6; color: var(--ink-500); min-height: 2.6rem; }
.price-list { margin-top: 1.1rem; display: flex; flex-direction: column; gap: 0.65rem; flex: 1; }
.price-list li { display: flex; align-items: flex-start; gap: 0.5rem; font-size: 0.9rem; color: var(--ink-700); }
.price-list li > svg { margin-top: 0.1rem; flex-shrink: 0; color: #059669; }

/* ---------------- FAQ ---------------- */
.faq-item { border-radius: 0.9rem; border: 1px solid var(--ink-200); background: #fff; overflow: hidden; }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  text-align: left;
  padding: 1.05rem 1.25rem;
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--ink-900);
  cursor: pointer;
}
.faq-chevron { color: var(--ink-400); transition: transform 0.3s ease; flex-shrink: 0; }
.faq-item.is-open .faq-chevron { transform: rotate(180deg); color: var(--brand-600); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.faq-a > p { padding: 0 1.25rem 1.15rem; font-size: 0.92rem; line-height: 1.7; color: var(--ink-500); }

/* ---------------- CTA / Contact ---------------- */
.cta-card {
  position: relative;
  overflow: hidden;
  border-radius: 1.75rem;
  padding: 2.5rem;
  color: #fff;
  background: linear-gradient(135deg, var(--brand-600), var(--indigo-600));
  box-shadow: 0 40px 80px -30px rgba(37, 99, 235, 0.7);
}
@media (min-width: 1024px) { .cta-card { padding: 3.5rem; } }
.cta-glow {
  position: absolute;
  top: -120px;
  right: -80px;
  height: 320px;
  width: 320px;
  border-radius: 999px;
  background: radial-gradient(closest-side, rgba(255, 255, 255, 0.4), transparent 70%);
  pointer-events: none;
}

.contact-info {
  border-radius: 1.25rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(8px);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.contact-row { display: flex; align-items: center; gap: 0.8rem; }
.contact-ic {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 2.4rem;
  width: 2.4rem;
  border-radius: 0.75rem;
  background: rgba(255, 255, 255, 0.16);
  flex-shrink: 0;
}
.contact-label { font-size: 0.7rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.05em; color: rgba(255, 255, 255, 0.7); }
.contact-value { font-size: 0.95rem; font-weight: 700; color: #fff; }

/* ---------------- Footer ---------------- */
.footer-head { font-size: 0.8rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-900); margin-bottom: 0.85rem; }
.footer-link { display: block; padding: 0.3rem 0; font-size: 0.9rem; color: var(--ink-500); transition: color 0.18s; }
.footer-link:hover { color: var(--brand-600); }

/* ---------------- Floating buttons ---------------- */
.float-zalo {
  position: fixed;
  right: 1.1rem;
  bottom: 1.1rem;
  z-index: 60;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 3.4rem;
  width: 3.4rem;
  border-radius: 1.1rem;
  box-shadow: 0 14px 30px -8px rgba(0, 104, 255, 0.75);
}
.float-zalo img { display: block; border-radius: inherit; }
.float-zalo-ping {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 2px solid rgba(0, 104, 255, 0.6);
}
.to-top {
  position: fixed;
  right: 1.1rem;
  bottom: 5rem;
  z-index: 60;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 2.9rem;
  width: 2.9rem;
  border-radius: 999px;
  color: var(--ink-700);
  background: #fff;
  border: 1px solid var(--ink-200);
  box-shadow: 0 10px 24px -12px rgba(15, 23, 42, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.25s, transform 0.25s, visibility 0.25s;
  cursor: pointer;
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { color: var(--brand-600); border-color: #bfdbfe; }

/* ============ Lightbox (phóng to ảnh giao diện) ============ */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: rgba(15, 23, 42, 0.82);
  backdrop-filter: blur(6px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}
.lightbox.is-open { opacity: 1; visibility: visible; }
.lightbox-img {
  max-width: 95vw;
  max-height: 90vh;
  width: auto;
  height: auto;
  border-radius: 0.75rem;
  box-shadow: 0 30px 70px -20px rgba(0, 0, 0, 0.7);
  transform: scale(0.96);
  transition: transform 0.2s ease;
  cursor: zoom-out;
}
.lightbox.is-open .lightbox-img { transform: scale(1); }
.lightbox-close {
  position: absolute;
  top: 1rem;
  right: 1.25rem;
  height: 2.75rem;
  width: 2.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  line-height: 1;
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.2s ease;
}
.lightbox-close:hover { background: rgba(255, 255, 255, 0.25); }