/* =====================================================================
   MAIN — Layout, hero, components
   ===================================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
}
body {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: var(--fs-base);
  line-height: 1.72;
  color: var(--color-white);
  background: var(--color-black);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
body.has-mobile-bar { padding-bottom: var(--mobile-bar-h); }
img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
:focus-visible { outline: 2px solid var(--color-red-soft); outline-offset: 3px; border-radius: 4px; }
::selection { background: var(--color-red); color: var(--color-white-warm); }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 16px 28px;
  border-radius: var(--radius-pill);
  font-size: 0.82rem; font-weight: 700;
  letter-spacing: 1.5px; text-transform: uppercase;
  transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
  white-space: nowrap;
}
.btn-primary {
  background: var(--grad-red);
  color: var(--color-white-warm);
  box-shadow: var(--shadow-red);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: var(--shadow-red-glow); }
.btn-ghost {
  background: var(--glass);
  color: var(--color-white-warm);
  border: 1px solid var(--glass-border-strong);
  backdrop-filter: blur(10px);
}
.btn-ghost:hover {
  background: var(--glass-2);
  border-color: var(--color-red-soft);
  transform: translateY(-2px);
}
.btn-lg { padding: 18px 36px; font-size: 0.88rem; }
.btn-arrow::after {
  content: '→';
  font-size: 1.1rem;
  transition: transform var(--dur-fast) var(--ease);
}
.btn:hover.btn-arrow::after { transform: translateX(4px); }

/* Sections */
.section { padding: var(--space-3xl) var(--gutter); position: relative; }
.section-dark { background: var(--color-black); }
.section-darker { background: var(--color-black-2); }
.section-mid { background: var(--color-black-3); }

.section-head {
  max-width: var(--maxw); margin: 0 auto var(--space-xl);
  text-align: center;
}
.section-eyebrow {
  display: inline-block;
  font-size: var(--fs-xs); font-weight: 700;
  letter-spacing: var(--tracking-xwide); text-transform: uppercase;
  color: var(--color-red-bright);
  padding: 6px 18px;
  border: 1px solid var(--color-red);
  border-radius: var(--radius-pill);
  background: var(--glass-red);
  margin-bottom: var(--space-md);
}
.section-title {
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  line-height: 1.08;
  letter-spacing: 1px;
  color: var(--color-white-warm);
  margin-bottom: var(--space-sm);
  font-weight: 800;
}
.section-title .accent {
  color: var(--color-red-bright);
  font-style: italic;
  font-weight: 600;
}
.section-lede {
  color: var(--color-white-dim);
  font-size: var(--fs-md);
  max-width: 64ch;
  margin: 0 auto;
  line-height: 1.75;
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--color-black);
}
.hero-media {
  position: absolute; inset: 0; z-index: 0;
  overflow: hidden;
}
.hero-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  animation: slowZoom 18s var(--ease-soft) infinite alternate;
}
.hero-overlay {
  position: absolute; inset: 0; z-index: 1;
  background:
    radial-gradient(ellipse at 28% 28%, rgba(159, 42, 60, 0.42) 0%, transparent 52%),
    radial-gradient(ellipse at 80% 60%, rgba(var(--red-rgb), 0.22) 0%, transparent 45%),
    linear-gradient(180deg, rgba(15, 15, 16, 0.55) 0%, rgba(15, 15, 16, 0.65) 50%, rgba(15, 15, 16, 0.95) 100%);
  pointer-events: none;
}
.hero-grain {
  position: absolute; inset: 0; z-index: 2;
  background-image: radial-gradient(circle, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 4px 4px;
  pointer-events: none;
  mix-blend-mode: overlay;
  opacity: 0.45;
}
.hero-inner {
  position: relative; z-index: 3;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: calc(var(--nav-h) + var(--space-xl)) var(--gutter) var(--space-xl);
  width: 100%;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--glass);
  border: 1px solid var(--glass-border-strong);
  backdrop-filter: blur(14px);
  padding: 9px 20px;
  border-radius: var(--radius-pill);
  color: var(--color-white-warm);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  margin-bottom: var(--space-md);
  animation: heroFadeIn 1s var(--ease) 0.15s both;
}
.hero-eyebrow .live-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--color-red-bright);
  animation: liveDot 1.8s var(--ease) infinite;
}
.hero-title {
  font-family: var(--font-display);
  font-size: var(--fs-hero);
  line-height: 1.02;
  font-weight: 800;
  color: var(--color-white-warm);
  margin-bottom: var(--space-sm);
  max-width: 16ch;
  animation: heroEnter 1.2s var(--ease-snap) 0.3s both;
}
.hero-title .accent { color: var(--color-red-bright); }
.hero-tagline {
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  color: var(--color-white-dim);
  max-width: 52ch;
  margin-bottom: var(--space-md);
  line-height: 1.65;
  animation: heroEnter 1.2s var(--ease-snap) 0.5s both;
}
.hero-tagline strong { color: var(--color-white-warm); font-weight: 700; }

/* Price badge strip in hero */
.hero-price-badge {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: linear-gradient(135deg, rgba(var(--red-rgb), 0.35), rgba(var(--red-soft-rgb), 0.18));
  border: 1px solid rgba(var(--red-soft-rgb), 0.5);
  box-shadow: var(--shadow-red-glow);
  padding: 12px 22px;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  animation: heroEnter 1.2s var(--ease-snap) 0.45s both;
}
.hero-price-badge__icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-xs);
  background: var(--grad-red);
  display: grid;
  place-items: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.hero-price-badge__text strong {
  display: block;
  color: var(--color-red-bright);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.5px;
}
.hero-price-badge__text span {
  font-size: 0.82rem;
  color: var(--color-white-dim);
}

.hero-actions {
  display: flex; flex-wrap: wrap; gap: 12px;
  margin-bottom: var(--space-lg);
  animation: heroEnter 1.2s var(--ease-snap) 0.65s both;
}

/* Hero 3 pillars — Thông tin · Giá · Liên hệ */
.hero-pillars {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: var(--space-lg);
  animation: heroEnter 1.2s var(--ease-snap) 0.8s both;
}
.hero-pillar {
  background: rgba(23, 23, 23, 0.78);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: border-color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
.hero-pillar:hover {
  border-color: var(--color-red-soft);
  transform: translateY(-4px);
  box-shadow: var(--shadow-red);
}
.hero-pillar--price {
  border-color: rgba(var(--red-soft-rgb), 0.45);
  background: linear-gradient(145deg, rgba(var(--red-rgb), 0.32), rgba(23, 23, 23, 0.88));
  box-shadow: 0 0 40px rgba(var(--red-soft-rgb), 0.18);
}
.hero-pillar__label {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-red-bright);
  margin-bottom: 8px;
}
.hero-pillar h3 {
  font-size: 1rem;
  font-weight: 800;
  color: var(--color-white-warm);
  margin-bottom: 6px;
  line-height: 1.3;
}
.hero-pillar p {
  font-size: 0.82rem;
  color: var(--color-white-dim);
  line-height: 1.5;
}
.hero-pillar a {
  display: inline-flex;
  margin-top: 10px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-red-bright);
  letter-spacing: 1px;
  text-transform: uppercase;
}
.hero-pillar a:hover { text-decoration: underline; }

/* Hero contact strip */
.hero-contact-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-black-2);
  border: 1px solid var(--glass-border-strong);
  border-radius: var(--radius-lg);
  animation: heroFadeIn 1.4s var(--ease) 1s both;
}
.hero-hotline {
  display: flex;
  align-items: center;
  gap: 14px;
}
.hero-hotline__ring {
  width: 52px; height: 52px;
  border-radius: 50%;
  background: var(--grad-red);
  display: grid;
  place-items: center;
  animation: redPulse 2.2s var(--ease) infinite;
  flex-shrink: 0;
}
.hero-hotline__ring svg { width: 22px; height: 22px; }
.hero-hotline__num {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px;
  font-size: clamp(1.2rem, 2.8vw, 1.75rem);
  font-weight: 800;
  color: var(--color-white-warm);
  letter-spacing: 1px;
}
.hero-hotline__num a:hover { color: var(--color-red-soft); }
.hero-hotline__sub {
  font-size: 0.8rem;
  color: var(--color-white-mute);
}
.hero-contact-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-left: auto;
}
.contact-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: var(--radius-pill);
  background: var(--glass);
  border: 1px solid var(--glass-border);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  transition: background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.contact-chip:hover {
  background: var(--glass-red);
  border-color: var(--color-red-soft);
}
.contact-chip--zalo { border-color: rgba(0, 104, 255, 0.4); }
.contact-chip--messenger { border-color: rgba(0, 132, 255, 0.4); }

/* Highlight cards (services) */
.highlight-cards-grid {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}
.highlight-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 280px;
  display: block;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.highlight-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.highlight-card__bg {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform 0.7s var(--ease-soft);
}
.highlight-card:hover .highlight-card__bg { transform: scale(1.08); }
.highlight-card__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 20%, rgba(10, 10, 11, 0.92) 100%);
}
.highlight-card__content {
  position: relative; z-index: 2;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-md);
}
.highlight-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  background: var(--glass-red);
  border: 1px solid var(--glass-border-strong);
  display: grid;
  place-items: center;
  margin-bottom: 12px;
}
.highlight-icon svg { width: 22px; height: 22px; stroke: var(--color-red-soft); }
.highlight-card h3 {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--color-white-warm);
  margin-bottom: 6px;
}
.highlight-card p {
  font-size: 0.85rem;
  color: var(--color-white-dim);
  line-height: 1.55;
}

/* Stats row */
.intro-stat-row {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}
.intro-stat-card {
  background: var(--color-black-3);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  text-align: center;
  transition: border-color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}
.intro-stat-card:hover {
  border-color: var(--color-red-soft);
  transform: translateY(-4px);
}
.intro-stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--color-red-bright);
  line-height: 1.1;
  margin-bottom: 6px;
}
.intro-stat-label {
  font-size: 0.82rem;
  color: var(--color-white-dim);
  line-height: 1.4;
}

/* Testimonials */
.testimonials-track-wrap {
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.testimonials-track {
  display: flex;
  gap: 20px;
  width: max-content;
  animation: marquee 45s linear infinite;
}
.testimonials-track:hover { animation-play-state: paused; }
.testimonial {
  flex: 0 0 340px;
  background: var(--color-black-3);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
}
.testimonial-stars { color: var(--color-red-bright); font-size: 0.9rem; margin-bottom: 12px; }
.testimonial-quote {
  font-size: 0.95rem;
  color: var(--color-white-dim);
  line-height: 1.65;
  margin-bottom: var(--space-md);
}
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.testimonial-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--grad-red);
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 1rem;
}
.testimonial-name { font-weight: 700; color: var(--color-white-warm); font-size: 0.9rem; }
.testimonial-role { font-size: 0.78rem; color: var(--color-white-mute); }

/* CTA band */
.cta-band {
  position: relative;
  overflow: hidden;
  background: var(--color-black-2);
  border-top: 1px solid var(--glass-border);
  border-bottom: 1px solid var(--glass-border);
}
.cta-band__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: var(--space-2xl) var(--gutter);
  text-align: center;
}
.cta-band__title {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--color-white-warm);
  margin-bottom: var(--space-sm);
}
.cta-band__title .accent { color: var(--color-red-bright); font-style: italic; }
.cta-band__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  margin-top: var(--space-md);
}

/* Float stack */
.float-stack {
  position: fixed;
  bottom: 24px;
  right: 22px;
  z-index: 900;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.float-btn {
  width: 54px; height: 54px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--color-white-warm);
  box-shadow: var(--shadow-md);
  position: relative;
  transition: transform var(--dur-fast) var(--ease);
}
.float-btn:hover { transform: scale(1.1); }
.float-btn svg { width: 22px; height: 22px; }
.float-zalo { background: #0068ff; }
.float-messenger { background: linear-gradient(135deg, #00b2ff, #006aff); }
.float-call {
  background: var(--grad-red);
  animation: redPulse 2.2s var(--ease) infinite;
}
.float-quote { background: var(--color-black-3); border: 2px solid var(--color-red-soft); }
.float-tip {
  position: absolute;
  right: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--color-black-2);
  color: var(--color-white-warm);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 7px 12px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--glass-border);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-fast) var(--ease);
}
.float-btn:hover .float-tip { opacity: 1; }