:root {
  /* Colors */
  --background:        hsl(0, 0%, 100%);
  --foreground:        hsl(215, 28%, 11%);
  --card:              hsl(0, 0%, 100%);
  --primary:           hsl(224, 65%, 33%);    /* royal blue */
  --primary-fg:        hsl(0, 0%, 100%);
  --surface-cool:      hsl(195, 33%, 93%);
  --muted-fg:          hsl(215, 16%, 47%);
  --border:            hsl(195, 20%, 88%);
  --amber:             hsl(43, 96%, 50%);

  /* Typography */
  --font-display: 'Be Vietnam Pro', sans-serif;
  --font-body:    'Be Vietnam Pro', sans-serif;

  /* Radius */
  --radius: 0.75rem;

  /* Shadows */
  --shadow:    0 4px 20px rgba(0,0,0,0.07);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 106%; }
body {
  font-family: var(--font-body);
  background: var(--background);
  color: var(--foreground);
  line-height: 1.6;
  font-size: 1rem;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
h1,h2,h3,h4,h5,h6 { font-family: var(--font-display); }

/* ── Layout ── */
.container {
  max-width: 1152px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.section--white { background: var(--background); }
.section--cool  { background: var(--surface-cool); }

/* ── Typography helpers ── */
.label-tag {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--primary);
  display: block;
  margin-bottom: 0.75rem;
}
.section-title {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--foreground);
  line-height: 1.2;
  margin-top: 0.5rem;
}
.text-primary { color: var(--primary); }
.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius);
  cursor: pointer;
  border: none;
  transition: background 0.2s, transform 0.2s;
  white-space: nowrap;
}
.btn--primary {
  background: var(--primary);
  color: var(--primary-fg);
}
.btn--primary:hover { background: hsl(224, 65%, 26%); }
.btn--white {
  background: var(--background);
  color: var(--primary);
  font-size: 1rem;
  padding: 0.9rem 2rem;
  font-weight: 700;
}
.btn--white:hover { background: hsl(195, 33%, 93%); }

/* ── Headlight sweep effect (from index.css) ── */
@keyframes headlight-sweep {
  0%   { background-position: -200% center; }
  100% { background-position: 200% center; }
}
.headlight-hover {
  position: relative;
  overflow: hidden;
}
.headlight-hover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    transparent 40%,
    rgba(255,255,255,0.25) 45%,
    rgba(255,255,255,0.4) 50%,
    rgba(255,255,255,0.25) 55%,
    transparent 60%
  );
  background-size: 200% 100%;
  background-position: -200% center;
  pointer-events: none;
}
.headlight-hover:hover::after {
  animation: headlight-sweep 0.8s ease-out forwards;
}

/* ── Amber pulse ── */
@keyframes amber-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.3); }
}
.amber-pulse { animation: amber-pulse 2s ease-in-out infinite; }
.amber-dot {
  display: inline-block;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--amber);
  flex-shrink: 0;
}

/* ── Stars ── */
.stars {
  color: var(--amber);
  font-size: 0.7rem;
  letter-spacing: 1px;
}
.testi-stars {
  color: var(--amber);
  font-size: 0.9rem;
  letter-spacing: 2px;
  margin-bottom: 1rem;
}

/* ════════════════════════════
   HEADER
   ════════════════════════════ */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: hsla(195, 33%, 93%, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}
.header__logo { height: 40px; width: auto; }
.header__nav {
  display: flex;
  align-items: center;
  gap: 2rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--foreground);
}
.header__nav a { transition: color 0.2s; }
.header__nav a:hover { color: var(--primary); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--foreground);
  transition: all 0.3s;
}
.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 1rem;
  background: var(--surface-cool);
  padding: 1.5rem;
  border-bottom: 1px solid var(--border);
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--border);
  color: var(--foreground);
}
.mobile-menu a:hover { color: var(--primary); }

/* ════════════════════════════
   HERO
   ════════════════════════════ */
.hero {
  background: var(--background);
  padding: 4rem 0 6rem;
}
.hero__inner {
  display: flex;
  align-items: center;
  gap: 3rem;
}
.hero__content { flex: 1; }
.hero__title {
  font-size: clamp(2.4rem, 5vw, 3.75rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 1rem 0;
  color: var(--foreground);
}
.hero__subtitle {
  font-size: 1.1rem;
  color: var(--muted-fg);
  max-width: 440px;
  margin-bottom: 2.5rem;
}
.hero__availability {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted-fg);
  margin-bottom: 2rem;
}
.hero__booking {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}
.hero__input {
  flex: 1;
  min-width: 200px;
  padding: 1rem 1.25rem;
  font-size: 1rem;
  font-family: var(--font-body);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  background: var(--background);
  color: var(--foreground);
  outline: none;
  transition: border-color 0.2s;
}
.hero__trust{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:16px;
}

.hero__trust span{
  display:flex;
  align-items:center;
  gap:6px;
  padding:8px 14px;
  font-size:13px;
  font-weight:500;
  border-radius:999px;

  color:#1e3a8a;
  background:linear-gradient(135deg,#e0f2fe,#dbeafe);
  border:1px solid #93c5fd;

  box-shadow:0 4px 12px rgba(59,130,246,0.15);
  transition:all .25s ease;
}

.hero__trust span:hover{
  transform:translateY(-2px);
  box-shadow:0 8px 18px rgba(59,130,246,0.25);
}

.hero__input::placeholder { color: var(--muted-fg); }
.hero__input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px hsla(224,65%,33%,0.12); }
.hero__input:focus { border-color: var(--primary); }

.hero__service-title {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--foreground);
  margin-bottom: 1rem;
}
.service-cards { display: flex; gap: 0.8rem; flex-wrap: wrap; }
.service-card-sm {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.5rem 0.75rem 0.75rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 2px);
  cursor: pointer;
  transition: box-shadow 0.2s;
}
.service-card-sm:hover { box-shadow: var(--shadow-lg); }
.service-card-sm img {
  width: 56px; height: 56px;
  object-fit: contain;
  border-radius: 0.5rem;
}
.sc-label { font-size: 0.7rem; color: var(--muted-fg); }
.sc-title { font-family: var(--font-display); font-size: 0.875rem; font-weight: 700; color: var(--foreground); }

.hero__image { flex: 1; }
.hero__image img {
  max-height: 500px;
  width: 100%;
  object-fit: contain;
  margin: 0 auto;
}

/* ════════════════════════════
   ABOUT
   ════════════════════════════ */
.about { padding: 5rem 0; }
.about__inner {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}
.about__img { flex: 1; }
.about__img img {
  border-radius: calc(var(--radius)*2);
  box-shadow: var(--shadow-lg);
  width: 100%;
}
.about__content { flex: 1; }
.about__content .section-title { margin-bottom: 1rem; }
.about__content p {
  font-size: 0.95rem;
  color: var(--muted-fg);
  line-height: 1.75;
}

/* ════════════════════════════
   SERVICES DETAIL
   ════════════════════════════ */
.services { padding: 5rem 0; }
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.service-detail-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius)*2);
  padding: 2rem;
  transition: box-shadow 0.2s;
}
.service-detail-card:hover { box-shadow: var(--shadow-lg); }
.sdc-icon {
  width: 56px; height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-cool);
  border-radius: calc(var(--radius) + 2px);
  color: var(--primary);
  margin-bottom: 1.25rem;
}
.service-detail-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--foreground);
  margin-bottom: 0.75rem;
  line-height: 1.4;
}
.service-detail-card p {
  font-size: 0.875rem;
  color: var(--muted-fg);
  line-height: 1.7;
  margin-bottom: 1.25rem;
}
.sdc-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary);
  transition: opacity 0.2s;
}
.sdc-link:hover { opacity: 0.7; }

/* ════════════════════════════
   FEATURES
   ════════════════════════════ */
.features { padding: 5rem 0; }
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}
.feature-item { text-align: center; }
.feature-icon {
  width: 64px; height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  border-radius: calc(var(--radius) + 4px);
  color: white;
  margin: 0 auto 1rem;
}
.feature-item h3 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--foreground);
  margin-bottom: 0.5rem;
}
.feature-item p {
  font-size: 0.875rem;
  color: var(--muted-fg);
  line-height: 1.7;
}

/* ════════════════════════════
   TESTIMONIALS
   ════════════════════════════ */
.testimonials { padding: 5rem 0; }
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}
.testi-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius)*2);
  padding: 1.5rem;
}
.testi-card p {
  font-size: 0.875rem;
  color: var(--muted-fg);
  line-height: 1.75;
  margin-bottom: 1rem;
}
.testi-card strong {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--foreground);
}

/* ════════════════════════════
   CTA BANNER
   ════════════════════════════ */
.cta-banner { background: var(--primary); padding: 3.5rem 0; }
.cta-banner__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}
.cta-banner h2 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  color: white;
  margin-bottom: 0.5rem;
}
.cta-banner p { color: rgba(255,255,255,0.8); font-size: 0.95rem; }

/* ════════════════════════════
   FOOTER
   ════════════════════════════ */
.footer { padding: 3rem 0 0; }
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--border);
}
.footer__logo { height: 40px; width: auto; margin-bottom: 1rem; }
.footer__company {
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--foreground);
  margin-bottom: 0.75rem;
}
.footer__desc {
  font-size: 0.875rem;
  color: var(--muted-fg);
  line-height: 1.7;
  margin-bottom: 1rem;
}
.footer__contact-list { display: flex; flex-direction: column; gap: 0.5rem; }
.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--muted-fg);
  line-height: 1.5;
}
.footer__contact-item svg { flex-shrink: 0; margin-top: 3px; }

.footer__col h4 {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--foreground);
  margin-bottom: 0.75rem;
}
.footer__col ul { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }
.footer__col ul a {
  font-size: 0.875rem;
  color: var(--muted-fg);
  transition: color 0.2s;
}
.footer__col ul a:hover { color: var(--foreground); }

.footer__bottom {
  padding: 1.5rem;
  text-align: center;
  font-size: 0.75rem;
  color: var(--muted-fg);
}

/* ════════════════════════════
   FLOATING BUTTONS
   ════════════════════════════ */
.float-btns {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 99;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}
.float-btn {
  width: 48px; height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(0,0,0,0.2);
  cursor: pointer;
  border: none;
  transition: transform 0.2s;
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  color: white;
  text-decoration: none;
}
.float-btn:hover { transform: scale(1.1); }
.float-btn--zalo    { background: #0068ff; }
.float-btn--messenger { background: #0084ff; }
.float-btn--phone   { background: #22c55e; }
.float-btn--top     { background: var(--primary); }

/* ════════════════════════════
   ANIMATIONS
   ════════════════════════════ */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  animation: fadeUp 0.5s ease-out forwards;
}
.fade-right {
  opacity: 0;
  transform: translateX(40px);
  animation: fadeRight 0.7s ease-out forwards;
  animation-delay: 0.3s;
}
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }

@keyframes fadeUp   { to { opacity: 1; transform: translateY(0); } }
@keyframes fadeRight { to { opacity: 1; transform: translateX(0); } }

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}
.reveal.visible { opacity: 1; transform: none; }
.reveal.delay-1 { transition-delay: 0.1s; }
.reveal.delay-2 { transition-delay: 0.2s; }
.reveal.delay-3 { transition-delay: 0.3s; }

/* ════════════════════════════
   RESPONSIVE
   ════════════════════════════ */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .header__nav, .header > .container > .btn { display: none; }
  .hamburger { display: flex; }

  .hero__inner { flex-direction: column; }
  .hero__image { order: -1; }
  .hero__image img { max-height: 300px; }
  .hero__booking { flex-direction: column; }
  .hero__input { min-width: unset; }

  .about__inner { flex-direction: column; }
  .services-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }

  .cta-banner__inner { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .features-grid { grid-template-columns: 1fr; }
  .service-cards { flex-direction: column; }
}