/* ===========================================================
   Bảo Vi Media — Stylesheet
   =========================================================== */

:root {
  /* Brand colors — swap these to rebrand */
  --color-primary: #2563EB;
  --color-primary-dark: #1D4ED8;
  --color-primary-light: #DBEAFE;
  --color-accent: #F97316;
  --color-accent-dark: #EA580C;
  --color-dark: #0F172A;
  --color-light: #F8FAFC;
  --color-gray: #64748B;
  --color-gray-light: #E2E8F0;
  --color-white: #FFFFFF;

  --font-base: 'Be Vietnam Pro', 'Inter', system-ui, sans-serif;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;

  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.10);
  --shadow-lg: 0 16px 40px rgba(15, 23, 42, 0.14);

  --transition: 0.25s ease;
  --header-height: 76px;
}

/* ===== Reset ===== */
* , *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: var(--header-height); }

body {
  font-family: var(--font-base);
  color: var(--color-dark);
  background: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
h1, h2, h3, h4, h5 { line-height: 1.25; font-weight: 700; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 10px 16px;
  z-index: 999;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
  white-space: nowrap;
}
.btn-accent {
  background: var(--color-accent);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn-accent:hover { background: var(--color-accent-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}
.btn-outline:hover { background: var(--color-primary); color: #fff; transform: translateY(-2px); }

.btn-lg { padding: 15px 30px; font-size: 1.05rem; }
.btn-sm { padding: 9px 18px; font-size: 0.88rem; }
.btn-block { width: 100%; }

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-height);
  display: flex;
  align-items: center;
  z-index: 200;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition), backdrop-filter var(--transition);
}
.site-header.scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-dark);
  flex-shrink: 0;
}
.logo-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  font-weight: 800;
  font-size: 1rem;
}
.logo-text strong { color: var(--color-primary); }

.main-nav ul {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-link {
  font-weight: 500;
  color: var(--color-dark);
  position: relative;
  padding: 6px 0;
  transition: color var(--transition);
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 2px;
  background: var(--color-accent);
  transition: width var(--transition);
}
.nav-link:hover, .nav-link.active { color: var(--color-primary); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }

.header-actions { display: flex; align-items: center; gap: 16px; }

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  z-index: 250;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-dark);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition);
  z-index: 190;
}
.nav-overlay.active { opacity: 1; visibility: visible; }

/* ===== Hero ===== */
.hero {
  padding: calc(var(--header-height) + 64px) 0 80px;
  background: linear-gradient(180deg, var(--color-primary-light) 0%, var(--color-white) 100%);
  overflow: hidden;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 48px;
}
.eyebrow {
  display: inline-block;
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  margin-bottom: 12px;
}
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  margin-bottom: 20px;
  color: var(--color-dark);
}
.text-accent { color: var(--color-accent); }
.hero-desc {
  font-size: 1.08rem;
  color: var(--color-gray);
  max-width: 540px;
  margin-bottom: 32px;
}
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-media { position: relative; display: flex; justify-content: center; }
.hero-blob {
  position: absolute;
  width: 420px;
  height: 420px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-primary));
  border-radius: 42% 58% 65% 35% / 45% 45% 55% 55%;
  opacity: 0.18;
  filter: blur(4px);
  animation: blobMove 8s ease-in-out infinite;
}
@keyframes blobMove {
  0%, 100% { border-radius: 42% 58% 65% 35% / 45% 45% 55% 55%; }
  50% { border-radius: 60% 40% 35% 65% / 55% 60% 40% 45%; }
}
.hero-media img { position: relative; z-index: 1; max-width: 420px; }

/* ===== Stats ===== */
.stats { padding: 56px 0; background: var(--color-dark); }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-card { color: #fff; }
.stat-number {
  display: block;
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  color: var(--color-accent);
  margin-bottom: 6px;
}
.stat-label { color: var(--color-gray-light); font-size: 0.95rem; }

/* ===== Sections ===== */
.section { padding: 96px 0; }
.alt-bg { background: var(--color-light); }

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}
.section-head h2 {
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  margin: 8px 0 12px;
}
.section-head p { color: var(--color-gray); font-size: 1.02rem; }

/* ===== Services ===== */
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.service-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-light);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.service-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 1.5rem;
  margin-bottom: 20px;
}
.service-card h3 { font-size: 1.2rem; margin-bottom: 10px; }
.service-card p { color: var(--color-gray); margin-bottom: 18px; }
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.92rem;
  transition: gap var(--transition), color var(--transition);
}
.card-link:hover { gap: 10px; color: var(--color-accent); }

/* ===== Care services ===== */
.care-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.care-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 28px 22px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.care-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.care-icon {
  width: 54px;
  height: 54px;
  margin: 0 auto 16px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  font-size: 1.3rem;
}
.care-card h4 { font-size: 1.05rem; margin-bottom: 8px; }
.care-card p { color: var(--color-gray); font-size: 0.92rem; }

/* ===== Testimonials ===== */
.testimonial-slider { max-width: 720px; margin: 0 auto; text-align: center; overflow: hidden; }
.testimonial-track {
  display: flex;
  transition: transform 0.5s ease;
}
.testimonial-slide { flex-shrink: 0; }
.testimonial-slide {
  min-width: 100%;
  padding: 40px 32px;
  background: var(--color-light);
  border-radius: var(--radius-lg);
}
.testimonial-slide p {
  font-size: 1.15rem;
  font-style: italic;
  color: var(--color-dark);
  margin-bottom: 20px;
}
.testimonial-slide footer { color: var(--color-primary); font-weight: 600; font-size: 0.92rem; }
.testimonial-slide footer strong { color: var(--color-dark); }

.testimonial-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-top: 28px;
}
.slider-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-white);
  border: 1px solid var(--color-gray-light);
  color: var(--color-primary);
  display: grid;
  place-items: center;
  transition: background var(--transition), color var(--transition), transform var(--transition);
}
.slider-btn:hover { background: var(--color-primary); color: #fff; transform: scale(1.05); }

.slider-dots { display: flex; gap: 8px; }
.slider-dots .dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--color-gray-light);
  transition: background var(--transition), transform var(--transition);
}
.slider-dots .dot.active { background: var(--color-accent); transform: scale(1.2); }

/* ===== Pricing ===== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}
.price-card {
  position: relative;
  background: var(--color-white);
  border: 1px solid var(--color-gray-light);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition);
}
.price-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.price-card.featured {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: scale(1.03);
}
.price-badge {
  position: absolute;
  top: -14px; left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 20px;
  white-space: nowrap;
}
.price-card h3 { font-size: 1.3rem; margin-bottom: 8px; }
.price-desc { color: var(--color-gray); font-size: 0.92rem; margin-bottom: 20px; min-height: 42px; }
.price-contact {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-primary);
  font-weight: 700;
  font-size: 1.02rem;
  margin-bottom: 24px;
}
.price-features { margin-bottom: 28px; flex-grow: 1; }
.price-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 0;
  color: var(--color-dark);
  font-size: 0.94rem;
  border-bottom: 1px dashed var(--color-gray-light);
}
.price-features li:last-child { border-bottom: none; }
.price-features i { color: var(--color-primary); margin-top: 3px; }

/* ===== CTA Banner ===== */
.cta-banner {
  background: linear-gradient(120deg, var(--color-primary), var(--color-primary-dark));
  padding: 72px 0;
}
.cta-inner { text-align: center; color: #fff; }
.cta-inner h2 { font-size: clamp(1.6rem, 3.5vw, 2.2rem); margin-bottom: 12px; }
.cta-inner p { color: var(--color-primary-light); margin-bottom: 28px; font-size: 1.05rem; }

/* ===== Footer ===== */
.site-footer { background: var(--color-dark); color: var(--color-gray-light); padding: 72px 0 0; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-logo { margin-bottom: 16px; color: #fff; }
.footer-about p { font-size: 0.92rem; line-height: 1.7; max-width: 380px; margin-bottom: 20px; }
.social-icons { display: flex; gap: 12px; }
.social-icons a {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  color: #fff;
  transition: background var(--transition), transform var(--transition);
}
.social-icons a:hover { background: var(--color-accent); transform: translateY(-3px); }

.footer-links h5, .footer-contact h5 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 18px;
}
.footer-links li, .footer-contact li { margin-bottom: 12px; }
.footer-links a, .footer-contact a {
  font-size: 0.92rem;
  color: var(--color-gray-light);
  transition: color var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.footer-links a:hover, .footer-contact a:hover { color: var(--color-accent); }

.footer-bottom { padding: 22px 0; text-align: center; font-size: 0.85rem; color: var(--color-gray); }

/* ===== Back to top ===== */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: grid;
  place-items: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--transition), transform var(--transition), background var(--transition), visibility var(--transition);
  z-index: 150;
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--color-accent); }

/* ===== Scroll reveal ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.in-view { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .hero-blob { transition: none; animation: none; opacity: 1; transform: none; }
}

/* ===========================================================
   Responsive
   =========================================================== */
@media (max-width: 1024px) {
  .service-grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .care-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-about { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-cta { justify-content: center; }
  .hero-media { order: -1; margin-bottom: 24px; }
  .hero-blob { width: 300px; height: 300px; }
  .hero-media img { max-width: 300px; }
  .service-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }
  .price-card.featured { transform: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
}

@media (max-width: 768px) {
  .main-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: min(320px, 82%);
    height: 100vh;
    background: var(--color-white);
    box-shadow: var(--shadow-lg);
    padding: calc(var(--header-height) + 24px) 28px 40px;
    transition: right var(--transition);
    z-index: 220;
  }
  .main-nav.open { right: 0; }
  .main-nav ul { flex-direction: column; align-items: flex-start; gap: 24px; }
  .header-actions .btn-sm { display: none; }
  .hamburger { display: flex; }
  .care-grid { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .section { padding: 64px 0; }
  .hero { padding: calc(var(--header-height) + 40px) 0 56px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn { width: 100%; }
}