* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  background: radial-gradient(circle at top left, #f4fcff 0%, #e9f8ff 35%, #fbf8ff 100%);
  color: #1e2a3a;
  line-height: 1.7;
  min-height: 100vh;
}

img,
picture,
video,
iframe {
  max-width: 100%;
  height: auto;
  display: block;
}

/* HEADER */

.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 18px;
  padding: 14px 20px;
  background: rgba(255, 255, 255, 0.92);
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(13, 94, 107, 0.12);
}

.site-nav a {
  color: #0c4b5d;
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: #12ada0;
}

.section--compact {
  padding-top: 40px;
  padding-bottom: 40px;
}

header {
  background: linear-gradient(135deg, rgba(12, 56, 83, 0.55), rgba(38, 146, 151, 0.45)),
    url('assets/images/gioithieu01.jpg') center/cover no-repeat;
  color: white;
  text-align: center;
  padding: 80px 20px;
  position: relative;
  overflow: hidden;
}

.hero-copy {
  max-width: 820px;
  margin: 0 auto;
}

.hero-copy p {
  font-size: 20px;
  opacity: 0.95;
  max-width: 720px;
  margin: 0 auto 28px;
  text-shadow: 0 4px 18px rgba(0, 0, 0, 0.14);
}

.hero-pill-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 26px;
}

.hero-pill {
  background: rgba(255, 255, 255, 0.18);
  color: white;
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* subtle highlight area on top-right */
header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, rgba(255, 255, 255, 0.25), transparent 36%);
  pointer-events: none;
  z-index: 0;
}

/* consistent overlay to dim the background image on all devices */
header::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11, 105, 127, 0.85), rgba(52, 195, 177, 0.65));
  z-index: 1;
  pointer-events: none;
}

/* keep header children above the overlay */
header > * {
  position: relative;
  z-index: 2;
}

.logo {
  width: 130px;
  display: block;
  margin: 0 auto 20px;
}

header h1 {
  font-size: 56px;
  margin-bottom: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-shadow: 0 12px 30px rgba(0, 0, 0, 0.18);
}

header p {
  font-size: 20px;
  opacity: 0.95;
  max-width: 680px;
  margin: auto;
  text-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

/* HERO SHOWCASE */

.hero-showcase {
  max-width: 1100px;
  margin: 40px auto;
  padding: 40px 24px;
  background: linear-gradient(180deg, rgba(255,255,255,0.98) 0%, rgba(229, 249, 255, 0.95) 100%);
  border: 1px solid rgba(3, 118, 134, 0.12);
  border-radius: 36px;
  box-shadow: 0 24px 50px rgba(11, 100, 115, 0.08);
}

.hero-showcase-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(260px, 1fr));
  gap: 22px;
}

.hero-image-card {
  background: white;
  border-radius: 28px;
  overflow: hidden;
  box-shadow: 0 18px 40px rgba(18, 81, 92, 0.08);
  border: 1px solid rgba(12, 116, 129, 0.1);
}

.hero-image-card img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  display: block;
}

.hero-image-copy {
  padding: 24px;
}

.hero-image-title {
  margin-bottom: 12px;
  font-size: 1.2rem;
  font-weight: 700;
  color: #0f4f61;
}

.hero-image-copy p {
  color: #3b545f;
  line-height: 1.75;
}

.hero-highlight {
  margin-top: 30px;
  text-align: center;
  padding: 24px 18px;
  background: rgba(0, 201, 167, 0.08);
  border-left: 4px solid #00b194;
  border-radius: 24px;
  color: #13434d;
  font-weight: 600;
  line-height: 1.7;
}

@media (max-width: 860px) {
  .hero-showcase-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .hero-pill-row {
    justify-content: center;
  }
}

/* BUTTON */

.btn {
  display: inline-block;
  margin-top: 22px;
  padding: 14px 30px;
  background: linear-gradient(135deg, #ff8d5b, #ffb96c);
  color: white;
  text-decoration: none;
  border-radius: 999px;
  box-shadow: 0 18px 30px rgba(255, 137, 88, 0.25);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 24px 40px rgba(255, 137, 88, 0.28);
}

/* SECTION */

section {
  max-width: 1100px;
  margin: auto;
  padding: 60px 20px;
}

section:nth-of-type(even) {
  background: rgba(0, 201, 167, 0.06);
  border-radius: 40px;
}

h2 {
  text-align: center;
  margin-bottom: 40px;
  color: #0f4357;
  letter-spacing: 0.05em;
}

/* SERVICES */

.services {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.card {
  background: linear-gradient(180deg, #ffffff 0%, #effbff 100%);
  padding: 28px;
  border-radius: 28px;
  text-align: center;
  box-shadow: 0 16px 40px rgba(20, 92, 119, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid rgba(29, 113, 130, 0.1);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 48px rgba(20, 92, 119, 0.14);
}

.card h3 {
  margin-bottom: 12px;
  color: #0b5569;
}

.card p {
  color: #3b5564;
}

/* BENEFITS */

.benefits {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.benefit {
  flex: 1 1 300px;
  background: linear-gradient(135deg, #e7fffa, #f7fbff);
  padding: 24px;
  border-radius: 18px;
  border-left: 5px solid #00c7a6;
  color: #103841;
  box-shadow: 0 12px 25px rgba(8, 76, 83, 0.06);
}

.blog-preview {
  max-width: 1100px;
  margin: 40px auto;
  padding: 40px 24px;
  background: linear-gradient(180deg, rgba(255,255,255,0.95) 0%, rgba(227,250,255,0.95) 100%);
  border: 1px solid rgba(2, 131, 135, 0.14);
  border-radius: 40px;
  box-shadow: 0 28px 60px rgba(12, 67, 87, 0.08);
}

.blog-preview h2 {
  text-align: center;
  margin-bottom: 12px;
}

.blog-intro {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
  color: #2b4f5f;
  font-size: 1rem;
  line-height: 1.8;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 22px;
  margin-top: 32px;
}

.blog-card {
  position: relative;
  background: white;
  border-radius: 28px;
  padding: 28px;
  min-height: 250px;
  box-shadow: 0 18px 35px rgba(11, 75, 92, 0.09);
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
  border: 1px solid rgba(36, 110, 126, 0.08);
}

.blog-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 30px 55px rgba(11, 75, 92, 0.18);
  border-color: rgba(0, 179, 153, 0.22);
}

.blog-card a {
  color: inherit;
  text-decoration: none;
  display: block;
  min-height: 100%;
}

.blog-card-badge {
  display: inline-block;
  margin-bottom: 18px;
  padding: 8px 14px;
  border-radius: 999px;
  background: linear-gradient(135deg, #1fb0a8, #52d6c4);
  color: white;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.blog-card h3 {
  margin-bottom: 14px;
  color: #0b5569;
  font-size: 1.25rem;
}

.blog-card p {
  color: #3b5564;
  line-height: 1.75;
}

.blog-link {
  text-align: center;
  margin-top: 30px;
}

.blog-link .btn {
  padding: 16px 36px;
  border-radius: 999px;
  background: linear-gradient(135deg, #1db8aa, #0f8aa5);
}

.seo-content {
  background: linear-gradient(180deg, #ffffff 0%, #eaf9ff 100%);
  border: 1px solid rgba(0, 172, 135, 0.16);
  border-radius: 36px;
  padding: 42px 40px;
  margin: 40px auto;
  max-width: 980px;
  color: #17313c;
  box-shadow: 0 24px 50px rgba(4, 113, 117, 0.08);
}

.seo-content h2,
.seo-content h3 {
  color: #0a4f62;
  margin-bottom: 18px;
}

.seo-content p {
  margin-bottom: 18px;
  font-size: 1rem;
  color: #2d4854;
  line-height: 1.8;
}

.seo-highlight {
  position: relative;
  overflow: hidden;
}

.seo-label {
  display: inline-block;
  margin-bottom: 22px;
  padding: 10px 16px;
  border-radius: 999px;
  background: linear-gradient(135deg, #00c9a7, #2bd3ff);
  color: white;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 12px;
}

.seo-lead {
  font-size: 1.08rem;
  font-weight: 600;
  color: #0f3f54;
  margin-bottom: 24px;
}

.seo-points {
  margin: 18px 0 22px;
  padding: 22px 22px 18px;
  background: rgba(0, 201, 167, 0.08);
  border-left: 4px solid #00b194;
  border-radius: 20px;
}

.seo-points p {
  margin-bottom: 10px;
  font-weight: 700;
}

.seo-points ul {
  margin-left: 18px;
  color: #214e5d;
  list-style: disc inside;
}

.seo-points li {
  margin-bottom: 10px;
}

/* FEEDBACK */

.feedback-section {
  text-align: center;
}

.feedback-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin-top: 30px;
}

.feedback-card {
  background: linear-gradient(180deg, #f7faff 0%, #e4fcff 100%);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 12px 30px rgba(1, 95, 119, 0.12);
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid rgba(0, 183, 160, 0.12);
}

.feedback-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(1, 95, 119, 0.18);
}

.feedback-card img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  display: block;
}

/* POPUP */

.popup {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  padding: 20px;
}

.popup img {
  max-width: 90%;
  max-height: 90%;
  border-radius: 20px;
}

/* FLOAT CONTACT */

.contact-fixed {
  position: fixed;
  bottom: 14px;
  right: 8px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
  z-index: 9999;
  padding: 0 4px 4px 0;
}

.contact-fixed a {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.18);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.contact-fixed a:hover {
  transform: scale(1.08);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.24);
}

/* Contact prompt pill */
.contact-prompt {
  background: linear-gradient(135deg, #00c9a7 0%, #00a3ff 100%);
  color: #ffffff;
  padding: 12px 16px;
  border-radius: 28px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.01em;
  box-shadow: 0 16px 36px rgba(0, 70, 110, 0.18);
  max-width: 240px;
  text-align: left;
  line-height: 1.35;
  position: relative;
  overflow: visible;
  animation: slideIn 420ms cubic-bezier(.2,.9,.2,1) both;
  white-space: normal;
}

.contact-prompt::after {
  content: '';
  width: 12px;
  height: 12px;
  background: #ffffff;
  position: absolute;
  right: 18px;
  bottom: -6px;
  transform: rotate(45deg);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.contact-prompt:hover {
  transform: translateX(-5px);
}

@media (max-width: 700px) {
  .contact-fixed {
    bottom: 12px;
    right: 6px;
    gap: 8px;
  }

  .contact-fixed a {
    width: 44px;
    height: 44px;
  }

  .contact-prompt {
    max-width: 200px;
    font-size: 12px;
    padding: 10px 14px;
    line-height: 1.4;
    box-shadow: 0 14px 30px rgba(0, 70, 110, 0.18);
  }

  .contact-prompt::after {
    right: 16px;
    bottom: -6px;
  }
}

@keyframes slideIn {
  from { transform: translateX(18px) scale(.98); opacity: 0 }
  to   { transform: translateX(0) scale(1); opacity: 1 }
}

.zalo {
  background: linear-gradient(135deg, #00a8ff, #0066cc);
}

.fb {
  background: linear-gradient(135deg, #4267b2, #2a4aa0);
}

.phone {
  background: linear-gradient(135deg, #00c853, #00b27a);
}

footer {
  background: linear-gradient(135deg, #0d5d72, #175c8f);
  color: white;
  padding: 50px 20px;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) minmax(320px, 1fr);
  gap: 32px;
  align-items: start;
  max-width: 1100px;
  margin: 0 auto;
}

.footer-contact {
  text-align: left;
}

.footer-title {
  font-size: 1.45rem;
  font-weight: 700;
  margin-bottom: 18px;
}

footer p {
  margin: 10px 0;
  line-height: 1.7;
}

footer i {
  margin-right: 8px;
}

footer a {
  color: #fff;
  text-decoration: none;
}

footer .map-link {
  margin-top: 12px;
}

footer .map-link a {
  color: #fff;
  text-decoration: underline;
}

.footer-note {
  margin-top: 32px;
  opacity: 0.85;
  text-align: center;
}

.map-embed-wrap {
  margin-top: 12px;
  max-width: 360px;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 6px 18px rgba(2,8,23,0.25);
}

.map-embed {
  width: 100%;
  height: 180px;
  border: 0;
  display: block;
}

@media (max-width: 600px) {
  .map-embed {
    height: 160px;
  }
  .map-embed-wrap {
    max-width: 100%;
  }
}

/* BOOKING */

.booking {
  padding: 70px 24px;
  text-align: center;
  background: radial-gradient(circle at top center, rgba(6, 126, 168, 0.14), rgba(255, 255, 255, 0.95));
  border: 1px solid rgba(0, 169, 200, 0.18);
  border-radius: 36px;
  box-shadow: 0 28px 60px rgba(9, 105, 128, 0.12);
  max-width: 980px;
  margin: 60px auto;
}

.booking h2 {
  font-size: 44px;
  margin-bottom: 18px;
  background: linear-gradient(120deg, #0e5c7a, #1db8aa, #15a5e9);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 0.04em;
  font-weight: 900;
  line-height: 1.02;
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
}

.booking h2::after {
  content: '';
  display: block;
  width: 140px;
  height: 6px;
  margin: 20px auto 0;
  border-radius: 999px;
  background: linear-gradient(90deg, #1db8aa, #00c9a7, #15a5e9);
}

.booking .section-subtitle {
  max-width: 700px;
  margin: 0 auto 36px;
  font-size: 1rem;
  color: #15556a;
  line-height: 1.8;
}

.booking form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  max-width: 920px;
  margin: auto;
}

.booking input,
.booking select,
.booking textarea {
  width: 100%;
    padding: 16px 20px;
    border: 1px solid rgba(0, 164, 193, 0.18);
    border-radius: 18px;
    font-size: 16px;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.8), 0 16px 35px rgba(13, 93, 109, 0.08);
    outline: none;
    transition: 0.25s ease, transform 0.25s ease;
.booking textarea {
  position: relative;
}

.booking textarea {
  min-height: 120px;
  resize: vertical;
}

.service-description {
  grid-column: 1 / -1;
  margin-top: 6px;
  padding: 12px 16px;
  background: rgba(0, 201, 167, 0.06);
  border-left: 4px solid #00b194;
  color: #114b4f;
  border-radius: 12px;
  font-weight: 600;
  line-height: 1.6;
}

 .booking input[type="date"],
 .booking input[type="time"] {
   cursor: pointer;
 }

 .date-field {
   position: relative;
 }

 .date-field .date-placeholder {
   position: absolute;
   left: 18px;
   top: 50%;
   transform: translateY(-50%);
   color: rgba(12, 58, 81, 0.75);
   pointer-events: none;
   font-size: 16px;
 }

 .date-field.has-value .date-placeholder {
   display: none;
 }

 .booking input[type="date"] {
   color: #1e2a3a;
 }

.booking input[type="date"]::-webkit-calendar-picker-indicator {
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: rgba(12, 58, 81, 0.75);
  opacity: 0.9;
}

.booking input:focus,
.booking select:focus,
.booking textarea:focus {
  border-color: #1db8aa;
  box-shadow: 0 0 0 5px rgba(29, 184, 170, 0.16);
  transform: translateY(-1px);
}

.booking button {
  grid-column: 1 / -1;
  width: 100%;
  padding: 18px 24px;
  border: none;
  border-radius: 32px;
  background: linear-gradient(135deg, #1db8aa, #129ceb 100%);
  color: white;
  font-size: 17px;
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background-position 0.25s ease;
  background-size: 220% 100%;
  background-position: left;
  box-shadow: 0 18px 40px rgba(18, 156, 222, 0.22);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  overflow: hidden;
  position: relative;
}

.booking button:hover {
  transform: translateY(-4px);
  opacity: 1;
  background-position: right;
  box-shadow: 0 22px 46px rgba(18, 156, 222, 0.26);
}

.booking button.pulse {
  animation: pulse-button 1.2s ease-in-out;
}

@keyframes pulse-button {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.03);
  }
}

/* MOBILE */

@media (max-width: 980px) {
  header {
    padding: 60px 18px;
    background: linear-gradient(135deg, rgba(11, 105, 127, 0.85), rgba(52, 195, 177, 0.65)), url('assets/images/thumnail1.jpg') center/cover no-repeat;
    background-blend-mode: overlay;
    min-height: 420px;
  }

  header h1 {
    font-size: 36px;
    letter-spacing: 0.05em;
  }

  header p {
    font-size: 17px;
    max-width: 100%;
    padding: 0 8px;
  }

  section {
    padding: 36px 18px;
  }

  .site-nav {
    justify-content: space-around;
    padding: 12px 14px;
  }

  .services,
  .blog-grid,
  .feedback-grid,
  .footer-grid,
  .booking form,
  .benefits {
    grid-template-columns: 1fr;
  }

  .benefits {
    display: grid;
  }

  .blog-card,
  .card,
  .feedback-card,
  .seo-content,
  .booking,
  .blog-preview,
  .cta-section,
  footer {
    margin-left: 0;
    margin-right: 0;
  }

  header {
    background: linear-gradient(135deg, rgba(11, 105, 127, 0.70), rgba(52, 195, 177, 0.60)), url('assets/images/thumnail1.jpg') center/cover no-repeat;
    background-attachment: scroll;
    background-blend-mode: overlay;
  }

  .card,
  .blog-card,
  .feedback-card,
  .seo-content,
  .booking,
  .map-embed-wrap {
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
  }

  .cta-section {
    padding: 32px 18px;
  }

  .cta-section h2 {
    font-size: 28px;
  }

  .feedback-card img {
    height: 220px;
  }

  .booking {
    padding: 28px 18px;
    margin: 30px auto;
  }

  .booking h2 {
    font-size: 30px;
    margin-bottom: 24px;
  }

  .booking input,
  .booking select,
  .booking textarea,
  .booking button {
    font-size: 15px;
  }

  .booking button {
    padding: 16px 18px;
  }

  .blog-link .btn,
  .btn {
    width: 100%;
    margin-top: 20px;
  }

  .footer-note {
    margin-top: 24px;
  }
}

@media (max-width: 700px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-contact {
    text-align: left;
  }

  .map-embed-wrap {
    max-width: 100%;
  }
}

/* Small phones: fix nav overlapping header and tighten hero */
@media (max-width: 480px) {
  .site-nav {
    position: relative; /* disable sticky */
    top: auto;
    padding: 8px 10px;
    gap: 10px;
    justify-content: space-between;
    background: rgba(255,255,255,0.98);
    box-shadow: 0 6px 18px rgba(2,8,23,0.06);
  }

  .site-nav a {
    font-size: 14px;
    padding: 6px 8px;
  }

  header {
    padding: 36px 14px;
    background: linear-gradient(135deg, rgba(11, 105, 127, 0.80), rgba(52, 195, 177, 0.70)), url('assets/images/thumnail1.jpg') center/cover no-repeat;
    background-attachment: scroll;
    background-blend-mode: overlay;
    text-align: center;
  }

  .logo {
    width: 88px;
    display: block;
    margin: 0 auto 12px;
  }

  header h1 {
    font-size: 22px;
    letter-spacing: 0.04em;
    margin-bottom: 8px;
  }

  header {
    padding: 36px 14px;
    background: linear-gradient(135deg, rgba(11, 105, 127, 0.85), rgba(52, 195, 177, 0.65)), url('assets/images/thumnail1.jpg') center/cover no-repeat;
    background-attachment: scroll;
    background-blend-mode: overlay;
    text-align: center;
    min-height: 420px;
  }
  /* Make sure main content isn't hidden under nav */
  main { padding-top: 0; }

  .booking { margin-top: 12px; }

  /* make CTA and buttons full width for easier tapping */
  .btn, .booking button { width: 100%; }

  /* Reduce spacing for compactness */
  section { padding: 24px 14px; }
}