/* ======================================================
   LIEN-HE.HTML - BLUE THEME
   Đồng bộ với trang chủ: xanh dương / trắng / xám nhạt.
====================================================== */

:root {
  --blue: #0b7cff;
  --blue-dark: #075fcc;
  --blue-soft: #eaf4ff;
  --blue-soft-2: #f5faff;

  --green: #12b76a;
  --green-soft: #ecfdf3;

  --black: #0f172a;
  --black-soft: #1e293b;
  --gray: #64748b;
  --gray-light: #f1f5f9;
  --border: #e2e8f0;
  --white: #ffffff;

  --shadow: 0 20px 60px rgba(15, 23, 42, 0.08);
  --shadow-soft: 0 10px 35px rgba(15, 23, 42, 0.06);

  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;

  --container: 1160px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  color: var(--black);
  background: var(--white);
  line-height: 1.65;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
}

.contact-container {
  width: min(100% - 32px, var(--container));
  margin: 0 auto;
}

.contact-section {
  padding: 84px 0;
}

.contact-section-soft {
  background: linear-gradient(180deg, #ffffff 0%, var(--blue-soft-2) 100%);
}

.contact-section-heading {
  max-width: 760px;
  margin: 0 auto 42px;
  text-align: center;
}

.contact-section-heading h2 {
  font-size: clamp(1.9rem, 5vw, 3rem);
  line-height: 1.12;
  letter-spacing: -1.5px;
  margin-bottom: 14px;
}

.contact-section-heading p {
  color: var(--gray);
}

.contact-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--blue-dark);
  background: var(--blue-soft);
  font-size: 0.9rem;
  font-weight: 850;
}

.contact-eyebrow.light {
  color: var(--white);
  background: rgba(255, 255, 255, 0.12);
}

/* BUTTONS */
.contact-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-weight: 850;
  transition: 0.25s ease;
  white-space: nowrap;
  text-align: center;
}

.contact-btn-primary {
  color: var(--white);
  background: linear-gradient(135deg, var(--blue), #00a3ff);
  box-shadow: 0 14px 30px rgba(11, 124, 255, 0.26);
}

.contact-btn-primary:hover,
.contact-btn-outline:hover,
.contact-header-cta:hover,
.contact-btn-zalo:hover {
  transform: translateY(-2px);
}

.contact-btn-outline {
  color: var(--black);
  background: var(--white);
  border: 1px solid var(--border);
}

.contact-btn-outline:hover {
  color: var(--blue);
  border-color: rgba(11, 124, 255, 0.35);
  box-shadow: var(--shadow-soft);
}

.contact-btn-zalo {
  color: var(--white);
  background: #0068ff;
}

/* HEADER */
.contact-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.88);
}

.contact-nav {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.contact-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.08rem;
  font-weight: 900;
  letter-spacing: -0.6px;
}

.contact-logo-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 18px;
  color: var(--white);
  background: linear-gradient(135deg, #0f172a, var(--blue));
  box-shadow: 0 14px 28px rgba(11, 124, 255, 0.22);
  font-size: 0.85rem;
}

.contact-menu {
  display: none;
  align-items: center;
  gap: 24px;
  color: var(--gray);
  font-weight: 800;
  font-size: 0.95rem;
}

.contact-menu a {
  position: relative;
  padding: 26px 0;
}

.contact-menu a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 18px;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: var(--blue);
  transition: width 0.22s ease;
}

.contact-menu a:hover,
.contact-menu a.active {
  color: var(--blue);
}

.contact-menu a:hover::after,
.contact-menu a.active::after {
  width: 100%;
}

.contact-header-cta {
  display: none;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 22px;
  border-radius: 999px;
  color: var(--white);
  background: linear-gradient(135deg, var(--blue), #00a3ff);
  font-weight: 900;
  box-shadow: 0 14px 30px rgba(11, 124, 255, 0.22);
  transition: 0.25s ease;
}

.contact-menu-toggle {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--white);
  cursor: pointer;
  font-size: 1.3rem;
}

.contact-mobile-menu {
  display: none;
  padding: 0 16px 16px;
  background: var(--white);
  border-bottom: 1px solid var(--border);
}

.contact-mobile-menu.active {
  display: block;
}

.contact-mobile-menu a {
  display: block;
  padding: 13px 4px;
  color: var(--black-soft);
  font-weight: 800;
  border-bottom: 1px solid var(--gray-light);
}

.contact-mobile-menu a.active {
  color: var(--blue);
}

.contact-mobile-cta {
  margin-top: 14px;
  text-align: center;
  border-radius: 999px;
  color: var(--white) !important;
  background: linear-gradient(135deg, var(--blue), #00a3ff);
}

/* HERO */
.contact-hero {
  padding: 76px 0 92px;
  background:
    radial-gradient(circle at top left, rgba(11, 124, 255, 0.16), transparent 34%),
    radial-gradient(circle at bottom right, rgba(11, 124, 255, 0.10), transparent 34%),
    linear-gradient(180deg, #ffffff 0%, #f5faff 100%);
}

.contact-hero-grid {
  display: grid;
  gap: 34px;
  align-items: center;
}

.contact-hero-content h1 {
  max-width: 850px;
  margin-bottom: 18px;
  font-size: clamp(2.25rem, 8vw, 4.8rem);
  line-height: 0.98;
  letter-spacing: -3px;
}

.contact-hero-content p {
  max-width: 760px;
  color: var(--gray);
  font-size: 1.06rem;
  margin-bottom: 26px;
}

.contact-hero-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contact-hero-card {
  padding: 30px;
  border-radius: var(--radius-xl);
  color: var(--white);
  background:
    radial-gradient(circle at top right, rgba(255, 255, 255, 0.22), transparent 38%),
    linear-gradient(135deg, #16233a, var(--blue));
  box-shadow: var(--shadow);
}

.hero-card-icon {
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.14);
  font-size: 1.6rem;
}

.contact-hero-card h2 {
  margin-bottom: 14px;
  font-size: clamp(1.6rem, 4vw, 2.3rem);
  line-height: 1.1;
  letter-spacing: -1px;
}

.hero-phone {
  display: block;
  padding: 14px 0;
  color: var(--white);
  font-size: 1.6rem;
  font-weight: 950;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.hero-phone span {
  display: inline-block;
  margin-left: 8px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.95rem;
  font-weight: 800;
}

.contact-hero-card p {
  margin-top: 18px;
  color: rgba(255, 255, 255, 0.72);
}

/* PERSON */
.person-grid {
  display: grid;
  gap: 18px;
}

.person-card {
  display: grid;
  gap: 18px;
  padding: 26px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  background: var(--white);
  box-shadow: var(--shadow-soft);
  transition: 0.25s ease;
}

.person-card:hover,
.vehicle-card:hover,
.location-card:hover,
.checklist-card:hover,
.faq-card:hover {
  transform: translateY(-4px);
  border-color: rgba(11, 124, 255, 0.26);
  box-shadow: 0 18px 44px rgba(15, 23, 42, 0.09);
}

.person-avatar {
  width: 64px;
  height: 64px;
  display: grid;
  place-items: center;
  border-radius: 22px;
  color: var(--white);
  background: linear-gradient(135deg, var(--blue), #00a3ff);
  font-size: 1.7rem;
  font-weight: 950;
}

.person-info p {
  color: var(--gray);
  font-weight: 800;
}

.person-info h3 {
  font-size: 1.8rem;
  line-height: 1.1;
  letter-spacing: -1px;
}

.person-phone {
  color: var(--blue);
  font-size: 1.2rem;
  font-weight: 950;
}

.person-actions {
  display: grid;
  gap: 10px;
}

/* VEHICLES */
.vehicle-grid {
  display: grid;
  gap: 18px;
}

.vehicle-card,
.location-card,
.checklist-card,
.faq-card {
  position: relative;
  padding: 26px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  background: var(--white);
  box-shadow: var(--shadow-soft);
  transition: 0.25s ease;
}

.vehicle-card.featured {
  background:
    radial-gradient(circle at top right, rgba(11, 124, 255, 0.10), transparent 34%),
    linear-gradient(180deg, #ffffff, #f8fbff);
  border-color: rgba(11, 124, 255, 0.26);
}

.vehicle-badge {
  position: absolute;
  right: 20px;
  top: 20px;
  padding: 7px 11px;
  border-radius: 999px;
  color: var(--blue-dark);
  background: var(--blue-soft);
  font-size: 0.78rem;
  font-weight: 900;
}

.vehicle-icon,
.location-icon {
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  margin-bottom: 16px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--blue-soft), var(--white));
  border: 1px solid rgba(11, 124, 255, 0.12);
  font-size: 1.6rem;
}

.vehicle-card h3,
.location-card h3 {
  margin-bottom: 8px;
  font-size: 1.3rem;
  line-height: 1.22;
  letter-spacing: -0.5px;
}

.vehicle-card p,
.location-card p {
  color: var(--gray);
  margin-bottom: 18px;
}

/* LOCATION */
.location-grid {
  display: grid;
  gap: 18px;
}

/* FORM */
.form-layout {
  display: grid;
  gap: 26px;
  align-items: start;
}

.form-copy h2,
.checklist-card h2 {
  margin-bottom: 14px;
  font-size: clamp(1.9rem, 5vw, 3rem);
  line-height: 1.12;
  letter-spacing: -1.5px;
}

.form-copy p {
  color: var(--gray);
  margin-bottom: 18px;
}

.form-note {
  padding: 16px;
  border-radius: 18px;
  background: var(--blue-soft);
  color: var(--blue-dark);
  font-weight: 700;
}

.booking-form {
  padding: 26px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  background: var(--white);
  box-shadow: var(--shadow-soft);
}

.form-grid {
  display: grid;
  gap: 14px;
}

.form-grid label {
  display: grid;
  gap: 7px;
  color: var(--black);
  font-size: 0.92rem;
  font-weight: 850;
}

.form-grid input,
.form-grid select,
.form-grid textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 13px 14px;
  color: var(--black);
  background: #fbfdff;
  outline: none;
  transition: 0.2s ease;
}

.form-grid input:focus,
.form-grid select:focus,
.form-grid textarea:focus {
  border-color: rgba(11, 124, 255, 0.55);
  box-shadow: 0 0 0 4px rgba(11, 124, 255, 0.10);
}

.full {
  grid-column: 1 / -1;
}

.message-preview {
  margin-top: 16px;
  min-height: 120px;
  white-space: pre-wrap;
  padding: 16px;
  border-radius: 18px;
  border: 1px dashed rgba(11, 124, 255, 0.35);
  background: var(--blue-soft-2);
  color: var(--black-soft);
  font-size: 0.92rem;
}

.form-actions {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

/* FAQ */
.faq-layout {
  display: grid;
  gap: 24px;
  align-items: start;
}

.check-list {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.check-list li {
  list-style: none;
  display: flex;
  gap: 10px;
  color: var(--gray);
}

.check-list li::before {
  content: "✓";
  width: 24px;
  height: 24px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--green);
  background: var(--green-soft);
  font-weight: 950;
  font-size: 0.8rem;
}

.faq-card details {
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.faq-card summary {
  cursor: pointer;
  font-weight: 900;
  color: var(--black);
}

.faq-card details p {
  margin-top: 8px;
  color: var(--gray);
}

.faq-link {
  margin-top: 18px;
}

/* FOOTER */
.contact-footer {
  padding: 34px 0;
  color: rgba(255, 255, 255, 0.72);
  background: #050b14;
}

.footer-grid {
  display: grid;
  gap: 18px;
}

.contact-footer h3 {
  color: var(--white);
  font-size: 1.2rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
}

.footer-links a:hover {
  color: var(--white);
}

/* FLOATING */
.floating-contact {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 999;
  display: flex;
  flex-direction: column-reverse;
  align-items: center;
  gap: 12px;
}

.float-main,
.float-item {
  border: none;
  border-radius: 50%;
  color: var(--white);
  cursor: pointer;
  display: grid;
  place-items: center;
  box-shadow: 0 14px 30px rgba(16, 24, 40, 0.24);
}

.float-main {
  width: 62px;
  height: 62px;
  font-size: 1.45rem;
  background: linear-gradient(135deg, var(--blue), #00a3ff);
  animation: pulse 1.7s infinite, shake 2.8s infinite;
}

.floating-menu {
  display: flex;
  flex-direction: column;
  gap: 10px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(16px);
  transition: 0.25s ease;
}

.floating-contact:hover .floating-menu,
.floating-contact.active .floating-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.float-item {
  position: relative;
  width: 50px;
  height: 50px;
  font-weight: 900;
  transition: 0.2s ease;
}

.float-item:hover {
  transform: translateY(-3px) scale(1.05);
}

.float-item span {
  position: absolute;
  right: 62px;
  padding: 7px 10px;
  border-radius: 999px;
  background: var(--black);
  color: var(--white);
  font-size: 0.78rem;
  opacity: 0;
  pointer-events: none;
  white-space: nowrap;
  transition: 0.2s ease;
}

.float-item:hover span {
  opacity: 1;
}

.float-item.call {
  background: var(--green);
}

.float-item.zalo,
.float-item.zalo2 {
  background: #0068ff;
}

.float-item.messenger {
  background: #7c3aed;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(11, 124, 255, 0.45), 0 14px 30px rgba(16, 24, 40, 0.24);
  }
  70% {
    box-shadow: 0 0 0 18px rgba(11, 124, 255, 0), 0 14px 30px rgba(16, 24, 40, 0.24);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(11, 124, 255, 0), 0 14px 30px rgba(16, 24, 40, 0.24);
  }
}

@keyframes shake {
  0%, 82%, 100% {
    transform: rotate(0deg);
  }
  85% {
    transform: rotate(8deg);
  }
  88% {
    transform: rotate(-8deg);
  }
  91% {
    transform: rotate(6deg);
  }
  94% {
    transform: rotate(-6deg);
  }
  97% {
    transform: rotate(3deg);
  }
}

/* RESPONSIVE */
@media (min-width: 560px) {
  .contact-hero-actions,
  .form-actions {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-hero-actions {
    display: flex;
    flex-wrap: wrap;
  }

  .person-actions {
    grid-template-columns: repeat(2, 1fr);
  }

  .form-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 760px) {
  .person-grid,
  .location-grid,
  .vehicle-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .vehicle-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: center;
  }

  .footer-links {
    justify-content: flex-end;
  }
}

@media (min-width: 900px) {
  .contact-menu,
  .contact-header-cta {
    display: flex;
  }

  .contact-menu-toggle,
  .contact-mobile-menu {
    display: none !important;
  }

  .contact-hero {
    padding: 96px 0 108px;
  }

  .contact-hero-grid {
    grid-template-columns: 1.12fr 0.88fr;
    gap: 52px;
  }

  .form-layout {
    grid-template-columns: 0.82fr 1.18fr;
  }

  .faq-layout {
    grid-template-columns: 1fr 0.9fr;
  }

  .person-card {
    grid-template-columns: auto 1fr;
    align-items: center;
  }

  .person-actions {
    grid-column: 1 / -1;
  }
}

@media (max-width: 420px) {
  .contact-container {
    width: min(100% - 24px, var(--container));
  }

  .contact-section {
    padding: 64px 0;
  }

  .contact-hero {
    padding: 70px 0 76px;
  }

  .contact-hero-content h1 {
    letter-spacing: -2px;
  }

  .contact-btn {
    width: 100%;
  }

  .float-item span {
    display: none;
  }
}