/* ========================================
   DK08 Travel Stylesheet v2
   - Multi-language CSS (FIXED)
   - Font: Playfair Display + Inter
   - No floating card overlap
   ======================================== */

:root {
  --navy: #0a1f3d;
  --navy-light: #1a3556;
  --navy-deep: #051327;
  --gold: #d4a82e;
  --gold-light: #ecc658;
  --gold-deep: #a3852f;
  --cream: #faf6ec;
  --warm-white: #fdfaf3;
  --white: #ffffff;
  --text: #1a1a1a;
  --text-muted: #555;
  --border-subtle: rgba(212, 168, 46, 0.2);
  --shadow-sm: 0 2px 8px rgba(10, 31, 61, 0.06);
  --shadow-md: 0 8px 24px rgba(10, 31, 61, 0.1);
  --shadow-lg: 0 20px 60px rgba(10, 31, 61, 0.15);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, sans-serif;
  color: var(--text);
  background: var(--warm-white);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: 'Be Vietnam Pro', 'Inter', sans-serif;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

a { color: var(--navy); text-decoration: none; transition: color 0.2s; }
img { max-width: 100%; height: auto; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===========================================
   MULTI-LANGUAGE VISIBILITY (CRITICAL FIX)
   =========================================== */
[data-lang="vi"], [data-lang="en"] {
  display: none !important;
}
html[lang="vi"] [data-lang="vi"] {
  display: revert !important;
}
html[lang="en"] [data-lang="en"] {
  display: revert !important;
}
/* Inline element specifics */
html[lang="vi"] span[data-lang="vi"],
html[lang="en"] span[data-lang="en"] {
  display: inline !important;
}
html[lang="vi"] li[data-lang="vi"],
html[lang="en"] li[data-lang="en"] {
  display: list-item !important;
}
html[lang="vi"] a[data-lang="vi"],
html[lang="en"] a[data-lang="en"] {
  display: inline-block !important;
}
html[lang="vi"] small[data-lang="vi"],
html[lang="en"] small[data-lang="en"] {
  display: block !important;
}

/* ===========================================
   UTILITY BAR (top)
   =========================================== */
.utility-bar {
  background: var(--navy-deep);
  color: rgba(255, 255, 255, 0.85);
  padding: 10px 0;
  font-size: 13px;
  border-bottom: 1px solid rgba(212, 168, 46, 0.1);
}
.utility-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.utility-bar .quick-info {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  align-items: center;
}
.utility-bar .quick-info > span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.utility-bar a {
  color: var(--gold-light);
  font-weight: 500;
}
.utility-bar a:hover { color: var(--gold); }

/* Lang toggle - more visible */
.lang-toggle {
  display: inline-flex !important;
  gap: 0;
  align-items: center;
  background: rgba(212, 168, 46, 0.15);
  border-radius: 6px;
  padding: 3px;
  border: 1px solid rgba(212, 168, 46, 0.4);
}
.lang-toggle button {
  background: transparent;
  border: none;
  color: rgba(255, 255, 255, 0.75);
  padding: 6px 14px;
  font-size: 12px;
  font-family: inherit;
  font-weight: 700;
  cursor: pointer;
  border-radius: 4px;
  transition: all 0.2s;
  letter-spacing: 0.05em;
}
.lang-toggle button.active {
  background: var(--gold);
  color: var(--navy);
}
.lang-toggle button:hover:not(.active) {
  color: var(--white);
}

/* ===========================================
   HEADER
   =========================================== */
header {
  background: var(--navy);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(212, 168, 46, 0.15);
}
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 0;
  gap: 30px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  flex-shrink: 0;
}
.logo-img, .logo img {
  height: 88px !important;
  width: auto !important;
  background: transparent !important;
  display: block !important;
}
.logo-text {
  font-family: 'Playfair Display', serif;
  font-size: 24px;
  color: var(--gold);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.02em;
}
.logo-text small {
  font-size: 10px;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-top: 4px;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
}

.nav-links {
  display: inline-flex;
  gap: 32px;
  align-items: center;
}
.nav-links > a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: color 0.2s;
  position: relative;
  padding: 6px 0;
}
.nav-links > a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transition: transform 0.3s;
}
.nav-links > a:hover, .nav-links > a.active {
  color: var(--gold);
}
.nav-links > a:hover::after, .nav-links > a.active::after {
  transform: scaleX(1);
}
.nav-cta {
  background: var(--gold);
  color: var(--navy) !important;
  padding: 10px 22px !important;
  border-radius: 4px;
  font-weight: 700 !important;
}
.nav-cta::after { display: none !important; }
.nav-cta:hover { background: var(--gold-light) !important; }

.menu-toggle {
  display: none;
  background: transparent;
  color: var(--gold);
  border: 1px solid var(--gold);
  padding: 8px 14px;
  cursor: pointer;
  font-family: inherit;
  border-radius: 4px;
  font-size: 18px;
}

/* ===========================================
   BUTTONS
   =========================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 30px;
  text-decoration: none;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.1em;
  transition: all 0.3s;
  border: 1.5px solid transparent;
  cursor: pointer;
  font-family: inherit;
  border-radius: 4px;
  text-transform: uppercase;
  white-space: nowrap;
}
.btn-primary { background: var(--gold); color: var(--navy); }
.btn-primary:hover { background: var(--gold-light); transform: translateY(-2px); box-shadow: 0 10px 25px rgba(212, 168, 46, 0.3); }
.btn-outline { background: transparent; color: var(--white); border-color: rgba(255, 255, 255, 0.3); }
.btn-outline:hover { border-color: var(--gold); color: var(--gold); }
.btn-navy { background: var(--navy); color: var(--white); }
.btn-navy:hover { background: var(--navy-light); }

/* ===========================================
   SECTIONS
   =========================================== */
.section { padding: 90px 0; }
.section-bg-cream { background: var(--cream); }
.section-bg-navy { background: var(--navy); color: var(--white); }
.section-bg-navy h1, .section-bg-navy h2, .section-bg-navy h3 { color: var(--white); }

.section-label {
  display: inline-block;
  color: var(--gold-deep);
  font-size: 12px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-bottom: 14px;
  font-weight: 700;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--gold);
  font-family: 'Inter', sans-serif;
}
.section-bg-navy .section-label { color: var(--gold); }

.section-title {
  font-size: clamp(34px, 5vw, 52px);
  color: var(--navy);
  margin-bottom: 20px;
  max-width: 700px;
  font-weight: 700;
}
.section-bg-navy .section-title { color: var(--white); }
.section-title em { 
  color: var(--gold-deep); 
  font-style: normal; 
  font-weight: 700;
}
.section-bg-navy .section-title em { color: var(--gold); }

.section-intro {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 660px;
  line-height: 1.7;
  margin-bottom: 16px;
}
.section-bg-navy .section-intro { color: rgba(255, 255, 255, 0.75); }

/* ===========================================
   PAGE HEADER (sub pages)
   =========================================== */
.page-header {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-deep) 100%);
  color: var(--white);
  padding: 80px 0 60px;
  position: relative;
  overflow: hidden;
}
.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  background: radial-gradient(circle at top right, rgba(212, 168, 46, 0.15), transparent 70%);
}
.page-header .container { position: relative; z-index: 2; }
.breadcrumb {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 16px;
}
.breadcrumb a { color: var(--gold-light); }
.page-header h1 {
  font-size: clamp(40px, 6vw, 60px);
  color: var(--white);
  margin-bottom: 16px;
  font-weight: 700;
}
.page-header h1 em { color: var(--gold); font-style: italic; }
.page-header p {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.8);
  max-width: 640px;
}

/* ===========================================
   CARDS
   =========================================== */
.card {
  background: var(--white);
  border-radius: 8px;
  padding: 32px;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(212, 168, 46, 0.1);
  transition: all 0.3s;
  height: 100%;
}
.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.card-icon {
  width: 56px;
  height: 56px;
  background: rgba(212, 168, 46, 0.12);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold-deep);
  font-size: 24px;
  margin-bottom: 20px;
}
.card h3 {
  font-size: 22px;
  color: var(--navy);
  margin-bottom: 12px;
  font-weight: 700;
}
.card p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.7;
}
.card-link {
  display: inline-block;
  margin-top: 16px;
  color: var(--gold-deep);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.card-link:hover { color: var(--gold); }

/* ===========================================
   FORM
   =========================================== */
.form-section { background: var(--cream); padding: 80px 0; }
.form-wrapper {
  max-width: 720px;
  margin: 0 auto;
  background: var(--white);
  padding: 48px;
  border-radius: 8px;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-md);
}
.form-wrapper h2 {
  font-size: 32px;
  color: var(--navy);
  margin-bottom: 8px;
  text-align: center;
}
.form-wrapper .form-sub {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 32px;
  font-size: 15px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-size: 13px;
  color: var(--navy);
  margin-bottom: 6px;
  font-weight: 700;
}
.form-group label .required { color: var(--gold-deep); }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 13px 14px;
  background: var(--cream);
  border: 1.5px solid var(--border-subtle);
  border-radius: 6px;
  color: var(--navy);
  font-family: inherit;
  font-size: 15px;
  transition: all 0.2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--gold);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(212, 168, 46, 0.1);
}
.form-group textarea { resize: vertical; min-height: 100px; }

.checkbox-group { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.checkbox-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  background: var(--cream);
  border: 1.5px solid var(--border-subtle);
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  color: var(--navy);
  font-weight: 600;
  transition: all 0.2s;
  user-select: none;
}
.checkbox-item:hover { border-color: var(--gold); }
.checkbox-item.checked { background: rgba(212, 168, 46, 0.1); border-color: var(--gold); }
.checkbox-item input[type="checkbox"] { accent-color: var(--gold-deep); cursor: pointer; width: 17px; height: 17px; }

.conditional-section {
  background: var(--cream);
  padding: 18px;
  border-radius: 8px;
  margin-top: 14px;
  border-left: 3px solid var(--gold);
  display: none;
}
.conditional-section.show { display: block; }
.conditional-section h4 {
  font-size: 13px;
  color: var(--gold-deep);
  margin-bottom: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-family: 'Inter', sans-serif;
}
.conditional-section .form-group { margin-bottom: 12px; }
.conditional-section .form-group:last-child { margin-bottom: 0; }

.form-submit {
  width: 100%;
  padding: 16px;
  background: var(--gold);
  color: var(--navy);
  border: none;
  border-radius: 4px;
  font-weight: 800;
  font-size: 14px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.3s;
  font-family: inherit;
  margin-top: 12px;
}
.form-submit:hover { background: var(--gold-light); transform: translateY(-2px); box-shadow: 0 10px 25px rgba(212, 168, 46, 0.3); }
.form-success, .form-error {
  padding: 14px 16px;
  margin-top: 14px;
  font-size: 14px;
  display: none;
  border-radius: 6px;
  font-weight: 600;
}
.form-success { background: rgba(76, 175, 80, 0.1); border: 1px solid rgba(76, 175, 80, 0.3); color: #2e7d32; }
.form-error { background: rgba(244, 67, 54, 0.1); border: 1px solid rgba(244, 67, 54, 0.3); color: #c62828; }

/* ===========================================
   FOOTER
   =========================================== */
footer {
  background: var(--navy-deep);
  color: rgba(255, 255, 255, 0.6);
  padding: 60px 0 24px;
  border-top: 1px solid rgba(212, 168, 46, 0.15);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-col h4 {
  font-size: 12px;
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: 20px;
  font-family: 'Inter', sans-serif;
  font-weight: 700;
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; font-size: 14px; }
.footer-col ul a { color: rgba(255, 255, 255, 0.65); transition: color 0.2s; }
.footer-col ul a:hover { color: var(--gold-light); }

.footer-brand .logo-text { margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.7; margin-bottom: 16px; }

.footer-bottom {
  border-top: 1px solid rgba(212, 168, 46, 0.15);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

/* ===========================================
   FLOATING CONTACT BUTTONS (FIXED VISIBILITY)
   =========================================== */
.floating-contact {
  position: fixed !important;
  bottom: 24px !important;
  right: 24px !important;
  display: flex !important;
  flex-direction: column !important;
  gap: 10px !important;
  z-index: 9999 !important;
}
.floating-btn {
  width: 56px !important;
  height: 56px !important;
  border-radius: 50% !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  text-decoration: none !important;
  transition: all 0.3s !important;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25) !important;
  position: relative !important;
}
.floating-btn:hover {
  transform: translateY(-4px) scale(1.05) !important;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3) !important;
}
.floating-btn svg { width: 26px; height: 26px; }
.floating-btn .tooltip {
  position: absolute;
  right: 70px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--navy);
  color: var(--white);
  padding: 6px 12px;
  border-radius: 4px;
  font-size: 12px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
  font-weight: 600;
}
.floating-btn:hover .tooltip { opacity: 1; }
.fb-btn { background: #0084ff; }
.zalo-btn { background: #0068ff; }
.phone-btn { background: var(--gold); color: var(--navy); }
.phone-btn svg { color: var(--navy); }

/* ===========================================
   ANIMATIONS
   =========================================== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-up { animation: fadeUp 0.8s ease-out forwards; }

/* ===========================================
   HELPERS
   =========================================== */
.text-center { text-align: center; }

/* ===========================================
   RESPONSIVE
   =========================================== */
@media (max-width: 900px) {
  .nav-links {
    display: none !important;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--navy);
    flex-direction: column;
    padding: 24px;
    gap: 18px;
    border-top: 1px solid var(--border-subtle);
  }
  .nav-links.active { display: flex !important; }
  .menu-toggle { display: block; }
  
  .form-row, .form-row-3 { grid-template-columns: 1fr; }
  .checkbox-group { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .form-wrapper { padding: 32px 24px; }
  .section { padding: 60px 0; }
  .utility-bar .quick-info { gap: 12px; font-size: 12px; }
  .floating-contact { bottom: 16px !important; right: 16px !important; }
  .floating-btn { width: 48px !important; height: 48px !important; }
  .floating-btn svg { width: 22px; height: 22px; }
}
@media (max-width: 600px) {
  .footer-grid { grid-template-columns: 1fr; }
  .utility-bar .container { flex-direction: column; gap: 8px; align-items: flex-start; }
  .lang-toggle { align-self: stretch; justify-content: center; }
}


/* ===========================================
   AIRLINE LOGOS GRID
   =========================================== */
.airlines-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
  margin-top: 40px;
}
.airline-item {
  background: var(--white);
  padding: 24px 16px;
  border-radius: 10px;
  text-align: center;
  border: 1px solid var(--border-subtle);
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100px;
}
.airline-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--gold);
}
.airline-logo {
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
  font-family: 'Inter', sans-serif;
}
.airline-name {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.05em;
}

/* ── FOOTER: 3 COLS + LOGO CENTERED TOP ── */
footer.dk08-footer {
  background: var(--navy-deep);
  color: rgba(255,255,255,0.6);
  border-top: 3px solid var(--gold);
}
.footer-top {
  text-align: center;
  padding: 48px 0 36px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.footer-top img {
  height: 80px;
  width: auto;
  margin: 0 auto 16px;
  display: block;
}
.footer-tagline {
  font-size: 13px;
  color: rgba(255,255,255,0.45);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-family: 'Inter', sans-serif;
}
.footer-body {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 40px;
  padding: 48px 0 36px;
}
.footer-col h4 {
  font-size: 11px;
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 0.25em;
  margin-bottom: 20px;
  font-family: 'Inter', sans-serif;
  font-weight: 700;
}
.footer-col ul { list-style: none; padding: 0; }
.footer-col ul li { margin-bottom: 10px; font-size: 14px; }
.footer-col ul a { color: rgba(255,255,255,0.6); transition: color 0.2s; text-decoration: none; }
.footer-col ul a:hover { color: var(--gold-light); }
.footer-bottom2 {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 20px 0;
  text-align: center;
  font-size: 12px;
  color: rgba(255,255,255,0.3);
}
@media (max-width: 768px) {
  .footer-body { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .footer-body { grid-template-columns: 1fr; }
}