@import url('https://fonts.googleapis.com/css2?family=Sarabun:wght@300;400;500;600;700&family=Inter:wght@400;500;600;700&display=swap');

:root {
  /* HSL Tailored Color Palette - WCAG AA compliant contrast (> 4.5:1, mostly > 7:1) */
  --primary: hsl(220, 75%, 16%);      /* Deep Navy Blue for headers, primary text */
  --primary-light: hsl(220, 70%, 28%);/* Lighter navy for hover states */
  --accent: hsl(175, 85%, 20%);       /* Dark Teal for buttons, call-to-actions */
  --accent-light: hsl(175, 80%, 28%); /* Hover teal */
  --bg-main: hsl(210, 20%, 95%);      /* Soft light background */
  --bg-card: hsl(0, 0%, 100%);        /* White for card backgrounds */
  --text-dark: hsl(220, 40%, 10%);    /* Body text (Almost Black) */
  --text-muted: hsl(220, 15%, 35%);   /* Secondary text */
  --border: hsl(220, 15%, 80%);       /* Border gray */
  --error: hsl(0, 80%, 35%);          /* Dark Red for error states (Contrast > 4.5:1) */
  --success: hsl(140, 70%, 25%);      /* Dark Green for success states */
  --focus-outline: hsl(35, 100%, 45%);/* High-visibility Amber/Orange for focus indicator */
  
  /* Layout and sizing */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 25px rgba(30, 58, 138, 0.08);
  --shadow-lg: 0 20px 40px rgba(30, 58, 138, 0.12);
  
  /* Font Families */
  --font-thai: 'Sarabun', 'Inter', sans-serif;
}

/* ----------------------------------------------------
   Reset & Base Styles (WCAG AA: Resize Text, Line-height)
   ---------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px; /* Base size */
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-thai);
  background-color: var(--bg-main);
  color: var(--text-dark);
  line-height: 1.6; /* WCAG 1.4.12: Good line-height */
  font-size: 1rem;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Headings (Semantic structure) */
h1, h2, h3, h4 {
  color: var(--primary);
  background-color: #ffffff;
  font-weight: 700;
  line-height: 1.3;
}

h1 { font-size: 2.2rem; }
h2 { font-size: 1.75rem; margin-bottom: 1.5rem; }
h3 { font-size: 1.3rem; margin-bottom: 0.75rem; }

p {
  margin-bottom: 1rem;
}

a {
  color: var(--primary-light);
  text-decoration: underline;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--primary);
  text-decoration: none;
}

/* ----------------------------------------------------
   Accessibility Utilities (WCAG Critical)
   ---------------------------------------------------- */
/* Skip Link - Hidden offscreen by default, appears on keyboard tab */
.skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  background: var(--focus-outline);
  color: var(--primary);
  padding: 12px 24px;
  z-index: 9999;
  font-weight: bold;
  text-decoration: none;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  box-shadow: var(--shadow-lg);
  transition: top 0.2s ease;
}

.skip-link:focus-visible {
  top: 0;
  outline: 3px solid var(--primary) !important;
}

/* Screen Reader Only Utility */
.sr-only {
  display: inline-block;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
  color: #0b1e3d;
  background-color: #ffffff;
}

/* High-Contrast Focus Outline for WCAG AA (2.4.7 Focus Visible) */
:focus-visible {
  outline: 3px solid var(--focus-outline) !important;
  outline-offset: 3px !important;
}

/* Disable focus for mouse users if browser supports :focus-visible, 
   but ensure keyboard users always get the outline */
:focus:not(:focus-visible) {
  outline: none;
}

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

/* Premium Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-thai);
  font-size: 1rem;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
  min-height: 48px; /* Touch Target minimum 48px for excellent usability */
  min-width: 48px;
}

.btn-primary {
  background-color: #d54141;
  color: #ffffff;
}

.btn-primary:hover {
  background-color: #c23333;
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background-color: #ffffff;
  color: #0b1e3d;
  border: 2px solid #0b1e3d;
}

.btn-secondary:hover {
  background-color: #e6f0fa;
  color: #1e3a8a;
}

/* Header & Navigation */
.header-wrapper {
  background-color: #0b1e3d;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.5rem;
  color: #ffffff;
  background-color: #0b1e3d;
  text-decoration: none;
}

.logo span {
  color: #ffffff;
  background-color: #0b1e3d;
}

.logo-icon {
  width: 32px;
  height: 32px;
  fill: var(--accent);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 12px;
}

.nav-link {
  color: hsl(220, 20%, 85%);
  background-color: #0b1e3d;
  text-decoration: none;
  font-weight: 500;
  font-size: 1rem;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: background-color 0.2s;
  display: inline-block;
}

.nav-link:hover, .nav-link.active {
  background-color: #1e3a8a;
  color: #ffffff;
  text-decoration: none;
}

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

/* Accessible Selector / Dropdowns */
.lang-selector {
  position: relative;
}

.select-custom {
  background-color: var(--bg-main);
  color: var(--text-dark);
  border: 1px solid var(--border);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-family: var(--font-thai);
  font-size: 0.9rem;
  min-height: 40px;
  cursor: pointer;
}

.header-actions .select-custom {
  background-color: #1e3a8a;
  color: #ffffff;
  border: 1px solid #ffffff;
}

.header-actions .select-custom option {
  background-color: #0b1e3d;
  color: #ffffff;
}

header .btn-secondary {
  background-color: transparent;
  color: #ffffff;
  border: 2px solid #ffffff;
}

header .btn-secondary:hover {
  background-color: #ffffff;
  color: #0b1e3d;
}

/* ----------------------------------------------------
   Search Container Section (Page 1)
   ---------------------------------------------------- */
.search-hero {
  background-color: #0b1e3d;
  background: linear-gradient(135deg, hsl(220, 75%, 14%) 0%, hsl(220, 60%, 25%) 100%);
  color: #ffffff;
  padding: 60px 0;
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  margin-bottom: 40px;
}

.search-hero h1 {
  color: #ffffff;
  background-color: #0b1e3d;
  text-align: center;
  margin-bottom: 30px;
  font-size: 2.25rem;
}

.search-card {
  background-color: var(--bg-card);
  color: var(--text-dark);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-lg);
}

.search-type-group {
  border: none;
  display: flex;
  gap: 24px;
  margin-bottom: 24px;
}

.radio-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  cursor: pointer;
  font-size: 1rem;
}

.radio-label input[type="radio"] {
  width: 20px;
  height: 20px;
  accent-color: var(--accent);
}

.search-grid {
  display: grid;
  grid-template-columns: 1.5fr 1.5fr 1.2fr 1.2fr;
  gap: 20px;
  margin-bottom: 24px;
}

.form-control {
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
}

.form-label {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--primary);
}

.form-input {
  width: 100%;
  height: 48px;
  padding: 8px 16px;
  border: 2.5px solid var(--border);
  border-radius: var(--radius-md);
  font-family: var(--font-thai);
  font-size: 1rem;
  color: var(--text-dark);
  background-color: #ffffff;
  transition: border-color 0.2s;
}

.form-input:focus {
  border-color: var(--accent);
  outline: none;
}

/* Autocomplete Combobox dropdown styling */
.combobox-container {
  position: relative;
}

.listbox {
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  max-height: 200px;
  overflow-y: auto;
  background-color: #ffffff;
  border: 2px solid var(--accent);
  border-top: none;
  border-bottom-left-radius: var(--radius-md);
  border-bottom-right-radius: var(--radius-md);
  list-style: none;
  z-index: 10;
  display: none; /* Controlled by JS */
  box-shadow: var(--shadow-md);
  margin-top: -2px;
}

.listbox-option {
  padding: 12px 16px;
  cursor: pointer;
  font-size: 0.95rem;
}

.listbox-option:hover, 
.listbox-option.focused {
  background-color: hsla(175, 85%, 20%, 0.1);
  color: var(--accent);
  font-weight: 600;
}

/* Passenger Panel Styling */
.passenger-fieldset {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 24px;
}

.passenger-legend {
  font-weight: 700;
  color: var(--primary);
  padding: 0 10px;
  font-size: 1rem;
}

.passenger-row-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.passenger-type-col {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--bg-main);
  padding: 12px 16px;
  border-radius: var(--radius-md);
}

.passenger-info-text {
  display: flex;
  flex-direction: column;
}

.passenger-title {
  font-weight: 600;
  font-size: 0.95rem;
}

.passenger-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.counter-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-counter {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--primary);
  color: #ffffff;
  border: none;
  font-size: 1.2rem;
  font-weight: bold;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 32px; /* Small layout adjustment: standard sizing */
  min-width: 32px;
}

.btn-counter:hover {
  background-color: var(--primary-light);
}

.btn-counter:disabled {
  background-color: var(--border);
  cursor: not-allowed;
}

.counter-val {
  font-weight: 700;
  font-size: 1.1rem;
  min-width: 20px;
  text-align: center;
}

.search-submit-wrapper {
  display: flex;
  justify-content: flex-end;
}

.btn-search {
  padding: 12px 40px;
  font-size: 1.1rem;
}

/* ----------------------------------------------------
   Carousel (Promotion Banner)
   ---------------------------------------------------- */
.carousel-section {
  margin-top: 40px;
  margin-bottom: 40px;
}

.carousel {
  position: relative;
  background-color: #0b1e3d;
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 320px;
  color: #ffffff;
}


.carousel-play-pause-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  background-color: #0b1e3d;
  border: 1px solid #ffffff;
  color: #ffffff;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  z-index: 5;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: bold;
  display: flex;
  align-items: center;
  gap: 6px;
  min-height: 36px;
}

.play-pause-text {
  color: #ffffff;
  background-color: #0b1e3d;
}

.carousel-inner {
  height: 100%;
  position: relative;
}

.carousel-item {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.5s ease-in-out;
  display: flex;
  align-items: center;
  padding: 40px 80px;
  z-index: 1;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.carousel-item.active {
  opacity: 1;
  z-index: 2;
}

/* Carousel item backgrounds using beautiful gradients overlay */
.carousel-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, rgba(30, 58, 138, 0.95) 0%, rgba(30, 58, 138, 0.6) 100%);
  z-index: -1;
}

.carousel-content {
  max-width: 550px;
  background-color: #0b1e3d;
  padding: 24px;
  border-radius: var(--radius-md);
}

.carousel-tag {
  background-color: var(--accent);
  color: #ffffff;
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 700;
  display: inline-block;
  margin-bottom: 12px;
}

.carousel-content h2 {
  color: #ffffff;
  background-color: #0b1e3d;
  margin-bottom: 12px;
  font-size: 2rem;
}

.carousel-content p {
  color: hsl(220, 20%, 90%);
  background-color: #0b1e3d;
  margin-bottom: 24px;
}

/* Slide Dots indicators */
.carousel-nav {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 12px;
  z-index: 5;
}

.carousel-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.4);
  border: none;
  cursor: pointer;
  padding: 0;
}

.carousel-dot.active {
  background-color: #ffffff;
  width: 24px;
  border-radius: 6px;
}

/* Previous / Next Manual navigation buttons */
.carousel-control {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  background-color: #0b1e3d;
  border: none;
  border-radius: 50%;
  color: #ffffff;
  font-size: 1.5rem;
  cursor: pointer;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
}

.carousel-control:hover {
  background-color: var(--accent);
}

.carousel-control.prev {
  left: 20px;
}

.carousel-control.next {
  right: 20px;
}

/* ----------------------------------------------------
   Popular Routes Section & Cards
   ---------------------------------------------------- */
.section-wrapper {
  margin-top: 60px;
  margin-bottom: 60px;
}

.routes-grid {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.routes-grid li {
  display: flex;
}

.route-card {
  width: 100%;
  background-color: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: transform 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: var(--text-dark);
  height: 380px;
}

.route-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

.route-image-placeholder {
  width: 100%;
  height: 160px;
  background-color: var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.route-img-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.route-card:hover .route-img-photo {
  transform: scale(1.05);
}

.route-img-svg {
  width: 80px;
  height: 80px;
  opacity: 0.55;
  fill: var(--primary);
}

.route-body {
  padding: 20px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.route-title {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--primary);
  margin-bottom: 8px;
}

.route-details {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 16px;
  flex-grow: 1;
}

.route-price-row {
  border-top: 1px solid var(--border);
  padding-top: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.price-tag {
  color: var(--accent);
  font-size: 1.25rem;
  font-weight: 700;
}

/* ----------------------------------------------------
   Recommended Promotions Section & Cards
   ---------------------------------------------------- */
.promos-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.promo-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.promo-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 6px;
  height: 100%;
  background-color: var(--accent);
}

.promo-title {
  color: var(--primary);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.promo-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  flex-grow: 1;
}

.promo-footer {
  border-top: 1px dotted var(--border);
  padding-top: 12px;
  font-size: 0.8rem;
  color: var(--error);
  font-weight: 600;
}

/* ----------------------------------------------------
   Booking Steps Section
   ---------------------------------------------------- */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.step-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 30px 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  position: relative;
}

.step-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--primary);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 auto 20px auto;
}

.step-card h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
}

.step-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* ----------------------------------------------------
   FAQs Accordion
   ---------------------------------------------------- */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background-color: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  overflow: hidden;
}

.faq-trigger {
  width: 100%;
  background: none;
  border: none;
  padding: 20px 24px;
  text-align: left;
  font-family: var(--font-thai);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 48px;
}

.faq-trigger:hover {
  background-color: hsla(220, 75%, 16%, 0.02);
}

.faq-icon {
  font-size: 1.5rem;
  line-height: 1;
  color: var(--accent);
  transition: transform 0.2s;
}

.faq-trigger[aria-expanded="true"] .faq-icon {
  transform: rotate(45deg);
}

.faq-content {
  padding: 0 24px 20px 24px;
  color: var(--text-dark);
  font-size: 0.95rem;
  border-top: 1px solid var(--border);
  background-color: hsl(210, 20%, 99%);
}

.faq-content[hidden] {
  display: none;
}

/* ----------------------------------------------------
   Media Queries & Responsiveness
   ---------------------------------------------------- */
@media (max-width: 992px) {
  .search-grid {
    grid-template-columns: 1fr 1fr;
  }
  .passenger-row-grid {
    grid-template-columns: 1fr 1fr;
  }
  .routes-grid {
    grid-template-columns: 1fr 1fr;
  }
  .promos-grid {
    grid-template-columns: 1fr 1fr;
  }
  .steps-grid {
    grid-template-columns: 1fr 1fr;
  }
  .carousel {
    height: 380px;
  }
  .carousel-item {
    padding: 30px 40px;
  }
}

@media (max-width: 600px) {
  .search-grid {
    grid-template-columns: 1fr;
  }
  .passenger-row-grid {
    grid-template-columns: 1fr;
  }
  .routes-grid {
    grid-template-columns: 1fr;
  }
  .promos-grid {
    grid-template-columns: 1fr;
  }
  .steps-grid {
    grid-template-columns: 1fr;
  }
  .carousel {
    height: 420px;
  }
  .carousel-item {
    padding: 20px;
    align-items: flex-start;
  }
  .carousel-content h2 {
    font-size: 1.5rem;
  }
  .carousel-control {
    display: none; /* Hide next/prev arrows on mobile, use dots/play */
  }
}

/* ----------------------------------------------------
   Step Indicator Navigation (Pages 2-4)
   ---------------------------------------------------- */
.step-indicator-wrapper {
  margin: 30px 0;
}

.step-list {
  display: flex;
  list-style: none;
  justify-content: space-between;
  padding: 0;
  position: relative;
}

.step-list::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 4px;
  background-color: var(--border);
  z-index: 1;
  transform: translateY(-50%);
}

.step-item {
  background-color: var(--bg-main);
  padding: 8px 20px;
  border: 2.5px solid var(--border);
  border-radius: 50px;
  z-index: 2;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.step-item.completed {
  border-color: var(--accent);
  color: var(--accent);
  background-color: #ffffff;
}

.step-item.active {
  border-color: var(--primary);
  color: #ffffff;
  background-color: var(--primary);
}

/* ----------------------------------------------------
   Summary Search Card
   ---------------------------------------------------- */
.summary-search-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  margin-bottom: 30px;
}

.summary-details {
  display: flex;
  gap: 40px;
}

.summary-details p {
  margin-bottom: 0;
  font-size: 0.95rem;
}

.btn-edit-search {
  min-height: 40px;
  height: 40px;
  padding: 0 20px;
  font-size: 0.9rem;
}

/* ----------------------------------------------------
   Selection Columns & Filters
   ---------------------------------------------------- */
.selection-columns {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 30px;
  align-items: start;
}

.filter-fieldset {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  background-color: var(--bg-card);
  margin-bottom: 24px;
}

.filter-legend {
  font-weight: 700;
  color: var(--primary);
  padding: 0 10px;
  font-size: 1rem;
}

.filter-group-row {
  display: flex;
  gap: 30px;
}

.filter-col-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.filter-subheading {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--primary);
}

.filter-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
  cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}

/* ----------------------------------------------------
   Trip Card Listings (select-trip)
   ---------------------------------------------------- */
.trips-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.trip-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1.5px solid var(--border);
  box-shadow: var(--shadow-sm);
  display: grid;
  grid-template-columns: 1.6fr 1.4fr 1.2fr 1fr;
  gap: 20px;
  align-items: center;
  transition: all 0.2s;
}

.trip-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
}

.trip-card.selected {
  border-color: var(--primary);
  background-color: hsla(220, 75%, 16%, 0.03);
  box-shadow: var(--shadow-md);
}

.trip-time-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.trip-time {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
}

.trip-arrow {
  font-size: 1rem;
  color: var(--text-muted);
}

.trip-duration {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.trip-bus-info {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.bus-class-badge {
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 700;
  width: max-content;
}

.badge-vip {
  background-color: hsla(220, 75%, 16%, 0.1);
  color: var(--primary);
}

.badge-super {
  background-color: hsla(175, 85%, 20%, 0.1);
  color: var(--accent);
}

.badge-standard {
  background-color: hsla(0, 0%, 50%, 0.1);
  color: var(--text-muted);
}

.bus-operator {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.trip-price-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.price-amount {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent);
}

.seat-available-count {
  font-size: 0.85rem;
  color: var(--success);
  font-weight: 600;
}

/* ----------------------------------------------------
   Visual Seating Selector (Bus Deck)
   ---------------------------------------------------- */
.seating-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 30px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
}

.seating-layout-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 30px 0;
}

.legend-container {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
}

.legend-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  font-weight: bold;
  border: 2px solid var(--border);
}

.bus-deck {
  width: 200px;
  border: 3.5px solid var(--primary);
  border-radius: 24px 24px 12px 12px;
  background-color: #ffffff;
  padding: 24px 16px;
  position: relative;
  box-shadow: var(--shadow-sm);
}

.bus-front {
  border-bottom: 2.5px dashed var(--border);
  padding-bottom: 12px;
  margin-bottom: 20px;
  display: flex;
  justify-content: center;
}

.steering-wheel {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  background-color: var(--bg-main);
  padding: 4px 12px;
  border-radius: 4px;
}

.seat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  justify-items: center;
}

.seat-grid > button:nth-child(4n+2) {
  margin-right: 18px; /* Aisle gap space after second column */
}

.seat {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: 2px solid var(--border);
  background-color: #ffffff;
  font-weight: 700;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s;
  min-height: 32px;
  min-width: 32px;
}

.seat.available {
  border-color: var(--success);
  color: var(--success);
}

.seat.available:hover, 
.seat.available:focus {
  background-color: hsla(140, 70%, 25%, 0.08);
}

.seat.selected {
  background-color: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
}

.seat.occupied {
  background-color: #f1f1f1;
  border-color: #d8d8d8;
  color: #6e6e6e;
  cursor: not-allowed;
}

.checkout-summary-panel {
  margin-top: 30px;
  border-top: 2px solid var(--border);
  padding-top: 20px;
}

.summary-title {
  font-size: 1.15rem;
  margin-bottom: 16px;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 12px;
  font-size: 0.95rem;
}

.border-top-sum {
  border-top: 1px dashed var(--border);
  padding-top: 12px;
  margin-top: 12px;
}

.summary-total-price {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent);
}

.btn-block {
  width: 100%;
  margin-top: 12px;
}

/* ----------------------------------------------------
   Passenger Info (Page 3)
   ---------------------------------------------------- */
.form-container-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  margin-bottom: 24px;
}

.form-section-title {
  font-size: 1.25rem;
  color: var(--primary);
  margin-bottom: 20px;
  border-bottom: 2px solid var(--border);
  padding-bottom: 8px;
}

.form-grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 16px;
}

/* Form Validation & Error Summary (WCAG 3.3.1 / 3.3.3) */
.form-error-summary {
  background-color: hsla(0, 80%, 35%, 0.05);
  border: 2px solid var(--error);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 30px;
  display: none; /* Controlled by JS */
}

.form-error-summary h2 {
  color: var(--error);
  font-size: 1.15rem;
  margin-bottom: 10px;
}

.form-error-summary ul {
  list-style-position: inside;
  color: var(--error);
  font-size: 0.95rem;
}

.form-error-summary ul li a {
  color: var(--error);
  text-decoration: underline;
  font-weight: 600;
}

.form-input.has-error {
  border-color: var(--error);
  background-color: hsla(0, 80%, 35%, 0.02);
}

.error-message-text {
  color: var(--error);
  font-size: 0.85rem;
  font-weight: 600;
  margin-top: 4px;
  display: none; /* Controlled by JS */
}

/* ----------------------------------------------------
   Payment & Timer Modal Dialog (Page 4)
   ---------------------------------------------------- */
.timer-banner {
  background-color: hsla(35, 100%, 45%, 0.08);
  border: 2px solid var(--focus-outline);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
}

.timer-text-container {
  display: flex;
  align-items: center;
  gap: 12px;
}

.timer-countdown {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--primary);
  font-variant-numeric: tabular-nums; /* Prevents layout shifting during countdown */
}

.payment-tabs {
  display: flex;
  border-bottom: 2px solid var(--border);
  margin-bottom: 24px;
}

.payment-tab-btn {
  background: none;
  border: none;
  padding: 12px 24px;
  font-family: var(--font-thai);
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: all 0.2s;
  min-height: 48px;
}

.payment-tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.payment-pane {
  display: none;
}

.payment-pane.active {
  display: block;
}

.qr-code-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 30px;
  background-color: var(--bg-main);
  border-radius: var(--radius-md);
  margin-top: 20px;
}

.qr-code-img {
  width: 180px;
  height: 180px;
  border: 4px solid #ffffff;
  box-shadow: var(--shadow-sm);
  margin-bottom: 16px;
}

/* Accessible Modal Overlay & Container (WCAG 2.1.2) */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.6);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-container {
  background-color: #ffffff;
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 480px;
  padding: 30px;
  box-shadow: var(--shadow-lg);
  border: 2px solid var(--focus-outline);
  transform: scale(0.9);
  transition: transform 0.2s;
}

.modal-overlay.active .modal-container {
  transform: scale(1);
}

.modal-title {
  font-size: 1.3rem;
  margin-bottom: 12px;
  color: var(--error);
}

.modal-body-text {
  font-size: 0.95rem;
  color: var(--text-dark);
  margin-bottom: 24px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* ----------------------------------------------------
   Success Ticket & Receipt (Page 5)
   ---------------------------------------------------- */
.success-banner-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 45px 30px;
  text-align: center;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
  margin-bottom: 40px;
}

.success-icon-check {
  width: 60px;
  height: 60px;
  background-color: var(--success);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
  font-weight: bold;
  margin: 0 auto 20px auto;
}

.ticket-card {
  background-color: #ffffff;
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  position: relative;
  margin-bottom: 40px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.ticket-card::before, 
.ticket-card::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--bg-main);
  border: 2px solid var(--border);
  z-index: 5;
  transform: translateY(-50%);
}

.ticket-card::before {
  left: -13px;
}

.ticket-card::after {
  right: -13px;
}

.ticket-header {
  background-color: var(--primary);
  color: #ffffff;
  padding: 20px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.ticket-header h2 {
  color: #ffffff;
  font-size: 1.35rem;
  margin-bottom: 0;
}

.ticket-body {
  padding: 30px;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 40px;
}

.ticket-details-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 30px;
}

.ticket-item-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 600;
}

.ticket-item-val {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary);
  margin-top: 4px;
}

.ticket-barcode-side {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-left: 2px dashed var(--border);
  padding-left: 40px;
}

.barcode-mockup {
  width: 130px;
  height: 130px;
  background-color: #ffffff;
  border: 1px solid var(--border);
  padding: 10px;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.barcode-mockup svg {
  width: 100%;
  height: 100%;
  fill: var(--text-dark);
}

.ticket-actions-btn-group {
  display: flex;
  justify-content: center;
  gap: 20px;
}

/* ----------------------------------------------------
   Responsive Layout & Print Media Queries
   ---------------------------------------------------- */
@media (max-width: 992px) {
  .selection-columns {
    grid-template-columns: 1fr;
  }
  .trip-card {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
  .trip-action-wrapper {
    grid-column: span 2;
    text-align: right;
  }
  .ticket-body {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .ticket-barcode-side {
    border-left: none;
    border-top: 2px dashed var(--border);
    padding-left: 0;
    padding-top: 30px;
  }
}

@media (max-width: 600px) {
  .step-list {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }
  .step-list::before {
    top: 0;
    bottom: 0;
    left: 24px;
    width: 4px;
    height: auto;
    transform: none;
  }
  .step-item {
    margin-left: 10px;
  }
  .summary-search-card {
    flex-direction: column;
    gap: 16px;
    align-items: flex-start;
  }
  .summary-details {
    flex-direction: column;
    gap: 8px;
  }
  .filter-group-row {
    flex-direction: column;
    gap: 20px;
  }
  .trip-card {
    grid-template-columns: 1fr;
  }
  .trip-action-wrapper {
    grid-column: span 1;
  }
  .form-grid-2col {
    grid-template-columns: 1fr;
  }
  .timer-banner {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }
}

@media print {
  body {
    background-color: #ffffff;
    color: #000000;
  }
  .header-wrapper, 
  footer, 
  .skip-link, 
  .btn, 
  .step-indicator-wrapper,
  .success-banner-card,
  .ticket-actions-btn-group,
  .no-print {
    display: none !important;
  }
  .ticket-card {
    border: 1px solid #000000;
    box-shadow: none;
    margin: 0;
  }
  .ticket-card::before, 
  .ticket-card::after {
    display: none;
  }
}

/* ----------------------------------------------------
   Date Navigation Bar
   ---------------------------------------------------- */
.date-navigation-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 24px;
  margin-bottom: 24px;
}
.current-date-nav {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary);
  min-width: 180px;
  text-align: center;
}
.btn-date-nav {
  min-height: 40px;
  height: 40px;
  padding: 0 16px;
  font-size: 0.9rem;
}

/* ----------------------------------------------------
   Inline Edit Search Section
   ---------------------------------------------------- */
.inline-edit-search-section {
  background-color: var(--bg-card);
  border: 2.5px solid var(--primary);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-md);
}

/* ----------------------------------------------------
   Sort and Results Bar
   ---------------------------------------------------- */
.results-header-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 24px;
  margin-bottom: 16px;
}
.results-count-text {
  font-weight: 700;
  color: var(--primary);
  font-size: 1.1rem;
}

/* ----------------------------------------------------
   Trip Card Reviews & Amenities & Transfers
   ---------------------------------------------------- */
.trip-reviews {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.9rem;
  color: var(--focus-outline);
}
.trip-amenities-icons {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}
.amenity-badge {
  background-color: var(--bg-main);
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
}
.trip-sold-out-text {
  color: var(--error);
  font-weight: 700;
  font-size: 1.1rem;
  text-align: center;
}
.btn-transit-detail {
  background: none;
  border: none;
  color: var(--accent-light);
  text-decoration: underline;
  cursor: pointer;
  font-weight: 700;
  font-size: 0.85rem;
  padding: 4px 0;
  min-height: 36px;
  text-align: left;
}
.btn-transit-detail:hover {
  color: var(--accent);
}

/* ----------------------------------------------------
   Empty State Card
   ---------------------------------------------------- */
.empty-results-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 40px;
  border: 2.5px dashed var(--border);
  text-align: center;
  box-shadow: var(--shadow-sm);
  color: var(--text-muted);
}
.empty-results-title {
  color: var(--primary);
  font-size: 1.3rem;
  margin-bottom: 12px;
}
.empty-suggestions {
  list-style-position: inside;
  margin-top: 16px;
  text-align: left;
  display: inline-block;
}

/* ----------------------------------------------------
   Transit Legs Inside Modal
   ---------------------------------------------------- */
.transit-legs-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 16px;
}
.transit-leg-item {
  border-left: 3px solid var(--accent);
  padding-left: 16px;
  position: relative;
}
.transit-leg-item::before {
  content: '';
  position: absolute;
  left: -8px;
  top: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--accent);
}
.transit-wait-time {
  background-color: hsla(35, 100%, 45%, 0.1);
  border: 1px solid var(--focus-outline);
  color: var(--primary);
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: bold;
  margin: 8px 0 8px 16px;
  width: max-content;
}

/* ----------------------------------------------------
   Footer Section Styling
   ---------------------------------------------------- */
footer {
  background-color: #0b1e3d;
  color: #ffffff;
  padding: 60px 0 40px 0;
  margin-top: 60px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(4, 1fr);
  gap: 40px;
}

.footer-col h3 {
  color: #ffffff;
  background-color: #0b1e3d;
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col a {
  color: hsl(220, 20%, 85%);
  background-color: #0b1e3d;
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s;
}

.footer-col a:hover {
  color: var(--accent);
}

.footer-about p {
  color: hsl(220, 20%, 85%);
  background-color: #0b1e3d;
  font-size: 0.95rem;
  line-height: 1.6;
  margin-top: 15px;
}

.social-links {
  list-style: none;
  padding: 0;
  margin: 15px 0 0 0;
  display: flex;
  flex-direction: row !important;
  gap: 12px;
}

.social-icon {
  display: inline-flex;
  aria-label: inherit;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: #1e293b;
  color: #ffffff !important;
  font-weight: 700;
  font-size: 0.85rem;
  transition: background-color 0.2s;
}

.social-icon:hover {
  background-color: var(--accent);
}

.footer-col p {
  color: #f3f4f6;
  background-color: #0b1e3d;
}

footer .logo {
  color: #ffffff;
  background-color: #0b1e3d;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 40px;
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: hsl(220, 20%, 75%);
  font-size: 0.85rem;
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }
  .footer-about {
    grid-column: span 2;
  }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-about {
    grid-column: span 1;
  }
}

/* ----------------------------------------------------
   Scroll Margin offset to prevent Sticky Header overlap
   ---------------------------------------------------- */
.section-wrapper, 
footer, 
section[id], 
div[id="contact"] {
  scroll-margin-top: 100px;
}

/* ----------------------------------------------------
   Accessible Booking Status Modal Popup
   ---------------------------------------------------- */
.a11y-modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(11, 30, 61, 0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.a11y-modal-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.a11y-modal-content {
  background-color: #ffffff;
  border-radius: var(--radius-md);
  padding: 30px;
  width: 90%;
  max-width: 500px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.3);
  transform: scale(0.9);
  transition: transform 0.3s ease;
  position: relative;
}

.a11y-modal-backdrop.active .a11y-modal-content {
  transform: scale(1);
}

.a11y-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.a11y-modal-header h2 {
  margin: 0;
  font-size: 1.4rem;
  color: #0b1e3d;
  background-color: #ffffff;
  padding: 0;
}

.a11y-modal-close-btn {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: #4b5563;
  padding: 4px 8px;
  min-height: 44px;
  min-width: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.a11y-modal-close-btn:hover {
  color: #0b1e3d;
}

.a11y-form-group {
  margin-bottom: 16px;
  text-align: left;
}

.a11y-form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  color: #1f2937;
}

.a11y-form-group input {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid #d1d5db;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: var(--font-thai);
  box-sizing: border-box;
}

.a11y-form-group input:focus {
  outline: 2px solid #1e3a8a;
  border-color: #1e3a8a;
}

.booking-result-box {
  margin-top: 20px;
  padding: 18px;
  border-radius: var(--radius-sm);
  background-color: #f0fdf4;
  border: 1.5px solid #bbf7d0;
  color: #166534;
  text-align: left;
}

.booking-result-box p {
  margin: 6px 0;
  background-color: #f0fdf4;
}

.booking-result-box .success-title {
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 12px;
}

.booking-result-box .badge {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 600;
  background-color: #bbf7d0;
  color: #166534;
}

.booking-result-box .btn {
  margin-top: 14px;
  width: 100%;
  box-sizing: border-box;
}

/* Accessible Toast Notification System (WCAG 1.4.3 & 4.1.3) */
.toast-container {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 90%;
  max-width: 450px;
  pointer-events: none;
}

.toast {
  background-color: #0b1e3d; /* Dark Navy base */
  color: #ffffff;
  padding: 14px 20px;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  font-size: 0.95rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
  opacity: 0;
  transform: translateY(-20px);
  animation: toast-in-anim 0.3s forwards, toast-out-anim 0.3s 2.7s forwards;
  pointer-events: auto;
  border-left: 5px solid #0056b3;
  line-height: 1.4;
}

.toast.toast-success {
  background-color: #1b5e20; /* Accessible dark green on white text */
  border-left-color: #4caf50;
}

.toast.toast-error {
  background-color: #c62828; /* Accessible dark red on white text */
  border-left-color: #ef5350;
}

.toast.toast-warning {
  background-color: #ae6500; /* Accessible dark orange/amber on white text */
  border-left-color: #ff9800;
}

.toast.toast-info {
  background-color: #0b1e3d; /* Dark Navy */
  border-left-color: #2196f3;
}

@keyframes toast-in-anim {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes toast-out-anim {
  to {
    opacity: 0;
    transform: translateY(-20px);
  }
}

/* ----------------------------------------------------
   Responsive Header & Hamburger Menu Toggle (WCAG 2.1/2.2 AA)
   ---------------------------------------------------- */
.menu-toggle {
  display: none;
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 6px;
  color: #ffffff;
  padding: 8px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s, border-color 0.2s;
  box-sizing: border-box;
}

.menu-toggle:focus-visible {
  outline: 3px solid var(--focus-outline, #ae6500);
}

.menu-toggle:hover {
  background-color: rgba(255, 255, 255, 0.15);
  border-color: #ffffff;
}

.header-nav-group {
  display: flex;
  align-items: center;
  gap: 24px;
}

@media (max-width: 992px) {
  .menu-toggle {
    display: inline-flex;
  }

  .header-nav-group {
    display: none;
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background-color: #0b1e3d;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
    flex-direction: column;
    padding: 24px 20px;
    gap: 16px;
    align-items: stretch;
    box-sizing: border-box;
    z-index: 999;
  }

  .header-nav-group.active {
    display: flex;
    animation: slide-down-anim 0.2s ease-out forwards;
  }

  .nav-menu {
    flex-direction: column;
    width: 100%;
    gap: 8px;
    padding: 0;
    margin: 0;
  }

  .nav-link {
    display: block;
    width: 100%;
    box-sizing: border-box;
    text-align: center;
  }

  .header-actions {
    flex-direction: column;
    width: 100%;
    align-items: stretch;
    gap: 12px;
    margin: 0;
  }

  .header-actions .lang-selector, 
  .header-actions .select-custom {
    width: 100%;
    margin: 0;
  }

  .header-actions .btn {
    width: 100%;
    text-align: center;
    box-sizing: border-box;
  }
}

@keyframes slide-down-anim {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}