/* ==========================================================================
   CSS Design System for Pruksa 106 Landing Page
   Tone: Sky Blue, Deep Navy, and Pure White
   Target: Mobile-first, Premium, Clean, Modern Grid Layout
   ========================================================================== */

/* Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Prompt:wght@300;400;500;600;700;800&family=Sarabun:wght@300;400;500;600;700&display=swap');

:root {
  /* Color System */
  --primary-deep: #0f2c59;      /* Deep Navy Blue for text headings and dark backgrounds */
  --primary-sky: #0284c7;       /* Royal sky blue for CTA, links, primary highlights */
  --primary-sky-hover: #0369a1; /* Slightly darker sky blue for hover */
  --accent-light: #e0f2fe;      /* Soft ice blue for highlight cards and borders */
  --accent-soft-bg: #f0f9ff;    /* Very light blue-gray for alternate section backgrounds */
  --text-dark: #1e293b;         /* Charcoal gray for body text readability */
  --text-muted: #64748b;        /* Cool gray for secondary captions and text */
  --white: #ffffff;
  --black: #000000;
  --line-color: #06c755;        /* LINE Brand Green */
  --line-hover: #05b04b;
  --call-color: #2563eb;        /* Standard call-out blue */
  
  /* Layout & Spacing */
  --max-width: 1200px;
  --border-radius-sm: 8px;
  --border-radius-md: 16px;
  --border-radius-lg: 24px;
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --box-shadow-sm: 0 4px 6px -1px rgba(15, 44, 89, 0.05), 0 2px 4px -2px rgba(15, 44, 89, 0.05);
  --box-shadow-md: 0 10px 15px -3px rgba(15, 44, 89, 0.08), 0 4px 6px -4px rgba(15, 44, 89, 0.08);
  --box-shadow-lg: 0 20px 25px -5px rgba(15, 44, 89, 0.1), 0 8px 10px -6px rgba(15, 44, 89, 0.1);
  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(255, 255, 255, 0.4);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Sarabun', sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--white);
  overflow-x: hidden;
  padding-bottom: 70px; /* Space for mobile sticky bottom bar */
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Prompt', sans-serif;
  color: var(--primary-deep);
  line-height: 1.3;
  font-weight: 700;
}

h1 {
  font-size: 2.2rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  text-align: center;
  position: relative;
}

h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: var(--primary-sky);
  margin: 0.75rem auto 0;
  border-radius: 2px;
}

h3 {
  font-size: 1.4rem;
  margin-bottom: 0.75rem;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-smooth);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--border-radius-md);
}

/* Grid & Layout Utilities */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

section {
  padding: 4rem 0;
  border-bottom: 1px solid rgba(15, 44, 89, 0.05);
}

.section-bg-alt {
  background-color: var(--accent-soft-bg);
}

/* Typography Helpers */
.text-center { text-align: center; }
.text-primary { color: var(--primary-sky) !important; }
.text-deep { color: var(--primary-deep) !important; }
.text-muted { color: var(--text-muted); }
.font-weight-bold { font-weight: 700; }
.section-intro {
  text-align: center;
  max-width: 700px;
  margin: -0.5rem auto 2rem;
  font-size: 1.1rem;
  color: var(--text-muted);
}

/* Custom Icons */
.icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  border-radius: var(--border-radius-sm);
  font-family: 'Prompt', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: var(--transition-smooth);
  width: 100%;
  text-align: center;
  box-shadow: var(--box-shadow-sm);
}

.btn-primary {
  background-color: var(--primary-sky);
  color: var(--white);
}

.btn-primary:hover {
  background-color: var(--primary-sky-hover);
  transform: translateY(-2px);
  box-shadow: var(--box-shadow-md);
}

.btn-secondary {
  background-color: var(--white);
  color: var(--primary-sky);
  border: 2px solid var(--primary-sky);
  padding: 0.75rem 1.625rem;
  box-shadow: none;
}

.btn-secondary:hover {
  background-color: var(--accent-light);
  transform: translateY(-2px);
}

.btn-line {
  background-color: var(--line-color);
  color: var(--white);
}

.btn-line:hover {
  background-color: var(--line-hover);
  transform: translateY(-2px);
  box-shadow: var(--box-shadow-md);
}

.btn-dark {
  background-color: var(--primary-deep);
  color: var(--white);
}

.btn-dark:hover {
  background-color: #071936;
  transform: translateY(-2px);
  box-shadow: var(--box-shadow-md);
}

/* Header & Navigation */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(2, 132, 199, 0.1);
  transition: var(--transition-smooth);
}

header.scrolled {
  box-shadow: var(--box-shadow-md);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-icon {
  background: linear-gradient(135deg, var(--primary-sky), var(--primary-deep));
  color: var(--white);
  width: 36px;
  height: 36px;
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-family: 'Prompt', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--primary-deep);
  line-height: 1.1;
}

.logo-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Desktop navigation (hidden on mobile) */
.nav-menu {
  display: none;
}

.nav-cta {
  display: none; /* Shown on desktop only */
}

.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 105;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--primary-deep);
  border-radius: 2px;
  transition: var(--transition-smooth);
}

/* Hamburger active transformation */
.hamburger.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile navigation drawer */
.nav-menu.active {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 64px;
  left: 0;
  right: 0;
  background-color: var(--white);
  padding: 1.5rem;
  border-bottom: 2px solid var(--accent-light);
  box-shadow: var(--box-shadow-lg);
  list-style: none;
  gap: 1rem;
  animation: slideDown 0.3s ease-out forwards;
}

.nav-link {
  font-family: 'Prompt', sans-serif;
  font-weight: 500;
  font-size: 1.1rem;
  color: var(--primary-deep);
  display: block;
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(15, 44, 89, 0.05);
}

.nav-link:hover {
  color: var(--primary-sky);
  padding-left: 0.5rem;
}

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


/* ==========================================
   SECTION 1: Hero
   ========================================== */
.hero {
  padding: 2rem 0 3rem;
  position: relative;
  overflow: hidden;
  background: radial-gradient(circle at top right, rgba(2, 132, 199, 0.08), transparent 300px);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.hero-tag {
  display: inline-flex;
  align-self: flex-start;
  background-color: var(--accent-light);
  color: var(--primary-sky-hover);
  padding: 0.25rem 0.75rem;
  border-radius: 50px;
  font-family: 'Prompt', sans-serif;
  font-weight: 600;
  font-size: 0.85rem;
}

.hero h1 {
  font-size: 1.9rem;
  font-weight: 800;
}

.hero-subtitle {
  font-family: 'Prompt', sans-serif;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--primary-sky-hover);
  border-left: 3px solid var(--primary-sky);
  padding-left: 0.75rem;
  margin: 0.25rem 0;
}

.hero-body {
  font-size: 1.05rem;
  color: var(--text-dark);
  line-height: 1.7;
}

/* Call-to-Actions in Hero */
.hero-ctas {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.hero-ctas-buttons {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.hero-cta-note {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 0.25rem;
  line-height: 1.4;
}

/* Hero Visual / Images */
.hero-visual {
  position: relative;
  width: 100%;
}

.hero-image-wrapper {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--box-shadow-lg);
  border: 4px solid var(--white);
}

.hero-image-wrapper img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  transition: transform 0.8s ease;
}

.hero-image-wrapper:hover img {
  transform: scale(1.05);
}

.hero-badge-overlay {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background-color: var(--primary-deep);
  color: var(--white);
  padding: 0.35rem 0.85rem;
  border-radius: 50px;
  font-family: 'Prompt', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: var(--box-shadow-md);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* Quick Info Cards */
.quick-info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-top: 1rem;
}

.quick-card {
  background-color: var(--white);
  border: 1px solid rgba(2, 132, 199, 0.1);
  padding: 1rem;
  border-radius: var(--border-radius-md);
  box-shadow: var(--box-shadow-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: var(--transition-smooth);
}

.quick-card:hover {
  transform: translateY(-3px);
  border-color: var(--primary-sky);
  box-shadow: var(--box-shadow-md);
}

.quick-card-icon {
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
}

.quick-card-value {
  font-family: 'Prompt', sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--primary-deep);
}

.quick-card-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.1rem;
}

/* Span the promotion card across 2 columns if odd */
.quick-card.promo-card {
  grid-column: span 2;
  background: linear-gradient(135deg, var(--accent-light), #ffffff);
  border: 1px dashed var(--primary-sky);
  flex-direction: row;
  justify-content: center;
  gap: 0.5rem;
}

.quick-card.promo-card .quick-card-value {
  color: var(--primary-sky-hover);
}


/* ==========================================
   SECTION 2: จุดเด่นบ้าน (Highlights)
   ========================================== */
.highlights-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.highlight-card {
  background-color: var(--white);
  padding: 1.5rem;
  border-radius: var(--border-radius-md);
  box-shadow: var(--box-shadow-sm);
  border: 1px solid rgba(15, 44, 89, 0.04);
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.highlight-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--box-shadow-lg);
  border-left: 4px solid var(--primary-sky);
}

.highlight-card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.highlight-icon-box {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background-color: var(--accent-soft-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--primary-sky);
  border: 1px solid rgba(2, 132, 199, 0.1);
}

.highlight-card h4 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary-deep);
}

.highlight-card p {
  font-size: 0.95rem;
  color: var(--text-dark);
  line-height: 1.6;
}


/* ==========================================
   SECTION 3: บ้านนี้เหมาะกับใคร (Target)
   ========================================== */
.suitability-wrapper {
  background-color: var(--white);
  border-radius: var(--border-radius-lg);
  padding: 1.5rem;
  box-shadow: var(--box-shadow-md);
  border: 1px solid rgba(2, 132, 199, 0.08);
}

.suitability-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  list-style: none;
  margin-bottom: 2rem;
}

.suitability-item {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid rgba(15, 44, 89, 0.05);
}

.suitability-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.suitability-check {
  width: 24px;
  height: 24px;
  background-color: var(--accent-light);
  color: var(--primary-sky-hover);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: bold;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.suitability-text {
  font-size: 1rem;
  color: var(--text-dark);
  font-weight: 500;
}

.suitability-cta {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.suitability-cta-text {
  font-family: 'Prompt', sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--primary-deep);
}


/* ==========================================
   SECTION 4: รายละเอียดบ้าน (Specs)
   ========================================== */
.specs-wrapper {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.specs-list-card {
  background-color: var(--white);
  border-radius: var(--border-radius-lg);
  border: 1px solid rgba(15, 44, 89, 0.05);
  box-shadow: var(--box-shadow-md);
  overflow: hidden;
}

.spec-row {
  display: grid;
  grid-template-columns: 100px 1fr;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid rgba(15, 44, 89, 0.05);
  align-items: center;
}

.spec-row:last-child {
  border-bottom: none;
}

.spec-row:nth-child(even) {
  background-color: var(--accent-soft-bg);
}

.spec-label-col {
  font-family: 'Prompt', sans-serif;
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.spec-value-col {
  font-weight: 600;
  color: var(--primary-deep);
  font-size: 0.95rem;
}

.specs-cta-card {
  background: linear-gradient(135deg, var(--primary-deep), #061730);
  color: var(--white);
  padding: 2rem 1.5rem;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--box-shadow-lg);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  gap: 1rem;
}

.specs-cta-card h4 {
  color: var(--white);
  font-size: 1.3rem;
  font-weight: 600;
}

.specs-cta-card p {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.5;
}


/* ==========================================
   SECTION 5: ทำเล (Location)
   ========================================== */
.location-wrapper {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.location-places {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.location-card {
  background-color: var(--white);
  border: 1px solid rgba(15, 44, 89, 0.05);
  padding: 1rem;
  border-radius: var(--border-radius-md);
  box-shadow: var(--box-shadow-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition-smooth);
}

.location-card:hover {
  transform: translateX(5px);
  border-color: var(--primary-sky);
  box-shadow: var(--box-shadow-md);
}

.location-card.highlight {
  border: 2px solid var(--primary-sky);
  background-color: var(--accent-soft-bg);
}

.location-card-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.location-card-icon {
  font-size: 1.3rem;
}

.location-card-name {
  font-family: 'Prompt', sans-serif;
  font-weight: 600;
  color: var(--primary-deep);
  font-size: 0.95rem;
}

.location-card-distance {
  background-color: var(--accent-light);
  color: var(--primary-sky-hover);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  text-align: right;
  flex-shrink: 0;
}

.location-card.highlight .location-card-distance {
  background-color: var(--primary-sky);
  color: var(--white);
}

.location-map-visual {
  background-color: var(--white);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--box-shadow-lg);
  border: 4px solid var(--white);
}

.location-map-visual img {
  width: 100%;
  height: 250px;
  object-fit: cover;
}

.location-map-desc {
  padding: 1.25rem;
  border-top: 1px solid rgba(15, 44, 89, 0.05);
}

.location-map-desc h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.location-map-desc p {
  font-size: 0.9rem;
  color: var(--text-dark);
  line-height: 1.5;
}

.location-conclusion {
  margin-top: 1rem;
  text-align: center;
  font-size: 0.95rem;
  color: var(--text-muted);
  font-weight: 500;
}

.location-cta-box {
  margin-top: 1.5rem;
}


/* ==========================================
   SECTION 6: รูปบ้านจริง (Gallery)
   ========================================== */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.gallery-card {
  position: relative;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  box-shadow: var(--box-shadow-sm);
  aspect-ratio: 4/3;
  cursor: pointer;
  background-color: #f1f5f9;
}

.gallery-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
  transition: transform 0.5s ease;
}

.gallery-card:hover img {
  transform: scale(1.08);
}

.gallery-card-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(15, 44, 89, 0.85), transparent);
  color: var(--white);
  padding: 0.75rem 0.5rem 0.35rem;
  font-size: 0.8rem;
  font-weight: 500;
  text-align: center;
  font-family: 'Prompt', sans-serif;
}


/* ==========================================
   SECTION 7: ตอบข้อกังวล (FAQ)
   ========================================== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 800px;
  margin: 0 auto;
}

.faq-card {
  background-color: var(--white);
  border-radius: var(--border-radius-md);
  border: 1px solid rgba(15, 44, 89, 0.05);
  box-shadow: var(--box-shadow-sm);
  overflow: hidden;
  transition: var(--transition-smooth);
}

.faq-header {
  padding: 1.25rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  user-select: none;
  background-color: var(--white);
  transition: var(--transition-smooth);
}

.faq-header:hover {
  background-color: var(--accent-soft-bg);
}

.faq-title-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.faq-number {
  font-family: 'Prompt', sans-serif;
  font-weight: 700;
  color: var(--primary-sky);
  font-size: 1.1rem;
}

.faq-title {
  font-family: 'Prompt', sans-serif;
  font-weight: 600;
  color: var(--primary-deep);
  font-size: 0.95rem;
  line-height: 1.4;
}

.faq-chevron {
  font-size: 0.75rem;
  color: var(--text-muted);
  transition: transform 0.3s ease;
}

.faq-card.active .faq-chevron {
  transform: rotate(180deg);
}

.faq-card.active {
  border-color: var(--primary-sky);
  box-shadow: var(--box-shadow-md);
}

.faq-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
  background-color: var(--white);
}

.faq-card.active .faq-body {
  max-height: 500px; /* arbitrary height to expand */
  transition: max-height 0.3s cubic-bezier(1, 0, 1, 0);
}

.faq-content {
  padding: 0 1.5rem 1.5rem 2.5rem;
  font-size: 0.95rem;
  color: var(--text-dark);
  line-height: 1.6;
  border-top: 1px solid rgba(15, 44, 89, 0.02);
}

.faq-cta-box {
  margin-top: 2rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}


/* ==========================================
   SECTION 8: ฟอร์มติดต่อ (Contact Form)
   ========================================== */
.contact-wrapper {
  background-color: var(--white);
  border-radius: var(--border-radius-lg);
  padding: 2rem 1.25rem;
  box-shadow: var(--box-shadow-lg);
  border: 1px solid rgba(2, 132, 199, 0.08);
  max-width: 600px;
  margin: 0 auto;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-label {
  font-family: 'Prompt', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--primary-deep);
}

.form-control {
  font-family: 'Sarabun', sans-serif;
  font-size: 1rem;
  padding: 0.875rem 1rem;
  border-radius: var(--border-radius-sm);
  border: 1.5px solid rgba(15, 44, 89, 0.1);
  background-color: var(--white);
  color: var(--text-dark);
  transition: var(--transition-smooth);
  width: 100%;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-sky);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

/* Radio buttons list for interests */
.interest-options {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: 0.25rem;
}

.interest-option {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  background-color: var(--accent-soft-bg);
  padding: 0.75rem 1rem;
  border-radius: var(--border-radius-sm);
  border: 1px solid rgba(2, 132, 199, 0.05);
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition-smooth);
}

.interest-option input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary-sky);
  cursor: pointer;
}

.interest-option:hover {
  background-color: var(--accent-light);
  border-color: var(--primary-sky);
}

.interest-option:has(input:checked) {
  background-color: var(--accent-light);
  border-color: var(--primary-sky);
  color: var(--primary-sky-hover);
  font-weight: 600;
}

.form-subtext {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.4;
}


/* ==========================================
   SECTION 9: Final CTA
   ========================================== */
.final-wrapper {
  background-color: var(--white);
  border-radius: var(--border-radius-lg);
  padding: 2.5rem 1.5rem;
  box-shadow: var(--box-shadow-md);
  border: 1px solid rgba(2, 132, 199, 0.08);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.final-title-group {
  text-align: center;
}

.final-title-group h3 {
  font-size: 1.6rem;
  color: var(--primary-deep);
  font-weight: 800;
}

.final-title-group p {
  font-size: 1rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

.final-summary-box {
  background-color: var(--accent-soft-bg);
  border-radius: var(--border-radius-md);
  padding: 1.25rem;
  border-left: 4px solid var(--primary-sky);
}

.final-summary-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  list-style: none;
}

.final-summary-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--primary-deep);
}

.final-summary-bullet {
  color: var(--primary-sky);
  font-weight: bold;
}

.final-ctas {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}


/* ==========================================
   Navigation Menu Overlay (Sticky Bottom Bar)
   ========================================== */
.sticky-bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid rgba(2, 132, 199, 0.15);
  box-shadow: 0 -10px 20px rgba(15, 44, 89, 0.06);
  padding: 0.75rem 1rem;
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 0.75rem;
  z-index: 99;
}

.sticky-bottom-bar .btn {
  padding: 0.75rem;
  font-size: 0.95rem;
  border-radius: var(--border-radius-sm);
  box-shadow: none;
}


/* ==========================================
   LIGHTBOX OVERLAY
   ========================================== */
.lightbox {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(15, 44, 89, 0.95);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

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

.lightbox-content-wrapper {
  position: relative;
  max-width: 90%;
  max-height: 75vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-img {
  max-width: 100%;
  max-height: 75vh;
  object-fit: contain;
  border-radius: var(--border-radius-md);
  border: 4px solid var(--white);
  box-shadow: var(--box-shadow-lg);
}

.lightbox-close {
  position: absolute;
  top: -40px;
  right: 0;
  background: transparent;
  border: none;
  color: var(--white);
  font-size: 2rem;
  cursor: pointer;
  line-height: 1;
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background-color: rgba(255, 255, 255, 0.2);
  color: var(--white);
  border: none;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.lightbox-nav:hover {
  background-color: rgba(255, 255, 255, 0.4);
}

.lightbox-prev {
  left: -20px;
}

.lightbox-next {
  right: -20px;
}

.lightbox-caption {
  color: var(--white);
  font-family: 'Prompt', sans-serif;
  margin-top: 1.5rem;
  text-align: center;
  font-size: 1.05rem;
  font-weight: 500;
  max-width: 80%;
  line-height: 1.4;
}


/* ==========================================================================
   RESPONSIVE DESIGN (Media Queries)
   ========================================================================== */

/* Large Tablets & Desktop (MinWidth: 768px) */
@media (min-width: 768px) {
  body {
    padding-bottom: 0; /* No mobile bottom bar needed */
  }

  h1 {
    font-size: 2.8rem;
  }

  h2 {
    font-size: 2.2rem;
  }

  section {
    padding: 6rem 0;
  }

  /* Navigation adjustments */
  .hamburger {
    display: none;
  }

  .nav-menu {
    display: flex;
    list-style: none;
    gap: 1.5rem;
    align-items: center;
  }

  .nav-link {
    font-size: 0.95rem;
    padding: 0;
    border-bottom: none;
    color: var(--primary-deep);
  }

  .nav-link:hover {
    color: var(--primary-sky);
    padding-left: 0;
  }

  .nav-cta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
  }

  .nav-cta .btn {
    width: auto;
    padding: 0.5rem 1.25rem;
    font-size: 0.9rem;
    border-radius: var(--border-radius-sm);
  }

  /* Sticky bottom bar hides on desktop */
  .sticky-bottom-bar {
    display: none;
  }

  /* Hero Section Split Layout */
  .hero {
    padding: 4rem 0 5rem;
  }

  .hero-grid {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: 3rem;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero-ctas-buttons {
    flex-direction: row;
  }

  .hero-ctas-buttons .btn {
    width: auto;
    flex: 1;
  }

  .hero-cta-note {
    text-align: left;
  }

  .hero-image-wrapper img {
    height: 380px;
  }

  .quick-info-grid {
    grid-template-columns: repeat(5, 1fr);
    margin-top: 1.5rem;
  }

  .quick-card.promo-card {
    grid-column: span 1;
    flex-direction: column;
    text-align: center;
    justify-content: flex-start;
    gap: 0.25rem;
  }

  /* Section 2: Points */
  .highlights-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  /* Section 3: Suitability */
  .suitability-wrapper {
    max-width: 800px;
    margin: 0 auto;
    padding: 2.5rem;
  }

  .suitability-list {
    grid-template-columns: repeat(2, 1fr);
    display: grid;
    gap: 1.25rem;
  }

  /* Section 4: Specifications */
  .specs-wrapper {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: stretch;
    gap: 2.5rem;
  }

  .specs-cta-card {
    padding: 3rem;
  }

  /* Section 5: Locations */
  .location-wrapper {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    align-items: start;
  }

  .location-map-visual img {
    height: 340px;
  }

  .location-conclusion {
    text-align: left;
    margin-top: 0.5rem;
  }

  .location-cta-box {
    margin-top: 0;
  }

  /* Section 6: Gallery Grid */
  .gallery-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
  }

  /* Section 8: Form Details */
  .contact-wrapper {
    padding: 3rem;
  }

  /* Section 9: Final Recap */
  .final-wrapper {
    padding: 3.5rem;
    max-width: 900px;
    margin: 0 auto;
  }

  .final-summary-list {
    grid-template-columns: repeat(4, 1fr);
  }

  .final-ctas {
    flex-direction: row;
    gap: 1rem;
    justify-content: center;
  }

  .final-ctas .btn {
    width: auto;
    min-width: 200px;
  }

  /* Lightbox Prev/Next positions */
  .lightbox-prev {
    left: -60px;
  }

  .lightbox-next {
    right: -60px;
  }
}

/* Medium Desktop (MinWidth: 1024px) */
@media (min-width: 1024px) {
  h1 {
    font-size: 3.2rem;
  }

  .hero h1 {
    font-size: 2.8rem;
  }

  .highlights-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}