/* ===================================================
   CELADON CITY – LANDING PAGE STYLES
   =================================================== */

:root {
  --primary: #4CAF82;
  --primary-dark: #388E60;
  --primary-light: #A8D8C0;
  --accent: #F5A623;
  --dark: #0F1B2D;
  --dark-2: #1A2B40;
  --dark-3: #243550;
  --light: #F8FAF9;
  --gray: #6B7280;
  --gray-light: #E5E7EB;
  --white: #FFFFFF;
  --shadow: 0 4px 24px rgba(15,27,45,0.12);
  --shadow-lg: 0 12px 48px rgba(15,27,45,0.2);
  --radius: 16px;
  --radius-sm: 8px;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  --font-main: 'Inter', sans-serif;
  --font-heading: 'Playfair Display', serif;
}


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

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

body {
  font-family: var(--font-main);
  color: var(--dark);
  background: var(--white);
  overflow-x: hidden;
  line-height: 1.6;
}

/* ── Utilities ── */
.container { max-width: 1240px; margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section-tag {
  display: inline-block;
  background: rgba(76,175,130,0.12);
  color: var(--primary);
  font-size: 12px; font-weight: 700; letter-spacing: 2px;
  text-transform: uppercase;
  padding: 6px 16px; border-radius: 100px;
  margin-bottom: 16px;
}
.section-tag.light { background: rgba(255,255,255,0.2); color: var(--white); }
.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700; line-height: 1.2;
  color: var(--dark); margin-bottom: 20px;
}
.section-title.light { color: var(--white); }
.section-desc { font-size: 1.05rem; color: var(--gray); max-width: 600px; line-height: 1.8; }
.section-desc.center { margin: 0 auto; text-align: center; }
.section-desc.light { color: rgba(255,255,255,0.8); }
.section-header { text-align: center; margin-bottom: 56px; }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; padding: 12px 28px;
  border-radius: 50px; font-size: 0.95rem; font-weight: 600;
  cursor: pointer; text-decoration: none; border: 2px solid transparent;
  transition: var(--transition); white-space: nowrap;
}
.btn-primary {
  background: var(--primary); color: var(--white);
  border-color: var(--primary);
}
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(76,175,130,0.4); }
.btn-outline { background: transparent; color: var(--white); border-color: rgba(255,255,255,0.6); }
.btn-outline:hover { background: var(--white); color: var(--dark); }
.btn-outline-light { background: transparent; color: var(--white); border-color: rgba(255,255,255,0.5); font-size: 0.85rem; padding: 8px 20px; }
.btn-outline-light:hover { background: var(--white); color: var(--dark); }
.btn-lg { padding: 16px 36px; font-size: 1rem; }
.btn-full { width: 100%; }
.btn-link { color: var(--primary); font-weight: 600; font-size: 0.9rem; text-decoration: none; transition: var(--transition); }
.btn-link:hover { color: var(--primary-dark); letter-spacing: 0.5px; }

/* ═══════════════════════════
   NAVBAR
═══════════════════════════ */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 16px 0;
  background: transparent;
  transition: var(--transition);
}
.navbar.scrolled {
  background: rgba(15,27,45,0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 10px 0;
  box-shadow: 0 4px 32px rgba(0,0,0,0.3);
}
.nav-container {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 1240px; margin: 0 auto; padding: 0 24px;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; color: var(--white);
}
.logo-icon { font-size: 1.6rem; }
.logo-text { font-size: 1.3rem; font-weight: 500; letter-spacing: -0.5px; }
.logo-text strong { font-weight: 800; color: var(--primary-light); }
.nav-menu ul { display: flex; list-style: none; gap: 4px; }
.nav-menu a {
  color: rgba(255,255,255,0.85); text-decoration: none;
  font-size: 0.9rem; font-weight: 500; padding: 8px 14px;
  border-radius: 8px; transition: var(--transition);
}
.nav-menu a:hover { color: var(--white); background: rgba(255,255,255,0.1); }
.nav-cta { margin-left: 16px; }
.hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; }
.hamburger span { display: block; width: 24px; height: 2px; background: var(--white); border-radius: 2px; transition: var(--transition); }

/* ═══════════════════════════
   HERO
═══════════════════════════ */
.hero {
  position: relative; height: 100vh; min-height: 600px;
  display: flex; align-items: center; overflow: hidden;
  background: var(--dark);
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
}
.hero-bg-image {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 8s ease;
}
.hero:hover .hero-bg-image { transform: scale(1.04); }
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(15,27,45,0.85) 0%, rgba(15,27,45,0.5) 50%, rgba(15,27,45,0.3) 100%);
}
.hero-content {
  position: relative; z-index: 1;
  max-width: 1240px; margin: 0 auto; padding: 0 24px;
  padding-top: 80px;
}
.hero-eyebrow {
  font-size: 0.85rem; font-weight: 700; letter-spacing: 3px;
  text-transform: uppercase; color: var(--primary-light);
  margin-bottom: 20px; display: flex; align-items: center; gap: 12px;
}
.hero-eyebrow::before { content: ''; display: block; width: 40px; height: 2px; background: var(--primary); }
.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 700; line-height: 1.1;
  color: var(--white); margin-bottom: 24px;
}
.hero-title .highlight {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: 1.1rem; color: rgba(255,255,255,0.8);
  max-width: 560px; line-height: 1.8; margin-bottom: 40px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 64px; }
.hero-stats {
  display: flex; align-items: center; gap: 0;
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: 24px 32px;
  width: fit-content;
}
.stat { text-align: center; padding: 0 24px; }
.stat-num { display: block; font-size: 1.8rem; font-weight: 800; color: var(--primary-light); line-height: 1; }
.stat-label { font-size: 0.8rem; color: rgba(255,255,255,0.6); margin-top: 4px; display: block; }
.stat-divider { width: 1px; height: 48px; background: rgba(255,255,255,0.15); }
.hero-scroll-indicator {
  position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
  z-index: 1;
}
.scroll-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--white); opacity: 0.6;
  animation: scrollBounce 2s infinite;
}
@keyframes scrollBounce {
  0%, 100% { transform: translateY(0); opacity: 0.6; }
  50% { transform: translateY(10px); opacity: 0.2; }
}

/* ═══════════════════════════
   OVERVIEW
═══════════════════════════ */
.section-overview { background: var(--light); }
.overview-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.gallery-main {
  border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-lg); aspect-ratio: 4/3;
  background: var(--gray-light);
}
.gallery-main img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.gallery-thumbs { display: flex; gap: 12px; margin-top: 12px; }
.thumb {
  flex: 1; border-radius: var(--radius-sm); overflow: hidden;
  cursor: pointer; opacity: 0.6; border: 2px solid transparent;
  transition: var(--transition); aspect-ratio: 1; background: var(--gray-light);
}
.thumb img { width: 100%; height: 100%; object-fit: cover; }
.thumb.active { opacity: 1; border-color: var(--primary); }
.thumb:hover { opacity: 0.9; }
.feature-list { list-style: none; margin-top: 24px; display: flex; flex-direction: column; gap: 12px; }
.feature-list li {
  display: flex; align-items: center; gap: 12px;
  background: var(--white); padding: 12px 16px;
  border-radius: var(--radius-sm); box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  font-size: 0.95rem; font-weight: 500;
}
.feature-icon { font-size: 1.2rem; }

/* ═══════════════════════════
   LOCATION
═══════════════════════════ */
.section-location { background: var(--white); }
.location-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; align-items: start; }
.map-embed { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.map-embed iframe { display: block; width: 100%; height: 420px; border: none; }
.location-info { display: flex; flex-direction: column; gap: 24px; }
.location-point {
  display: flex; align-items: flex-start; gap: 16px;
  padding: 20px; background: var(--light); border-radius: var(--radius-sm);
  border-left: 3px solid var(--primary);
}
.lp-icon { font-size: 1.8rem; min-width: 48px; }
.location-point h4 { font-size: 1rem; font-weight: 700; color: var(--dark); margin-bottom: 4px; }
.location-point p { font-size: 0.9rem; color: var(--gray); }

/* ═══════════════════════════
   AMENITIES
═══════════════════════════ */
.section-amenities { padding: 0; }
.section-amenities-bg {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 50%, var(--dark-3) 100%);
  padding: 96px 0;
  position: relative; overflow: hidden;
}
.section-amenities-bg::before {
  content: '';
  position: absolute; top: -50%; right: -10%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(76,175,130,0.15) 0%, transparent 70%);
  border-radius: 50%;
}
.amenities-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; z-index: 1; }
.amenity-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius); overflow: hidden;
  transition: var(--transition); backdrop-filter: blur(10px);
}
.amenity-card:hover { transform: translateY(-6px); background: rgba(255,255,255,0.1); box-shadow: 0 16px 48px rgba(0,0,0,0.3); }
.amenity-img { aspect-ratio: 4/3; background: rgba(255,255,255,0.05); overflow: hidden; }
.amenity-img img { width: 100%; height: 100%; object-fit: cover; }
.amenity-body { padding: 20px; }
.amenity-body h3 { font-size: 0.85rem; font-weight: 700; letter-spacing: 0.5px; color: var(--white); margin-bottom: 10px; }
.amenity-body p { font-size: 0.85rem; color: rgba(255,255,255,0.6); line-height: 1.6; margin-bottom: 16px; }

/* ═══════════════════════════
   DESIGN
═══════════════════════════ */
.section-design { background: var(--light); }
.design-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.design-card {
  background: var(--white); border-radius: var(--radius);
  padding: 40px 32px; box-shadow: var(--shadow);
  transition: var(--transition); position: relative; overflow: hidden;
}
.design-card::before {
  content: '';
  position: absolute; bottom: 0; left: 0; right: 0; height: 4px;
  background: var(--gray-light); transition: var(--transition);
}
.design-card.featured::before { background: linear-gradient(90deg, var(--primary), var(--accent)); }
.design-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.design-card:hover::before { background: linear-gradient(90deg, var(--primary), var(--accent)); height: 6px; }
.design-icon { width: 64px; height: 64px; border-radius: var(--radius-sm); overflow: hidden; margin-bottom: 20px; background: var(--gray-light); }
.design-icon img { width: 100%; height: 100%; object-fit: contain; }
.design-card h3 { font-family: var(--font-heading); font-size: 1.5rem; font-weight: 700; margin-bottom: 12px; }
.design-card p { font-size: 0.95rem; color: var(--gray); line-height: 1.7; margin-bottom: 20px; }
.design-card.featured { background: var(--dark); }
.design-card.featured h3 { color: var(--white); }
.design-card.featured p { color: rgba(255,255,255,0.7); }
.design-card.featured .btn-link { color: var(--primary-light); }

/* ═══════════════════════════
   PROJECTS
═══════════════════════════ */
.section-projects { background: var(--white); }
.projects-list { display: flex; flex-direction: column; gap: 64px; }
.project-item { display: grid; grid-template-columns: 1.2fr 1fr; gap: 64px; align-items: center; }
.project-item.reverse { grid-template-columns: 1fr 1.2fr; }
.project-item.reverse .project-img { order: 2; }
.project-item.reverse .project-info { order: 1; }
.project-img {
  border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-lg);
  aspect-ratio: 4/3; background: var(--gray-light);
}
.project-img img { width: 100%; height: 100%; object-fit: cover; transition: 0.5s ease; }
.project-img:hover img { transform: scale(1.05); }
.project-tag {
  display: inline-block; font-size: 0.75rem; font-weight: 700;
  letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--primary); background: rgba(76,175,130,0.1);
  padding: 4px 12px; border-radius: 100px; margin-bottom: 12px;
}
.project-info h3 { font-family: var(--font-heading); font-size: 2rem; font-weight: 700; margin-bottom: 16px; }
.project-info p { color: var(--gray); line-height: 1.8; margin-bottom: 28px; font-size: 1rem; }

/* ═══════════════════════════
   TESTIMONIALS
═══════════════════════════ */
.section-testimonials { background: var(--light); }
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.testimonial-card {
  background: var(--white); border-radius: var(--radius);
  padding: 32px; box-shadow: var(--shadow); transition: var(--transition);
}
.testimonial-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.testimonial-card.featured { background: var(--dark); }
.testimonial-card.featured p { color: rgba(255,255,255,0.8); }
.testimonial-card.featured .author-name { color: var(--white); }
.testimonial-card.featured .author-role { color: rgba(255,255,255,0.5); }
.stars { color: var(--accent); font-size: 1.1rem; margin-bottom: 16px; letter-spacing: 2px; }
.testimonial-card p { color: var(--gray); font-size: 0.95rem; line-height: 1.7; margin-bottom: 20px; font-style: italic; }
.testimonial-author { display: flex; flex-direction: column; gap: 4px; }
.author-name { font-weight: 700; font-size: 0.95rem; }
.author-role { font-size: 0.8rem; color: var(--gray); }

/* ═══════════════════════════
   CONTACT
═══════════════════════════ */
.section-contact { padding: 0; }
.contact-bg {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-3) 100%);
  padding: 96px 0;
  position: relative; overflow: hidden;
}
.contact-bg::after {
  content: '';
  position: absolute; bottom: -100px; left: -100px;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(76,175,130,0.1) 0%, transparent 70%);
  border-radius: 50%;
}
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 64px; align-items: start; position: relative; z-index: 1; }
.contact-info { padding-top: 16px; }
.contact-details { margin-top: 32px; display: flex; flex-direction: column; gap: 16px; }
.cd-item { display: flex; align-items: center; gap: 12px; color: rgba(255,255,255,0.8); font-size: 0.95rem; }
.cd-icon { font-size: 1.2rem; }
.contact-form-wrap {
  background: var(--white); border-radius: var(--radius);
  padding: 40px; box-shadow: var(--shadow-lg);
}
.contact-form h3 { font-family: var(--font-heading); font-size: 1.6rem; font-weight: 700; margin-bottom: 24px; }
.form-group { margin-bottom: 16px; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%; padding: 14px 16px;
  border: 1.5px solid var(--gray-light);
  border-radius: var(--radius-sm);
  font-family: var(--font-main); font-size: 0.95rem; color: var(--dark);
  background: var(--light); transition: var(--transition); outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--primary); background: var(--white); box-shadow: 0 0 0 3px rgba(76,175,130,0.1); }
.form-group textarea { resize: none; }

/* ═══════════════════════════
   FOOTER
═══════════════════════════ */
.footer { background: #060E1A; color: var(--white); padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand { display: flex; flex-direction: column; gap: 12px; }
.footer-brand .logo-icon { font-size: 1.8rem; }
.footer-brand .logo-text { font-size: 1.2rem; font-weight: 500; }
.footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.5); line-height: 1.7; margin-top: 8px; }
.footer-links h4 { font-size: 0.85rem; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; color: rgba(255,255,255,0.5); margin-bottom: 16px; }
.footer-links ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-links a { color: rgba(255,255,255,0.7); text-decoration: none; font-size: 0.9rem; transition: var(--transition); }
.footer-links a:hover { color: var(--primary-light); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 20px 0; text-align: center; }
.footer-bottom p { font-size: 0.85rem; color: rgba(255,255,255,0.4); }

/* ═══════════════════════════
   TOAST
═══════════════════════════ */
.toast {
  position: fixed; bottom: 32px; left: 50%; transform: translateX(-50%) translateY(100px);
  background: var(--dark); color: var(--white);
  padding: 16px 28px; border-radius: 100px;
  box-shadow: var(--shadow-lg); z-index: 9999;
  transition: var(--transition); white-space: nowrap;
  border: 1px solid rgba(76,175,130,0.4);
}
.toast.show { transform: translateX(-50%) translateY(0); }

/* ═══════════════════════════
   RESPONSIVE
═══════════════════════════ */
@media (max-width: 1024px) {
  .amenities-grid { grid-template-columns: repeat(2, 1fr); }
  .overview-grid { grid-template-columns: 1fr; }
  .location-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .nav-menu { display: none; }
  .hamburger { display: flex; }
  .nav-menu.open {
    display: block; position: fixed; inset: 0; top: 64px;
    background: var(--dark); padding: 24px;
  }
  .nav-menu.open ul { flex-direction: column; gap: 0; }
  .nav-menu.open a { display: block; padding: 16px; font-size: 1.1rem; border-bottom: 1px solid rgba(255,255,255,0.08); }
  .nav-cta { display: none; }
  .hero-stats { flex-direction: column; gap: 16px; width: 100%; }
  .stat-divider { width: 100%; height: 1px; }
  .hero-title { font-size: 2.4rem; }
  .design-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .project-item, .project-item.reverse { grid-template-columns: 1fr; }
  .project-item.reverse .project-img, .project-item.reverse .project-info { order: unset; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .amenities-grid { grid-template-columns: 1fr; }
}

/* ═══════════════════════════
   ANIMATIONS
═══════════════════════════ */
.fade-in { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* Image placeholder fallback */
img:not([src]), img[src=""] {
  background: linear-gradient(135deg, #e0e7ef 0%, #c7d2de 100%);
  display: block;
  min-height: 200px;
}

/* ═══════════════════════════
   QUICK CONTACT & FORM UPGRADES
═══════════════════════════ */
.quick-contact {
  display: flex; gap: 12px; margin-bottom: 20px;
}
.quick-btn {
  flex: 1; display: flex; align-items: center; justify-content: center;
  gap: 8px; padding: 14px 12px; border-radius: var(--radius-sm);
  font-size: 0.9rem; font-weight: 700; text-decoration: none;
  transition: var(--transition); text-align: center;
}
.quick-btn.call {
  background: var(--primary); color: var(--white);
  box-shadow: 0 4px 16px rgba(76,175,130,0.4);
}
.quick-btn.call:hover { background: var(--primary-dark); transform: translateY(-2px); }
.quick-btn.zalo {
  background: #0068FF; color: var(--white);
  box-shadow: 0 4px 16px rgba(0,104,255,0.35);
}
.quick-btn.zalo:hover { background: #0054cc; transform: translateY(-2px); }

.form-divider {
  display: flex; align-items: center; gap: 12px;
  margin: 0 0 20px; color: rgba(255,255,255,0.4); font-size: 0.85rem;
}
.form-divider::before, .form-divider::after {
  content: ''; flex: 1; height: 1px; background: rgba(255,255,255,0.15);
}
.form-divider span { white-space: nowrap; }

.contact-form h3 { font-family: var(--font-heading); font-size: 1.4rem; font-weight: 700; margin-bottom: 4px; }
.form-sub { font-size: 0.85rem; color: var(--gray); margin-bottom: 20px; }

.form-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 0;
}
.form-group label {
  display: block; font-size: 0.8rem; font-weight: 600;
  color: #4A5568; margin-bottom: 6px;
}
.form-group label .req { color: #E53E3E; }
.form-note {
  text-align: center; font-size: 0.78rem; color: var(--gray);
  margin-top: 12px;
}
@media (max-width: 480px) {
  .form-row { grid-template-columns: 1fr; }
  .quick-contact { flex-direction: column; }
}