:root {
  --primary-color: #10549c;
  --primary-light: #2c72bb;
  --primary-dark: #083c74;
  --accent-color: #2c72bb;
  --text-color: #333333;
  --text-light: #666666;
  --bg-color: #ffffff;
  --bg-light: #f5f7fa;
  --border-color: #e2e8f0;
  
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --transition: all 0.3s ease;
  --box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --box-shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: var(--font-family); color: var(--text-color); background-color: var(--bg-color); line-height: 1.6; overflow-x: hidden; }
a { text-decoration: none; color: var(--primary-color); transition: var(--transition); }
a:hover { color: var(--primary-light); }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }

header { background-color: var(--bg-color); box-shadow: 0 2px 10px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 1000; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.navbar { display: flex; justify-content: space-between; align-items: center; height: 80px; }
.logo { font-size: 2rem; font-weight: 800; color: var(--primary-color); letter-spacing: 2px; display: flex; align-items: center; gap: 10px; }

.nav-links { display: flex; gap: 30px; align-items: center; height: 100%; }
.nav-links a { color: var(--text-color); font-weight: 600; font-size: 1rem; text-transform: uppercase; letter-spacing: 0.5px; position: relative; display: flex; align-items: center; gap: 5px; }
.nav-links a::after { content: ''; position: absolute; width: 0; height: 2px; bottom: -4px; left: 0; background-color: var(--primary-color); transition: var(--transition); }
.nav-links a:hover::after, .nav-links a.active::after, .dropdown:hover > a::after { width: 100%; }
.nav-links a.active, .nav-links a:hover { color: var(--primary-color); }

.dropdown { position: relative; height: 100%; display: flex; align-items: center; }
.dropdown-content { visibility: hidden; opacity: 0; position: absolute; top: 100%; left: 0; background-color: #fff; min-width: 260px; box-shadow: 0 10px 15px rgba(0,0,0,0.1); z-index: 1001; border-top: 2px solid var(--primary-color); transform: translateY(10px); transition: all 0.3s ease; padding: 10px 0; }
.dropdown:hover .dropdown-content { visibility: visible; opacity: 1; transform: translateY(0); }
.dropdown-content a { color: var(--text-color); padding: 12px 25px; text-transform: none; font-weight: 500; font-size: 0.95rem; display: block; }
.dropdown-content a::after { display: none; }
.dropdown-content a:hover { background-color: var(--bg-light); color: var(--primary-color); padding-left: 30px; }
.menu-toggle { display: none; font-size: 1.5rem; cursor: pointer; color: var(--primary-color); }

.hero { height: calc(100vh - 80px); min-height: 600px; background: linear-gradient(rgba(16, 84, 156, 0.7), rgba(16, 84, 156, 0.8)), url('../assets/images/hero_banner.png') center/cover no-repeat; display: flex; align-items: center; justify-content: center; text-align: center; color: #fff; padding: 0 20px; }
.hero-content { max-width: 800px; animation: fadeInDown 1s ease; }
.hero h1 { font-size: 3.5rem; margin-bottom: 20px; font-weight: 800; text-shadow: 2px 2px 4px rgba(0,0,0,0.3); }
.hero p { font-size: 1.2rem; margin-bottom: 30px; opacity: 0.9; }
.btn { display: inline-block; padding: 12px 30px; background-color: var(--primary-color); color: #fff; border-radius: 4px; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; border: 2px solid var(--primary-color); transition: var(--transition); cursor: pointer; }
.btn:hover { background-color: transparent; color: var(--primary-color); }
.hero .btn:hover { color: #fff; border-color: #fff; }
.btn-secondary { background-color: transparent; border-color: var(--primary-color); color: var(--primary-color); }
.hero .btn-secondary { border-color: #fff; color: #fff; }
.btn-secondary:hover { background-color: var(--primary-color); color: #fff; }
.hero .btn-secondary:hover { background-color: #fff; color: var(--primary-color); }

.section { padding: 80px 0; }
.section-title { text-align: center; margin-bottom: 50px; }
.section-title h2 { font-size: 2.5rem; color: var(--primary-color); position: relative; display: inline-block; }
.section-title h2::after { content: ''; position: absolute; width: 50px; height: 3px; background-color: var(--primary-light); bottom: -10px; left: 50%; transform: translateX(-50%); }
.bg-light { background-color: var(--bg-light); }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
.card { background: #fff; border-radius: 8px; overflow: hidden; box-shadow: var(--box-shadow); transition: var(--transition); border: 1px solid var(--border-color); }
.card:hover { transform: translateY(-5px); box-shadow: var(--box-shadow-hover); }
.card-img { height: 200px; overflow: hidden; }
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.card:hover .card-img img { transform: scale(1.1); }
.card-content { padding: 25px; }
.card-content h3 { font-size: 1.25rem; color: var(--primary-color); margin-bottom: 15px; }
.card-content p { color: var(--text-light); margin-bottom: 20px; }

.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-weight: 600; color: var(--text-color); }
.form-control { width: 100%; padding: 12px 15px; border: 1px solid var(--border-color); border-radius: 4px; font-family: var(--font-family); transition: var(--transition); font-size: 1rem; }
.form-control:focus { outline: none; border-color: var(--primary-color); box-shadow: 0 0 0 3px rgba(16, 84, 156, 0.1); }
textarea.form-control { resize: vertical; min-height: 120px; }

footer { background-color: var(--primary-dark); color: #fff; padding: 60px 0 20px; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 40px; margin-bottom: 40px; }
.footer-col h3 { font-size: 1.5rem; margin-bottom: 20px; color: #fff; }
.footer-col p, .footer-col a { color: rgba(255,255,255,0.8); margin-bottom: 10px; display: block; }
.footer-col a:hover { color: #fff; text-decoration: underline; }
.footer-bottom { text-align: center; padding-top: 20px; border-top: 1px solid rgba(255,255,255,0.1); color: rgba(255,255,255,0.6); font-size: 0.9rem; }

@keyframes fadeInDown { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }
.reveal { opacity: 0; transform: translateY(30px); transition: all 0.8s ease; }
.reveal.active { opacity: 1; transform: translateY(0); }

@media (max-width: 768px) {
  .nav-links { display: none; flex-direction: column; position: absolute; top: 80px; left: 0; width: 100%; background-color: #fff; padding: 20px; box-shadow: 0 10px 10px rgba(0,0,0,0.05); }
  .nav-links.active { display: flex; }
  .menu-toggle { display: block; }
  .hero h1 { font-size: 2.5rem; }
}

/* Project Detail specific */
.project-header { padding: 60px 0; background-color: var(--primary-dark); color: #fff; }
.project-nav { position: sticky; top: 80px; background: #fff; box-shadow: 0 2px 10px rgba(0,0,0,0.05); z-index: 99; }
.project-nav ul { display: flex; justify-content: center; gap: 30px; padding: 15px 0; overflow-x: auto; }
.project-nav a { color: var(--text-color); font-weight: 600; white-space: nowrap; }
.project-nav a:hover { color: var(--primary-color); }
.detail-section { padding: 60px 0; border-bottom: 1px solid var(--border-color); }
.detail-title { color: var(--primary-color); font-size: 2rem; margin-bottom: 30px; }
.gallery { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 15px; }
.gallery img { border-radius: 8px; cursor: pointer; transition: transform 0.3s; }
.gallery img:hover { transform: scale(1.05); }

/* UI Enhancements */
.about-images { position: relative; padding-bottom: 30px; margin-top: 20px; }
.img-main { width: 80%; border-radius: 12px; box-shadow: 0 20px 40px rgba(0,0,0,0.15); display: block; }
.img-overlay { position: absolute; bottom: 0; right: 0; width: 55%; border-radius: 12px; box-shadow: 0 20px 40px rgba(0,0,0,0.25); border: 6px solid var(--bg-light); transition: transform 0.5s ease; }
.about-images:hover .img-overlay { transform: scale(1.05) translate(-10px, -10px); }
.experience-badge { position: absolute; top: -30px; left: -20px; background: linear-gradient(135deg, var(--primary-light), var(--primary-dark)); color: #fff; padding: 20px; border-radius: 50%; width: 130px; height: 130px; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; box-shadow: 0 15px 30px rgba(16,84,156,0.4); animation: float 3s ease-in-out infinite; z-index: 10; border: 4px solid #fff; }
.experience-badge .num { font-size: 2.5rem; font-weight: 800; line-height: 1; margin-bottom: 5px; }
.experience-badge .text { font-size: 0.85rem; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; }

@keyframes float { 0% { transform: translateY(0px); } 50% { transform: translateY(-12px); } 100% { transform: translateY(0px); } }

/* Partner Marquee */
.partner-marquee { overflow: hidden; width: 100%; padding: 40px 0; position: relative; }
.partner-marquee::before, .partner-marquee::after { content: ''; position: absolute; top: 0; width: 150px; height: 100%; z-index: 2; pointer-events: none; }
.partner-marquee::before { left: 0; background: linear-gradient(to right, #fff 0%, transparent 100%); }
.partner-marquee::after { right: 0; background: linear-gradient(to left, #fff 0%, transparent 100%); }
.marquee-track { display: flex; width: max-content; animation: scrollMarquee 30s linear infinite; }
.marquee-track:hover { animation-play-state: paused; }
.partner-logo { padding: 0 50px; display: flex; align-items: center; justify-content: center; transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94); cursor: pointer; }
.partner-logo img { height: 55px; width: auto; object-fit: contain; max-width: 200px; }
.partner-logo:hover { transform: scale(1.15); }

@keyframes scrollMarquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.about-features li { display: flex; align-items: flex-start; gap: 15px; margin-bottom: 20px; }
.about-features .icon-box { background: rgba(16,84,156,0.1); color: var(--primary-color); width: 40px; height: 40px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-size: 1.2rem; }


.luxury-card { display: flex; flex-direction: column; height: 100%; background: #fff; border-radius: 4px; overflow: hidden; box-shadow: 0 4px 15px rgba(0,0,0,0.03); transition: all 0.4s ease; border: 1px solid var(--border-color); }
.luxury-card:hover { box-shadow: 0 15px 35px rgba(0,0,0,0.08); transform: translateY(-5px); }
.luxury-card .card-img { height: 260px; overflow: hidden; position: relative; }
.luxury-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s ease; }
.luxury-card:hover .card-img img { transform: scale(1.05); }
.luxury-card .card-content { flex: 1; display: flex; flex-direction: column; padding: 40px; text-align: left; background: #fff; }
.luxury-card .icon-wrap { color: var(--primary-color); margin-bottom: 25px; display: inline-flex; align-items: center; justify-content: center; width: 50px; height: 50px; background: rgba(16,84,156,0.05); border-radius: 50%; }
.luxury-card h3 { font-size: 1.4rem; margin-bottom: 15px; font-weight: 700; color: var(--primary-dark); }
.luxury-card p { color: var(--text-light); margin-bottom: 25px; line-height: 1.7; font-size: 0.95rem; }
.read-more { margin-top: auto; color: var(--primary-color); font-weight: 600; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 1.5px; display: inline-flex; align-items: center; transition: gap 0.3s ease; }
.read-more:hover { gap: 10px; color: var(--primary-dark); }
.read-more::after { content: '→'; font-size: 1.1rem; }


/* Luxury Project Card */
.project-card { display: flex; flex-direction: column; background: transparent; transition: all 0.4s ease; cursor: pointer; height: 100%; }
.project-card .img-wrapper { width: 100%; height: 320px; overflow: hidden; border-radius: 8px; box-shadow: 0 10px 30px rgba(0,0,0,0.1); }
.project-card .img-wrapper img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.project-card:hover .img-wrapper img { transform: scale(1.05); }
.project-card .content-box { background: #fff; margin: -50px 20px 0 20px; position: relative; z-index: 2; padding: 35px; border-radius: 8px; box-shadow: 0 15px 40px rgba(0,0,0,0.08); display: flex; flex-direction: column; flex: 1; border-top: 3px solid var(--primary-color); transition: transform 0.4s ease; }
.project-card:hover .content-box { transform: translateY(-5px); }
.project-card .location { font-size: 0.85rem; color: var(--primary-color); font-weight: 600; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 10px; }
.project-card h3 { font-size: 1.4rem; color: var(--primary-dark); margin-bottom: 15px; }
.project-card p { color: var(--text-light); line-height: 1.6; font-size: 0.95rem; margin-bottom: 25px; }
.project-card .btn-link { margin-top: auto; display: inline-flex; align-items: center; color: var(--primary-dark); font-weight: 700; font-size: 0.9rem; text-transform: uppercase; transition: all 0.3s; }
.project-card .btn-link:hover { color: var(--primary-color); gap: 8px; }
.project-card .btn-link::after { content: '→'; margin-left: 5px; font-size: 1.2rem; transition: margin 0.3s; }
.project-card:hover .btn-link::after { margin-left: 10px; }

/* Zig-Zag Service Layout */
.service-list { display: flex; flex-direction: column; gap: 80px; margin-top: 50px; }
.service-row { display: flex; align-items: center; gap: 60px; }
.service-row.reverse { flex-direction: row-reverse; }
.service-row .service-img { flex: 1.2; border-radius: 12px; overflow: hidden; box-shadow: 0 20px 50px rgba(0,0,0,0.08); height: 420px; position: relative; }
.service-row .service-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s ease; }
.service-row:hover .service-img img { transform: scale(1.05); }
.service-row .service-text { flex: 1; padding: 20px; }
.service-row .service-num { display: block; font-size: 5rem; font-weight: 800; color: rgba(16,84,156,0.08); margin-bottom: -25px; line-height: 1; font-family: 'Inter', sans-serif; }
.service-row h3 { font-size: 2.2rem; color: var(--primary-dark); margin-bottom: 20px; position: relative; z-index: 2; }
.service-row p { font-size: 1.1rem; color: var(--text-light); line-height: 1.8; margin-bottom: 30px; }

@media (max-width: 900px) {
  .service-row, .service-row.reverse { flex-direction: column; gap: 30px; }
  .service-row .service-img { height: 300px; width: 100%; }
}

.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 30px; margin-top: 40px; }
.dark-section { background-color: var(--primary-dark); color: #fff; padding: 100px 0; }
.dark-section .section-title h2 { color: #fff; }
.dark-section .section-title h2::after { background-color: rgba(255,255,255,0.3); }
.dark-section p { color: rgba(255,255,255,0.7); }