:root {
--primary: #FF5722;
--secondary: #1A237E;
--accent: #FFC107;

/* Light Mode */
--bg-color: #f9f9f9;
--text-color: #333333;
--card-bg: #ffffff;
--nav-bg: #ffffff;
--section-bg-alt: #eaeaea;
--shadow: 0 4px 15px rgba(0,0,0,0.08);
--border-color: #dddddd;


}

body.dark-mode {
--bg-color: #121212;
--text-color: #f0f0f0;
--card-bg: #1e1e1e;
--nav-bg: #1e1e1e;
--section-bg-alt: #2c2c2c;
--shadow: 0 4px 15px rgba(0,0,0,0.4);
--border-color: #333333;
--secondary: #3949ab;
}

{ margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Poppins', 'Noto Sans Tamil', sans-serif; line-height: 1.6; color: var(--text-color); background-color: var(--bg-color); transition: background-color 0.3s, color 0.3s; }

/* Navbar */
.navbar { display: flex; justify-content: space-between; align-items: center; background: var(--nav-bg); padding: 0.8rem 5%; box-shadow: var(--shadow); position: sticky; top: 0; z-index: 1000; }
.brand-container { display: flex; align-items: center; gap: 15px; }
.logo-link { display: flex; align-items: center; text-decoration: none; gap: 15px; }
.brand-logo { height: 60px; width: auto; }
.brand-name { height: 80px; width: auto; object-fit: contain; }
.nav-links { list-style: none; display: flex; align-items: center; gap: 20px; }
.nav-links a { text-decoration: none; color: var(--text-color); font-weight: 500; transition: color 0.3s; }
.nav-links a:hover, .nav-links a.active-link { color: var(--primary); }
.lang-btn { background: var(--primary); color: #fff !important; padding: 5px 15px; border-radius: 20px; }
.theme-btn { background: none; border: none; color: var(--text-color); font-size: 1.2rem; cursor: pointer; padding: 5px; }
.theme-btn:hover { color: var(--primary); }

/* Hero */
.hero { background: url('https://images.unsplash.com/photo-1469854523086-cc02fe5d8800?q=80&w=1600&auto=format&fit=crop') no-repeat center center/cover; height: 70vh; display: flex; align-items: center; justify-content: center; text-align: center; color: white; position: relative; }
.hero-overlay { position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0, 0, 0, 0.4); }
.hero-content { position: relative; z-index: 1; padding: 0 20px; }
.hero h1 { font-size: 3rem; margin-bottom: 1rem; text-shadow: 2px 2px 4px rgba(0,0,0,0.5); }
.hero p { font-size: 1.2rem; margin-bottom: 2rem; }
.btn { display: inline-block; background: var(--primary); color: white; padding: 12px 30px; text-decoration: none; border-radius: 5px; border: none; cursor: pointer; font-size: 1rem; font-weight:600; transition: background 0.3s; }
.btn:hover { background: var(--secondary); color: white; }
.btn-outline { background: transparent; border: 2px solid var(--primary); color: var(--primary); margin-right: 10px; }
.btn-outline:hover { background: var(--primary); color: white; }

/* Layouts */
.container { max-width: 1200px; margin: auto; padding: 4rem 1rem; }
.section-padding { padding: 4rem 1rem; }
.section-title { text-align: center; margin-bottom: 3rem; font-size: 2rem; color: var(--primary); }
.bg-light { background: var(--section-bg-alt); }
.text-center { text-align: center; }

/* UX Enhancements: Why Us & Testimonials */
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; text-align: center; margin-top: 30px; }
.feature-box i { font-size: 2.5rem; color: var(--accent); margin-bottom: 15px; }
.testimonial-card { background: var(--card-bg); padding: 20px; border-left: 5px solid var(--primary); border-radius: 8px; box-shadow: var(--shadow); font-style: italic; margin-bottom:20px; }
.testimonial-author { font-weight: bold; margin-top: 10px; font-style: normal; color: var(--primary); }

/* Floating WhatsApp Button */
.float-wa { position: fixed; width: 60px; height: 60px; bottom: 40px; right: 40px; background-color: #25d366; color: #FFF; border-radius: 50px; text-align: center; font-size: 35px; box-shadow: 2px 2px 10px rgba(0,0,0,0.3); z-index: 1000; line-height: 60px; transition: transform 0.3s; }
.float-wa:hover { transform: scale(1.1); color: #fff; }

/* Grid Cards */
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }
.card { background: var(--card-bg); padding: 2rem; text-align: center; border-radius: 10px; box-shadow: var(--shadow); transition: transform 0.3s; display: flex; flex-direction: column; justify-content: space-between; }
.card:hover { transform: translateY(-5px); }
.card-icon { font-size: 3rem; color: var(--primary); margin-bottom: 1rem; }
.card h3 { margin-bottom: 10px; color: var(--text-color); }
.card p { color: var(--text-color); opacity: 0.8; margin-bottom: 15px; }

/* Forms & Contacts */
.contact-wrapper { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: start; }
.contact-info { background: var(--primary); color: white; padding: 3rem; border-radius: 10px; box-shadow: var(--shadow); }
.info-item { margin-bottom: 2rem; }
.info-item i { font-size: 1.5rem; margin-bottom: 10px; display: block; }
.info-item h3 { margin-bottom: 5px; font-size: 1.2rem; }
.info-item p { opacity: 0.9; }
.form-container { background: var(--card-bg); padding: 2rem; border-radius: 10px; box-shadow: var(--shadow); }
.form-tabs { display: flex; justify-content: space-around; margin-bottom: 2rem; border-bottom: 1px solid #ddd; }
.tab-btn { background: none; border: none; padding: 10px; cursor: pointer; font-weight: bold; color: var(--text-color); font-size: 1rem; border-bottom: 3px solid transparent; }
.tab-btn.active { border-bottom: 3px solid var(--primary); color: var(--primary); }
.contact-form { display: none; }
.contact-form.active-form { display: block; }
input, textarea { width: 100%; padding: 12px; margin-bottom: 15px; border: 1px solid #ddd; border-radius: 5px; background: var(--bg-color); color: var(--text-color); font-family:inherit;}
.form-group { margin-bottom: 15px; }
.form-group label { display: block; margin-bottom: 5px; color: var(--text-color); }

/* Modals */
.modal { display: none; position: fixed; z-index: 2000; left: 0; top: 0; width: 100%; height: 100%; overflow: auto; background-color: rgba(0,0,0,0.8); backdrop-filter: blur(5px); }
.modal-content { background-color: var(--card-bg); color: var(--text-color); margin: 5% auto; padding: 30px; border-radius: 10px; width: 90%; max-width: 650px; position: relative; box-shadow: 0 5px 15px rgba(0,0,0,0.3); animation: slideDown 0.4s ease; }
@keyframes slideDown { from { transform: translateY(-50px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
.close-modal { color: #aaa; position: absolute; right: 20px; top: 20px; font-size: 28px; font-weight: bold; cursor: pointer; }
.close-modal:hover { color: var(--primary); }
.itinerary-day { border-left: 3px solid var(--primary); padding-left: 15px; margin-bottom: 15px; }
.itinerary-day h4 { color: var(--primary); margin-bottom: 5px; font-size: 1.1rem; }

/* Footer */
footer { background: #1a1a1a; color: white; padding: 2rem 0; text-align: center; }
.social-links a { color: white; margin: 0 10px; font-size: 1.5rem; transition: color 0.3s; }
.social-links a:hover { color: var(--primary); }

/* Mobile */
.burger { display: none; cursor: pointer; }
.burger div { width: 25px; height: 3px; background-color: var(--text-color); margin: 5px; transition: all 0.3s ease; }
@media (max-width: 992px) {
.nav-links { position: fixed; right: 0px; height: 100vh; top: 0; background-color: var(--nav-bg); display: flex; flex-direction: column; align-items: center; justify-content: center; width: 70%; transform: translateX(100%); transition: transform 0.3s ease-in; z-index: 1001; gap:30px; }
.nav-links.nav-active { transform: translateX(0%); box-shadow: -5px 0 15px rgba(0,0,0,0.2); }
.burger { display: block; z-index: 1002;}
.toggle .line1 { transform: rotate(-45deg) translate(-5px, 6px); }
.toggle .line2 { opacity: 0; }
.toggle .line3 { transform: rotate(45deg) translate(-5px, -6px); }
}
@media (max-width: 768px) {
.contact-wrapper { grid-template-columns: 1fr; }
.brand-logo { height: 40px; }
.brand-name { height: 50px; }
.hero h1 { font-size: 2.2rem; }
}