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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, #0c0c0c 0%, #1a1a2e 50%, #16213e 100%);
    color: #ffffff;
    overflow-x: hidden;
    line-height: 1.6;
}

/* Animated background particles */
.bg-particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: float 20s infinite linear;
}

@keyframes float {
    0% { transform: translateY(100vh) rotate(0deg); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { transform: translateY(-100vh) rotate(360deg); opacity: 0; }
}

/* Header */
header {
    position: fixed;
    top: 0;
    width: 100%;
    backdrop-filter: blur(20px);
    background: rgba(0, 0, 0, 0.3);
    z-index: 1000;
    padding: 0.8rem 1.6rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

/* Logo - Updated for image */
.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 40px;
    width: auto;
    transition: transform 0.3s ease;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

.logo img:hover {
    transform: scale(1.05);
}

/* Fallback for broken images */
.logo img[src=""] {
    display: none;
}

.logo img[src=""]:after {
    content: "VISTARA UNIVERSE";
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(45deg, #ff6b6b, #4ecdc4, #45b7d1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
}

.nav-links a {
    color: #ffffff;
    text-decoration: none;
    transition: color 0.3s ease;
    font-weight: 500;
    font-size: 0.9rem;
    position: relative;
}

.nav-links a:hover {
    color: #4ecdc4;
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background: linear-gradient(45deg, #ff6b6b, #4ecdc4, #45b7d1);
    transition: width 0.3s;
}

.nav-links a:hover::after {
    width: 100%;
}

.mobile-menu {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.3s ease;
}

.mobile-menu:hover {
    color: #4ecdc4;
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 1.6rem;
    position: relative;
}

.hero-content {
    max-width: 640px;
    z-index: 10;
}

.hero h1 {
    font-size: clamp(2.4rem, 6.4vw, 4.8rem);
    font-weight: 800;
    margin-bottom: 0.8rem;
    background: linear-gradient(269deg, #e50369, #138efa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 400% 400%;
    animation: gradientShift 4s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero p {
    font-size: 1rem;
    margin-bottom: 1.6rem;
    opacity: 0.9;
    color: #e0e0e0;
}

.cta-button {
    display: inline-block;
    padding: 0.8rem 1.6rem;
    background: linear-gradient(269deg, #e50369, #138efa);
    color: white;
    text-decoration: none;
    border-radius: 40px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 6px 25px rgba(255, 107, 107, 0.3);
    font-size: 0.9rem;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 32px rgba(255, 107, 107, 0.4);
}

/* Main Content */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.6rem;
}

.section {
    padding: 4rem 0;
    margin-bottom: 2.4rem;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2.4rem;
    text-align: center;
    background: linear-gradient(45deg, #ff6b6b, #4ecdc4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.4rem;
    margin-top: 2.4rem;
}

.about-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 1.6rem;
    transition: all 0.3s ease;
}

.about-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.3);
    border-color: rgba(78, 205, 196, 0.3);
}

.about-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.8rem;
    color: #4ecdc4;
}

.about-card p {
    opacity: 0.9;
    line-height: 1.6;
    font-size: 0.9rem;
}

/* Pricing Plans */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.2rem;
    margin-top: 2.4rem;
}

.plan-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 1.2rem;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.plan-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border-color: rgba(78, 205, 196, 0.5);
}

.plan-card.featured {
    border: 2px solid #4ecdc4;
    background: rgba(78, 205, 196, 0.1);
}

.plan-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.6rem;
    color: #4ecdc4;
}

.plan-price {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #ffffff;
}

.plan-price span {
    font-size: 0.7rem;
    opacity: 0.7;
}

.plan-features {
    list-style: none;
    margin-bottom: 1.2rem;
    text-align: left;
}

.plan-features li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.3rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.75rem;
}

.check {
    color: #4ecdc4;
    font-size: 1rem;
}

.cross {
    color: #ff6b6b;
    font-size: 1rem;
}

.plan-button {
    width: 100%;
    padding: 0.6rem;
    background: linear-gradient(269deg, #e50369, #138efa);
    color: white;
    border: none;
    border-radius: 40px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    font-size: 0.8rem;
}

.plan-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255, 107, 107, 0.3);
}

/* Terms Section */
.terms {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 16px;
    padding: 2.4rem;
    margin: 2.4rem 0;
}

.terms h3 {
    color: #4ecdc4;
    margin-bottom: 1.2rem;
    font-size: 1.2rem;
}

.terms ul {
    list-style: none;
    padding-left: 0;
}

.terms li {
    margin-bottom: 0.8rem;
    padding-left: 1.6rem;
    position: relative;
    font-size: 0.9rem;
}

.terms li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #4ecdc4;
    font-weight: bold;
}

/* Contact Section */
.contact-info {
    text-align: center;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 16px;
    padding: 2.4rem;
    margin: 2.4rem 0;
}

.contact-info p {
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.contact-info a {
    color: #4ecdc4;
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-info a:hover {
    color: #45b7d1;
    text-decoration: underline;
}

/* Footer */
footer {
    background: rgba(0, 0, 0, 0.8);
    padding: 2.4rem 0;
    text-align: center;
    margin-top: 4rem;
}

footer a {
    color: #4ecdc4;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* Scroll animations */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(0, 0, 0, 0.95);
        flex-direction: column;
        padding: 1rem;
        gap: 1rem;
        backdrop-filter: blur(20px);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .mobile-menu {
        display: block;
    }
    
    .logo img {
        height: 35px;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 0.9rem;
    }
    
    .pricing-grid {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
        gap: 1rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .section {
        padding: 3rem 0;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    header {
        padding: 0.6rem 1rem;
    }
    
    .plan-card {
        padding: 1rem;
    }
    
    .terms {
        padding: 1.5rem;
    }
    
    .contact-info {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .pricing-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .plan-features li {
        font-size: 0.7rem;
    }
    
    .plan-button {
        font-size: 0.75rem;
        padding: 0.5rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .logo img {
        height: 30px;
    }
}

@media (max-width: 360px) {
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .logo img {
        height: 28px;
    }
}