:root {
    --bg-color: #0a0e17;
    --card-bg: rgba(255, 255, 255, 0.05);
    --primary-color: #00f2ff;
    --secondary-color: #7000ff;
    --text-color: #ffffff;
    --text-muted: #a0a0a0;
    --font-main: 'Inter', sans-serif;
    --transition: all 0.3s ease;
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 20px 0;
    background: rgba(10, 14, 23, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 1px;
}

.logo span {
    color: var(--primary-color);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

nav a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

nav a:hover {
    color: var(--primary-color);
}

/* Hero Section */
#hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

#hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 242, 255, 0.1) 0%, rgba(10, 14, 23, 0) 60%);
    animation: rotate 20s linear infinite;
    z-index: -1;
}

@keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

#hero h1 {
    font-size: 4rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

#hero h1 span {
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

#hero p {
    font-size: 1.5rem;
    color: var(--text-muted);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.btn {
    display: inline-block;
    padding: 15px 40px;
    border-radius: 30px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    margin: 0 10px;
}

.btn-primary {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: #fff;
    box-shadow: 0 4px 15px rgba(0, 242, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 242, 255, 0.5);
}

.btn-secondary {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-secondary:hover {
    background: rgba(0, 242, 255, 0.1);
}

/* Features Section */
#features {
    padding: 100px 0;
    background: #0d121f;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--primary-color);
    margin: 10px auto 0;
    border-radius: 2px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--card-bg);
    padding: 40px 30px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.feature-card .icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.feature-card p {
    color: var(--text-muted);
}

/* Contact Section */
#contact {
    padding: 100px 0;
    text-align: center;
}

.qr-container {
    display: flex;
    justify-content: center;
    gap: 60px;
    flex-wrap: wrap;
}

.qr-card {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.qr-card:hover {
    transform: scale(1.05);
    border-color: var(--primary-color);
}

.qr-wrapper {
    background: #fff;
    padding: 10px;
    border-radius: 10px;
    margin-bottom: 20px;
    width: 220px;
    height: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qr-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.qr-card h3 {
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.qr-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Footer */
footer {
    padding: 40px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: var(--text-muted);
}

.keywords {
    margin-top: 15px;
    font-size: 0.8rem;
    opacity: 0.6;
}

.keywords span {
    margin: 0 10px;
}

/* Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

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

.delay-1 { transition-delay: 0.2s; }
.delay-2 { transition-delay: 0.4s; }

/* Responsive */
@media (max-width: 768px) {
    #hero h1 {
        font-size: 2.5rem;
    }
    
    #hero p {
        font-size: 1.1rem;
    }
    
    .qr-container {
        gap: 30px;
    }
    
    nav {
        display: none; /* Simplify for mobile for now, or add hamburger menu if needed */
    }
}