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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f8f9fa;
    overflow-x: hidden;
}

/* Animated Neural Network Background */
#neural-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

.neuron {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(74, 144, 226, 0.3);
    border-radius: 50%;
    animation: pulse 3s infinite ease-in-out;
}

.connection {
    position: absolute;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(74, 144, 226, 0.2), transparent);
    transform-origin: left;
    animation: flow 4s infinite linear;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.3; }
    50% { transform: scale(1.5); opacity: 0.8; }
}

@keyframes flow {
    0% { opacity: 0; }
    50% { opacity: 1; }
    100% { opacity: 0; }
}

/* Header */
header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    color: #4a90e2;
    text-decoration: none;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a:hover {
    color: #4a90e2;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #4a90e2;
    transition: width 0.3s ease;
}

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

/* Main Content */
main {
    margin-top: 80px;
}

/* Hero Section */
.hero {
    padding: 4rem 2rem;
    text-align: center;
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.1), rgba(142, 68, 173, 0.1));
    position: relative;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    color: #2c3e50;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    color: #666;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    background: linear-gradient(45deg, #4a90e2, #8e44ad);
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.3);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(74, 144, 226, 0.4);
}

/* Features Section */
.features {
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid rgba(74, 144, 226, 0.1);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(45deg, #4a90e2, #8e44ad);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    font-size: 3rem;
    color: #4a90e2;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.feature-card p {
    color: #666;
    margin-bottom: 1.5rem;
}

.feature-link {
    color: #4a90e2;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.3s ease;
}

.feature-link:hover {
    color: #8e44ad;
}

/* Contact Form */
.contact {
    background: #2c3e50;
    color: white;
    padding: 4rem 2rem;
}

.contact-content {
    max-width: 800px;
    margin: 0 auto;
}

.contact h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 2rem;
}

.contact-form {
    display: grid;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    padding: 1rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: border-color 0.3s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #4a90e2;
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.2);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.submit-btn {
    background: linear-gradient(45deg, #4a90e2, #8e44ad);
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    justify-self: center;
    width: fit-content;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.3);
}

/* Footer */
footer {
    background: #1a252f;
    color: rgba(255, 255, 255, 0.8);
    padding: 2rem;
    text-align: center;
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

.footer-content p {
    margin-bottom: 1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .logo {
        font-size: 1rem;
    }
    .nav-links {
        display: none;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .contact-form {
        gap: 1rem;
    }
}

/* Scroll animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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


     /* Additional styles for video player */
 .video-player-container {
     max-width: 1200px;
     margin: 0 auto;
     padding: 2rem;
 }

.video-section {
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    overflow: hidden;
    margin-bottom: 30px;
}

.video-header {
    padding: 1rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.video-header h1 {
    margin: 0;
    font-size: 2.5rem;
    font-weight: 300;
    letter-spacing: 1px;
}

.video-controls-top {
    padding: 20px 20px 15px 20px;
    background: white;
    border-bottom: 1px solid #f0f0f0;
}

.progress-container {
    margin-bottom: 15px;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.progress-percentage {
    font-size: 14px;
    font-weight: 600;
    color: #4a90e2;
}

.progress-time {
    font-size: 12px;
    color: #888;
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: #f0f0f0;
    border-radius: 3px;
    overflow: hidden;
    position: relative;
    cursor: pointer;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #4a90e2 0%, #8e44ad 100%);
    border-radius: 3px;
    transition: width 0.3s ease;
    width: 0%;
}

.control-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    align-items: center;
}

.control-btn {
    background: linear-gradient(45deg, #4a90e2, #8e44ad);
    color: white;
    border: none;
    border-radius: 50px;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.3);
    display: flex;
    align-items: center;
    gap: 8px;
}

.control-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(74, 144, 226, 0.4);
}

.control-btn:active {
    transform: translateY(0);
}

.control-btn.pause {
    background: linear-gradient(45deg, #667eea, #764ba2);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.control-btn.pause:hover {
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.control-btn.restart {
    background: linear-gradient(45deg, #ff9a56, #ff6b6b);
    box-shadow: 0 4px 15px rgba(255, 154, 86, 0.3);
}

.control-btn.restart:hover {
    box-shadow: 0 6px 20px rgba(255, 154, 86, 0.4);
}

.video-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #000;
    max-height: 100px;
}

video {
    width: 100%;
    height: 100%;
    display: block;
}

.status-info {
    padding: 5px 10px;
    background: #f8f9fa;
    font-size: 12px;
    color: #666;
    text-align: center;
}

.ads-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    margin: 30px auto;
    max-width: 100%;
}

.ad-banner {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #4a90e2 0%, #8e44ad 100%);
    border-radius: 15px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    font-weight: 600;
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.ad-banner:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 35px rgba(0,0,0,0.15);
}

.ad-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.1), transparent);
    transform: rotate(45deg);
    transition: all 0.6s ease;
    opacity: 0;
}

.ad-banner:hover::before {
    animation: shimmer 1.5s ease-in-out;
}

@keyframes shimmer {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); opacity: 0; }
    50% { opacity: 1; }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); opacity: 0; }
}

.ad-banner .ad-icon {
    font-size: 48px;
    margin-bottom: 15px;
}

.ad-banner .ad-text {
    font-size: 16px;
    margin-bottom: 8px;
}

.ad-banner .ad-subtext {
    font-size: 12px;
    opacity: 0.8;
}

@media (max-width: 768px) {
    main {
        margin-top: 60px;
    }
    .video-wrapper {
        max-height: 1px;
    }
    .video-player-container {
        padding: 1rem;
    }

    .video-header h1 {
        font-size: 1.1rem;
    }
    .video-header {
        padding: 0.5rem;
    }

    .control-buttons {
        flex-direction: column;
        gap: 10px;
    }

    .control-btn {
        width: 100%;
        justify-content: center;
    }

    .ad-banner {
        width: 280px;
        height: 280px;
    }
}

@media (max-width: 480px) {
    .ad-banner {
        width: 260px;
        height: 260px;
    }
}