:root {
    --primary: #00f0c9;
    --secondary: #6835e9;
    --light: #fffcfe;
    --dark: #1a1a1a;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background-color: var(--light);
    overflow-x: hidden;
}

body.preloader-active {
    overflow: hidden;
}

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

/* Video Preloader Styles */
.video-preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: #000;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.video-preloader.fade-out {
    opacity: 0;
    visibility: hidden;
}

.preloader-content {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.intro-video {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: none;
}

.intro-video.playing {
    display: block;
}

.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    transition: opacity 0.5s ease;
}

.loading-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-text {
    color: white;
    font-size: 1.2rem;
    font-weight: 500;
}

.loading-bar {
    width: 80%;
    max-width: 400px;
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    overflow: hidden;
}

.loading-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    width: 0%;
    transition: width 0.3s ease;
}

/* Responsive video adjustments */
@media (max-width: 767px) {
    .intro-video {
        object-fit: cover;
    }
}

@media (min-width: 768px) {
    .intro-video {
        object-fit: contain;
    }
}

/* Navbar */
.navbar {
    background-color: var(--light);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    height: 60px;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
    max-width: 1200px;
    margin: 0 auto;
    height: 100%;
}

.logo {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--secondary);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    padding: 5px;
}

.hamburger span {
    display: block;
    width: 20px;
    height: 2px;
    background-color: var(--secondary);
    transition: all 0.3s ease;
}

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

.nav-links a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    transition: color 0.3s ease;
    font-size: 20px;
}

.nav-links a:hover {
    color: var(--secondary);
}

.login-btn {
    background-color: var(--secondary);
    color: var(--light) !important;
    padding: 8px 16px;
    border-radius: 20px;
    transition: background-color 0.3s ease;
}

.login-btn:hover {
    background-color: var(--primary);
}

.close-menu {
    display: none;
    background: none;
    border: none;
    color: var(--secondary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 5px;
}

/* Hero Section */
.hero {
    height: 100vh;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--light);
    padding-top: 80px;
    position: relative;
    overflow: hidden;
}

.hero-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}

.hero-video-desktop {
    display: block;
}

.hero-video-mobile {
    display: none;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: 2;
}

.hero-content {
    max-width: 800px;
    padding: 2rem;
    position: relative;
    z-index: 3;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.subtitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.social-icon {
    color: var(--light);
    font-size: 1.5rem;
    transition: transform 0.3s ease;
}

.social-icon:hover {
    transform: translateY(-3px);
}

/* About Section */
.about {
    padding: 5rem 0;
    background-color: var(--light);
}

.about h2 {
    text-align: center;
    color: var(--secondary);
    margin-bottom: 3rem;
    font-size: 2.5rem;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.stat-item {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.number {
    display: block;
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--secondary);
    margin-bottom: 0.5rem;
}

.label {
    color: var(--dark);
    font-size: 1rem;
}

/* Projects Section */
.projects {
    padding: 5rem 0;
    background-color: #f8f9fa;
}

.projects h2 {
    text-align: center;
    color: var(--secondary);
    margin-bottom: 3rem;
    font-size: 2.5rem;
}

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

.project-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
}

.project-icon {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.project-card h3 {
    color: var(--secondary);
    margin-bottom: 1rem;
}

/* Contact Section */
.contact {
    padding: 5rem 0;
    background-color: var(--light);
}

.contact h2 {
    text-align: center;
    color: var(--secondary);
    margin-bottom: 3rem;
    font-size: 2.5rem;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-form input,
.contact-form textarea {
    padding: 1rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
}

.contact-form textarea {
    height: 150px;
    resize: vertical;
}

.btn {
    background-color: var(--secondary);
    color: var(--light);
    padding: 1rem 2rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s ease;
}

.btn:hover {
    background-color: var(--primary);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.info-item i {
    font-size: 1.5rem;
    color: var(--secondary);
}

/* Footer */
footer {
    background-color: var(--dark);
    color: var(--light);
    padding: 2rem 0;
    text-align: center;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
        position: relative;
        z-index: 1000;
    }

    .close-menu {
        display: block;
        position: fixed;
        top: 15px;
        right: 20px;
        z-index: 1001;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease, visibility 0.3s ease;
    }

    .nav-links.active + .close-menu {
        opacity: 1;
        visibility: visible;
    }

    .nav-links {
        position: fixed;
        top: 60px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 60px);
        background-color: var(--light);
        flex-direction: column;
        align-items: center;
        padding: 2rem 0;
        transition: left 0.3s ease;
        z-index: 999;
    }

    .nav-links.active {
        left: 0;
    }

    .login-item {
        margin-top: 1rem;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

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

    .hero-video-desktop {
        display: none;
    }

    .hero-video-mobile {
        display: block;
    }

    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
    }

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

/* News Section Styles */
.news {
    padding: 80px 0;
    background-color: #fafafa;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.news-card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: transform 0.3s ease;
}

.news-card:hover {
    transform: translateY(-5px);
}

.news-image {
    width: 100%;
    height: 300px;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-content {
    padding: 20px;
}

.news-content h3 {
    margin: 0 0 10px 0;
    font-size: 1.2rem;
    color: #333;
}

.news-content p {
    margin: 0 0 15px 0;
    color: #666;
    line-height: 1.5;
}

.news-actions {
    display: flex;
    gap: 15px;
    padding-top: 15px;
    border-top: 1px solid #eee;
}

.like-btn, .share-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    color: #666;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: color 0.3s ease;
}

.like-btn:hover, .share-btn:hover {
    color: #e1306c;
}

.like-btn i {
    transition: transform 0.3s ease;
}

.like-btn:hover i {
    transform: scale(1.2);
}

.like-btn.active {
    color: #e1306c;
}

.like-btn.active i {
    animation: heartBeat 0.3s ease;
}

@keyframes heartBeat {
    0% { transform: scale(1); }
    50% { transform: scale(1.3); }
    100% { transform: scale(1); }
}