html {
    scroll-behavior: smooth;
}

.gradient-bg {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
}

.card-hover {
    transition: transform 0.3s ease;
}

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

.drop-area {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    border: 2px dashed #6366f1;
    transition: all 0.3s ease;
}

.drop-area:hover {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2) 0%, rgba(139, 92, 246, 0.2) 100%);
    border-color: #8b5cf6;
}

.feature-card {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.sticky-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    margin: 1rem;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 1rem;
    padding: 1rem;
}

.nav-container {
    width: 100%;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 500;
}

body {
    padding-top: 5rem;
}

#main-container {
    display: none;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

#main-container.show {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

.hamburger {
    display: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.hamburger-line {
    width: 25px;
    height: 3px;
    background-color: white;
    margin: 5px 0;
    transition: all 0.3s ease;
}

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

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

.hamburger.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

.mobile-menu {
    display: none;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 5rem 2rem 2rem;
    z-index: 999;
    transform: translateY(-100%);
    transition: transform 0.3s ease-in-out;
}

.mobile-menu.show {
    display: flex;
    transform: translateY(0);
}

.mobile-menu a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: 1rem;
    text-align: center;
    font-size: 1.2rem;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.mobile-menu.show a {
    opacity: 1;
    transform: translateY(0);
}

.mobile-menu a:nth-child(1) { transition-delay: 0.1s; }
.mobile-menu a:nth-child(2) { transition-delay: 0.2s; }
.mobile-menu a:nth-child(3) { transition-delay: 0.3s; }

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hamburger {
        display: block;
    }

    .sticky-nav {
        margin: 0.5rem;
    }
}