body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    background-color: #1a1a1a;
    color: white;
    font-family: 'Inter', Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.snow-container {
    position: fixed;
    width: 100vw;
    height: 100vh;
    top: 0;
    left: 0;
    pointer-events: none;
}

.snow {
    position: absolute;
    width: 4px;
    height: 4px;
    background: white;
    border-radius: 50%;
    opacity: 0.2;
    animation: fall linear infinite;
}

@keyframes fall {
    to {
        transform: translateY(100vh);
    }
}

.container {
    background: rgba(26, 26, 26, 0.8);
    backdrop-filter: blur(10px);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.5);
    text-align: center;
    max-width: 500px;
    width: 90%;
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.glow-effect {
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from {
        box-shadow: 0 0 20px rgba(76, 175, 80, 0.2);
    }
    to {
        box-shadow: 0 0 30px rgba(76, 175, 80, 0.4);
    }
}

h1 {
    margin-bottom: 2rem;
    font-weight: 700;
    font-size: 2.5rem;
    background: linear-gradient(45deg, #4CAF50, #45a049);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.upload-box {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.file-input-label {
    padding: 2rem;
    border: 2px dashed rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    background-color: rgba(255, 255, 255, 0.05);
    cursor: pointer;
    transition: all 0.3s ease;
}

.file-input-label:hover {
    border-color: var(--glow-color);
    background-color: rgba(76, 175, 80, 0.1);
}

.file-input-label.drag-over {
    border-color: var(--glow-color);
    background-color: rgba(76, 175, 80, 0.15);
    transform: scale(1.02);
}

.upload-icon {
    margin-bottom: 1rem;
}

.upload-icon svg {
    width: 48px;
    height: 48px;
    stroke: var(--glow-color);
}

.upload-text {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.8);
}

.upload-button {
    padding: 1rem 2rem;
    background: linear-gradient(45deg, #4CAF50, #45a049);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 600;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.upload-button:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(76, 175, 80, 0.4);
}

.upload-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.upload-status {
    margin-top: 1.5rem;
    font-size: 1.1rem;
    min-height: 24px;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease;
}

.upload-status.show {
    opacity: 1;
    transform: translateY(0);
}

.upload-link {
    margin-top: 1rem;
}

.upload-link a {
    color: var(--glow-color);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.upload-link a:hover {
    text-decoration: underline;
    opacity: 0.9;
}

@keyframes progress {
    0% {
        width: 0%;
    }
    100% {
        width: 100%;
    }
}

.progress-bar {
    height: 4px;
    background: linear-gradient(90deg, #4CAF50, #45a049);
    position: absolute;
    bottom: 0;
    left: 0;
    border-radius: 0 0 20px 20px;
    animation: progress 2s ease-in-out;
}