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

body {
    font-family: sans-serif;
    background: linear-gradient(135deg, #1C69D4 0%, #FFFFFF 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

footer {
    padding-top: 10px;
    color: #305563;
}

a {
    color: #0c5460;
}

.information {
    color: #888;
    text-align: center;
}

.container {
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    padding: 40px;
    max-width: 600px;
}

h1 {
    color: #333;
    margin-bottom: 10px;
    font-size: 28px;
    text-align: center;
}

.subtitle {
    color: #666;
    text-align: center;
    margin-bottom: 30px;
    font-size: 14px;
}

.drop-zone {
    border: 3px dashed #ccc;
    border-radius: 12px;
    padding: 60px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: #fafafa;
    margin-bottom: 20px;
}

.drop-zone.drag-over {
    border-color: #667eea;
    background: #f0f4ff;
    transform: scale(1.02);
}

.drop-zone:hover {
    border-color: #999;
    background: #f5f5f5;
}

.drop-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.drop-text {
    color: #666;
    font-size: 16px;
    margin-bottom: 8px;
}

.drop-hint {
    color: #999;
    font-size: 13px;
}

.file-input {
    display: none;
}

.btn {
    background: #667eea;
    color: white;
    border: none;
    padding: 12px 32px;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-block;
    text-decoration: none;
    font-weight: 500;
}

.btn:hover {
    background: #5568d3;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

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

.status {
    margin-top: 20px;
    padding: 16px;
    border-radius: 8px;
    text-align: center;
    font-size: 14px;
    display: none;
}

.status.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.status.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.status.info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

@media (max-width: 640px) {
    .container {
        padding: 24px;
    }

    h1 {
        font-size: 24px;
    }

    .drop-zone {
        padding: 40px 20px;
    }
}