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

body {
    font-family: Arial, sans-serif;
    background: #1a1a2e;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    color: #eee;
}

.container {
    background: #16213e;
    border-radius: 8px;
    padding: 30px;
    max-width: 600px;
    width: 100%;
    border: 1px solid #0f3460;
}

h1 {
    color: #00d9ff;
    margin-bottom: 10px;
    font-size: 24px;
    font-weight: normal;
}

h3 {
    color: #aaa;
    margin-bottom: 20px;
    font-size: 14px;
    font-weight: normal;
}

.upload-area {
    border: 2px dashed #0f3460;
    border-radius: 4px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    background: #0f3460;
    transition: all 0.2s;
}

.upload-area:hover {
    background: #1a4d7a;
    border-color: #00d9ff;
}

.upload-area.dragover {
    background: #1a4d7a;
    border-color: #00d9ff;
}

.upload-text {
    color: #00d9ff;
    font-size: 16px;
}

input[type="file"] {
    display: none;
}

.options {
    margin-top: 20px;
}

label {
    display: block;
    color: #aaa;
    margin-bottom: 6px;
    font-size: 13px;
}

input[type="text"], input[type="number"] {
    width: 100%;
    padding: 10px;
    border: 1px solid #0f3460;
    border-radius: 4px;
    font-size: 14px;
    background: #0f3460;
    color: #fff;
    margin-bottom: 15px;
}

input[type="text"]:focus, input[type="number"]:focus {
    outline: none;
    border-color: #00d9ff;
}

.btn {
    width: 100%;
    padding: 12px;
    background: #00d9ff;
    color: #000;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    margin-top: 10px;
}

.btn:hover:not(:disabled) {
    background: #00b8d4;
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.status {
    margin-top: 15px;
    padding: 12px;
    border-radius: 4px;
    font-size: 13px;
    display: none;
}

.status.info {
    background: #1e3a5f;
    color: #00d9ff;
    display: block;
}

.status.success {
    background: #1e5f3a;
    color: #00ff88;
    display: block;
}

.status.error {
    background: #5f1e1e;
    color: #ff6b6b;
    display: block;
}

.file-list {
    margin-top: 15px;
    max-height: 150px;
    overflow-y: auto;
    background: #0f3460;
    border-radius: 4px;
    padding: 10px;
    display: none;
    font-size: 12px;
}

.file-list.show {
    display: block;
}

.file-item {
    padding: 4px 0;
    color: #aaa;
    border-bottom: 1px solid #1a4d7a;
}

.file-item:last-child {
    border-bottom: none;
}

.file-count {
    color: #00d9ff;
    font-weight: bold;
    margin-bottom: 8px;
}

.progress {
    margin-top: 10px;
    height: 4px;
    background: #0f3460;
    border-radius: 2px;
    overflow: hidden;
    display: none;
}

.progress.show {
    display: block;
}

.progress-bar {
    height: 100%;
    background: #00d9ff;
    width: 0%;
    transition: width 0.3s;
}