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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    min-height: 100vh;
    color: #fff;
    padding: 20px;
}

.container {
    max-width: 700px;
    margin: 0 auto;
    padding: 30px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

h1 {
    text-align: center;
    margin-bottom: 10px;
    color: #00d9ff;
    font-size: 1.8rem;
}

.subtitle {
    text-align: center;
    color: #aaa;
    margin-bottom: 30px;
    font-size: 0.95rem;
}

.upload-section {
    text-align: center;
    margin-bottom: 20px;
}

.file-label {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 30px;
    background: linear-gradient(135deg, #0f3460 0%, #16213e 100%);
    border: 2px dashed #00d9ff;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.file-label:hover {
    background: linear-gradient(135deg, #16213e 0%, #0f3460 100%);
    border-color: #00ff88;
}

.file-icon {
    font-size: 1.5rem;
}

.file-text {
    font-size: 1rem;
}

#file-input {
    display: none;
}

.file-name {
    margin-top: 10px;
    color: #00ff88;
    font-size: 0.9rem;
}

.name-section {
    margin-bottom: 25px;
}

.name-section label {
    display: block;
    margin-bottom: 8px;
    color: #ccc;
}

.name-section input {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    color: #fff;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.name-section input:focus {
    outline: none;
    border-color: #00d9ff;
}

.name-section input::placeholder {
    color: #666;
}

.convert-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #00d9ff 0%, #00ff88 100%);
    border: none;
    border-radius: 10px;
    color: #1a1a2e;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
}

.convert-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 217, 255, 0.4);
}

.convert-btn:disabled {
    background: #444;
    color: #888;
    cursor: not-allowed;
}

.result-section {
    margin-top: 30px;
}

.result-section h2 {
    margin-bottom: 15px;
    color: #00ff88;
}

.button-group {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.action-btn {
    flex: 1;
    padding: 10px 20px;
    background: rgba(0, 217, 255, 0.2);
    border: 1px solid #00d9ff;
    border-radius: 8px;
    color: #00d9ff;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.action-btn:hover {
    background: rgba(0, 217, 255, 0.4);
}

#result {
    width: 100%;
    height: 300px;
    padding: 15px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: #00ff88;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.85rem;
    resize: vertical;
}

.copy-message {
    margin-top: 10px;
    color: #00ff88;
    text-align: center;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.error-section {
    margin-top: 20px;
    padding: 15px;
    background: rgba(255, 0, 0, 0.1);
    border: 1px solid #ff4444;
    border-radius: 8px;
}

#error-message {
    color: #ff6666;
    text-align: center;
}

.hidden {
    display: none !important;
}

.multisparrow-section {
    margin-bottom: 20px;
    padding: 15px;
    background: rgba(0, 217, 255, 0.1);
    border: 1px solid rgba(0, 217, 255, 0.3);
    border-radius: 10px;
}

.info-text {
    color: #00d9ff;
    margin-bottom: 15px;
    font-size: 0.9rem;
}

.xml-upload-item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    padding: 10px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 8px;
}

.xml-upload-item label {
    flex: 1;
    color: #ccc;
    font-size: 0.9rem;
}

.xml-upload-item input[type="file"] {
    display: none;
}

.xml-upload-btn {
    padding: 8px 16px;
    background: rgba(0, 255, 136, 0.2);
    border: 1px solid #00ff88;
    border-radius: 6px;
    color: #00ff88;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.xml-upload-btn:hover {
    background: rgba(0, 255, 136, 0.4);
}

.xml-upload-btn.loaded {
    background: rgba(0, 255, 136, 0.5);
    color: #fff;
}

.options-section {
    margin-bottom: 20px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #ccc;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: #00d9ff;
}