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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
    overflow-x: hidden;
    width: 100%;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
    width: 100%;
    box-sizing: border-box;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 30px;
    color: white;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Sections */
.section {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 30px;
    margin-bottom: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.section.hidden {
    display: none;
}

.section h2 {
    margin-bottom: 20px;
    color: #4a5568;
    font-size: 1.8rem;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #4a5568;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

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

.btn-secondary {
    background: #f7fafc;
    color: #4a5568;
    border: 2px solid #e2e8f0;
}

.btn-secondary:hover {
    background: #edf2f7;
    border-color: #cbd5e0;
}

.btn-small {
    padding: 8px 16px;
    font-size: 14px;
}

/* Back Button */
.back-btn {
    display: inline-block;
    margin-bottom: 20px;
    color: #667eea;
    cursor: pointer;
    font-weight: 600;
    transition: color 0.3s ease;
}

.back-btn:hover {
    color: #5a67d8;
}

/* List Containers */
.list-container {
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    padding: 10px;
    overflow-x: hidden;
    width: 100%;
    box-sizing: border-box;
}

.list-item {
    padding: 15px;
    border-bottom: 1px solid #f1f5f9;
    cursor: pointer;
    transition: background-color 0.2s ease;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.list-item:hover {
    background-color: #f8fafc;
}

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

.list-item strong {
    display: block;
    color: #2d3748;
    margin-bottom: 4px;
}

.list-item small {
    color: #718096;
}

/* Checkbox List Items */
.list-item-checkbox {
    display: flex;
    align-items: center;
    padding: 15px;
    border-bottom: 1px solid #f1f5f9;
    transition: background-color 0.2s ease;
    width: 100%;
    box-sizing: border-box;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.list-item-checkbox:hover {
    background-color: #f8fafc;
}

.list-item-checkbox.selected {
    background-color: #ebf8ff;
    border-color: #bee3f8;
}

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

.list-item-checkbox input[type="checkbox"] {
    margin-right: 15px;
    transform: scale(1.2);
    flex-shrink: 0;
}

.item-content {
    flex: 1;
    min-width: 0;
}

.item-content strong {
    display: block;
    color: #2d3748;
    margin-bottom: 4px;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.item-content small {
    color: #718096;
}

.item-actions {
    margin-left: 15px;
    flex-shrink: 0;
}

/* Batch Controls */
.batch-controls {
    margin-bottom: 20px;
    padding: 15px;
    background-color: #f7fafc;
    border-radius: 10px;
    border: 1px solid #e2e8f0;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
}

.selected-count {
    margin-left: auto;
    font-weight: 600;
    color: #4a5568;
}

/* Progress Bar */
.progress-bar {
    width: 100%;
    height: 20px;
    background: #e2e8f0;
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 15px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #48bb78, #38a169);
    width: 0%;
    transition: width 0.5s ease;
}

#progress-text {
    text-align: center;
    font-weight: 600;
    color: #4a5568;
    margin-bottom: 20px;
}

/* Results Log */
.results-log {
    max-height: 300px;
    overflow-y: auto;
    background: #f7fafc;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    padding: 15px;
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 14px;
}

.log-entry {
    margin-bottom: 8px;
    padding: 4px 0;
}

.log-info {
    color: #4a5568;
}

.log-success {
    color: #38a169;
    font-weight: 600;
}

.log-error {
    color: #e53e3e;
    font-weight: 600;
}

/* Loading Animation */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    color: white;
}

.loading.hidden {
    display: none !important;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid #fff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading p {
    font-size: 18px;
    font-weight: 600;
}

/* Responsive Design */
@media (max-width: 600px) {
    .container {
        padding: 15px;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .section {
        padding: 20px;
    }
    
    .list-item-checkbox {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .item-actions {
        margin-left: 0;
        width: 100%;
    }
    
    .item-actions .btn {
        width: 100%;
    }
    
    .batch-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .batch-controls .btn {
        width: 100%;
        margin-bottom: 10px;
    }
    
    .batch-controls .btn:last-child {
        margin-bottom: 0;
    }
    
    .selected-count {
        margin-left: 0;
        text-align: center;
    }
}