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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
    background: #f5f6fa;
    min-height: 100vh;
}

.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header h3 {
    margin: 0;
    font-size: 24px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

.stats {
    background: #e3f2fd;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    text-align: center;
    font-size: 16px;
    color: #1976d2;
    font-weight: 600;
}

.controls {
    background: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.button-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}

.btn {
    padding: 12px 16px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-primary { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; }
.btn-success { background: #28a745; color: white; }
.btn-info { background: #17a2b8; color: white; }
.btn-secondary { background: #6c757d; color: white; }
.btn-danger { background: #dc3545; color: white; }

.search-input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.2s;
}

.search-input:focus {
    outline: none;
    border-color: #667eea;
}

.add-form {
    background: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    margin-bottom: 20px;
    display: none;
}

.add-form.show { display: block; }

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: #333;
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
}

.url-list {
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    overflow: hidden;
}

.url-item {
    padding: 16px;
    border-bottom: 1px solid #f0f0f0;
    transition: all 0.2s;
    cursor: pointer;
    position: relative;
}

.url-item:hover {
    background: #f8f9fa;
    transform: translateX(4px);
}

.url-item:last-child { border-bottom: none; }
.url-item.dragging { opacity: 0.5; }

.url-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
    padding-right: 80px;
}

.favicon {
    width: 20px;
    height: 20px;
    border-radius: 4px;
}

.url-title {
    font-weight: 600;
    color: #2c3e50;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 16px;
}

.url-short {
    color: #667eea;
    font-size: 14px;
    font-family: 'Courier New', monospace;
    margin: 6px 0;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}

.url-original {
    color: #7f8c8d;
    font-size: 13px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin: 6px 0;
}

.url-actions {
    position: absolute;
    top: 16px;
    right: 16px;
    display: flex;
    gap: 8px;
}

.btn-action {
    background: white;
    border: 1px solid #e0e0e0;
    padding: 8px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    transition: all 0.2s;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-action:hover {
    background: #f8f9fa;
    border-color: #667eea;
}

.btn-action.delete:hover {
    background: #fee;
    border-color: #e74c3c;
    color: #e74c3c;
}

.btn-action.confirm-delete {
    background: #e74c3c;
    color: white;
    animation: pulse 0.5s ease-in-out;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.domain-tag {
    background: #e3f2fd;
    color: #1976d2;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #7f8c8d;
}

.empty-state-icon {
    font-size: 64px;
    margin-bottom: 16px;
    opacity: 0.3;
}

.loading {
    text-align: center;
    padding: 40px;
    color: #666;
}

.loading-spinner {
    display: inline-block;
    width: 32px;
    height: 32px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 16px;
}

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

.toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: #28a745;
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    animation: slideUp 0.3s ease-out;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

@keyframes slideUp {
    from { opacity: 0; transform: translate(-50%, 20px); }
    to { opacity: 1; transform: translate(-50%, 0); }
}

.error {
    background: #fee;
    color: #e74c3c;
    padding: 12px;
    border-radius: 8px;
    margin-top: 10px;
    border: 1px solid #fdd;
}

.hidden { display: none !important; }
#fileInput { display: none; }

@media (max-width: 768px) {
    .container { padding: 10px; }
    .button-group { grid-template-columns: 1fr; }
    .url-actions { position: static; margin-top: 12px; justify-content: flex-end; }
    .url-header { padding-right: 0; }
}