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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
    line-height: 1.6;
}

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

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;
}

.tool-section {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.options {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 30px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 10px;
}

.toggle-switch {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.toggle-switch input {
    display: none;
}

.slider {
    width: 50px;
    height: 24px;
    background: #ccc;
    border-radius: 12px;
    position: relative;
    transition: 0.3s;
}

.slider::before {
    content: "";
    position: absolute;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
    top: 2px;
    left: 2px;
    transition: 0.3s;
}

.toggle-switch input:checked + .slider {
    background: #667eea;
}

.toggle-switch input:checked + .slider::before {
    transform: translateX(26px);
}

.label {
    font-weight: 500;
    color: #333;
}

.info-tooltip {
    position: relative;
    display: inline-block;
}

.info-icon {
    display: inline-block;
    width: 20px;
    height: 20px;
    background: #667eea;
    color: white;
    border-radius: 50%;
    text-align: center;
    line-height: 20px;
    font-size: 12px;
    cursor: help;
}

.tooltip-content {
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    background: #333;
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 12px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: 0.3s;
    z-index: 1000;
}

.tooltip-content::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: #333;
}

.info-tooltip:hover .tooltip-content {
    opacity: 1;
    visibility: visible;
}

.converter-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.input-group {
    display: flex;
    flex-direction: column;
}

.input-group label {
    font-weight: 600;
    margin-bottom: 8px;
    color: #555;
}

.input-group textarea {
    width: 100%;
    height: 150px;
    padding: 12px;
    border: 2px solid #e1e5e9;
    border-radius: 8px;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 14px;
    resize: vertical;
    transition: 0.3s;
}

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

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

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    transition: 0.3s;
    font-size: 14px;
}

.btn.primary {
    background: #667eea;
    color: white;
}

.btn.primary:hover {
    background: #5a67d8;
    transform: translateY(-2px);
}

.btn.secondary {
    background: #e2e8f0;
    color: #4a5568;
}

.btn.secondary:hover {
    background: #cbd5e0;
}

.actions {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.copy-btn {
    background: #48bb78;
    color: white;
}

.copy-btn:hover {
    background: #38a169;
}

.swap-btn {
    background: #ed8936;
    color: white;
}

.swap-btn:hover {
    background: #dd6b20;
}

.info-panel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    padding: 15px;
    background: #f7fafc;
    border-radius: 8px;
    border-left: 4px solid #667eea;
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.info-label {
    font-weight: 500;
    color: #4a5568;
}

.examples-section {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.examples-section h3 {
    text-align: center;
    margin-bottom: 20px;
    color: #333;
}

.example-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.example-item {
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
    border-left: 4px solid #667eea;
}

.example-item h4 {
    color: #667eea;
    margin-bottom: 10px;
}

.example-item p {
    margin-bottom: 8px;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 13px;
}

footer {
    text-align: center;
    color: white;
    opacity: 0.8;
    margin-top: 20px;
}

.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #48bb78;
    color: white;
    padding: 12px 20px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transform: translateX(100%);
    transition: 0.3s;
    z-index: 1000;
}

.notification.show {
    transform: translateX(0);
}

.notification.hidden {
    transform: translateX(100%);
}

@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .converter-section {
        grid-template-columns: 1fr;
    }
    
    .actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 200px;
    }
    
    .info-panel {
        grid-template-columns: 1fr;
    }
    
    .example-grid {
        grid-template-columns: 1fr;
    }
}

/* Loading animation */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.2), transparent);
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}