:root {
    --primary-color: #18a058;
    --primary-hover: #0e8043;
    --secondary-color: #e0e0e0;
    --secondary-hover: #c0c0c0;
    --background-color: #f5f5f5;
    --card-bg: #ffffff;
    --text-color: #333333;
    --border-color: #dddddd;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --radius: 6px;
    --spacing: 16px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

body {
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

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

main {
    background-color: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    margin-bottom: 30px;
}

.tool-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

h1 {
    color: var(--text-color);
    margin-bottom: 10px;
    font-size: 2rem;
    font-weight: 600;
}

p {
    color: #666;
    margin-bottom: 0;
}

.tool-container {
    padding: 20px;
}

.input-section {
    margin-bottom: 30px;
    padding: 20px;
    background-color: #f9f9f9;
    border-radius: var(--radius);
}

.input-row {
    display: flex;
    align-items: center;
}

.input-row label {
    flex: 0 0 120px;
    font-weight: 500;
    color: #666;
}

.input-field {
    flex: 1;
    position: relative;
}

input[type="text"] {
    width: 100%;
    padding: 10px 40px 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s;
}

input[type="text"]:focus {
    border-color: var(--primary-color);
}

.clear-btn {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #999;
    cursor: pointer;
    padding: 5px;
    font-size: 1rem;
}

.clear-btn:hover {
    color: var(--primary-color);
}

.results-section {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.result-row {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    background-color: #f9f9f9;
    border-radius: var(--radius);
}

.result-label {
    flex: 0 0 120px;
    font-weight: 500;
    color: var(--primary-color);
}

.result-value-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.result-value {
    font-family: monospace;
    font-size: 1rem;
    word-break: break-all;
}

.copy-btn {
    background: none;
    border: none;
    color: #999;
    cursor: pointer;
    padding: 5px 10px;
    font-size: 1.1rem;
    transition: color 0.3s;
    margin-left: 10px;
    flex-shrink: 0;
}

.copy-btn:hover {
    color: var(--primary-color);
}

.toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 10px 20px;
    border-radius: 20px;
    font-size: 0.9rem;
    opacity: 0;
    transition: all 0.3s;
    z-index: 1000;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

footer {
    text-align: center;
    padding: 20px 0;
    color: #666;
}

/* Responsive Styles */
@media (max-width: 600px) {
    .input-row {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .input-row label {
        margin-bottom: 8px;
    }
    
    .input-field {
        width: 100%;
    }
    
    .result-row {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .result-label {
        margin-bottom: 8px;
    }
    
    .result-value-container {
        width: 100%;
    }
}