:root {
    --primary-color: #c92a2a;
    --primary-hover: #a61e1e;
    --primary-light: #fff5f5;
    --bg-color: #fafafa;
    --card-bg: #ffffff;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-muted: #999999;
    --border-color: #eee;
    --shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    --radius: 16px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
}

body {
   font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
    background: var(--bg-color);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    line-height: 1.7;
    color: var(--text-primary);
}

.container {
    width: 100%;
    max-width: 666px;
}

.header {
    text-align: center;
    margin-bottom: 32px;
}

.title {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    letter-spacing: 2px;
}

.subtitle {
    font-size: 0.9rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.search-box {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: var(--shadow);
    margin-bottom: 24px;
    border: 1px solid var(--border-color);
}

.search-form {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.search-form input {
    flex: 1;
    padding: 14px 18px;
    font-size: 1rem;
    border: 1px solid #ddd;
    border-radius: 10px;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    background: #fafafa;
    color: var(--text-primary);
}

.search-form input:focus {
    border-color: var(--primary-color);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(201, 42, 42, 0.08);
}

.search-form input::placeholder {
    color: var(--text-muted);
}

.search-btn {
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 500;
    color: #fff;
    background: var(--primary-color);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    letter-spacing: 1px;
}

.search-btn:hover {
    background: var(--primary-hover);
}

.search-btn:active {
    transform: scale(0.98);
}

.local-btn {
    width: 100%;
    padding: 13px;
    font-size: 0.95rem;
    color: var(--primary-color);
    background: transparent;
    border: 1px solid var(--primary-color);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
    letter-spacing: 1px;
}

.local-btn:hover {
    background: var(--primary-light);
}

.results {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.result-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 22px 28px;
    background: linear-gradient(135deg, #fff 0%, #fafafa 100%);
    border-bottom: 1px solid var(--border-color);
}

.result-ip {
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--text-primary);
    font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
    letter-spacing: 0.5px;
    white-space: nowrap;
    overflow: hidden;
 
}

.result-ip.IPv6 {
    font-size: 0.9rem;
   
}

.result-type {
    padding: 6px 14px;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: 20px;
    letter-spacing: 1px;
}

.result-type.IPv4 {
    background: #fff0f0;
    color: var(--primary-color);
    border: 1px solid #ffdada;
}

.result-type.IPv6 {
    background: #f5f0ff;
    color: #7c3aed;
    border: 1px solid #e9d5ff;
}

.result-type.browser-info {
    background: #f0f5ff;
    color: #2563eb;
    border: 1px solid #bfdbfe;
}

.local-tag {
    padding: 4px 10px;
    font-size: 0.75rem;
    font-weight: 600;
    color: #666;
    background: #f0f0f0;
    border-radius: 4px;
    margin-left: 10px;
    vertical-align: middle;
}

.result-body {
    padding: 8px 28px 20px;
}

.result-row {
    display: flex;
    padding: 14px 0;
    border-bottom: 1px solid #f5f5f5;
}

.result-row:last-child {
    border-bottom: none;
}

.result-label {
    flex: 0 0 100px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.result-value {
    flex: 1;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.error-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 20px;
}

.error-icon {
    width: 44px;
    height: 44px;
    background: #fff0f0;
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    font-weight: 700;
    flex-shrink: 0;
}

.error-message {
    color: var(--primary-color);
    font-size: 0.95rem;
}

.footer {
    text-align: center;
    margin-top: 36px;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer p {
    margin-bottom: 6px;
}

.footer-note {
    font-size: 0.8rem;
    opacity: 0.7;
}

@media (max-width: 480px) {
    body {
        padding: 24px 16px;
    }
    
    .title {
        font-size: 1.7rem;
    }
    
    .search-box {
        padding: 20px;
    }
    
    .search-form {
        flex-direction: column;
    }
    
    .search-btn {
        width: 100%;
    }
    
    .result-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 14px;
        padding: 18px 20px;
    }
    
    .result-row {
        flex-direction: column;
        gap: 4px;
    }
    
    .result-label {
        flex: none;
    }
    
    .result-body {
        padding: 8px 20px 16px;
    }
}