/* ASCII工具样式 */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f7f9fc;
    padding-bottom: 60px;
}

header {
    background-color: #2c3e50;
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-right: 20px;
}

nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

nav ul li a:hover {
    color: #3498db;
}

main {
    padding: 2rem 0;
}

h1, h2, h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.tool-description {
    background-color: #e7f5ff;
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    border-left: 5px solid #3498db;
}

.converter-section {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-bottom: 2rem;
}

.converter-box {
    flex: 0 0 48%;
    background-color: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    margin-bottom: 20px;
}

@media (max-width: 768px) {
    .converter-box {
        flex: 0 0 100%;
    }
}

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

label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    min-height: 100px;
    font-family: 'Courier New', monospace;
    resize: vertical;
}

.button-group {
    display: flex;
    justify-content: space-between;
}

button {
    padding: 8px 16px;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    font-weight: 500;
}

button:hover {
    background-color: #2980b9;
}

button.copy-btn {
    background-color: #2ecc71;
}

button.copy-btn:hover {
    background-color: #27ae60;
}

.reference-section {
    background-color: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.tabs {
    display: flex;
    border-bottom: 1px solid #ddd;
    margin-bottom: 20px;
}

.tab {
    padding: 10px 15px;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
}

.tab:hover {
    background-color: #f5f5f5;
}

.tab.active {
    border-bottom: 2px solid #3498db;
    font-weight: 500;
}

.search-box {
    margin-bottom: 20px;
}

.search-box input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.ascii-table-container {
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid #eee;
    border-radius: 4px;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th {
    background-color: #f2f2f2;
    padding: 10px;
    text-align: left;
    position: sticky;
    top: 0;
    box-shadow: 0 1px 0 #ddd;
}

td {
    padding: 8px 10px;
    border-bottom: 1px solid #eee;
}

.char-cell {
    font-family: 'Courier New', monospace;
    text-align: center;
}

tr:hover {
    background-color: #f5f9fc;
}

footer {
    background-color: #2c3e50;
    color: white;
    padding: 1rem 0;
    text-align: center;
    position: fixed;
    bottom: 0;
    width: 100%;
}

.tooltip {
    position: fixed;
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 14px;
    pointer-events: none;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 1000;
}

.tooltip.active {
    opacity: 1;
    transform: translateY(0);
}