/* style.css */
:root {
    --card-min-width: 300px;
    --tag-color: #f8d7da;
    --tag-text: #721c24;
}

body {
    font-family: "Microsoft YaHei", sans-serif;
    margin: 0;
    padding: 20px;
    background: #f8f9fa;
}

header {
    margin-bottom: 20px;
    border-bottom: 2px solid #dee2e6;
}

.notice {
    color: #6c757d;
    font-size: 0.9em;
    padding: 15px 0;
}

.category-nav ul {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    list-style: none;
    padding: 0;
    margin: 20px 0;
}

.category-nav li {
    padding: 8px 16px;
    cursor: pointer;
    border-radius: 20px;
    background: #e9ecef;
    transition: all 0.3s;
    font-size: 0.95em;
}

.category-nav li.active {
    background: var(--tag-color);
    color: var(--tag-text);
}

.card-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(var(--card-min-width), 1fr));
    gap: 20px;
    padding: 10px 0;
}

.card {
    background: white;
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    position: relative;
    transition: transform 0.2s;
}

.card:hover {
    transform: translateY(-3px);
}

.card h2 {
    margin: 0 0 12px;
    font-size: 1.2em;
    color: #2d3436;
}

.card p {
    margin: 0 0 15px;
    color: #636e72;
    font-size: 0.9em;
    line-height: 1.5;
}

.tag-box {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 15px;
}

.tag {
    background: var(--tag-color);
    color: var(--tag-text);
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.8em;
}

@media (max-width: 768px) {
    body { padding: 15px; }
    .card { padding: 15px; }
    .category-nav li { padding: 6px 12px; }
}

@media (max-width: 480px) {
    header h1 { font-size: 1.4rem; }
    .notice p { font-size: 0.8rem; }
    .card-container { grid-template-columns: 1fr; }
}
/* 新增验证窗口样式 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 999;
}

.modal-content {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0,0,0,0.2);
    width: 350px;
    text-align: center;
}

#passwordInput {
    width: 100%;
    padding: 12px;
    margin: 10px 0 20px -10px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 16px;
}

#confirmPassword {
    background: #007bff;
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.3s;
}

#confirmPassword:hover {
    background: #0056b3;
}

.error-msg {
    color: #dc3545;
    margin-top: 15px;
    display: none;
}

/* 新增版权样式 */
.copyright {
    margin-top: 40px;
    text-align: center;
    color: #6c757d;
    padding: 20px 0;
    border-top: 1px solid #dee2e6;
}