:root {
    --primary-color: #b1ca75;
    --primary-light: #a8e6cf;
    --primary-dark: #8cb703;
    --background-color: #f7f7f7;
    --card-color: #ffffff;
    --text-color: #333333;
    --text-light: #666666;
    --danger-color: #ff6b6b;
    --danger-dark: #ee5253;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --radius: 8px;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

h1 {
    color: var(--primary-dark);
    font-weight: 600;
}

.icon-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.icon-btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
}

.search-container {
    position: relative;
    margin-right: 0.5rem;
}

.search-input {
    width: 220px;
    padding: 0.6rem 0.6rem 0.6rem 2.2rem;
    border: 1px solid #e0e0e0;
    border-radius: var(--radius);
    font-size: 0.9rem;
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(78, 204, 163, 0.2);
    width: 260px;
}

.search-icon {
    position: absolute;
    left: 0.7rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    font-size: 1rem;
}

.dropdown {
    position: relative;
}

.dropdown-content {
    display: none;
    position: absolute;
    right: 0;
    top: 52px;
    min-width: 160px;
    background-color: var(--card-color);
    box-shadow: var(--shadow);
    border-radius: var(--radius);
    z-index: 10;
    overflow: hidden;
}

.dropdown.active .dropdown-content {
    display: block;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1rem;
    width: 100%;
    border: none;
    background: none;
    text-align: left;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-color);
}

.dropdown-item:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

.dropdown-item.danger {
    color: var(--danger-color);
}

.dropdown-item.danger:hover {
    background-color: rgba(255, 107, 107, 0.1);
}

#importInput {
    display: none;
}

.bookmarks-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.bookmark-card {
    background-color: var(--card-color);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    cursor: pointer;
    overflow: hidden;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.bookmark-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
}

.bookmark-card:hover .card-actions {
    opacity: 1;
}

.bookmark-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.favicon {
    width: 24px;
    height: 24px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.bookmark-title {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-color);
    flex-grow: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.bookmark-description-text {
    color: var(--text-light);
    font-size: 0.8rem;
    margin-left: 0.5rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.bookmark-url, .bookmark-description {
    display: none;
}

.card-actions {
    position: absolute;
    top: 1rem;
    right: 1rem;
    opacity: 0;
    transition: var(--transition);
    display: flex;
    gap: 0.5rem;
}

.edit-btn, .visit-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-light);
    font-size: 1.2rem;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
}

.edit-btn:hover, .visit-btn:hover {
    
    color: var(--primary-dark);
}

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

.import-export-container {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.import-btn, .export-btn, .clear-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
    font-size: 0.9rem;
}

.import-btn:hover, .export-btn:hover {
    background-color: var(--primary-dark);
}

.clear-btn {
    background-color: #ff6b6b;
}

.clear-btn:hover {
    background-color: #ee5253;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: var(--card-color);
    border-radius: var(--radius);
    padding: 2rem;
    width: 90%;
    max-width: 500px;
    position: relative;
    animation: modalFadeIn 0.3s ease;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.close-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--text-light);
    transition: var(--transition);
}

.close-btn:hover {
    color: var(--text-color);
}

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

input, textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #e0e0e0;
    border-radius: var(--radius);
    font-size: 1rem;
    transition: var(--transition);
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(78, 204, 163, 0.2);
}

textarea {
    min-height: 100px;
    resize: vertical;
}

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

.submit-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.7rem 1.5rem;
    border-radius: var(--radius);
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
}

.submit-btn:hover {
    background-color: var(--primary-dark);
}

.delete-btn {
    background-color: #ff6b6b;
    color: white;
    border: none;
    padding: 0.7rem 1.5rem;
    border-radius: var(--radius);
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
}

.delete-btn:hover {
    background-color: #ee5253;
}

.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-light);
}

.empty-icon {
    font-size: 3rem;
    color: var(--primary-light);
    margin-bottom: 1rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .header-actions {
        width: 100%;
        justify-content: flex-end;
    }
    
    .search-input {
        width: 150px;
    }
    
    .search-input:focus {
        width: 180px;
    }
    
    .bookmarks-container {
        grid-template-columns: 1fr;
    }
}