/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f7fa;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* 头部样式 */
header {
    background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
    color: white;
    padding: 20px 30px;
    border-radius: 12px;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

header h1 {
    font-size: 28px;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    align-items: center;
}

.search-box {
    display: flex;
    flex-grow: 1;
    max-width: 400px;
}

.search-box input {
    flex-grow: 1;
    padding: 10px 15px;
    border: none;
    border-radius: 8px 0 0 8px;
    font-size: 16px;
}

.search-box button {
    background-color: #4a6ee0;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 0 8px 8px 0;
    cursor: pointer;
    transition: background-color 0.3s;
}

.search-box button:hover {
    background-color: #3a5ecf;
}

.import-export {
    display: flex;
    gap: 10px;
}

/* 按钮样式 */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s;
}

.btn-primary {
    background-color: #4a6ee0;
    color: white;
}

.btn-primary:hover {
    background-color: #3a5ecf;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(58, 94, 207, 0.3);
}

.btn-secondary {
    background-color: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background-color: #5a6268;
}

.btn-danger {
    background-color: #e74c3c;
    color: white;
}

.btn-danger:hover {
    background-color: #c0392b;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 14px;
}

/* 主内容布局 */
.main-content {
    display: flex;
    gap: 30px;
}

/* 侧边栏 */
.sidebar {
    flex: 0 0 250px;
    background-color: white;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    height: fit-content;
}

.filters h3,
.stats h3 {
    margin-bottom: 15px;
    color: #4a6ee0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.filter-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 25px;
}

.filter-btn {
    padding: 12px 15px;
    background-color: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    text-align: left;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 10px;
}

.filter-btn:hover {
    background-color: #e9ecef;
}

.filter-btn.active {
    background-color: #4a6ee0;
    color: white;
    border-color: #4a6ee0;
}

.stats p {
    margin-bottom: 10px;
    padding: 8px 0;
    border-bottom: 1px solid #eee;
}

.stats span {
    font-weight: bold;
    color: #4a6ee0;
}

/* 联系人列表 */
.contact-list-container {
    flex: 1;
    background-color: white;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.contact-list-container h2 {
    margin-bottom: 20px;
    color: #333;
    display: flex;
    align-items: center;
    gap: 10px;
}

.contact-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.contact-card {
    background-color: #f8f9fa;
    border-radius: 10px;
    padding: 20px;
    border-left: 4px solid #4a6ee0;
    transition: all 0.3s;
    position: relative;
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.contact-card.favorite {
    border-left-color: #ffc107;
    background-color: #fff9e6;
}

.contact-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
}

.contact-name {
    font-size: 20px;
    font-weight: 600;
    color: #333;
}

.contact-company {
    color: #6c757d;
    font-size: 14px;
    margin-top: 5px;
}

.favorite-icon {
    color: #ffc107;
    cursor: pointer;
    font-size: 20px;
}

.contact-methods {
    margin-top: 15px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.method-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
}

.method-icon {
    color: #4a6ee0;
    width: 20px;
}

.contact-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.action-btn {
    padding: 6px 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    background-color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 14px;
    transition: all 0.3s;
}

.action-btn:hover {
    background-color: #f8f9fa;
}

.action-btn.edit:hover {
    border-color: #4a6ee0;
    color: #4a6ee0;
}

.action-btn.delete:hover {
    border-color: #e74c3c;
    color: #e74c3c;
}

.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: #6c757d;
}

.empty-state i {
    margin-bottom: 20px;
    color: #dee2e6;
}

/* 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: white;
    border-radius: 12px;
    width: 90%;
    max-width: 700px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.modal-content.small {
    max-width: 500px;
}

.modal-header {
    padding: 20px 30px;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    color: #333;
}

.close-btn {
    background: none;
    border: none;
    font-size: 28px;
    cursor: pointer;
    color: #6c757d;
    transition: color 0.3s;
}

.close-btn:hover {
    color: #333;
}

.modal-body {
    padding: 30px;
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

.form-row {
    display: flex;
    gap: 20px;
}

.form-row .form-group {
    flex: 1;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #333;
}

input,
textarea,
select {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s;
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: #4a6ee0;
}

textarea {
    resize: vertical;
}

.form-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.method-row {
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
    align-items: center;
}

.method-row select,
.method-row input {
    flex: 1;
}

.remove-method {
    background-color: #e74c3c;
    color: white;
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.checkbox-label input {
    width: auto;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 15px;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .main-content {
        flex-direction: column;
    }

    .sidebar {
        flex: none;
        width: 100%;
    }

    .contact-list {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .header-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .search-box {
        max-width: 100%;
    }

    .contact-list {
        grid-template-columns: 1fr;
    }

    .form-row {
        flex-direction: column;
        gap: 0;
    }

    .modal-content {
        width: 95%;
    }
}