:root {
    --primary: #1a237e;
    --primary-light: #303f9f;
    --secondary: #00bcd4;
    --secondary-dark: #0097a7;
    --accent: #ff4081;
    --light: #ffffff;
    --dark: #212121;
    --gray: #f5f5f5;
    --gray-dark: #e0e0e0;
    --text: #333333;
    --text-light: #757575;
    --success: #4caf50;
    --error: #f44336;
}

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

body {
    background-color: #f9f9f9;
    color: var(--text);
    line-height: 1.6;
	font-family: "Microsoft YaHei", "微软雅黑", sans-serif;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ��������ʽ */
header {
    background: var(--light);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 15px;
    text-decoration: none;
}

.logo-img {
    width: 50px;
    height: 50px;
    border-radius: 10%;
    object-fit: cover;
}

.logo-text {
    font-size: 22px;
    font-weight: bold;
    color: var(--primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

    .nav-links a {
        text-decoration: none;
        color: var(--dark);
        font-size: 17px;
        font-weight: 500;
        padding: 8px 0;
        position: relative;
        transition: all 0.3s ease;
    }

        .nav-links a:hover {
            color: var(--primary);
        }

        .nav-links a.active {
            color: var(--primary);
        }

.auth-buttons {
    display: flex;
    gap: 10px;
}

.auth-btn {
    padding: 8px 20px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.login-btn {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}

    .login-btn:hover {
        background: var(--primary);
        color: white;
    }

.register-btn {
    background: var(--primary);
    color: white;
}

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

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

#usernameDisplay {
    font-weight: 500;
    color: var(--primary);
}

.logout-btn {
    background: var(--error);
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.3s;
}

    .logout-btn:hover {
        background: #d32f2f;
    }

/* ��Ŀ���� */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    padding: 40px 0;
}

.project-card {
    background: var(--light);
    border-radius: 8px;
    padding: 25px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

    .project-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    }

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

    .project-header h2 {
        font-size: 1.4rem;
        color: var(--primary);
        cursor: pointer;
    }

.project-date {
    color: var(--text-light);
    font-size: 0.9rem;
}

.project-summary p {
    color: var(--text);
    margin-bottom: 20px;
    line-height: 1.6;
}

.read-more-btn {
    display: inline-block;
    padding: 8px 20px;
    background: var(--primary);
    color: white;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 500;
    transition: background 0.3s;
    border: none;
    cursor: pointer;
}

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

/* ������������ */
.article-container {
    background: var(--light);
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    padding: 40px;
    margin: 40px 0;
    display: none;
}

.article-header {
    margin-bottom: 30px;
    border-bottom: 1px solid var(--gray-dark);
    padding-bottom: 20px;
}

.article-title {
    font-size: 2rem;
    color: var(--dark);
    margin-bottom: 15px;
}

.article-meta {
    display: flex;
    color: var(--text-light);
    font-size: 14px;
    gap: 20px;
}

.article-content {
    line-height: 1.8;
    font-size: 16px;
}

    .article-content p {
        margin-bottom: 20px;
    }

/* �������� */
.comments-section {
    background: var(--light);
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    padding: 30px;
    margin: 40px 0;
}

    .comments-section h3 {
        font-size: 1.5rem;
        margin-bottom: 20px;
        color: var(--dark);
    }

.comment-form {
    margin-bottom: 30px;
}

.comment-input {
    width: 100%;
    min-height: 100px;
    padding: 15px;
    border: 1px solid var(--gray-dark);
    border-radius: 4px;
    font-size: 16px;
    resize: vertical;
    margin-bottom: 15px;
}

.submit-btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: 10px 25px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background 0.3s;
}

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

.comments-list {
    margin-top: 30px;
}

.comment-item {
    padding: 20px 0;
    border-bottom: 1px solid var(--gray-dark);
}

.comment-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
}

.comment-author {
    font-weight: 500;
    color: var(--dark);
}

.comment-time {
    color: var(--text-light);
    font-size: 14px;
}

.comment-text {
    margin-bottom: 15px;
    line-height: 1.6;
}

/* ģ̬�� */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    border-radius: 8px;
    width: 400px;
    max-width: 90%;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

.modal-header {
    padding: 20px;
    background: var(--primary);
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: 1.4rem;
}

.close-btn {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: white;
}

.modal-body {
    padding: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-input {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}

.submit-btn-block {
    background: var(--primary);
    color: white;
    border: none;
    padding: 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    width: 100%;
    transition: background 0.3s;
}

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

.form-footer {
    text-align: center;
    margin-top: 15px;
    font-size: 14px;
}

    .form-footer a {
        color: var(--primary);
        text-decoration: none;
    }

.status-message {
    padding: 10px;
    margin: 15px 0;
    border-radius: 4px;
    text-align: center;
    display: none;
}

.success {
    background: #dff0d8;
    color: #3c763d;
    border: 1px solid #d6e9c6;
}

.error {
    background: #f2dede;
    color: #a94442;
    border: 1px solid #ebccd1;
}

/* ��Ӧʽ���� */
@media (max-width: 768px) {
    .navbar {
        flex-wrap: wrap;
    }

    .nav-links {
        order: 3;
        width: 100%;
        margin-top: 15px;
        justify-content: center;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .article-container {
        padding: 20px;
    }
}
/*������ʾ*/
.error {
    color: #d32f2f;
    background-color: #ffebee;
    padding: 15px;
    border-radius: 4px;
    border: 1px solid #ffcdd2;
    font-weight: 500;
}
/* 新增：管理员徽章样式 */
.admin-badge {
    color: gold;
    font-size: 1.2em;
    margin-left: 5px;
    vertical-align: middle;
    cursor: help;
}

/* 管理员面板 */
#adminPanel {
    background: var(--primary);
    padding: 10px;
    color: white;
    text-align: center;
    position: sticky;
    top: 70px;
    z-index: 999;
}

.admin-toggle-btn {
    background: white;
    color: var(--primary);
    border: none;
    padding: 5px 15px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
}

#adminControls {
    background: white;
    padding: 15px;
    margin-top: 10px;
    border-radius: 8px;
    color: var(--dark);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

/* �û�ͷ�� */
.user-avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    object-fit: cover;
    margin-right: 10px;
}

/* ����ͷ�� */
.comment-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    margin-right: 10px;
    object-fit: cover;
}

.comment-header {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}

.comment-author {
    font-weight: bold;
    margin-right: auto;
}

/* �ظ���ɾ����ť */
.reply-btn, .delete-btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: 5px 10px;
    border-radius: 4px;
    margin-left: 10px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background 0.3s;
}

.reply-btn:hover, .delete-btn:hover {
    background: var(--primary-light);
}

.delete-btn {
    background: var(--error);
}

.delete-btn:hover {
    background: #d32f2f;
}

/* �ظ����� */
.reply-form {
    margin-top: 10px;
    padding: 10px;
    background: var(--gray);
    border-radius: 4px;
}

.reply-form textarea {
    width: 100%;
    min-height: 60px;
    margin-bottom: 10px;
}

.submit-reply {
    background: var(--primary);
    color: white;
    border: none;
    padding: 8px 15px;
    border-radius: 4px;
    cursor: pointer;
}

/* Ƕ�׻ظ� */
.replies-container {
    margin-left: 50px;
    border-left: 2px solid var(--gray-dark);
    padding-left: 15px;
    margin-top: 15px;
}

/* ����Ա���� */
#adminPanel {
    background: var(--primary);
    padding: 10px;
    color: white;
    text-align: center;
    position: sticky;
    top: 70px;
    z-index: 999;
}

.admin-toggle-btn {
    background: white;
    color: var(--primary);
    border: none;
    padding: 5px 15px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
}

#adminControls {
    background: white;
    padding: 15px;
    margin-top: 10px;
    border-radius: 8px;
    color: var(--dark);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

/* ͷ���ϴ����� */
.avatar-form {
    display: flex;
    flex-direction: column;
    margin-top: 20px;
}

.avatar-preview {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    margin: 10px auto;
    border: 2px solid var(--primary);
}

.avatar-form input {
    margin-bottom: 10px;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.avatar-form button {
    background: var(--primary);
    color: white;
    border: none;
    padding: 8px;
    border-radius: 4px;
    cursor: pointer;
}
/* 添加以下样式到style.css */
.profile-container {
    background: white;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    padding: 40px;
    margin: 40px 0;
    max-width: 800px;
    margin: 40px auto;
}

.profile-header {
    text-align: center;
    margin-bottom: 30px;
}

.avatar-container {
    position: relative;
    display: inline-block;
    margin-bottom: 20px;
}

.profile-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--primary);
}

.change-avatar-btn {
    position: absolute;
    bottom: 5px;
    right: 5px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    width: 35px;
    height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.user-info-card {
    background: var(--gray);
    border-radius: 8px;
    padding: 25px;
    margin-bottom: 30px;
}

.info-item {
    display: flex;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--gray-dark);
}

.info-label {
    width: 120px;
    font-weight: 500;
    color: var(--dark);
}

.info-value {
    flex: 1;
    color: var(--text);
}

.danger-zone {
    border: 1px solid var(--error);
    border-radius: 8px;
    padding: 25px;
    margin-top: 40px;
}

.danger-zone h3 {
    color: var(--error);
    margin-bottom: 20px;
}

.admin-panel {
    border: 1px solid var(--primary);
    border-radius: 8px;
    padding: 25px;
    margin-top: 30px;
}
/* 管理员列表样式 */
.admin-section {
    margin-top: 60px;
    padding-top: 30px;
    border-top: 1px solid var(--gray-dark);
}

.admin-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 25px;
}

.admin-card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    padding: 25px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.admin-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(26, 35, 126, 0.2);
}

.admin-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.admin-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    margin-right: 15px;
    border: 2px solid var(--primary);
}

.admin-name {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--dark);
}

.admin-email {
    color: var(--text-light);
    font-size: 0.9rem;
}

.admin-type {
    display: inline-block;
    background: rgba(255, 215, 0, 0.2);
    color: #b8860b;
    padding: 3px 10px;
    border-radius: 15px;
    font-size: 0.85rem;
    margin-top: 5px;
}

.admin-articles {
    border-top: 1px solid var(--gray-dark);
    padding-top: 15px;
    margin-top: 15px;
}

.admin-articles h4 {
    font-size: 1rem;
    margin-bottom: 10px;
    color: var(--dark);
}

.article-item {
    display: flex;
    align-items: center;
    margin-bottom: 8px;
    padding: 8px 0;
}

.article-item:not(:last-child) {
    border-bottom: 1px dashed var(--gray-dark);
}

.article-icon {
    color: var(--primary);
    margin-right: 10px;
}

.article-title {
    flex: 1;
    font-size: 0.95rem;
    color: var(--text);
}
/* 访问量计数器 */
.visit-counter {
    display: flex;
    align-items: center;
    margin-right: 20px;
    background: rgba(0, 188, 212, 0.2);
    padding: 8px 15px;
    border-radius: 20px;
    font-weight: 500;
    color: var(--accent);
    transition: all 0.3s ease;
}

.visit-counter i {
    margin-right: 8px;
    font-size: 18px;
}

.visit-counter:hover {
    background: rgba(0, 188, 212, 0.3);
    transform: scale(1.05);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .visit-counter {
        margin-right: 10px;
        padding: 6px 12px;
        font-size: 14px;
    }
}
.captcha-canvas {
    border-radius: 4px;
    background-color: #f8f9fa;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.captcha-canvas:hover {
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.captcha-refresh {
    color: var(--primary);
    cursor: pointer;
    margin-left: 10px;
    font-size: 1.2rem;
    transition: transform 0.3s;
}

.captcha-refresh:hover {
    transform: rotate(90deg);
}
/* 添加验证码刷新按钮样式 */
.captcha-refresh {
  color: var(--primary);
  cursor: pointer;
  margin-left: 10px;
  font-size: 1.2rem;
  transition: transform 0.3s;
}

.captcha-refresh:hover {
  transform: rotate(90deg);
  color: var(--primary-light);
}
/* style.css */
.avatar-upload-container {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.avatar-preview {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 10px;
  border: 2px solid var(--primary);
}

.upload-btn {
  background: var(--primary-light);
  color: white;
  padding: 6px 12px;
  border-radius: 4px;
  cursor: pointer;
  margin-bottom: 10px;
}