/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    transition: all 0.3s ease;
}

.container {
    max-width: 800px;
    margin: 0 auto;
}

h1 {
    text-align: center;
    color: white;
    margin-bottom: 30px;
    font-size: 2.5rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

/* 个人资料卡片样式 */
.profile-card {
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
    margin-bottom: 30px;
    transition: all 0.3s ease;
}

.profile-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

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

.avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 5px solid #667eea;
    margin-bottom: 15px;
    transition: transform 0.3s ease;
}

.avatar:hover {
    transform: scale(1.1);
}

.profile-header h2 {
    color: #333;
    font-size: 2rem;
    margin-bottom: 5px;
}

.profile-header .title {
    color: #667eea;
    font-size: 1.2rem;
    font-weight: 500;
}

/* 个人信息样式 */
.profile-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
    margin-bottom: 30px;
}

.info-item {
    padding: 15px;
    background: #f8f9fa;
    border-radius: 10px;
    border-left: 4px solid #667eea;
}

.info-item strong {
    color: #333;
    display: block;
    margin-bottom: 5px;
}

.skill-tag {
    display: inline-block;
    background: #667eea;
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
    margin: 2px;
}

/* 个人简介样式 */
.profile-bio {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 30px;
}

.profile-bio h3 {
    color: #333;
    margin-bottom: 10px;
}

.profile-bio p {
    color: #666;
    line-height: 1.6;
}

/* 按钮样式 */
.profile-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 25px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.btn-primary {
    background: #667eea;
    color: white;
}

.btn-primary:hover {
    background: #5a6fd8;
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background: #5a6268;
    transform: translateY(-2px);
}

/* 编辑表单样式 */
.edit-form {
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
    margin-bottom: 30px;
}

.edit-form h3 {
    color: #333;
    margin-bottom: 20px;
    text-align: center;
}

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

.form-group label {
    display: block;
    color: #333;
    margin-bottom: 5px;
    font-weight: 500;
}

.form-input, .form-textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-input:focus, .form-textarea:focus {
    outline: none;
    border-color: #667eea;
}

.form-textarea {
    height: 100px;
    resize: vertical;
}

/* 学习提示样式 */
.learning-tips {
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
}

.learning-tips h3 {
    color: #333;
    margin-bottom: 20px;
    text-align: center;
}

.learning-tips ul {
    list-style: none;
}

.learning-tips li {
    padding: 10px 0;
    border-bottom: 1px solid #e9ecef;
    color: #666;
}

.learning-tips li:last-child {
    border-bottom: none;
}

.learning-tips strong {
    color: #667eea;
}

/* 深色主题样式 */
.dark-theme {
    background: #2c3e50 !important;
    color: white !important;
}

.dark-theme h2,
.dark-theme h3,
.dark-theme strong,
.dark-theme label {
    color: white !important;
}

.dark-theme .info-item,
.dark-theme .profile-bio {
    background: #34495e !important;
    color: white !important;
}

.dark-theme .form-input,
.dark-theme .form-textarea {
    background: #34495e !important;
    color: white !important;
    border-color: #4a5f7a !important;
}

.dark-theme .learning-tips li {
    color: #bdc3c7 !important;
    border-color: #4a5f7a !important;
}

/* 消息提示样式 */
.message {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 15px 20px;
    border-radius: 8px;
    color: white;
    font-weight: 500;
    z-index: 1000;
    animation: slideIn 0.3s ease;
}

.message-success {
    background: #28a745;
}

.message-error {
    background: #dc3545;
}

.message-info {
    background: #17a2b8;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 0 10px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .profile-card,
    .edit-form,
    .learning-tips {
        padding: 20px;
    }
    
    .profile-info {
        grid-template-columns: 1fr;
    }
    
    .profile-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 200px;
    }
}