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

:root {
    --primary-color: #3498db;
    --secondary-color: #2c3e50;
    --qq-color: #12B7F5;
    --hidden-color: #9b59b6;
    --background-color: #f8f9fa;
    --card-color: #ffffff;
    --text-color: #333333;
    --border-color: #e0e0e0;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --avatar-size: 180px;
}

[data-theme="dark"] {
    --primary-color: #1abc9c;
    --secondary-color: #34495e;
    --qq-color: #0D9CD8;
    --hidden-color: #8e44ad;
    --background-color: #1a1a2e;
    --card-color: #16213e;
    --text-color: #f0f0f0;
    --border-color: #2c3e50;
    --shadow-color: rgba(0, 0, 0, 0.3);
}

body {
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: var(--transition);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background-image: radial-gradient(circle at 10% 20%, rgba(18, 183, 245, 0.05) 0%, transparent 20%);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 顶部导航栏 */
header {
    background-color: var(--card-color);
    box-shadow: 0 2px 10px var(--shadow-color);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    transition: var(--transition);
}

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

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo-icon {
    margin-right: 10px;
    font-size: 1.8rem;
}

.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-color);
    font-size: 1.2rem;
    padding: 8px;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.theme-toggle:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .theme-toggle:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* 主体内容 */
main {
    padding: 40px 0;
    min-height: calc(100vh - 160px);
}

.profile-card {
    background-color: var(--card-color);
    border-radius: 12px;
    box-shadow: 0 5px 15px var(--shadow-color);
    padding: 40px;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.profile-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(18, 183, 245, 0.1) 0%, transparent 70%);
    transform: rotate(30deg);
    z-index: 0;
}

.profile-content {
    position: relative;
    z-index: 1;
}

.name {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-weight: 700;
    letter-spacing: -0.5px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.tagline {
    font-size: 1.2rem;
    color: var(--text-color);
    opacity: 0.8;
    margin-bottom: 30px;
    font-weight: 400;
}

.divider {
    height: 2px;
    background: linear-gradient(to right, transparent, var(--qq-color), transparent);
    border: none;
    margin: 30px 0;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.input-section {
    margin: 30px 0;
}

.search-input {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid var(--border-color);
    border-radius: 50px;
    font-size: 1rem;
    background-color: var(--card-color);
    color: var(--text-color);
    transition: var(--transition);
    outline: none;
    margin-bottom: 20px;
    font-family: 'Noto Sans SC', sans-serif;
    box-shadow: inset 0 2px 5px rgba(0,0,0,0.05);
}

.search-input:focus {
    border-color: var(--qq-color);
    box-shadow: 0 0 0 3px rgba(18, 183, 245, 0.2), inset 0 2px 5px rgba(0,0,0,0.05);
}

.button-group {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 25px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    border: none;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transform: translateY(0);
    font-family: 'Poppins', sans-serif;
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(to right, rgba(255,255,255,0) 0%, rgba(255,255,255,0.3) 50%, rgba(255,255,255,0) 100%);
    transform: rotate(30deg) translate(-20px, -100px);
    transition: all 0.8s;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.btn:hover::after {
    transform: rotate(30deg) translate(100px, 100px);
}

.btn:active {
    transform: translateY(1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

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

.btn-avatar {
    background-color: #2ecc71;
    color: white;
}

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

.skills-section {
    margin-top: 40px;
}

.skills-title {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--primary-color);
    font-weight: 600;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 15px;
    max-width: 600px;
    margin: 0 auto;
}

.skill-item {
    background-color: var(--background-color);
    padding: 12px 15px;
    border-radius: 8px;
    text-align: center;
    font-weight: 600;
    transition: var(--transition);
    border: 1px solid var(--border-color);
    text-decoration: none;
    display: block;
    color: var(--text-color);
}

.skill-item:hover {
    background-color: var(--qq-color);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

/* 底部版权 */
footer {
    background-color: var(--card-color);
    padding: 30px 0;
    text-align: center;
    box-shadow: 0 -2px 10px var(--shadow-color);
    transition: var(--transition);
    font-family: 'Poppins', sans-serif;
}

footer p {
    margin-bottom: 15px;
    color: var(--text-color);
    opacity: 0.8;
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
    font-weight: 500;
}

.footer-links a:hover {
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .profile-card {
        padding: 30px 20px;
    }
    
    .name {
        font-size: 2rem;
    }
    
    .button-group {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
}

/* 加载动画 */
.loader {
    display: inline-block;
    width: 30px;
    height: 30px;
    border: 3px solid rgba(18, 183, 245, 0.3);
    border-radius: 50%;
    border-top-color: var(--qq-color);
    animation: spin 1s ease-in-out infinite;
    margin: 20px auto;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.qq-icon {
    color: var(--qq-color);
    font-size: 2rem;
    margin-bottom: 15px;
}

/* 头像展示样式 */
.avatar-container {
    display: none;
    text-align: center;
    margin: 30px auto;
    max-width: var(--avatar-size);
}

.avatar-image {
    width: var(--avatar-size);
    height: var(--avatar-size);
    border-radius: 18px;
    object-fit: cover;
    border: 3px solid var(--border-color);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
    transition: all 0.4s ease;
}

.avatar-image:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.2);
}

.avatar-title {
    margin-top: 15px;
    font-size: 1.2rem;
    color: var(--text-color);
    font-weight: 600;
}

/* 工具提示 */
.tooltip {
    position: relative;
    display: inline-block;
    cursor: pointer;
}

.tooltip .tooltiptext {
    visibility: hidden;
    width: 200px;
    background-color: #555;
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 8px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    margin-left: -100px;
    opacity: 0;
    transition: opacity 0.3s;
    font-size: 0.85rem;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}

.feature-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: linear-gradient(45deg, #ff6b6b, #ff8e53);
    color: white;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    box-shadow: 0 3px 8px rgba(0,0,0,0.2);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.api-info {
    background-color: rgba(155, 89, 182, 0.1);
    border-left: 4px solid var(--hidden-color);
    padding: 15px;
    border-radius: 0 8px 8px 0;
    margin: 20px 0;
    text-align: left;
}

.api-info h4 {
    color: var(--hidden-color);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.api-info p {
    font-size: 0.9rem;
    line-height: 1.5;
}