/* ============================================
   关于页面专用样式
   ============================================ */

/* 兼容旧变量名 */
:root {
    --shadow: var(--shadow-md);
    --shadow-hover: var(--shadow-lg);
}

/* ============================================
   Hero 区域
   ============================================ */
.about-hero {
    text-align: center;
    padding: 3.5rem 2rem 3rem;
    background: linear-gradient(135deg, var(--primary-light), var(--bg-primary), rgba(6,182,212,0.08));
    border-radius: var(--radius-xl, 16px);
    box-shadow: var(--shadow);
    margin-bottom: 2.5rem;
    position: relative;
    overflow: hidden;
}

.about-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(99,102,241,0.06) 0%, transparent 60%);
    animation: heroFloat 20s ease-in-out infinite;
    pointer-events: none;
}

.about-hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    right: -30%;
    width: 60%;
    height: 60%;
    background: radial-gradient(circle, rgba(236,72,153,0.04) 0%, transparent 60%);
    animation: heroFloat2 18s ease-in-out infinite reverse;
    pointer-events: none;
}

@keyframes heroFloat {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(20px, -20px) rotate(1deg); }
    66% { transform: translate(-10px, 10px) rotate(-1deg); }
}

@keyframes heroFloat2 {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-25px, -15px); }
}

/* 头像环 */
.about-avatar-ring {
    position: relative;
    display: inline-block;
    margin-bottom: 1.5rem;
}

.about-avatar-ring::before {
    content: '';
    position: absolute;
    inset: -5px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary), var(--accent), var(--primary));
    background-size: 300% 300%;
    z-index: 0;
    animation: ringGradient 6s ease infinite;
}

@keyframes ringGradient {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.about-avatar-ring img {
    position: relative;
    z-index: 1;
    width: 140px;
    height: 140px;
    border-radius: 50%;
    object-fit: cover;
    border: 5px solid var(--bg-primary);
    box-shadow: var(--shadow-lg);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.about-avatar-ring img:hover {
    transform: scale(1.06) rotate(3deg);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(99,102,241,0.2);
}

/* 名字渐变文字 */
.about-name {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    position: relative;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 状态徽章 */
.about-status-badges {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    position: relative;
    flex-wrap: wrap;
}

.about-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.about-badge.badge-primary {
    background: rgba(99,102,241,0.1);
    color: var(--primary);
    border: 1px solid rgba(99,102,241,0.2);
}

.about-badge.badge-green {
    background: rgba(16,185,129,0.1);
    color: #059669;
    border: 1px solid rgba(16,185,129,0.2);
}

[data-theme="dark"] .about-badge.badge-green {
    color: #34d399;
    border-color: rgba(52,211,153,0.2);
}

.about-badge.badge-accent {
    background: rgba(6,182,212,0.1);
    color: var(--accent);
    border: 1px solid rgba(6,182,212,0.2);
}

.about-badge .badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
    animation: badgePulse 2s ease-in-out infinite;
}

@keyframes badgePulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* 标语 */
.about-tagline {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
    position: relative;
    line-height: 1.6;
}

/* 社交链接 */
.about-hero .social-links {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    position: relative;
}

.about-hero .social-link {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.05rem;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    text-decoration: none;
    touch-action: manipulation;
}

.about-hero .social-link:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(99,102,241,0.35);
}

.about-hero .social-link.social-github:hover {
    background: #24292f;
    border-color: #24292f;
    box-shadow: 0 6px 20px rgba(36,41,47,0.35);
}

.about-hero .social-link.social-weibo:hover {
    background: #e6162d;
    border-color: #e6162d;
    box-shadow: 0 6px 20px rgba(230,22,45,0.35);
}

.about-hero .social-link.social-zhihu:hover {
    background: #0066ff;
    border-color: #0066ff;
    box-shadow: 0 6px 20px rgba(0,102,255,0.35);
}

.about-hero .social-link.social-qq:hover {
    background: #12b7f5;
    border-color: #12b7f5;
    box-shadow: 0 6px 20px rgba(18,183,245,0.35);
}

.about-hero .social-link.social-bilibili:hover {
    background: #fb7299;
    border-color: #fb7299;
    box-shadow: 0 6px 20px rgba(251,114,153,0.35);
}

.about-hero .social-link.social-email:hover {
    background: var(--accent);
    border-color: var(--accent);
    box-shadow: 0 6px 20px rgba(6,182,212,0.35);
}

/* ============================================
   Story Quote
   ============================================ */
.story-quote {
    position: relative;
    padding: 1.5rem 1.75rem 1.5rem 2rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--primary-light), rgba(6,182,212,0.06));
    border-left: 4px solid var(--primary);
    border-radius: 0 var(--radius-lg, 12px) var(--radius-lg, 12px) 0;
    font-style: italic;
    font-size: 1.08rem;
    line-height: 1.85;
    color: var(--text-primary);
}

.story-quote::before {
    content: '\201C';
    position: absolute;
    top: 0.25rem;
    left: 0.5rem;
    font-size: 2.5rem;
    font-family: Georgia, serif;
    color: var(--primary);
    opacity: 0.3;
    line-height: 1;
}

/* ============================================
   Section 通用卡片
   ============================================ */
.about-section {
    padding: 2rem;
    background: var(--bg-primary);
    margin-bottom: 1.5rem;
    border-radius: var(--radius-xl, 16px);
    box-shadow: var(--shadow);
    transition: box-shadow 0.3s ease, transform 0.3s ease;
    border: 1px solid var(--border-color);
}

.about-section:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

.about-section-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--primary-light);
}

.about-section-title i {
    color: var(--primary);
    font-size: 1.2rem;
}

/* ============================================
   Bio Text
   ============================================ */
.bio-text p {
    margin-bottom: 1rem;
    line-height: 1.85;
    color: var(--text-secondary);
}

.bio-text p:last-child {
    margin-bottom: 0;
}

/* ============================================
   技能条
   ============================================ */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.skill-category {
    background-color: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--radius-xl, 16px);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.skill-category:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.skill-category h3 {
    margin-bottom: 1.25rem;
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.skill-category h3 i {
    color: var(--primary);
    font-size: 0.95rem;
}

.skill-bar {
    margin-bottom: 1rem;
}

.skill-bar:last-child {
    margin-bottom: 0;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.4rem;
    font-size: 0.9rem;
}

.skill-name {
    font-weight: 500;
    color: var(--text-primary);
}

.skill-level {
    color: var(--primary);
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

.skill-progress {
    height: 8px;
    background-color: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.skill-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 4px;
    transition: width 1.5s ease-in-out;
    animation: progressAnimation 1.5s ease-out forwards;
    position: relative;
}

.skill-progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 20px;
    height: 100%;
    background: rgba(255,255,255,0.3);
    border-radius: 0 4px 4px 0;
}

@keyframes progressAnimation {
    from { width: 0; }
}

/* ============================================
   兴趣爱好
   ============================================ */
.hobbies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 1.25rem;
}

.hobby-item {
    background: var(--bg-secondary);
    padding: 1.5rem 1rem;
    border-radius: var(--radius-lg, 12px);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid transparent;
    touch-action: manipulation;
}

.hobby-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-light);
}

.hobby-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 0.85rem;
    font-size: 1.35rem;
    transition: transform 0.3s ease;
}

.hobby-item:hover .hobby-icon {
    transform: scale(1.1) rotate(-5deg);
}

.hobby-icon.hobby-blue {
    background: rgba(99,102,241,0.1);
    color: var(--primary);
}

.hobby-icon.hobby-pink {
    background: rgba(236,72,153,0.1);
    color: var(--secondary);
}

.hobby-icon.hobby-cyan {
    background: rgba(6,182,212,0.1);
    color: var(--accent);
}

.hobby-icon.hobby-green {
    background: rgba(16,185,129,0.1);
    color: #059669;
}

[data-theme="dark"] .hobby-icon.hobby-green {
    color: #34d399;
}

.hobby-icon.hobby-orange {
    background: rgba(245,158,11,0.1);
    color: #d97706;
}

.hobby-icon.hobby-purple {
    background: rgba(139,92,246,0.1);
    color: #7c3aed;
}

.hobby-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

/* ============================================
   Timeline
   ============================================ */
.about-section .timeline {
    position: relative;
    padding-left: 30px;
    margin-top: 10px;
}

.about-section .timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary), var(--secondary), var(--accent));
    border-radius: 1px;
}

.about-section .timeline-item {
    position: relative;
    margin-bottom: 1.5rem;
    padding-left: 25px;
    transition: transform 0.2s ease;
}

.about-section .timeline-item:last-child {
    margin-bottom: 0;
}

.about-section .timeline-item:hover {
    transform: translateX(4px);
}

.about-section .timeline-item::before {
    content: '';
    position: absolute;
    left: -26px;
    top: 5px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--primary);
    border: 2px solid var(--bg-primary);
    box-shadow: 0 0 0 3px var(--primary-light);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.about-section .timeline-item:hover::before {
    transform: scale(1.3);
    box-shadow: 0 0 0 4px var(--primary-light), 0 0 0 7px rgba(99,102,241,0.1);
}

.timeline-date {
    font-size: 0.85rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 4px;
}

.timeline-title {
    font-size: 1.1rem;
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 6px;
}

.timeline-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ============================================
   建站日志列表
   ============================================ */
.site-log-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.site-log-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 16px;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg, 12px);
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    touch-action: manipulation;
}

.site-log-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-light);
}

.log-icon {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background-color: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.log-info {
    flex: 1;
    min-width: 0;
}

.log-title {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
    margin-bottom: 3px;
}

.log-desc {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.5;
}

.log-arrow {
    color: var(--text-secondary);
    font-size: 0.85rem;
    flex-shrink: 0;
    transition: all var(--transition-normal);
}

.site-log-item:hover .log-arrow {
    color: var(--primary);
    transform: translateX(3px);
}

/* ============================================
   联系方式
   ============================================ */
.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.25rem;
}

.contact-item {
    background-color: var(--bg-secondary);
    padding: 1.25rem 1.5rem;
    border-radius: var(--radius-lg, 12px);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    touch-action: manipulation;
}

.contact-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-light);
}

.contact-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    flex-shrink: 0;
    border: 1px solid var(--primary-light);
}

.contact-icon.icon-email {
    background: rgba(6,182,212,0.1);
    color: var(--accent);
    border-color: rgba(6,182,212,0.15);
}

.contact-icon.icon-github {
    background: rgba(36,41,47,0.08);
    color: #24292f;
    border-color: rgba(36,41,47,0.12);
}

[data-theme="dark"] .contact-icon.icon-github {
    background: rgba(255,255,255,0.08);
    color: #e6edf3;
    border-color: rgba(255,255,255,0.12);
}

.contact-icon.icon-weibo {
    background: rgba(230,22,45,0.08);
    color: #e6162d;
    border-color: rgba(230,22,45,0.12);
}

.contact-icon.icon-codemao {
    background: rgba(99,102,241,0.1);
    color: var(--primary);
    border-color: rgba(99,102,241,0.15);
}

.contact-icon.icon-csdn {
    background: rgba(245,158,11,0.1);
    color: #d97706;
    border-color: rgba(245,158,11,0.15);
}

.contact-icon.icon-gitee {
    background: rgba(199,29,35,0.08);
    color: #c71d23;
    border-color: rgba(199,29,35,0.12);
}

.contact-icon.icon-gitcode {
    background: rgba(245,108,108,0.08);
    color: #ef4444;
    border-color: rgba(245,108,108,0.12);
}

.contact-icon.icon-bilibili {
    background: rgba(251,114,153,0.08);
    color: #fb7299;
    border-color: rgba(251,114,153,0.12);
}

.contact-icon.icon-zhihu {
    background: rgba(0,102,255,0.08);
    color: #0066ff;
    border-color: rgba(0,102,255,0.12);
}

.contact-details h3 {
    margin-bottom: 4px;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
}

.contact-details p {
    margin: 0;
    font-size: 0.88rem;
}

.contact-details p a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.contact-details p a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* ============================================
   CTA 区域
   ============================================ */
.about-cta {
    text-align: center;
    padding: 2.5rem 2rem;
    background: linear-gradient(135deg, rgba(99,102,241,0.06), rgba(236,72,153,0.04), rgba(6,182,212,0.04));
    border-radius: var(--radius-xl, 16px);
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-color);
}

.about-cta h3 {
    font-size: 1.4rem;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-weight: 700;
}

.about-cta p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.5rem;
    border-radius: var(--radius-full);
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    touch-action: manipulation;
}

.cta-btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    box-shadow: 0 4px 15px rgba(99,102,241,0.3);
}

.cta-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99,102,241,0.4);
    color: #fff;
}

.cta-btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.cta-btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1024px) {
    .skills-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .about-hero {
        padding: 2.5rem 1.5rem 2rem;
    }

    .about-section {
        padding: 1.5rem;
    }

    .about-section-title {
        font-size: 1.3rem;
    }

    .hobbies-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
    }

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

@media (max-width: 480px) {
    .about-avatar-ring img {
        width: 120px;
        height: 120px;
    }

    .about-name {
        font-size: 1.9rem;
    }

    .about-tagline {
        font-size: 0.95rem;
    }

    .about-status-badges {
        gap: 0.35rem;
    }

    .about-badge {
        font-size: 0.7rem;
        padding: 0.2rem 0.6rem;
    }

    .hobbies-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-item {
        flex-direction: column;
        text-align: center;
        gap: 0.75rem;
    }

    .skill-category {
        padding: 1rem;
    }

    .skill-name, .skill-level {
        font-size: 0.85rem;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}

/* ============================================
   减少动画偏好
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    .about-hero::before,
    .about-hero::after {
        animation: none;
    }

    .about-avatar-ring::before {
        animation: none;
    }

    .about-avatar-ring img:hover {
        transform: none;
    }

    .about-section:hover {
        transform: none;
    }

    .about-section .timeline-item:hover {
        transform: none;
    }

    .about-section .timeline-item:hover::before {
        transform: none;
    }

    .hobby-item:hover {
        transform: none;
    }

    .hobby-item:hover .hobby-icon {
        transform: none;
    }

    .skill-category:hover {
        transform: none;
    }

    .contact-item:hover {
        transform: none;
    }

    .cta-btn:hover {
        transform: none;
    }

    .about-badge .badge-dot {
        animation: none;
    }

    .skill-progress-bar {
        animation: none;
    }
}