/* ============================================================
   研究生个人主页 - 简历风格样式
   ============================================================ */

:root {
    --primary:       #8da4fb;
    --primary-dark:  #7b94f0;
    --primary-light: #eef1ff;
    --accent:        #10b981;
    --dark:          #1a1f36;
    --body-bg:       #f4f6fb;
    --sidebar-bg:    #ffffff;
    --sidebar-text:  #4a5568;
    --sidebar-head:  #1a202c;
    --sidebar-muted: #a0aec0;
    --white:         #ffffff;
    --border:        #e2e8f0;
    --text:          #2d3748;
    --muted:         #718096;
    --shadow:        0 1px 4px rgba(0,0,0,0.08);
    --radius:        6px;
    --nav-h:         52px;
}

/* ── 基础 ── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 14px; }
body {
    font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text);
    background: var(--body-bg);
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }

/* ── 简历主布局 ── */
.cv-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    min-height: 100vh;
    max-width: 1200px;
    margin: 0 auto;
    box-shadow: 0 4px 24px rgba(0,0,0,0.08);
}

/* ── 左侧边栏 ── */
.cv-sidebar {
    background: var(--sidebar-bg);
    padding: 1.75rem 1.25rem;
    display: flex; flex-direction: column; gap: 0;
    border-right: 1px solid var(--border);
}

/* 头像区 */
.profile-block {
    text-align: center;
    padding-bottom: 1.25rem;
}
.profile-avatar {
    width: 100%;
    aspect-ratio: 1;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 14px;
    margin-bottom: .75rem;
    display: flex; align-items: center; justify-content: center;
    font-size: 4rem;
    border: 3px solid var(--border);
}
.profile-name {
    color: var(--sidebar-head); font-size: 1.1rem; font-weight: 700;
    margin-bottom: 0;
}
.profile-title {
    color: var(--primary); font-size: .78rem; font-weight: 500;
    margin-bottom: .4rem;
}
.profile-school {
    color: var(--muted); font-size: .75rem;
    display: flex; align-items: center; justify-content: center; gap: .3rem;
}
.profile-school i { font-size: .7rem; }

/* 分割线 */
.sidebar-divider {
    height: 1px;
    background: var(--border);
    margin: .75rem 0;
}

/* 侧栏 section */
.sidebar-section { margin-bottom: .25rem; }
.sidebar-heading {
    color: var(--sidebar-muted);
    font-size: .65rem; font-weight: 600;
    letter-spacing: .1em;
    text-transform: uppercase;
    margin-bottom: .65rem;
}

/* 基本信息列表 */
.info-list { list-style: none; display: flex; flex-direction: column; gap: .5rem; }
.info-list li {
    display: flex; align-items: flex-start; gap: .6rem;
    background: var(--primary);
    padding: .4rem .7rem;
    border-radius: var(--radius);
}
.info-list i {
    color: var(--white); font-size: .75rem;
    margin-top: .15rem; width: 14px; text-align: center;
    flex-shrink: 0;
}
.info-list div { display: flex; flex-direction: column; }
.info-label { color: rgba(255,255,255,.7); font-size: .68rem; line-height: 1.2; }
.info-val   { color: var(--white); font-size: .78rem; font-weight: 500; }

/* 教育背景 */
.edu-item { margin-bottom: .9rem; }
.edu-item:last-child { margin-bottom: 0; }
.edu-year   { color: var(--primary-light); font-size: .68rem; margin-bottom: .1rem; }
.edu-degree { color: var(--sidebar-head);  font-size: .82rem; font-weight: 600; }
.edu-school { color: var(--sidebar-text);  font-size: .75rem; }
.edu-note   { color: var(--sidebar-muted); font-size: .68rem; }

/* 联系方式 */
.contact-list { list-style: none; display: flex; flex-direction: column; gap: .5rem; }
.contact-list a {
    display: flex; align-items: center; gap: .5rem;
    color: var(--white); font-size: .75rem; font-weight: 500;
    transition: transform .15s, box-shadow .2s;
    padding: .4rem .7rem;
    border-radius: var(--radius);
    background: var(--primary);
    text-decoration: none;
}
.contact-list a:hover { color: var(--white); transform: translateX(3px); box-shadow: 0 3px 10px rgba(74,108,247,.35); }
.contact-list i {
    font-size: .8rem; flex-shrink: 0;
}

/* ── 右侧主内容 ── */
.cv-main {
    background: var(--white);
    padding: 1.5rem 2rem;
    display: flex; flex-direction: column; gap: 0;
    overflow: hidden;
}

/* Section 基础 */
.cv-section {
    padding: 1.1rem 0;
    border-bottom: 1px solid var(--border);
}
.cv-section:last-child { border-bottom: none; }
.cv-section-title {
    font-size: .75rem; font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: .08em;
    margin-bottom: .75rem;
    display: flex; align-items: center; gap: .4rem;
}
.cv-section-title::before {
    content: '';
    display: inline-block; width: 3px; height: 1em;
    background: var(--primary); border-radius: 2px;
}

/* 个人简介 */
.bio-text {
    font-size: .88rem; color: var(--text); line-height: 1.75;
}

/* 研究方向网格 */
.research-grid {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: .6rem;
}
.research-item {
    display: flex; align-items: flex-start; gap: .65rem;
    padding: .6rem .75rem;
    background: var(--primary-light);
    border-radius: var(--radius);
    border-left: 3px solid var(--primary);
}
.research-item i { color: var(--primary); font-size: .9rem; margin-top: .1rem; flex-shrink: 0; }
.research-item strong { font-size: .82rem; color: var(--dark); display: block; margin-bottom: .1rem; }
.research-item p { font-size: .75rem; color: var(--muted); margin: 0; }

/* 论文列表 */
.pub-list { display: flex; flex-direction: column; gap: .5rem; }

.pub-collapsible {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: border-color .2s;
}
.pub-collapsible:hover,
.pub-collapsible.open { border-color: var(--primary); }

/* 标题行 */
.pub-main {
    display: flex; align-items: flex-start; gap: .65rem;
    padding: .6rem .75rem;
    cursor: pointer;
    transition: background .15s;
}
.pub-main:hover { background: var(--primary-light); }
.pub-collapsible.open .pub-main { background: var(--primary-light); }

.pub-arrow {
    flex-shrink: 0; margin-top: .25rem;
    font-size: .65rem; color: var(--muted);
    transition: transform .25s ease;
}
.pub-collapsible.open .pub-arrow { transform: rotate(180deg); }

/* 摘要展开区 */
.pub-abstract {
    max-height: 0; overflow: hidden;
    transition: max-height .35s ease, padding .25s ease;
    border-top: 0px solid var(--border);
}
.pub-collapsible.open .pub-abstract {
    max-height: 2000px;
    padding: .5rem .75rem .65rem 2.3rem;
    border-top: 1px solid var(--border);
}
.pub-abstract p {
    font-size: .78rem; color: var(--muted);
    line-height: 1.75; font-style: italic;
}

/* 展开后分条详情 */
.pub-details {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: .2rem .6rem;
    font-size: .78rem;
    line-height: 1.6;
}
.pub-details dt {
    color: var(--muted);
    font-weight: 400;
    white-space: nowrap;
}
.pub-details dd {
    color: var(--text);
    font-weight: 500;
    font-style: normal;
}
.pub-badge {
    flex-shrink: 0;
    display: inline-block;
    padding: .15rem .45rem;
    border-radius: 3px;
    font-size: .65rem; font-weight: 700;
    letter-spacing: .03em;
    margin-top: .1rem;
}
.pub-badge.conf    { background: #dbeafe; color: #1d4ed8; }

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: .4rem;
}
.project-tags span {
    display: inline-block;
    padding: .2rem .6rem;
    border-radius: var(--radius);
    font-size: .72rem;
    font-weight: 500;
    background: var(--primary);
    color: var(--white);
    letter-spacing: .02em;
}
.pub-badge.journal { background: #d1fae5; color: #065f46; }
.pub-badge.preprint{ background: #fef3c7; color: #92400e; }
.pub-info { flex: 1; }
.pub-title { font-size: .83rem; color: var(--text); font-weight: 500; margin-bottom: .2rem; line-height: 1.5; }
.pub-meta  { font-size: .75rem; color: var(--muted); }
.pub-doi   { font-size: .68rem; color: var(--muted); margin-top: .15rem; }
.pub-doi i { font-size: .6rem; margin-right: .2rem; color: var(--primary); }
.pub-doi a { color: var(--primary); font-family: 'Courier New', monospace; font-size: .68rem; }

/* 分页导航 */
.pager { margin-top: .5rem; }
.pager-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: .25rem;
}
.pager-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 30px;
    height: 28px;
    padding: 0 .45rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: .75rem;
    color: var(--text);
    cursor: pointer;
    transition: all .15s;
    user-select: none;
}
.pager-btn:hover:not(.disabled):not(.active) {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}
.pager-btn.active {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
    font-weight: 600;
}
.pager-collapse {
    background: none;
    border: 1px dashed var(--border);
    color: var(--muted);
    margin-right: .3rem;
}
.pager-collapse:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}
.pager-btn.disabled {
    color: var(--sidebar-muted);
    cursor: default;
    opacity: .5;
}
.pager-dots {
    color: var(--muted);
    font-size: .75rem;
    padding: 0 .2rem;
}

/* 隐藏条目（默认只显示前3条） */
.diary-hidden, .pub-hidden { display: none; }

/* 展开更多按钮（保留备用） */
.pub-toggle-btn {
    display: block;
    width: 100%;
    padding: .45rem 0;
    margin-top: .4rem;
    background: none;
    border: 1px dashed var(--border);
    border-radius: var(--radius);
    color: var(--primary);
    font-size: .78rem;
    font-weight: 500;
    cursor: pointer;
    transition: all .2s;
}
.pub-toggle-btn:hover {
    background: var(--primary-light);
    border-color: var(--primary);
}
.pub-link  { color: var(--white); font-weight: 600; margin-left: .2rem; background: var(--primary); padding: .15rem .55rem; border-radius: var(--radius); text-decoration: none; font-size: .7rem; display: inline-block; transition: transform .15s, box-shadow .2s; }
.pub-link:hover { color: var(--white); background: var(--primary-dark); transform: translateX(2px); box-shadow: 0 3px 10px rgba(74,108,247,.35); }

/* 项目经历 */
.project-list { display: flex; flex-direction: column; gap: .5rem; }

.project-item {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: border-color .2s;
}
.project-item:hover { border-color: var(--primary); }

.project-item.proj-hidden { display: none; }

.proj-main {
    display: flex; align-items: flex-start; gap: .65rem;
    padding: .6rem .75rem;
}

.proj-badge {
    flex-shrink: 0;
    display: inline-block;
    padding: .15rem .45rem;
    border-radius: 3px;
    font-size: .65rem; font-weight: 700;
    letter-spacing: .03em;
    margin-top: .1rem;
    background: #dbeafe; color: #1d4ed8;
}
.proj-info { flex: 1; }
.proj-title { font-size: .83rem; color: var(--text); font-weight: 500; margin-bottom: .2rem; line-height: 1.5; }
.proj-meta  { font-size: .75rem; color: var(--muted); margin-bottom: .15rem; }
.proj-desc  { font-size: .78rem; color: var(--muted); line-height: 1.6; }

/* 技能 + 获奖 双栏 */
.two-col-section {
    display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem;
    padding: 1.1rem 0;
    border-bottom: 1px solid var(--border);
}
.two-col-section .cv-section { padding: 0; border-bottom: none; }

/* ── 日记/动态 集成版 ── */
.diary-list { display: flex; flex-direction: column; gap: 0; }

.diary-entry {
    border-bottom: 1px dashed var(--border);
}
.diary-entry:last-child { border-bottom: none; }

/* 标题行 */
.diary-header {
    display: flex; align-items: center; gap: .55rem;
    padding: .55rem 0;
    cursor: pointer;
    user-select: none;
    transition: background .15s;
    border-radius: var(--radius);
}
.diary-header:hover { background: var(--primary-light); padding-left: .4rem; }

.diary-dot {
    width: 7px; height: 7px; flex-shrink: 0;
    background: var(--primary); border-radius: 50%;
}

/* 分类徽章 */
.diary-tag {
    flex-shrink: 0;
    font-size: .62rem; font-weight: 700;
    padding: .1rem .4rem; border-radius: 3px;
    letter-spacing: .03em;
}
.tag-paper  { background: #dbeafe; color: #1d4ed8; }
.tag-open   { background: #d1fae5; color: #065f46; }
.tag-think  { background: #fef3c7; color: #92400e; }
.tag-share  { background: #ede9fe; color: #5b21b6; }
.tag-event  { background: #fee2e2; color: #991b1b; }

.diary-time {
    flex-shrink: 0;
    font-size: .72rem; color: var(--primary);
    width: 56px;
}

.diary-title {
    flex: 1;
    font-size: .85rem; font-weight: 500; color: var(--text);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.diary-arrow {
    flex-shrink: 0;
    font-size: .65rem; color: var(--muted);
    transition: transform .25s ease;
}
.diary-entry.open .diary-arrow { transform: rotate(180deg); }

/* 展开内容 */
.diary-body {
    max-height: 0; overflow: hidden;
    transition: max-height .35s ease, padding .25s ease;
    padding: 0 0 0 1.2rem;
    border-left: 2px solid var(--primary-light);
    margin-left: .35rem;
}
.diary-entry.open .diary-body {
    max-height: 600px;
    padding: .5rem .75rem .75rem 1rem;
    margin-bottom: .4rem;
}
.diary-body p {
    font-size: .82rem; color: var(--muted);
    line-height: 1.75; margin-bottom: .4rem;
}
.diary-body p:last-child { margin-bottom: 0; }
.diary-body ul {
    margin: .3rem 0 .4rem 1.2rem;
    font-size: .82rem; color: var(--muted); line-height: 1.75;
}
.diary-body strong { color: var(--text); }
.diary-body a { color: var(--primary); }

/* ── 页脚 ── */
.footer {
    background: var(--dark); color: #94a3b8;
    padding: .9rem 1.5rem;
    margin-top: 0;
}
.footer-inner {
    max-width: 1200px; margin: 0 auto;
    display: flex; justify-content: space-between; align-items: center;
    font-size: .78rem;
}
.footer-socials { display: flex; gap: .9rem; }
.footer-socials a {
    color: #94a3b8; font-size: .9rem;
    transition: color .2s;
}
.footer-socials a:hover { color: var(--white); }

/* ── 二维码弹出层 ── */
.qr-overlay {
    display: none;
    position: fixed; inset: 0;
    background: rgba(0,0,0,.5);
    z-index: 999;
    justify-content: center; align-items: center;
}
.qr-card {
    background: var(--white);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0,0,0,.2);
    max-width: 260px;
}
.qr-title {
    font-size: .9rem; font-weight: 600; color: var(--text);
    margin-bottom: .75rem;
}
.qr-card img {
    width: 200px; height: 200px;
    object-fit: contain;
    border-radius: 8px;
    border: 1px solid var(--border);
}
.qr-placeholder {
    display: flex; flex-direction: column;
    align-items: center; justify-content: center; gap: .5rem;
    width: 200px; height: 200px;
    margin: 0 auto;
    border: 2px dashed var(--border);
    border-radius: 8px;
    color: var(--muted);
}
.qr-placeholder i { font-size: 2.5rem; }
.qr-placeholder span { font-size: .78rem; }
.qr-hint {
    font-size: .7rem; color: var(--muted);
    margin-top: .6rem;
}

/* ── 响应式 ── */
@media (max-width: 900px) {
    .cv-layout { grid-template-columns: 210px 1fr; }
    .research-grid { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
    .cv-layout { grid-template-columns: 1fr; }
    .cv-sidebar { padding: 1.25rem 1rem; }
    .profile-avatar { width: 100%; font-size: 3rem; }
    .cv-main { padding: 1rem 1rem; }
    .footer-inner { flex-direction: column; gap: .5rem; text-align: center; }
}