:root {
  --bg: #f3f4f7;
  --card: #ffffff;
  --text: #1d2333;
  --muted: #6b7285;
  --accent: #c7d3e6;
  --border: rgba(12, 22, 52, 0.08);
  --shadow: 0 20px 50px rgba(55, 63, 104, 0.12);
}

html {
  scroll-behavior: smooth;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  padding: 32px 16px 48px;
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  justify-content: center;
  padding: 16px;
  pointer-events: none;
}

.navbar__list {
  display: flex;
  gap: 8px;
  list-style: none;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 6px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
  pointer-events: auto;
}

.nav-btn {
  display: block;
  text-decoration: none;
  color: var(--muted);
  font-weight: 600;
  padding: 8px 32px;
  border-radius: 999px;
  font-size: 0.95rem;
  transition: all 0.2s ease;
  background: transparent;
  border: none;
  cursor: pointer;
  font-family: inherit;
}

.nav-btn:hover,
.nav-btn:focus {
  color: var(--text);
  background: rgba(0, 0, 0, 0.04);
}

.nav-btn.active {
  background: var(--text);
  color: #fff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Tabs */
.tab-content {
  display: none;
  opacity: 0;
  animation: fadeIn 0.4s ease forwards;
}

.tab-content.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.resume {
  max-width: 1160px;
  margin: 80px auto 0; /* Adjusted top margin for navbar */
  background: var(--card);
  border-radius: 36px;
  padding: 56px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow);
  min-height: 80vh; /* Ensure minimum height for consistency */
}

/* Updated Resume Styles */
.resume__intro {
  display: flex;
  justify-content: center;
  margin-bottom: 60px;
}

.intro__content {
  display: flex;
  flex-direction: row;
  align-items: center;
  text-align: left;
  gap: 48px;
  max-width: 960px;
  width: 100%;
}

.resume__photo {
  width: 180px;
  height: 240px;
  border-radius: 20px;
  overflow: hidden;
  border: 4px solid #fff;
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
  margin-bottom: 0;
  flex-shrink: 0;
}

.resume__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.resume__summary {
  flex: 1;
}

.resume__summary h1 {
  font-size: 2.8rem;
  color: var(--text);
  margin-bottom: 8px;
}

.resume__label {
  display: inline-block;
  font-size: 1rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 16px;
  background: rgba(199, 211, 230, 0.2);
  padding: 4px 12px;
  border-radius: 6px;
}

.summary__desc {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--muted);
  max-width: none;
  margin: 0 0 24px;
}

.summary__tags {
  display: flex;
  gap: 12px;
  justify-content: flex-start;
  flex-wrap: wrap;
}

.summary__tags span {
  font-size: 0.9rem;
  padding: 6px 14px;
  border-radius: 20px;
  background: #fff;
  border: 1px solid var(--border);
  color: var(--muted);
  font-weight: 500;
}

.resume__grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 48px;
  align-items: start;
}

.card {
  background: #fff;
  border-radius: 20px;
  padding: 24px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
  margin-bottom: 24px;
  border: 1px solid rgba(0,0,0,0.03);
}

.card__title {
  font-size: 1.1rem;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  border-bottom: 2px solid #f0f2f5;
  padding-bottom: 12px;
}

.card__title .icon {
  font-size: 1.2rem;
}

.info-item {
  margin-bottom: 16px;
}

.info-item dt {
  font-size: 0.8rem;
  text-transform: uppercase;
  color: #94a3b8;
  margin-bottom: 4px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.info-item dd {
  font-size: 0.95rem;
  color: var(--text);
  font-weight: 500;
}

.info-item a {
  color: var(--text);
  text-decoration: none;
  transition: color 0.2s;
}

.info-item a:hover {
  color: var(--accent);
}

.edu__item {
  padding-left: 12px;
  border-left: 3px solid var(--accent);
}

.edu__school {
  font-size: 1.1rem;
  margin-bottom: 4px;
}

.edu__major {
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.edu__time {
  font-size: 0.85rem;
  color: #94a3b8;
  margin-bottom: 8px;
}

.edu__badge {
  display: inline-block;
  font-size: 0.8rem;
  background: #f0f2f5;
  padding: 4px 8px;
  border-radius: 4px;
  color: var(--muted);
  font-weight: 600;
}

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

.skills-group h3 {
  font-size: 0.9rem;
  color: #94a3b8;
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.skills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skills li {
  font-size: 0.85rem;
  padding: 6px 12px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  color: var(--text);
  font-weight: 500;
}

/* Timeline Styles */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
  padding-left: 20px;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 6px;
  width: 2px;
  background: #e2e8f0;
}

.experience {
  position: relative;
  padding-left: 32px;
  padding-bottom: 40px;
  background: transparent;
  border: none;
  box-shadow: none;
}

.experience:last-child {
  padding-bottom: 0;
}

.experience__marker {
  position: absolute;
  left: 0;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--accent);
  z-index: 1;
}

.experience__content {
  background: #fff;
  padding: 24px;
  border-radius: 16px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.03);
  border: 1px solid rgba(0,0,0,0.02);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.experience__content:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.06);
}

.experience__header {
  margin-bottom: 12px;
}

.experience__meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 4px;
}

.experience h3 {
  font-size: 1.15rem;
  color: var(--text);
}

.experience__time {
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 600;
  background: #f1f5f9;
  padding: 2px 8px;
  border-radius: 4px;
}

.experience__role {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.95rem;
}

.experience__desc {
  color: var(--muted);
  margin-bottom: 16px;
  line-height: 1.6;
}

.experience__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.experience__list li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 8px;
  color: #475569;
  font-size: 0.95rem;
  line-height: 1.6;
}

.experience__list li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: bold;
}

.experience__highlight {
  margin-top: 16px;
  padding: 12px;
  background: #f8fafc;
  border-radius: 8px;
  font-size: 0.9rem;
  color: #475569;
  line-height: 1.6;
  border-left: 3px solid var(--accent);
}

@media (max-width: 960px) {
  .resume__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .resume__sidebar {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
  }
}

@media (max-width: 640px) {
  .resume__sidebar {
    grid-template-columns: 1fr;
  }
  
  .experience__meta {
    flex-direction: column;
    gap: 4px;
  }
  
  .timeline {
    padding-left: 10px;
  }
  
  .timeline::before {
    left: 4px;
  }
  
  .experience__marker {
    left: -2px;
  }
}

/* Works Section adjustments for Tab view */
.works {
  margin-top: 0; /* Remove top margin as it's now inside tab */
  padding: 0; /* Remove padding as it's inside resume container */
  border-radius: 0;
  background: transparent;
  border: none;
  box-shadow: none;
}

.works__header h2 {
  font-size: 1.8rem;
  margin-bottom: 12px;
}

.works__header p {
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 28px;
}

.works__grid {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.works__group {
  padding: 28px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 28px;
  background: #fff;
  box-shadow: 0 12px 35px rgba(16, 24, 40, 0.08);
}

.works__group-head h3 {
  font-size: 1.35rem;
  margin-bottom: 8px;
}

.works__group-head p {
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 18px;
}

.works__group-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 16px;
}

.work-card {
  border-radius: 24px;
  overflow: hidden;
  background: #f8f9fb;
  border: 1px solid var(--border);
  box-shadow: 0 15px 30px rgba(19, 27, 51, 0.08);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
}

.work-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(19, 27, 51, 0.15);
  z-index: 2;
}

.work-card img {
  width: 100%;
  height: auto;
  display: block;
  cursor: zoom-in;
  transition: transform 0.5s ease;
}

.work-card:hover img {
  transform: scale(1.05);
}

.work-card img[data-fill] {
  height: 220px;
  object-fit: cover;
  display: block;
}

.work-card figcaption {
  padding: 16px 18px;
  font-size: 0.95rem;
  color: var(--text);
  background: #fff;
  position: relative;
  z-index: 1;
}

.work-card figcaption strong {
  display: block;
}

.work-card figcaption span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.9rem;
}

.works__placeholder {
  color: var(--muted);
}

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(5, 7, 15, 0.9);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 32px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: all 0.3s ease;
}

.lightbox.is-active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.lightbox__content {
  position: relative;
  max-width: min(1080px, 90vw);
  max-height: 90vh;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
  z-index: 1;
  transform: scale(0.95);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.lightbox.is-active .lightbox__content {
  transform: scale(1);
}

.lightbox__content img {
  width: 100%;
  height: auto;
  max-height: 80vh;
  object-fit: contain;
  border-radius: 18px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.35);
}

.lightbox__close {
  position: absolute;
  top: -16px;
  right: -16px;
  z-index: 2;
  background: #fff;
  border: none;
  color: var(--text);
  font-size: 1.4rem;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox__close:hover {
  background: var(--text);
  color: #fff;
  transform: rotate(90deg);
}

.resume__footer {
  margin-top: 40px;
  text-align: center;
  color: var(--muted);
  position: relative;
  z-index: 1;
}

/* Back to Top */
#back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--text);
  color: #fff;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  z-index: 90;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
}

#back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#back-to-top:hover {
  transform: translateY(-4px);
  background: #000;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.25);
}

@media (max-width: 960px) {
  .resume {
    padding: 40px 28px;
  }

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

  .intro__content {
    flex-direction: column;
    text-align: center;
    gap: 32px;
  }

  .summary__tags {
    justify-content: center;
  }

  .resume__intro {
    align-items: center;
  }

  .resume::after {
    inset: auto 24px 24px;
    top: 55%;
  }

  .works {
    padding: 32px;
  }

  .works__group {
    padding: 22px;
  }
}

@media (max-width: 640px) {
  body {
    padding: 16px;
    padding-top: 80px; /* Space for navbar */
  }

  .navbar {
    padding: 12px;
  }

  .resume {
    padding: 32px 20px;
    margin-top: 0;
  }

  .card,
  .experience {
    padding: 20px;
  }

  .skills {
    grid-template-columns: repeat(auto-fit, minmax(90px, 1fr));
  }

  .works {
    padding: 24px;
  }

  .works__group {
    padding: 18px;
  }

  .works__group-grid {
    grid-template-columns: 1fr;
  }
  
  .lightbox {
    padding: 16px;
  }
  
  .lightbox__close {
    top: 12px;
    right: 12px;
  }
}