.loader-bg {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  width: 100vw;
  background: linear-gradient(120deg, #161b22 60%, #21262d 100%);
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 99999;
}
.loader-spin {
  animation: loader-rotate 1.2s linear infinite;
  margin-bottom: 1.5em;
}
.loader-text {
  color: #FFD700;
  font-size: 1.3em;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-shadow: 0 2px 8px #23863655;
}
@keyframes loader-rotate {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
:root {
  --bg: #0d1117;
  --bg-secondary: #161b22;
  --border: #30363d;
  --text: #c9d1d9;
  --text-secondary: #8b949e;
  --accent: #238636;
  --accent-hover: #2ea043;
  --card: #161b22;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --radius: 8px;
  --font-main: 'Segoe UI', 'Liberation Sans', 'Arial', sans-serif;
}
* { box-sizing: border-box; }
html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-main);
  min-height: 100vh;
}
body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
#app {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}
header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  padding: 0.5rem 2rem;
  display: flex;
  align-items: center;
  gap: 2rem;
  z-index: 10;
}
header .logo {
  width: 36px;
  height: 36px;
  margin-right: 1rem;
  display: flex;
  align-items: center;
}
header nav {
  display: flex;
  gap: 1.5rem;
}
header nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 1.1rem;
  transition: color 0.2s;
}
header nav a.active, header nav a:hover {
  color: var(--text);
}
main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  padding: 2rem 0;
  min-height: 0;
}
.repo-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin: 0 2rem;
}
.repo-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem 1.2rem 1.2rem 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  position: relative;
  transition: transform 0.18s cubic-bezier(.68,-0.55,.27,1.55), box-shadow 0.18s, filter 0.18s;
  cursor: pointer;
}
.repo-card:hover {
  transform: scale(1.04) translateX(18px) skewY(-2deg);
  box-shadow: 0 12px 40px 0 #23863633, 0 1.5px 0 var(--accent);
  border-color: var(--accent);
  filter: brightness(1.08) saturate(1.1);
  z-index: 10;
}
.repo-card.repo-card-active {
  transform: scale(1.04) translateX(18px) skewY(-2deg);
  box-shadow: 0 12px 40px 0 #23863633, 0 1.5px 0 var(--accent);
  border-color: var(--accent);
  filter: brightness(1.08) saturate(1.1);
  z-index: 10;
}
.repo-card.repo-card-active ~ .repo-card {
  filter: blur(1.5px) grayscale(0.3) brightness(0.85) opacity(0.7);
  transform: scale(0.97) skewY(1.5deg);
  z-index: 0;
}
.repo-card .repo-title {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 0.2rem;
}
.repo-card .repo-desc {
  color: var(--text-secondary);
  font-size: 1rem;
  min-height: 2.2em;
}
.repo-card .repo-meta {
  display: flex;
  gap: 1.2rem;
  align-items: center;
  font-size: 0.98rem;
  color: var(--text-secondary);
}
.repo-card .repo-meta .lang {
  display: flex;
  align-items: center;
  gap: 0.4em;
}
.repo-card .repo-meta .lang-dot {
  width: 0.8em;
  height: 0.8em;
  border-radius: 50%;
  display: inline-block;
  background: var(--accent);
}
.repo-card .repo-meta .icon {
  width: 1.1em;
  height: 1.1em;
  vertical-align: middle;
  margin-right: 0.2em;
}
.repo-card .repo-actions {
  margin-top: 0.5rem;
  display: flex;
  gap: 0.7rem;
}
.repo-card .repo-actions button {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 5px;
  padding: 0.4em 1.1em;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s;
}
.repo-card .repo-actions button:hover {
  background: var(--accent-hover);
}
.repo-card .file-list {
  position: absolute;
  left: -260px;
  top: 0;
  width: 240px;
  min-height: 120px;
  background: var(--bg-secondary);
  border: 1.5px solid var(--accent);
  border-radius: var(--radius);
  box-shadow: 0 8px 32px #23863622;
  z-index: 30;
  padding: 1.1rem 1.2rem 1.1rem 1.2rem;
  display: none;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 1.01rem;
  color: var(--text);
  animation: fileListSlideIn 0.32s cubic-bezier(.68,-0.55,.27,1.55);
  box-shadow: 0 8px 32px #23863633;
}
.repo-card:hover .file-list {
  display: flex;
  display: flex;
}

.file-list .file-item {
  cursor: pointer;
  padding: 0.2em 0.5em;
  border-radius: 6px;
  transition: background 0.15s, color 0.15s, transform 0.18s;
  display: flex;
  align-items: center;
  gap: 0.5em;
  background: rgba(22,27,34,0.85);
  box-shadow: 0 1px 4px #0002;
  margin-bottom: 2px;
}
.file-list .file-item:hover {
  background: var(--accent);
  color: #fff;
  transform: scale(1.06) translateX(6px);
  box-shadow: 0 2px 8px #23863633;
}
.file-list .file-item .preview-btn {
  margin-left: auto;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0 0.2em;
  display: flex;
  align-items: center;
  opacity: 0.7;
  transition: opacity 0.2s, filter 0.2s;
}
.file-list .file-item .preview-btn:hover {
  opacity: 1;
  filter: drop-shadow(0 0 4px #238636cc);
}
@keyframes fileListSlideIn {
  from { opacity: 0; transform: translateX(-40px) scale(0.95); }
  to { opacity: 1; transform: none; }
}
.viewer-modal {
  position: fixed;
  inset: 0;
  background: rgba(13,17,23,0.92);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  animation: fadeIn 0.2s;
}
.viewer-content.file-viewer-slide {
  background: var(--bg-secondary);
  border: 2px solid var(--accent);
  border-radius: var(--radius);
  box-shadow: 0 12px 40px #23863633;
  max-width: 540px;
  min-width: 340px;
  max-height: 90vh;
  overflow: auto;
  padding: 2rem 2.5rem 1.5rem 2.5rem;
  color: var(--text);
  font-size: 1.05rem;
  position: relative;
  margin-left: 4vw;
  animation: fileViewerSlideIn 0.38s cubic-bezier(.68,-0.55,.27,1.55);
}
@keyframes fileViewerSlideIn {
  from { opacity: 0; transform: translateX(-80px) scale(0.95); }
  to { opacity: 1; transform: none; }
}
.viewer-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  max-width: 90vw;
  max-height: 85vh;
  overflow: auto;
  padding: 2rem 2.5rem 1.5rem 2.5rem;
  color: var(--text);
  font-size: 1.05rem;
  position: relative;
}
.viewer-content pre {
  background: #161b22;
  color: #c9d1d9;
  border-radius: 6px;
  padding: 1em;
  overflow-x: auto;
  font-size: 1em;
  margin: 1em 0 0 0;
}
.viewer-content .close-btn {
  position: absolute;
  top: 1.2rem;
  right: 1.2rem;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.7rem;
  cursor: pointer;
  transition: color 0.2s;
}
.viewer-content .close-btn:hover {
  color: var(--accent);
}
@media (max-width: 900px) {
  .hero-content { flex-direction: column; align-items: center; gap: 2rem; }
  .about-extra, .portfolio-list { flex-direction: column; gap: 2rem; }
}
@media (max-width: 700px) {
  header, main, .repo-list {
    padding-left: 0.5rem;
    padding-right: 0.5rem;
  }
  .viewer-content {
    padding: 1rem 0.5rem 1rem 0.5rem;
  }
  .hero-content { flex-direction: column; gap: 1.5rem; }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
 #github-anim {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.5s;
}
#github-anim .logo {
  width: 110px;
  height: 110px;
  animation: bounce 1.2s cubic-bezier(.68,-0.55,.27,1.55) 1;
}
@keyframes bounce {
  0% { transform: scale(0.7) translateY(0); }
  60% { transform: scale(1.1) translateY(-60px); }
  80% { transform: scale(0.95) translateY(10px); }
  100% { transform: scale(1) translateY(0); }
}

 .hero {
  background: linear-gradient(120deg, #161b22 60%, #21262d 100%);
  border-bottom: 1px solid var(--border);
  padding: 3.5rem 2rem 2.5rem 2rem;
  margin-bottom: 2.5rem;
  box-shadow: 0 8px 32px #0002;
}
.hero-content {
  display: flex;
  align-items: center;
  gap: 3.5rem;
  max-width: 1100px;
  margin: 0 auto;
}
.hero-avatar {
  object-fit: cover;
  transition: box-shadow 0.3s, border 0.3s, transform 0.3s;
  animation: avatarPop 1.2s cubic-bezier(.68,-0.55,.27,1.55);
}
@keyframes avatarPop {
  0% { transform: scale(0.7); opacity: 0; }
  60% { transform: scale(1.1); opacity: 1; }
  80% { transform: scale(0.95); }
  100% { transform: scale(1); }
}
.active-section {
  animation: fadeIn 0.38s cubic-bezier(.68,-0.55,.27,1.55);
}
.hero-content h1 {
  font-size: 2.5rem;
  margin: 0 0 0.3em 0;
  color: var(--accent);
}
.hero-content h2 {
  font-size: 1.3rem;
  color: var(--text-secondary);
  margin: 0 0 1em 0;
}
.hero-content p {
  font-size: 1.1rem;
  margin-bottom: 1.2em;
}
.hero-links {
  display: flex;
  gap: 1.2em;
}
.hero-links a {
  background: var(--accent);
  color: #fff;
  border-radius: 5px;
  padding: 0.5em 1.3em;
  text-decoration: none;
  font-weight: 500;
  font-size: 1.1rem;
  transition: background 0.2s;
}
.hero-links a:hover {
  background: var(--accent-hover);
}

.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  margin: 2.5rem 0 1.5rem 0;
  text-align: center;
  letter-spacing: 0.01em;
}

.about-extra {
  display: flex;
  gap: 3.5rem;
  justify-content: center;
  margin: 2.5rem 0 0 0;
}
.about-extra h3 {
  color: var(--accent);
  margin-bottom: 0.7em;
}
.about-extra ul {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin: 0 0 0 1.2em;
}

.portfolio-list {
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
  justify-content: center;
  margin: 2.5rem 0 0 0;
}
.portfolio-card {
  background: linear-gradient(120deg, #161b22 60%, #21262d 100%);
  border: 2px solid var(--accent);
  border-radius: 16px;
  box-shadow: 0 8px 32px #23863622;
  padding: 2rem 2.2rem 1.5rem 2.2rem;
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  min-width: 320px;
  max-width: 420px;
  transition: transform 0.15s, box-shadow 0.15s;
  position: relative;
  animation: fadeIn 0.7s cubic-bezier(.68,-0.55,.27,1.55);
}
.portfolio-card:hover {
  transform: translateY(-4px) scale(1.03);
  box-shadow: 0 8px 32px #23863655;
  border-color: var(--accent-hover);
}
.portfolio-icon {
  width: 3.2em;
  height: 3.2em;
  margin-top: 0.2em;
  flex-shrink: 0;
}
.portfolio-card h3 {
  margin: 0 0 0.5em 0;
  color: var(--accent);
}
.portfolio-card p {
  color: var(--text-secondary);
  margin: 0 0 0.7em 0;
}
.portfolio-card a {
  color: var(--accent);
  text-decoration: underline;
  font-weight: 500;
}
.portfolio-card a:hover {
  color: var(--accent-hover);
}
.contacts-list {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  justify-content: center;
  margin: 2.5rem 0 0 0;
}
.contact-banner {
  background: linear-gradient(120deg, #21262d 60%, #23863622 100%);
  border: 2px solid var(--accent);
  border-radius: 16px;
  box-shadow: 0 8px 32px #23863622;
  padding: 2rem 2.2rem 1.5rem 2.2rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  min-width: 260px;
  max-width: 420px;
  transition: transform 0.15s, box-shadow 0.15s;
  animation: fadeIn 0.7s cubic-bezier(.68,-0.55,.27,1.55);
}
.contact-banner:hover {
  transform: scale(1.03) rotate(-1deg);
  box-shadow: 0 8px 32px #23863655;
  border-color: var(--accent-hover);
}
.contact-icon {
  width: 3em;
  height: 3em;
  border-radius: 50%;
  background: #fff1;
  box-shadow: 0 2px 8px #23863633;
  display: flex;
  align-items: center;
  justify-content: center;
}
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 0.5em;
}
.contact-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent);
}
.contact-link {
  color: var(--accent);
  font-size: 1.1rem;
  text-decoration: underline;
  font-weight: 500;
  word-break: break-all;
}
.contact-link:hover {
  color: var(--accent-hover);
}
.contact-desc {
  color: var(--text-secondary);
  font-size: 1rem;
}
.footer-content {
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  flex-wrap: wrap;
  font-size: 1.05rem;
  align-items: center;
}
.footer-content a {
  color: var(--accent);
  text-decoration: underline;
}
.footer-content a:hover {
  color: var(--accent-hover);
}
.main-header {
  background: linear-gradient(90deg, #161b22 60%, #21262d 100%);
  border-bottom: 2px solid var(--accent);
  padding: 0.7rem 2vw;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 16px #23863622;
}
.header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.site-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.04em;
}
#hints-btn {
  background: var(--accent);
  border: none;
  border-radius: 50%;
  width: 2.7em;
  height: 2.7em;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 2px 8px #23863633;
  transition: background 0.2s, transform 0.2s;
  margin-left: 1.5em;
}
#hints-btn:hover {
  background: var(--accent-hover);
  transform: scale(1.08) rotate(-8deg);
}
.hints-modal {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(13,17,23,0.98);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.3s;
}
.hints-content {
  background: var(--bg-secondary);
  border: 2px solid var(--accent);
  border-radius: 16px;
  box-shadow: 0 8px 40px #23863655;
  padding: 2.5rem 3rem 2rem 3rem;
  color: var(--text);
  max-width: 480px;
  width: 95vw;
  position: relative;
  animation: fileViewerSlideIn 0.38s cubic-bezier(.68,-0.55,.27,1.55);
}
.hints-content h2 {
  color: var(--accent);
  margin-bottom: 1.2em;
  text-align: center;
}
.hints-content ul {
  font-size: 1.1rem;
  color: var(--text-secondary);
  padding-left: 1.2em;
}
.hints-content .close-btn {
  position: absolute;
  top: 1.2rem;
  right: 1.2rem;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.7rem;
  cursor: pointer;
  transition: color 0.2s;
}
.hints-content .close-btn:hover {
  color: var(--accent);
}
.avatar-modal {
  position: fixed;
  inset: 0;
  background: rgba(13,17,23,0.97);
  z-index: 9998;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.2s;
}
.avatar-modal-content {
  background: var(--bg-secondary);
  border: 2px solid var(--accent);
  border-radius: 16px;
  box-shadow: 0 8px 40px #23863655;
  padding: 2.5rem 2.5rem 2rem 2.5rem;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.avatar-modal-content .close-btn {
  position: absolute;
  top: 1.2rem;
  right: 1.2rem;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.7rem;
  cursor: pointer;
  transition: color 0.2s;
}
.avatar-modal-content .close-btn:hover {
  color: var(--accent);
}
.hero-avatar-wrap {
  position: relative;
  cursor: pointer;
  display: inline-block;
  transition: transform 0.2s;
}
.hero-avatar-wrap:hover {
  transform: scale(1.05) rotate(-2deg);
  box-shadow: 0 4px 24px #23863644;
}
.avatar-zoom-hint {
  position: absolute;
  bottom: 0.2em;
  right: 0.2em;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  font-size: 1.1em;
  padding: 0.2em 0.4em;
  opacity: 0.85;
  pointer-events: none;
  box-shadow: 0 2px 8px #23863633;
}
.hero-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  border: 4px solid var(--accent);
  box-shadow: 0 2px 16px #23863633;
  object-fit: cover;
  background: #fff1;
  transition: box-shadow 0.3s, border 0.3s, transform 0.3s;
  animation: avatarPop 1.2s cubic-bezier(.68,-0.55,.27,1.55);
}
.download-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 0.5em 1.3em;
  font-size: 1.1rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
  margin-left: 0.7em;
  display: flex;
  align-items: center;
  gap: 0.5em;
}
.download-btn:hover {
  background: var(--accent-hover);
  transform: scale(1.05);
}
.about-banner {
  display: flex;
  gap: 2.5rem;
  align-items: center;
  justify-content: center;
  background: linear-gradient(120deg, #21262d 60%, #23863622 100%);
  border-radius: 18px;
  box-shadow: 0 8px 32px #23863622;
  padding: 2.5rem 2rem 2.5rem 2rem;
  margin: 2.5rem auto 2rem auto;
  max-width: 900px;
  flex-wrap: wrap;
  animation: fadeIn 0.7s cubic-bezier(.68,-0.55,.27,1.55);
}
.about-avatar-anim img {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  border: 5px solid var(--accent);
  box-shadow: 0 2px 24px #23863633;
  object-fit: cover;
  background: #fff1;
  animation: avatarPop 1.2s cubic-bezier(.68,-0.55,.27,1.55);
}
.about-main-info {
  display: flex;
  flex-direction: column;
  gap: 0.7em;
  min-width: 220px;
}
.about-main-info h2 {
  font-size: 2.1rem;
  color: var(--accent);
  margin: 0 0 0.2em 0;
}
.about-location {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 0.5em;
}
.about-bio {
  color: var(--text);
  font-size: 1.15rem;
  margin-bottom: 0.7em;
}
.about-stats {
  display: flex;
  gap: 1.5em;
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 0.7em;
}
.about-langs {
  color: var(--accent);
  font-size: 1.1rem;
  margin-bottom: 0.7em;
}
.about-extra {
  display: flex;
  gap: 3.5rem;
  justify-content: center;
  margin: 2.5rem 0 0 0;
  flex-wrap: wrap;
}
.about-extra h3 {
  color: var(--accent);
  margin-bottom: 0.7em;
}
.about-extra ul {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin: 0 0 0 1.2em;
}
.portfolio-list {
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
  justify-content: center;
  margin: 2.5rem 0 0 0;
}
.portfolio-card {
  background: linear-gradient(120deg, #161b22 60%, #21262d 100%);
  border: 2px solid var(--accent);
  border-radius: 16px;
  box-shadow: 0 8px 32px #23863622;
  padding: 2rem 2.2rem 1.5rem 2.2rem;
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  min-width: 320px;
  max-width: 420px;
  transition: transform 0.15s, box-shadow 0.15s;
  position: relative;
  animation: fadeIn 0.7s cubic-bezier(.68,-0.55,.27,1.55);
}
.portfolio-card:hover {
  transform: translateY(-4px) scale(1.03);
  box-shadow: 0 8px 32px #23863655;
  border-color: var(--accent-hover);
}
.portfolio-icon {
  width: 3.2em;
  height: 3.2em;
  margin-top: 0.2em;
  flex-shrink: 0;
}
.portfolio-card h3 {
  margin: 0 0 0.5em 0;
  color: var(--accent);
}
.portfolio-card p {
  color: var(--text-secondary);
  margin: 0 0 0.7em 0;
}
.portfolio-card a {
  color: var(--accent);
  text-decoration: underline;
  font-weight: 500;
}
.portfolio-card a:hover {
  color: var(--accent-hover);
}
.contacts-list {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  justify-content: center;
  margin: 2.5rem 0 0 0;
}
.contact-banner {
  background: linear-gradient(120deg, #21262d 60%, #23863622 100%);
  border: 2px solid var(--accent);
  border-radius: 16px;
  box-shadow: 0 8px 32px #23863622;
  padding: 2rem 2.2rem 1.5rem 2.2rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  min-width: 260px;
  max-width: 420px;
  transition: transform 0.15s, box-shadow 0.15s;
  animation: fadeIn 0.7s cubic-bezier(.68,-0.55,.27,1.55);
}
.contact-banner:hover {
  transform: scale(1.03) rotate(-1deg);
  box-shadow: 0 8px 32px #23863655;
  border-color: var(--accent-hover);
}
.contact-icon {
  width: 3em;
  height: 3em;
  border-radius: 50%;
  background: #fff1;
  box-shadow: 0 2px 8px #23863633;
  display: flex;
  align-items: center;
  justify-content: center;
}
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 0.5em;
}
.contact-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent);
}
.contact-link {
  color: var(--accent);
  font-size: 1.1rem;
  text-decoration: underline;
  font-weight: 500;
  word-break: break-all;
}
.contact-link:hover {
  color: var(--accent-hover);
}
.contact-desc {
  color: var(--text-secondary);
  font-size: 1rem;
}
.footer-content {
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  flex-wrap: wrap;
  font-size: 1.05rem;
  align-items: center;
}
.footer-content a {
  color: var(--accent);
  text-decoration: underline;
}
.footer-content a:hover {
  color: var(--accent-hover);
}
@media (max-width: 900px) {
  .hero-content, .about-banner, .about-extra, .portfolio-list, .contacts-list {
    flex-direction: column;
    gap: 2rem;
    align-items: center;
  }
  .main-header {
    flex-direction: column;
    gap: 1rem;
    padding: 0.7rem 1vw;
  }
}
@media (max-width: 700px) {
  header, main, .repo-list {
    padding-left: 0.5rem;
    padding-right: 0.5rem;
  }
  .viewer-content, .hints-content, .avatar-modal-content {
    padding: 1rem 0.5rem 1rem 0.5rem;
  }
  .hero-content, .about-banner, .about-extra, .portfolio-list, .contacts-list {
    flex-direction: column;
    gap: 1.5rem;
  }
  .portfolio-card, .contact-banner {
    min-width: 90vw;
    max-width: 98vw;
    padding: 1.2rem 0.7rem 1rem 0.7rem;
  }
}
.file-list .file-item .preview-btn img {
  width: 1.2em;
  height: 1.2em;
  filter: drop-shadow(0 0 2px #23863688);
  margin-left: 0.3em;
}
.file-list .file-item .preview-btn {
  margin-left: auto;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0 0.2em;
  display: flex;
  align-items: center;
  opacity: 0.7;
  transition: opacity 0.2s, filter 0.2s;
}
.file-list .file-item .preview-btn:hover {
  opacity: 1;
  filter: drop-shadow(0 0 4px #238636cc);
}