/* ============================================
   NAMITA ACHYUTHAN — PERSONAL SITE
   Palette: nebula purples
   ============================================ */

:root {
  --void: #0d0015;
  --deep: #1a0527;
  --surface: #2a0d3a;
  --border: #3b0944;
  --accent: #8b3a93;
  --glow: #c07cc0;
  --text: #e8c4db;
  --bright: #f0dce8;
  --white: #faf0f5;

  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
  scroll-behavior: smooth;
  scrollbar-color: var(--border) var(--void);
}

body {
  background: var(--void);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--accent);
  color: var(--white);
}

a {
  color: var(--glow);
  text-decoration: none;
  transition: color 0.2s;
}
a:hover { color: var(--white); }

/* ---- HEADER (compact) ---- */

.header {
  display: block;
  padding: 2.5rem 2.5rem 2rem;
  border-bottom: 1px solid var(--border);
  max-width: 1100px;
  margin: 0 auto;
}

.header-left {
  flex: 1;
  min-width: 280px;
}

.header-name {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 0.3rem;
  letter-spacing: -0.02em;
}

.header-tagline {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--glow);
  letter-spacing: 0.06em;
  margin-bottom: 0.7rem;
}

.header-bio {
  font-size: 0.9rem;
  color: var(--text);
  line-height: 1.6;
  opacity: 0.85;
}

.header-icons {
  display: flex;
  gap: 0.8rem;
  align-items: center;
  margin-top: 0.8rem;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border);
  color: var(--text);
  transition: all 0.3s var(--ease-out);
}
.social-link svg {
  width: 16px;
  height: 16px;
}
.social-link:hover {
  color: var(--white);
  border-color: var(--glow);
  background: rgba(139, 58, 147, 0.15);
  box-shadow: 0 0 20px rgba(139, 58, 147, 0.2);
  transform: translateY(-2px);
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---- GLANCE ---- */

.glance {
  padding: 1.5rem 2.5rem 0;
  max-width: 1100px;
  margin: 0 auto;
}

.glance-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.8rem;
}

.glance-card {
  padding: 1rem 1.2rem;
  background: rgba(42, 13, 58, 0.25);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.25s var(--ease-out);
}
.glance-card:hover {
  border-color: var(--accent);
  background: rgba(42, 13, 58, 0.5);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(139, 58, 147, 0.12);
}

.glance-label {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.4rem;
}

.glance-icon {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  opacity: 0.8;
}

.glance-card p {
  font-size: 0.85rem;
  color: var(--text);
  line-height: 1.5;
  margin: 0;
}
.glance-card p + p {
  margin-top: 0.25rem;
}
.glance-card strong {
  color: var(--white);
  font-weight: 500;
}

@media (max-width: 640px) {
  .glance { padding: 1rem 1.2rem 0; }
  .glance-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 420px) {
  .glance-grid { grid-template-columns: 1fr; }
}

/* ---- SECTIONS (shared) ---- */

.section-title {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: -0.01em;
  margin-bottom: 2rem;
  position: relative;
  display: inline-block;
}
.section-title::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--accent);
}

/* ---- NEWS ---- */

.news {
  padding: 4rem 2.5rem 5rem;
  max-width: 800px;
}

.news-list {
  list-style: none;
}

.news-item {
  display: flex;
  gap: 1.5rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid rgba(59, 9, 68, 0.5);
  align-items: baseline;
}
.news-item:last-child { border-bottom: none; }

.news-date {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent);
  white-space: nowrap;
  min-width: 90px;
  letter-spacing: 0.02em;
}

.news-text {
  font-size: 0.95rem;
  color: var(--text);
}

/* ---- WORK / TABS ---- */

.work {
  padding: 1.5rem 2.5rem 4rem;
  max-width: 1100px;
  margin: 0 auto;
}

.tabs {
  display: flex;
  gap: 0.25rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0;
}

.tab {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 400;
  color: var(--text);
  background: none;
  border: none;
  padding: 0.7rem 1.1rem;
  cursor: pointer;
  position: relative;
  letter-spacing: 0.02em;
  text-transform: lowercase;
  transition: color 0.2s;
  opacity: 0.6;
}
.tab::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--glow);
  transform: scaleX(0);
  transition: transform 0.3s var(--ease-out);
}
.tab:hover {
  color: var(--glow);
  opacity: 1;
}
.tab.active {
  color: var(--white);
  opacity: 1;
}
.tab.active::after {
  transform: scaleX(1);
}

/* Tab panels */
.tab-panel {
  display: none;
  animation: panelIn 0.4s var(--ease-out);
}
.tab-panel.active { display: block; }

@keyframes panelIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---- BLOG TAB ---- */

.blog-posts {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.blog-post {
  display: block;
  padding: 1.3rem 1.4rem;
  background: rgba(42, 13, 58, 0.4);
  border-left: 2px solid transparent;
  transition: all 0.25s var(--ease-out);
}
.blog-post:hover {
  background: rgba(42, 13, 58, 0.7);
  border-left-color: var(--glow);
  transform: translateX(4px);
}

.blog-post-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--white);
  margin-bottom: 0.3rem;
}
.blog-post:hover .blog-post-title { color: var(--glow); }

.blog-post-date {
  font-size: 0.78rem;
  color: var(--accent);
  margin-bottom: 0.4rem;
}

.blog-post-excerpt {
  font-size: 0.88rem;
  color: var(--text);
  opacity: 0.8;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.substack-link {
  display: inline-block;
  margin-top: 1.5rem;
  font-family: var(--font-display);
  font-size: 0.9rem;
  color: var(--glow);
  letter-spacing: 0.02em;
}
.substack-link:hover { color: var(--white); }

.loading-text, .placeholder-text {
  color: var(--accent);
  font-size: 0.9rem;
  font-style: italic;
  opacity: 0.7;
}

.slow-fallback {
  display: none;
  font-size: 0.85rem;
  color: var(--accent);
  opacity: 0.6;
  margin-top: 0.8rem;
}

/* ---- PUBLICATIONS ---- */

.pub-list { list-style: none; }

.pub-item {
  padding: 1.3rem 0;
  border-bottom: 1px solid rgba(59, 9, 68, 0.4);
}
.pub-item:last-child { border-bottom: none; }

.pub-title {
  display: block;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  color: var(--white);
  margin-bottom: 0.25rem;
}

.pub-title-link {
  text-decoration: none;
  transition: color 0.2s;
}
.pub-title-link:hover {
  color: var(--glow);
}

.pub-pending {
  position: relative;
}
.pub-pending .pub-title {
  cursor: default;
}
.pub-pending::after {
  content: attr(title);
  position: absolute;
  top: 0.8rem;
  right: 0;
  font-family: var(--font-display);
  font-size: 0.68rem;
  color: var(--accent);
  opacity: 0;
  transition: opacity 0.2s;
  letter-spacing: 0.03em;
  font-style: italic;
}
.pub-pending:hover::after {
  opacity: 0.7;
}

.pub-meta {
  display: block;
  font-size: 0.8rem;
  color: var(--accent);
  margin-bottom: 0.3rem;
}

.pub-authors {
  display: block;
  font-size: 0.85rem;
  color: var(--text);
  opacity: 0.7;
  margin-bottom: 0.5rem;
}

.pub-links {
  display: flex;
  gap: 1rem;
}
.pub-links a {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--glow);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 3px;
  transition: all 0.2s;
}
.pub-links a:hover {
  border-color: var(--glow);
  background: rgba(139, 58, 147, 0.15);
  color: var(--white);
}

/* ---- PROJECTS ---- */

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.project-card {
  padding: 1.5rem;
  background: rgba(42, 13, 58, 0.3);
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: all 0.3s var(--ease-out);
}
.project-card:hover {
  border-color: var(--accent);
  background: rgba(42, 13, 58, 0.5);
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(139, 58, 147, 0.1);
}

.project-name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 0.5rem;
}

.project-desc {
  font-size: 0.88rem;
  color: var(--text);
  margin-bottom: 0.8rem;
  opacity: 0.8;
}

.project-tags, .skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.8rem;
}

.tag {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--glow);
  padding: 0.2rem 0.55rem;
  border: 1px solid rgba(139, 58, 147, 0.3);
  border-radius: 3px;
  letter-spacing: 0.03em;
}

.project-links {
  display: flex;
  gap: 1rem;
}
.project-links a {
  font-family: var(--font-display);
  font-size: 0.8rem;
  color: var(--glow);
}

/* ---- SKILLS ---- */

.skills-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 3rem;
}

.skill-row {
  display: flex;
  flex-direction: column;
  padding: 0.9rem 0;
  border-bottom: 1px solid rgba(59, 9, 68, 0.4);
}
.skill-row:last-child { border-bottom: none; }

.skill-label {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.35rem;
}

.skill-value {
  font-size: 0.9rem;
  color: var(--text);
  line-height: 1.5;
}

@media (max-width: 640px) {
  .skills-columns { grid-template-columns: 1fr; }
}

/* ---- EXPERIENCE / TIMELINE ---- */

.experience-section {
  margin-bottom: 3rem;
}
.experience-section:last-child { margin-bottom: 0; }

.subsection-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--glow);
  margin-bottom: 1.5rem;
  text-transform: lowercase;
  letter-spacing: 0.04em;
}

.timeline {
  position: relative;
  padding-left: 2rem;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent), var(--border));
}

.timeline-item {
  position: relative;
  padding-bottom: 2rem;
}
.timeline-item:last-child { padding-bottom: 0; }

.timeline-marker {
  position: absolute;
  left: -2rem;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--void);
  transform: translateX(-4px);
}

.timeline-date {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--accent);
  letter-spacing: 0.03em;
}

.timeline-role {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  margin: 0.15rem 0;
}

.timeline-org {
  font-size: 0.88rem;
  color: var(--glow);
  display: block;
  margin-bottom: 0.3rem;
}

.timeline-desc {
  font-size: 0.88rem;
  color: var(--text);
  opacity: 0.8;
}

/* ---- RESEARCH ---- */

.research-intro {
  font-size: 0.9rem;
  color: var(--text);
  opacity: 0.7;
  margin-bottom: 2rem;
}

.research-area {
  margin-bottom: 2rem;
}
.research-area:last-child { margin-bottom: 0; }

.research-heading {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  color: var(--white);
  margin-bottom: 0.5rem;
}

.research-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--accent);
  opacity: 0.7;
}

.research-area p {
  font-size: 0.9rem;
  color: var(--text);
  opacity: 0.85;
  line-height: 1.7;
}

/* ---- PUBLICATIONS (extra) ---- */

.pub-badge {
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border: 1px solid rgba(139, 58, 147, 0.3);
  border-radius: 3px;
  padding: 0.1rem 0.4rem;
  margin-left: 0.5rem;
  vertical-align: middle;
}

.pub-meta a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: rgba(139, 58, 147, 0.4);
  text-underline-offset: 2px;
  transition: color 0.2s, text-decoration-color 0.2s;
}
.pub-meta a:hover {
  color: var(--glow);
  text-decoration-color: var(--glow);
}

.pub-desc {
  font-size: 0.85rem;
  color: var(--text);
  opacity: 0.7;
  margin-bottom: 0.5rem;
  line-height: 1.6;
}

.conference-key {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(59, 9, 68, 0.4);
}
.conference-key-title {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}
.conference-key p:last-child {
  font-size: 0.8rem;
  color: var(--text);
  opacity: 0.6;
  line-height: 1.7;
}

/* ---- CERTIFICATIONS ---- */

.cert-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.cert-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(59, 9, 68, 0.3);
  flex-wrap: wrap;
  gap: 0.5rem;
}
.cert-item:last-child { border-bottom: none; }

.cert-name {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--white);
}

.cert-org {
  font-size: 0.8rem;
  color: var(--accent);
}

/* ---- NOTES ---- */

.notes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}

.note-card {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 1.2rem 1rem;
  background: rgba(42, 13, 58, 0.3);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--white);
  transition: all 0.3s var(--ease-out);
}
.note-card:hover {
  border-color: var(--accent);
  background: rgba(42, 13, 58, 0.5);
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(139, 58, 147, 0.1);
  color: var(--glow);
}

/* ---- BEYOND WORK ---- */

.beyond-content {
  font-size: 0.95rem;
  line-height: 1.7;
}

.beyond-section {
  margin-bottom: 2rem;
}

.beyond-heading {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--glow);
  letter-spacing: 0.06em;
  margin-bottom: 0.5rem;
}

/* ---- FOOTER ---- */

footer {
  padding: 4rem 2.5rem 3rem;
  border-top: 1px solid var(--border);
  max-width: 1100px;
  margin: 0 auto;
}

.footer-content {
  max-width: 100%;
}

.footer-text {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 500;
  color: var(--white);
  margin-bottom: 1rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2rem;
}
.footer-links a {
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--text);
  text-transform: lowercase;
  letter-spacing: 0.03em;
}
.footer-links a:hover { color: var(--glow); }

.footer-copy {
  font-size: 0.75rem;
  color: var(--border);
  letter-spacing: 0.02em;
}

/* ---- MOBILE ---- */

@media (max-width: 640px) {
  .header {
    padding: 1.5rem 1.2rem 1.2rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
  .header-name { font-size: 1.6rem; }

  .news { padding: 2rem 1.2rem 3rem; }
  .news-item {
    flex-direction: column;
    gap: 0.2rem;
  }

  .work { padding: 1rem 1.2rem 4rem; }
  .tabs { gap: 0; }
  .tab { padding: 0.6rem 0.7rem; font-size: 0.75rem; }

  .project-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr; }

  footer { padding: 3rem 1.2rem 2rem; }
  .footer-links { flex-wrap: wrap; gap: 1rem; }
}