/* ============================================================
   TOKENS & RESET
   ============================================================ */
:root {
  --bg:           #0a0a0a;
  --bg-alt:       #0d0d0d;
  --bg-card:      #111;
  --border:       #1f1f1f;
  --border-hover: #2e2e2e;

  --accent:     #9d80f5;
  --accent-dim: rgba(157, 128, 245, 0.1);

  --text:   #ededed;
  --text-2: #888;
  --text-3: #555;

  --font-sans: 'Inter', system-ui, sans-serif;
  --font-mono: 'Fira Code', monospace;

  --radius: 6px;
  --max-w:  820px;
  --trans:  0.18s ease;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.7;
  overflow-x: hidden;
}

img { max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ============================================================
   REVEAL
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ============================================================
   GLASS CARD → CLEAN CARD
   ============================================================ */
.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  transition: border-color var(--trans);
}
.glass-card:hover {
  background: var(--bg-card);
  border-color: var(--border-hover);
  transform: none;
  box-shadow: none;
}

/* GRADIENT TEXT → ACCENT */
.gradient-text {
  background: none;
  -webkit-background-clip: unset;
  -webkit-text-fill-color: unset;
  background-clip: unset;
  color: var(--accent);
}

/* ============================================================
   CONTAINER & SECTIONS
   ============================================================ */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 88px 0;
  position: relative;
  border-top: 1px solid var(--border);
}

section::before { display: none; }

.section-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 8px;
}

.section-heading {
  font-size: clamp(1.5rem, 3.5vw, 2.2rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 48px;
  letter-spacing: -0.025em;
  font-family: var(--font-sans);
}

.section-heading.center { text-align: center; }

/* ============================================================
   NAVIGATION
   ============================================================ */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 18px 0;
  transition: background var(--trans), border-color var(--trans), padding var(--trans);
}

#navbar.scrolled {
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 13px 0;
}

.nav-container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  font-weight: 500;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0;
}

.brand-dot { display: none; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-link {
  padding: 6px 12px;
  border-radius: var(--radius);
  font-size: 0.83rem;
  color: var(--text-2);
  font-weight: 400;
  transition: color var(--trans);
  background: none;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text);
  background: none;
}

.nav-link.btn-nav {
  color: var(--accent);
  border: 1px solid var(--border);
  margin-left: 8px;
  font-weight: 500;
}

.nav-link.btn-nav:hover {
  border-color: var(--accent);
  background: var(--accent-dim);
  transform: none;
  box-shadow: none;
  opacity: 1;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px; height: 1.5px;
  background: var(--text-2);
  border-radius: 2px;
  transition: var(--trans);
}

/* ============================================================
   HERO
   ============================================================ */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 24px 80px;
  border-top: none;
}

#particle-canvas { display: none; }

.hero-content {
  max-width: var(--max-w);
  margin: 0 auto;
  width: 100%;
  position: relative;
  z-index: 1;
}

/* Hide old hero elements */
.hero-badge,
.hero-stats,
.hero-title-wrap,
.hero-scroll-hint,
.cursor-blink { display: none; }

/* New hero elements */
.hero-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--text-3);
  text-transform: uppercase;
  margin-bottom: 36px;
}

.status-dot {
  width: 6px; height: 6px;
  background: #4ade80;
  border-radius: 50%;
  animation: blink-dot 2.5s ease infinite;
  flex-shrink: 0;
}

@keyframes blink-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero-name {
  font-family: var(--font-sans);
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--text);
  margin-bottom: 14px;
  background: none;
  -webkit-background-clip: unset;
  -webkit-text-fill-color: unset;
  background-clip: unset;
}

.hero-role {
  font-size: 1rem;
  color: var(--text-2);
  margin-bottom: 28px;
  font-weight: 400;
}

.hero-desc {
  font-size: clamp(0.95rem, 1.8vw, 1.05rem);
  color: var(--text-2);
  max-width: 560px;
  line-height: 1.8;
  margin: 0 0 44px;
}

.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  padding: 10px 24px;
  border-radius: var(--radius);
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all var(--trans);
}

.btn-primary {
  background: var(--text);
  color: var(--bg);
}

.btn-primary:hover {
  background: #d4d4d4;
  transform: none;
  box-shadow: none;
}

.btn-ghost {
  background: transparent;
  color: var(--text-2);
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.btn-ghost:hover {
  color: var(--text);
  border-color: var(--border-hover);
  background: transparent;
  transform: none;
}

/* ============================================================
   ABOUT
   ============================================================ */
#about { background: none; }

.about-grid {
  grid-template-columns: 1fr;
  gap: 0;
}

.about-card-wrap { display: none !important; }

.about-text p {
  color: var(--text-2);
  margin-bottom: 18px;
  font-size: 0.97rem;
  line-height: 1.8;
}

.about-text .section-heading { margin-bottom: 20px; }

.about-highlights {
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.highlight-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 11px 16px;
  border-radius: var(--radius);
  font-size: 0.88rem;
  color: var(--text-2);
}

.highlight-icon { display: none !important; }
.highlight-item strong { color: var(--text); }

/* ============================================================
   EXPERIENCE / TIMELINE
   ============================================================ */
#experience { background: var(--bg-alt); }

.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding-left: 28px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 0; bottom: 0;
  width: 1px;
  background: var(--border);
}

.timeline-item {
  position: relative;
  margin-bottom: 18px;
}

.timeline-dot {
  position: absolute;
  left: -25px;
  top: 22px;
  width: 8px; height: 8px;
  background: var(--text-3);
  border-radius: 50%;
  border: 2px solid var(--bg-alt);
}

.timeline-dot.glow {
  background: var(--accent);
  border-color: var(--bg-alt);
  box-shadow: none;
  animation: none;
}

.timeline-dot.glow-secondary {
  background: var(--text-2);
  box-shadow: none;
}

.timeline-content {
  padding: 22px 24px;
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
}

.company-logo-wrap { margin-bottom: 6px; }

.company-logo {
  height: 20px;
  width: auto;
  object-fit: contain;
  filter: brightness(0) invert(0.4);
  transition: filter var(--trans);
}

.glass-card:hover .company-logo {
  filter: brightness(0) invert(0.7);
}

.timeline-header h3 {
  font-size: 0.97rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 3px;
  font-family: var(--font-sans);
}

.timeline-company {
  font-size: 0.76rem;
  color: var(--text-3);
  font-family: var(--font-mono);
  font-weight: 400;
}

.timeline-badge {
  padding: 2px 9px;
  background: rgba(74, 222, 128, 0.07);
  border: 1px solid rgba(74, 222, 128, 0.15);
  border-radius: 4px;
  font-size: 0.64rem;
  color: #4ade80;
  font-weight: 500;
  white-space: nowrap;
  font-family: var(--font-mono);
}

.timeline-badge.collab {
  background: var(--accent-dim);
  border-color: rgba(157, 128, 245, 0.2);
  color: var(--accent);
}

.timeline-bullets {
  list-style: none;
  margin-bottom: 14px;
}

.timeline-bullets li {
  position: relative;
  padding-left: 16px;
  color: var(--text-2);
  font-size: 0.86rem;
  margin-bottom: 6px;
  line-height: 1.6;
}

.timeline-bullets li::before {
  content: '–';
  position: absolute;
  left: 0;
  color: var(--text-3);
}

.timeline-skills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.skill-chip {
  padding: 2px 9px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.67rem;
  font-weight: 400;
  color: var(--text-3);
  font-family: var(--font-mono);
}

/* ============================================================
   PROJECTS
   ============================================================ */
#projects { background: none; }

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 14px;
}

.project-card {
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  cursor: default;
}

.project-icon { display: none !important; }

.project-meta { display: flex; gap: 8px; }

.project-tag {
  font-size: 0.66rem;
  font-family: var(--font-mono);
  color: var(--text-3);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.project-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
  font-family: var(--font-sans);
}

.project-card p {
  font-size: 0.85rem;
  color: var(--text-2);
  line-height: 1.65;
  flex: 1;
}

.project-achievements {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.achievement {
  padding: 2px 8px;
  background: var(--accent-dim);
  border: 1px solid rgba(157, 128, 245, 0.15);
  border-radius: 4px;
  font-size: 0.67rem;
  color: var(--accent);
  font-weight: 400;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}

.project-tech span {
  padding: 2px 8px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.66rem;
  color: var(--text-3);
  font-family: var(--font-mono);
}

/* ============================================================
   FOCUS AREAS
   ============================================================ */
#skills { background: var(--bg-alt); }

.focus-intro {
  text-align: center;
  color: var(--text-2);
  font-size: 0.92rem;
  max-width: 560px;
  margin: 0 auto 44px;
  line-height: 1.75;
}

.focus-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 14px;
}

.focus-card {
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
  overflow: hidden;
}

.focus-card::after { display: none; }
.focus-icon { display: none !important; }

.focus-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
  font-family: var(--font-sans);
}

.focus-card p {
  font-size: 0.85rem;
  color: var(--text-2);
  line-height: 1.75;
  flex: 1;
}

.focus-kw {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.focus-kw span {
  padding: 2px 8px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.66rem;
  color: var(--text-3);
  font-family: var(--font-mono);
  font-weight: 400;
}

/* ============================================================
   NEWS
   ============================================================ */
#news { background: none; }

.news-sub {
  text-align: center;
  color: var(--text-2);
  font-size: 0.9rem;
  margin-bottom: 40px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.news-feed {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 14px;
  max-width: 100%;
  margin: 0;
}

.news-card {
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
  overflow: hidden;
}

.news-card::before { display: none; }

.news-week {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  color: var(--text-3);
  text-transform: uppercase;
}

.news-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

.news-tag {
  padding: 1px 8px;
  border-radius: 4px;
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  font-family: var(--font-mono);
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid rgba(157, 128, 245, 0.15);
}

.tag-vla, .tag-world, .tag-llm, .tag-vlm,
.tag-humanoid, .tag-arm, .tag-leg {
  background: var(--accent-dim);
  border-color: rgba(157, 128, 245, 0.15);
  color: var(--accent);
}

.news-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.35;
  font-family: var(--font-sans);
}

.news-card p {
  font-size: 0.85rem;
  color: var(--text-2);
  line-height: 1.7;
  flex: 1;
}

.news-status {
  font-size: 0.7rem;
  color: var(--text-3);
  padding-top: 10px;
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
}

/* ============================================================
   PARTNERS
   ============================================================ */
#partners { background: var(--bg-alt); }

.partners-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
}

.partner-card {
  padding: 28px 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.partner-logo-wrap {
  width: 100%;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
}

.partner-logo {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  filter: brightness(0) invert(0.35);
  transition: filter var(--trans);
}

.glass-card:hover .partner-logo {
  filter: brightness(0) invert(0.75);
}

.partner-card h3 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  font-family: var(--font-sans);
}

.partner-card p {
  font-size: 0.82rem;
  color: var(--text-2);
  line-height: 1.5;
}

/* ============================================================
   CONTACT
   ============================================================ */
#contact { background: none; }

.contact-sub {
  text-align: center;
  color: var(--text-2);
  font-size: 0.92rem;
  margin-bottom: 40px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

.contact-grid {
  display: flex;
  justify-content: center;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 28px;
}

.contact-card:hover {
  border-color: var(--accent);
  transform: none;
}

.contact-icon { display: none !important; }

.contact-info {
  display: flex;
  flex-direction: column;
}

.contact-label {
  font-size: 0.66rem;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-family: var(--font-mono);
  margin-bottom: 3px;
}

.contact-value {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text);
  font-family: var(--font-mono);
}

.contact-card:hover .contact-value {
  color: var(--accent);
}

/* ============================================================
   FOOTER
   ============================================================ */
#footer {
  padding: 26px 0;
  border-top: 1px solid var(--border);
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-size: 0.78rem;
  color: var(--text-3);
  font-family: var(--font-mono);
  flex-wrap: wrap;
}

.footer-brand { color: var(--text-2); }
.footer-sep { color: var(--text-3); }

/* ============================================================
   HIDE UNUSED
   ============================================================ */
.project-icon, .focus-icon, .highlight-icon, .skill-cat-icon,
.skills-grid, .skill-category, .about-card-wrap, #about, #experience,
.badge-dot, .stat-item, .stat-divider { display: none !important; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 58px; left: 0; right: 0;
    flex-direction: column;
    background: rgba(10, 10, 10, 0.97);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 12px;
    gap: 2px;
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .nav-link.btn-nav { margin-left: 0; }

  .timeline { padding-left: 20px; }
  .timeline-dot { left: -17px; }
  .timeline-header { flex-direction: column; }
  .timeline-badge { align-self: flex-start; }

  .projects-grid { grid-template-columns: 1fr; }
  .focus-grid { grid-template-columns: 1fr; }
  .news-feed { grid-template-columns: 1fr; }
  .partners-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  section { padding: 60px 0; }
  .hero-cta { flex-direction: column; }
  .btn { width: 100%; justify-content: center; max-width: 280px; }
  .partners-grid { grid-template-columns: 1fr; }
}