/* ===== Variables ===== */
:root {
  --bg: #ffffff;
  --bg-alt: #f6f7fb;
  --ink: #111420;
  --ink-soft: #565f70;
  --ink-faint: #9aa1b0;
  --accent: #2f6fed;
  --accent-2: #7c3aed;
  --accent-soft: #eef2fe;
  --border: #e7e9f0;
  --radius: 16px;
  --font-display: "Space Grotesk", var(--font-sans);
  --font-sans: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", monospace;
  --max-width: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
}

/* Subtle dot-grid background behind the hero */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image: radial-gradient(circle, #dde2f0 1px, transparent 1px);
  background-size: 26px 26px;
  mask-image: radial-gradient(ellipse 70% 55% at 50% 0%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 55% at 50% 0%, #000 30%, transparent 75%);
}

/* ===== Reveal-on-scroll ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.in-view { opacity: 1; transform: translateY(0); }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}
.logo span { color: var(--accent); }

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 0.94rem;
  font-weight: 500;
  color: var(--ink-soft);
}
.nav a:hover { color: var(--ink); }
.nav-cta {
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--ink);
  color: #fff !important;
}
.nav-cta:hover { background: var(--accent); }

.header-actions { display: flex; align-items: center; gap: 12px; }

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 10px;
  cursor: pointer;
  color: var(--ink-faint);
}
.lang-option { padding: 1px 3px; transition: color 0.15s ease; }
.lang-option.active { color: var(--accent); font-weight: 700; }
.lang-sep { color: var(--border); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
}

/* ===== Hero ===== */
.hero { padding: 88px 0 0; position: relative; }
.hero-inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: center;
  padding-bottom: 64px;
}
.eyebrow {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0 0 16px;
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 5.4vw, 4.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin: 0 0 22px;
  display: flex;
  flex-direction: column;
}
.gradient-text {
  background: linear-gradient(100deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-lede {
  font-size: 1.12rem;
  color: var(--ink-soft);
  max-width: 48ch;
  margin: 0 0 34px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  padding: 13px 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: linear-gradient(100deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 8px 20px rgba(47, 111, 237, 0.25);
}
.btn-primary:hover { box-shadow: 0 12px 26px rgba(47, 111, 237, 0.35); }
.btn-secondary {
  background: #fff;
  color: var(--ink);
  border-color: var(--border);
}
.btn-secondary:hover { border-color: var(--ink); }

.hero-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 0.88rem;
  color: var(--ink-soft);
}
.hero-links a:hover { color: var(--accent); }

.hero-photo { display: flex; justify-content: center; position: relative; }
.photo-blob {
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 42% 58% 63% 37% / 41% 44% 56% 59%;
  background: linear-gradient(135deg, var(--accent-soft), #f3e8ff);
  z-index: -1;
  animation: blobMove 9s ease-in-out infinite;
}
@keyframes blobMove {
  0%, 100% { border-radius: 42% 58% 63% 37% / 41% 44% 56% 59%; }
  50% { border-radius: 60% 40% 44% 56% / 55% 40% 60% 45%; }
}
.photo-frame {
  position: relative;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--accent-soft);
  border: 4px solid #fff;
  box-shadow: 0 20px 40px rgba(17, 20, 32, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
}
.photo-frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.photo-fallback {
  display: none;
  font-family: var(--font-display);
  font-size: 3.2rem;
  font-weight: 700;
  color: var(--accent);
}
.photo-frame.no-photo img { display: none; }
.photo-frame.no-photo .photo-fallback { display: block; }

/* Stats bar */
.stats-bar {
  background: var(--ink);
  color: #fff;
}
.stats-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 34px 24px;
}
.stat { text-align: center; }
.stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 2.1rem;
  font-weight: 700;
  background: linear-gradient(100deg, #7fa8ff, #c9a4ff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat-label {
  font-size: 0.8rem;
  color: #b7bccb;
}

/* Marquee */
.marquee {
  overflow: hidden;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}
.marquee-track {
  display: flex;
  gap: 40px;
  width: max-content;
  animation: marqueeScroll 24s linear infinite;
}
.marquee-track span {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink-faint);
  white-space: nowrap;
}
@keyframes marqueeScroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ===== Sections ===== */
.section { padding: 96px 0; }
.section-alt { background: var(--bg-alt); }
.section-label {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0 0 10px;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.4vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
}
.section-intro {
  color: var(--ink-soft);
  max-width: 62ch;
  margin: 0 0 40px;
}

/* About */
.about-text {
  max-width: 74ch;
  color: var(--ink-soft);
  font-size: 1.02rem;
  margin: 0 0 40px;
}
.about-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.meta-item {
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.meta-item:hover { border-color: var(--accent); transform: translateY(-2px); }
.meta-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}
.meta-value { font-weight: 600; }

/* Projects — empty state */
.empty-state {
  border: 1.5px dashed var(--border);
  border-radius: var(--radius);
  padding: 64px 32px;
  text-align: center;
  background: #fff;
}
.empty-icon { font-size: 2.4rem; margin-bottom: 14px; }
.empty-state h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  margin: 0 0 10px;
}
.empty-state p {
  color: var(--ink-soft);
  max-width: 46ch;
  margin: 0 auto;
}

/* Skills */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px 48px;
}
.skill-group h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  margin: 0 0 14px;
  color: var(--ink);
}
.skill-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.skill-tags span {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 7px 13px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.skill-tags span:hover { border-color: var(--accent); color: var(--accent); }

/* Timeline */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
  padding-left: 28px;
  border-left: 2px solid var(--border);
}
.timeline-item {
  position: relative;
  padding: 0 0 40px 24px;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: -35px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}
.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 6px;
}
.timeline-content h3 { font-family: var(--font-display); margin: 0 0 4px; font-size: 1.15rem; }
.timeline-org { color: var(--ink-soft); font-weight: 500; margin: 0 0 10px; }
.timeline-content p:last-child { margin: 0; color: var(--ink-soft); }

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}
.contact-card {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}
.contact-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 14px 30px rgba(47, 111, 237, 0.12);
}
.contact-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-faint);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.contact-value { font-weight: 600; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
}
.footer-inner {
  font-size: 0.85rem;
  color: var(--ink-faint);
  text-align: center;
}

/* ===== Responsive ===== */
@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-title { align-items: center; }
  .hero-lede { margin-left: auto; margin-right: auto; }
  .hero-actions, .hero-links { justify-content: center; }
  .hero-photo { order: -1; margin-bottom: 12px; }
  .about-meta { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }

  .nav {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px;
    gap: 16px;
    display: none;
  }
  .nav.open { display: flex; }
  .nav-toggle { display: flex; }
}