/* ---------- Tokens ---------- */
:root {
  --bg: #0a0b0f;
  --bg-elevated: #12141a;
  --border: #22252e;
  --text: #e8e9ed;
  --text-dim: #9a9ea8;
  --text-faint: #5c6070;
  --accent: #6ee7b7;
  --accent-2: #7dd3fc;
  --accent-soft: rgba(110, 231, 183, 0.12);
  --radius: 14px;
  --font-sans: "Space Grotesk", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --max-width: 1080px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; text-decoration: none; }

/* ---------- Background decoration ---------- */
.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 100%);
  pointer-events: none;
  z-index: 0;
}

.bg-glow {
  position: fixed;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 500px;
  background: radial-gradient(circle, rgba(110,231,183,0.15), transparent 70%);
  pointer-events: none;
  z-index: 0;
  filter: blur(40px);
}

/* ---------- Nav ---------- */
.nav-wrap {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  background: rgba(10, 11, 15, 0.7);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
}
.logo .dot { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  font-size: 0.92rem;
  color: var(--text-dim);
  transition: color 0.2s ease;
  position: relative;
}
.nav-links a:hover { color: var(--text); }

.nav-cta { flex-shrink: 0; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}
.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--accent);
  color: #06120c;
}
.btn-primary:hover { box-shadow: 0 8px 24px rgba(110, 231, 183, 0.25); }

.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--accent); }

.btn-small { padding: 9px 18px; font-size: 0.85rem; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  z-index: 1;
  min-height: calc(100vh - 68px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 40px;
  padding-bottom: 80px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(110,231,183,0.25);
  padding: 6px 14px;
  border-radius: 999px;
  width: fit-content;
  margin-bottom: 28px;
}
.pulse-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 rgba(110,231,183, 0.6);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(110,231,183, 0.5); }
  70% { box-shadow: 0 0 0 8px rgba(110,231,183, 0); }
  100% { box-shadow: 0 0 0 0 rgba(110,231,183, 0); }
}

.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  line-height: 1.08;
  margin: 0 0 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
  max-width: 16ch;
}
.accent {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--text-dim);
  max-width: 620px;
  margin: 0 0 36px;
}
.hero-sub .sep { color: var(--text-faint); margin: 0 2px; }
.highlight { color: var(--text); font-weight: 500; }

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 44px;
}

.hero-socials {
  display: flex;
  gap: 20px;
}
.hero-socials a {
  color: var(--text-faint);
  transition: color 0.2s ease, transform 0.2s ease;
}
.hero-socials a:hover { color: var(--accent); transform: translateY(-2px); }

/* ---------- Sections ---------- */
.section {
  position: relative;
  z-index: 1;
  padding: 110px 24px;
  border-top: 1px solid var(--border);
}

.section-tag {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  margin: 0 0 12px;
}

.section-title {
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 48px;
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: start;
}
.about-grid .section-title { margin-bottom: 24px; }
.about-text {
  color: var(--text-dim);
  margin: 0 0 18px;
  font-size: 1.02rem;
}
.about-facts {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.fact {
  display: flex;
  gap: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
  font-size: 0.92rem;
}
.fact-label {
  color: var(--text-faint);
  font-family: var(--font-mono);
  min-width: 90px;
  flex-shrink: 0;
}
.fact-value { color: var(--text); }

.terminal {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,0.02);
}
.terminal-bar span {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: #3a3d47;
}
.terminal-bar span:nth-child(1) { background: #ff5f57; }
.terminal-bar span:nth-child(2) { background: #febc2e; }
.terminal-bar span:nth-child(3) { background: #28c840; }
.terminal-title {
  margin-left: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-faint);
}
.terminal-body {
  margin: 0;
  padding: 22px;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--text-dim);
  overflow-x: auto;
}
.tk-kw { color: #c792ea; }
.tk-var { color: #82aaff; }
.tk-key { color: #7dd3fc; }
.tk-str { color: #6ee7b7; }
.tk-bool { color: #f78c6c; }

/* ---------- Skills ---------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.skill-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.skill-card:hover { border-color: rgba(110,231,183,0.3); transform: translateY(-3px); }
.skill-card h3 {
  margin: 0 0 16px;
  font-size: 1rem;
  color: var(--text);
}
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chip {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  color: var(--text-dim);
}
.chip-sm { font-size: 0.74rem; padding: 5px 10px; }

/* ---------- Projects ---------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.project-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}
.project-card:hover {
  border-color: rgba(110,231,183,0.3);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.35);
}
.project-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}
.project-icon { color: var(--accent); font-size: 1.1rem; }
.project-links { display: flex; gap: 16px; }
.project-links a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dim);
  border-bottom: 1px solid transparent;
}
.project-links a:hover { color: var(--accent); border-color: var(--accent); }
.project-card h3 { margin: 0 0 10px; font-size: 1.15rem; }
.project-card p {
  color: var(--text-dim);
  font-size: 0.94rem;
  margin: 0 0 20px;
  flex-grow: 1;
}

/* ---------- Timeline ---------- */
.timeline {
  position: relative;
  padding-left: 32px;
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 44px;
}
.timeline-item { position: relative; }
.timeline-dot {
  position: absolute;
  left: -37.5px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
}
.timeline-date {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.8rem;
}
.timeline-content h3 { margin: 8px 0 8px; font-size: 1.1rem; }
.timeline-content p { margin: 0; color: var(--text-dim); font-size: 0.95rem; max-width: 640px; }

/* ---------- Contact ---------- */
.contact-section { text-align: center; }
.contact-section .section-tag,
.contact-section .section-title { display: inline-block; }
.contact-section .section-title { display: block; }
.contact-sub {
  color: var(--text-dim);
  max-width: 520px;
  margin: 0 auto 36px;
  font-size: 1.02rem;
}
.contact-actions { display: flex; justify-content: center; margin-bottom: 32px; }
.contact-links {
  display: flex;
  justify-content: center;
  gap: 28px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--text-dim);
}
.contact-links a:hover { color: var(--accent); }

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--border);
  position: relative;
  z-index: 1;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 28px 24px;
  font-size: 0.85rem;
  color: var(--text-faint);
}
.back-top { color: var(--text-faint); transition: color 0.2s ease; }
.back-top:hover { color: var(--accent); }

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
  .projects-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: flex; }

  .nav-wrap.open .nav-links {
    display: flex;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
  }
  .nav-wrap.open .nav-links li { border-bottom: 1px solid var(--border); }
  .nav-wrap.open .nav-links a { display: block; padding: 16px 24px; }
  .nav-wrap.open .nav-cta {
    display: block;
    position: absolute;
    top: 260px;
    left: 24px;
  }

  .skills-grid { grid-template-columns: 1fr; }
  .section { padding: 80px 20px; }
  .footer-inner { flex-direction: column; gap: 10px; text-align: center; }
}