/* =============================================
   RESET & TOKENS
   ============================================= */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

:root {
  --ink:        #0B0E14;
  --ink-2:      #11151F;
  --surface:    #161B26;
  --paper:      #F5F3EC;
  --slate:      #8B95A8;
  --slate-dim:  #4A526324;
  --line:       rgba(245,243,236,0.10);
  --line-hover: rgba(245,243,236,0.24);
  --accent:     #FF6B35;
  --accent-dim: rgba(255,107,53,0.14);
  --mono: 'JetBrains Mono', 'Courier New', monospace;
  --sans: 'Inter', system-ui, -apple-system, sans-serif;
  --container: 1180px;
}

body {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

h1, h2, h3 { font-family: var(--mono); letter-spacing: -0.02em; color: var(--paper); }

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

/* faint blueprint grid */
.grid-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.35;
  mask-image: radial-gradient(ellipse 60% 50% at 50% 0%, black 0%, transparent 75%);
}

main, header, footer { position: relative; z-index: 1; }

/* =============================================
   HEADER
   ============================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11,14,20,0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 20px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand { display: flex; align-items: center; gap: 10px; }

.brand-mark {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.78rem;
  background: var(--accent);
  color: var(--ink);
  width: 30px; height: 30px;
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
}

.brand-text {
  font-family: var(--mono);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--paper);
}

.brand-text .dim { color: var(--slate); }

.primary-nav { display: flex; gap: 36px; }

.primary-nav a {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--slate);
  display: flex;
  align-items: center;
  gap: 7px;
  transition: color 0.2s ease;
}

.primary-nav a:hover { color: var(--paper); }

.nav-idx { color: var(--accent); font-size: 0.7rem; }

.nav-cta {
  font-family: var(--mono);
  font-size: 0.78rem;
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  padding: 8px 16px;
  border-radius: 99px;
  color: var(--paper);
  transition: border-color 0.2s ease;
}

.nav-cta:hover { border-color: var(--line-hover); }

.status-dot {
  width: 6px; height: 6px;
  background: #3DDC97;
  border-radius: 50%;
  box-shadow: 0 0 6px #3DDC97;
  animation: blink 2.2s ease infinite;
}

@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.menu-toggle span {
  width: 22px; height: 2px;
  background: var(--paper);
}

.mobile-nav {
  display: none;
  flex-direction: column;
  position: sticky;
  top: 73px;
  z-index: 49;
  background: var(--ink-2);
  border-bottom: 1px solid var(--line);
}

.mobile-nav.open { display: flex; }

.mobile-nav a {
  font-family: var(--mono);
  font-size: 0.85rem;
  padding: 16px 24px;
  border-bottom: 1px solid var(--line);
  color: var(--slate);
}

/* =============================================
   LAYOUT HELPERS
   ============================================= */
.section { padding: 130px 0; border-bottom: 1px solid var(--line); }
.section-inner { max-width: var(--container); margin: 0 auto; padding: 0 48px; }
.section-alt { background: var(--ink-2); }

.section-head { margin-bottom: 64px; }

.section-idx {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  display: block;
  margin-bottom: 18px;
}

.section-head h2 {
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  font-weight: 600;
}

/* =============================================
   HERO
   ============================================= */
.hero { padding: 90px 0 130px; border-bottom: 1px solid var(--line); }

.hero-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 48px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.kicker {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--slate);
  margin-bottom: 28px;
}

.hero-title {
  font-size: clamp(2.6rem, 5.4vw, 4.4rem);
  font-weight: 700;
  line-height: 1.05;
  margin-bottom: 26px;
}

.hero-desc {
  font-family: var(--sans);
  font-size: 1.08rem;
  color: var(--slate);
  max-width: 480px;
  line-height: 1.75;
  margin-bottom: 40px;
}

.hero-actions { display: flex; gap: 18px; margin-bottom: 64px; flex-wrap: wrap; }

.btn-fill {
  font-family: var(--mono);
  font-size: 0.88rem;
  font-weight: 600;
  background: var(--accent);
  color: var(--ink);
  padding: 15px 28px;
  border-radius: 6px;
  transition: filter 0.2s ease, transform 0.2s ease;
}

.btn-fill:hover { filter: brightness(1.08); transform: translateY(-1px); }

.btn-line {
  font-family: var(--mono);
  font-size: 0.88rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  padding: 15px 22px;
  border-radius: 6px;
  color: var(--paper);
  transition: border-color 0.2s ease, gap 0.2s ease;
}

.btn-line:hover { border-color: var(--line-hover); gap: 12px; }

.arrow { color: var(--accent); }

.hero-facts {
  display: flex;
  gap: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}

.fact dt {
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--slate);
  margin-bottom: 6px;
}

.fact dd { font-size: 0.92rem; color: var(--paper); font-weight: 500; }

/* hero right: terminal + diagram */
.hero-right { display: flex; flex-direction: column; gap: 28px; }

.terminal {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 11px 16px;
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid var(--line);
}

.t-dot { width: 9px; height: 9px; border-radius: 50%; }
.t-dot.red { background: #FF5F57; }
.t-dot.yellow { background: #FEBC2E; }
.t-dot.green { background: #28C840; }

.terminal-title {
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--slate);
  margin-left: 8px;
}

.terminal-body { padding: 18px 16px; font-family: var(--mono); font-size: 0.78rem; }

.terminal-body p { color: var(--paper); margin-bottom: 9px; line-height: 1.6; }

.prompt { color: var(--accent); margin-right: 8px; }

.terminal-body .out { color: var(--slate); padding-left: 18px; }
.terminal-body .out.ok { color: #3DDC97; }

.cursor { animation: blink 1s step-end infinite; color: var(--accent); }

.node-diagram { width: 100%; height: auto; }
.node-diagram .edge { stroke: var(--line-hover); stroke-width: 1.5; }
.node-diagram .node { fill: var(--ink); stroke: var(--slate); stroke-width: 1.5; }
.node-diagram .node.accent { fill: var(--accent); stroke: var(--accent); }
.node-diagram .node-label {
  font-family: var(--mono);
  font-size: 9px;
  fill: var(--slate);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* =============================================
   ABOUT
   ============================================= */
.about-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 70px;
}

.about-lead {
  font-size: 1.15rem;
  line-height: 1.8;
  color: var(--paper);
}

.about-points { display: flex; flex-direction: column; gap: 32px; }

.point { display: flex; gap: 20px; }

.point-idx {
  font-family: var(--mono);
  color: var(--accent);
  font-size: 0.95rem;
  flex-shrink: 0;
  padding-top: 3px;
}

.point h3 { font-size: 1.02rem; font-weight: 600; margin-bottom: 6px; }
.point p { font-size: 0.92rem; color: var(--slate); line-height: 1.7; }

/* =============================================
   STACK
   ============================================= */
.stack-table { display: flex; flex-direction: column; }

.stack-row {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 32px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  align-items: baseline;
}

.stack-row:last-child { border-bottom: 1px solid var(--line); }

.stack-label {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--slate);
}

.stack-items { display: flex; flex-wrap: wrap; gap: 10px; }

.stack-items span {
  font-size: 0.92rem;
  color: var(--paper);
  padding: 5px 0;
  position: relative;
}

.stack-items span:not(:last-child)::after {
  content: '·';
  color: var(--slate);
  margin-left: 10px;
}

/* =============================================
   WORK
   ============================================= */
.work-list { display: flex; flex-direction: column; }

.work-item {
  padding: 44px 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
  transition: padding-left 0.3s ease;
}

.work-list .work-item:last-child { border-bottom: 1px solid var(--line); }

.work-item:hover { padding-left: 12px; }

.work-meta { display: flex; flex-direction: column; gap: 8px; }

.work-id { font-family: var(--mono); font-size: 0.85rem; color: var(--accent); font-weight: 700; }
.work-type { font-family: var(--mono); font-size: 0.74rem; color: var(--slate); }

.work-item h3 { font-size: 1.3rem; font-weight: 600; margin-bottom: 14px; }
.work-item p { color: var(--slate); font-size: 0.95rem; max-width: 600px; margin-bottom: 18px; }

.work-tags { display: flex; flex-wrap: wrap; gap: 9px; }

.work-tags span {
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(255,107,53,0.25);
  padding: 4px 11px;
  border-radius: 99px;
}

/* =============================================
   CONTACT
   ============================================= */
.section-contact { border-bottom: none; padding-bottom: 80px; }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-grid h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.18;
  margin-top: 18px;
}

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

.contact-row {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  transition: gap 0.25s ease, color 0.25s ease;
}

.contact-links .contact-row:last-child { border-bottom: 1px solid var(--line); }

.contact-row:hover { gap: 26px; color: var(--accent); }

.contact-label {
  font-family: var(--mono);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--slate);
  width: 80px;
  flex-shrink: 0;
}

.contact-value { font-size: 1rem; flex: 1; font-weight: 500; }

/* =============================================
   FOOTER
   ============================================= */
.site-footer {
  display: flex;
  justify-content: space-between;
  padding: 28px 48px;
  max-width: var(--container);
  margin: 0 auto;
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--slate);
}

.footer-dim { color: var(--slate); opacity: 0.6; }

/* =============================================
   SCROLL REVEAL
   ============================================= */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-right { order: -1; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid { grid-template-columns: 1fr; }
  .primary-nav { display: none; }
}

@media (max-width: 680px) {
  .header-inner { padding: 16px 24px; }
  .nav-cta { display: none; }
  .menu-toggle { display: flex; }
  .mobile-nav a { padding: 14px 24px; }
  .section { padding: 80px 0; }
  .section-inner { padding: 0 24px; }
  .hero { padding: 60px 0 80px; }
  .hero-inner { padding: 0 24px; }
  .hero-facts { flex-wrap: wrap; gap: 24px; }
  .work-item { grid-template-columns: 1fr; gap: 14px; }
  .stack-row { grid-template-columns: 1fr; gap: 10px; }
  .site-footer { flex-direction: column; gap: 6px; padding: 24px; }
}