/* ============================================
   TOKENS
   ============================================ */
:root {
  --ink: #0B1220;
  --ink-2: #101B2D;
  --ink-3: #16233A;
  --blueprint: #5EC8E0;
  --blueprint-dim: rgba(94, 200, 224, 0.22);
  --blueprint-faint: rgba(94, 200, 224, 0.08);
  --paper: #EAF1F3;
  --slate: #8695A6;
  --steel: #C9702F;

  --font-display: 'JetBrains Mono', 'Courier New', monospace;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --max-w: 1180px;
  --edge: clamp(24px, 5vw, 72px);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

ul { list-style: none; margin: 0; padding: 0; }

h1, h2, h3 { font-family: var(--font-display); margin: 0; }

/* ============================================
   CROP MARKS (signature detail)
   ============================================ */
.crop {
  position: fixed;
  width: 22px;
  height: 22px;
  border-color: var(--blueprint-dim);
  border-style: solid;
  border-width: 0;
  z-index: 50;
  pointer-events: none;
}
.crop-tl { top: 14px; left: 14px; border-top-width: 1px; border-left-width: 1px; }
.crop-tr { top: 14px; right: 14px; border-top-width: 1px; border-right-width: 1px; }
.crop-bl { bottom: 14px; left: 14px; border-bottom-width: 1px; border-left-width: 1px; }
.crop-br { bottom: 14px; right: 14px; border-bottom-width: 1px; border-right-width: 1px; }

/* ============================================
   NAV
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px var(--edge);
  background: linear-gradient(to bottom, rgba(11,18,32,0.9), transparent);
}

.nav-mark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.05em;
}
.nav-mark .dot { color: var(--steel); }

.nav-links {
  display: flex;
  gap: 32px;
}
.nav-links a {
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--slate);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color 0.2s ease;
}
.nav-links a:hover { color: var(--blueprint); }
.nav-links .idx {
  color: var(--blueprint-dim);
  font-size: 11px;
}

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

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  padding: 120px var(--edge) 80px;
  overflow: hidden;
  max-width: var(--max-w);
  margin: 0 auto;
}

.grid-field {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--blueprint-faint) 1px, transparent 1px),
    linear-gradient(90deg, var(--blueprint-faint) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 70% 60% at 30% 40%, black 40%, transparent 85%);
  z-index: 0;
}

.hero-inner {
  position: relative;
  z-index: 2;
}

.eyebrow {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--blueprint);
  margin: 0 0 24px;
  text-transform: uppercase;
}

.hero-name {
  font-size: clamp(2.6rem, 6.2vw, 4.6rem);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.hero-role {
  font-family: var(--font-display);
  font-size: clamp(0.95rem, 1.3vw, 1.1rem);
  color: var(--blueprint);
  margin: 20px 0 0;
}

.hero-tag {
  font-size: 1.05rem;
  color: var(--slate);
  max-width: 46ch;
  margin: 18px 0 0;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 40px;
}

.btn {
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.03em;
  padding: 14px 24px;
  border-radius: 2px;
  border: 1px solid transparent;
  transition: all 0.2s ease;
  display: inline-block;
}
.btn-primary {
  background: var(--blueprint);
  color: var(--ink);
  font-weight: 600;
}
.btn-primary:hover { background: #7ed4e8; }
.btn-ghost {
  border-color: var(--blueprint-dim);
  color: var(--paper);
}
.btn-ghost:hover { border-color: var(--blueprint); color: var(--blueprint); }

/* stack diagram */
.stack-diagram {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: center;
}
.stack-diagram svg { width: 100%; max-width: 320px; height: auto; overflow: visible; }

.block rect {
  fill: var(--ink-2);
  stroke: var(--blueprint-dim);
  stroke-width: 1;
}
.block-label {
  font-family: var(--font-display);
  font-size: 13px;
  fill: var(--blueprint);
  font-weight: 600;
}
.block-code {
  font-family: var(--font-display);
  font-size: 10px;
  fill: var(--slate);
}
.dim-line, .dim-tick { stroke: var(--blueprint-dim); stroke-width: 1; }
.dim-text {
  font-family: var(--font-display);
  font-size: 9px;
  fill: var(--slate);
  letter-spacing: 0.1em;
}

.block {
  opacity: 0;
  transform: translateX(24px);
  animation: slideIn 0.6s ease forwards;
}
.block[data-delay="0"] { animation-delay: 0.15s; }
.block[data-delay="1"] { animation-delay: 0.35s; }
.block[data-delay="2"] { animation-delay: 0.55s; }
.block[data-delay="3"] { animation-delay: 0.75s; }

@keyframes slideIn {
  to { opacity: 1; transform: translateX(0); }
}

.title-block {
  position: absolute;
  right: var(--edge);
  bottom: 40px;
  z-index: 2;
  font-family: var(--font-display);
  font-size: 11px;
  border-top: 1px solid var(--blueprint-dim);
  padding-top: 10px;
  min-width: 220px;
}
.tb-row {
  display: flex;
  justify-content: space-between;
  color: var(--slate);
  padding: 3px 0;
  gap: 24px;
}
.tb-row span:last-child { color: var(--paper); }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-top: 140px; }
  .stack-diagram { margin-top: 60px; }
  .title-block { position: static; margin-top: 48px; }
}

/* ============================================
   SHEETS (sections)
   ============================================ */
.sheet {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 100px var(--edge);
  border-top: 1px solid var(--blueprint-dim);
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.sheet.in-view { opacity: 1; transform: translateY(0); }

.sheet-label {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--steel);
  text-transform: uppercase;
  margin: 0 0 40px;
}

.sheet-body h3 {
  font-size: 1.5rem;
  color: var(--paper);
  margin-bottom: 8px;
}

/* about */
.about-body .lead {
  font-size: 1.35rem;
  color: var(--paper);
  max-width: 62ch;
  line-height: 1.5;
}
.about-body p {
  max-width: 62ch;
  color: var(--slate);
}

/* skills */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}
.skill-col h3 {
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--blueprint);
  text-transform: uppercase;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--blueprint-dim);
  padding-bottom: 12px;
}
.skill-col li {
  color: var(--paper);
  padding: 6px 0;
  font-size: 0.95rem;
}
@media (max-width: 800px) {
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
}

/* projects */
.project-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--blueprint-dim);
}
.project {
  background: var(--ink);
  padding: 40px;
  transition: background 0.25s ease;
}
.project:hover { background: var(--ink-2); }
.project-tag {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--steel);
  margin-bottom: 14px;
}
.project h3 { font-size: 1.4rem; margin-bottom: 12px; }
.project p { color: var(--slate); max-width: 68ch; margin-bottom: 20px; }
.project-stack {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.project-stack span {
  font-family: var(--font-display);
  font-size: 11px;
  color: var(--blueprint);
  border: 1px solid var(--blueprint-dim);
  padding: 5px 10px;
  border-radius: 2px;
}
.project-link {
  font-family: var(--font-display);
  font-size: 13px;
  color: var(--paper);
  border-bottom: 1px solid var(--blueprint);
  padding-bottom: 2px;
}
.project-link:hover { color: var(--blueprint); }

/* experience */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 44px;
}
.tl-item {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 24px;
}
.tl-marker {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--blueprint);
  margin-top: 8px;
}
.tl-content h3 { font-size: 1.2rem; margin-bottom: 4px; }
.tl-meta {
  font-family: var(--font-display);
  font-size: 12px;
  color: var(--steel);
  margin: 0 0 10px;
}
.tl-content p:last-child { color: var(--slate); max-width: 60ch; }

/* contact */
.sheet-contact { text-align: left; }
.contact-heading {
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--paper);
  margin-bottom: 16px;
}
.contact-sub { color: var(--slate); max-width: 52ch; margin-bottom: 36px; }
.contact-links {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}
.contact-links a {
  font-family: var(--font-display);
  font-size: 15px;
  color: var(--paper);
  border-bottom: 1px solid var(--blueprint-dim);
  padding-bottom: 4px;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.contact-links a:hover { color: var(--blueprint); border-color: var(--blueprint); }

/* footer */
.site-footer {
  text-align: center;
  padding: 40px var(--edge) 60px;
  font-family: var(--font-display);
  font-size: 12px;
  color: var(--slate);
}

/* focus visibility */
a:focus-visible, .btn:focus-visible {
  outline: 2px solid var(--blueprint);
  outline-offset: 3px;
}