/* ============================================
   TOKENS
   ============================================ */
:root {
  --bg:        #0f1420;
  --bg-alt:    #131a2c;
  --bg-card:   #161d31;
  --line:      #26304a;
  --line-soft: #1c2438;
  --text:      #e9ecf2;
  --text-dim:  #8b94a7;
  --text-faint:#5b6478;
  --accent:    #ffb000;
  --accent-dim:#ffb00022;
  --ok:        #5ee6a8;

  --display: 'Space Grotesk', sans-serif;
  --body:    'Source Serif 4', serif;
  --mono:    'IBM Plex Mono', monospace;

  --maxw: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

h1, h2, h3, h4 {
  font-family: var(--display);
  font-weight: 600;
  margin: 0;
}

.mono { font-family: var(--mono); }

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ============================================
   SIGNATURE: instrument tape strip
   ============================================ */
.tape {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 6px;
  background: var(--bg);
  border-bottom: 1px solid var(--line-soft);
  overflow: hidden;
}
.tape-track {
  height: 100%;
  background-image: repeating-linear-gradient(
    90deg,
    var(--accent) 0px,
    var(--accent) 1px,
    transparent 1px,
    transparent 28px
  );
  opacity: 0.55;
}

/* ============================================
   HEADER / NAV
   ============================================ */
.site-header {
  position: sticky;
  top: 6px;
  z-index: 40;
  background: rgba(15, 20, 32, 0.88);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line-soft);
}

.nav {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 18px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-name {
  font-family: var(--display);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  font-size: 15px;
}

.nav-links {
  display: flex;
  gap: 28px;
  align-items: center;
  font-size: 14px;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-dim);
  transition: color 0.15s ease;
}
.nav-links a:hover { color: var(--text); }

.nav-resume {
  color: var(--accent) !important;
  font-family: var(--mono);
  font-size: 13px;
}

/* ============================================
   HERO
   ============================================ */
.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 76px 28px 64px;
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 48px;
  align-items: start;
  position: relative;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 25%;
  filter: grayscale(0.35) contrast(1.05) brightness(0.75);
  opacity: 0.9;
}

.hero-bg-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, var(--bg) 0%, rgba(15,20,32,0.86) 32%, rgba(15,20,32,0.45) 62%, rgba(15,20,32,0.7) 100%),
    linear-gradient(to bottom, transparent 60%, var(--bg) 100%);
}

.hero-inner,
.hero-readout {
  position: relative;
  z-index: 1;
}

.eyebrow {
  color: var(--accent);
  font-size: 12.5px;
  letter-spacing: 0.12em;
  margin: 0 0 18px;
}

.hero-title {
  font-size: clamp(2.1rem, 4.2vw, 3.4rem);
  line-height: 1.12;
  letter-spacing: -0.01em;
}

.hero-sub {
  max-width: 46ch;
  color: var(--text-dim);
  font-size: 18px;
  margin: 22px 0 0;
}

.hero-personal {
  max-width: 46ch;
  color: var(--text-faint);
  font-size: 15px;
  font-style: italic;
  margin: 14px 0 0;
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 32px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 3px;
  font-family: var(--mono);
  font-size: 13.5px;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--accent);
  color: #17130a;
  font-weight: 500;
}
.btn-primary:hover { background: #ffc133; }

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

/* instrument readout card, mimics a cockpit tape */
.hero-readout {
  border: 1px solid var(--line);
  background: var(--bg-card);
  border-radius: 4px;
  padding: 20px 22px;
  font-size: 13px;
  margin-top: 8px;
}

.readout-row {
  display: flex;
  justify-content: space-between;
  padding: 9px 0;
  border-bottom: 1px dashed var(--line-soft);
  color: var(--text-dim);
  letter-spacing: 0.04em;
}
.readout-row:last-child { border-bottom: none; }
.readout-row span:last-child { color: var(--text); }
.readout-row .ok { color: var(--ok); }

/* ============================================
   SECTIONS (shared)
   ============================================ */
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 88px 28px;
}
.section-alt {
  max-width: none;
  background: var(--bg-alt);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.section-alt > * {
  max-width: calc(var(--maxw) - 56px);
  margin-left: auto;
  margin-right: auto;
}

.section-head {
  margin-bottom: 44px;
}

.section-head h2 {
  font-size: 1.9rem;
}

.section-note {
  color: var(--text-dim);
  margin: 8px 0 0;
  font-size: 15px;
}

/* ============================================
   PROJECT ROWS ("spec sheets", horizontal)
   ============================================ */
.project-list {
  display: flex;
  flex-direction: column;
  gap: 96px;
}

.project-row {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  align-items: center;
}

/* alternate layout: image side swaps to the left */
.project-row-reverse .project-info { order: 2; }
.project-row-reverse .project-slider { order: 1; }

.project-info { min-width: 0; }

.project-plate {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--accent);
  border-bottom: 1px solid var(--line-soft);
  padding-bottom: 12px;
  margin-bottom: 16px;
}

.project-info h3 {
  font-size: 1.5rem;
  margin-bottom: 12px;
  line-height: 1.25;
}

.project-info p {
  color: var(--text-dim);
  font-size: 15.5px;
}

.tags {
  list-style: none;
  padding: 0;
  margin: 18px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tags li {
  font-size: 11px;
  color: var(--text-faint);
  border: 1px solid var(--line);
  padding: 4px 9px;
  border-radius: 3px;
}

.project-link {
  display: inline-block;
  margin-top: 22px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--accent);
  width: fit-content;
  padding-bottom: 2px;
}
.project-link:hover { color: var(--accent); }

/* ---- image slider ---- */
.project-slider {
  position: relative;
  min-width: 0;
}

.slider-track {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  border-radius: 4px;
  /* hide scrollbar visually; still keyboard/touch scrollable */
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.slider-track::-webkit-scrollbar { display: none; }

.slide {
  flex: 0 0 100%;
  scroll-snap-align: center;
  aspect-ratio: 4 / 3;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--bg-card);
}

.slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* fallback shown if an image file is missing, instead of a broken-image icon */
.slide-empty {
  position: relative;
}
.slide-empty img { display: none; }
.slide-empty::before {
  content: "Image not added yet";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-faint);
  background:
    repeating-linear-gradient(45deg, var(--bg-card), var(--bg-card) 10px, var(--line-soft) 10px, var(--line-soft) 11px);
}

.slider-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: rgba(15, 20, 32, 0.82);
  color: var(--text);
  font-family: var(--mono);
  font-size: 15px;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.slider-btn:hover { border-color: var(--accent); background: rgba(15, 20, 32, 0.95); }
.slider-prev { left: 10px; }
.slider-next { right: 10px; }

/* ============================================
   TECHNICAL PROJECTS (supplementary, compact)
   ============================================ */
.tech-projects {
  margin-top: 96px;
  padding-top: 56px;
  border-top: 1px solid var(--line-soft);
}

.tech-head h3 {
  font-size: 1.3rem;
}

.tech-head .section-note {
  margin-top: 6px;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.tech-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.tech-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.tech-slider .slide {
  aspect-ratio: 16 / 10;
  border: none;
  border-radius: 0;
}

.tech-card-body {
  padding: 18px 20px 22px;
}

.tech-card-body .project-plate {
  margin-bottom: 12px;
  padding-bottom: 10px;
}

.tech-card-body h4 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.tech-card-body p {
  color: var(--text-dim);
  font-size: 14px;
  margin: 0;
}

/* ============================================
   PROGRESS
   ============================================ */
.novel-progress-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 24px;
}

.novel-progress-head {
  display: flex;
  justify-content: space-between;
  gap: 28px;
  align-items: flex-start;
}

.novel-progress-head h3 {
  font-size: 1.3rem;
  margin-bottom: 8px;
}

.novel-progress-head p {
  color: var(--text-dim);
  font-size: 15.5px;
  margin: 0;
  max-width: 62ch;
}

.novel-status {
  flex: 0 0 auto;
  color: var(--accent);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 5px 9px;
  font-size: 11px;
  letter-spacing: 0.08em;
}

.progress-meta {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 24px;
  margin-bottom: 8px;
  color: var(--text-faint);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.progress-track {
  position: relative;
  height: 8px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--bg);
}

.progress-fill {
  position: absolute;
  top: 0;
  bottom: 0;
  left: -34%;
  width: 34%;
  background: var(--accent);
  animation: novel-progress-sweep 2.4s ease-in-out infinite;
}

@keyframes novel-progress-sweep {
  0% { left: -34%; }
  55%, 100% { left: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .progress-fill {
    animation: none;
    left: 0;
    width: 100%;
    opacity: 0.22;
  }
}

/* ============================================
   TIMELINE
   ============================================ */
.timeline {
  list-style: none;
  margin: 0 auto;
  padding: 0;
  border-left: 1px solid var(--line);
}

.timeline-item {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 32px;
  padding: 0 0 40px 28px;
  position: relative;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
}

.timeline-item:last-child { padding-bottom: 0; }

.timeline-date {
  color: var(--text-faint);
  font-size: 12.5px;
  padding-top: 3px;
}

.timeline-body h3 {
  font-size: 1.05rem;
}

.timeline-org {
  color: var(--accent);
  font-size: 14px;
  margin: 4px 0 10px;
  font-family: var(--mono);
}

.timeline-body p:not(.timeline-org) {
  color: var(--text-dim);
  font-size: 15px;
  margin: 0;
}

/* ============================================
   SYSTEMS GRID
   ============================================ */
.systems-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.systems-col h4 {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 10px;
  font-family: var(--mono);
}

.systems-col p {
  color: var(--text-dim);
  font-size: 13.5px;
  line-height: 1.7;
  margin: 0;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  border-top: 1px solid var(--line-soft);
  padding: 40px 28px 56px;
}

.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  text-align: center;
}

.footer-line {
  color: var(--text-faint);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  margin: 0 0 20px;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 26px;
  font-size: 14px;
  margin-bottom: 22px;
}

.footer-links a { text-decoration: none; color: var(--text-dim); }
.footer-links a:hover { color: var(--accent); }

.footer-copy {
  color: var(--text-faint);
  font-size: 12.5px;
  margin: 0;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 860px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 56px;
  }
  .project-list {
    gap: 56px;
  }
  .project-row,
  .project-row-reverse {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .project-row-reverse .project-info,
  .project-row-reverse .project-slider {
    order: initial;
  }
  .tech-grid {
    grid-template-columns: 1fr;
  }
  .systems-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .timeline-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}

@media (max-width: 560px) {
  .novel-progress-head { flex-direction: column; gap: 16px; }
  .nav-links { gap: 16px; font-size: 13px; }
  .nav-resume { display: none; }
  .systems-grid { grid-template-columns: 1fr; }
}