:root {
  --forest: #183129;
  --forest-dark: #0c221a;
  --moss: #466b55;
  --cream: #f2ede1;
  --beige: #e4dcc8;
  --paper: #eae3d2;
  --text: #1c2620;
  --muted: #5b6b60;
  --line: #c9bfa2;
  --accent: #6b8f6e;

  --bg: var(--cream);
  --bg-tint: var(--beige);
  --fg: var(--text);
  --fg-muted: var(--muted);
  --card-bg: var(--paper);
  --border: var(--line);
  --header-bg: rgba(242, 237, 225, 0.92);

  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --max-width: 1280px;
  --radius: 3px;
}

[data-theme="dark"] {
  --bg: var(--forest-dark);
  --bg-tint: #162920;
  --fg: #e6deca;
  --fg-muted: #99ad97;
  --card-bg: #17301f;
  --border: #2c4636;
  --header-bg: rgba(15, 35, 28, 0.92);
  --accent: #88b686;
}

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  transition: background 0.25s ease, color 0.25s ease;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  background-attachment: fixed;
  background-position: -1px -1px;
}
[data-theme="dark"] body { background-image: none; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--forest);
  color: #fff;
  padding: 10px 16px;
  z-index: 200;
}
.skip-link:focus { left: 8px; top: 8px; }

h1, h2, h3 {
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--fg);
  margin: 0 0 0.5em;
}
h2 { font-size: clamp(1.5rem, 2.4vw, 1.9rem); }
h3 { font-size: 1.05rem; }
p { margin: 0 0 1em; max-width: 62ch; color: var(--fg); }
a { color: inherit; }

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

.section-inner, .header-inner, .hero-inner, .footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-bg);
  backdrop-filter: saturate(140%) blur(6px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.wordmark {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--forest);
}
[data-theme="dark"] .wordmark { color: var(--accent); }
.wordmark-mark { font-size: 0.9rem; opacity: 0.75; }

.main-nav ul {
  display: flex;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.main-nav a {
  text-decoration: none;
  font-size: 0.92rem;
  color: var(--fg-muted);
  padding: 4px 2px;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.main-nav a:hover { color: var(--fg); border-color: var(--accent); }
.main-nav a.is-current { color: var(--fg); border-color: var(--accent); }

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

.theme-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--fg);
  padding: 6px 10px;
  border-radius: var(--radius);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.78rem;
}
.theme-toggle:hover { border-color: var(--accent); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 34px;
  height: 34px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 1.5px;
  background: var(--fg);
  margin: 0 7px;
}

.hero { padding: 72px 0 56px; }
.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.hero-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--fg-muted);
  margin-bottom: 14px;
}
.hero-heading {
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  line-height: 1.08;
  max-width: 14ch;
  margin-bottom: 20px;
}
.hero-sub { font-size: 1.05rem; color: var(--fg-muted); max-width: 46ch; }
.hero-actions { display: flex; gap: 14px; margin: 24px 0 28px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 11px 20px;
  border-radius: var(--radius);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.12s ease, background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--forest); color: #f2ede1; }
[data-theme="dark"] .btn-primary { background: var(--accent); color: var(--forest-dark); }
.btn-primary:hover { background: var(--moss); }
.btn-secondary { background: transparent; border-color: var(--border); color: var(--fg); }
.btn-secondary:hover { border-color: var(--accent); }
.btn-instagram { background: transparent; border-color: var(--border); color: var(--fg); }
.btn-instagram:hover { border-color: #c13584; color: #c13584; }
[data-theme="dark"] .btn-instagram:hover { border-color: #e6683c; color: #e6683c; }

.status-line {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--fg-muted);
  border: 1px solid var(--border);
  padding: 8px 14px;
  border-radius: var(--radius);
  background: var(--card-bg);
}
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4d8f5b;
  box-shadow: 0 0 0 3px rgba(77, 143, 91, 0.18);
}

.hero-visual { color: var(--moss); }
[data-theme="dark"] .hero-visual { color: var(--accent); }
.hero-svg { width: 100%; height: auto; }
.topo-lines { opacity: 0.35; }
.circuit-dots { opacity: 0.6; }

.section { padding: 64px 0; }
.section-tint { background: var(--bg-tint); }
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 28px;
}
.section-lede { color: var(--fg-muted); max-width: 56ch; }

.about-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 48px; }
.learning-block { margin-bottom: 20px; padding-left: 14px; border-left: 2px solid var(--border); }
.learning-block h3 { margin-bottom: 4px; }
.learning-block p { font-size: 0.94rem; color: var(--fg-muted); margin: 0; }

.filter-group { display: flex; gap: 8px; flex-wrap: wrap; }
.filter-btn {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--fg-muted);
  padding: 6px 12px;
  border-radius: var(--radius);
  cursor: pointer;
}
.filter-btn:hover { color: var(--fg); border-color: var(--accent); }
.filter-btn.is-active { background: var(--forest); color: var(--cream); border-color: var(--forest); }
[data-theme="dark"] .filter-btn.is-active {
  background: var(--accent);
  color: var(--forest-dark);
  border-color: var(--accent);
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.project-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  display: flex;
  flex-direction: column;
}
.project-card--large { grid-column: span 2; grid-row: span 1; }
.project-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  gap: 10px;
}
.project-card h3 { margin: 0; }
.project-card p { font-size: 0.94rem; color: var(--fg-muted); }

.status-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  padding: 3px 8px;
  border-radius: 2px;
  white-space: nowrap;
  border: 1px solid transparent;
}

/* ACTIVE — green */
.status-active {
  background: rgba(77, 143, 91, 0.15);
  color: #3c6d47;
  border-color: rgba(77, 143, 91, 0.4);
}

/* BUILDING — amber */
.status-building {
  background: rgba(200, 150, 40, 0.18);
  color: #8a6a1f;
  border-color: rgba(200, 150, 40, 0.45);
}

/* NEXT — blue */
.status-next {
  background: rgba(70, 120, 190, 0.15);
  color: #3a5f96;
  border-color: rgba(70, 120, 190, 0.4);
}

/* EXPERIMENT — grey (kept for future use) */
.status-experiment {
  background: rgba(120, 120, 120, 0.15);
  color: #666;
  border-color: rgba(120, 120, 120, 0.3);
}

/* Dark mode overrides */
[data-theme="dark"] .status-active { color: #8fd39c; background: rgba(77, 143, 91, 0.2); }
[data-theme="dark"] .status-building { color: #e0c072; background: rgba(200, 150, 40, 0.2); }
[data-theme="dark"] .status-next { color: #8ab4f0; background: rgba(70, 120, 190, 0.2); }
[data-theme="dark"] .status-experiment { color: #b7c2b8; background: rgba(120, 120, 120, 0.2); }

.tag-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 0;
  margin: 4px 0 16px;
}
.tag-list li {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--fg-muted);
  border: 1px solid var(--border);
  padding: 3px 8px;
  border-radius: 2px;
}
.project-card-foot { margin-top: auto; }
.link-arrow {
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--forest);
  border-bottom: 1px solid var(--accent);
}
[data-theme="dark"] .link-arrow { color: var(--accent); }
.link-arrow--disabled {
  color: var(--fg-muted);
  border-bottom-color: var(--border);
  cursor: default;
}
.project-card.is-hidden { display: none; }

/* Image strip: single row on desktop, wraps on smaller screens */
.image-strip {
  display: flex;
  flex-wrap: nowrap;
  justify-content: center;
  align-items: stretch;
  gap: 14px;
  margin-top: 32px;
}

.image-placeholder {
  flex: 1 1 0;
  min-width: 0;
  max-width: 240px;
  height: 180px;
  margin: 0;
  overflow: hidden;
  background: var(--card-bg);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--fg-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.15s ease;
}
.image-placeholder img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  border-radius: var(--radius);
}
.image-placeholder:hover { border-color: var(--accent); }
.image-placeholder span { opacity: 0.7; }

.log-note-placeholder {
  margin-top: 20px;
  font-size: 0.88rem;
  color: var(--fg-muted);
  border-top: 1px dashed var(--border);
  padding-top: 16px;
}

/* Interests: scattered pin board */
.pin-board {
  position: relative;
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  min-height: 900px;
}

.pin-note {
  position: absolute;
  width: 200px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 16px 18px 18px;
  box-shadow: 2px 3px 0 rgba(0, 0, 0, 0.06);
  transform: rotate(var(--rot, 0deg));
  transform-origin: center top;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  z-index: 1;
}
.pin-note:hover {
  transform: rotate(var(--rot, 0deg)) translateY(-4px) scale(1.03);
  box-shadow: 4px 7px 0 rgba(0, 0, 0, 0.12);
  z-index: 10;
}
.pin-note::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 16px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--moss);
  border: 2px solid var(--bg);
  box-shadow: inset 0 -2px 2px rgba(0, 0, 0, 0.2);
}
[data-theme="dark"] .pin-note::before { background: var(--accent); }

.pin-cat {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.05em;
  color: var(--fg-muted);
  margin-bottom: 6px;
}
.pin-note h3 { font-size: 0.95rem; margin: 0 0 4px; }
.pin-note p { font-size: 0.82rem; color: var(--fg-muted); margin: 0; }

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal.is-visible { opacity: 1; transform: none; }

/* Keep pin notes rotated through both reveal states */
.pin-note.reveal {
  opacity: 0;
  transform: rotate(var(--rot, 0deg));
}
.pin-note.reveal.is-visible {
  opacity: 1;
  transform: rotate(var(--rot, 0deg));
}

.chip-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chip-list li {
  font-size: 0.85rem;
  color: var(--fg);
  background: var(--card-bg);
  border: 1px solid var(--border);
  padding: 5px 11px;
  border-radius: 999px;
}

.now-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 12px;
}
.now-grid .learning-block { margin-bottom: 0; }

.skills-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.skill-group ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.skill-group li {
  font-size: 0.9rem;
  color: var(--fg-muted);
  padding-bottom: 6px;
  border-bottom: 1px dashed var(--border);
}

.philosophy-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.philosophy-item p { font-size: 0.92rem; color: var(--fg-muted); }

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 2px solid var(--border);
}
.timeline-item { position: relative; padding: 0 0 28px 26px; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 4px;
  width: 10px;
  height: 10px;
  background: var(--moss);
  border-radius: 50%;
}
[data-theme="dark"] .timeline-item::before { background: var(--accent); }
.timeline-item--next::before { background: transparent; border: 2px solid var(--moss); }
.timeline-year {
  font-family: var(--font-mono);
  font-weight: 700;
  display: block;
  margin-bottom: 4px;
}
.timeline-item p { margin: 0; color: var(--fg-muted); }

.log-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--border);
}
.log-entry {
  display: grid;
  grid-template-columns: 120px 140px 1fr;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.92rem;
  align-items: baseline;
}
.log-date {
  font-family: var(--font-mono);
  color: var(--fg-muted);
  font-size: 0.85rem;
}
.log-project { font-weight: 700; }
.log-note { color: var(--fg-muted); }

.github-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.repo-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.repo-list li {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  font-size: 0.88rem;
  background: var(--card-bg);
}
.repo-list a { text-decoration: none; font-weight: 700; color: var(--forest); }
[data-theme="dark"] .repo-list a { color: var(--accent); }
.repo-lang {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--fg-muted);
  margin-left: 8px;
}

.contact-block { text-align: left; max-width: 640px; }
.contact-links { display: flex; gap: 14px; margin-top: 20px; flex-wrap: wrap; }

.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  background: var(--bg-tint);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--fg-muted);
}
.footer-brand p { margin: 4px 0 0; font-size: 0.85rem; }
.footer-links { display: flex; gap: 18px; }
.footer-links a { text-decoration: none; }
.footer-links a:hover { color: var(--fg); }
.footer-copy { margin: 0; }

@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { order: -1; max-width: 280px; margin: 0 auto; }
  .about-grid { grid-template-columns: 1fr; }
  .project-grid { grid-template-columns: 1fr 1fr; }
  .project-card--large { grid-column: span 2; }
  .skills-grid { grid-template-columns: 1fr 1fr; }
  .philosophy-grid { grid-template-columns: 1fr 1fr; }
  .now-grid { grid-template-columns: 1fr 1fr; }
  .github-block { grid-template-columns: 1fr; }

  .image-strip {
    flex-wrap: wrap;
    gap: 12px;
  }
  .image-placeholder {
    flex: 0 0 200px;
    max-width: 200px;
    height: 150px;
  }

  .pin-board {
    position: static;
    max-width: none;
    min-height: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    padding: 8px 0;
  }
  .pin-note,
  .pin-note.reveal,
  .pin-note.reveal.is-visible {
    position: static;
    width: auto;
    transform: none !important;
    opacity: 1;
  }
}

@media (max-width: 640px) {
  .main-nav {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
  }
  .main-nav.is-open { max-height: 320px; }
  .main-nav ul { flex-direction: column; gap: 0; padding: 8px 24px 16px; }
  .main-nav a {
    display: block;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
  }
  .nav-toggle { display: flex; }
  .theme-toggle-label { display: none; }

  .project-grid { grid-template-columns: 1fr; }
  .project-card--large { grid-column: span 1; }
  .skills-grid { grid-template-columns: 1fr 1fr; }
  .philosophy-grid { grid-template-columns: 1fr; }
  .now-grid { grid-template-columns: 1fr; }
  .log-entry { grid-template-columns: 1fr; gap: 4px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }

  .image-strip { gap: 10px; }
  .image-placeholder {
    flex: 0 0 160px;
    max-width: 160px;
    height: 120px;
  }

  .pin-board { grid-template-columns: 1fr; }
}