/* Typewriter-inspired, off-white aesthetic with dark mode */
:root {
  --bg: #faf7f0;
  --paper: #fffdf7;
  --ink: #1b1b1b;
  --muted: #6b6b6b;
  --accent: #3a3a3a;
  --line: #e8e1d2;
  --shadow: 0 2px 24px rgba(0,0,0,0.05);
}

html[data-theme="dark"] {
  --bg: #0f1115;
  --paper: #0c0e13;
  --ink: #eaeaea; /* high-contrast text color */
  --muted: #a0a4ad;
  --accent: #cfcfcf;
  --line: #1c2230;
  --shadow: 0 2px 28px rgba(0,0,0,0.4);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: "IBM Plex Serif", ui-serif, Georgia, "Times New Roman", Times, serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  letter-spacing: 0.2px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background .4s ease, color .4s ease, border-color .35s ease;
}
/* leave room for the fixed header so page content is not hidden */
body { padding-top: 64px; }

h1, h2, h3 { font-weight: 600; letter-spacing: 0.4px; }
h1 { font-size: clamp(1.6rem, 2.2vw + 1rem, 2.4rem); margin: 0 0 0.75rem; }
h2 { font-size: clamp(1.2rem, 1.5vw + 0.8rem, 1.5rem); margin: 1.5rem 0 0.5rem; }
h3 { margin: 1rem 0 0.5rem; }

p { margin: 0.5rem 0 1rem; }
code { font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace; }

.container { width: min(100%, 1000px); margin: 0 auto; padding: 1.2rem; }
.section { padding: 2rem 0; }
.mt { margin-top: 1rem; }
.muted { color: var(--muted); }
.tiny { font-size: 0.85rem; }
.tiny-link { color: var(--muted); text-decoration: none; border-bottom: 1px dotted var(--muted); }
.tiny-link:hover { color: var(--ink); }

.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1200;
  backdrop-filter: blur(6px);
  background: color-mix(in oklab, var(--bg) 88%, transparent);
  border-bottom: 1px solid var(--line);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.6rem 1rem;
}

/* hide/show header on scroll (transition via transform) */
.site-header.hide {
  transform: translateY(calc(-100% - 6px));
  transition: transform .25s ease-in;
}
.site-header.show {
  transform: translateY(0);
  transition: transform .2s ease-out;
}

.brand {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  letter-spacing: 1px;
  text-decoration: none; color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 0.35rem 0.6rem; border-radius: 8px;
  box-shadow: var(--shadow);
}

.favicon-btn {
  background: transparent; border: none; padding: 0; margin-left: 0.5rem; display: inline-grid; place-items: center;
}
.favicon-btn img { width: 30px; height: 30px; display: block; }

.nav { display: flex; gap: 1rem; align-items: center; }
.nav-link { color: var(--ink); text-decoration: none; border-bottom: 1px solid transparent; padding-bottom: 2px; }
.nav-link:hover { border-color: var(--ink); }

.header-actions { display: flex; align-items: center; gap: 0.5rem; }

.icon-btn {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 10px;
  height: 38px; width: 38px;
  display: grid; place-items: center;
  cursor: pointer;
  box-shadow: var(--shadow);
  color: var(--ink); /* match contrast text so sun/moon always visible */
  transition: background .3s ease, color .3s ease, border-color .3s ease;
}
/* Spin animation when toggled */
@keyframes spinOnce { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
.icon-btn.spin-once svg { animation: spinOnce .55s cubic-bezier(.2,.9,.3,1); transform-origin: 50% 50%; }

/* Ensure inline SVGs use currentColor so they inherit high-contrast colors */
.icon-btn svg { color: inherit; fill: none; stroke: currentColor; }

.hamburger {
  --bar: 20px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 10px;
  height: 38px; width: 44px;
  display: none;
  gap: 3px;
  flex-direction: column; align-items: center; justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow);
}
.hamburger img { width: 22px; height: 22px; }
.hamburger[aria-expanded="true"] { border-radius: 8px; }

@media (max-width: 800px) {
  .hamburger { display: flex; }
  .nav {
    position: absolute; inset: 60px 10px auto 10px;
    background: var(--paper);
    border: 1px solid var(--line); border-radius: 12px;
    padding: 0.6rem; gap: 0.6rem; box-shadow: var(--shadow);
    display: none; flex-direction: column;
  }
  .nav.open { display: flex; }
}

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 0.45rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.55rem 0.9rem;
  text-decoration: none; color: var(--ink);
  box-shadow: var(--shadow);
  cursor: pointer;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-outline { background: transparent; border-style: dashed; }

.input {
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.55rem 0.75rem;
  box-shadow: var(--shadow);
}

.cta-row { display: flex; flex-wrap: wrap; gap: 0.6rem; margin: 0.75rem 0 1.25rem; }

/* Timeline: full height in page (no inner scrolling) */
.timeline-wrapper {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--paper);
  box-shadow: var(--shadow);
  padding: 1rem;
}
.timeline {
  position: relative; list-style: none; margin: 0; padding: 0;
  height: 100%;
}
.timeline::before {
  content: ""; position: absolute; left: 50%; top: 0; transform: translateX(-50%);
  width: 2px; height: 100%; background: linear-gradient(to bottom, var(--line), var(--line));
}

/* small circular markers at the very top and bottom of the central timeline line */
.timeline::after {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: -6px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--paper);
  border: 1px solid var(--line);
  z-index: 8;
  box-shadow: var(--shadow);
}
.timeline-container::after {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: -6px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--paper);
  border: 1px solid var(--line);
  z-index: 8;
  box-shadow: var(--shadow);
}
.timeline li { position: absolute; width: 50%; box-sizing: border-box; }
.timeline li.left { left: 0; text-align: right; }
.timeline li.right { left: 50%; }
.timeline li .card { display: inline-block; width: 420px; background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 0.7rem 0.9rem; box-shadow: var(--shadow); vertical-align: top; }
/* remove per-card circular markers */
.timeline li::after { display: none; }

/* About headshot placeholder: oval, angled */
.headshot {
  width: 240px;
  height: 280px;
  border-radius: 48% / 54%;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, color-mix(in oklab, var(--paper) 88%, #f6f6f6), color-mix(in oklab, var(--paper) 96%, #fafafa));
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  transform: none;
  float: right;
  margin-left: 1rem;
  margin-bottom: 0.6rem;
}
.headshot img { width: 100%; height: 100%; object-fit: cover; display: block; }
@media (max-width: 900px) {
  .headshot { float: none; margin: 0 auto 1rem; transform: none; display: block; width: 180px; height: 210px; }
}

/* Narrow the About intro text for better readability */
#about .container .intro { max-width: 66ch; }

/* Card hover + clickable cursor */
.timeline li .card { transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease; cursor: pointer; }
.timeline li .card:hover, .timeline li .card:focus { transform: translateY(-6px) scale(1.01); box-shadow: 0 6px 36px rgba(0,0,0,0.12); border-color: color-mix(in oklab, var(--ink) 12%, transparent); }

/* keep cards away from the central line */
.timeline li.left .card { margin-right: 36px; }
.timeline li.right .card { margin-left: 36px; }


/* Education cards: keep same width but allow fuller content (lists, paragraphs) */
.timeline li.left .card.edu { width: 420px; background: color-mix(in oklab, var(--paper) 94%, #f0f0f0); border: 1px solid color-mix(in oklab, var(--line) 70%, transparent); padding: 0.9rem 1rem; }
.timeline li.left .card.edu .desc { margin-top: 0.6rem; color: var(--muted); font-size: 0.95rem; }
.timeline li.left .card.edu .desc ul { margin: 0.25rem 0 0 1rem; }
.timeline li.left .card.edu .desc li { margin: 0.3rem 0; }
/* preserve newlines from JSON (\n) inside description paragraphs */
.desc p { white-space: pre-line; }

/* Right side: uniform card sizes (height controlled via JS) */
.timeline li.right .card { width: 420px; }

/* Year labels centered on the timeline */
.timeline-year { left: 50%; transform: translateX(-50%); position: absolute; z-index: 6; }
.timeline-year .year-label { background: var(--paper); padding: .2rem .6rem; border-radius: 8px; border:1px solid var(--line); font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 0.9rem; }

/* Travel overlay: under construction image full cover */
.travel-overlay { position: absolute; inset: 0; background-image: url('assets/under_construction_sign.jpg'); background-size: cover; background-position: center; opacity: 0.12; pointer-events: none; z-index: 3; }
.map-wrap { position: relative; }
.map-wrap .travel-overlay { position: absolute; inset: 0; }

/* Continuity bookend for year marker: we'll place a circular marker overlay */
.timeline-container { position: relative; }
.timeline-year { position: absolute; left: 50%; transform: translateX(-50%); top: 0; display: flex; gap: 8px; align-items: center; z-index: 5; }
/* Removed circular bookend markers: keep year label only */
.timeline-year .year-label { background: var(--paper); border: 1px solid var(--line); padding: 0.15rem .45rem; border-radius: 8px; font-family: "IBM Plex Mono", ui-monospace, monospace; color: var(--muted); font-weight: 600; }


@media (max-width: 900px) {
  .timeline li .card { width: calc(100% - 56px); margin: 0; }
  .timeline li.left, .timeline li.right { left: 0; width: 100%; }
  .timeline li.left .card, .timeline li.right .card { margin-left: 8px; margin-right: 8px; }
  .timeline-year { left: 40px; transform: none; }
}
.timeline .when { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 0.78rem; color: var(--muted); margin-bottom: 0.25rem; }
.timeline .what { font-weight: 600; }
.timeline .where { color: var(--muted); }

/* allow overlap by absolute positioning - spacing will be computed via JS */


@media (max-width: 900px) {
  .timeline li, .timeline::before { left: 0; transform: none; width: 100%; }
  .timeline::before { left: 8px; }
  .timeline li { padding-left: 2rem; margin-bottom: 1rem; transform: none; }
  .timeline li .card { width: calc(100% - 32px); }
}

/* Highlights section */
.highlights { display: flex; gap: 0.6rem; flex-wrap: wrap; margin: 0.8rem 0 1rem; }
.highlight { background: var(--paper); border: 1px solid var(--line); padding: 0.55rem 0.9rem; border-radius: 10px; cursor: pointer; box-shadow: var(--shadow); }
.highlight a { text-decoration: none; color: var(--ink); }

.map-and-legend { display: grid; grid-template-columns: 1fr min(280px, 40%); gap: 1rem; align-items: start; }
@media (max-width: 900px){ .map-and-legend { grid-template-columns: 1fr; } }

.map-wrap {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px; overflow: hidden;
  box-shadow: var(--shadow);
}
.map-wrap img { width: 100%; display: block; }
.pins { position: absolute; inset: 0; }
.pin {
  position: absolute;
  transform: translate(-50%, -100%);
  min-width: 36px; min-height: 36px; padding: 8px 10px;
  border-radius: 999px; /* circular */
  border: 1px solid var(--line);
  background: var(--bg);
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 13px; font-weight: 700; text-align: center; line-height: 1;
  cursor: pointer;
  box-shadow: var(--shadow);
}

.blog-toolbar {
  display: flex; flex-wrap: wrap; gap: 0.6rem; align-items: center;
  margin: 1rem 0 0.6rem;
}
.chips { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.chip { border: 1px dashed var(--line); padding: 0.25rem 0.5rem; border-radius: 999px; cursor: pointer; background: var(--paper); }
.chip.active { border-style: solid; }

/* Ensure tags and chips have high contrast in both themes */
.tag, .chip { background: color-mix(in oklab, var(--paper) 88%, transparent); color: var(--ink); border-color: var(--line); }
.tag { padding: 0.15rem 0.45rem; font-weight: 600; }

/* Under construction banner for blog section */
.under-construction {
  display: inline-flex; align-items: center; gap: .6rem;
  background: linear-gradient(90deg,#ffea00,#f6c000); /* subtle yellow */
  color: #0b0b0b; padding: .45rem .75rem; border-radius: 8px; border: 2px solid #0b0b0b;
  box-shadow: 0 4px 12px rgba(11,11,11,0.12); font-weight: 700; font-family: "IBM Plex Mono", ui-monospace, monospace;
}

/* Full-bleed wide banner that sits above the travel section but doesn't block interactions below */
.fullwide-uc { width: 100%; background: linear-gradient(90deg,#ffea00,#f6c000); border-bottom: 2px solid #0b0b0b; }
.fullwide-uc .container { padding: 0.6rem 1.2rem; display: flex; justify-content: center; }
.fullwide-uc { position: relative; z-index: 0; pointer-events: none; }
.fullwide-uc .under-construction { border-radius: 6px; padding: .75rem 1.25rem; font-size: clamp(1.6rem, 4vw, 3.2rem); font-weight: 800; letter-spacing: 1px; pointer-events: none; }

/* Theme fade overlay to coordinate color/brightness change with spin */
.theme-fade {
  transition: background-color .45s ease, color .45s ease;
}

.posts { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 0.8rem; }
.post {
  border: 1px solid var(--line); border-radius: 14px; padding: 0.9rem; background: var(--paper);
  box-shadow: var(--shadow);
  display: flex; flex-direction: column; gap: 0.4rem;
  position: relative; z-index: 1; /* ensure posts are above other overlays */
}

/* Ensure buttons/links in posts are clickable above nearby overlays */
.post .btn, .post a { position: relative; z-index: 5; }
.post .meta { font-family: "IBM Plex Mono", ui-monospace, monospace; color: var(--muted); font-size: 0.85rem; }
.post .tags { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.post .tag { font-size: 0.8rem; border: 1px solid var(--line); border-radius: 999px; padding: 0.1rem 0.4rem; }

/* experience detail page styles */
.exp-gallery { display:flex; gap:12px; flex-wrap:wrap; margin: 0.6rem 0; }
.exp-gallery figure { width: min(360px, 48%); margin:0; border:1px solid var(--line); background: var(--paper); padding:6px; border-radius:8px; }
.exp-gallery img { width:100%; height:auto; display:block; border-radius:6px; }
.exp-gallery figcaption { font-size:0.9rem; color:var(--muted); margin-top:0.4rem; }
.exp-links ul { margin:0.4rem 0 0 1.05rem; }
.exp-links li { margin: 0.25rem 0; }
.long-desc { margin-top: .4rem; color: var(--muted); }

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.2rem 0 1.8rem;
  margin-top: 2rem;
}