/* =========================================================
   Miryana Vinka Dayanti — personal site
   Japandi: warm, light, minimal. Design tokens up top so the
   whole site is easy to retune from one place.
   ========================================================= */

:root {
  /* Palette — warm paper / soft charcoal */
  --bg:        #ffffff;  /* white background */
  --surface:   #ffffff;  /* cards / raised areas  */
  --text:      #33302b;  /* soft charcoal (not pure black) */
  --muted:     #857c6f;  /* secondary text */
  --hairline:  #e5dfd4;  /* thin dividers / borders */
  --accent:    #b08968;  /* muted clay — used sparingly */
  --accent-soft:#cdb8a3; /* lighter clay for hovers */
  --notice-bg: #faf5ee;  /* very light brown — job-market box */

  /* Type */
  --sans: "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --serif: "Cormorant Garamond", Georgia, "Times New Roman", serif;

  /* Rhythm */
  --measure: 760px;     /* readable column width */
  --space: 1.6rem;
}

/* Dark theme — warm, soft (japandi at night), not pure black */
[data-theme="dark"] {
  --bg:        #232120;
  --surface:   #2b2926;
  --text:      #ece6dc;
  --muted:     #a79e91;
  --hairline:  #3a352f;
  --accent:    #cfa783;
  --accent-soft:#8d7a64;
  --notice-bg: #332c25;
}

/* ---------- reset-ish ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-weight: 300;          /* thin weight = the reference's elegance */
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color .3s ease, color .3s ease;
}
img { max-width: 100%; height: auto; display: block; }

/* ---------- layout shell ---------- */
.wrap {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---------- header / nav ---------- */
.site-header {
  padding: 2.4rem 0 1.2rem;
  background: var(--bg);   /* white header, matches page */
}
.site-header .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.6rem 1.5rem;
}
.brand {
  font-size: 1.15rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text);
  text-decoration: none;
  border-bottom: 0;
  font-weight: 400;
}
.brand:hover { color: var(--accent); }
.nav {
  display: flex;
  gap: 1.6rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}
.nav a:hover { color: var(--text); }
.nav a.active {
  color: #6b4a30;            /* dark brown for the current tab */
  border-bottom-color: #6b4a30;
}

/* dark-mode toggle */
.nav-toggle { display: flex; align-items: center; }
.theme-toggle {
  background: none;
  border: 0;
  cursor: pointer;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1;
  padding: 0 0 2px;
  transition: color .2s ease, transform .2s ease;
}
.theme-toggle:hover { color: var(--text); transform: rotate(-15deg); }

.rule {
  border: 0;
  border-top: 1px solid var(--hairline);
  margin: 0;
}

/* ---------- main ---------- */
main { padding: 3rem 0 1rem; }

h1, h2, h3 {
  font-weight: 300;
  line-height: 1.2;
  letter-spacing: 0.01em;
  color: var(--text);
}
h1 { font-size: 2.4rem; margin: 0 0 0.4rem; }
h2 {
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--muted);
  margin: 2.8rem 0 1rem;
}
h3 { font-size: 1.25rem; margin: 1.8rem 0 0.3rem; }

p { margin: 0 0 1.1rem; }
a { color: var(--accent); text-decoration: none; border-bottom: 1px solid var(--accent-soft); transition: color .2s, border-color .2s; }
a:hover { color: var(--text); border-bottom-color: var(--text); }

.lead { font-size: 1rem; color: var(--text); }
.muted { color: var(--muted); }

/* ---------- job-market notice ---------- */
.notice {
  background: var(--notice-bg);
  border-left: 4px solid #6b4a30;
  padding: 1rem 1.25rem;
  color: var(--text);
  font-size: 0.95rem;
  margin: 0 0 1.6rem;
}

/* ---------- fields list ---------- */
.fields h3 { margin-top: 0; }
.field-list {
  list-style: none;
  padding: 0;
  margin: 0.4rem 0 0;
}
.field-list li {
  position: relative;
  padding-left: 1.1rem;
  color: var(--text);
  margin-bottom: 0.3rem;
}
.field-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* ---------- home hero ---------- */
.hero {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2.4rem;
  margin-bottom: 1rem;
}
.hero .portrait {
  flex: 0 0 auto;
  width: 190px;
  height: 190px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--surface);
  border: 1px solid var(--hairline);
}
.hero .intro { flex: 1 1 280px; }
.hero h1 {
  /* optional japandi serif accent for the name; swap to var(--sans) if you prefer */
  font-family: var(--serif);
  font-size: 3rem;
  letter-spacing: 0.01em;
}
.hero .role {
  color: var(--muted);
  font-size: 1rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-top: 0.2rem;
}

/* ---------- inline link row (social / contact) ---------- */
.links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.4rem;
  padding: 0;
  margin: 1.4rem 0 0;
}
.links a {
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--hairline);
  color: var(--muted);
}
.links a:hover { color: var(--text); border-bottom-color: var(--accent); }

/* ---------- publication / paper list ---------- */
.papers { margin: 0; padding: 0; list-style: none; }
.paper {
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--hairline);
}
.paper:last-child { border-bottom: 0; }
.paper .title { color: var(--text); font-size: 1rem; margin: 0 0 0.2rem; }
.paper .year {
  float: right;
  color: var(--muted);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  margin-left: 1rem;
}
.paper .meta { color: var(--muted); font-size: 0.95rem; margin: 0 0 0.4rem; }
.paper .abstract { color: var(--text); font-size: 0.98rem; margin: 0.4rem 0 0; }
.paper .authors { font-weight: 300; color: var(--text); }

/* collapsible papers (native <details>) */
details.paper summary {
  cursor: pointer;
  list-style: none;
  display: block;
  position: relative;
  padding-right: 2rem;
}
details.paper summary::-webkit-details-marker { display: none; }
details.paper summary :last-child { margin-bottom: 0; }
details.paper .chev {
  position: absolute;
  right: 0;
  top: 0.15rem;
  color: var(--muted);
  font-size: 0.85rem;
  transition: transform .2s ease;
}
details.paper[open] .chev { transform: rotate(180deg); }
details.paper .abstract {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--hairline);
}
details.paper summary:hover .title { color: var(--accent); }

/* ---------- photo gallery ---------- */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
  margin: 1.8rem 0 2rem;
}
.gallery figure { margin: 0; }
.gallery img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--hairline);
  border-radius: 2px;
  background: var(--surface);
}
.gallery figcaption {
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 0.4rem;
}
.gallery img { cursor: zoom-in; }

/* ---------- lightbox ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  background: rgba(20, 18, 16, 0.9);
  cursor: zoom-out;
}
.lightbox.open { display: flex; }
.lightbox img {
  max-width: 95vw;
  max-height: 95vh;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 2px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

/* ---------- media embed ---------- */
.embed { margin: 1.4rem 0 2rem; max-width: 640px; }
.embed iframe { display: block; width: 100%; }

/* ---------- button ---------- */
.btn {
  display: inline-block;
  margin-top: 0.6rem;
  padding: 0.7rem 1.4rem;
  border: 1px solid var(--accent);
  border-radius: 2px;
  color: var(--accent);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: transparent;
  transition: background .2s, color .2s;
}
.btn:hover { background: var(--accent); color: var(--bg); border-bottom-color: var(--accent); }

/* ---------- footer ---------- */
.site-footer {
  margin-top: 4rem;
  padding: 2rem 0 3rem;
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
}
.site-footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.6rem; }

/* ---------- responsive ---------- */
@media (max-width: 560px) {
  body { font-size: 15px; }
  .hero { gap: 1.6rem; }
  .hero .portrait { width: 140px; height: 140px; }
  .hero h1 { font-size: 2.3rem; }
  h1 { font-size: 2rem; }
  .site-header .wrap { flex-direction: column; align-items: flex-start; }
}