/* ===========================================================
   Abhishek Babu — personal site
   Minimal mono: whitespace-driven, monospace accents.
   =========================================================== */

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

  --bg: #fcfcfb;
  --fg: #1a1a18;
  --soft: #4b4b46;
  --muted: #86867f;
  --line: #e7e7e2;
  --accent: #2f6df0;

  --space: clamp(2.75rem, 9vh, 5.5rem);
}

[data-theme="dark"] {
  --bg: #0c0c0d;
  --fg: #ededec;
  --soft: #b7b7b2;
  --muted: #79797a;
  --line: #232325;
  --accent: #7aa2ff;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color .35s ease, color .35s ease;
}

::selection { background: var(--accent); color: #fff; }

/* --- layout ------------------------------------------------ */

.wrap {
  max-width: 640px;
  margin: 0 auto;
  padding: var(--space) clamp(1.4rem, 6vw, 2rem) 4rem;
}

/* --- intro ------------------------------------------------- */

.avatar {
  display: block;
  width: 76px;
  height: 76px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 1.5rem;
  border: 1px solid var(--line);
}

h1 {
  font-size: clamp(2.4rem, 8vw, 3.4rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.04;
}

.role {
  display: flex;
  align-items: center;
  margin-top: 1rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.role .dot { margin: 0 0.6em; opacity: 0.6; }

.lede {
  margin-top: 1.6rem;
  font-size: 1.12rem;
  color: var(--soft);
  max-width: 34ch;
}

/* --- link row ---------------------------------------------- */

.links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.15rem;
  margin-top: 1.8rem;
}

.links a {
  display: inline-flex;
  color: var(--muted);
  transition: color .2s ease;
}

.links a svg {
  display: block;
  width: 20px;
  height: 20px;
}

.links a:hover { color: var(--fg); }

.links a:focus-visible {
  color: var(--fg);
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 3px;
}

/* --- sections ---------------------------------------------- */

.block { margin-top: var(--space); }

.label-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.label {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}

.label-row::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}

.entry + .entry { margin-top: 1.9rem; }

.entry-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem 1.2rem;
  flex-wrap: wrap;
  margin-bottom: 0.5rem;
}

.entry-head h3 {
  font-size: 1.06rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.entry-head h3 a {
  color: var(--fg);
  text-decoration: none;
  transition: color .2s ease;
}

.entry-head h3 a::after {
  content: "\2197";
  display: inline-block;
  margin-left: 0.12em;
  font-size: 0.68em;
  font-weight: 500;
  color: var(--muted);
  transition: color .2s ease, transform .2s ease;
}

.entry-head h3 a:hover,
.entry-head h3 a:focus-visible { color: var(--accent); outline: none; }

.entry-head h3 a:hover::after,
.entry-head h3 a:focus-visible::after {
  color: var(--accent);
  transform: translate(1px, -1px);
}

.entry-meta {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--muted);
}

.entry p { color: var(--soft); }

.degrees { list-style: none; margin-top: 0.55rem; }

.degrees li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.4rem 1.2rem;
  flex-wrap: wrap;
}

.degrees li + li { margin-top: 0.3rem; }

.degree { font-size: 0.98rem; color: var(--soft); }

/* --- artifacts: supplementary links per entry -------------- */

.artifacts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 1.15rem;
  margin-top: 0.9rem;
  font-family: var(--mono);
  font-size: 0.78rem;
}

.artifacts a {
  color: var(--muted);
  text-decoration: none;
  transition: color .2s ease;
}

.artifacts a::before {
  content: "\2197";
  margin-right: 0.3em;
  font-size: 0.85em;
  opacity: 0.7;
}

.artifacts a:hover,
.artifacts a:focus-visible { color: var(--fg); outline: none; }

/* --- footer ------------------------------------------------ */

footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: var(--space);
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--muted);
}

footer a {
  color: var(--muted);
  text-decoration: none;
  transition: color .2s ease;
}
footer a:hover,
footer a:focus-visible { color: var(--fg); outline: none; }
footer a.ext::before {
  content: "\2197";
  margin-right: 0.25em;
  font-size: 0.85em;
}

/* --- theme toggle ------------------------------------------ */

.theme-toggle {
  position: fixed;
  top: clamp(1rem, 3vw, 1.6rem);
  right: clamp(1rem, 3vw, 1.6rem);
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg);
  color: var(--muted);
  cursor: pointer;
  transition: color .2s ease, border-color .2s ease, transform .15s ease;
}

.theme-toggle:hover { color: var(--fg); border-color: var(--muted); }
.theme-toggle:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.theme-toggle:active { transform: scale(0.92); }

.theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }

/* --- reveal animation -------------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(12px);
}

.reveal.in {
  opacity: 1;
  transform: none;
  transition: opacity .65s ease, transform .65s cubic-bezier(.2, .7, .2, 1);
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; }
  * { transition: none !important; }
}