/* ==========================================================================
   Code4Policy — DPI-691M
   Plain CSS, no build step. Edit this file directly.
   ========================================================================== */

:root {
  --paper:      #f4efe6;
  --paper-deep: #ebe3d5;
  --ink:        #17140f;
  --ink-soft:   #4a443b;
  --muted:      #8a8175;
  --crimson:    #a51c30;
  --rule:       rgba(23, 20, 15, 0.14);

  --display: "Fraunces", Georgia, serif;
  --mono:    "IBM Plex Mono", ui-monospace, Menlo, monospace;

  --measure: 62ch;
  --gutter:  clamp(1.25rem, 5vw, 5rem);
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background-color: var(--paper);
  /* Faint paper grain, drawn inline so there is no image file to load. */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.045'/%3E%3C/svg%3E");
  color: var(--ink);
  font-family: var(--display);
  font-optical-sizing: auto;
  font-variation-settings: "SOFT" 0, "WONK" 0;
  font-size: clamp(1rem, 0.95rem + 0.2vw, 1.0625rem);
  line-height: 1.6;
}

a { color: inherit; }

/* --- Site header ---------------------------------------------------------- */

.masthead {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem 2rem;
  padding: 1.75rem var(--gutter);
  border-bottom: 1px solid var(--rule);
}

.wordmark {
  font-family: var(--mono);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.wordmark::before {
  content: "";
  width: 0.7rem;
  height: 0.7rem;
  background: var(--crimson);
}

.masthead nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.masthead nav a {
  text-decoration: none;
  padding-bottom: 0.15rem;
  border-bottom: 1px solid transparent;
  color: var(--ink-soft);
  transition: color 0.2s, border-color 0.2s;
}

.masthead nav a:hover,
.masthead nav a[aria-current="page"] {
  color: var(--ink);
  border-bottom-color: var(--crimson);
}

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

main { padding: 0 var(--gutter) 6rem; }

.lede {
  max-width: var(--measure);
  color: var(--ink-soft);
  font-size: 1.15rem;
  line-height: 1.65;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--crimson);
  margin: 0 0 1.25rem;
}

/* --- Home ----------------------------------------------------------------- */

.hero { padding: clamp(3.5rem, 10vw, 7rem) 0 clamp(2rem, 4vw, 3rem); }

.hero h1 {
  font-size: clamp(2.25rem, 6.2vw, 4.75rem);
  font-weight: 300;
  font-variation-settings: "SOFT" 20, "WONK" 1;
  line-height: 1;
  letter-spacing: -0.02em;
  margin: 0 0 1.75rem;
  max-width: 20ch;
}

.hero h1 em {
  font-style: italic;
  color: var(--crimson);
}

.hero-meta {
  margin-top: 2.5rem;
  font-family: var(--mono);
  font-size: 0.8125rem;
  line-height: 2;
  color: var(--muted);
}

.hero-meta strong {
  color: var(--ink);
  font-weight: 500;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  margin-top: 1rem;
}

.card {
  background: var(--paper);
  padding: 2rem 1.75rem 2.25rem;
  text-decoration: none;
  display: block;
  transition: background 0.25s;
}

.card:hover { background: var(--paper-deep); }

.card h3 {
  font-size: 1.4rem;
  font-weight: 400;
  margin: 0 0 0.6rem;
}

.card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.card .arrow {
  display: block;
  margin-top: 1.25rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--crimson);
}

/* --- Projects ledger ------------------------------------------------------ */

.page-head {
  padding: clamp(3rem, 8vw, 5.5rem) 0 clamp(2rem, 5vw, 3.5rem);
  border-bottom: 2px solid var(--ink);
}

.page-head h1 {
  font-size: clamp(2.5rem, 7vw, 4.75rem);
  font-weight: 300;
  font-variation-settings: "SOFT" 20, "WONK" 1;
  line-height: 1;
  letter-spacing: -0.02em;
  margin: 0 0 1.5rem;
}

.year {
  display: grid;
  grid-template-columns: 8rem 1fr;
  gap: 0 clamp(1.5rem, 4vw, 4rem);
  padding: clamp(2rem, 5vw, 3.5rem) 0;
  border-bottom: 1px solid var(--rule);
}

.year > h2 {
  position: sticky;
  top: 2rem;
  align-self: start;
  margin: 0;
  font-family: var(--mono);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--crimson);
}

.year > h2 span {
  display: block;
  margin-top: 0.4rem;
  color: var(--muted);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
}

.year ol {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: proj;
}

.year li {
  counter-increment: proj;
  border-top: 1px solid var(--rule);
}

.year li:first-child { border-top: 0; }

.year a,
.year .unlinked {
  display: flex;
  align-items: baseline;
  gap: 1.25rem;
  padding: 1.15rem 0.75rem 1.15rem 0;
  text-decoration: none;
  transition: padding-left 0.25s ease, background 0.25s;
}

.year a::before,
.year .unlinked::before {
  content: counter(proj, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted);
  flex: none;
  width: 2rem;
  padding-top: 0.35rem;
}

.year .title {
  font-size: clamp(1.25rem, 2.6vw, 1.75rem);
  line-height: 1.25;
  flex: 1 1 auto;
}

.year a:hover {
  padding-left: 0.9rem;
  background: var(--paper-deep);
}

.year a:hover .title { color: var(--crimson); }

.year a .visit {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--crimson);
  flex: none;
  opacity: 0;
  transform: translateX(-0.4rem);
  transition: opacity 0.25s, transform 0.25s;
}

.year a:hover .visit,
.year a:focus-visible .visit {
  opacity: 1;
  transform: translateX(0);
}

.unlinked .title { color: var(--muted); }

.unlinked .note {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  flex: none;
}

/* --- Course description --------------------------------------------------- */

.prose {
  max-width: 66ch;
  padding-bottom: clamp(3rem, 7vw, 5rem);
}

.prose p {
  margin: 0 0 1.15em;
  color: var(--ink-soft);
  font-size: 1.05rem;
  line-height: 1.7;
}

.prose p:first-child {
  font-size: 1.3rem;
  line-height: 1.55;
  color: var(--ink);
}

.prose p:last-child {
  margin-bottom: 0;
  font-size: 0.9rem;
  color: var(--muted);
}

/* --- Footer --------------------------------------------------------------- */

.colophon {
  border-top: 1px solid var(--rule);
  padding: 2.5rem var(--gutter) 3.5rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  line-height: 2;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 2.5rem;
  justify-content: space-between;
}

.colophon a { color: var(--ink-soft); }

/* --- Entrance animation --------------------------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(0.9rem);
  animation: rise 0.7s cubic-bezier(0.2, 0.7, 0.3, 1) forwards;
}

.reveal:nth-child(2) { animation-delay: 0.08s; }
.reveal:nth-child(3) { animation-delay: 0.16s; }
.reveal:nth-child(4) { animation-delay: 0.24s; }

@keyframes rise {
  to { opacity: 1; transform: none; }
}

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

/* --- Small screens -------------------------------------------------------- */

@media (max-width: 44rem) {
  .year {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
  .year > h2 { position: static; }
  .year a .visit { display: none; }
}

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