/* ==========================================================================
   Bryce Hart — personal site
   Plain CSS, no build step. Edit and refresh.

   Layout of this file:
     1. Tokens (colors, type, spacing)  <- change these to restyle the whole site
     2. Reset & base
     3. Layout primitives
     4. Header / nav
     5. Hero
     6. Sections
     7. Project cards
     8. About / contact
     9. Footer
    10. Motion & print
   ========================================================================== */


/* 1. Tokens ---------------------------------------------------------------- */

:root {
  /* Earthy palette. Warm paper, umber ink, terracotta accent, moss for the
     status dot. Every hue is warm — nothing here is a neutral grey. */
  --bg:            #faf6f0;  /* warm paper   */
  --bg-alt:        #f2ebe1;  /* sand         */
  --surface:       #fffdfa;  /* raised card  */
  --border:        #e5dbcc;
  --border-strong: #cbbca7;

  --text:          #2c2418;  /* dark umber   */
  --text-muted:    #6b5d4b;  /* walnut       */
  --text-faint:    #786954;  /* driftwood — as light as it can go and still
                                clear 4.5:1 on --bg-alt, the worst case  */

  --accent:        #9a5b34;  /* terracotta   */
  --accent-hover:  #7d4726;  /* burnt sienna */

  --success:       #5b7a4a;  /* moss         */

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

  /* Spacing scale */
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-6: 1.5rem;
  --sp-8: 2rem;
  --sp-12: 3rem;
  --sp-16: 4rem;
  --sp-24: 6rem;

  --radius: 10px;
  --radius-sm: 6px;

  /* Shadows are tinted with the umber from --text, never pure black. Pure black
     over warm paper reads as grey smudge. */
  --shadow: 0 1px 2px rgb(44 36 24 / 0.05), 0 4px 16px -6px rgb(44 36 24 / 0.12);
  --shadow-lift: 0 2px 4px rgb(44 36 24 / 0.06), 0 12px 32px -10px rgb(44 36 24 / 0.20);

  --measure: 68ch;   /* comfortable reading width */
  --page: 1080px;    /* max content width */
}

/* The page ships one palette, always. Tell the browser so it doesn't render form
   controls and scrollbars in dark chrome for visitors whose OS is set to dark. */
:root { color-scheme: light; }


/* 2. Reset & base ---------------------------------------------------------- */

*, *::before, *::after { box-sizing: border-box; }

* { margin: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;   /* so anchors clear the sticky header */
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3 {
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 600;
  text-wrap: balance;
}

p { text-wrap: pretty; }

a { color: inherit; }

svg {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}

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

.skip-link {
  position: absolute;
  left: var(--sp-4);
  top: -100%;
  z-index: 100;
  padding: var(--sp-3) var(--sp-4);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  font-weight: 500;
  text-decoration: none;
}
.skip-link:focus { top: var(--sp-4); }


/* 3. Layout primitives ----------------------------------------------------- */

.wrap {
  width: 100%;
  max-width: var(--page);
  margin-inline: auto;
  padding-inline: var(--sp-6);
}

.wrap--narrow { max-width: 760px; }


/* 4. Header / nav ---------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}
.site-header[data-scrolled] { border-bottom-color: var(--border); }

.nav {
  max-width: var(--page);
  margin-inline: auto;
  padding: var(--sp-4) var(--sp-6);
  display: flex;
  align-items: center;
  gap: var(--sp-6);
}

.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  text-decoration: none;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-right: auto;
}

.nav__mark {
  display: grid;
  place-items: center;
  width: 1.9rem;
  height: 1.9rem;
  border-radius: var(--radius-sm);
  background: var(--text);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0;
}

.nav__links {
  display: flex;
  gap: var(--sp-6);
  list-style: none;
  padding: 0;
  font-size: 0.925rem;
}

.nav__links a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s ease;
}
.nav__links a:hover { color: var(--text); }

@media (max-width: 34rem) {
  .nav__name { display: none; }    /* the "BH" mark carries it on narrow screens */
  .nav__links { gap: var(--sp-4); }
}


/* 5. Hero ------------------------------------------------------------------ */

.hero {
  padding-block: clamp(var(--sp-16), 12vw, var(--sp-24)) var(--sp-16);
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  margin-bottom: var(--sp-6);
  padding: var(--sp-1) var(--sp-3) var(--sp-1) var(--sp-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text-muted);
  font-size: 0.8125rem;
  font-weight: 500;
}

.status-dot {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--success) 18%, transparent);
}

.hero__title {
  font-size: clamp(2.25rem, 6vw, 3.75rem);
  max-width: 20ch;
  margin-bottom: var(--sp-6);
}

.hero__title em {
  font-style: normal;
  color: var(--accent);
}

.hero__lede {
  max-width: 58ch;
  margin-bottom: var(--sp-8);
  color: var(--text-muted);
  font-size: clamp(1.05rem, 1.6vw, 1.1875rem);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-6);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  transition: transform 0.12s ease, box-shadow 0.15s ease,
              border-color 0.15s ease, background-color 0.15s ease;
}
.btn:hover {
  border-color: var(--text-faint);
  box-shadow: var(--shadow);
  transform: translateY(-1px);
}
.btn svg { width: 1rem; height: 1rem; }

.btn--primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn--primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}


/* 6. Sections -------------------------------------------------------------- */

.section { padding-block: var(--sp-16); }

.section--alt {
  background: var(--bg-alt);
  border-block: 1px solid var(--border);
}

.section__head { margin-bottom: var(--sp-12); }

.section__title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: var(--sp-3);
}

.section__sub {
  max-width: var(--measure);
  color: var(--text-muted);
}

.section__foot {
  margin-top: var(--sp-12);
  text-align: center;
}


/* 7. Project cards --------------------------------------------------------- */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 22rem), 1fr));
  gap: var(--sp-6);
}

/* --page caps the grid at two columns, so an odd card count would leave the
   last one stranded at half width. Let it take the whole row instead. */
.grid > .card:last-child:nth-child(odd) { grid-column: 1 / -1; }

.card {
  display: flex;
  flex-direction: column;
  padding: var(--sp-6);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  transition: transform 0.15s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.card:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-lift);
}

.card__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--sp-4);
  margin-bottom: var(--sp-3);
}

.card__title { font-size: 1.1875rem; }

.card__year {
  flex-shrink: 0;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.card__body {
  margin-bottom: var(--sp-6);
  color: var(--text-muted);
  font-size: 0.9375rem;
}

.card__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-6);
  margin-top: auto;         /* pins links to the bottom of every card */
  padding-top: var(--sp-4);
  border-top: 1px solid var(--border);
}

.link {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  color: var(--accent);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
}
.link:hover { color: var(--accent-hover); }
.link:hover svg { transform: translate(1px, -1px); }
.link svg {
  width: 0.875rem;
  height: 0.875rem;
  transition: transform 0.15s ease;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-bottom: var(--sp-4);
  padding: 0;
  list-style: none;
}

.tags li {
  padding: 0.15rem var(--sp-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-alt);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.tags--lg li {
  padding: var(--sp-1) var(--sp-3);
  background: var(--surface);
  font-size: 0.8125rem;
}


/* 8. About / contact ------------------------------------------------------- */

.prose {
  max-width: var(--measure);
  color: var(--text-muted);
  font-size: 1.0625rem;
}
.prose p + p { margin-top: var(--sp-4); }

.toolbox { margin-top: var(--sp-12); }

.toolbox__title {
  margin-bottom: var(--sp-4);
  color: var(--text-faint);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.contact {
  display: grid;
  gap: var(--sp-3);
  padding: 0;
  list-style: none;
}

.contact__item {
  display: flex;
  align-items: baseline;
  gap: var(--sp-4);
  padding: var(--sp-4) var(--sp-6);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  text-decoration: none;
  transition: border-color 0.15s ease, transform 0.12s ease;
}
.contact__item:hover {
  border-color: var(--border-strong);
  transform: translateX(2px);
}

.contact__label {
  flex-shrink: 0;
  width: 5.5rem;
  color: var(--text-faint);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.contact__value {
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  overflow-wrap: anywhere;
}

@media (max-width: 30rem) {
  .contact__item { flex-direction: column; gap: var(--sp-1); }
  .contact__label { width: auto; }
}


/* 9. Footer ---------------------------------------------------------------- */

.site-footer {
  padding-block: var(--sp-8);
  border-top: 1px solid var(--border);
  color: var(--text-faint);
  font-size: 0.875rem;
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-4);
  justify-content: space-between;
}

.site-footer__meta { font-family: var(--font-mono); font-size: 0.8125rem; }


/* 10. Motion & print ------------------------------------------------------- */

/* Sections ease in as you scroll. main.js adds .is-visible via IntersectionObserver;
   without JS the .reveal class is never applied, so content stays visible. */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

@media print {
  .site-header, .hero__actions { display: none; }
  body { background: #fff; color: #000; }
  .card { break-inside: avoid; border: 1px solid #ccc; }
}