/* Shama Williams - personal site
   Type: Geist + Geist Mono (self-hosted). One accent: cable orange.
   Radius rule: containers 14px, buttons and chips full pill.
   z-index scale: 10 sticky nav, 20 skip link. */

@font-face {
  font-family: "Geist";
  src: url("assets/fonts/geist-vf.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}
@font-face {
  font-family: "Geist Mono";
  src: url("assets/fonts/geist-mono-vf.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --bg: #f2f3f1;
  --surface: #e8eae7;
  --ink: #15181a;
  --muted: #555b5f;
  --line: rgb(21 24 26 / 0.14);
  --accent: #b8420d;
  --on-accent: #fbfbf9;
  --accent-tint: #f1dccf;
  --nav-h: 64px;
  --radius: 14px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --sans: "Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Geist Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #111416;
  --surface: #1b1f22;
  --ink: #e9ebe7;
  --muted: #a2a9ac;
  --line: rgb(233 235 231 / 0.15);
  --accent: #f0783c;
  --on-accent: #111416;
  --accent-tint: #3a2417;
  color-scheme: dark;
}

/* No-JS fallback: follow the system preference. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --bg: #111416;
    --surface: #1b1f22;
    --ink: #e9ebe7;
    --muted: #a2a9ac;
    --line: rgb(233 235 231 / 0.15);
    --accent: #f0783c;
    --on-accent: #111416;
    --accent-tint: #3a2417;
    color-scheme: dark;
  }
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 1rem);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, p, ul, figure { margin: 0; }
ul { padding: 0; list-style: none; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }

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

.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.icon { width: 1.25em; height: 1.25em; fill: currentColor; flex: none; }
.icon-lg { width: 2rem; height: 2rem; color: var(--accent); }

.wrap {
  width: 100%;
  max-width: 1240px;
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 3rem);
}

.skip {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 20;
  padding: 0.6rem 1rem;
  border-radius: 999px;
  background: var(--ink);
  color: var(--bg);
  text-decoration: none;
}
.skip:focus { top: 0.75rem; }

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.8rem 1.35rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font: inherit;
  font-weight: 500;
  line-height: 1.2;
  white-space: nowrap;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s var(--ease), background-color 0.2s, border-color 0.2s, color 0.2s;
}
.btn:active { transform: translateY(1px) scale(0.98); }
.btn-sm { padding: 0.55rem 1rem; font-size: 0.9375rem; }

.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-primary:hover { background: color-mix(in srgb, var(--accent) 86%, var(--ink)); }

.btn-ghost { border-color: var(--line); color: var(--ink); }
.btn-ghost:hover { border-color: var(--ink); }

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  transition: border-color 0.2s, transform 0.2s var(--ease);
}
.icon-btn:hover { border-color: var(--ink); }
.icon-btn:active { transform: scale(0.96); }

/* ---------- Nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  height: var(--nav-h);
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  height: 100%;
}
.wordmark {
  font-weight: 600;
  letter-spacing: -0.02em;
  text-decoration: none;
  white-space: nowrap;
}
.nav-links { display: flex; gap: 2rem; }
.nav-links a {
  color: var(--muted);
  font-size: 0.9375rem;
  text-decoration: none;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--ink); }
.nav-actions { display: flex; align-items: center; gap: 0.6rem; }

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

.menu-btn { display: none; }
.menu-btn .icon-close, .menu-btn[aria-expanded="true"] .icon-open { display: none; }
.menu-btn[aria-expanded="true"] .icon-close { display: block; }

/* ---------- Hero ---------- */

.hero {
  display: grid;
  align-items: center;
  min-height: calc(100dvh - var(--nav-h));
  padding-block: clamp(2rem, 5vh, 4rem);
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 5rem);
}
.eyebrow {
  margin-bottom: 1.25rem;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
h1 {
  font-size: clamp(3.25rem, 8.4vw, 6.75rem);
  font-weight: 600;
  line-height: 0.95;
  letter-spacing: -0.05em;
}
.hero-sub {
  max-width: 34rem;
  margin-top: 1.75rem;
  color: var(--muted);
  font-size: clamp(1.0625rem, 1.5vw, 1.25rem);
  line-height: 1.55;
}
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}
.hero-media {
  aspect-ratio: 4 / 5;
  max-height: calc(100dvh - var(--nav-h) - 6rem);
  width: 100%;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--surface);
}
.hero-media img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- Sections ---------- */

.section { padding-block: clamp(4rem, 9vw, 7.5rem); }

.section-head { max-width: 54rem; margin-bottom: clamp(2rem, 4vw, 3.5rem); }
h2 {
  text-wrap: balance;
  font-size: clamp(2rem, 4.2vw, 3.25rem);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.035em;
}
.section-head p {
  max-width: 38rem;
  margin-top: 1rem;
  color: var(--muted);
  font-size: 1.125rem;
}
h3 {
  font-size: 1.1875rem;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.015em;
}
.mono-meta {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.875rem;
}

/* ---------- Experience ---------- */

.role {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  padding-block: clamp(2rem, 4vw, 3rem);
  border-top: 1px solid var(--line);
}
.role-meta { align-self: start; position: sticky; top: calc(var(--nav-h) + 1.5rem); }
.role-meta h3 { font-size: 1.5rem; letter-spacing: -0.025em; }
.role-org { margin-top: 0.35rem; }
.role-meta .mono-meta { margin-top: 0.75rem; }
.role-list { display: grid; gap: 1.1rem; max-width: 65ch; }
.role-list li { color: var(--muted); }
.role-list li:first-child { color: var(--ink); font-size: 1.25rem; line-height: 1.45; letter-spacing: -0.01em; }

/* ---------- Image band ---------- */

.band img {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  background: var(--surface);
}

/* ---------- Skills bento ---------- */

.bento {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1rem;
}
.cell {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: clamp(1.25rem, 2.2vw, 1.75rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.cell > p { color: var(--muted); max-width: 46ch; }
.cell-accent { background: var(--accent-tint); border-color: transparent; }
.cell-accent > p { color: var(--ink); }
.cell-ink { background: var(--ink); border-color: transparent; color: var(--bg); }
.cell-media { padding: 0; overflow: hidden; gap: 0; background: var(--surface); border-color: transparent; }
.cell-media img { width: 100%; flex: 1; min-height: 12rem; object-fit: cover; }
.cell-body { display: flex; flex-direction: column; gap: 1rem; padding: clamp(1.25rem, 2.2vw, 1.75rem); }

.c-help { grid-column: span 7; }
.c-os   { grid-column: span 5; }
.c-net  { grid-column: span 5; grid-row: span 2; }
.c-sec  { grid-column: span 7; }
.c-virt { grid-column: span 3; }
.c-web  { grid-column: span 4; }
.c-qa   { grid-column: span 6; }
.c-docs { grid-column: span 6; }

.chips { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.chips li {
  padding: 0.3rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.875rem;
  line-height: 1.4;
}
.chips .mono { font-family: var(--mono); font-size: 0.8125rem; }
.cell-accent .chips li { border-color: color-mix(in srgb, var(--ink) 22%, transparent); }
.cell-ink .chips li { border-color: color-mix(in srgb, var(--bg) 28%, transparent); }

/* ---------- Lab work tabs ---------- */

.lab {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  align-items: start;
}
.lab-tabs { display: grid; }
.lab-tab {
  padding: 1.1rem 0 1.1rem 1.1rem;
  border: 0;
  border-radius: 0;
  background: none;
  box-shadow: inset 2px 0 0 var(--line);
  color: var(--muted);
  font: inherit;
  font-size: clamp(1.25rem, 2vw, 1.625rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  text-align: left;
  cursor: pointer;
  transition: color 0.2s, box-shadow 0.2s;
}
.lab-tab:hover { color: var(--ink); }
.lab-tab[aria-selected="true"] { color: var(--ink); box-shadow: inset 3px 0 0 var(--accent); }

.lab-panels { display: grid; gap: 1rem; }
.lab-panel {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: clamp(1.5rem, 3vw, 2.5rem);
  border-radius: var(--radius);
  background: var(--surface);
}
.lab-panel p { font-size: clamp(1.1875rem, 1.9vw, 1.5rem); line-height: 1.4; letter-spacing: -0.015em; }
.lab-panel .chips { margin-top: auto; }

/* With JS the panels stack in one grid cell, so switching tabs never shifts the layout. */
.js .lab-tabs { display: grid; }
.js .lab-panels { gap: 0; }
.js .lab-panel { grid-area: 1 / 1; visibility: hidden; opacity: 0; }
.js .lab-panel.is-active { visibility: visible; opacity: 1; }
.js .lab-panel h3 { display: none; }
html:not(.js) .lab-tabs { display: none; }
html:not(.js) .lab { grid-template-columns: 1fr; }

/* ---------- Education ---------- */

.edu {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}
.edu-main h2 { margin-bottom: clamp(1.5rem, 3vw, 2.5rem); }
.degree { padding-block: 1.75rem; border-top: 1px solid var(--line); }
.degree h3 { max-width: 24ch; font-size: clamp(1.375rem, 2.4vw, 1.875rem); letter-spacing: -0.03em; line-height: 1.15; }
.degree h3 + p { margin-top: 0.6rem; }
.degree .mono-meta { margin-top: 0.25rem; }
.degree-note { max-width: 44ch; margin-top: 0.9rem; color: var(--muted); }
.edu-side { display: grid; gap: 1rem; }
.edu-side .cell { gap: 0.4rem; }
.edu-side .cell h3 { margin-top: 0.6rem; }
.edu-side .cell > p { color: var(--muted); }
.edu-side .cell-accent > p { color: var(--ink); }

/* ---------- Contact ---------- */

.contact { background: var(--surface); }
.contact h2 { max-width: 18ch; font-size: clamp(2.25rem, 5.4vw, 4.25rem); }
.contact-sub { max-width: 36rem; margin-top: 1.25rem; color: var(--muted); font-size: 1.125rem; }
.contact-lines {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 2.5rem;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}
.contact-lines li { display: flex; align-items: center; gap: 0.6rem; }
.contact-lines .icon { color: var(--muted); }
.contact-lines a { text-decoration-color: var(--line); text-underline-offset: 0.25em; transition: text-decoration-color 0.2s; }
.contact-lines a:hover { text-decoration-color: var(--accent); }

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

.footer { background: var(--surface); border-top: 1px solid var(--line); }
.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.5rem;
  color: var(--muted);
  font-size: 0.9375rem;
}
.footer a { text-underline-offset: 0.25em; }
.footer a:hover { color: var(--ink); }

/* ---------- Motion ----------
   Hero cascade sets reading order on load. Scroll reveals mark each block as it arrives.
   Panel fade confirms a tab change. All of it is off under reduced motion. */

@media (prefers-reduced-motion: no-preference) {
  .hero-copy > * {
    animation: rise 0.8s var(--ease) both;
    animation-delay: calc(var(--i, 0) * 90ms + 60ms);
  }
  .hero-media { animation: settle 1.1s var(--ease) both; }

  .js [data-reveal] {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  }
  .js [data-reveal].in { opacity: 1; transform: none; }

  .js .lab-panel { transition: opacity 0.35s var(--ease), visibility 0s linear 0.35s; }
  .js .lab-panel.is-active { transition: opacity 0.35s var(--ease) 0.05s, visibility 0s; }
}

@keyframes rise {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: none; }
}
@keyframes settle {
  from { opacity: 0; transform: scale(1.03); }
  to { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* ---------- Tablet and below ---------- */

@media (max-width: 960px) {
  .c-help, .c-os, .c-sec, .c-net, .c-qa, .c-docs { grid-column: span 12; }
  .c-net { grid-row: auto; }
  .c-virt, .c-web { grid-column: span 6; }
  .cell-media img { max-height: 16rem; }
}

@media (max-width: 767px) {
  .menu-btn { display: inline-grid; }
  .nav-links {
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    gap: 0;
    padding: 0.5rem clamp(1.25rem, 4vw, 3rem) 1rem;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 0.85rem 0; color: var(--ink); font-size: 1.0625rem; }
  html:not(.js) .menu-btn { display: none; }

  .hero { min-height: 0; padding-block: 2.5rem 3rem; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-media { aspect-ratio: 4 / 3; max-height: none; }

  .role { grid-template-columns: 1fr; gap: 1.25rem; }
  .role-meta { position: static; }

  .band img { aspect-ratio: 16 / 9; }

  .c-virt, .c-web { grid-column: span 12; }

  .lab { grid-template-columns: 1fr; }
  .js .lab-tabs {
    display: flex;
    gap: 0.5rem;
    margin-inline: calc(clamp(1.25rem, 4vw, 3rem) * -1);
    padding-inline: clamp(1.25rem, 4vw, 3rem);
    padding-block: 4px;
    overflow-x: auto;
    scroll-snap-type: x proximity;
    scrollbar-width: none;
  }
  .js .lab-tabs::-webkit-scrollbar { display: none; }
  .lab-tab {
    flex: none;
    padding: 0.55rem 1rem;
    border: 1px solid var(--line);
    border-radius: 999px;
    box-shadow: none;
    font-size: 0.9375rem;
    letter-spacing: 0;
    scroll-snap-align: start;
  }
  .lab-tab[aria-selected="true"] { border-color: var(--accent); box-shadow: none; }

  .edu { grid-template-columns: 1fr; }
}