/* nunorc.github.io — site styles */

/* ---------- tokens ---------- */

/* One palette, not two. Every colour is declared once with a plain fallback
   followed by light-dark(); browsers without light-dark() keep the light
   value, everything else resolves against the root color-scheme below.
   Ratios in comments are against the surface the value is used on. */

:root {
  color-scheme: light dark;

  --bg: #f4f5f6;
  --bg: light-dark(#f4f5f6, #121416);
  --surface: #ffffff;
  --surface: light-dark(#ffffff, #1a1d20);
  --border: #e4e7e9;
  --border: light-dark(#e4e7e9, #2b2f33);
  --text: #1f2225;                                    /* 14.6:1 */
  --text: light-dark(#1f2225, #e6e8ea);
  --text-dim: #5b636a;                                /* 6.1:1 */
  --text-dim: light-dark(#5b636a, #9aa2a9);

  /* --accent is a fill, --accent-text is the accent used as text on a
     surface: an orange bright enough to read as orange as a fill does not
     reach 4.5:1 against white as text. */
  --accent: #ffa726;                                  /* dark text on top -> 8.2:1 */
  --accent-text: #c2410c;                             /* 5.2:1 */
  --accent-text: light-dark(#c2410c, #ffa726);
  --accent-soft: rgba(194, 65, 12, 0.12);
  --accent-soft: light-dark(rgba(194, 65, 12, 0.12), rgba(255, 167, 38, 0.14));
  --on-accent: #1f2225;
  --on-accent: light-dark(#1f2225, #1a1d20);

  --nav-bg: #37474f;
  --nav-bg: light-dark(#37474f, #16191c);
  --nav-text: #eceff1;                                /* 8.4:1 */
  --nav-text: light-dark(#eceff1, #e6e8ea);

  --card: #37474f;
  --card: light-dark(#37474f, #263238);
  --card-2: #313f47;
  --card-2: light-dark(#313f47, #222c31);
  --card-text: #ffffff;                               /* 7.2:1 */
  --card-dim: #d9dee0;                                /* 7.1:1 */
  --card-link: #ffa726;                               /* 5.0:1 */
  --card-meta: #cfd8dc;                               /* 6.7:1 */
  --card-meta: light-dark(#cfd8dc, #b0bec5);
  --card-border: rgba(255, 255, 255, 0.12);

  --tag: #0277bd;                                     /* white on top -> 4.8:1 */
  --tag-text: #ffffff;

  --radius: 14px;
  --radius-sm: 8px;
  --radius-tag: 4px;

  --e1: 0 1px 2px light-dark(rgba(16, 24, 32, 0.08), rgba(0, 0, 0, 0.5));
  --e2: 0 2px 4px -2px light-dark(rgba(16, 24, 32, 0.10), rgba(0, 0, 0, 0.45)),
    0 6px 12px -4px light-dark(rgba(16, 24, 32, 0.10), rgba(0, 0, 0, 0.45));
  --e3: 0 4px 8px -4px light-dark(rgba(16, 24, 32, 0.12), rgba(0, 0, 0, 0.5)),
    0 14px 28px -10px light-dark(rgba(16, 24, 32, 0.20), rgba(0, 0, 0, 0.55));

  --nav-h: 60px;
  --content-max: 1120px;

  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
}

/* The toggle writes data-theme; forcing color-scheme re-resolves every
   light-dark() above, so no palette is repeated. */
:root[data-theme="light"] {
  color-scheme: light;
}

:root[data-theme="dark"] {
  color-scheme: dark;
}

/* ---------- base ---------- */

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--accent-text);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 3px;
  border-radius: 2px;
}

h1,
h2,
h3 {
  margin: 0;
  font-weight: 500;
  line-height: 1.25;
  text-wrap: balance;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 50%;
  top: 0;
  transform: translate(-50%, -110%);
  z-index: 100;
  padding: 0.6rem 1.1rem;
  background: var(--accent);
  color: var(--on-accent);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  font-weight: 500;
}

.skip-link:focus {
  transform: translate(-50%, 0);
}

.icon {
  width: 1em;
  height: 1em;
  fill: currentColor;
  flex: none;
}

.container {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

/* ---------- header / nav ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--nav-bg);
  color: var(--nav-text);
  box-shadow: var(--e2);
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-height: var(--nav-h);
}

.nav a {
  color: var(--nav-text);
}

.nav-brand {
  font-weight: 600;
  letter-spacing: 0.01em;
  margin-right: auto;
  padding: 0.4rem 0;
}

.nav-brand:hover {
  text-decoration: none;
  color: #fff;
}

/* Links first, then the theme button, regardless of DOM order — on small
   screens the buttons stay on the bar and the list drops below it. */
.nav-list {
  order: 2;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.theme-toggle {
  order: 3;
}

.nav-list a {
  display: block;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  opacity: 0.9;
}

.nav-list a:hover {
  background: rgba(255, 255, 255, 0.1);
  text-decoration: none;
  opacity: 1;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  color: inherit;
  font-size: 22px;
  cursor: pointer;
}

.icon-btn:hover {
  background: rgba(255, 255, 255, 0.12);
}

.nav-toggle {
  display: none;
}

/* The toggle shows the theme it would switch you to: moon while light,
   sun while dark. The explicit [data-theme] rules come last so a stored
   choice beats the system preference in both directions. */
.theme-toggle .icon-sun {
  display: none;
}

.theme-toggle .icon-moon {
  display: block;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-moon {
    display: none;
  }
  :root:not([data-theme="light"]) .theme-toggle .icon-sun {
    display: block;
  }
}

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

:root[data-theme="dark"] .theme-toggle .icon-sun {
  display: block;
}

:root[data-theme="light"] .theme-toggle .icon-sun {
  display: none;
}

:root[data-theme="light"] .theme-toggle .icon-moon {
  display: block;
}

@media (max-width: 720px) {
  .nav-toggle {
    display: inline-flex;
    order: 3;
  }

  .theme-toggle {
    order: 2;
  }

  .nav-list {
    order: 4;
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-bottom: 0.5rem;
  }

  .nav-list.is-open {
    display: flex;
  }

  .nav-list a {
    padding: 0.7rem 0.75rem;
  }

  .nav {
    flex-wrap: wrap;
  }
}

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

.panel {
  background: var(--surface);
  border-top: 1px solid var(--border);
}

/* --accent, not --accent-text, to match the buttons. On white that is
   1.9:1, below the 3:1 WCAG AA floor for large text. */
.section-title {
  color: var(--accent);
  font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2rem);
  font-weight: 400;
  padding-top: 2.75rem;
  padding-bottom: 1.5rem;
  scroll-margin-top: var(--nav-h);
}

.section-body {
  padding-bottom: 3rem;
}

#about {
  scroll-margin-top: var(--nav-h);
}

/* ---------- hero ---------- */

.hero {
  /* > 62px, the avatar's negative margin, so it clears the sticky header */
  padding: 5rem 0 2.5rem;
}

.hero-card {
  /* 640 packs the eight tags as an even 4 + 4; narrower leaves a ragged
     4 + 3 + 1 that is taller despite the smaller card. */
  max-width: 640px;
  margin-inline: auto;
  padding: 0 1.5rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--e3);
  text-align: center;
}

.hero-avatar {
  width: 124px;
  height: 124px;
  margin: -62px auto 0.7rem;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--surface);
  box-shadow: var(--e2);
}

.hero-name {
  font-size: clamp(1.25rem, 1.1rem + 0.8vw, 1.6rem);
  font-weight: 500;
  letter-spacing: -0.01em;
}

.hero-role {
  margin: 0.35rem 0 0;
  color: var(--text-dim);
  font-size: 0.95rem;
}

.rule {
  height: 1px;
  margin: 0.85rem 0;
  background: var(--border);
  border: 0;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.3rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.tag {
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-tag);
  background: var(--tag);
  color: var(--tag-text);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.social {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.15rem;
}

.social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  color: var(--text-dim);
  font-size: 18px;
  transition: color 0.15s, background-color 0.15s;
}

.social a:hover {
  color: var(--accent-text);
  background: var(--accent-soft);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
  margin-top: 1rem;
}

.btn {
  flex: 1 1 140px;
  max-width: 180px;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: var(--on-accent);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-align: center;
  box-shadow: var(--e1);
  transition: box-shadow 0.15s, transform 0.15s;
}

.btn:hover {
  text-decoration: none;
  box-shadow: var(--e2);
  transform: translateY(-1px);
}

/* ---------- card grid ---------- */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 1.5rem;
}

.grid-compact {
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}

.card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--card);
  color: var(--card-text);
  border-radius: var(--radius);
  box-shadow: var(--e2);
  transition: box-shadow 0.18s, transform 0.18s;
}

.card:hover {
  box-shadow: var(--e3);
  transform: translateY(-2px);
}

.card-media {
  position: relative;
  aspect-ratio: 16 / 10;
  background: var(--card-2);
}

.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Scrim keeps the overlaid title readable on light photographs. */
.card-media::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 60%;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.75), transparent);
  pointer-events: none;
}

.card-media h3 {
  position: absolute;
  left: 1.25rem;
  right: 1.25rem;
  bottom: 0.9rem;
  z-index: 1;
  font-size: 1.35rem;
  font-weight: 400;
  color: #fff;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}

.card-body {
  flex: 1;
  padding: 1.1rem 1.25rem;
}

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

.card-title {
  flex: 1;
  padding: 1.35rem 1.25rem 0.6rem;
  font-size: 1.2rem;
  font-weight: 400;
}

.card-foot {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1.25rem;
  border-top: 1px solid var(--card-border);
  min-height: 52px;
}

.card-foot a {
  color: var(--card-link);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.card-foot .meta {
  margin-left: auto;
  color: var(--card-meta);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-align: right;
}

.cert {
  display: inline-flex;
  align-items: center;
  font-size: 20px;
}

/* An unlinked credential: shown, but not clickable. */
.cert-none {
  color: var(--card-meta);
}

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

.site-footer {
  padding: 1.5rem 0;
  background: var(--accent);
  color: var(--on-accent);
  font-size: 0.85rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
}

.site-footer a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ---------- print ---------- */

@media print {
  .site-header,
  .skip-link,
  .actions,
  .social {
    display: none;
  }

  body {
    background: #fff;
    color: #000;
  }

  .card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #999;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}