/* Martijn van Berkum — personal site
   Cool, technical, document-grade identity.
   Archivo (grotesque) for display/body, Space Mono for labels & data.
   Single electric-indigo accent on cool neutrals. Light + dark. */

:root {
  --bg: #f3f4f6;
  --surface: #ffffff;
  --ink: #15171c;
  --body: #3a3f4a;
  --muted: #6b7280;
  --line: #e2e5ea;
  --line-strong: #cfd4dc;
  --accent: #2743e8;
  --accent-ink: #1a2fb0;
  --on-accent: #ffffff;
  --logo-chip: transparent;
  --logo-pad: 0;

  --wrap: 908px;
  --sans: "Archivo", system-ui, -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: "Space Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1013;
    --surface: #16181d;
    --ink: #f1f3f7;
    --body: #c3c8d2;
    --muted: #868d9a;
    --line: #23272f;
    --line-strong: #333944;
    --accent: #8593ff;
    --accent-ink: #a3adff;
    --on-accent: #0e1013;
    --logo-chip: #f4f5f7;
    --logo-pad: 7px 11px;
  }
}

:root[data-theme="light"] {
  --bg: #f3f4f6; --surface: #ffffff; --ink: #15171c; --body: #3a3f4a;
  --muted: #6b7280; --line: #e2e5ea; --line-strong: #cfd4dc;
  --accent: #2743e8; --accent-ink: #1a2fb0; --on-accent: #ffffff;
  --logo-chip: transparent; --logo-pad: 0;
}
:root[data-theme="dark"] {
  --bg: #0e1013; --surface: #16181d; --ink: #f1f3f7; --body: #c3c8d2;
  --muted: #868d9a; --line: #23272f; --line-strong: #333944;
  --accent: #8593ff; --accent-ink: #a3adff; --on-accent: #0e1013;
  --logo-chip: #f4f5f7; --logo-pad: 7px 11px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--body);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--accent); color: var(--on-accent); }
img { max-width: 100%; display: block; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: 24px;
}

/* --- Links --- */
a {
  color: var(--ink);
  text-decoration: none;
  background-image: linear-gradient(var(--accent), var(--accent));
  background-size: 0% 1.5px;
  background-position: 0 100%;
  background-repeat: no-repeat;
  transition: background-size 0.26s ease, color 0.18s ease;
}
a:hover { background-size: 100% 1.5px; color: var(--ink); }

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

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--ink); color: var(--bg);
  padding: 10px 16px; z-index: 10; background-image: none;
  font-family: var(--mono); font-size: 0.8rem;
}
.skip-link:focus { left: 12px; top: 12px; }

/* --- Hero --- */
.hero { padding-top: clamp(2.5rem, 5.5vw, 4.25rem); }
.hero__inner {
  display: grid;
  grid-template-columns: 1fr minmax(150px, 188px);
  gap: clamp(1.75rem, 5vw, 3.25rem);
  align-items: start;
}

.hero__role {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 1.35rem;
  font-family: var(--mono);
  font-size: 0.775rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.hero__sep { color: var(--accent); }

.hero__name {
  margin: 0;
  font-family: var(--sans);
  font-weight: 800;
  font-size: clamp(2.75rem, 7.5vw, 4.5rem);
  line-height: 0.98;
  letter-spacing: -0.035em;
  color: var(--ink);
  text-wrap: balance;
}

.hero__intro { margin-top: clamp(1.4rem, 3.5vw, 2rem); max-width: 62ch; }
.hero__intro p { margin: 0 0 1rem; }
.hero__intro p:last-child { margin-bottom: 0; }

.hero__photo { margin: 0; }
.hero__photo img {
  width: 100%;
  aspect-ratio: 337 / 412;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--line);
  filter: grayscale(0.25) contrast(1.02);
  transition: filter 0.5s ease;
}
.hero__photo img:hover { filter: grayscale(0); }

/* --- Sections --- */
.section { border-top: 1px solid var(--line); }
.section:first-child { margin-top: clamp(2rem, 5vw, 3.25rem); }
.section__inner {
  padding-block: clamp(2rem, 4.5vw, 3rem);
}

.section h2 {
  font-family: var(--sans);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.2vw, 1.95rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 0 0 1.15rem;
  text-wrap: balance;
}
.section h2::before {
  content: "";
  display: block;
  width: 26px;
  height: 3px;
  background: var(--accent);
  margin-bottom: 0.9rem;
}

.section p { margin: 0 0 1.1rem; max-width: 64ch; }
.section > .section__inner > p:last-child { margin-bottom: 0; }
.section strong { color: var(--ink); font-weight: 600; }

/* Generic content lists (skills in "Wat ik meebreng") */
.section ul:not(.entries) {
  list-style: none;
  margin: 0.5rem 0 0;
  padding: 0;
}
.section ul:not(.entries) > li {
  padding: 0.85rem 0;
  border-top: 1px solid var(--line);
  max-width: 66ch;
}
.section ul:not(.entries) > li:first-child { border-top: none; }

/* Skills list ("Wat ik meebreng") in two columns */
#wat-ik-meebreng ul:not(.entries) {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: clamp(1.75rem, 4vw, 3rem);
  margin-top: 0.75rem;
}
#wat-ik-meebreng ul:not(.entries) > li { max-width: none; }
#wat-ik-meebreng ul:not(.entries) > li:nth-child(2) { border-top: none; }

/* --- Entries (Investeringen / Eerder) as a two-column card grid --- */
.entries {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.entries--full { grid-template-columns: 1fr; }
.entry {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  padding: 1.15rem 1.3rem 1.3rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 9px;
}

.entry__logo {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  width: fit-content;
  min-height: 30px;
  background-color: var(--logo-chip);
  padding: var(--logo-pad);
  border-radius: 6px;
  background-image: none;
}
.entry__logo img {
  width: auto;
  height: auto;
  max-height: 30px;
  max-width: 180px;
  transition: transform 0.25s ease;
}
.entry__logo:hover img { transform: translateY(-1px); }
/* Compact near-square marks (e.g. Inuka) get more height to hold their weight */
.entry__logo--lg img { max-height: 54px; max-width: 200px; }

.entry__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem 0.65rem;
  margin-bottom: 0;
}
.entry__name {
  font-weight: 600;
  font-size: 1.075rem;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.entry__tag {
  font-family: var(--mono);
  font-size: 0.66rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  padding: 0.2em 0.5em;
  white-space: nowrap;
  transform: translateY(-1px);
}
.entry__desc {
  margin: 0;
  max-width: none;
  color: var(--body);
  font-size: 0.95rem;
  line-height: 1.58;
}

/* --- Contact --- */
#contact ul:not(.entries) {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.75rem;
}
#contact ul:not(.entries) > li { padding: 0; border: none; }
#contact ul:not(.entries) > li a {
  display: inline-flex;
  align-items: center;
  padding: 0.72rem 1.5rem;
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background-image: none;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
}
/* primary = first (E-mail) */
#contact ul:not(.entries) > li:first-child a {
  background: var(--accent);
  color: var(--on-accent);
  border: 1px solid var(--accent);
}
#contact ul:not(.entries) > li:first-child a:hover { background: var(--accent-ink); border-color: var(--accent-ink); transform: translateY(-1px); }
/* secondary = outline */
#contact ul:not(.entries) > li + li a {
  color: var(--ink);
  border: 1px solid var(--line-strong);
}
#contact ul:not(.entries) > li + li a:hover { border-color: var(--ink); transform: translateY(-1px); }

/* --- Footer --- */
.footer { border-top: 1px solid var(--line); padding-block: 2.5rem; }
.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
}
.footer p { margin: 0; color: var(--muted); font-size: 0.85rem; }

/* --- Responsive --- */
@media (max-width: 720px) {
  .entries { grid-template-columns: 1fr; }
  #wat-ik-meebreng ul:not(.entries) { grid-template-columns: 1fr; }
  #wat-ik-meebreng ul:not(.entries) > li:nth-child(2) { border-top: 1px solid var(--line); }
}

@media (max-width: 620px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__photo { order: -1; width: 124px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}