/*
  Joep van der Ham, portfolio/cv
  Vanilla CSS, geen framework, geen extra lettertype-download, geen JS voor
  layout of navigatie.

  Richting: donker, code-editor-achtige typografie (monospace koppen,
  genummerde sectie-labels zoals "01 // over mij"), en een klein "databestand"
  als los, illustratief kaartje naast de tekst. Nadrukkelijk NIET: de hele
  pagina-inhoud in een venster-kader stoppen. Het venster-motief is
  gereserveerd voor twee dingen: het databestand-kaartje en de code-preview
  bovenaan een projectkaart.
*/

:root {
  --bg: #0b0c18;
  --bg-elevated: #12142a;
  --bg-inset: #0e0f20;
  --border: #262a45;
  --border-soft: #1c1f38;
  --text: #e6e6f0;
  --text-muted: #9a9dbb;
  --accent: #8f8ff5;
  --accent-soft: rgb(143 143 245 / 12%);
  --focus-ring: #8f8ff5;

  /* alleen voor syntax-kleuring binnen code-/databestand-kaartjes */
  --syn-key: #c9cdfb;
  --syn-string: #7ee6a8;
  --syn-bool: #ffcb7d;
  --syn-comment: #6d7092;

  --radius: 12px;
  --radius-sm: 7px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Code", "Roboto Mono", Consolas, monospace;

  --content-width: 44rem;
  --wide-width: 68rem;
}

/* ---------- reset ---------- */

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

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

body {
  position: relative;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

/* subtiele, sterrenveld-achtige achtergrondtextuur. Puur CSS: geen
   afbeelding, geen canvas, geen JS, dus geen impact op laadtijd. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    radial-gradient(1px 1px at 10% 20%, rgb(230 230 240 / 35%), transparent),
    radial-gradient(1px 1px at 80% 10%, rgb(230 230 240 / 25%), transparent),
    radial-gradient(1.5px 1.5px at 60% 65%, rgb(230 230 240 / 30%), transparent),
    radial-gradient(1px 1px at 30% 80%, rgb(230 230 240 / 25%), transparent),
    radial-gradient(1px 1px at 90% 85%, rgb(230 230 240 / 20%), transparent),
    radial-gradient(1.5px 1.5px at 45% 35%, rgb(230 230 240 / 20%), transparent);
  background-repeat: repeat;
  background-size: 30rem 30rem;
}

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

ul {
  margin: 0;
  padding: 0;
}

a {
  color: var(--accent);
}

h1, h2, h3, p {
  margin: 0;
}

h1, h2 {
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: -0.02em;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

/* ---------- focus & skip link ---------- */

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 100;
  background: var(--text);
  color: var(--bg);
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-decoration: none;
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: 1rem;
}

/* ---------- layout helpers ---------- */

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

.wrap--wide {
  max-width: var(--wide-width);
}

section {
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
}

section + section {
  border-top: 1px solid var(--border-soft);
}

.section-head {
  margin-bottom: 1.75rem;
  max-width: 60ch;
}

.section-head h2 {
  font-size: clamp(1.5rem, 3.5vw, 2.1rem);
}

.section-head p {
  color: var(--text-muted);
  margin-top: 0.6rem;
}

/* numbered section eyebrow: "01 // over mij" */
.eyebrow-num {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.eyebrow-num__sep {
  color: var(--text-muted);
}

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

.site-header {
  border-bottom: 1px solid var(--border-soft);
  background: rgb(11 12 24 / 85%);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 50;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4rem;
  max-width: var(--wide-width);
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: 1rem;
}

.brand:hover {
  color: var(--text);
}

.brand__prompt {
  font-family: var(--font-mono);
  color: var(--accent);
  font-weight: 700;
}

.brand__name {
  font-family: var(--font-mono);
}

.nav-toggle {
  position: relative;
}

.nav-toggle summary {
  list-style: none;
  cursor: pointer;
  font-weight: 600;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.nav-toggle summary::-webkit-details-marker {
  display: none;
}

.nav-toggle[open] summary {
  border-color: var(--accent);
}

.nav-toggle nav {
  position: absolute;
  right: 0;
  top: calc(100% + 0.5rem);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.5rem;
  min-width: 12rem;
  box-shadow: 0 8px 24px rgb(0 0 0 / 35%);
}

.nav-toggle nav ul {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  list-style: none;
}

.nav-toggle nav a {
  display: block;
  padding: 0.55rem 0.75rem;
  border-radius: var(--radius-sm);
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
}

.nav-toggle nav a:hover,
.nav-toggle nav a:focus-visible {
  background: var(--accent-soft);
  color: var(--accent);
}

@media (min-width: 48rem) {
  .nav-toggle summary {
    display: none;
  }

  .nav-toggle nav {
    display: block !important;
    position: static;
    background: none;
    border: none;
    box-shadow: none;
    padding: 0;
  }

  .nav-toggle nav ul {
    flex-direction: row;
    gap: 0.25rem;
  }
}

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: transform 0.1s ease, box-shadow 0.15s ease;
}

.btn:active {
  transform: translateY(1px);
}

.btn--primary {
  background: var(--text);
  color: var(--bg);
}

.btn--primary:hover {
  opacity: 0.9;
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.btn--secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.btn--secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ---------- window chrome ---------- */
/* Gereserveerd voor twee dingen: het databestand-kaartje (.data-card) en de
   code-preview bovenaan een projectkaart (.pcard__banner--code). Wordt niet
   gebruikt om hele pagina-secties in te verpakken. */

.win-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.9rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-inset);
}

.win-dots {
  display: flex;
  gap: 0.35rem;
  flex-shrink: 0;
}

.win-dots i {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--border);
}

.win-path {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  overflow-wrap: anywhere;
}

/* blinking terminal-style cursor; freezes under reduced motion */
.cursor {
  display: inline-block;
  width: 0.5ch;
  margin-left: 0.15ch;
  background: currentColor;
  transform: translateY(0.1em);
}

.cursor::after {
  content: "\00a0";
}

@media (prefers-reduced-motion: no-preference) {
  .cursor {
    animation: blink 1.1s steps(1) infinite;
  }
}

@keyframes blink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

/* ---------- data card (json-achtig kaartje) ---------- */

.data-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  overflow: hidden;
  box-shadow: 0 20px 60px -20px rgb(0 0 0 / 50%);
}

.data-card pre {
  margin: 0;
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
}

.data-card code {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.7;
  white-space: pre;
}

.tok-key { color: var(--syn-key); }
.tok-string { color: var(--syn-string); }
.tok-bool { color: var(--syn-bool); }
.tok-punct { color: var(--text-muted); }

/* ---------- hero (home) ---------- */

.hero {
  padding-block: clamp(3rem, 10vh, 6rem);
}

.hero__grid {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

@media (min-width: 56rem) {
  .hero__grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 3rem;
  }
}

.hero__identity {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.hero h1 {
  font-size: clamp(1.9rem, 5vw, 3rem);
  line-height: 1.15;
  max-width: 16ch;
}

.hero__sub {
  margin-top: 1.1rem;
  color: var(--text-muted);
  font-size: clamp(1rem, 2vw, 1.15rem);
  max-width: 44ch;
}

.hero .btn-row {
  margin-top: 1.75rem;
}

/* ---------- skill tags ---------- */

.tag-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.3rem 0.75rem;
  color: var(--text);
}

/* ---------- cv: panels, skills & experience ---------- */

.panel {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  padding: 1.5rem;
}

.panel-title {
  font-family: var(--font-mono);
  font-size: 1.1rem;
}

@media (min-width: 40rem) {
  .panel {
    padding: 2rem;
  }
}

.skill-groups {
  display: grid;
  gap: 1.75rem;
}

.skill-group h3 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: 0.65rem;
}

.experience-list {
  display: grid;
  gap: 1.75rem;
}

.experience-item {
  display: grid;
  gap: 0.3rem;
}

.experience-item__top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  align-items: baseline;
}

.experience-item h3 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1.05rem;
}

.experience-item__dates {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.experience-item p {
  color: var(--text-muted);
}

.todo-inline {
  font-family: var(--font-mono);
  font-size: 0.85em;
  color: var(--accent);
  border-bottom: 1px dashed var(--accent);
}

/* ---------- education list ---------- */

.timeline {
  display: grid;
  gap: 1rem;
  border-left: 2px solid var(--border);
  padding-left: 1.25rem;
}

.timeline li {
  list-style: none;
}

.timeline strong {
  display: block;
  font-family: var(--font-sans);
}

.timeline span {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ---------- project cards ---------- */

.pcard {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  overflow: hidden;
}

.pcard + .pcard {
  margin-top: 2rem;
}

.pcard__banner {
  position: relative;
  border-bottom: 1px solid var(--border);
}

.pcard__banner--code {
  background: var(--bg-inset);
  padding: 2.75rem 1.5rem 1.25rem;
  overflow-x: auto;
}

.pcard__banner--code code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.7;
  white-space: pre;
}

.pcard__banner--placeholder {
  min-height: 8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  text-align: center;
  background-color: var(--bg-inset);
  background-image: repeating-linear-gradient(
    45deg,
    var(--accent-soft),
    var(--accent-soft) 10px,
    transparent 10px,
    transparent 20px
  );
}

.pcard__badge {
  position: absolute;
  top: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-muted);
}

.pcard__badge--left {
  left: 0.75rem;
}

.pcard__badge--right {
  right: 0.75rem;
}

.placeholder-visual__label {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.9rem;
  max-width: 30ch;
}

.pcard__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.6rem 1.25rem;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

.pcard__body {
  padding: 1.5rem;
}

@media (min-width: 40rem) {
  .pcard__body {
    padding: 2rem;
  }
}

.pcard__body h2 {
  font-size: clamp(1.35rem, 3vw, 1.7rem);
}

.pcard__subtitle {
  color: var(--text-muted);
  margin-top: 0.35rem;
}

.pcard__fields {
  margin-top: 1.5rem;
  display: grid;
  gap: 1.25rem;
}

.pcard__fields dt {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--accent);
}

.pcard__fields dd {
  margin: 0.3rem 0 0;
  color: var(--text-muted);
}

.pcard__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-soft);
}

/* content still to be delivered by the client (real text, not fake) */
.todo-block {
  border: 1px dashed var(--accent);
  background: var(--accent-soft);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  margin-top: 0.75rem;
}

.todo-block__tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--accent);
  display: block;
  margin-bottom: 0.4rem;
}

.todo-block p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.snippet-caption {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
  padding: 0 1.5rem 1.25rem;
}

/* ---------- about page ---------- */

.about-grid {
  display: grid;
  gap: 2.5rem;
  align-items: start;
}

@media (min-width: 56rem) {
  .about-grid {
    grid-template-columns: 1.2fr 0.8fr;
    gap: 3rem;
  }
}

.route {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-top: 1rem;
}

.route span[aria-hidden="true"] {
  color: var(--border);
}

.prose {
  max-width: 65ch;
  display: grid;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.prose p {
  color: var(--text-muted);
}

.prose a {
  color: var(--accent);
}

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

.site-footer {
  border-top: 1px solid var(--border-soft);
  padding-block: 3rem;
}

.site-footer h2 {
  font-size: 1.4rem;
}

.contact-list {
  list-style: none;
  margin-top: 1.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.contact-list a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
}

.contact-list a:hover,
.contact-list a:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
}

.contact-list__todo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1rem;
  border: 1px dashed var(--accent);
  border-radius: var(--radius-sm);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.site-footer__note {
  margin-top: 2rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ---------- print (cv page) ---------- */

@media print {
  .site-header,
  .site-footer,
  .btn-row,
  .win-bar,
  .eyebrow-num,
  body::before {
    display: none !important;
  }

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

  section + section {
    border-top: none;
  }

  .panel {
    border: none;
    background: none;
    padding: 0;
  }
}