/* ==========================================================================
   nordheimlarssen.no  ::  "Phosphor Field" design system
   A terminal idiom built as a real design system: Linear's restraint,
   Rauno's craft, Brittany Chiang's IA. Not CRT cosplay.

   Fonts:  JetBrains Mono (structure/brand)  +  IBM Plex Sans (prose only)
   Accent: teal #5ED3C4, rationed to ONE signal per view.
   ========================================================================== */

/* ---------- TOKENS ---------- */
:root {
  /* Core palette (locked) */
  --bg:        #0D1011;   /* canvas */
  --text:      #E6E7E8;   /* primary text */
  --dim:       #828B8F;   /* metadata workhorse */
  --accent:    #5ED3C4;   /* teal, the only accent */

  /* Elevation scale off the canvas (Linear-style, inset 1px borders) */
  --elev-0:    #0D1011;   /* canvas */
  --elev-1:    #121617;   /* card */
  --elev-2:    #171C1E;   /* card hover */
  --elev-3:    #1C2325;   /* raised / table header */

  /* Hairlines and borders */
  --hairline:  #1E2426;   /* faint structural rules */
  --border:    #283032;   /* visible 1px inset border */
  --border-hi: #3A4447;   /* hover border, pre-teal */

  /* Accent tints (kept low so teal stays a signal) */
  --accent-dim:  #2A4744; /* teal at rest on fills */
  --accent-glow: rgba(94, 211, 196, 0.14);

  /* Type */
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
  --sans: "IBM Plex Sans", system-ui, sans-serif; /* prose only; system-ui is a hard fallback */

  /* Scale */
  --maxw: 1080px;
  --gutter: clamp(20px, 5vw, 64px);

  /* Motion */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur:  140ms;

  --focus: #5ED3C4;
}

/* ---------- RESET ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  font-size: 16px;
  line-height: 1.6;
  font-feature-settings: "tnum" 0;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, p, ul, dl, figure { margin: 0; }
ul { list-style: none; padding: 0; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }

/* ---------- ACCESSIBILITY ---------- */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: 12px; top: -48px;
  background: var(--elev-2); color: var(--text);
  border: 1px solid var(--border);
  padding: 8px 14px; z-index: 100;
  font-family: var(--mono); font-size: 0.8rem;
  transition: top var(--dur) var(--ease);
}
.skip-link:focus { top: 12px; }

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
  border-radius: 1px;
}

/* ---------- LAYOUT ---------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section {
  padding-block: clamp(56px, 9vw, 104px);
  border-top: 1px solid var(--hairline);
}
.section:first-of-type { border-top: 0; }

/* ---------- HEADER / NAV ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(13, 16, 17, 0.82);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--hairline);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 60px;
}
.brand {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  display: inline-flex; align-items: baseline;
}
.brand-prompt { color: var(--dim); }
.brand-name { color: var(--text); }
.brand:hover .brand-name { color: var(--accent); }

.nav ul {
  display: flex;
  gap: clamp(14px, 2.5vw, 30px);
}
.nav a {
  position: relative;
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.01em;
  color: var(--dim);
  padding: 6px 2px;
  transition: color var(--dur) var(--ease);
}
.nav a::before {
  content: "";
  position: absolute; left: -11px; top: 50%;
  transform: translateY(-50%);
  color: var(--accent);
  opacity: 0;
}
.nav a:hover { color: var(--text); }
/* Single caret marks the one active nav item */
.nav a.is-active { color: var(--accent); }
.nav a.is-active::before {
  content: "\203A"; /* › caret */
  opacity: 1;
  font-weight: 700;
}

/* ---------- SECTION HEADS ---------- */
.section-head {
  display: flex; align-items: center; gap: 16px;
  margin-bottom: clamp(28px, 4vw, 44px);
}
.section-index {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--accent);
  font-feature-settings: "tnum" 1;
  letter-spacing: 0.08em;
}
.section-title {
  font-family: var(--mono);
  font-weight: 500;
  font-size: clamp(1.05rem, 2.4vw, 1.3rem);
  letter-spacing: 0.01em;
  color: var(--text);
  white-space: nowrap;
}
.section-title::before { content: "// "; color: var(--dim); font-weight: 400; }
.rule {
  flex: 1;
  height: 1px;
  background: var(--hairline);
  transform-origin: left center;
}

/* ---------- HERO ---------- */
.hero { padding-block: clamp(72px, 16vh, 150px); }
.kicker {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--dim);
  margin-bottom: 18px;
  letter-spacing: 0.02em;
}
.prompt { color: var(--dim); margin-right: 8px; }
.hero-name {
  font-family: var(--mono);
  font-weight: 700;
  font-size: clamp(2rem, 6.4vw, 3.7rem);
  line-height: 1.04;
  letter-spacing: -0.01em;
  color: var(--text);
  margin-bottom: 14px;
}
.hero-identity {
  font-family: var(--mono);
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  color: var(--dim);
  letter-spacing: 0.01em;
  margin-bottom: 28px;
}
.hero-tagline {
  font-family: var(--sans);
  font-size: clamp(1.15rem, 3.2vw, 1.7rem);
  line-height: 1.35;
  color: var(--text);
  max-width: 24ch;
  margin-bottom: 40px;
}
.now-line {
  display: inline-flex; align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--dim);
  border: 1px solid var(--border);
  background: var(--elev-1);
  border-radius: 2px;
  padding: 8px 14px;
}
.now-label {
  color: var(--dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.72rem;
}
.now-text { color: var(--dim); }
.status-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 var(--accent-glow);
  flex: 0 0 auto;
}

/* ---------- PROSE ---------- */
.prose {
  font-family: var(--sans);
  color: var(--text);
  max-width: 64ch;
}
.prose p + p { margin-top: 1.15em; }
.prose.about p { color: #cfd2d3; }
.lede {
  font-size: 1.05rem;
  color: var(--dim);
  margin-bottom: 28px;
  max-width: 60ch;
}

/* ---------- PROJECT CARDS ---------- */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 20px;
}
.card {
  background: var(--elev-1);
  border: 1px solid var(--border);
  border-radius: 3px;
  transition: border-color var(--dur) var(--ease),
              background-color var(--dur) var(--ease),
              transform var(--dur) var(--ease);
}
.card > article {
  display: flex; flex-direction: column;
  height: 100%;
  padding: 22px 22px 18px;
}
.card:hover,
.card:focus-within {
  border-color: var(--accent);
  background: var(--elev-2);
  transform: translateY(-2px);
}
.card-top {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}
.card-title {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.01em;
}
.card-desc {
  font-family: var(--sans);
  font-size: 0.94rem;
  line-height: 1.55;
  color: #c4c8c9;
  margin-bottom: 18px;
}
.card-desc a { color: var(--accent); }
.card-desc a:hover { text-decoration: underline; }
.card-meta a { color: var(--accent); }
.card-meta a:hover { text-decoration: underline; }
.card-meta {
  display: grid; gap: 8px;
  margin-bottom: 18px;
  border-top: 1px solid var(--hairline);
  padding-top: 14px;
}
.card-meta > div {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
}
.card-meta dt {
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--dim);
}
.card-meta dd {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--text);
  overflow-wrap: anywhere;
}
.card-links {
  margin-top: auto;
  padding-top: 4px;
}
.card-links a {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--dim);
  display: inline-flex; align-items: center; gap: 6px;
  transition: color var(--dur) var(--ease);
}
.card-links a:hover { color: var(--accent); }
.arrow { transition: transform var(--dur) var(--ease); }
.card-links a:hover .arrow { transform: translate(2px, -2px); }

/* ---------- STATUS BADGES ---------- */
.badge {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--dim);
  white-space: nowrap;
  flex: 0 0 auto;
}
/* Dot badge: same shape as badge-live, but dim. Teal is reserved for the
   single most important project (Riposte) so the projects view has one signal. */
.badge-dot {
  color: var(--dim);
  display: inline-flex; align-items: center; gap: 6px;
}
.badge-dot::before {
  content: "";
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--dim);
}
/* The single teal signal in the projects view: Riposte's in-dev dot. */
.badge-live {
  color: var(--accent);
  display: inline-flex; align-items: center; gap: 6px;
}
.badge-live::before {
  content: "";
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
}

/* ---------- GRADE BADGES ---------- */
/* Dim by default so a wall of grades does not flood the view with teal.
   Teal is rationed to a single signal badge via .grade-badge.is-signal. */
.grade-badge {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.72rem;
  color: var(--dim);
  border: 1px solid var(--border);
  background: transparent;
  border-radius: 2px;
  padding: 1px 7px;
  display: inline-block;
  min-width: 22px;
  text-align: center;
  font-feature-settings: "tnum" 1;
}
/* The one teal grade: the flagship thesis A. */
.grade-badge.is-signal {
  color: var(--accent);
  border-color: var(--accent-dim);
  background: rgba(94, 211, 196, 0.07);
}

/* ---------- SPEC TABLES ---------- */
.table-wrap { overflow-x: auto; }
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 0.86rem;
  font-feature-settings: "tnum" 1; /* tabular figures */
}
.spec-table caption { text-align: left; }
.spec-table th {
  text-align: left;
  font-weight: 500;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--dim);
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--elev-1);
}
.spec-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--hairline);
  color: var(--text);
  vertical-align: middle;
}
.spec-table tbody tr {
  transition: background-color var(--dur) var(--ease);
}
.spec-table tbody tr:hover { background: var(--elev-1); }
.spec-table .num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.spec-table th.num { text-align: right; }
.result-win { color: var(--accent); font-weight: 700; }
.muted { color: var(--dim); }

/* ---------- ACADEMICS ---------- */
.academics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: clamp(24px, 4vw, 48px);
}
.acad-title {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.98rem;
  margin-bottom: 4px;
}
.acad-sub {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--dim);
  margin-bottom: 16px;
}
.grades { border: 1px solid var(--border); border-radius: 3px; overflow: hidden; }
.grades th:first-child, .grades td:first-child { width: 75%; }
.acad-note {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--dim);
  margin-top: 28px;
  letter-spacing: 0.01em;
}
.acad-note::before { content: "# "; color: var(--border-hi); }

/* ---------- CONTACT ---------- */
.contact-list {
  display: grid;
  gap: 2px;
  max-width: 620px;
}
.contact-list li {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--hairline);
}
.contact-key {
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--dim);
}
.contact-list a {
  font-family: var(--mono);
  font-size: 0.92rem;
  color: var(--text);
  width: fit-content;
  max-width: 100%;
  overflow-wrap: anywhere;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.contact-list a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ---------- FOOTER ---------- */
.site-footer {
  border-top: 1px solid var(--hairline);
  padding-block: 28px;
}
.footer-inner {
  display: flex; flex-wrap: wrap; gap: 8px 24px;
  justify-content: space-between;
}
.colophon {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--dim);
}

/* ---------- MOTION (restrained, meaningful) ---------- */
/* Reveal animation only when JS is present. Without JS (or if the observer
   never fires), content stays fully visible: the .js class is set by main.js. */
.js .reveal {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 420ms var(--ease), transform 420ms var(--ease);
  will-change: opacity, transform;
}
.reveal.in-view {
  opacity: 1;
  transform: none;
}

/* Hairline rules draw in on scroll (JS-gated, full-width without JS) */
.js .rule {
  transform: scaleX(0);
  transition: transform 520ms var(--ease);
}
.js .section-head.in-view .rule { transform: scaleX(1); }

/* The status dot pulses once when revealed */
.now-line.in-view .status-dot {
  animation: pulse-once 1100ms var(--ease) 1;
}
@keyframes pulse-once {
  0%   { box-shadow: 0 0 0 0 var(--accent-glow); }
  60%  { box-shadow: 0 0 0 9px rgba(94, 211, 196, 0); }
  100% { box-shadow: 0 0 0 0 rgba(94, 211, 196, 0); }
}

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .rule {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .now-line.in-view .status-dot { animation: none !important; }
  .arrow, .card { transition: none !important; }
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 560px) {
  .header-inner { height: 56px; }
  .nav ul { gap: 13px; }
  .nav a { font-size: 0.74rem; }
  .brand { font-size: 0.85rem; }
  .contact-list li { grid-template-columns: 80px minmax(0, 1fr); gap: 10px; }
  .card-meta > div { grid-template-columns: 48px minmax(0, 1fr); }
  .hero-tagline { max-width: none; }
}

@media (max-width: 380px) {
  .nav a { font-size: 0.68rem; }
}