/* ============================================================
   ANTOINE ESMAN — PORTFOLIO
   Theme: instrument panel. One accent (amber), one face (mono).
   ============================================================ */

:root {
  color-scheme: dark;

  /* color */
  --ink-0: #070b13;      /* page ground — abyss navy, not pure black */
  --ink-1: #0c1322;      /* raised panel */
  --ink-2: #111a2c;      /* card hover */
  --line: #1d2941;       /* hairline borders */
  --grid: rgba(151, 160, 179, 0.05);
  --text: #e9e4d6;       /* warm paper white */
  --muted: #97a0b3;
  --amber: #ffb45c;      /* action & signal */
  --amber-hi: #ffc27a;
  --amber-dim: rgba(255, 180, 92, 0.14);
  --cyan: #62d6c9;       /* data & telemetry only */

  /* type — mono for instrumentation, sans for sustained reading */
  --font-mono: ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas,
    "DejaVu Sans Mono", monospace;
  --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  --font: var(--font-mono);

  /* rhythm */
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --maxw: 1140px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
}

body {
  background: var(--ink-0);
  color: var(--text);
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* blueprint grid, fixed behind everything */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 120% 90% at 50% 0%, black 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 120% 90% at 50% 0%, black 30%, transparent 100%);
}

::selection { background: var(--amber); color: var(--ink-0); }

a { color: var(--amber); text-decoration: none; }
a:hover { color: var(--amber-hi); }

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

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  z-index: 100;
  background: var(--amber);
  color: var(--ink-0);
  padding: 0.5rem 1rem;
}
.skip-link:focus { left: 0; }

/* ================= NAV ================= */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 2rem;
  padding: 0.85rem var(--gutter);
  background: color-mix(in srgb, var(--ink-0) 82%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.95rem;
  color: var(--text);
  letter-spacing: 0.02em;
}
.nav-brand:hover { color: var(--amber); }

.nav-links {
  display: flex;
  gap: 1.4rem;
  margin-left: auto;
  font-size: 0.85rem;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-links::-webkit-scrollbar { display: none; }

.nav-links a {
  color: var(--muted);
  white-space: nowrap;
  padding: 0.2rem 0;
}
.nav-links a:hover, .nav-links a.is-active { color: var(--amber); }

/* ================= HERO ================= */

.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(3rem, 9vh, 6.5rem) var(--gutter) 4rem;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
  min-height: min(88vh, 900px);
}

.hero-copy,
.hero-rig {
  min-width: 0;
}

.eyebrow {
  font-size: 0.8rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.4rem;
}
.eyebrow::before { content: "// "; color: var(--amber); }

.hero-name {
  font-weight: 700;
  font-size: clamp(2.7rem, 6.5vw, 4.7rem);
  line-height: 1.04;
  letter-spacing: -0.035em;
  text-wrap: balance;
  margin-bottom: 1.6rem;
}

.hero-thesis {
  font-size: clamp(1.15rem, 2.2vw, 1.45rem);
  line-height: 1.4;
  font-weight: 500;
  margin-bottom: 1rem;
}
.hero-thesis em {
  color: var(--amber);
  font-style: italic;
}

.hero-sub {
  font-family: var(--font-sans);
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.65;
  max-width: 48ch;
  margin-bottom: 1.8rem;
}

.hero-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 2.2rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  color: var(--muted);
  border: 1px solid var(--line);
  padding: 0.38rem 0.75rem;
  border-radius: 999px;
  background: var(--ink-1);
}
.chip-ok { color: var(--amber); border-color: var(--amber-dim); }
.chip-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--amber);
}

.hero-cta { display: flex; flex-wrap: wrap; gap: 0.8rem; }

.hero-links {
  margin-top: 1rem;
  font-size: 0.82rem;
  color: var(--muted);
  display: flex;
  gap: 0.7rem;
}
.hero-links a,
.rig-hint a { color: var(--muted); }
.hero-links a:hover,
.rig-hint a:hover { color: var(--text); }

.btn {
  display: inline-block;
  font-size: 0.9rem;
  padding: 0.72rem 1.4rem;
  border: 1px solid var(--line);
  color: var(--text);
  background: transparent;
  transition: border-color 160ms ease, background 160ms ease, transform 160ms ease;
}
.btn:hover { border-color: var(--amber); color: var(--amber); transform: translateY(-1px); }

.btn-primary {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--ink-0);
  font-weight: 600;
}
.btn-primary:hover {
  background: var(--amber-hi);
  color: var(--ink-0);
  border-color: var(--amber-hi);
}

/* --- the rig (3D arm viewer) --- */

.hero-rig { display: flex; flex-direction: column; gap: 0.7rem; }

.rig-frame {
  position: relative;
  border: 1px solid var(--line);
  background:
    radial-gradient(ellipse 80% 60% at 50% 45%, rgba(255, 180, 92, 0.045), transparent 70%),
    var(--ink-1);
  aspect-ratio: 4 / 3.4;
  min-height: 300px;
  overflow: hidden;
}

#rig-mount {
  position: absolute;
  inset: 0;
}
#rig-mount canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.rig-status {
  position: absolute;
  left: 0.8rem;
  bottom: 0.6rem;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--muted);
  pointer-events: none;
}

/* boot overlay — the arm's little startup ritual */
.rig-boot {
  position: absolute;
  left: 1.1rem;
  bottom: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--cyan);
  pointer-events: none;
  opacity: 1;
  transition: opacity 600ms ease;
}
.rig-boot.is-done { opacity: 0; }
.rig-boot .boot-line { white-space: pre; }
.rig-boot .boot-line:last-of-type::after {
  content: "▮";
  margin-left: 0.35em;
  color: var(--amber);
  animation: boot-blink 1s steps(2) infinite;
}
@keyframes boot-blink { 50% { opacity: 0; } }
.boot-bar {
  width: 180px;
  height: 3px;
  margin-top: 0.2rem;
  background: var(--line);
}
.boot-bar div {
  height: 100%;
  width: 0;
  background: var(--cyan);
  transition: width 200ms ease;
}

/* registration marks on the frame corners */
.rig-corner {
  position: absolute;
  width: 14px;
  height: 14px;
  border: 0 solid var(--amber);
  pointer-events: none;
}
.rig-corner.tl { top: -1px; left: -1px; border-top-width: 2px; border-left-width: 2px; }
.rig-corner.tr { top: -1px; right: -1px; border-top-width: 2px; border-right-width: 2px; }
.rig-corner.bl { bottom: -1px; left: -1px; border-bottom-width: 2px; border-left-width: 2px; }
.rig-corner.br { bottom: -1px; right: -1px; border-bottom-width: 2px; border-right-width: 2px; }

.rig-readout {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.2rem;
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--line);
  background: var(--ink-1);
  font-size: 0.78rem;
  font-variant-numeric: tabular-nums;
}
.ro b { color: var(--muted); font-weight: 400; margin-right: 0.45em; }
.ro i { color: var(--cyan); font-style: normal; }

.rig-hint {
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.05em;
}

/* ================= SECTIONS ================= */

.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(3.5rem, 9vh, 6rem) var(--gutter) 0;
  scroll-margin-top: 84px;
}

.section-head {
  display: flex;
  align-items: baseline;
  gap: 1.2rem;
  margin-bottom: 2.4rem;
}

.section-head h2 {
  font-weight: 700;
  font-size: clamp(1.4rem, 2.8vw, 1.9rem);
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.topic {
  display: block;
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  color: var(--amber);
  margin-bottom: 0.45rem;
}

.head-rule {
  flex: 1;
  height: 1px;
  background-image: linear-gradient(90deg, var(--line) 60%, transparent 40%);
  background-size: 10px 1px;
  position: relative;
  top: -6px;
}
.head-rule::after {
  content: "";
  position: absolute;
  right: 0;
  top: -3.5px;
  width: 8px;
  height: 8px;
  border: 1px solid var(--amber);
  transform: rotate(45deg);
}

/* ================= ABOUT ================= */

.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

.about-copy p {
  font-family: var(--font-sans);
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 1.2rem;
}
.about-copy a { border-bottom: 1px dotted var(--amber); }
.about-copy a:hover { border-bottom-color: var(--amber-hi); }

.datasheet {
  border: 1px solid var(--line);
  background: var(--ink-1);
}

.datasheet-title {
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--line);
  color: var(--amber);
  font-size: 0.74rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.datasheet-id {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 1rem;
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--line);
  align-items: center;
}

.datasheet-portrait {
  display: block;
  width: 96px;
  height: 96px;
  border: 1px solid var(--line);
}

.datasheet-id-fields {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  font-size: 0.8rem;
}
.datasheet-id-fields .spec-key { padding-top: 0; }
.datasheet-id-fields .spec-key + .spec-val { margin-bottom: 0.5rem; }

.spec-row {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 1rem;
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--line);
  font-size: 0.8rem;
  line-height: 1.55;
}
.spec-row:last-child { border-bottom: 0; }
.spec-key { color: var(--muted); letter-spacing: 0.08em; font-size: 0.7rem; padding-top: 0.15em; text-transform: uppercase; }
.spec-val { color: var(--text); }

.datasheet-edu { border-top: 1px solid var(--line); }
.edu-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 1rem;
  font-size: 0.78rem;
  border-bottom: 1px solid var(--line);
}
.edu-row:last-child { border-bottom: 0; }
.edu-school { color: var(--text); font-weight: 600; }
.edu-degree { color: var(--muted); display: block; margin-top: 0.15rem; font-weight: 400; }
.edu-dates { color: var(--muted); white-space: nowrap; font-variant-numeric: tabular-nums; }

/* ================= PROJECTS ================= */

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.8rem;
}

.filter {
  font-family: var(--font);
  font-size: 0.8rem;
  padding: 0.42rem 0.9rem;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--muted);
  cursor: pointer;
  transition: color 140ms ease, border-color 140ms ease;
}
.filter:hover { color: var(--text); border-color: var(--muted); }
.filter.is-active {
  color: var(--amber);
  border-color: var(--amber);
  background: var(--amber-dim);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(330px, 100%), 1fr));
  grid-auto-flow: dense;
  gap: 1rem;
  padding-bottom: 0.5rem;
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  border: 1px solid var(--line);
  background: var(--ink-1);
  padding: 1.4rem 1.4rem 1.2rem;
  transition: border-color 160ms ease, transform 160ms ease, background 160ms ease;
}
.card:hover {
  border-color: var(--amber);
  transform: translateY(-3px);
  background: var(--ink-2);
}
.card.is-featured { grid-column: span 2; }

.card-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}

.card-year {
  font-size: 0.95rem;
  color: var(--amber);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.card-status {
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--amber);
  border: 1px solid var(--amber-dim);
  background: var(--amber-dim);
  padding: 0.14rem 0.5rem;
  border-radius: 999px;
  white-space: nowrap;
}

.card h3 {
  font-weight: 700;
  font-size: 1.15rem;
  line-height: 1.3;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

.card-media-link { display: block; }
.card-media {
  display: block;
  width: 100%;
  max-height: 260px;
  object-fit: cover;
  object-position: top;
  border: 1px solid var(--line);
}
.card-media-link:hover .card-media { border-color: var(--amber); }

.card-media-placeholder {
  position: relative;
  min-height: 170px;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 0.35rem;
  overflow: hidden;
  text-align: center;
  border-style: dashed;
  background:
    linear-gradient(90deg, transparent calc(50% - 0.5px), var(--line) 50%, transparent calc(50% + 0.5px)),
    linear-gradient(transparent calc(50% - 0.5px), var(--line) 50%, transparent calc(50% + 0.5px)),
    radial-gradient(circle at 50% 50%, var(--amber-dim), transparent 42%),
    var(--ink-0);
}
.card-media-placeholder::before,
.card-media-placeholder::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border-color: var(--amber);
  opacity: 0.8;
}
.card-media-placeholder::before {
  top: 10px;
  left: 10px;
  border-top: 1px solid;
  border-left: 1px solid;
}
.card-media-placeholder::after {
  right: 10px;
  bottom: 10px;
  border-right: 1px solid;
  border-bottom: 1px solid;
}
.media-slot-mark {
  width: 22px;
  height: 22px;
  border: 1px solid var(--amber);
  border-radius: 50%;
  box-shadow: 0 0 0 5px var(--amber-dim);
}
.media-slot-kicker,
.media-slot-format {
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}
.media-slot-label {
  padding: 0 1rem;
  color: var(--text);
  font-size: 0.78rem;
}
.media-slot-format { color: var(--cyan); }

.card-summary {
  font-family: var(--font-sans);
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.65;
  flex: 1;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag {
  font-size: 0.7rem;
  color: var(--muted);
  border: 1px solid var(--line);
  padding: 0.14rem 0.5rem;
}

.card-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem;
  padding-top: 0.55rem;
  border-top: 1px dashed var(--line);
  font-size: 0.8rem;
}
.card-links a::after { content: " ↗"; color: var(--muted); }
.card-links:empty { display: none; }

.card.is-hidden { display: none; }

.view-all {
  font-family: var(--font);
  font-size: 0.85rem;
  width: 100%;
  margin-top: 1rem;
  padding: 0.75rem;
  background: transparent;
  border: 1px dashed var(--line);
  color: var(--muted);
  cursor: pointer;
  transition: color 140ms ease, border-color 140ms ease;
}
.view-all:hover { color: var(--amber); border-color: var(--amber); }

/* ================= EXPERIENCE ================= */

.timeline {
  list-style: none;
  position: relative;
  padding-left: 2rem;
  display: flex;
  flex-direction: column;
  gap: 2.6rem;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 0;
  border-left: 1px dashed var(--line);
}

.tl-item { position: relative; }
.tl-item::before {
  content: "";
  position: absolute;
  left: calc(-2rem + 1px);
  top: 5px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink-0);
  border: 2px solid var(--amber);
  box-shadow: 0 0 0 3px var(--amber-dim);
}

.tl-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.4rem 1rem;
  margin-bottom: 0.5rem;
}

.tl-role {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.tl-org { font-size: 0.85rem; }
.tl-org::before { content: "@ "; color: var(--muted); }

.tl-dates {
  margin-left: auto;
  font-size: 0.78rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.tl-where {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.6rem;
}

.tl-points {
  font-family: var(--font-sans);
  list-style: none;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.65;
  max-width: 75ch;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.tl-points li { padding-left: 1.1rem; position: relative; }
.tl-points li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--amber);
  font-size: 0.8em;
  top: 0.25em;
}

/* ================= RESEARCH ================= */

.research-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.pub {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.4rem;
  border: 1px solid var(--line);
  background: var(--ink-1);
  padding: 1.3rem 1.5rem;
  align-items: start;
  transition: border-color 160ms ease;
}
.pub:hover { border-color: var(--amber); }

.pub-year {
  font-size: 1rem;
  color: var(--amber);
  border: 1px solid var(--amber-dim);
  background: var(--amber-dim);
  padding: 0.3rem 0.6rem;
  font-variant-numeric: tabular-nums;
}

.pub h3 {
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 0.3rem;
}
.pub h3 a { color: var(--text); border-bottom: 1px dotted var(--muted); }
.pub h3 a:hover { color: var(--amber); border-bottom-color: var(--amber); }

.pub-authors {
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.25rem;
}
.pub-authors b { color: var(--text); font-weight: 600; }
.pub-author-link {
  color: var(--amber);
  border-bottom: 1px dotted var(--amber);
}
.pub-author-link:hover { border-bottom-color: var(--amber-hi); }

.pub-footnote {
  color: var(--muted);
  font-size: 0.72rem;
  font-style: italic;
  margin-top: -0.15rem;
  margin-bottom: 0.3rem;
}

.pub-venue {
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 0.04em;
  margin-bottom: 0.4rem;
}

.pub-note {
  font-family: var(--font-sans);
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.65;
  max-width: 70ch;
}

.pub-links {
  margin-top: 0.5rem;
  font-size: 0.8rem;
  display: flex;
  gap: 1.1rem;
}

/* ================= FOOTER ================= */

.footer { padding-bottom: 3rem; }

.footer-lede {
  font-family: var(--font-sans);
  max-width: 58ch;
  font-size: 1rem;
  line-height: 1.65;
  color: var(--muted);
  margin-bottom: 2.4rem;
}
.footer-lede b { color: var(--text); }

.titleblock {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.tb-cell {
  background: var(--ink-1);
  padding: 0.9rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  min-width: 0;
}

.tb-key {
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.tb-val {
  font-size: 0.92rem;
  color: var(--text);
  overflow-wrap: anywhere;
}
a.tb-val { color: var(--amber); }
a.tb-val:hover { color: var(--amber-hi); }

/* ================= REVEAL ================= */

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 500ms ease, transform 500ms ease;
}
.reveal.is-in {
  opacity: 1;
  transform: none;
}

/* ================= RESPONSIVE ================= */

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: 0;
    padding-top: 2.5rem;
  }
  .hero-rig { order: 2; }
  .about-grid { grid-template-columns: 1fr; }
  .card.is-featured { grid-column: auto; }
  .titleblock { grid-template-columns: repeat(2, 1fr); }
  .nav { gap: 1rem; }
}

@media (max-width: 560px) {
  .nav-opt { display: none; }   /* keep the nav readable: /projects and /contact */

  .filters {
    flex-wrap: nowrap;
    overflow-x: auto;
    margin-inline: calc(-1 * var(--gutter));
    padding-inline: var(--gutter);
    padding-bottom: 0.2rem;
    scrollbar-width: none;
  }
  .filters::-webkit-scrollbar { display: none; }
  .filter { flex: 0 0 auto; }

  .projects-grid { gap: 0.8rem; }
  .card {
    gap: 0.7rem;
    padding: 1.1rem;
  }
  .card-summary {
    font-size: 0.94rem;
    line-height: 1.55;
  }
  .card-media { max-height: 210px; }
  .card-tags { gap: 0.35rem; }
  .card-links {
    gap: 0.7rem 1rem;
    padding-top: 0.45rem;
  }
}

@media (max-width: 520px) {
  .titleblock { grid-template-columns: 1fr; }
  .tl-dates { margin-left: 0; width: 100%; }
  .rig-frame { aspect-ratio: 4 / 3; min-height: 0; }
  .rig-readout { font-size: 0.7rem; gap: 0.3rem 0.9rem; }
}

/* ================= MOTION ================= */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .card:hover, .btn:hover { transform: none; }
  .rig-boot .boot-line:last-of-type::after { animation: none; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}