/* ============================================================
   IMPERIUM — LAYOUT WIREFRAME
   ------------------------------------------------------------
   Neutralised to the shared Norrvela wireframe palette.
   All brand themes, gradients and shadows removed; image areas
   are flat dashed placeholder boxes (see .wf-img at the end).
   Fonts and layout are unchanged from the original template.
   ============================================================ */

/* ---------- design tokens (wireframe palette) ---------- */
:root {
  --bg: #ededed;
  --bg-2: #e2e2e2;
  --panel: #e2e2e2;
  --panel-2: #dcdcdc;
  --input-bg: #ededed;
  --line: #c6c6c6;
  --text: #333333;
  --muted: #777777;
  --faint: #9a9a9a;
  --accent: var(--pop);
  --accent-bright: #777777;
  --accent-dim: #dcdcdc;
  --accent-contrast: var(--pop-ink);
  --nav-bg: rgba(237, 237, 237, 0.92);
  --card-shadow: none;
  --font-main: "Archivo", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --nav-h: 72px;
}

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

[hidden] { display: none !important; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: var(--accent); color: var(--accent-contrast); }

a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
em { font-style: italic; }

h1, h2, h3 {
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  line-height: 1.02;
}

h2 {
  font-size: clamp(2rem, 4.6vw, 3.6rem);
  margin: 0.35rem 0 1rem;
}

h2 em, h1 em {
  color: var(--accent-bright);
  font-weight: 800;
}

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

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--accent);
}

/* ---------- buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.95rem 1.9rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.18s ease, background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
  clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
}

.btn-gold {
  background: var(--accent);
  color: var(--accent-contrast);
}
.btn-gold:hover { transform: translateY(-2px); }

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent-bright); }

/* ---------- nav ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--nav-h);
  transition: background 0.25s ease, border-color 0.25s ease, backdrop-filter 0.25s ease;
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: var(--nav-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}

.nav-inner {
  max-width: 1280px;
  height: 100%;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand { display: inline-flex; align-items: center; gap: 0.65rem; }

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  font-weight: 900;
  font-size: 1.15rem;
  font-style: italic;
  color: var(--accent-contrast);
  background: var(--accent);
  clip-path: polygon(20% 0, 100% 0, 80% 100%, 0 100%);
}

.brand-word {
  font-weight: 900;
  letter-spacing: 0.34em;
  font-size: 0.95rem;
}

.nav-links { display: flex; align-items: center; gap: 1.75rem; }

.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color 0.15s ease;
}
.nav-links a:hover { color: var(--accent-bright); }

.nav-cta {
  color: var(--accent-contrast) !important;
  background: var(--accent);
  padding: 0.55rem 1.1rem;
  clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
}

.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 6px;
}
.nav-burger span {
  width: 24px; height: 2px;
  background: var(--text);
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-h) + 3rem) 1.5rem 4rem;
  background: var(--bg);
  overflow: hidden;
}

.hero-grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: 0.5;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black 30%, transparent 75%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  max-width: 1280px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  align-items: center;
  gap: 3rem;
}

.hero-title {
  font-size: clamp(2.6rem, 6.2vw, 5.2rem);
  margin: 1rem 0 1.4rem;
}

.hero-sub {
  color: var(--muted);
  max-width: 34rem;
  font-size: 1.05rem;
}
.hero-sub strong { color: var(--text); font-weight: 600; }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin: 2rem 0 2.6rem;
}

.hero-stats {
  display: flex;
  gap: 2.5rem;
  border-top: 1px solid var(--line);
  padding-top: 1.4rem;
}

.hero-stats dt {
  font-size: 1.35rem;
  font-weight: 900;
  font-style: italic;
  color: var(--accent-bright);
}
.hero-stats dd {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 0.15rem;
}

/* hero visual (placeholder box keeps the original 1:1 stage sizing) */
.hero-visual { position: relative; }

.wheel-stage {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  max-height: 72vh;
  margin: 0 auto;
}

.wheel-caption {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 0.75rem;
}

/* ---------- marquee ---------- */
.marquee {
  border-block: 1px solid var(--line);
  background: var(--bg-2);
  overflow: hidden;
  padding: 0.9rem 0;
}

.marquee-track {
  display: flex;
  align-items: center;
  gap: 2.2rem;
  width: max-content;
  animation: marquee 26s linear infinite;
}

.marquee-track span {
  font-weight: 800;
  font-style: italic;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.95rem;
  white-space: nowrap;
  color: var(--text);
}

.marquee-track i {
  color: var(--accent);
  font-style: normal;
  font-size: 0.6rem;
}

@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- sections ---------- */
.section {
  padding: 6.5rem 1.5rem;
  max-width: 1280px;
  margin: 0 auto;
}

.section-dark {
  max-width: none;
  background: var(--bg-2);
  border-block: 1px solid var(--line);
}
.section-dark > * { max-width: 1280px; margin-inline: auto; }

.section-head { max-width: 46rem; margin-bottom: 3.2rem; }

.section-sub { color: var(--muted); }
.section-sub a { color: var(--accent-bright); border-bottom: 1px solid var(--accent); }

/* ---------- catalog cards ---------- */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.1rem;
}

.cat-card {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--card-shadow);
  padding: 1.8rem 1.5rem 1.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  overflow: hidden;
  transition: transform 0.22s ease, border-color 0.22s ease;
}

.cat-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.cat-card:hover { transform: translateY(-5px); border-color: var(--accent); }
.cat-card:hover::before { transform: scaleX(1); }

.cat-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  color: var(--accent);
}

.cat-card h3 { font-size: 1.5rem; font-style: italic; }

.cat-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.cat-card ul {
  margin-top: 0.5rem;
  display: grid;
  gap: 0.45rem;
  flex: 1;
}

.cat-card li {
  font-size: 0.88rem;
  color: var(--muted);
  padding-left: 1.1rem;
  position: relative;
}
.cat-card li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.52em;
  width: 6px; height: 6px;
  background: var(--accent);
  clip-path: polygon(0 0, 100% 50%, 0 100%);
}

.cat-link {
  margin-top: 1.1rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-bright);
}
.cat-link:hover { text-decoration: underline; text-underline-offset: 4px; }

/* ---------- product series ---------- */
.series-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.1rem;
}

.series-card {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--card-shadow);
  padding-bottom: 1.4rem;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.series-card:hover { border-color: var(--accent); transform: translateY(-5px); }

.series-card h3 { font-size: 1.25rem; font-style: italic; padding: 0 1.3rem; margin-top: 1.1rem; }
.series-card p { font-size: 0.85rem; color: var(--muted); padding: 0.35rem 1.3rem 0.9rem; }

/* series visual: placeholder box keeps the original 4:3 image ratio */
.series-visual { aspect-ratio: 4 / 3; }

.chips { display: flex; flex-wrap: wrap; gap: 0.4rem; padding: 0 1.3rem; }
.chips span {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-bright);
  background: var(--accent-dim);
  border: 1px solid var(--accent-dim);
  padding: 0.28rem 0.6rem;
}

.wheels-cta {
  margin-top: 3rem;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 2rem 2.2rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.4rem;
}

.wheels-cta p { font-size: 1.1rem; font-weight: 600; max-width: 30rem; }
.wheels-cta > div { display: flex; flex-wrap: wrap; gap: 0.8rem; }

/* ---------- why choose us ---------- */
.chassis {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2.6rem;
}
.chassis span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border: 1px solid var(--line);
  color: var(--muted);
  padding: 0.45rem 0.9rem;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.chassis span:hover { color: var(--accent-bright); border-color: var(--accent); }

.bmw-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.1rem;
}

.bmw-col {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--card-shadow);
  padding: 1.7rem 1.5rem;
}

.bmw-col h3 {
  font-size: 1.2rem;
  font-style: italic;
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  padding-bottom: 0.9rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.bmw-col-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--accent);
}

.bmw-col ul { display: grid; gap: 0.55rem; }
.bmw-col li {
  font-size: 0.9rem;
  color: var(--muted);
  padding-left: 1.1rem;
  position: relative;
}
.bmw-col li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.52em;
  width: 6px; height: 6px;
  background: var(--accent);
  clip-path: polygon(0 0, 100% 50%, 0 100%);
}

/* ---------- process ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.1rem;
  counter-reset: step;
}

.steps li {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--card-shadow);
  padding: 1.9rem 1.6rem;
}

.step-num {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  font-style: italic;
  color: transparent;
  -webkit-text-stroke: 1px var(--accent);
  display: block;
  margin-bottom: 0.9rem;
}

.steps h3 { font-size: 1.2rem; font-style: italic; margin-bottom: 0.5rem; }
.steps p { font-size: 0.9rem; color: var(--muted); }

/* ---------- quote form ---------- */
.build-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: 1.4rem;
  align-items: start;
}

.build-form, .contact-form {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--card-shadow);
  padding: 2rem;
}

fieldset { border: 0; margin-bottom: 1.8rem; }

legend {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
  padding-top: 0.4rem;
}

.f-row { display: grid; gap: 1rem; margin-bottom: 1rem; }
.f-row-2 { grid-template-columns: repeat(2, 1fr); }
.f-row-3 { grid-template-columns: repeat(3, 1fr); }

label {
  display: grid;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

input, select, textarea {
  font-family: var(--font-main);
  font-size: 0.95rem;
  color: var(--text);
  background: var(--input-bg);
  border: 1px solid var(--line);
  padding: 0.75rem 0.9rem;
  width: 100%;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  border-radius: 0;
  appearance: none;
}

select {
  background-image: linear-gradient(45deg, transparent 50%, var(--accent) 50%), linear-gradient(135deg, var(--accent) 50%, transparent 50%);
  background-position: calc(100% - 18px) 55%, calc(100% - 12px) 55%;
  background-size: 6px 6px;
  background-repeat: no-repeat;
  padding-right: 2.2rem;
}

textarea { resize: vertical; min-height: 84px; }

input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

input::placeholder, textarea::placeholder { color: var(--faint); text-transform: none; letter-spacing: 0; font-family: var(--font-main); }

.f-check {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1rem;
  cursor: pointer;
}
.f-check input { width: auto; appearance: auto; accent-color: var(--accent); }

.f-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; }

.f-note {
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--muted);
}
.f-note.ok { color: var(--accent-bright); }

/* summary */
.build-summary {
  position: sticky;
  top: calc(var(--nav-h) + 1.2rem);
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--card-shadow);
  padding: 1.8rem 1.6rem;
}

.build-summary h3 {
  font-size: 1.3rem;
  font-style: italic;
  padding-bottom: 0.9rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.build-summary dl { display: grid; gap: 0.55rem; }

.build-summary dl > div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.85rem;
}

.build-summary dt {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  padding-top: 0.18rem;
}

.build-summary dd { text-align: right; color: var(--text); font-weight: 600; }
.build-summary dd.empty { color: var(--faint); font-weight: 400; }

.summary-note {
  margin-top: 1.3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 0.8rem;
  color: var(--muted);
}

/* ---------- contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: 1.4rem;
  align-items: start;
}

.contact-info {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--card-shadow);
  padding: 1.8rem 1.6rem;
}

.contact-info h3 { font-size: 1.3rem; font-style: italic; margin-bottom: 1.2rem; }

.contact-info ul { display: grid; gap: 1rem; margin-bottom: 1.4rem; }
.contact-info li { font-size: 0.95rem; display: grid; gap: 0.15rem; }
.contact-info li span {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}
.contact-info a { color: var(--accent-bright); }
.contact-info a:hover { text-decoration: underline; text-underline-offset: 4px; }

.contact-note {
  font-size: 0.82rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
  padding-top: 1.1rem;
}

/* ---------- footer ---------- */
.footer {
  border-top: 1px solid var(--line);
  padding: 3rem 1.5rem;
  background: var(--bg);
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  gap: 1.2rem;
  justify-items: center;
  text-align: center;
}

.footer-links { display: flex; flex-wrap: wrap; gap: 1.5rem; justify-content: center; }
.footer-links a {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}
.footer-links a:hover { color: var(--accent-bright); }

.footer-small { font-size: 0.78rem; color: var(--faint); max-width: 34rem; }

/* ---------- reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .marquee-track { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---------- responsive ---------- */
@media (max-width: 1024px) {
  .cat-grid, .series-grid { grid-template-columns: repeat(2, 1fr); }
  .bmw-grid, .steps { grid-template-columns: 1fr; }
  .build-grid, .contact-grid { grid-template-columns: 1fr; }
  .build-summary { position: static; }
}

@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; gap: 2rem; }
  .hero { padding-top: calc(var(--nav-h) + 2rem); }
  .hero-visual { order: -1; }
  .wheel-stage { max-width: 420px; }
  .hero-stats { gap: 1.6rem; flex-wrap: wrap; }

  .nav-burger { display: flex; }
  .nav-links {
    position: fixed;
    inset: var(--nav-h) 0 auto 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 1.2rem;
    background: var(--nav-bg);
    border-bottom: 1px solid var(--line);
    padding: 1.6rem 1.5rem 2rem;
    transform: translateY(-130%);
    transition: transform 0.25s ease;
  }
  .nav-links.open { transform: none; }
}

@media (max-width: 560px) {
  .cat-grid, .series-grid { grid-template-columns: 1fr; }
  .f-row-2, .f-row-3 { grid-template-columns: 1fr; }
  .section { padding: 4.5rem 1.2rem; }
  .build-form, .contact-form { padding: 1.4rem; }
}

/* ============================================================
   LAYOUT WIREFRAME — image placeholders
   Every image / visual area is a flat #dcdcdc box with a 1px
   dashed border and a centered label naming the real content
   that belongs there. Original dimensions are preserved.
   ============================================================ */
.wf-img {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: #dcdcdc;
  border: 1px dashed #a8a8a8;
  color: #777777;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  padding: 1rem;
}

/* hero visual fills the original 1:1 stage */
.wf-hero { width: 100%; height: 100%; }

/* ============================================================
   COLOUR OPTION — viewer "add colour" widget
   --pop re-themes the template's accent surfaces (primary
   buttons, nav CTA, brand mark, highlights, focus rings,
   checkboxes, ::selection); --pop-ink is the text colour on
   those surfaces. Default is the neutral grey accent; the
   bottom-right widget overrides these vars on <html>.
   ============================================================ */
:root { --pop: #9a9a9a; --pop-ink: #ffffff; }