/* ═══════════════════════════════════════════════════════════════
   pinned-stage — Insinööritoimisto Vaaksa (teemademo)
   Yksi kiinnitetty taustakuva, jonka yli hero, toimintatapa ja
   palvelut vyöryvät. Mono-ääni koko käyttöliittymässä.
   ═══════════════════════════════════════════════════════════════ */

@font-face {
  font-family: 'Plus Jakarta Sans';
  src: url('assets/fonts/plus-jakarta-sans-variable-latin.woff2') format('woff2');
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'JetBrains Mono';
  src: url('assets/fonts/jetbrains-mono-variable-latin.woff2') format('woff2');
  font-weight: 400 600;
  font-style: normal;
  font-display: swap;
}

:root {
  --black: #0A0B0A;
  --spruce: #12251D;
  --spruce-deep: #0D1A14;
  --white: #FFFFFF;
  --muted: #9AA39D;          /* 7.6:1 mustalla, 6.2:1 kuusenvihreällä */
  --line: rgba(255, 255, 255, .18);
  --line-strong: rgba(255, 255, 255, .32);
  --mint: #7DE8A9;           /* 13.1:1 mustalla — vain hover/interaktio */
  --paper: #F6F5F2;
  --ink: #3C4540;            /* 9.1:1 paperilla */
  --ink-strong: #141A17;
  --forest: #1C4A33;         /* 9.3:1 paperilla — mintin korvike vaalealla */
  --glass: rgba(0, 0, 0, .40);
  --glass-line: rgba(255, 255, 255, .20);

  --sans: 'Plus Jakarta Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;
  --gutter: clamp(1.15rem, 5vw, 5rem);
  --maxw: 76rem;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--black);
  color: var(--white);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

h1, h2, h3 {
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0;
  text-wrap: balance;
}

p { margin: 0 0 1rem; }

a { color: inherit; }

.mono {
  font-family: var(--mono);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

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

.skip-link {
  position: absolute;
  left: 0.75rem;
  top: -120px;
  z-index: 99;
  background: var(--white);
  color: var(--black);
  font-family: var(--mono);
  font-size: 0.8rem;
  padding: 0.7rem 1rem;
  text-decoration: none;
}
.skip-link:focus { top: 0.75rem; }

/* ── Luonnosbanneri ──────────────────────────────────────────── */
.demo-banner {
  display: block;
  position: relative;
  z-index: 30;
  background: var(--mint);
  color: #06210F;
  text-align: center;
  text-decoration: none;
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.5rem 1rem;
}
.demo-banner b { font-weight: 700; }

/* ── Yläpalkki ───────────────────────────────────────────────── */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 3vw, 2.5rem);
  padding: 0.85rem var(--gutter);
  background: rgba(10, 11, 10, .58);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.wordmark {
  font-family: var(--mono);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.18em;
  text-decoration: none;
  margin-right: auto;
}
.wordmark span { font-size: 0.6em; vertical-align: super; color: var(--muted); }
.topbar-links {
  display: none;
  gap: 1.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.topbar-links a {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--white);
}
@media (min-width: 860px) { .topbar-links { display: flex; } }

/* ── Rullaavat tekstit (napit + navi) ────────────────────────── */
.roll { display: inline-block; overflow: hidden; height: 1.25em; vertical-align: bottom; }
.roll-in { display: block; transition: transform .42s cubic-bezier(.22, 1, .36, 1); }
.roll-in > span { display: block; height: 1.25em; line-height: 1.25; }
.roll-in > span + span { color: var(--mint); }
.roll:hover .roll-in,
.roll:focus-visible .roll-in { transform: translateY(-1.25em); }
.btn:hover .roll-in,
.btn:focus-visible .roll-in { transform: translateY(-1.25em); }

.btn {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  padding: 0.85rem 1.35rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  white-space: nowrap;
  transition: background-color .3s ease, border-color .3s ease, color .3s ease;
}
.btn--ghost:hover, .btn--ghost:focus-visible { border-color: var(--mint); }
.btn--solid {
  background: var(--white);
  color: var(--black);
  border-color: var(--white);
}
.btn--solid .roll-in > span + span { color: var(--forest); }
.btn--mint {
  background: transparent;
  border-color: var(--mint);
  color: var(--mint);
}
.btn--mint:hover, .btn--mint:focus-visible { background: var(--mint); color: #06210F; }
.btn--mint .roll-in > span + span { color: #06210F; }

/* ═══ KIINNITETTY NÄYTTÄMÖ ══════════════════════════════════════
   .stage-bg on sticky-kerros, .stage-content vedetään sen päälle
   negatiivisella marginaalilla. Ei JS:ää.                        */
.stage {
  position: relative;
  z-index: 0;
  isolation: isolate;
}
.stage-bg {
  position: sticky;
  top: 0;
  height: 100svh;
  overflow: hidden;
  z-index: 0;
  background: var(--black);
}
.stage-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 42%;
  animation: ken-burns 60s ease-in-out infinite alternate;
  transform-origin: 58% 40%;
  filter: grayscale(.25) contrast(1.05);
}
@keyframes ken-burns {
  from { transform: scale(1); }
  to   { transform: scale(1.06); }
}
.stage-veil {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 80% at 72% 28%, rgba(18, 37, 29, .30), transparent 70%),
    linear-gradient(180deg, rgba(10, 11, 10, .80) 0%, rgba(18, 37, 29, .82) 45%, rgba(10, 11, 10, .92) 100%);
}
.stage-content {
  position: relative;
  z-index: 1;
  margin-top: -100svh;
}

/* ── Hero ────────────────────────────────────────────────────── */
.hero {
  min-height: calc(100svh - 3.6rem);
  display: grid;
  grid-template-columns: 1fr;
  align-content: center;
  gap: clamp(1.75rem, 5vw, 3rem);
  padding: clamp(3rem, 9vh, 6rem) var(--gutter) 3.5rem;
  max-width: var(--maxw);
  margin-inline: auto;
}
.eyebrow { color: var(--mint); margin-bottom: 1.25rem; }
.hero h1 {
  font-size: clamp(2.6rem, 8.5vw, 5.1rem);
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}
.hero h1 em {
  font-style: normal;
  color: var(--muted);
}
.lede {
  max-width: 40ch;
  font-size: clamp(1rem, 2.4vw, 1.12rem);
  color: #DCE2DE;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}
.scroll-hint {
  color: var(--muted);
  font-size: 0.7rem;
  margin: 0;
}

/* ── Lasikortit ──────────────────────────────────────────────── */
.hero-cards { display: grid; gap: 1rem; align-content: start; }
.glass {
  background: var(--glass);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-line);
  border-radius: 14px;
  padding: 1.25rem 1.35rem 1.15rem;
}
.card-label { color: var(--muted); font-size: 0.7rem; margin: 0 0 0.35rem; }
.card-figure {
  font-family: var(--mono);
  font-size: clamp(2.4rem, 7vw, 3rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  margin: 0 0 0.65rem;
}
.card-figure--sm { font-size: 2rem; margin-bottom: 0.15rem; }
.card-foot { color: var(--muted); font-size: 0.62rem; margin: 0.7rem 0 0; letter-spacing: 0.05em; }
.spark { width: 100%; height: auto; }
.spark-line { fill: none; stroke: var(--mint); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.spark-fill { fill: rgba(125, 232, 169, .13); stroke: none; }
.spark-dot { fill: var(--mint); }
.glass--row { display: flex; align-items: center; gap: 1rem; }
.avatars { width: 118px; flex: none; }
.avatars circle {
  fill: rgba(255, 255, 255, .10);
  stroke: var(--line-strong);
  stroke-width: 1.5;
}
.avatars .avatars-last { fill: rgba(125, 232, 169, .22); stroke: var(--mint); }

/* ── Luvut näyttämöllä ───────────────────────────────────────── */
.chapter {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: clamp(3.5rem, 11vh, 7rem) var(--gutter);
}
.chapter--flush { padding-left: 0; padding-right: 0; }
.chapter--flush > .rule,
.chapter--flush > .label,
.chapter--flush > .chapter-title { margin-inline: var(--gutter); }
.label { color: var(--mint); margin: 1.25rem 0 2rem; font-size: 0.72rem; }
.chapter-grid { display: grid; gap: clamp(1.5rem, 4vw, 3.5rem); }
.chapter h2, .chapter-title {
  font-size: clamp(1.9rem, 5.2vw, 3.1rem);
}
.chapter-title { margin-bottom: 2.5rem; }
.chapter-body p { color: #CDD4CF; max-width: 46ch; }

.promises { margin: 2rem 0 0; display: grid; gap: 1.4rem; }
.promises dt {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--white);
  padding-top: 0.9rem;
  border-top: 1px solid var(--line);
}
.promises dd { margin: 0.45rem 0 0; color: var(--muted); max-width: 46ch; }

/* ── Itsensä piirtävät viivat ────────────────────────────────── */
.rule {
  display: block;
  height: 1px;
  background: var(--line-strong);
  width: 100%;
}
.js-rules .rule {
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 1.1s cubic-bezier(.16, 1, .3, 1);
}
.js-rules .rule.is-drawn { transform: scaleX(1); }
.rule--dark { background: rgba(20, 26, 23, .22); }

/* ── Palvelurivit: valkoinen pyyhkäisy ───────────────────────── */
.svc-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.svc-list li { border-bottom: 1px solid var(--line); }
.svc {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-areas: 'num name arrow' 'num desc arrow';
  align-items: center;
  gap: 0.2rem 1rem;
  padding: 1.5rem var(--gutter);
  text-decoration: none;
  isolation: isolate;
  overflow: hidden;
  transition: color .35s ease;
}
.svc::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--paper);
  transform: translateY(101%);
  transition: transform .45s cubic-bezier(.22, 1, .36, 1);
}
.svc:hover, .svc:focus-visible { color: var(--ink-strong); }
.svc:hover::before, .svc:focus-visible::before { transform: translateY(0); }
.svc-num {
  grid-area: num;
  color: var(--muted);
  font-size: 0.78rem;
  transition: color .35s ease;
}
.svc-name {
  grid-area: name;
  font-size: clamp(1.35rem, 4.6vw, 2.15rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
  transition: transform .45s cubic-bezier(.22, 1, .36, 1);
}
.svc-desc {
  grid-area: desc;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.5;
  max-width: 52ch;
  transition: color .35s ease, transform .45s cubic-bezier(.22, 1, .36, 1);
}
.svc-arrow { grid-area: arrow; display: flex; align-items: center; }
.svc-arrow svg {
  stroke: currentColor;
  fill: none;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: .55;
  transition: transform .45s cubic-bezier(.22, 1, .36, 1), opacity .35s ease;
}
.svc:hover .svc-name, .svc:focus-visible .svc-name { transform: translateX(0.65rem); }
.svc:hover .svc-desc, .svc:focus-visible .svc-desc { transform: translateX(0.65rem); color: #5B6560; }
.svc:hover .svc-num, .svc:focus-visible .svc-num { color: var(--forest); }
.svc:hover .svc-arrow svg, .svc:focus-visible .svc-arrow svg { transform: rotate(-45deg); opacity: 1; }

/* ═══ VALKOINEN LUKU — sivu irtoaa taustakuvasta ═══════════════ */
.paper {
  position: relative;
  z-index: 1;
  background: var(--paper);
  color: var(--ink);
  padding: clamp(3rem, 10vh, 6.5rem) var(--gutter) clamp(3.5rem, 11vh, 7rem);
}
.paper h2, .paper h3 { color: var(--ink-strong); }
.paper h2 { font-size: clamp(1.9rem, 5.2vw, 3.1rem); }
.label--dark { color: var(--forest); }
.paper-lede { max-width: 44ch; margin-top: 1.25rem; font-size: 1.05rem; }
.paper-grid { display: grid; gap: clamp(2rem, 5vw, 3.5rem); }

.photo-note {
  border: 1px solid rgba(20, 26, 23, .18);
  border-left: 3px solid var(--forest);
  background: rgba(28, 74, 51, .06);
  padding: 0.9rem 1.1rem;
  font-size: 0.82rem;
  line-height: 1.5;
  margin-bottom: 2.25rem;
  max-width: 60ch;
}
.photo-note strong { color: var(--ink-strong); }

.steps { list-style: none; margin: 2.5rem 0 0; padding: 0; display: grid; gap: 1.6rem; }
.steps li { padding-top: 1.1rem; border-top: 1px solid rgba(20, 26, 23, .16); }
.step-num { color: var(--forest); font-size: 0.75rem; }
.steps h3 { font-size: 1.15rem; margin: 0.35rem 0 0.4rem; letter-spacing: -0.01em; }
.steps p { margin: 0; max-width: 48ch; font-size: 0.95rem; }

.paper-side { display: grid; gap: 1.75rem; align-content: start; }
.photo-card { margin: 0; }
.photo-card img { width: 100%; height: auto; border-radius: 4px; }
.photo-card figcaption {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--forest);
  margin-top: 0.6rem;
}
.price-box { border: 1px solid rgba(20, 26, 23, .18); padding: 1.25rem 1.35rem; }
.price-box .label { margin: 0 0 1rem; }
.prices { margin: 0; display: grid; gap: 0.7rem; }
.prices > div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: baseline;
  border-bottom: 1px dotted rgba(20, 26, 23, .3);
  padding-bottom: 0.55rem;
}
.prices dt { font-size: 0.95rem; }
.prices dd {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--ink-strong);
  white-space: nowrap;
}
.fineprint { font-size: 0.78rem; color: #55605A; margin: 1rem 0 0; }

/* ═══ TOIMIALUE ════════════════════════════════════════════════ */
.area {
  position: relative;
  z-index: 1;
  background: var(--spruce);
  padding: clamp(3.5rem, 10vh, 6.5rem) var(--gutter);
}
.area-grid {
  max-width: var(--maxw);
  margin-inline: auto;
  display: grid;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
.area > .rule, .area > .label { max-width: var(--maxw); margin-inline: auto; }
.area h2 { font-size: clamp(1.8rem, 4.8vw, 2.7rem); margin-bottom: 1.25rem; }
.area p { color: var(--muted); max-width: 46ch; }
.area-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  padding: 0;
  margin: 1.5rem 0 0;
}
.area-tags li {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.35rem 0.8rem;
  font-size: 0.7rem;
  color: #C6CDC8;
}
.dotmap { width: 100%; max-width: 26rem; justify-self: center; }
.dotmap-grid circle { fill: var(--mint); }
.dotmap-ring { fill: none; stroke: var(--line-strong); stroke-width: 1; stroke-dasharray: 3 5; }
.dotmap-ring--2 { stroke: rgba(125, 232, 169, .45); }
.dotmap-core { fill: var(--white); }

/* ═══ ISO NUMERO + CTA ═════════════════════════════════════════ */
.cta {
  position: relative;
  z-index: 1;
  background: var(--spruce-deep);
  border-top: 1px solid var(--line);
  padding: clamp(3.5rem, 12vh, 7rem) var(--gutter);
  text-align: center;
}
.cta-eyebrow { color: var(--muted); font-size: 0.72rem; margin: 0; }
.cta-figure {
  font-family: var(--mono);
  font-weight: 600;
  font-size: clamp(4.5rem, 21vw, 9rem);
  line-height: 0.95;
  letter-spacing: -0.045em;
  margin: 0.5rem 0 1rem;
  color: var(--white);
}
.cta h2 {
  font-size: clamp(1.35rem, 4vw, 2.1rem);
  font-weight: 500;
  color: #D5DCD7;
  margin-bottom: 2.25rem;
}
.cta .btn { display: inline-block; }

/* ═══ YHTEYS ═══════════════════════════════════════════════════ */
.contact {
  position: relative;
  z-index: 1;
  background: var(--black);
  padding: clamp(3.5rem, 10vh, 6.5rem) var(--gutter);
}
.contact > .rule, .contact > .label, .contact > .btn { max-width: var(--maxw); margin-inline: auto; }
.contact > .btn { display: block; width: max-content; margin-top: 2.5rem; }
.contact-grid {
  max-width: var(--maxw);
  margin-inline: auto;
  display: grid;
  gap: clamp(1.75rem, 5vw, 4rem);
}
.contact h2 { font-size: clamp(1.8rem, 4.8vw, 2.7rem); margin-bottom: 1.25rem; }
.contact-lede { color: #CDD4CF; max-width: 44ch; }
.contact-list { margin: 0; display: grid; gap: 1.2rem; }
.contact-list > div { border-top: 1px solid var(--line); padding-top: 0.85rem; }
.contact-list dt { color: var(--mint); font-size: 0.7rem; }
.contact-list dd { margin: 0.3rem 0 0; color: #DCE2DE; }

/* ═══ ALATUNNISTE ══════════════════════════════════════════════ */
.footer {
  position: relative;
  z-index: 1;
  background: var(--spruce);
  border-top: 1px solid var(--line);
  padding: clamp(2.5rem, 7vh, 4rem) var(--gutter) 2rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}
.footer-mark {
  font-size: 1rem;
  letter-spacing: 0.2em;
  color: var(--white);
  margin: 0 0 1rem;
}
.footer-mark span { font-size: 0.6em; vertical-align: super; color: var(--muted); }
.footer p { margin: 0 0 0.4rem; }
.footer .small { font-size: 0.8rem; }
.footer a { color: var(--white); text-decoration-color: var(--line-strong); text-underline-offset: 3px; }
.footer a:hover { color: var(--mint); }

/* Tekoälyilmoitus (EU AI Act 50 art.) — ks. webpages/kit/ai-disclosure/. */
.ai-note {
  margin: 1.5rem auto 0;
  max-width: 62ch;
  padding: 0 1rem 2rem;
  font-size: 0.75rem;
  line-height: 1.55;
}
.ai-note strong { font-weight: 600; color: var(--white); }

/* ═══ LEVEÄT NÄYTÖT ════════════════════════════════════════════ */
@media (min-width: 900px) {
  .hero {
    grid-template-columns: minmax(0, 1.35fr) minmax(19rem, 0.85fr);
    align-items: center;
    gap: clamp(2rem, 5vw, 4.5rem);
  }
  .hero-copy { grid-column: 1; }
  .hero-cards { grid-column: 2; }
  .scroll-hint { grid-column: 1 / -1; }
  .chapter-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); }
  .promises { grid-template-columns: 1fr; }
  .svc {
    grid-template-columns: 4.5rem minmax(0, 1fr) minmax(0, 1.1fr) 3rem;
    grid-template-areas: 'num name desc arrow';
    align-items: center;
    padding-block: 2rem;
    gap: 1.5rem;
  }
  .paper-grid { grid-template-columns: minmax(0, 1.25fr) minmax(18rem, 0.8fr); }
  .steps { grid-template-columns: 1fr 1fr; gap: 1.75rem 2.5rem; }
  .area-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr); }
  .contact-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .contact-list { grid-template-columns: 1fr 1fr; gap: 1.2rem 2rem; }
}

/* ═══ LIIKKEEN VÄHENTÄMINEN ════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .stage-img { animation: none; transform: none; }
  .roll-in { transition: none; }
  .roll:hover .roll-in, .roll:focus-visible .roll-in,
  .btn:hover .roll-in, .btn:focus-visible .roll-in { transform: none; }
  .roll-in > span + span { display: none; }
  .roll:hover .roll-in > span:first-child,
  .roll:focus-visible .roll-in > span:first-child { color: var(--mint); }
  .btn--solid:hover .roll-in > span:first-child { color: var(--forest); }
  .rule, .js-rules .rule { transform: none !important; transition: none; }
  .svc::before { transition: none; }
  .svc-name, .svc-desc, .svc-arrow svg { transition: none; }
  .svc:hover .svc-name, .svc:focus-visible .svc-name,
  .svc:hover .svc-desc, .svc:focus-visible .svc-desc { transform: none; }
  * { animation-duration: .001ms !important; animation-iteration-count: 1 !important; }
}