:root {
  --bg: #0c0c0c;
  --panel: rgba(14, 14, 14, 0.72);
  --panel-strong: rgba(7, 7, 7, 0.82);
  --text: #f6f2ea;
  --muted: rgba(246, 242, 234, 0.78);
  --line: rgba(246, 242, 234, 0.18);
  --accent: #f39b13;
  --accent-dark: #b66d00;
  --dark-button: #43484b;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.42);
  --radius: 22px;
  --max: 1180px;
  --header-h: 72px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Arial", "Helvetica", sans-serif;
  line-height: 1.55;
}
body.lightbox-open { overflow: hidden; }
a { color: inherit; }
img { max-width: 100%; display: block; }
button { font: inherit; }

.skip-link {
  position: fixed;
  top: -100px;
  left: 1rem;
  z-index: 10000;
  background: #fff;
  color: #000;
  padding: .7rem 1rem;
  border-radius: .5rem;
}
.skip-link:focus { top: 1rem; }
.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;
}

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .55rem clamp(.9rem, 3vw, 1.6rem);
  background: rgba(7, 7, 7, .58);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,.08);
  transition: background .2s ease, min-height .2s ease;
}
.site-header.is-scrolled { background: rgba(7, 7, 7, .86); min-height: 62px; }
.brand {
  display: flex;
  align-items: center;
  gap: .7rem;
  text-decoration: none;
  color: #fff;
  min-width: 0;
}
.brand img { width: 78px; height: auto; }
.brand span {
  font-size: clamp(.78rem, 1.5vw, 1rem);
  font-style: italic;
  white-space: nowrap;
  color: rgba(255,255,255,.88);
}
.site-nav {
  display: flex;
  align-items: center;
  gap: .8rem;
}
.site-nav a { display: inline-flex; align-items: center; position: relative; min-height: 30px; }
.site-nav a {
  text-decoration: none;
  color: rgba(255,255,255,.92);
  font-size: clamp(.95rem, 1.5vw, 1.15rem);
  line-height: 1;
  transition: color .18s ease, transform .18s ease;
}
.site-nav a:not(.icon-link)::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.25rem;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .18s ease;
}
.site-nav a:hover { color: #fff; transform: translateY(-1px); }
.site-nav a:hover::after { transform: scaleX(1); }
.icon-link { display: inline-flex; align-items: center; justify-content: center; width: 30px; height: 30px; }
.icon-link img { width: 22px; height: 22px; object-fit: contain; opacity: .95; }
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(0,0,0,.3);
  color: #fff;
  padding: 0;
}
.nav-toggle span:not(.sr-only) {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px auto;
  background: #fff;
  transition: transform .18s ease, opacity .18s ease;
}
.nav-toggle.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.section {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: calc(var(--header-h) + 2rem) clamp(1rem, 4vw, 3rem) 3rem;
}
.section-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-size: cover;
  background-position: center;
  transform: scale(1.015);
}
.section-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0,0,0,.7), rgba(0,0,0,.38) 46%, rgba(0,0,0,.58));
}
.section-inner {
  position: relative;
  z-index: 1;
  width: min(100%, var(--max));
  margin: 0 auto;
}
.section--hero .section-bg { background-image: url('../img/bg/hero.webp'); background-position: left center; }
.section--palvelut .section-bg { background-image: url('../img/bg/palvelut.webp'); background-position: center; }
.section--portfolio .section-bg { background-image: url('../img/bg/portfolio.webp'); background-position: center; }
.section--arttu .section-bg { background-image: radial-gradient(circle at 78% 34%, rgba(243,155,19,.20), transparent 28%), linear-gradient(135deg, #080808 0%, #171717 48%, #2b2419 100%); background-position: center; }
.section--yhteys .section-bg { background-image: url('../img/bg/yhteys.webp'); background-position: center; }
.section--portfolio .section-bg::after { background: rgba(0,0,0,.66); backdrop-filter: blur(1px); }
.section--palvelut .section-bg::after { background: linear-gradient(90deg, rgba(0,0,0,.74), rgba(0,0,0,.38)); }
.section--arttu .section-bg::after { background: linear-gradient(90deg, rgba(0,0,0,.70), rgba(0,0,0,.16)); }
.section--yhteys .section-bg::after { background: linear-gradient(90deg, rgba(0,0,0,.80), rgba(0,0,0,.36)); }

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, .55fr);
  align-items: center;
  gap: clamp(1.5rem, 5vw, 5rem);
}
.hero-copy { max-width: 710px; }
.eyebrow {
  margin: 0 0 .5rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: .06em;
  font-weight: 900;
  font-size: clamp(.8rem, 1.3vw, 1rem);
}
h1, h2, h3, p { margin-top: 0; }
h1, h2 {
  margin-bottom: 1rem;
  line-height: .94;
  letter-spacing: -.055em;
  font-family: "Arial Black", Impact, "Arial Narrow", sans-serif;
  text-wrap: balance;
}
h1 { font-size: clamp(3.1rem, 8.4vw, 7.6rem); text-shadow: 0 7px 26px rgba(0,0,0,.48); }
h2 { font-size: clamp(3rem, 7vw, 6.4rem); text-shadow: 0 7px 24px rgba(0,0,0,.45); }
h3 { font-size: clamp(1.1rem, 2vw, 1.35rem); margin-bottom: .6rem; }
.lead { font-size: clamp(1.02rem, 1.7vw, 1.28rem); color: rgba(255,255,255,.9); max-width: 760px; }
.support { font-size: clamp(1rem, 1.6vw, 1.18rem); color: rgba(255,255,255,.84); }
.button-row { display: flex; flex-wrap: wrap; gap: .8rem 1rem; align-items: center; margin-top: 1.5rem; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 150px;
  min-height: 44px;
  padding: .72rem 1.3rem;
  border-radius: 999px;
  font-weight: 900;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform .18s ease, background .18s ease, border-color .18s ease;
}
.button:hover { transform: translateY(-1px); }
.button--primary { background: var(--accent); color: #111; }
.button--primary:hover { background: #ffad28; }
.button--secondary { background: rgba(65,70,73,.86); color: #fff; border-color: rgba(255,255,255,.14); }
.button--secondary:hover { background: rgba(83,88,92,.95); }
.identity-card, .content-panel, .service-card, .portfolio-wrap {
  background: var(--panel);
  border: 1px solid rgba(255,255,255,.12);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}
.identity-card {
  border-radius: var(--radius);
  padding: clamp(1.35rem, 3vw, 2.2rem);
  text-align: center;
  justify-self: end;
  max-width: 365px;
}
.identity-card img { width: min(68%, 190px); height: auto; max-height: 245px; object-fit: contain; margin: 0 auto 1.2rem; }
.identity-card p { color: rgba(255,255,255,.86); font-size: 1.05rem; }

.split-layout {
  display: grid;
  grid-template-columns: .74fr 1fr;
  align-items: center;
  gap: clamp(1.5rem, 4vw, 3.5rem);
}
.section-copy { max-width: 460px; }
.service-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}
.service-card {
  border-radius: 18px;
  padding: clamp(1rem, 2vw, 1.35rem);
}
.service-card h3 { color: #fff; }
.service-card p { color: var(--muted); margin: 0; }
.service-card--featured {
  border-color: rgba(255,255,255,.16);
  background: var(--panel);
}
.service-card--featured h3 { color: #fff; }
.service-kicker {
  margin: 0 0 .35rem !important;
  color: var(--accent) !important;
  text-transform: uppercase;
  letter-spacing: .05em;
  font-weight: 900;
  font-size: .76rem;
}
.service-note {
  margin-top: .7rem !important;
  color: rgba(255,255,255,.86) !important;
  font-weight: 700;
}
.service-link {
  display: inline-flex;
  width: fit-content;
  margin-top: .8rem;
  color: var(--accent);
  background: transparent;
  padding: 0 0 .08rem;
  border-radius: 0;
  border-bottom: 1px solid rgba(243,155,19,.65);
  text-decoration: none;
  font-weight: 900;
}
.service-link:hover { color: #ffad28; border-bottom-color: #ffad28; }

.portfolio-wrap {
  position: relative;
  z-index: 1;
  width: min(100%, 1240px);
  margin: 0 auto;
  border-radius: var(--radius);
  padding: clamp(1rem, 2.2vw, 1.7rem);
}
.portfolio-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 1rem;
  margin-bottom: .9rem;
}
.portfolio-head h2 { margin-bottom: .25rem; font-size: clamp(3rem, 6vw, 5.8rem); }
.portfolio-head .lead { margin: 0; }
.filter-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: .45rem;
  max-width: 640px;
}
.filter-button {
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.08);
  color: #fff;
  border-radius: 999px;
  padding: .48rem .78rem;
  font-size: .95rem;
  line-height: 1.1;
  cursor: pointer;
  transition: background .16s ease, color .16s ease, border-color .16s ease;
}
.filter-button:hover, .filter-button.is-active {
  background: var(--accent);
  color: #111;
  border-color: var(--accent);
}
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: .75rem;
  max-width: 1030px;
  margin: 0 auto;
}
.portfolio-more {
  display: flex;
  justify-content: center;
  margin-top: .95rem;
}
.portfolio-more[hidden] { display: none; }
.portfolio-item {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 1 / 1;
  min-height: 0;
  border: 0;
  border-radius: 16px;
  background: #111;
  color: #fff;
  cursor: pointer;
  padding: 0;
  text-align: left;
}
.portfolio-item img {
  width: 100%;
  height: 100%;
  min-height: 0;
  object-fit: cover;
  transition: transform .22s ease, opacity .22s ease;
}
.portfolio-item:hover img { transform: scale(1.045); opacity: .82; }
.portfolio-meta {
  position: absolute;
  inset: auto .65rem .65rem .65rem;
  display: grid;
  gap: .15rem;
  padding: .65rem;
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(0,0,0,.18), rgba(0,0,0,.72));
  text-shadow: 0 2px 12px rgba(0,0,0,.75);
}
.portfolio-meta span { color: var(--accent); font-size: .74rem; text-transform: uppercase; letter-spacing: .05em; font-weight: 900; }
.portfolio-meta strong { font-size: .9rem; line-height: 1.15; }

.contact-layout { display: flex; }
.contact-layout { justify-content: flex-start; }
.content-panel {
  width: min(100%, 625px);
  border-radius: var(--radius);
  padding: clamp(1.25rem, 3vw, 2.4rem);
}
.content-panel p { color: var(--muted); font-size: clamp(1rem, 1.55vw, 1.12rem); }
.content-panel .button { margin-top: .8rem; }

.arttu-card {
  display: grid;
  grid-template-columns: minmax(300px, 1.02fr) minmax(340px, .98fr);
  align-items: stretch;
  width: min(100%, 1180px);
  margin: 0 auto;
  overflow: hidden;
  border-radius: var(--radius);
  background: rgba(248, 245, 240, .96);
  border: 1px solid rgba(255,255,255,.08);
  box-shadow: var(--shadow);
}
.arttu-card__media {
  margin: 0;
  min-height: 100%;
  background: #ddd;
}
.arttu-card__media img {
  width: 100%;
  height: 100%;
  min-height: 100%;
  display: block;
  object-fit: cover;
  object-position: 18% center;
}
.arttu-card__copy {
  padding: clamp(1.5rem, 3vw, 2.75rem);
  color: #121212;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.arttu-card__copy .eyebrow { color: #6d6d6d; }
.arttu-card__copy h2 {
  color: #111;
  text-shadow: none;
  margin-bottom: 1rem;
}
.arttu-card__copy p {
  color: rgba(18,18,18,.84);
  font-size: clamp(1rem, 1.32vw, 1.1rem);
  max-width: 42ch;
}
.arttu-card__copy .button { margin-top: .8rem; align-self: flex-start; }

.contact-panel { width: min(100%, 620px); }
.contact-list { display: grid; gap: .6rem; margin: 1.4rem 0; }
.contact-list div {
  display: grid;
  grid-template-columns: 105px 1fr;
  gap: 1rem;
  padding-bottom: .6rem;
  border-bottom: 1px solid rgba(255,255,255,.12);
}
.contact-list dt { color: var(--accent); font-weight: 900; }
.contact-list dd { margin: 0; color: rgba(255,255,255,.9); }
.contact-list a { text-decoration: none; }
.contact-list a:hover { text-decoration: underline; }
.social-row { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 1.2rem; }
.social-row a { color: rgba(255,255,255,.86); text-decoration: none; border-bottom: 1px solid var(--accent); }
.social-row a:hover { color: #fff; }

.site-footer {
  background: #050505;
  color: rgba(255,255,255,.68);
  text-align: center;
  padding: 1rem;
  font-size: .92rem;
}
.site-footer p { margin: 0; }

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 5000;
  display: grid;
  place-items: center;
  padding: clamp(1rem, 3vw, 2.5rem);
  background: rgba(0,0,0,.92);
}
.lightbox[hidden] { display: none; }
.lightbox-stage {
  margin: 0;
  width: min(100%, 1120px);
  max-height: 86svh;
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  gap: .9rem;
}
.lightbox-media {
  min-height: 0;
  display: grid;
  place-items: center;
}
.lightbox-media img {
  max-height: 72svh;
  width: auto;
  object-fit: contain;
  border-radius: 10px;
  box-shadow: var(--shadow);
}
.lightbox-media iframe {
  width: min(100%, 980px);
  aspect-ratio: 16 / 9;
  border: 0;
  border-radius: 10px;
  box-shadow: var(--shadow);
}
.lightbox figcaption {
  width: min(100%, 980px);
  margin: 0 auto;
  color: rgba(255,255,255,.84);
}
.lightbox figcaption strong { display: block; color: #fff; font-size: 1.1rem; }
.lightbox figcaption span { display: block; color: var(--accent); font-size: .82rem; text-transform: uppercase; letter-spacing: .06em; font-weight: 900; }
.lightbox figcaption p { margin: .35rem 0 0; }
.lightbox-close, .lightbox-nav {
  position: fixed;
  border: 1px solid rgba(255,255,255,.2);
  background: rgba(0,0,0,.52);
  color: #fff;
  cursor: pointer;
}
.lightbox-close {
  top: 1rem;
  right: 1rem;
  width: 48px;
  height: 48px;
  border-radius: 999px;
  font-size: 2rem;
  line-height: 1;
}
.lightbox-nav {
  top: 50%;
  transform: translateY(-50%);
  width: 56px;
  height: 72px;
  border-radius: 12px;
  font-size: 3rem;
  line-height: .8;
}
.lightbox-nav--prev { left: 1rem; }
.lightbox-nav--next { right: 1rem; }
.lightbox-help {
  position: fixed;
  left: 50%;
  bottom: .75rem;
  transform: translateX(-50%);
  margin: 0;
  color: rgba(255,255,255,.54);
  font-size: .9rem;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .5s ease, transform .5s ease;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1099px) {
  .portfolio-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    max-width: 820px;
  }
}

@media (max-height: 830px) and (min-width: 761px) {
  .portfolio-wrap { padding: 1rem 1.35rem 1.15rem; }
  .portfolio-head { margin-bottom: .75rem; }
  .portfolio-head h2 { font-size: clamp(2.8rem, 5.2vw, 5rem); }
  .portfolio-head .lead { font-size: clamp(.98rem, 1.45vw, 1.12rem); }
  .portfolio-grid { gap: .65rem; max-width: 950px; }
  .portfolio-more { margin-top: .75rem; }
}

@media (max-height: 830px) and (min-width: 761px) and (max-width: 1099px) {
  .portfolio-grid { max-width: 740px; }
}

@media (max-width: 980px) {
  .hero-layout, .split-layout, .portfolio-head { grid-template-columns: 1fr; }
  .arttu-card { grid-template-columns: 1fr; }
  .identity-card { justify-self: start; max-width: 330px; }
  .portfolio-head { align-items: start; }
  .filter-row { justify-content: flex-start; }
}

@media (max-width: 760px) {
  :root { --header-h: 64px; }
  .site-header { min-height: var(--header-h); }
  .brand img { width: 64px; }
  .brand span { font-size: .88rem; }
  .nav-toggle { display: block; }
  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: .75rem;
    right: .75rem;
    display: grid;
    gap: .1rem;
    padding: .8rem;
    border-radius: 16px;
    background: rgba(8,8,8,.95);
    border: 1px solid rgba(255,255,255,.1);
    box-shadow: var(--shadow);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .18s ease, transform .18s ease;
  }
  .site-nav.is-open { opacity: 1; transform: translateY(0); pointer-events: auto; }
  .site-nav a { padding: .75rem .5rem; }
  .site-nav a:not(.icon-link)::after { display: none; }
  .icon-link { display: inline-flex; width: fit-content; }
  .section { padding: calc(var(--header-h) + 1.2rem) 1rem 2rem; min-height: auto; }
  .section--hero { min-height: 100svh; }
  .section--arttu, .section--yhteys, .section--palvelut { min-height: 100svh; }
  h1 { font-size: clamp(2.6rem, 13.4vw, 4rem); letter-spacing: -.045em; }
  h2 { font-size: clamp(2.7rem, 14vw, 4.2rem); }
  .lead { font-size: 1rem; }
  .identity-card { display: none; }
  .service-grid { grid-template-columns: 1fr; }
  .portfolio-wrap { padding: 1rem; }
  .portfolio-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); max-width: none; }
  .portfolio-item, .portfolio-item img { min-height: 0; }
  .portfolio-meta { inset: auto .45rem .45rem .45rem; padding: .55rem; }
  .content-panel { padding: 1.15rem; }
  .arttu-card__copy { padding: 1.15rem; }
  .arttu-card__copy p { max-width: none; }
  .arttu-card__media img { aspect-ratio: 4 / 3; height: auto; min-height: 0; object-position: 18% 28%; }
  .contact-list div { grid-template-columns: 1fr; gap: .1rem; }
  .button-row { align-items: flex-start; }
  .button { width: auto; min-width: 0; max-width: 100%; padding-inline: 1rem; }
  .lightbox-nav { width: 44px; height: 58px; font-size: 2.4rem; }
  .lightbox-nav--prev { left: .35rem; }
  .lightbox-nav--next { right: .35rem; }
  .lightbox-help { display: none; }
}

@media (max-width: 460px) {
  .brand span { display: none; }
  .portfolio-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); max-width: none; }
  .section--hero .section-bg { background-position: left center; }
  .arttu-card__media img { min-height: 0; aspect-ratio: 4 / 3; object-position: 16% 26%; }
  .section--yhteys .section-bg { background-position: center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

/* Kevyt parallax-efekti taustakuviin.
   Desktopissa taustakuva pysyy paikallaan sivua rullatessa.
   Mobiilissa ja vähennetyn liikkeen asetuksella efekti poistetaan suorituskyvyn ja käytettävyyden vuoksi. */
@media (min-width: 761px) and (prefers-reduced-motion: no-preference) {
  .section-bg {
    background-attachment: fixed;
    transform: none;
  }
}

@media (max-width: 760px), (prefers-reduced-motion: reduce) {
  .section-bg {
    background-attachment: scroll;
  }
}