/* B4D Gruppen, förslag från Webbpiloten.
   Identiteten är deras: loggan som fil, den gröna (#80c30a) som enda accent.
   Resten är hantverk: betong, kol, papper, ett sturdigt svenskt typsnitt. */

:root {
  --kol: #1c1b19;
  --kol-yta: #26241f;
  --papper: #f4f2ed;
  --sand: #ebe7df;
  --betong: #d9d5cc;
  --linje: #cfcac0;
  --text: #1c1b19;
  --dampad: #5c5851;
  --gron: #80c30a;
  --gron-mork: #4a7a00;
  --gron-text: #2f5200;
  --navy: #1f3b5b;
  --font-rubrik: "Familjen Grotesk", "Helvetica Neue", Arial, sans-serif;
  --font-text: "Instrument Sans", "Helvetica Neue", Arial, sans-serif;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--papper);
  color: var(--text);
  font: 400 17px/1.6 var(--font-text);
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--font-rubrik); margin: 0; text-wrap: balance; letter-spacing: -0.015em; }
h2 { font-size: clamp(2rem, 4.4vw, 3.4rem); line-height: 1.02; font-weight: 600; }
h3 { font-size: 1.25rem; font-weight: 600; line-height: 1.2; }
p { margin: 0; }

.ram { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
@media (min-width: 900px) { .ram { padding: 0 40px; } }

/* ---------- etiketter, knappar ---------- */
.etikett {
  font: 600 0.78rem/1 var(--font-text);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gron-text);
  margin-bottom: 18px;
}
.etikett--ljus { color: var(--gron); }
.ingress { font-size: 1.15rem; color: var(--dampad); max-width: 40em; margin-top: 18px; }
.ingress--ljus { color: #c9c4b8; }
.lank { color: var(--gron-text); text-decoration: underline; text-underline-offset: 3px; }
.lank--ljus { color: var(--gron); }

.knapp {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 20px; border-radius: 999px;
  font: 600 1rem/1 var(--font-text);
  text-decoration: none; white-space: nowrap;
  transition: transform .18s ease, background-color .18s ease, border-color .18s ease;
}
.knapp:active { transform: translateY(1px); }
.knapp--gron { background: var(--gron); color: #14200a; }
.knapp--gron:hover { background: #8fd41a; }
.knapp--kontur { border: 1.5px solid rgba(255,255,255,.55); color: #fff; }
.knapp--kontur:hover { border-color: #fff; background: rgba(255,255,255,.08); }
.knapp--stor { padding: 16px 26px; font-size: 1.05rem; }
.knapp:focus-visible { outline: 3px solid var(--gron); outline-offset: 3px; }

/* ---------- sidhuvud ---------- */
.topp {
  position: sticky; top: 0; z-index: 20;
  background: rgba(244,242,237,.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--linje);
}
.topp__rad { display: flex; align-items: center; gap: 24px; height: 76px; }
.topp__logga img { width: 176px; height: auto; }
.topp__nav { display: none; gap: 26px; margin-left: auto; }
.topp__nav a { text-decoration: none; font-weight: 500; color: var(--dampad); }
.topp__nav a:hover { color: var(--text); }
.topp__ring { margin-left: auto; }
@media (min-width: 900px) {
  .topp__nav { display: flex; }
  .topp__ring { margin-left: 0; }
}

/* ---------- hero ---------- */
/* Fyra lager ur en bild (webb-rorelse teknik 1). Lagren ligger absolut
   med marginal (inset -10%) så kanterna aldrig blottas när de förskjuts.
   Bara transform rörs, i en rAF per scroll. */
.hero {
  position: relative; isolation: isolate; overflow: hidden;
  min-height: min(92svh, 860px);
  display: flex; align-items: flex-end;
  color: #fff;
  background: var(--kol);
}
.lager { position: absolute; left: 0; right: 0; top: 0; bottom: 0; will-change: transform; }
/* marginal = fart x herohöjd: bilden släpar 35 %, tonen 20 % */
.lager--bild { top: -36%; bottom: -36%; }
.lager--ton { top: -22%; bottom: -22%; }
.lager--bild { z-index: 0; }
.lager--bild img { width: 100%; height: 100%; object-fit: cover; object-position: 60% 50%; }
.lager--ton {
  z-index: 1; pointer-events: none;
  background:
    linear-gradient(90deg, rgba(20,19,17,.9) 0%, rgba(20,19,17,.62) 45%, rgba(20,19,17,.18) 100%),
    linear-gradient(0deg, rgba(20,19,17,.88) 0%, rgba(20,19,17,0) 55%);
}
.lager--text { position: relative; z-index: 2; will-change: transform; }
/* Kornet: feTurbulence som data-URI, ritas en gång, multipliceras in.
   Det billigaste materialet som finns (webb-design: texturer). */
.lager--korn {
  z-index: 3; pointer-events: none; opacity: .18; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='k'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23k)'/%3E%3C/svg%3E");
}
.hero__inre { padding-top: 120px; padding-bottom: 56px; width: 100%; }
.hero__rubrik {
  font-size: clamp(2.6rem, 7vw, 5.6rem);
  line-height: .98; font-weight: 700; max-width: 12ch;
}
/* Textavtäckning (teknik 2): masken på ett HTML-element, raderna i sekvens. */
.avtack { display: block; overflow: hidden; padding-bottom: .06em; margin-bottom: -.06em; }
.avtack > span { display: block; transform: translateY(110%); transition: transform .75s cubic-bezier(.2,.7,.2,1); }
.hero__rubrik.in .avtack > span { transform: none; }
.hero__rubrik.in .avtack:nth-child(2) > span { transition-delay: .1s; }
.hero__rubrik.in .avtack:nth-child(3) > span { transition-delay: .2s; }
.avtack--gron { color: var(--gron); }
.hero__text { margin-top: 22px; max-width: 34em; font-size: 1.15rem; color: #e6e2d8; }
.hero__knappar { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.bevis {
  list-style: none; padding: 0; margin: 44px 0 0;
  display: grid; gap: 14px 40px;
  grid-template-columns: repeat(auto-fit, minmax(190px, max-content));
  border-top: 1px solid rgba(255,255,255,.18); padding-top: 22px;
}
.bevis li { display: grid; gap: 2px; }
.bevis strong { font: 700 1.6rem/1 var(--font-rubrik); font-variant-numeric: tabular-nums; }
.bevis li > span { font-size: .9rem; color: #c9c4b8; }
.bevis strong span { font: inherit; color: inherit; }

/* ---------- sektioner ---------- */
.sektion { padding: 72px 0; }
@media (min-width: 900px) { .sektion { padding: 120px 0; } }
.sektion__huvud { max-width: 46em; margin-bottom: 44px; }
.sektion--mork { background: var(--kol); color: #f4f2ed; }
.sektion--mork h2 { color: #fff; }
.sektion--sand { background: var(--sand); }

/* tjänster */
.tjanster { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.kort {
  background: #fff; border: 1px solid var(--linje); border-radius: 18px;
  padding: 28px 26px 30px;
  transition: transform .25s ease, box-shadow .25s ease;
}
.kort:hover { transform: translateY(-3px); box-shadow: 0 18px 40px -22px rgba(28,27,25,.35); }
.kort h3 { margin-top: 18px; }
.kort p { margin-top: 10px; color: var(--dampad); }
.ikon {
  width: 40px; height: 40px;
  fill: none; stroke: var(--gron-mork); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round;
}

/* projekt */
.projekt { display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 800px) {
  .projekt { grid-template-columns: 1.4fr 1fr; grid-template-rows: auto auto; }
  .projekt__bild--stor { grid-row: 1 / span 2; }
}
.projekt__bild { margin: 0; position: relative; overflow: hidden; border-radius: 18px; background: var(--kol-yta); }
.projekt__bild img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4/3; transition: transform .7s ease; }
.projekt__bild--stor img { aspect-ratio: 3/3.2; }
.projekt__bild:hover img { transform: scale(1.03); }
.projekt__bild figcaption {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 44px 22px 20px;
  background: linear-gradient(0deg, rgba(20,19,17,.85), rgba(20,19,17,0));
  display: flex; justify-content: space-between; align-items: baseline; gap: 12px;
}
.projekt__bild strong { font: 600 1.1rem/1.2 var(--font-rubrik); }
.projekt__bild span { font-size: .9rem; color: #c9c4b8; }

/* steg som staplas (teknik 4): sticky med stigande top, ren CSS.
   Rubriken är sticky bredvid på desktop så besökaren vet var hen är. */
.steg-ram { display: grid; gap: 40px; }
@media (min-width: 900px) {
  .steg-ram { grid-template-columns: .9fr 1.1fr; gap: 72px; align-items: start; }
  .steg-huvud { position: sticky; top: 110px; margin-bottom: 0; }
}
.stapel { list-style: none; padding: 0; margin: 0; display: grid; gap: 18px; }
.stapel__kort {
  position: relative;
  background: #fff; border: 1px solid var(--linje); border-radius: 18px;
  padding: 28px 28px 30px;
  box-shadow: 0 -12px 40px -24px rgba(28,27,25,.35);
}
@media (min-width: 900px) {
  .stapel__kort { position: sticky; top: calc(110px + var(--i) * 22px); min-height: 220px; }
  .stapel { padding-bottom: 60px; }
}
.steg__nr { font: 700 2.6rem/1 var(--font-rubrik); color: var(--gron-mork); font-variant-numeric: tabular-nums; }
.stapel__kort h3 { margin-top: 14px; }
.stapel__kort p { margin-top: 10px; color: var(--dampad); }

/* omdömen */
.omdomen { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.omdome {
  margin: 0; background: #fff; border-radius: 18px; padding: 28px 26px 24px;
  border: 1px solid var(--linje); display: flex; flex-direction: column; gap: 18px;
}
.omdome p { font-size: 1.05rem; line-height: 1.55; flex: 1; }
.omdome p::before { content: "“"; color: var(--gron-mork); font: 700 1.6rem/0 var(--font-rubrik); margin-right: 4px; }
.omdome footer { display: flex; justify-content: space-between; align-items: baseline; font-weight: 600; font-size: .95rem; }
.omdome footer span { font-weight: 400; color: var(--dampad); font-size: .85rem; }

/* om oss */
.om { display: grid; gap: 40px; align-items: start; }
@media (min-width: 900px) { .om { grid-template-columns: 1.2fr .8fr; gap: 72px; } }
.om__text p + p { margin-top: 14px; }
.om__text > p:not(.etikett) { color: var(--dampad); font-size: 1.1rem; }
.om__text h2 { margin-bottom: 20px; }
.om__personer { display: grid; gap: 16px; grid-template-columns: repeat(2, 1fr); }
.person { margin: 0; }
.person img { border-radius: 16px; width: 100%; aspect-ratio: 1; object-fit: cover; filter: saturate(.9); }
.person figcaption { margin-top: 12px; display: grid; }
.person span { font-size: .9rem; color: var(--dampad); }

/* kontakt */
.kontakt { display: grid; gap: 40px; align-items: start; }
@media (min-width: 900px) { .kontakt { grid-template-columns: 1.3fr .7fr; gap: 72px; } }
.kontakt .hero__knappar { margin-top: 28px; }
.kontakt__adress { font-style: normal; color: #c9c4b8; display: grid; gap: 14px; padding-top: 8px; }
.kontakt__adress strong { color: #fff; }

/* sidfot */
.fot { background: var(--kol); color: #8a857b; border-top: 1px solid rgba(255,255,255,.08); font-size: .9rem; }
.fot__rad { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; padding-top: 22px; padding-bottom: 22px; }

/* förslagsmärket, för Webbpilotens presentation */
.forslag {
  position: fixed; left: 14px; bottom: 14px; z-index: 30;
  background: var(--navy); color: #fff; font: 600 .74rem/1 var(--font-text);
  letter-spacing: .08em; text-transform: uppercase;
  padding: 9px 12px; border-radius: 8px; opacity: .85;
}

/* ---------- uppdykning ---------- */
.dyk { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
.dyk.in { opacity: 1; transform: none; }
.no-js .dyk { opacity: 1; transform: none; }

.no-js .avtack > span { transform: none; }
/* Uppdykningens ordning inuti heron */
.hero .dyk:nth-of-type(1) { transition-delay: .05s; }
.hero__text.dyk { transition-delay: .35s; }
.hero__knappar.dyk { transition-delay: .45s; }
.bevis.dyk { transition-delay: .55s; }

@media (prefers-reduced-motion: reduce) {
  .dyk { opacity: 1; transform: none; transition: none; }
  .avtack > span { transform: none; transition: none; }
  .lager { transform: none !important; will-change: auto; }
  .projekt__bild img, .kort { transition: none; }
  html { scroll-behavior: auto; }
}