/* Sætur ehf — site styles
   Methodology: BEM. Mobile-first. Self-hostable fonts (system stack fallback). */

/* --- Tokens ---------------------------------------------------------------- */
:root {
  --color-red: #d72828;
  --color-red-dark: #b21d1d;
  --color-yellow: #f7d417;
  --color-ink: #1c1c1c;
  --color-ink-soft: #3a3a3a;
  --color-muted: #6b6b6b;
  --color-bg: #fafaf7;
  --color-bg-alt: #f1efe8;
  --color-line: #e4e1d6;
  --color-white: #ffffff;

  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-heading: "Work Sans", var(--font-body);

  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 20px;

  --shadow-sm: 0 1px 2px rgba(0,0,0,.05), 0 2px 6px rgba(0,0,0,.04);
  --shadow: 0 6px 16px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.04);
  --shadow-lg: 0 16px 40px rgba(0,0,0,.18);

  --container: 1200px;
  --pad: clamp(1rem, 4vw, 2rem);

  --step--1: clamp(0.875rem, 0.82rem + 0.25vw, 1rem);
  --step-0:  clamp(1rem, 0.94rem + 0.3vw, 1.125rem);
  --step-1:  clamp(1.125rem, 1.05rem + 0.4vw, 1.375rem);
  --step-2:  clamp(1.375rem, 1.2rem + 0.9vw, 1.75rem);
  --step-3:  clamp(1.75rem, 1.4rem + 1.8vw, 2.5rem);
  --step-4:  clamp(2.25rem, 1.7rem + 2.8vw, 3.75rem);
}

/* --- Fonts (optional self-hosted; falls back to system if files missing) -- */
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: local("Inter"), url("fonts/inter-variable.woff2") format("woff2-variations");
}
@font-face {
  font-family: "Work Sans";
  font-style: normal;
  font-weight: 500 800;
  font-display: swap;
  src: local("Work Sans"), url("fonts/work-sans-variable.woff2") format("woff2-variations");
}

/* --- Reset ---------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.6;
  color: var(--color-ink);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, picture, svg { max-width: 100%; display: block; }
h1, h2, h3, h4 { font-family: var(--font-heading); font-weight: 700; line-height: 1.15; margin: 0; letter-spacing: -0.01em; }
p { margin: 0 0 1em; }
a { color: var(--color-red); text-decoration: none; }
a:hover, a:focus-visible { text-decoration: underline; }
ul { margin: 0; padding: 0; list-style: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }

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

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--color-ink); color: var(--color-white);
  padding: .75rem 1rem; z-index: 1000;
}
.skip-link:focus { left: 1rem; top: 1rem; }

/* --- Shared -------------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5em;
  padding: .85em 1.4em;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--step-0);
  border-radius: 999px;
  transition: transform .15s ease, background-color .15s ease, color .15s ease, box-shadow .15s ease;
  text-decoration: none;
  line-height: 1;
}
.btn:hover, .btn:focus-visible { text-decoration: none; transform: translateY(-1px); }
.btn--primary { background: var(--color-red); color: var(--color-white); box-shadow: var(--shadow-sm); }
.btn--primary:hover, .btn--primary:focus-visible { background: var(--color-red-dark); color: var(--color-white); }
.btn--ghost { background: transparent; color: var(--color-ink); box-shadow: inset 0 0 0 2px var(--color-ink); }
.btn--ghost:hover, .btn--ghost:focus-visible { background: var(--color-ink); color: var(--color-white); }
.btn--large { padding: 1.1em 1.8em; font-size: var(--step-1); }

.prose p { color: var(--color-ink-soft); max-width: 65ch; }

/* --- Header -------------------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250, 250, 247, .9);
  backdrop-filter: saturate(180%) blur(8px);
  -webkit-backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--color-line);
}
.site-header__inner {
  max-width: var(--container); margin: 0 auto;
  padding: .75rem var(--pad);
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.site-header__brand {
  display: flex; align-items: center; gap: .75rem;
  color: var(--color-ink); text-decoration: none;
}
.site-header__brand:hover, .site-header__brand:focus-visible { text-decoration: none; }
.site-header__logo { width: 44px; height: auto; }
.site-header__name {
  font-family: var(--font-heading); font-weight: 800;
  font-size: var(--step-1); letter-spacing: .02em;
}
.site-header__name-sub {
  font-size: .6em; font-weight: 600;
  color: var(--color-muted); margin-left: .15em;
  vertical-align: .3em;
}

.nav-toggle {
  width: 44px; height: 44px;
  display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 5px;
  border-radius: var(--radius-sm);
}
.nav-toggle__bar {
  display: block; width: 24px; height: 2px;
  background: var(--color-ink); border-radius: 2px;
  transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.primary-nav {
  position: absolute; left: 0; right: 0; top: 100%;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-line);
  max-height: 0; overflow: hidden;
  transition: max-height .25s ease;
}
.primary-nav[data-open="true"] { max-height: 400px; }
.primary-nav__list {
  display: flex; flex-direction: column;
  padding: .5rem var(--pad) 1rem;
}
.primary-nav__link {
  display: block; padding: .85rem 0;
  color: var(--color-ink); font-weight: 600;
  border-bottom: 1px solid var(--color-line);
}
.primary-nav__link:last-child { border-bottom: 0; }
.primary-nav__link--cta { color: var(--color-red); }

@media (min-width: 760px) {
  .nav-toggle { display: none; }
  .primary-nav { position: static; max-height: none; overflow: visible; background: transparent; border: 0; }
  .primary-nav__list { flex-direction: row; gap: 2rem; padding: 0; align-items: center; }
  .primary-nav__link { padding: .25rem 0; border: 0; position: relative; }
  .primary-nav__link::after {
    content: ""; position: absolute; left: 0; right: 0; bottom: -4px;
    height: 2px; background: var(--color-red); transform: scaleX(0); transform-origin: left;
    transition: transform .2s ease;
  }
  .primary-nav__link:hover::after, .primary-nav__link:focus-visible::after { transform: scaleX(1); }
  .primary-nav__link--cta {
    padding: .7rem 1.25rem; border-radius: 999px;
    background: var(--color-red); color: var(--color-white);
  }
  .primary-nav__link--cta:hover, .primary-nav__link--cta:focus-visible {
    background: var(--color-red-dark); text-decoration: none;
  }
  .primary-nav__link--cta::after { display: none; }
}

/* --- Hero ---------------------------------------------------------------- */
.hero {
  position: relative;
  padding: clamp(3rem, 8vw, 6rem) var(--pad) clamp(3.5rem, 10vw, 7rem);
  background:
    radial-gradient(1200px 500px at 90% -10%, rgba(247, 212, 23, .35), transparent 60%),
    radial-gradient(900px 400px at -10% 110%, rgba(215, 40, 40, .12), transparent 60%),
    var(--color-bg);
  overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: auto -20% -40% auto;
  width: 60%; aspect-ratio: 1; border-radius: 50%;
  background: radial-gradient(circle, rgba(247, 212, 23, .25), transparent 70%);
  pointer-events: none;
}
.hero__inner { max-width: var(--container); margin: 0 auto; position: relative; }
.hero__eyebrow {
  display: inline-block;
  font-family: var(--font-heading); font-weight: 600;
  text-transform: uppercase; letter-spacing: .12em;
  font-size: var(--step--1); color: var(--color-red);
  margin: 0 0 1rem;
  padding: .35rem .9rem;
  background: rgba(215, 40, 40, .08);
  border-radius: 999px;
}
.hero__title {
  font-size: var(--step-4);
  max-width: 18ch;
  margin: 0 0 1rem;
}
.hero__lead {
  font-size: var(--step-1);
  color: var(--color-ink-soft);
  max-width: 55ch;
  margin: 0 0 2rem;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-bottom: 2.5rem; }
.hero__badges {
  display: flex; flex-wrap: wrap; gap: .5rem;
}
.hero__badge {
  font-size: var(--step--1); font-weight: 500;
  padding: .5rem 1rem;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: 999px;
  color: var(--color-ink-soft);
}

/* --- Sections ------------------------------------------------------------ */
.section { padding: clamp(3rem, 8vw, 6rem) var(--pad); }
.section--alt { background: var(--color-bg-alt); }
.section--quality {
  background: var(--color-ink); color: var(--color-white);
}
.section--quality .section__eyebrow { color: var(--color-yellow); }
.section--quality .prose p { color: rgba(255,255,255,.85); }
.section--contact { background: var(--color-ink); color: var(--color-white); text-align: center; }
.section--contact .section__eyebrow { color: var(--color-yellow); }
.section--contact .prose p { color: rgba(255,255,255,.85); margin-left: auto; margin-right: auto; }

.section__inner { max-width: var(--container); margin: 0 auto; }
.section__eyebrow {
  font-family: var(--font-heading); font-weight: 600;
  text-transform: uppercase; letter-spacing: .12em;
  font-size: var(--step--1); color: var(--color-red);
  margin: 0 0 .75rem;
}
.section__title {
  font-size: var(--step-3);
  max-width: 22ch;
  margin: 0 0 1.25rem;
}
.section__lead {
  font-size: var(--step-1); color: var(--color-ink-soft);
  max-width: 60ch; margin: 0 0 2.5rem;
}

/* --- Services ------------------------------------------------------------ */
.services {
  display: grid; gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}
.service {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  position: relative; overflow: hidden;
}
.service::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: var(--color-yellow);
  transform: scaleX(0); transform-origin: left;
  transition: transform .25s ease;
}
.service:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: transparent; }
.service:hover::before { transform: scaleX(1); }
.service__title { font-size: var(--step-1); margin: 0 0 .5rem; }
.service__text { color: var(--color-ink-soft); margin: 0; }

/* --- Quality badge ------------------------------------------------------- */
.quality {
  display: grid; gap: 2rem;
  grid-template-columns: 1fr;
  align-items: center;
}
@media (min-width: 820px) {
  .quality { grid-template-columns: 1.5fr 1fr; gap: 4rem; }
}
.quality__badge {
  width: min(420px, 100%);
  height: auto;
  margin: 0 auto;
  display: block;
}

/* --- Gallery ------------------------------------------------------------- */
.gallery {
  display: grid; gap: .75rem;
  grid-template-columns: repeat(2, 1fr);
}
@media (min-width: 620px) { .gallery { grid-template-columns: repeat(3, 1fr); gap: 1rem; } }
@media (min-width: 960px) { .gallery { grid-template-columns: repeat(4, 1fr); } }

.gallery__item { margin: 0; }
.gallery__btn {
  display: block; width: 100%; padding: 0;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 1;
  cursor: zoom-in;
  transition: transform .2s ease, box-shadow .2s ease;
}
.gallery__btn:hover, .gallery__btn:focus-visible {
  transform: translateY(-2px); box-shadow: var(--shadow);
}
.gallery__img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .3s ease;
}
.gallery__btn:hover .gallery__img { transform: scale(1.04); }

/* --- Contact ------------------------------------------------------------- */
.contact__content { max-width: 600px; margin: 0 auto; }
.contact .section__title { margin-left: auto; margin-right: auto; }

/* --- Footer -------------------------------------------------------------- */
.site-footer {
  padding: 2rem var(--pad);
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-line);
}
.site-footer__inner {
  max-width: var(--container); margin: 0 auto;
  text-align: center;
  color: var(--color-muted);
  font-size: var(--step--1);
}
.site-footer__text { margin: 0; }
.site-footer__link { color: var(--color-ink); }

/* --- Lightbox ------------------------------------------------------------ */
.lightbox {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(10, 10, 10, .94);
  display: grid; place-items: center;
  padding: clamp(1rem, 4vw, 3rem);
  opacity: 0; pointer-events: none;
  transition: opacity .2s ease;
}
.lightbox[data-open="true"] { opacity: 1; pointer-events: auto; }
.lightbox[hidden] { display: none; }

.lightbox__figure {
  margin: 0; max-width: min(1400px, 100%); max-height: 100%;
  display: flex; flex-direction: column; gap: .75rem; align-items: center;
}
.lightbox__figure picture, .lightbox__figure picture > * {
  max-width: 100%; max-height: 80vh; object-fit: contain;
}
.lightbox__img { border-radius: var(--radius-sm); box-shadow: var(--shadow-lg); }
.lightbox__caption { color: rgba(255,255,255,.9); font-size: var(--step--1); text-align: center; }
.lightbox__caption:empty { display: none; }

.lightbox__btn {
  position: absolute;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: rgba(255,255,255,.12);
  color: var(--color-white);
  font-size: 2rem; line-height: 1;
  display: grid; place-items: center;
  transition: background-color .15s ease;
}
.lightbox__btn:hover, .lightbox__btn:focus-visible { background: rgba(255,255,255,.25); }
.lightbox__btn--close { top: 1rem; right: 1rem; }
.lightbox__btn--prev  { left: 1rem;  top: 50%; transform: translateY(-50%); }
.lightbox__btn--next  { right: 1rem; top: 50%; transform: translateY(-50%); }

@media (max-width: 560px) {
  .lightbox__btn { width: 40px; height: 40px; font-size: 1.5rem; }
}

/* --- Motion preferences -------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}