/* base.css — "sharp" template: precision.
 *
 * A complete, quality-gated design system (hand-rolled BEM, framework-free).
 * The build agent copies this file verbatim into a site's `style.css` and
 * overwrites ONLY the delimited brand-parameter block below — every other rule
 * ships byte-identical, which is how the fixture's Lighthouse/axe pass transfers
 * to every real build. See TEMPLATE.md for the character spec and the
 * brand-parameter contract (which properties to fill, how tints/shades derive).
 *
 * Character: flat, hard-edged, structured — grotesk type, 0-2px radii, hairline
 * borders instead of shadows, high contrast, brisk slide-in motion. Shares the
 * BEM vocabulary of the "soft" template so a site's HTML renders under either
 * stylesheet unchanged. Fonts load via <link> in the HTML head.
 */

/* ── Brand parameters (per-site) ─────────────────────────────────────────────
 * The ONLY block the build agent edits. Fill from the extracted brand (logo
 * colours, screenshot palette, tone). Keep every property; adjust its value.
 * Contrast contract: --color-text and --color-muted must hold >= 4.5:1 on
 * --color-surface and --color-surface-alt; --color-on-primary must hold >= 4.5:1
 * on --color-primary; --color-primary used as link text must hold >= 4.5:1 on
 * --color-surface. Fonts must be one of TEMPLATE.md's approved grotesk pairs. */
:root {
  --color-primary: #1a5c9e;        /* logo/brand blue — links, primary buttons, flat brand blocks */
  --color-primary-shade: #123f6d;  /* darker primary for hover/active (primary ~15% darker) */
  --color-primary-tint: #e5edf5;   /* pale block/fill tint (primary mixed ~90% white) */
  --color-on-primary: #ffffff;     /* text/icons on --color-primary blocks */
  --color-accent: #c8501c;         /* print-ink orange — underline sweeps, markers, active rules */
  --color-surface: #ffffff;        /* page background */
  --color-surface-alt: #f2f4f6;    /* cool grey background for alternating sections */
  --color-text: #14181c;           /* near-black body text (high contrast) */
  --color-muted: #47525c;          /* muted cool grey for secondary text (>= 4.5:1 on surfaces) */
  --color-border: #cfd6dc;         /* hairline border colour */

  --font-heading: 'Space Grotesk', 'Helvetica Neue', Arial, sans-serif;
  --font-body: 'IBM Plex Sans', 'Segoe UI', system-ui, -apple-system, sans-serif;
}
/* ── end Brand parameters ──────────────────────────────────────────────────── */

/* ── Fixed tokens (the template character — do not edit per site) ──────────── */
:root {
  /* Type scale 1.333 (perfect fourth), fluid via clamp; body line-height 1.5. */
  --step--1: clamp(0.8rem, 0.77rem + 0.13vw, 0.875rem);
  --step-0: clamp(1rem, 0.96rem + 0.18vw, 1.125rem);
  --step-1: clamp(1.33rem, 1.24rem + 0.42vw, 1.6rem);
  --step-2: clamp(1.78rem, 1.6rem + 0.83vw, 2.37rem);
  --step-3: clamp(2.37rem, 2.05rem + 1.5vw, 3.16rem);
  --step-4: clamp(3.16rem, 2.6rem + 2.6vw, 4.21rem);
  --step-5: clamp(3.8rem, 2.9rem + 4.2vw, 5.61rem);
  --leading-body: 1.5;
  --leading-tight: 1.05;

  /* Spacing — tighter, structured grid; section padding 4-5rem. */
  --space-3xs: 0.375rem;
  --space-2xs: 0.625rem;
  --space-xs: 0.9rem;
  --space-s: 1.25rem;
  --space-m: 2rem;
  --space-l: 3rem;
  --space-xl: 4.5rem;
  --section-pad: clamp(3rem, 2.2rem + 3vw, 5rem);
  --container-max: 74rem;

  /* Radii 0-2px everywhere — the sharp character. */
  --radius-s: 0;
  --radius-m: 2px;
  --radius-l: 2px;
  --radius-pill: 2px;

  /* Flat — no box-shadows; hairline borders carry separation. */
  --border-hair: 1px solid var(--color-border);
  --border-strong: 2px solid var(--color-text);

  /* Brisk motion, 200-250ms. */
  --ease-sharp: cubic-bezier(0.4, 0, 0.2, 1);
  --dur-reveal: 240ms;
  --dur-hover: 180ms;

  --header-h: 4.25rem;
}

/* ── Reset ───────────────────────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
}
* {
  margin: 0;
}
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: var(--leading-body);
  color: var(--color-text);
  background: var(--color-surface);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img,
picture,
svg,
video {
  display: block;
  max-width: 100%;
  height: auto;
}
input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}
a {
  color: var(--color-primary);
  text-underline-offset: 0.16em;
}
a:hover {
  color: var(--color-primary-shade);
}
h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  line-height: var(--leading-tight);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em; /* tight grotesk headings */
}
h1 {
  font-size: var(--step-4);
}
h2 {
  font-size: var(--step-3);
}
h3 {
  font-size: var(--step-2);
}
ul,
ol {
  padding-left: 1.15em;
}

/* Visible, high-contrast focus ring for keyboard users on every interactive
   element — never remove the outline without an equal-or-better replacement. */
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ── Utilities ───────────────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-s);
}
/* Accessible visually-hidden text (labels for icon-only controls, etc.). */
.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;
}
/* Skip link: off-screen until focused, then pinned top-left for keyboard users. */
.skip-link {
  position: absolute;
  left: var(--space-s);
  top: -4rem;
  z-index: 100; /* above the sticky header */
  padding: var(--space-2xs) var(--space-xs);
  background: var(--color-text);
  color: var(--color-surface);
  transition: top var(--dur-hover) var(--ease-sharp);
}
.skip-link:focus {
  top: var(--space-2xs);
  color: var(--color-surface);
}

/* Scroll-reveal: only hidden when JS is active (root .js), so no-JS keeps all
   content visible. main.js adds .is-visible as elements enter the viewport. */
.js [data-reveal] {
  opacity: 0;
  transform: translateX(-22px); /* brisk slide-in from the left */
  transition: opacity var(--dur-reveal) var(--ease-sharp), transform var(--dur-reveal) var(--ease-sharp);
}
.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3xs);
  min-height: 3rem; /* comfortable tap target */
  padding: 0.8rem 1.6rem;
  border: 2px solid transparent;
  border-radius: var(--radius-m); /* square buttons — the sharp character */
  font-weight: 700;
  font-size: var(--step-0);
  letter-spacing: 0.01em;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--dur-hover) var(--ease-sharp), color var(--dur-hover) var(--ease-sharp),
    border-color var(--dur-hover) var(--ease-sharp);
}
.button--primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-color: var(--color-primary);
}
/* Hover inverts the fill — flat, no lift, no shadow. */
.button--primary:hover {
  background: var(--color-surface);
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.button--ghost {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-border);
}
.button--ghost:hover {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-color: var(--color-primary);
}

/* ── Header / navigation ─────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50; /* above page content, below the skip link */
  background: var(--color-surface);
  border-bottom: var(--border-hair);
  transition: border-color var(--dur-hover) var(--ease-sharp);
}
/* main.js adds --stuck once scrolled off the top; strengthen the hairline. */
.site-header--stuck {
  border-bottom: var(--border-strong);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-s);
  min-height: var(--header-h);
}
.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--step-1);
  letter-spacing: -0.02em;
  color: var(--color-text);
  text-decoration: none;
  text-transform: uppercase;
}
.site-header__logo {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-m);
}
.nav__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  background: transparent;
  border: var(--border-strong);
  border-radius: var(--radius-m);
  cursor: pointer;
}
.nav__toggle-bars {
  position: relative;
  width: 1.25rem;
  height: 2px;
  background: var(--color-text);
}
.nav__toggle-bars::before,
.nav__toggle-bars::after {
  content: '';
  position: absolute;
  left: 0;
  width: 1.25rem;
  height: 2px;
  background: var(--color-text);
}
.nav__toggle-bars::before {
  top: -6px;
}
.nav__toggle-bars::after {
  top: 6px;
}
.nav__menu {
  list-style: none;
  padding: 0;
  margin: 0;
}
.nav__item {
  margin: 0;
}
.nav__link {
  display: inline-flex;
  align-items: center;
  min-height: 3rem;
  padding: 0 var(--space-2xs);
  color: var(--color-text);
  text-decoration: none;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  font-size: var(--step--1);
  border-bottom: 2px solid transparent; /* underline-sweep target */
  transition: border-color var(--dur-hover) var(--ease-sharp), color var(--dur-hover) var(--ease-sharp);
}
.nav__link:hover,
.nav__link--active {
  color: var(--color-primary);
  border-bottom-color: var(--color-accent); /* accent underline sweep */
}

/* Mobile-first: nav collapses behind the toggle; expands to a row at >= 48rem. */
@media (max-width: 47.99rem) {
  .nav__menu {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    flex-direction: column;
    gap: 0;
    padding: var(--space-2xs) var(--space-s) var(--space-s);
    background: var(--color-surface);
    border-bottom: var(--border-strong);
  }
  .nav__menu--open {
    display: flex;
  }
  .nav__link {
    width: 100%;
    border-bottom: var(--border-hair);
  }
}
@media (min-width: 48rem) {
  .nav__toggle {
    display: none;
  }
  .nav__menu {
    display: flex;
    align-items: center;
    gap: var(--space-s);
  }
}

/* ── Hero ────────────────────────────────────────────────────────────────── */
.hero {
  padding-block: var(--section-pad);
  border-bottom: var(--border-strong);
  overflow: hidden;
}
.hero__inner {
  display: grid;
  gap: var(--space-l);
  align-items: center;
}
.hero__body {
  min-width: 0; /* grid child: keep a long word from blowing out the text column */
}
.hero__kicker {
  display: inline-block;
  margin-bottom: var(--space-2xs);
  padding: var(--space-3xs) var(--space-2xs);
  background: var(--color-primary); /* bold flat block — sharp character */
  color: var(--color-on-primary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: var(--step--1);
}
.hero__title {
  font-size: var(--step-5);
  overflow-wrap: break-word;
  hyphens: auto;
  max-width: 15ch;
  text-transform: uppercase;
}
.hero__text {
  margin-top: var(--space-s);
  font-size: var(--step-1);
  color: var(--color-muted);
  max-width: 46ch;
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-m);
}
.hero__media {
  border: var(--border-strong); /* hard-edged framed hero */
  overflow: hidden;
  animation: hero-slide var(--dur-reveal) var(--ease-sharp) both;
}
.hero__art {
  width: 100%;
  height: auto;
}
@media (min-width: 56rem) {
  .hero__inner {
    grid-template-columns: 1.1fr 0.9fr;
  }
}

/* ── Section scaffolding ─────────────────────────────────────────────────── */
.section {
  padding-block: var(--section-pad);
  border-bottom: var(--border-hair); /* visible section rules — structured grid */
}
.section--alt {
  background: var(--color-surface-alt);
}
.section__head {
  max-width: 52ch;
  margin-bottom: var(--space-l);
}
.section__kicker {
  display: inline-block;
  margin-bottom: var(--space-2xs);
  padding-bottom: var(--space-3xs);
  border-bottom: 2px solid var(--color-accent); /* accent underline on the kicker */
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase; /* uppercase kicker labels — sharp character */
  letter-spacing: 0.08em;
  font-size: var(--step--1);
}
.section__title {
  font-size: var(--step-3);
  text-transform: uppercase;
}
.section__lead {
  margin-top: var(--space-s);
  color: var(--color-muted);
  font-size: var(--step-1);
}

/* ── Cards (numbered service grid — the sharp treatment) ─────────────────── */
.card-grid {
  display: grid;
  gap: 0;
  grid-template-columns: 1fr;
  border-top: var(--border-hair);
  border-left: var(--border-hair);
  counter-reset: card; /* drives the numbered ::before on each card */
}
@media (min-width: 40rem) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 60rem) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
.card {
  position: relative; /* positions the numeric counter badge */
  counter-increment: card;
  padding: var(--space-m);
  background: var(--color-surface);
  border-right: var(--border-hair);
  border-bottom: var(--border-hair);
  transition: background-color var(--dur-hover) var(--ease-sharp);
}
.card::before {
  content: counter(card, decimal-leading-zero);
  position: absolute;
  top: var(--space-s);
  right: var(--space-m);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--step-1);
  color: var(--color-border);
}
.card:hover {
  background: var(--color-surface-alt); /* flat fill shift, no lift */
}
.card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  margin-bottom: var(--space-s);
  background: var(--color-primary-tint);
  color: var(--color-primary);
  border-radius: var(--radius-m);
}
.card__title {
  font-size: var(--step-1);
  margin-bottom: var(--space-2xs);
  text-transform: uppercase;
}
.card__text {
  color: var(--color-muted);
}

/* ── Gallery ─────────────────────────────────────────────────────────────── */
.gallery {
  display: grid;
  gap: var(--space-2xs);
  grid-template-columns: 1fr;
}
@media (min-width: 40rem) {
  .gallery {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 60rem) {
  .gallery {
    grid-template-columns: repeat(3, 1fr);
  }
}
.gallery__item {
  overflow: hidden;
  border: var(--border-hair);
}
.gallery__image {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform var(--dur-hover) var(--ease-sharp);
}
.gallery__item:hover .gallery__image {
  transform: scale(1.03);
}

/* ── Testimonial ─────────────────────────────────────────────────────────── */
.testimonial {
  max-width: 46ch;
  margin-inline: auto;
  padding: var(--space-l);
  text-align: left;
  border-left: 4px solid var(--color-accent); /* hard accent rule */
  background: var(--color-surface-alt);
}
.testimonial__quote {
  font-family: var(--font-heading);
  font-size: var(--step-2);
  line-height: 1.25;
  letter-spacing: -0.02em;
}
.testimonial__author {
  display: block;
  margin-top: var(--space-s);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-primary);
}

/* ── FAQ ─────────────────────────────────────────────────────────────────── */
.faq {
  max-width: 52rem;
  margin-inline: auto;
  border-top: var(--border-hair);
}
.faq__item {
  padding: var(--space-s) 0;
  border-bottom: var(--border-hair);
}
.faq__question {
  font-size: var(--step-1);
  margin-bottom: var(--space-2xs);
  text-transform: uppercase;
}
.faq__answer {
  color: var(--color-muted);
}

/* ── Contact form (posts via mailto — no runtime dependency) ─────────────── */
.contact-form {
  display: grid;
  gap: var(--space-s);
  max-width: 40rem;
}
.contact-form__field {
  display: grid;
  gap: var(--space-3xs);
}
.contact-form__label {
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  font-size: var(--step--1);
}
.contact-form__input,
.contact-form__textarea {
  width: 100%;
  padding: 0.8rem 0.9rem;
  background: var(--color-surface);
  border: var(--border-hair);
  border-radius: var(--radius-m);
}
.contact-form__input:focus,
.contact-form__textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: inset 0 0 0 1px var(--color-primary);
}
.contact-form__textarea {
  min-height: 8rem;
  resize: vertical;
}

/* ── Footer ──────────────────────────────────────────────────────────────── */
.site-footer {
  padding-block: var(--space-xl) var(--space-l);
  background: var(--color-text);
  color: var(--color-surface);
}
.site-footer__inner {
  display: grid;
  gap: var(--space-l);
  grid-template-columns: 1fr;
}
@media (min-width: 48rem) {
  .site-footer__inner {
    grid-template-columns: repeat(3, 1fr);
  }
}
.site-footer__heading {
  font-family: var(--font-heading);
  font-size: var(--step-1);
  margin-bottom: var(--space-s);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.site-footer__link {
  display: block;
  padding: var(--space-3xs) 0;
  color: var(--color-surface);
  text-decoration: none;
}
.site-footer__link:hover {
  color: var(--color-accent);
}
.site-footer__legal {
  margin-top: var(--space-l);
  padding-top: var(--space-s);
  border-top: 1px solid color-mix(in srgb, var(--color-surface) 30%, transparent);
  color: color-mix(in srgb, var(--color-surface) 78%, transparent);
  font-size: var(--step--1);
}

/* ── Legal page ──────────────────────────────────────────────────────────── */
.legal {
  max-width: 62ch;
  margin-inline: auto;
  padding-block: var(--section-pad);
}
.legal__title {
  margin-bottom: var(--space-m);
  text-transform: uppercase;
}
.legal__body > * + * {
  margin-top: var(--space-s);
}
.legal__body h2 {
  font-size: var(--step-2);
  margin-top: var(--space-l);
  text-transform: uppercase;
}

/* ── Cookie banner (used only when a site sets cookies; main.js dismisses) ── */
.cookie-banner {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 80; /* above content, below the skip link */
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-s);
  padding: var(--space-s) var(--space-m);
  background: var(--color-surface);
  border-top: var(--border-strong);
}
.cookie-banner__text {
  flex: 1 1 16rem;
  color: var(--color-muted);
  font-size: var(--step--1);
}
.cookie-banner__actions {
  display: flex;
  gap: var(--space-2xs);
}

/* ── Demo banner (pre-contract preview marker) ───────────────────────────── */
.demo-banner {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 90; /* above the cookie banner */
  padding: var(--space-2xs) var(--space-s);
  text-align: center;
  /* near-black block, not accent: white-on-accent orange fails 4.5:1 at this
     size — the text slot uses --color-text bg so contrast is guaranteed. */
  background: var(--color-text);
  color: var(--color-surface);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: var(--step--1);
}

/* ── Error (404) page ────────────────────────────────────────────────────── */
.error-page {
  display: grid;
  place-content: center;
  gap: var(--space-s);
  min-height: 60vh;
  padding: var(--section-pad) var(--space-s);
  text-align: center;
}
.error-page__code {
  font-family: var(--font-heading);
  font-size: var(--step-5);
  color: var(--color-primary);
  letter-spacing: -0.03em;
}
.error-page__title {
  font-size: var(--step-3);
  text-transform: uppercase;
}
.error-page__text {
  color: var(--color-muted);
  max-width: 40ch;
  margin-inline: auto;
}

/* ── Motion keyframes ────────────────────────────────────────────────────── */
/* hero-slide: the hero media slides in briskly from the left on load.
   Transform-only — no opacity fade — so the hero media paints immediately and
   never delays Largest Contentful Paint. */
@keyframes hero-slide {
  from {
    transform: translateX(-28px);
  }
  to {
    transform: none;
  }
}
/* sweep-in: a brisk left-to-right wipe for optional accent underlines. */
@keyframes sweep-in {
  from {
    transform: scaleX(0);
    transform-origin: left;
  }
  to {
    transform: scaleX(1);
    transform-origin: left;
  }
}