/* Fluks — components. Mobile-first: base = phone, min-width queries enhance.
   The page reads as a written offer: a margin of section headings, letter-measure text,
   ruled rows, an offer header in the hero and a signature line as the close. */

/* ---------- Header ---------- */
.site-header {
  border-block-end: var(--border-width) solid var(--color-border);
  background-color: var(--color-bg);
}

/* Phone: logo + language menu on row 1, nav on row 2 (the hero carries the action).
   Tablet: logo · nav · language in one row. Desktop: the action joins the header. */
.site-header__inner {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas:
    "logo lang"
    "nav  nav";
  align-items: center;
  gap: var(--space-1) var(--space-4);
  padding-block: var(--space-3);
}

.site-header__inner > .logo {
  grid-area: logo;
  justify-self: start;
}

.site-header__inner > .site-nav {
  grid-area: nav;
}

.site-header__inner > .lang-menu {
  grid-area: lang;
}

.site-header .site-header__cta {
  display: none;
}

@media (min-width: 48rem) {
  .site-header__inner {
    grid-template-columns: auto 1fr auto;
    grid-template-areas: "logo nav lang";
    column-gap: var(--space-8);
  }

  .site-nav {
    justify-self: end;
  }
}

@media (min-width: 64rem) {
  .site-header__inner {
    grid-template-columns: auto 1fr auto auto;
    grid-template-areas: "logo nav cta lang";
    column-gap: var(--space-6);
  }

  .site-header .site-header__cta {
    display: inline-flex;
    grid-area: cta;
  }
}

.logo {
  display: inline-flex;
  align-items: center;
  min-height: var(--target-min);
}

/* SVG logo: fixed height from tokens, width follows the aspect ratio */
.logo__img {
  block-size: var(--logo-height);
  inline-size: auto;
}

/* Nav links wrap on narrow phones — no JS, no hamburger */
.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0 var(--space-4);
}

.site-nav__link {
  display: inline-flex;
  align-items: center;
  min-height: var(--target-min);
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  text-decoration: none;
  transition: color var(--duration-fast) ease;
}

.site-nav__link[aria-current="page"] {
  color: var(--color-text);
  text-decoration: underline;
  text-decoration-color: var(--color-text);
  text-decoration-thickness: var(--border-width-strong);
  text-underline-offset: 0.5em;
}

@media (hover: hover) {
  .site-nav__link:hover {
    color: var(--color-text);
  }
}

@media (min-width: 64rem) {
  .site-nav__list {
    gap: 0 var(--space-6);
  }
}

/* ---------- Language menu (native <details>, no JS) ---------- */
.lang-menu {
  position: relative;
}

.lang-menu__toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: var(--target-min);
  padding-inline: var(--space-3);
  border: var(--border-width) solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  list-style: none;
  cursor: pointer;
  user-select: none;
  transition: border-color var(--duration-fast) ease, background-color var(--duration-fast) ease;
}

.lang-menu__toggle::-webkit-details-marker {
  display: none;
}

.lang-menu[open] .lang-menu__toggle {
  border-color: var(--color-text);
}

/* Close on an outside click without JS: while open, the summary grows an invisible layer over
   the whole viewport (below the list), so a click anywhere else is a click on the summary. */
.lang-menu[open] > .lang-menu__toggle::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: var(--z-dropdown);
  cursor: default;
}

.lang-menu__toggle:active {
  background-color: var(--color-surface);
}

@media (hover: hover) {
  .lang-menu__toggle:hover {
    border-color: var(--color-text);
  }
}

.lang-menu__icon {
  inline-size: var(--icon-size);
  block-size: var(--icon-size);
  transition: rotate var(--duration-fast) var(--ease-out);
}

.lang-menu[open] .lang-menu__icon {
  rotate: 180deg;
}

/* Overlay panel: absolute positioning is fine for a dropdown layer; it truly floats, so it has a shadow */
.lang-menu__list {
  position: absolute;
  inset-block-start: calc(100% + var(--space-2));
  inset-inline-end: 0;
  z-index: var(--z-dropdown-panel);
  display: grid;
  gap: var(--space-1);
  min-inline-size: var(--menu-min);
  padding: var(--space-2);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg);
  box-shadow: var(--shadow-menu);
  transform-origin: top right;
  transition: opacity var(--duration-fast) var(--ease-out), transform var(--duration-fast) var(--ease-out);
}

@starting-style {
  .lang-menu[open] .lang-menu__list {
    opacity: 0;
    transform: translateY(calc(-1 * var(--space-1))) scale(0.98);
  }
}

.lang-menu__link {
  display: flex;
  align-items: center;
  min-height: var(--target-min);
  padding-inline: var(--space-3);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  text-decoration: none;
}

.lang-menu__link:active {
  background-color: var(--color-surface);
}

@media (hover: hover) {
  .lang-menu__link:hover {
    background-color: var(--color-surface);
    color: var(--color-text);
  }
}

.lang-menu__link[aria-current="page"] {
  color: var(--color-accent);
  font-weight: var(--fw-semibold);
}

/* ---------- Buttons & links ---------- */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--target-min);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-sm);
  background-color: var(--color-accent);
  color: var(--color-on-accent);
  font-weight: var(--fw-semibold);
  line-height: var(--lh-tight);
  text-align: center;
  text-decoration: none;
  user-select: none;
  transition: background-color var(--duration-fast) ease, transform var(--duration-press) var(--ease-out);
}

.button:active {
  background-color: var(--color-accent-hover);
  transform: scale(var(--press-scale));
}

@media (hover: hover) {
  .button:hover {
    background-color: var(--color-accent-hover);
    color: var(--color-on-accent);
  }
}

.button--small {
  padding: var(--space-2) var(--space-4);
  font-size: var(--fs-sm);
}

.text-link {
  display: inline-flex;
  align-items: center;
  min-height: var(--target-min);
  font-weight: var(--fw-semibold);
}

/* ---------- Hero: the offer's first page ---------- */
.hero {
  padding-block: var(--space-12) calc(var(--space-section) / 2);
}

.hero__inner {
  display: grid;
  gap: var(--space-6);
}

.hero__title {
  max-width: var(--measure-title);
}

.hero__lead {
  font-size: var(--fs-lg);
  line-height: var(--lh-snug);
  max-width: var(--measure-narrow);
}

/* Offer header: the only second plane on the site, ruled in the accent like a letterhead */
.offer {
  display: grid;
  gap: var(--space-6);
  padding: var(--space-6);
  border-block-start: var(--border-width-strong) solid var(--color-accent);
  background-color: var(--color-surface);
}

.offer__action {
  inline-size: 100%;
}

@media (min-width: 48rem) {
  .hero {
    padding-block-start: var(--space-section);
  }

  .offer {
    padding: var(--space-8);
  }

  .offer__action {
    inline-size: auto;
    justify-self: start;
  }
}

/* Desktop: title across nine columns; lead and offer header side by side below it */
@media (min-width: 64rem) {
  .hero__inner {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--space-12) var(--space-8);
    align-items: start;
  }

  .hero__title {
    grid-column: 1 / span 9;
    max-width: none;
  }

  .hero__lead {
    grid-column: 1 / span 5;
  }

  .hero__inner > .offer {
    grid-column: 7 / -1;
  }
}

/* ---------- Page intro (inner pages) ---------- */
.page-intro {
  padding-block: var(--space-12) calc(var(--space-section) / 2);
}

.page-intro__inner {
  display: grid;
  gap: var(--space-6);
}

.page-intro__title {
  max-width: var(--measure-title);
}

.page-intro__lead {
  font-size: var(--fs-lg);
  line-height: var(--lh-snug);
  max-width: var(--measure-narrow);
}

.page-intro__email {
  font-size: var(--fs-xl);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-tight);
}

@media (min-width: 48rem) {
  .page-intro {
    padding-block-start: var(--space-section);
  }
}

/* ---------- Sections: the letter grid ---------- */
.section {
  padding-block: calc(var(--space-section) / 2);
}

/* Parts of the offer are divided by one hairline, placed halfway through the gap */
:is(.hero, .page-intro, .section) + .section:not(.close) {
  padding-block-start: 0;
}

:is(.hero, .page-intro, .section) + .section:not(.close) > .container {
  padding-block-start: calc(var(--space-section) / 2);
  border-block-start: var(--border-width) solid var(--color-border);
}

.letter {
  display: grid;
  gap: var(--space-6);
}

.letter__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  min-inline-size: 0;
}

/* Desktop: the heading moves into a three-column margin, content takes the rest */
@media (min-width: 64rem) {
  .letter {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    column-gap: var(--space-8);
  }

  .letter__label {
    align-self: start;
    padding-block-start: var(--space-1);
  }

  .letter__body {
    grid-column: 2;
  }
}

/* A statement opens a section; it stays a step below the margin heading */
.statement {
  font-size: var(--fs-md);
  line-height: var(--lh-snug);
  max-width: var(--measure-narrow);
}

@media (min-width: 48rem) {
  .statement {
    font-size: var(--fs-lg);
  }
}

/* Services page: the opening statement with the start/price term beside it */
.service-head {
  display: grid;
  gap: var(--space-3);
}

/* Phone: the term comes first, directly under the heading, as on the home page rows */
.service-head > .item__term {
  grid-area: auto;
  order: -1;
}

@media (min-width: 48rem) {
  .service-head {
    grid-template-columns: minmax(0, 11fr) minmax(0, 3fr);
    column-gap: var(--space-6);
    align-items: baseline;
  }

  .service-head > .item__term {
    order: 0;
    text-align: end;
  }
}

.note {
  color: var(--color-text-muted);
}

@media (min-width: 64rem) {
  .letter__label {
    font-size: var(--fs-h2);
  }
}

.subheading {
  font-size: var(--fs-base);
}

/* ---------- Ruled rows: services, steps, pairs, facts, questions ---------- */
.items,
.steps,
.pairs,
.facts,
.faq {
  display: grid;
  border-block-end: var(--border-width) solid var(--color-border);
}

.item,
.step,
.pairs__item,
.facts__row,
.faq__row {
  border-block-start: var(--border-width) solid var(--color-border);
}

/* Services on the home page: the term sits where the step terms sit */
.item {
  display: grid;
  grid-template-areas:
    "title"
    "term"
    "text"
    "meta";
  gap: var(--space-2);
  padding-block: var(--space-6);
}

.item__title {
  grid-area: title;
  font-size: var(--fs-md);
}

/* Term labels: how the work starts and what it costs, always in the same place */
.item__term {
  grid-area: term;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  font-variant-numeric: tabular-nums;
}

.item__term > span {
  display: block;
}

.pairs__title {
  font-variant-numeric: tabular-nums;
}

.item__text {
  grid-area: text;
}

.item__meta {
  grid-area: meta;
  margin-block-start: var(--space-2);
}

.item__meta-label {
  display: block;
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
}

@media (min-width: 48rem) {
  .item {
    grid-template-columns: minmax(0, 11fr) minmax(0, 3fr);
    grid-template-areas:
      "title term"
      "text  text"
      "meta  meta";
    column-gap: var(--space-6);
    align-items: baseline;
  }

  .item__term {
    text-align: end;
  }
}

/* Steps: a real sequence, so the number stays; the term sits in the same place on every row */
.steps {
  counter-reset: step;
}

.step {
  display: grid;
  grid-template-areas:
    "title"
    "term"
    "text";
  gap: var(--space-1);
  padding-block: var(--space-4);
  counter-increment: step;
}

.step__title {
  grid-area: title;
}

.step__title::before {
  content: counter(step);
  display: inline-block;
  min-inline-size: 1.5em;
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
}

.step__term {
  grid-area: term;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  font-variant-numeric: tabular-nums;
}

.step__text {
  grid-area: text;
  color: var(--color-text-muted);
}

@media (min-width: 48rem) {
  .step {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr) minmax(0, 3fr);
    grid-template-areas: "title text term";
    gap: var(--space-6);
    align-items: baseline;
  }

  .step__term {
    text-align: end;
  }
}

/* Title/text pairs: commitments, principles */
.pairs__item {
  display: grid;
  gap: var(--space-1);
  padding-block: var(--space-4);
}

.pairs__item p {
  color: var(--color-text-muted);
}

@media (min-width: 48rem) {
  .pairs__item {
    grid-template-columns: minmax(0, 2fr) minmax(0, 3fr);
    gap: var(--space-6);
    align-items: baseline;
  }
}

/* Key/value facts: offer header and company details */
.facts__row {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 3fr);
  gap: var(--space-4);
  padding-block: var(--space-3);
}

.facts dt {
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  line-height: var(--lh-base);
}

.facts dd {
  font-variant-numeric: tabular-nums;
}

.facts--offer {
  border-block-end-color: var(--color-border-strong);
}

.facts--offer .facts__row {
  border-block-start-color: var(--color-border-strong);
}

.facts--offer .facts__row:first-child {
  border-block-start: 0;
  padding-block-start: 0;
}

.facts--offer dd {
  font-weight: var(--fw-semibold);
}

/* Questions */
.faq__row {
  display: grid;
  gap: var(--space-1);
  padding-block: var(--space-4);
}

.faq dt {
  font-weight: var(--fw-semibold);
}

/* Two lists side by side (services page) */
.columns {
  display: grid;
  gap: var(--space-6);
  margin-block: var(--space-2);
}

.columns__col {
  display: grid;
  gap: var(--space-2);
  align-content: start;
}

@media (min-width: 48rem) {
  .columns {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-8);
  }
}

.plain-list {
  display: grid;
  gap: var(--space-1);
  padding-inline-start: 1.1em;
  list-style: square;
}

.plain-list li::marker {
  color: var(--color-text-muted);
}

/* ---------- Close: the line you sign under ---------- */
.close {
  padding-block: var(--space-section);
}

.close__body {
  gap: var(--space-3);
}

.close__title {
  font-size: var(--fs-xl);
  max-width: var(--measure-close);
}

.close__text {
  color: var(--color-text-muted);
}

.signature {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4) var(--space-6);
  margin-block-start: var(--space-8);
  padding-block-start: var(--space-6);
  border-block-start: var(--border-width) solid var(--color-rule);
  transition: border-color var(--duration-fast) ease;
}

.signature:focus-within {
  border-block-start-color: var(--color-accent);
}

@media (hover: hover) {
  .signature:has(.button:hover) {
    border-block-start-color: var(--color-accent);
  }
}

.signature__email {
  font-weight: var(--fw-semibold);
}

.signature__stamp {
  inline-size: var(--stamp-size);
  block-size: var(--stamp-size);
  margin-inline-start: auto;
}

/* ---------- Footer ---------- */
.site-footer {
  padding-block: var(--space-12) var(--space-8);
  border-block-start: var(--border-width) solid var(--color-border);
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
}

.site-footer__grid {
  display: grid;
  gap: var(--space-8);
}

.site-footer__brand,
.site-footer__col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2);
}

.site-footer__brand .logo__img {
  margin-block-end: var(--space-2);
}

.site-footer__title {
  color: var(--color-text);
  font-size: var(--fs-sm);
  letter-spacing: normal;
}

.site-footer a {
  color: var(--color-text-muted);
}

@media (hover: hover) {
  .site-footer a:hover {
    color: var(--color-text);
  }
}

.site-footer__links {
  display: flex;
  flex-direction: column;
}

.site-footer__links a {
  display: inline-flex;
  align-items: center;
  min-height: var(--target-min);
}

.site-footer__address {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-6);
  margin-block-start: var(--space-12);
  padding-block-start: var(--space-6);
  border-block-start: var(--border-width) solid var(--color-border);
}

@media (min-width: 48rem) {
  .site-footer__grid {
    grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) minmax(0, 1fr);
  }

  /* Short links read as one wrapping row, so the column does not tower over its neighbours */
  .site-footer__links {
    flex-direction: row;
    flex-wrap: wrap;
    column-gap: var(--space-4);
  }
}

/* ---------- 404 page (standalone, centered) ---------- */
.error-body {
  grid-template-rows: 1fr;
}

.error-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  padding: var(--space-12) var(--gutter);
  text-align: center;
}

/* The error code is set like a document number, not drawn as decoration */
.error-page__code {
  color: var(--color-text-muted);
  font-size: var(--fs-numeral);
  font-weight: var(--fw-semibold);
  line-height: var(--lh-numeral);
  letter-spacing: var(--ls-display);
  max-width: none;
}

.error-page__title {
  font-size: var(--fs-xl);
}

.error-page__lead {
  color: var(--color-text-muted);
  font-size: var(--fs-lg);
  line-height: var(--lh-snug);
  max-width: var(--measure-narrow);
}

.error-page__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-4) var(--space-6);
}

/* ---------- Print: the offer is meant to be printed and passed on ---------- */
@media print {
  .skip-link,
  .site-nav,
  .site-header__cta,
  .lang-menu,
  .button,
  .site-footer__links {
    display: none;
  }

  .offer {
    background-color: transparent;
  }

  .section,
  .close {
    padding-block: var(--space-6);
  }
}