/* ============================================================
   Kotkan Autotarvike, runko (reset, header, footer, portit)
   Arvot tulevat AINA tokens.css:stä. Ei kovakoodattuja värejä.
   ============================================================ */

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html {
  scroll-behavior: smooth;
  /* Ankkurikohde pysahtyy TASAN headerin alareunaan. Aiempi +1.5rem jatti
     edellisen luvun kaistaleen nakyviin, ja kun luvut ovat eri varisia,
     se lukee vaarana raitana tumman headerin alla. */
  scroll-padding-top: var(--header-h);
  -webkit-text-size-adjust: 100%;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  min-height: 100svh;
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--text);
  background-color: var(--ground-deep);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, picture, svg, video, canvas { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
ul, ol { list-style: none; padding: 0; }

::selection { background: var(--brass); color: #1a1206; }

:where(a, button, summary, input, textarea, select, iframe, [tabindex]):focus-visible {
  outline: 2px solid var(--focus-ring, var(--brass-bright));
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- typografia ---------- */
/* FONTTIROOLI (lukittu): Clash Display kantaa vasta isona, sitä käytetään VAIN
   luku- ja sivuotsikoissa. Pienet otsikot ovat Hanken Grotesk 600. Globaali
   h1,h2,h3 → display rikkoisi tämän roolin. */
h1, h2, h3 {
  font-weight: 600;
  line-height: var(--lh-heading);
  letter-spacing: -0.008em;
  text-wrap: balance;
}
.hero__title,
.pagehead__title,
.gate__title,
.ledger__name {
  font-family: var(--font-display);
  letter-spacing: var(--tracking-heading);
}
p { max-width: var(--measure); }

.label {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: var(--fs-label);
  text-transform: uppercase;
  letter-spacing: var(--tracking-label);
  color: var(--chapter-accent, var(--brass));
}
.label--muted { color: var(--chapter-faint, var(--text-faint)); }

.lead {
  font-size: var(--fs-lead);
  color: var(--chapter-muted, var(--text-muted));
}

/* ---------- apuluokat ---------- */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0;
  margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap;
}

.shell {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.shell--wide { max-width: var(--container-wide); }
.shell--narrow { max-width: var(--container-narrow); }

.skip-link {
  position: absolute; top: -100px; left: var(--gutter); z-index: 999;
  background: var(--brass); color: #1a1206;
  padding: 0.75rem 1.25rem;
  font-family: var(--font-mono); font-size: var(--fs-label);
  text-transform: uppercase; letter-spacing: var(--tracking-label);
  transition: top var(--dur-fast) var(--ease-out);
}
.skip-link:focus { top: 1rem; }

/* ---------- rae (materiaalitunne, ei koriste) ---------- */
.grain {
  position: fixed; inset: 0; z-index: var(--z-grain); pointer-events: none;
  opacity: 0.045; mix-blend-mode: soft-light;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.82' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 140px 140px;
}

/* ============================================================
   HEADER, Lasinen brandisiipi
   Lasiefekti kuuluu vain rajattuun tunnuskantajaan. Navigaatio
   on vapaa typografinen kisko, ja puhelin sen viimeinen linkki.
   ============================================================ */
.header-wing {
  position: absolute;
  inset: 0 0 auto;
  z-index: 60;
  display: grid;
  grid-template-columns: minmax(340px, 520px) 1fr;
  align-items: start;
  column-gap: clamp(40px, 6vw, 96px);
  padding: 18px clamp(20px, 4vw, 64px) 0 0;
  pointer-events: none;
}

.header-wing__brand {
  position: relative;
  isolation: isolate;
  pointer-events: auto;
  min-height: 120px;
  display: flex;
  align-items: center;
  padding: 20px 58px 20px clamp(24px, 4vw, 64px);
  border-radius: 0 var(--radius-soft) var(--radius-soft) 0;
  background:
    linear-gradient(
      112deg,
      color-mix(in srgb, var(--ink) 78%, transparent) 0%,
      color-mix(in srgb, var(--ink) 52%, transparent) 62%,
      color-mix(in srgb, var(--petrol) 42%, transparent) 100%
    );
  box-shadow:
    inset 0 0 0 1px color-mix(in srgb, var(--paper) 22%, transparent),
    inset 0 -1px 0 color-mix(in srgb, var(--brass) 38%, transparent),
    0 18px 48px rgb(0 0 0 / 24%);
  filter: drop-shadow(0 18px 24px rgb(0 0 0 / 22%));
  backdrop-filter: blur(18px) saturate(128%) brightness(0.86);
  -webkit-backdrop-filter: blur(18px) saturate(128%) brightness(0.86);
  clip-path: polygon(
    0 0,
    calc(100% - 36px) 0,
    100% 50%,
    calc(100% - 36px) 100%,
    0 100%
  );
}

.header-wing__brand::before {
  content: "";
  position: absolute;
  z-index: 1;
  inset: 1px 36px auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--paper) 46%, transparent), transparent);
  pointer-events: none;
}

.header-wing__brand img {
  position: relative;
  z-index: 2;
  display: block;
  width: clamp(300px, 27vw, 392px);
  height: auto;
}

/* Hillitty takomo-kimallus: brass-valo pyyhkaisee siiven yli harvakseltaan (elo, ei hairitse).
   Andy 2026-07-23. Reduced-motionissa pois. Parent clip-path rajaa pyyhkaisyn siiven muotoon. */
.header-wing__brand::after {
  content: "";
  position: absolute; inset: 0; z-index: 1;
  pointer-events: none;
  background: linear-gradient(112deg, transparent 34%,
    color-mix(in srgb, var(--brass-bright) 24%, transparent) 50%, transparent 64%);
  transform: translateX(-45%);
  opacity: 0;
}
@media (prefers-reduced-motion: no-preference) {
  .header-wing__brand::after { animation: brand-sheen 9s ease-in-out 1.4s infinite; }
}
@keyframes brand-sheen {
  0%, 72% { transform: translateX(-45%); opacity: 0; }
  84% { opacity: 0.85; }
  100% { transform: translateX(125%); opacity: 0; }
}

.header-wing__nav {
  pointer-events: auto;
  justify-self: end;
  margin-top: 27px;
  display: flex;
  align-items: center;
  gap: 24px;
  padding-bottom: 11px;
  border-bottom: 1px solid color-mix(in srgb, var(--brass) 38%, transparent);
  white-space: nowrap;
}

.header-wing__nav a {
  position: relative;
  min-width: 44px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.035em;
  text-decoration: none;
  text-shadow: 0 2px 18px rgb(0 0 0 / 68%);
  transition: color var(--dur-fast) var(--ease-out);
}

.header-wing__nav a::after {
  content: "";
  position: absolute;
  inset: auto 0 -12px;
  height: 1px;
  background: var(--brass);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-mid) var(--ease-out);
}

.header-wing__nav a:hover,
.header-wing__nav a[aria-current="page"] { color: var(--brass-bright); }
.header-wing__nav a:hover::after,
.header-wing__nav a[aria-current="page"]::after { transform: scaleX(1); }

.header-wing__nav .header-wing__phone {
  min-width: 0;
  margin-left: 6px;
  padding-left: 20px;
  border-left: 1px solid color-mix(in srgb, var(--brass) 48%, transparent);
  color: var(--brass);
  font-family: var(--font-mono);
  font-size: 0.88rem;
}

/* Alisivujen avaukset ovat luu- ja pellavapintaisia. Sama vapaa
   navigointikisko vaihtaa niillä musteeseen, jotta rakenne säilyy
   mutta teksti ei nojaa pelkkään varjoon kontrastin saamiseksi. */
.page-valikoima .header-wing__nav a,
.page-palvelut .header-wing__nav a {
  color: var(--ink);
  text-shadow: 0 1px 0 rgb(255 255 255 / 30%);
}

.page-valikoima .header-wing__nav,
.page-valikoima .header-wing__brand {
  --focus-ring: var(--brass-deep);
}

.page-palvelut .header-wing__nav,
.page-palvelut .header-wing__brand {
  --focus-ring: var(--brass-linen);
}

.page-valikoima .header-wing__nav a:hover,
.page-valikoima .header-wing__nav a[aria-current="page"],
.page-valikoima .header-wing__nav .header-wing__phone { color: var(--brass-deep); }

.page-palvelut .header-wing__nav a:hover,
.page-palvelut .header-wing__nav a[aria-current="page"],
.page-palvelut .header-wing__nav .header-wing__phone { color: var(--brass-linen); }

.mobile-nav { display: none; }

.site-header a:focus-visible,
.site-header summary:focus-visible {
  outline: 2px solid var(--focus-ring, var(--brass-bright));
  outline-offset: 4px;
}

@supports not (backdrop-filter: blur(1px)) {
  .header-wing__brand { background: color-mix(in srgb, var(--ink) 94%, transparent); }
}

@media (max-width: 1040px) {
  .header-wing {
    grid-template-columns: minmax(0, 420px) 52px;
    justify-content: space-between;
    gap: 8px;
    padding: 12px;
  }

  .header-wing__brand {
    min-width: 0;
    min-height: 68px;
    padding: 14px 36px 14px 16px;
    clip-path: polygon(0 0, 92% 0, 100% 50%, 92% 100%, 0 100%);
  }

  .header-wing__brand img { width: min(clamp(214px, 38vw, 300px), 72vw); }
  .header-wing__nav { display: none; }

  .mobile-nav {
    display: block;
    pointer-events: auto;
  }

  .mobile-nav summary {
    position: relative;
    width: 52px;
    height: 52px;
    display: grid;
    place-items: center;
    list-style: none;
    border-radius: var(--radius-soft);
    background: color-mix(in srgb, var(--ink) 84%, transparent);
    box-shadow:
      inset 0 1px 0 color-mix(in srgb, var(--paper) 24%, transparent),
      0 12px 28px rgb(0 0 0 / 26%);
    backdrop-filter: blur(14px) saturate(120%);
    -webkit-backdrop-filter: blur(14px) saturate(120%);
    cursor: pointer;
  }

  .mobile-nav summary::-webkit-details-marker { display: none; }

  .mobile-nav__bars,
  .mobile-nav__bars::before,
  .mobile-nav__bars::after {
    display: block;
    width: 22px;
    height: 1.5px;
    background: var(--paper);
  }

  .mobile-nav__bars {
    position: relative;
    background: transparent;
  }

  .mobile-nav__bars::before,
  .mobile-nav__bars::after {
    content: "";
    position: absolute;
    left: 0;
    transition: transform var(--dur-fast) var(--ease-out);
  }

  .mobile-nav__bars::before { transform: translateY(-4px); }
  .mobile-nav__bars::after { transform: translateY(4px); }
  .mobile-nav[open] .mobile-nav__bars::before { transform: rotate(45deg); }
  .mobile-nav[open] .mobile-nav__bars::after { transform: rotate(-45deg); }

  .mobile-nav[open] nav {
    position: absolute;
    z-index: 2;
    top: calc(20px + clamp(68px, 12vw, 100px));
    right: 12px;
    left: auto;
    width: min(420px, calc(100vw - 24px));
    display: grid;
    padding: 8px 16px 16px;
    border: 1px solid color-mix(in srgb, var(--paper) 18%, transparent);
    border-radius: var(--radius-soft);
    background: color-mix(in srgb, var(--ink) 97%, transparent);
    box-shadow:
      inset 0 1px 0 color-mix(in srgb, var(--paper) 20%, transparent),
      var(--shadow-plate);
  }

  .mobile-nav nav a {
    min-height: 52px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid color-mix(in srgb, var(--paper) 12%, transparent);
    color: var(--paper);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
  }

  .mobile-nav nav a[aria-current="page"] { color: var(--brass-bright); }
  .mobile-nav nav .mobile-nav__phone {
    border-bottom: 0;
    color: var(--brass);
    font-family: var(--font-mono);
    font-size: 0.88rem;
  }
}

/* ============================================================
   PORTIT, sivunvaihdon kerrostuma (View Transitions API)
   Uusi sivu laskeutuu vanhan päälle levynä; brändimerkki ei
   välähdä vaan pysyy ankkurina. Selaimissa joissa tukea ei ole,
   navigointi toimii normaalisti ilman mitään lisäkoodia.
   ============================================================ */
@view-transition { navigation: auto; }

@keyframes gate-under {
  to { transform: translateY(-2.5vh) scale(0.985); opacity: 0; filter: brightness(0.45); }
}
@keyframes gate-over {
  from { transform: translateY(3vh); clip-path: inset(100% 0 0 0); }
  to   { transform: translateY(0);   clip-path: inset(0 0 0 0); }
}
@keyframes gate-seam {
  0%   { transform: scaleX(0); opacity: 0; }
  30%  { transform: scaleX(1); opacity: 1; }
  100% { transform: scaleX(1); opacity: 0; }
}

::view-transition-old(root) {
  animation: gate-under var(--dur-gate) var(--ease-inout) both;
  z-index: 1;
}
::view-transition-new(root) {
  animation: gate-over var(--dur-gate) var(--ease-inout) both;
  z-index: 2;
}
::view-transition-group(brand-mark) { z-index: 3; }
::view-transition-old(page-seam),
::view-transition-new(page-seam) { animation: none; }

/* messinkisauma joka vetäytyy uuden levyn etureunassa */
.gate-seam {
  position: fixed; left: 0; right: 0; top: 0; height: 1px; z-index: var(--z-gate);
  background: linear-gradient(90deg, transparent, var(--brass-bright), transparent);
  transform-origin: left; transform: scaleX(0); opacity: 0; pointer-events: none;
}
html.is-gating .gate-seam { animation: gate-seam var(--dur-gate) var(--ease-inout) both; }

@media (prefers-reduced-motion: reduce) {
  ::view-transition-old(root),
  ::view-transition-new(root),
  ::view-transition-group(brand-mark),
  ::view-transition-old(brand-mark),
  ::view-transition-new(brand-mark) { animation: none; }
  html.is-gating .gate-seam { animation: none; }
}

/* Lukuedistymäpalkki poistettiin tietoisesti (5.6 ultran katselmus): se on
   premium-templaattien vakiokoriste eikä tuo tälle sivustolle mitään. Sivulla on
   jo oma signature-momenttinsa. */

/* ============================================================
   FOOTER, neljän sarakkeen brandimalli Kotkan tokeneilla
   ============================================================ */
.site-footer {
  position: relative;
  color: var(--text-muted);
  border-top: 1px solid var(--line);
  background:
    radial-gradient(72% 130% at 0% 0%,
      color-mix(in srgb, var(--brass) 10%, transparent) 0%,
      transparent 62%),
    var(--ground-deep);
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 1px;
  background: linear-gradient(90deg,
    var(--brass-bright),
    color-mix(in srgb, var(--brass) 42%, transparent) 42%,
    transparent 88%);
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1.2fr) minmax(0, 1fr);
  gap: clamp(2rem, 4vw, 4rem);
  padding-block: clamp(3.5rem, 7vw, 6rem) clamp(2.5rem, 5vw, 4rem);
}
.footer-col { min-width: 0; }
.footer-brand {
  display: block;
  width: min(100%, clamp(250px, 27vw, 350px));
  height: auto;
}
.footer-tagline {
  max-width: 34ch;
  margin-top: var(--sp-5);
  color: var(--text-muted);
  font-size: var(--fs-small);
  line-height: 1.6;
}
.footer-col h3 {
  margin-bottom: var(--sp-4);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: 500;
  line-height: 1.4;
  text-transform: uppercase;
  letter-spacing: var(--tracking-label);
  color: var(--brass-bright);
}
.footer-col > a,
.footer-col > span {
  display: flex;
  width: fit-content;
  min-height: 44px;
  align-items: center;
  padding-block: 0.35rem;
  color: var(--text-muted);
  font-size: var(--fs-small);
  line-height: 1.45;
  text-align: left;
  text-decoration: none;
  overflow-wrap: anywhere;
  transition: color var(--dur-fast) var(--ease-out);
}
.footer-col > a:hover,
.footer-col > a:focus-visible,
.footer-col > a[aria-current="page"] {
  color: var(--brass-bright);
}
.footer-whatsapp { gap: 0.65rem; }
.footer-whatsapp__icon {
  width: 22px;
  height: 22px;
  flex: none;
  opacity: 0.86;
}
.footer-bottom { border-top: 1px solid var(--line); }
.footer-bottom-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--sp-3) var(--sp-6);
  padding-block: var(--sp-5);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  line-height: 1.6;
  color: var(--text-faint);
}
.fb-left,
.fb-right {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}
.fb-right { text-align: right; }
.fb-sub { color: var(--text-muted); }
.footer-bottom-inner a {
  color: var(--text);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--dur-fast) var(--ease-out);
}
.footer-bottom-inner a:hover,
.footer-bottom-inner a:focus-visible { color: var(--brass-bright); }

@media (max-width: 1100px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .footer-bottom-inner {
    justify-content: center;
    text-align: center;
  }
  .fb-left,
  .fb-right {
    width: 100%;
    align-items: center;
    text-align: center;
  }
}

@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   KONTAKTIKUPLA (kelluva), puhelin · sähköposti · WhatsApp
   Pohja: tehtaan ssfcb-komponentti, tyylitelty brändiin.
   ============================================================ */
.ssfcb {
  display: none;
  position: fixed;
  right: clamp(14px, 2.4vw, 28px);
  bottom: max(clamp(14px, 2.4vw, 28px), calc(env(safe-area-inset-bottom) + 10px));
  z-index: var(--z-bubble);
  transition: opacity var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}
.ssfcb[data-ssfcb-ready="true"] { display: block; }

.ssfcb__toggle {
  position: relative;
  width: 66px; height: 66px; border-radius: var(--radius-pill);
  display: grid; place-items: center;
  background: radial-gradient(circle at 32% 28%, var(--brass-bright), var(--brass) 58%, var(--brass-deep));
  box-shadow: var(--shadow-lift), 0 0 0 1px rgba(240, 220, 190, 0.22) inset;
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
}
.ssfcb__toggle:hover { transform: translateY(-2px); box-shadow: var(--shadow-plate), var(--glow-brass); }
.ssfcb__toggle::after {
  content: ""; position: absolute; inset: -6px; border-radius: inherit;
  border: 1px solid color-mix(in srgb, var(--brass) 40%, transparent);
  opacity: 0; transform: scale(0.9);
  transition: opacity var(--dur-mid) var(--ease-out), transform var(--dur-mid) var(--ease-out);
}
.ssfcb__toggle:hover::after { opacity: 1; transform: scale(1); }
.ssfcb__toggle-image { width: 30px; height: 30px; filter: brightness(0) saturate(100%) invert(6%) sepia(20%) saturate(900%) hue-rotate(3deg); }

.ssfcb__panel {
  position: absolute; right: 0; bottom: calc(66px + 16px);
  width: min(360px, calc(100vw - 2 * clamp(14px, 2.4vw, 28px)));
  background: var(--ground-raise);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-plate);
  padding: var(--sp-6);
  max-height: calc(100svh - 124px - env(safe-area-inset-bottom));
  overflow-y: auto;
  overscroll-behavior: contain;
  opacity: 0; transform: translateY(10px) scale(0.98);
  transition: opacity var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}
.ssfcb__panel[hidden] { display: none; }
.ssfcb.is-open .ssfcb__panel { opacity: 1; transform: none; }

.ssfcb__header { position: relative; margin-bottom: var(--sp-4); padding-right: 1.75rem; }
.ssfcb__title { font-family: var(--font-display); font-size: 1.35rem; font-weight: 600; }
.ssfcb__subtitle { font-size: 1rem; color: var(--text-muted); }
.ssfcb__close {
  position: absolute; top: -6px; right: -6px; width: 32px; height: 32px;
  display: grid; place-items: center; font-size: 1.3rem; line-height: 1;
  color: var(--text-faint);
}
.ssfcb__close:hover { color: var(--text); }

.ssfcb__content { display: grid; gap: 1px; background: var(--line-soft); border: 1px solid var(--line-soft); }
.ssfcb__item {
  display: flex; align-items: center; gap: 0.85rem;
  padding: 1rem 0.95rem; background: var(--ground);
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}
.ssfcb__item:hover { background: var(--ground-edge); color: var(--brass-bright); }
.ssfcb__icon-wrap {
  width: 36px; height: 36px; flex: none; display: grid; place-items: center;
  border: 1px solid var(--line); background: var(--ground-deep);
}
.ssfcb__icon { width: 22px; height: 22px; opacity: 0.9; }
.ssfcb__label { font-family: var(--font-mono); font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.1em; }
.ssfcb__hint { display: block; font-family: var(--font-body); font-size: 1rem; letter-spacing: 0; text-transform: none; color: var(--text-faint); }
.ssfcb__screen-reader {
  position: absolute; width: 1px; height: 1px; padding: 0;
  margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap;
}

@media (max-width: 520px) {
  .ssfcb__toggle { width: 60px; height: 60px; }
  .ssfcb__panel {
    bottom: calc(60px + 14px);
    max-height: calc(100svh - 104px - env(safe-area-inset-bottom));
  }
}