/*
 * Verkkomuikku — Stitch "The Precision Current" -design system (lokaali)
 *
 * Filosofia:
 *  - Plain CSS, ei Tailwindia. Ei CDN-riippuvuuksia.
 *  - Paikalliset fontit (www/assets/fonts/).
 *  - Inline SVG -ikonit HTML:ssä (ei ikonifonttia).
 *  - "No-Line Rule" — ei 1px-bordereita sektioiden erottamiseen.
 *    Käytetään surface-hierarkiaa (surface ↔ surface-container-low).
 *  - Mobile-first, breakpointit 720px ja 1024px.
 */

/* --- Fontit ------------------------------------------------------------- */

@font-face {
  font-family: "Plus Jakarta Sans";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/plus-jakarta-sans-400.woff2") format("woff2");
}
@font-face {
  font-family: "Plus Jakarta Sans";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("../fonts/plus-jakarta-sans-500.woff2") format("woff2");
}
@font-face {
  font-family: "Plus Jakarta Sans";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("../fonts/plus-jakarta-sans-600.woff2") format("woff2");
}
@font-face {
  font-family: "Plus Jakarta Sans";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("../fonts/plus-jakarta-sans-700.woff2") format("woff2");
}
@font-face {
  font-family: "Plus Jakarta Sans";
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url("../fonts/plus-jakarta-sans-800.woff2") format("woff2");
}

@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/inter-400.woff2") format("woff2");
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("../fonts/inter-500.woff2") format("woff2");
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("../fonts/inter-600.woff2") format("woff2");
}

/* --- Design tokens ------------------------------------------------------ */

:root {
  /* Precision Current -väripaletti */
  --color-primary: #003d9b;
  --color-primary-container: #0052cc;
  --color-primary-fixed: #dae2ff;
  --color-on-primary: #ffffff;

  --color-secondary: #006970;
  --color-secondary-container: #96f1fa;
  --color-on-secondary-container: #006f77;

  --color-surface: #fcf9f8;
  --color-surface-container-lowest: #ffffff;
  --color-surface-container-low: #f6f3f2;
  --color-surface-container: #f0edec;
  --color-surface-container-high: #ebe7e7;

  --color-on-surface: #1c1b1b;
  --color-on-surface-variant: #434654;
  --color-outline-variant: #c3c6d6;

  /* Typografia */
  --font-display: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI",
    Roboto, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  /* Säteet ja varjot */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-pill: 9999px;

  --shadow-card: 0 1px 2px rgba(28, 27, 27, 0.04),
    0 4px 16px rgba(28, 27, 27, 0.06);
  --shadow-nav: 0 1px 2px rgba(28, 27, 27, 0.04);

  /* Layoutrajat */
  --container-max: 1200px;
  --article-max: 780px;

  /* Nav-korkeus (padding-top heroille) */
  --nav-height: 4.5rem;
}

/* --- Reset -------------------------------------------------------------- */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-on-surface);
  background: var(--color-surface);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
svg {
  display: block;
  max-width: 100%;
}

/* --- Saavutettavuus ----------------------------------------------------- */

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: 0.75rem 1.25rem;
  background: linear-gradient(135deg, #003d9b 0%, #0052cc 100%);
  color: #ffffff;
  text-decoration: none;
  font-weight: 600;
  border-radius: var(--radius-sm);
  z-index: 1000;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  outline: 2px solid var(--color-primary-fixed);
  outline-offset: 2px;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 2px;
}

/* --- Typografia --------------------------------------------------------- */

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  color: var(--color-on-surface);
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
  line-height: 1.15;
  font-weight: 700;
}

h1 {
  font-size: 2.25rem;
  font-weight: 800;
}

h2 {
  font-size: 1.75rem;
}

h3 {
  font-size: 1.25rem;
}

h4 {
  font-size: 1rem;
  font-weight: 600;
}

p {
  margin: 0 0 1rem;
  color: var(--color-on-surface-variant);
}

strong {
  color: var(--color-on-surface);
  font-weight: 600;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover,
a:focus {
  text-decoration: underline;
  text-underline-offset: 2px;
}

ul,
ol {
  padding-left: 1.25rem;
  margin: 0 0 1rem;
}

li {
  margin-bottom: 0.35rem;
  color: var(--color-on-surface-variant);
}

.list-plain {
  list-style: none;
  padding-left: 0;
}

.list-plain > li {
  margin-bottom: 0.75rem;
}

@media (min-width: 720px) {
  h1 {
    font-size: 3rem;
  }
  h2 {
    font-size: 2.25rem;
  }
  h3 {
    font-size: 1.5rem;
  }
}

@media (min-width: 1024px) {
  h1 {
    font-size: 3.5rem;
  }
}

/* --- Layout ------------------------------------------------------------- */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.25rem;
}

@media (min-width: 720px) {
  .container {
    padding: 0 2rem;
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 4rem;
  }
}

/* --- Nav (glass) -------------------------------------------------------- */

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: rgba(252, 249, 248, 0.8);
  -webkit-backdrop-filter: blur(12px) saturate(160%);
  backdrop-filter: blur(12px) saturate(160%);
  box-shadow: var(--shadow-nav);
}

.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: var(--nav-height);
}

.site-nav__logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  text-decoration: none;
  flex-shrink: 0;
}

.site-nav__logo:hover,
.site-nav__logo:focus {
  text-decoration: none;
}

.site-nav__links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: none;
  gap: 1.75rem;
}

.site-nav__links li {
  margin: 0;
}

.site-nav__links a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-on-surface-variant);
  text-decoration: none;
  padding: 0.5rem 0;
  transition: color 0.15s ease;
}

.site-nav__links a:hover,
.site-nav__links a:focus {
  color: var(--color-primary);
  text-decoration: none;
}

.site-nav__links a[aria-current="page"] {
  color: var(--color-primary);
  font-weight: 600;
  position: relative;
}

.site-nav__links a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: linear-gradient(135deg, #003d9b 0%, #0052cc 100%);
  border-radius: var(--radius-pill);
}

.site-nav__cta {
  flex-shrink: 0;
}

@media (min-width: 1024px) {
  .site-nav__links {
    display: flex;
  }
}

/* --- Komponentit: napit ------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.2;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, filter 0.15s ease;
  white-space: nowrap;
}

.btn:hover,
.btn:focus {
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, #003d9b 0%, #0052cc 100%);
  color: var(--color-on-primary);
  box-shadow: 0 2px 6px rgba(0, 61, 155, 0.25);
}

.btn-primary:hover,
.btn-primary:focus {
  filter: brightness(1.08);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 61, 155, 0.3);
  color: var(--color-on-primary);
}

.btn-secondary {
  background: var(--color-surface-container-high);
  color: var(--color-on-surface);
}

.btn-secondary:hover,
.btn-secondary:focus {
  background: var(--color-surface-container);
  color: var(--color-on-surface);
}

.btn-tertiary {
  background: transparent;
  color: var(--color-primary);
  padding: 0.75rem 0.25rem;
}

.btn-tertiary:hover,
.btn-tertiary:focus {
  text-decoration: underline;
  text-underline-offset: 3px;
  color: var(--color-primary);
}

/* --- Precision gradient ja chip ---------------------------------------- */

.precision-gradient {
  background: linear-gradient(135deg, #003d9b 0%, #0052cc 100%);
  color: var(--color-on-primary);
}

.chip {
  display: inline-block;
  padding: 0.375rem 0.875rem;
  background: var(--color-secondary-container);
  color: var(--color-on-secondary-container);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius-pill);
}

.section-divider {
  display: inline-block;
  width: 2.5rem;
  height: 4px;
  background: linear-gradient(135deg, #003d9b 0%, #0052cc 100%);
  border-radius: var(--radius-pill);
  margin-bottom: 1rem;
}

/* --- Kortit (ei bordereita) -------------------------------------------- */

.card {
  background: var(--color-surface-container-lowest);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-card);
}

@media (min-width: 720px) {
  .card {
    padding: 2.5rem;
  }
}

/* --- Ikonit (inline SVG, 24x24) ---------------------------------------- */

.icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon--sm {
  width: 18px;
  height: 18px;
}

.icon--lg {
  width: 32px;
  height: 32px;
}

/* --- Hero --------------------------------------------------------------- */

.hero {
  padding-top: calc(var(--nav-height) + 3rem);
  padding-bottom: 4rem;
  background: var(--color-surface);
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

.hero__title {
  margin: 1.25rem 0 1.5rem;
}

.hero__lead {
  font-size: 1.125rem;
  line-height: 1.65;
  color: var(--color-on-surface-variant);
  max-width: 34rem;
  margin-bottom: 2rem;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

.hero__visual {
  position: relative;
  aspect-ratio: 1 / 1;
  width: 100%;
  max-width: 520px;
  justify-self: center;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: linear-gradient(135deg, #003d9b 0%, #0052cc 100%);
  box-shadow: 0 20px 60px rgba(0, 61, 155, 0.2);
}

.hero__visual img,
.hero__visual svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (min-width: 720px) {
  .hero {
    padding-top: calc(var(--nav-height) + 4.5rem);
    padding-bottom: 6rem;
  }
  .hero__lead {
    font-size: 1.25rem;
  }
}

@media (min-width: 1024px) {
  .hero__grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 4rem;
  }
  .hero__visual {
    max-width: none;
  }
}

/* --- Sektiot yleisesti ------------------------------------------------- */

.section {
  padding: 4rem 0;
}

.section--alt {
  background: var(--color-surface-container-low);
}

.section__header {
  margin-bottom: 2.5rem;
}

.section__eyebrow {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

@media (min-width: 720px) {
  .section {
    padding: 6rem 0;
  }
}

/* --- Bento-grid (tuotteet) --------------------------------------------- */

.bento {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.bento__featured,
.bento__placeholder {
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  box-shadow: var(--shadow-card);
}

.bento__featured {
  background: var(--color-surface-container-lowest);
}

.bento__placeholder {
  background: linear-gradient(135deg, #003d9b 0%, #0052cc 100%);
  color: var(--color-on-primary);
  position: relative;
  overflow: hidden;
}

.bento__placeholder::after {
  content: "";
  position: absolute;
  top: -30%;
  right: -20%;
  width: 65%;
  height: 65%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.18), transparent 70%);
  pointer-events: none;
}

.bento__placeholder h3,
.bento__placeholder p,
.bento__placeholder .bento__tag {
  color: var(--color-on-primary);
  position: relative;
}

.bento__placeholder p {
  opacity: 0.92;
}

.bento__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-fixed);
  color: var(--color-primary);
  margin-bottom: 0.25rem;
}

.bento__placeholder .bento__icon {
  background: rgba(255, 255, 255, 0.18);
  color: var(--color-on-primary);
}

.bento__tag {
  display: inline-block;
  margin-top: auto;
  padding-top: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-on-surface-variant);
}

.bento__cta {
  margin-top: auto;
}

@media (min-width: 1024px) {
  .bento {
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
  }
  .bento__featured {
    padding: 3rem;
  }
  .bento__placeholder {
    padding: 2.5rem;
  }
}

/* --- Contact-sektio (etusivu) ------------------------------------------ */

.contact-section {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}

.contact-section__actions {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: flex-start;
}

.contact-section__email {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--color-primary);
}

@media (min-width: 720px) {
  .contact-section {
    grid-template-columns: 1.2fr 1fr;
    gap: 3rem;
  }
}

/* --- Yhteystiedot-sivun tietolista ------------------------------------- */

.info-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.info-list__item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin: 0;
}

.info-list__icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-primary-fixed);
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.info-list__label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-on-surface-variant);
  margin-bottom: 0.125rem;
}

.info-list__value {
  display: block;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-on-surface);
  letter-spacing: -0.01em;
}

.info-list__value a {
  color: inherit;
}

@media (min-width: 720px) {
  .info-list {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem 2rem;
  }
}

/* --- Page header (sisäsivut) ------------------------------------------- */

.page-header {
  padding-top: calc(var(--nav-height) + 3rem);
  padding-bottom: 2.5rem;
  background: var(--color-surface);
}

.page-header__eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

@media (min-width: 720px) {
  .page-header {
    padding-top: calc(var(--nav-height) + 4rem);
    padding-bottom: 3.5rem;
  }
}

/* --- Artikkeli (tietosuoja) -------------------------------------------- */

.article {
  padding: 2rem 0 5rem;
}

.article__inner {
  max-width: var(--article-max);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.article__meta {
  color: var(--color-on-surface-variant);
  font-size: 0.9375rem;
  margin-bottom: 2.5rem;
}

.article h2 {
  margin-top: 3rem;
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.article h3 {
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  font-size: 1.125rem;
}

.article p,
.article li {
  font-size: 1rem;
  line-height: 1.7;
}

.article ul {
  margin-bottom: 1.25rem;
}

.article .note {
  background: var(--color-surface-container-low);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin: 2rem 0 0;
  font-size: 0.9375rem;
  color: var(--color-on-surface-variant);
}

@media (min-width: 720px) {
  .article__inner {
    padding: 0 2rem;
  }
  .article h2 {
    font-size: 1.75rem;
  }
  .article h3 {
    font-size: 1.25rem;
  }
}

/* --- Footer ------------------------------------------------------------- */

.site-footer {
  background: var(--color-surface-container-low);
  padding: 3rem 0 2.5rem;
  margin-top: 2rem;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

.site-footer__brand {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.site-footer__logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  text-decoration: none;
}

.site-footer__meta {
  color: var(--color-on-surface-variant);
  font-size: 0.875rem;
  line-height: 1.7;
  margin: 0;
  max-width: 34rem;
}

.site-footer__meta a {
  color: var(--color-on-surface-variant);
}

.site-footer__nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.site-footer__col h4 {
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-on-surface);
  margin: 0 0 1rem;
}

.site-footer__col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-footer__col li {
  margin-bottom: 0.6rem;
}

.site-footer__col a {
  color: var(--color-on-surface-variant);
  font-size: 0.9375rem;
  text-decoration: none;
}

.site-footer__col a:hover,
.site-footer__col a:focus {
  color: var(--color-primary);
  text-decoration: underline;
}

@media (min-width: 720px) {
  .site-footer {
    padding: 4rem 0 3rem;
  }
  .site-footer__grid {
    grid-template-columns: 1.4fr 1fr;
    gap: 3rem;
    align-items: start;
  }
}

/* --- Utility ------------------------------------------------------------ */

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.muted {
  color: var(--color-on-surface-variant);
}