/* ============================================================
   CSS CUSTOM PROPERTIES – Atostek-väripaletti
============================================================ */
:root {
  --color-white:      #FFFFFF;
  --color-atostek:    #84BD00;   /* Atostekin vihreä  – päätehosteväri     */
  --color-metsa:      #64A70B;   /* Metsän vihreä     – hover / sekundääri */
  --color-digi:       #0F447F;   /* Digisininen       – pääväri            */
  --color-navy:       #001D35;   /* Tumman sininen                         */
  --color-dark-grey:  #4B4F54;   /* Tummanharmaa                           */
  --color-light-grey: #B1B3B3;   /* Vaaleanharmaa                          */
  --bs-link-color:           var(--color-digi);
  --bs-link-color-rgb:       15, 68, 127;      /* #0F447F */
  --bs-link-hover-color:     var(--color-atostek);
  --bs-link-hover-color-rgb: 132, 189, 0;      /* #84BD00 */
}

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

html {
  scroll-behavior: smooth;
  font-size: 18px;
}

body {
  font-family: 'Lato', sans-serif;
  font-size: 1rem;
  line-height: 1.55;
  color: var(--color-dark-grey);
  background-color: var(--color-white);
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Lato', sans-serif;
  line-height: 1.18;
}

img { max-width: 100%; height: auto; }

a {
  text-decoration: none !important;
}

a:hover, a:focus {
  text-decoration: none !important;
}


/* ============================================================
   APULUOKKA – yläpuolella h2:ta käytettävä etiketti
============================================================ */
.section-label {
  display: inline-block;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--color-atostek);
  margin-bottom: 0.8rem;
}

/* ============================================================
   NAVIGAATIO – kiinteä, navy-taustainen
============================================================ */
#mainNav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1050;
  background-color: var(--color-navy);
  padding: 0.65rem 0;
  transition: box-shadow 0.3s ease;
}

/* Varjo, kun sivu on vieritetty */
#mainNav.nav--scrolled {
  box-shadow: 0 2px 28px rgba(0, 0, 0, 0.45);
}

/* Spexant-logo – korostetusti suurempi */
.nav-spexant-logo {
  height: 40px;
  width: auto;
}

@media (max-width: 575.98px) {
  .nav-spexant-logo { height: 30px; }
}

/* Hamburger-ikoni valkoisena */
.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255%2c255%2c255%2c0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.navbar-toggler {
  border-color: rgba(255, 255, 255, 0.22);
}

.navbar-toggler:focus {
  box-shadow: none;
}

/* Navigaatiolinkit */
.nav-link-item {
  color: rgba(255, 255, 255, 0.72) !important;
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: color 0.2s ease;
}

.nav-link-item:hover,
.nav-link-item:focus {
  color: var(--color-atostek) !important;
}

/* "Contact Us" -nappi navbarissa */
.btn-nav-contact {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background-color: var(--color-atostek);
  color: var(--color-white) !important;
  font-family: 'Lato', sans-serif;
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.52rem 1.25rem;
  border-radius: 0;                 /* ← border-radius: 0 */
  text-decoration: none;
  transition: background-color 0.25s ease;
  white-space: nowrap;
}

.btn-nav-contact:hover,
.btn-nav-contact:focus {
  background-color: var(--color-metsa);
  color: var(--color-white) !important;
}

/* ============================================================
   HERO-ALUE
   – 100vh, parallax-taustakuva, tumma overlay
   – Vasemmalle (desktop) / keskitetty (mobile)
============================================================ */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background-image: url('../wp-content/uploads/2025/12/atostek-ai-blueprintv_2-1.jpg');
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  background-attachment: fixed;           /* Parallax – desktop */
}

/* iOS / Android: fixed ei toimi luotettavasti → scroll */
@media (max-width: 767.98px) {
  #hero { background-attachment: scroll; }
}

/* Gradient-overlay luettavuuden varmistamiseksi */
#hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    125deg,
    rgba(0, 15, 35, 0.82) 0%,
    rgba(0, 29, 53, 0.67) 55%,
    rgba(15, 68, 127, 0.52) 100%
  );
  z-index: 1;
}

/* Hero-sisältö overlain päällä */
.hero-inner {
  position: relative;
  z-index: 2;
  padding-top: 100px;    /* Navbar-offset */
  padding-bottom: 5rem;
}

/* 1. Pieni tagline / kategoriaotsikko */
.hero-tagline {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--color-atostek);
  margin-bottom: 1.4rem;
  padding: 0.42rem 0;
}

/* 2. Pääotsikko */
.hero-h1 {
  color: var(--color-white);
  font-weight: 900;
  font-size: clamp(2rem, 4.5vw, 3rem);
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

/* 3. Ingressi */
.hero-lead {
  color: rgba(255, 255, 255, 0.88);
  font-weight: 300;
  font-size: clamp(1.12rem, 2.2vw, 1.32rem);
  line-height: 1.78;
  max-width: 85%;
  margin-bottom: 2.5rem;
}

/* 4a. CTA-nappi – ensisijainen (Atostekin vihreä) */
.btn-hero-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  background-color: var(--color-atostek);
  color: var(--color-white);
  font-family: 'Lato', sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  padding: 0.92rem 2.1rem;
  border: 2px solid var(--color-atostek);
  border-radius: 0;                       /* ← border-radius: 0 */
  text-decoration: none;
  transition: background-color 0.25s ease, border-color 0.25s ease,
              transform 0.2s ease;
}

.btn-hero-primary:hover,
.btn-hero-primary:focus {
  background-color: var(--color-metsa);
  border-color: var(--color-metsa);
  color: var(--color-white);
  transform: translateY(-2px);
}

/* 4b. CTA-nappi – toissijainen (outline, valkoinen) */
.btn-hero-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  background-color: transparent;
  color: var(--color-white);
  font-family: 'Lato', sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  padding: 0.92rem 2.1rem;
  border: 2px solid rgba(255, 255, 255, 0.7);
  border-radius: 0;                       /* ← border-radius: 0 */
  text-decoration: none;
  transition: background-color 0.25s ease, border-color 0.25s ease,
              transform 0.2s ease;
}

.btn-hero-outline:hover,
.btn-hero-outline:focus {
  background-color: rgba(255, 255, 255, 0.12);
  border-color: var(--color-white);
  color: var(--color-white);
  transform: translateY(-2px);
}

/* Animoitu scroll-nuoli */
.scroll-indicator {
  position: absolute;
  bottom: 2.25rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: rgba(255, 255, 255, 0.7);
  font-size: 1.8rem;
  text-decoration: none;
  line-height: 1;
  animation: bounceArrow 2s ease-in-out infinite;
}

.scroll-indicator:hover {
  color: var(--color-atostek);
}

@keyframes bounceArrow {
  0%, 100% { transform: translateX(-50%) translateY(0);     opacity: 0.65; }
  50%       { transform: translateX(-50%) translateY(12px);  opacity: 1;    }
}

/* Mobiili: hero-sisältö keskitetty */
@media (max-width: 767.98px) {
  .hero-inner { text-align: center; }
  .hero-lead  { margin-left: auto; margin-right: auto; }
  .hero-ctas  { justify-content: center; }
}

/* ============================================================
   MIKSI SPEXANT – vaaleanharmaa tausta
============================================================ */
#why {
  background-color: #EEEEEE;
  padding: 6rem 0;
}

#why h2 {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 900;
  color: var(--color-navy);
  margin-bottom: 1.5rem;
}

#why p {
  font-size: 1.08rem;
  color: var(--color-dark-grey);
  line-height: 1.82;
}

/* Spexant-frameworkin kuvitus */
.img-spexant-aside {
  width: 100%;
  max-width: 440px;
  display: block;
  margin: 0 auto;
  filter: drop-shadow(0 14px 36px rgba(15, 68, 127, 0.22));
}

/* "Learn more" -nappi */
.btn-digi {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--color-digi);
  color: var(--color-white);
  font-family: 'Lato', sans-serif;
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.8rem 1.8rem;
  border: 2px solid var(--color-digi);
  border-radius: 0;                       /* ← border-radius: 0 */
  text-decoration: none;
  margin-top: 1.75rem;
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

.btn-digi:hover,
.btn-digi:focus {
  background-color: var(--color-navy);
  border-color: var(--color-navy);
  color: var(--color-white);
}

/* ============================================================
   MITEN TÄ MUUTTAA TYÖN – valkoinen tausta
============================================================ */
#how {
  background-color: var(--color-white);
  padding: 6rem 0;
}

#how h2 {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 900;
  color: var(--color-navy);
  margin-bottom: 1.5rem;
}

#how p {
  font-size: 1.08rem;
  color: var(--color-dark-grey);
  line-height: 1.82;
}

/*
  Vibecoding-kuva:
  – ei varjoa (box-shadow poistettu)
  – ei reunoja (border poistettu)
  – ei pyöristystä (border-radius poistettu)
*/
.img-vibecoding {
  display: block;
  width: 100%;
  height: auto;
}

/* ============================================================
   MITÄ SPEXANT TEKEE – parallax-taustakuva
============================================================ */
#what {
  position: relative;
  padding: 6rem 0;
  background-image: url('https://25515720.fs1.hubspotusercontent-eu1.net/hub/25515720/hubfs/atostek-ai-blueprintv_2-1.jpg');
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  background-attachment: fixed;           /* Parallax – desktop */
}

/* Mobiili-fallback */
@media (max-width: 767.98px) {
  #what { background-attachment: scroll; }
}

/* Tumma overlay */
#what::before {
  content: '';
  position: absolute;
  inset: 0;
  background-color: rgba(0, 29, 53, 0.88);
  z-index: 1;
}

/* Sisältö overlain päällä */
.what-content {
  position: relative;
  z-index: 2;
}

#what h2 {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 900;
  color: var(--color-white);
  margin-bottom: 1rem;
}

/* Feature-kortit – border-radius säilytetään (ei nappeja) */
.feature-card {
  background-color: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 8px;
  padding: 2.1rem 1.85rem;
  height: 100%;
  transition: background-color 0.3s ease, border-color 0.3s ease,
              transform 0.3s ease;
}

.feature-card:hover {
  background-color: rgba(132, 189, 0, 0.11);
  border-color: rgba(132, 189, 0, 0.55);
  transform: translateY(-4px);
}

.feature-card-icon {
  font-size: 2.25rem;
  color: var(--color-atostek);
  display: block;
  margin-bottom: 1.15rem;
}

.feature-card h3 {
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 0.9rem;
  line-height: 1.35;
}

.feature-card p {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.75;
  margin-bottom: 0;
}

/* ============================================================
   SEURAA MEITÄ – digisininen tausta
============================================================ */
#follow {
  background-color: var(--color-digi);
  padding: 6rem 0;
}

#follow h2 {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 900;
  color: var(--color-white);
  margin-bottom: 1rem;
}

.follow-lead {
  font-size: 1.12rem;
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 2.5rem;
}

/* Lomakekentät */
.follow-form .form-label {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.95rem;
  margin-bottom: 0.35rem;
}

.follow-form .form-control {
  background-color: rgba(255, 255, 255, 0.09);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 0;                       /* ← terävä, ei pyöristystä */
  color: var(--color-white);
  font-family: 'Lato', sans-serif;
  font-size: 1rem;
  padding: 0.75rem 1rem;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.follow-form .form-control::placeholder {
  color: rgba(255, 255, 255, 0.38);
}

.follow-form .form-control:focus {
  background-color: rgba(255, 255, 255, 0.14);
  border-color: var(--color-atostek);
  box-shadow: 0 0 0 3px rgba(132, 189, 0, 0.22);
  color: var(--color-white);
  outline: none;
}

/* Submit-nappi */
.btn-submit {
  width: 100%;
  background-color: var(--color-atostek);
  color: var(--color-white);
  font-family: 'Lato', sans-serif;
  font-weight: 700;
  font-size: 0.98rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.92rem;
  border: 2px solid var(--color-atostek);
  border-radius: 0;                       /* ← border-radius: 0 */
  cursor: pointer;
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

.btn-submit:hover,
.btn-submit:focus {
  background-color: var(--color-metsa);
  border-color: var(--color-metsa);
  color: var(--color-white);
}

/* "Contact Us" -outline-nappi lomakkeen alla */
.btn-follow-outline {
  display: inline-block;
  background-color: transparent;
  color: var(--color-white);
  font-family: 'Lato', sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.85rem 2.3rem;
  border: 2px solid rgba(255, 255, 255, 0.6);
  border-radius: 0;                       /* ← border-radius: 0 */
  text-decoration: none;
  margin-top: 1.5rem;
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

.btn-follow-outline:hover,
.btn-follow-outline:focus {
  background-color: rgba(255, 255, 255, 0.12);
  border-color: var(--color-white);
  color: var(--color-white);
}

/* ============================================================
   FOOTER
============================================================ */
.footer-main {
  background-color: var(--color-navy);
  padding: 3rem 0 2.5rem;
}

/* Some-ikonit */
.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--color-digi);
  color: var(--color-white);
  font-size: 1.1rem;
  margin: 0.2rem;
  text-decoration: none;
  transition: background-color 0.25s ease, transform 0.25s ease;
}

.social-link:hover,
.social-link:focus {
  background-color: var(--color-atostek);
  color: var(--color-white);
  transform: translateY(-2px);
}

/* Copyright-rivi */
.footer-bottom {
  background-color: #00111F;
  padding: 1.1rem 0;
}

.footer-bottom p {
  color: var(--color-light-grey);
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* ============================================================
   VÄRIVIIVAEROTIN osioiden välillä
============================================================ */
.section-divider {
  height: 4px;
  background: linear-gradient(
    90deg,
    var(--color-atostek) 0%,
    var(--color-digi) 100%
  );
  border: none;
  margin: 0;
}

/* ============================================================
   PRACTICAL CONTROL – valkoinen tausta
============================================================ */
#practical-control {
  background-color: var(--color-white);
  padding: 6rem 0;
}

#practical-control h2 {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 900;
  color: var(--color-navy);
  margin-bottom: 1rem;
}

.practical-lead {
  font-size: 1.08rem;
  color: var(--color-dark-grey);
  line-height: 1.78;
  margin-bottom: 0;
}

/* --- Logo --- */
.img-practical-control {
  display: block;
  width: 100%;
  max-width: 280px;
  height: auto;
  margin: 0 auto;
  filter: drop-shadow(0 8px 24px rgba(15, 68, 127, 0.18));
}

/* --- Kortit --- */
.practical-card {
  background-color: #F5F7FA;
  border-top: 4px solid var(--color-atostek);
  padding: 2rem 1.75rem;
  width: 100%;
  transition: border-top-color 0.25s ease,
              background-color  0.25s ease;
}

.practical-card:hover {
  border-top-color: var(--color-digi);
  background-color: #EBF0F8;
}

.practical-card:hover .practical-card-icon {
  color: var(--color-digi);
}

.practical-card-icon {
  font-size: 2.25rem;
  color: var(--color-atostek);
  display: block;
  margin-bottom: 1.1rem;
  transition: color 0.25s ease;
}

.practical-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 0.75rem;
  line-height: 1.35;
}

.practical-card p {
  font-size: 0.97rem;
  color: var(--color-dark-grey);
  line-height: 1.75;
  margin-bottom: 0;
}


/* --- Korostusteksti otsikoissa --- */
.enhanced {
  color: var(--color-digi);
}