/* ------------------------------------------------------------------
   Sattlio landing - reset + osnove
   ------------------------------------------------------------------ */
:root {
  --blue: #2563EB;
  --blue-dark: #1D4ED8;
  --ink: #0F172A;
  --text: #334155;
  --text-muted: #64748B;
  --border: #E2E8F0;
  --bg-soft: #F8FAFC;
  --radius: 12px;
  --max-width: 1080px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #FFFFFF;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

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

/* ------------------------------------------------------------------
   Header / logo
   ------------------------------------------------------------------ */
.site-header {
  padding: 20px 0;
}

.header-inner {
  display: flex;
  align-items: center;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo-mark {
  flex-shrink: 0;
  border-radius: 9px;
}

.logo-word {
  font-size: 22px;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -0.02em;
}

/* Brend detalj iz logotipa: "i" u "sattlio" je plava, ne crna */
.logo-dot-i {
  color: var(--blue);
}

/* ------------------------------------------------------------------
   Zajednički naslovi sekcija (Features / Screenshots)
   ------------------------------------------------------------------ */
.section-title {
  font-size: clamp(24px, 3.5vw, 34px);
  color: var(--ink);
  text-align: center;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
}

.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 16px;
  max-width: 52ch;
  margin: 0 auto 40px;
}

/* ------------------------------------------------------------------
   Hero
   ------------------------------------------------------------------ */
.hero {
  padding: 64px 24px 48px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.badge {
  display: inline-block;
  background: #EFF6FF;
  color: var(--blue-dark);
  border: 1px solid #DBEAFE;
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(32px, 6vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin: 0 0 20px;
  max-width: 18ch;
}

.hero-desc {
  font-size: clamp(16px, 2vw, 19px);
  color: var(--text-muted);
  max-width: 56ch;
  margin: 0 0 36px;
}

/* ------------------------------------------------------------------
   Dugmad
   ------------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--blue);
  color: #FFFFFF;
  box-shadow: 0 8px 20px -6px rgba(37, 99, 235, 0.55);
}

.btn-primary:hover {
  background: var(--blue-dark);
  transform: translateY(-1px);
  box-shadow: 0 10px 24px -6px rgba(37, 99, 235, 0.6);
}

.btn-primary:active {
  transform: translateY(0);
}

/* ------------------------------------------------------------------
   Features sekcija
   ------------------------------------------------------------------ */
.features {
  padding: 48px 24px 64px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 24px;
  text-align: left;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.feature-card:hover {
  transform: translateY(-3px);
  border-color: #C7D7FE;
  box-shadow: 0 12px 28px -12px rgba(37, 99, 235, 0.25);
}

.feature-icon {
  width: 46px;
  height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #EFF6FF;
  color: var(--blue);
  border-radius: 12px;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 17px;
  color: var(--ink);
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

.feature-card p {
  font-size: 14.5px;
  color: var(--text-muted);
  margin: 0;
}

/* ------------------------------------------------------------------
   Screenshots sekcija
   ------------------------------------------------------------------ */
.screenshots {
  padding: 16px 24px 64px;
}

.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.screenshot-frame {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: linear-gradient(160deg, #EFF6FF, #F8FAFC);
}

.screenshot-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  /* "contain" (ne "cover") - prikazuje CIJELU sliku bez sjecenja, bilo da je
     format uspravan (telefon) ili polozen (racunar/browser). Prazan prostor
     oko slike (ako format ne odgovara tacno 4:3 okviru) ispunjava pozadinski
     gradient sa .screenshot-frame - izgleda kao namjeran "uokviren" prikaz,
     ne kao greska. */
  object-fit: contain;
  padding: 14px;
  /* Mora biti IZNAD .screenshot-placeholder kad se stvarno ucita (oba su
     position:absolute na istom mjestu) - bez ovoga bi placeholder tekst
     ostao vidljiv PREKO stvarnog screenshot-a nakon sto ga dodas. */
  z-index: 2;
}

/* Dok stvarna slika ne postoji (404) ili dok se ne ubaci fajl, onerror u
   HTML-u doda ovu klasu i sakrije <img> - placeholder ispod postaje vidljiv. */
.screenshot-img.screenshot-missing {
  display: none;
}

/* Cim se slika STVARNO ucita (ne samo ne-baci-gresku, nego i uspjesno
   ucita), sakrij placeholder potpuno - sa object-fit:contain slika vise
   ne mora popunjavati citav okvir (za razliku od cover-a), pa bi bez ovoga
   placeholder tekst providio pored uspravne (telefon) slike. */
.screenshot-img.screenshot-loaded ~ .screenshot-placeholder {
  display: none;
}

.screenshot-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: #93A5C9;
}

.screenshot-placeholder span {
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

/* ------------------------------------------------------------------
   Signup sekcija
   ------------------------------------------------------------------ */
.signup {
  padding: 8px 24px 96px;
  display: flex;
  justify-content: center;
}

.signup-card {
  width: 100%;
  max-width: 560px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 40px 36px;
  text-align: center;
}

.signup-card h2 {
  font-size: clamp(22px, 3vw, 28px);
  color: var(--ink);
  margin: 0 0 10px;
  letter-spacing: -0.02em;
}

.signup-desc {
  color: var(--text-muted);
  margin: 0 0 28px;
  font-size: 15px;
}

.form-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

#email {
  flex: 1 1 240px;
  min-width: 0;
  height: 54px;
  padding: 0 18px;
  font-size: 16px;
  line-height: normal;
  font-family: inherit;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #FFFFFF;
  color: var(--ink);
  outline: none;
  appearance: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

/* Dugme mora biti iste visine kao input da par izgleda usklađeno */
.form-row .btn {
  height: 54px;
}

#email:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.18);
}

#email:invalid[data-touched="true"] {
  border-color: #DC2626;
}

.form-error {
  color: #DC2626;
  font-size: 14px;
  margin: 12px 0 0;
  text-align: left;
}

.form-success {
  margin-top: 24px;
  background: #F0FDF4;
  border: 1px solid #BBF7D0;
  color: #166534;
  padding: 16px 18px;
  border-radius: var(--radius);
  font-size: 15px;
}

.form-success p {
  margin: 0;
}

/* ------------------------------------------------------------------
   Footer
   ------------------------------------------------------------------ */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-copy,
.footer-contact {
  color: var(--text-muted);
  font-size: 14px;
}

.footer-contact a {
  color: var(--text-muted);
  font-weight: 600;
  text-decoration: none;
}

.footer-contact a:hover {
  color: var(--blue);
  text-decoration: underline;
}

.social-links {
  display: flex;
  gap: 16px;
}

.social-links a {
  color: var(--text-muted);
  display: inline-flex;
  padding: 6px;
  border-radius: 8px;
  transition: color 0.15s ease, background 0.15s ease;
}

.social-links a:hover {
  color: var(--blue);
  background: #EFF6FF;
}

/* ------------------------------------------------------------------
   Responsive
   ------------------------------------------------------------------ */
@media (max-width: 768px) {
  .features-grid {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  }

  .screenshots-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }
}

@media (max-width: 560px) {
  .hero {
    padding: 40px 20px 36px;
  }

  .features {
    padding: 32px 20px 48px;
  }

  .screenshots {
    padding: 8px 20px 48px;
  }

  .features-grid,
  .screenshots-grid {
    grid-template-columns: 1fr;
  }

  .signup-card {
    padding: 32px 22px;
  }

  .form-row {
    flex-direction: column;
  }

  /* KRITIČNO: kad se glavna osa flex-a promijeni na vertikalnu (column),
     "flex: 1 1 240px" sa #email pravila (koje na desktopu znači ŠIRINA
     240px) se preinačuje u VISINU 240px - upravo to je pravilo bag
     "email izgleda kao textarea" na mobilnom. Resetuj na auto ovdje da
     eksplicitni height: 54px (iz osnovnog #email pravila) opet vrijedi. */
  #email {
    flex-basis: auto;
    width: 100%;
  }

  .form-row .btn {
    width: 100%;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .footer-info {
    align-items: center;
  }
}