:root {
  --altn-blue: #1fa4dc;
  --altn-dark-blue: #0878ae;
  --altn-black: #050505;
  --altn-light: #f4f8fb;
  --altn-white: #ffffff;
  --altn-gray: #5f6972;
  --altn-border: #d8e5ec;
  --shadow: 0 18px 45px rgba(0, 0, 0, 0.10);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--altn-black);
  background: linear-gradient(180deg, #ffffff 0%, var(--altn-light) 100%);
  line-height: 1.6;
}

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.narrow { width: min(760px, calc(100% - 40px)); }

.site-header {
  background: var(--altn-white);
  border-bottom: 1px solid var(--altn-border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 0;
}

.logo { width: min(360px, 100%); height: auto; display: block; }
.logo-link { flex: 0 1 380px; }

.main-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.nav-button {
  display: inline-block;
  padding: 10px 15px;
  border: 2px solid var(--altn-blue);
  border-radius: 999px;
  color: var(--altn-dark-blue);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.92rem;
  transition: all 0.2s ease;
}

.nav-button:hover,
.nav-button.active {
  background: var(--altn-blue);
  color: var(--altn-white);
}

.hero {
  padding: 80px 0 54px;
  background: radial-gradient(circle at top right, rgba(31, 164, 220, 0.16), transparent 42%);
}

.hero-card {
  background: var(--altn-white);
  border-radius: 28px;
  padding: clamp(34px, 6vw, 70px);
  box-shadow: var(--shadow);
  border-left: 10px solid var(--altn-blue);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--altn-dark-blue);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

h1 {
  margin: 0;
  font-size: clamp(2.2rem, 5vw, 4.7rem);
  line-height: 0.98;
  letter-spacing: -0.05em;
}

.welcome-message {
  max-width: 760px;
  margin: 24px 0 0;
  font-size: clamp(1.12rem, 2vw, 1.4rem);
  color: var(--altn-gray);
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }

.primary-button,
.secondary-button {
  display: inline-block;
  border-radius: 12px;
  padding: 13px 22px;
  text-decoration: none;
  font-weight: 800;
  border: 0;
  cursor: pointer;
  font-size: 1rem;
}

.primary-button { background: var(--altn-blue); color: var(--altn-white); }
.primary-button:hover { background: var(--altn-dark-blue); }
.secondary-button { background: var(--altn-black); color: var(--altn-white); }

.content-preview { padding: 26px 0 70px; }
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }

.info-card,
.contact-card {
  background: var(--altn-white);
  border: 1px solid var(--altn-border);
  border-radius: 20px;
  padding: 28px;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.05);
}

.info-card h2 { margin: 0 0 8px; font-size: 1.3rem; }
.info-card p { margin: 0; color: var(--altn-gray); }

.page-hero { padding: 64px 0 28px; text-align: center; }
.page-hero p { color: var(--altn-gray); font-size: 1.1rem; }
.contact-section { padding: 20px 0 72px; }

.contact-form { display: grid; gap: 12px; }
.contact-form label { font-weight: 800; }
.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--altn-border);
  border-radius: 10px;
  padding: 13px 14px;
  font: inherit;
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: 3px solid rgba(31, 164, 220, 0.25);
  border-color: var(--altn-blue);
}
.form-button { margin-top: 8px; justify-self: start; }
.form-note { color: var(--altn-gray); font-size: 0.92rem; margin-bottom: 0; }

.site-footer {
  background: var(--altn-black);
  color: var(--altn-white);
  padding: 22px 0;
  text-align: center;
}
.site-footer p { margin: 0; }



/* Shared content-page template styles */
.template-content {
  padding: 20px 0 72px;
}

.two-column-layout {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(260px, 1fr);
  gap: 24px;
  align-items: start;
}

.content-block,
.sidebar-block {
  background: var(--altn-white);
  border: 1px solid var(--altn-border);
  border-radius: 20px;
  padding: 30px;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.05);
}

.content-block h2,
.sidebar-block h2 {
  margin-top: 0;
}

.content-block p,
.sidebar-block p {
  color: var(--altn-gray);
}

@media (max-width: 850px) {
  .header-inner { flex-direction: column; align-items: flex-start; }
  .main-nav { justify-content: flex-start; }
  .card-grid,
  .two-column-layout { grid-template-columns: 1fr; }
  .hero { padding-top: 46px; }
}