/* ===========================================================
   Aiplies — landing site
   Plain CSS. One accent: deep blue #1E3A8A.
   =========================================================== */

:root {
  --accent: #1E3A8A;
  --accent-600: #1b3578;
  --accent-700: #15295c;
  --accent-tint: #eef2fb;
  --text: #111418;
  --muted: #5b616e;
  --line: #e7e9ee;
  --line-soft: #f0f1f4;
  --bg: #ffffff;
  --chat-guest: #f1f3f6;
  --chat-guest-text: #20242c;
  --radius: 12px;
  --radius-lg: 16px;
  --maxw: 720px;
}

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

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

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-feature-settings: 'cv11', 'ss01';
  color: var(--text);
  background: var(--bg);
  line-height: 1.62;
  font-size: 17px;
  letter-spacing: -0.011em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--accent);
  color: #fff;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

a:hover {
  color: var(--accent-700);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

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

/* ---------- Sticky header ---------- */
.site-head {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line-soft);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 62px;
}

.nav .wordmark {
  font-weight: 800;
  font-size: 19px;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: -0.03em;
}

.nav-cta {
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.nav-cta:hover {
  background: var(--accent-tint);
  border-color: #d7ddf0;
  color: var(--accent);
}

/* ---------- Shared bits ---------- */
.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 12px;
}

main {
  display: block;
}

/* ---------- Hero ---------- */
.hero {
  padding: 64px 0 44px;
}

.hero h1 {
  font-size: clamp(2.35rem, 6.2vw, 3.5rem);
  line-height: 1.05;
  font-weight: 800;
  letter-spacing: -0.035em;
  margin: 0 0 20px;
  text-wrap: balance;
}

.hero h1 .kw {
  color: var(--accent);
}

.hero .sub {
  font-size: clamp(1.12rem, 2.4vw, 1.3rem);
  line-height: 1.5;
  color: var(--muted);
  margin: 0 0 28px;
  max-width: 600px;
}

/* ---------- Sections ---------- */
section {
  padding: 44px 0;
  border-top: 1px solid var(--line);
}

section h2 {
  font-size: clamp(1.55rem, 3.2vw, 1.95rem);
  line-height: 1.18;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin: 0 0 18px;
  text-wrap: balance;
}

section p {
  margin: 0 0 16px;
  max-width: 620px;
}

section p:last-child {
  margin-bottom: 0;
}

.lead {
  font-size: 1.06rem;
}

/* ---------- Button ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  font-size: 16px;
  letter-spacing: -0.01em;
  padding: 14px 28px;
  border-radius: var(--radius);
  box-shadow: 0 1px 2px rgba(17, 20, 24, 0.08),
              0 12px 28px -14px rgba(30, 58, 138, 0.55);
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn:hover {
  background: var(--accent-600);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 2px 4px rgba(17, 20, 24, 0.1),
              0 18px 34px -14px rgba(30, 58, 138, 0.6);
}

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

.cta-row {
  margin-top: 28px;
}

/* ---------- Chat block ---------- */
.chat {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: linear-gradient(180deg, #fbfbfd 0%, #f7f8fb 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: 0 1px 2px rgba(17, 20, 24, 0.04);
  max-width: 560px;
}

.bubble {
  max-width: 82%;
  padding: 11px 15px 12px;
  border-radius: 16px;
  font-size: 0.97rem;
  line-height: 1.45;
}

.bubble .who {
  display: block;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 3px;
  opacity: 0.72;
}

.bubble.guest {
  align-self: flex-start;
  background: var(--chat-guest);
  color: var(--chat-guest-text);
  border-bottom-left-radius: 5px;
}

.bubble.sofia {
  align-self: flex-end;
  background: var(--accent);
  color: #fff;
  border-bottom-right-radius: 5px;
}

/* ---------- Contact page ---------- */
.contact-email {
  display: inline-block;
  font-size: clamp(1.7rem, 5vw, 2.3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--accent);
  text-decoration: none;
  margin: 10px 0 16px;
  word-break: break-word;
}

.contact-email:hover {
  color: var(--accent-700);
  text-decoration: underline;
  text-decoration-thickness: 2px;
}

.note {
  color: var(--muted);
  margin: 0;
}

/* ---------- Privacy / prose ---------- */
.page-head {
  padding: 56px 0 8px;
}

.page-head h1 {
  font-size: clamp(2rem, 5vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0 0 8px;
}

.page-head .updated {
  color: var(--muted);
  font-size: 0.95rem;
  margin: 0;
}

.prose {
  padding: 24px 0 8px;
}

.prose h3 {
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  margin: 28px 0 8px;
}

.prose h3:first-child {
  margin-top: 0;
}

.prose p {
  margin: 0 0 14px;
  max-width: 640px;
  color: #23272e;
}

/* ---------- Footer ---------- */
footer {
  margin-top: 8px;
  border-top: 1px solid var(--line);
  background: #fbfbfd;
  padding: 40px 0 48px;
  font-size: 15px;
  color: var(--muted);
}

footer .fmark {
  font-weight: 800;
  font-size: 19px;
  color: var(--accent);
  letter-spacing: -0.03em;
}

footer .tagline {
  margin: 8px 0 18px;
  max-width: 460px;
  line-height: 1.55;
}

footer .links {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0 0 16px;
}

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

footer .links a:hover {
  color: var(--accent);
}

footer .sep {
  color: #c9ccd4;
}

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

/* ---------- Mobile ---------- */
@media (max-width: 640px) {
  body {
    font-size: 16px;
  }
  .wrap {
    padding: 0 18px;
  }
  .hero {
    padding: 44px 0 32px;
  }
  section {
    padding: 36px 0;
  }
  .chat {
    padding: 18px;
  }
  .bubble {
    max-width: 88%;
  }
  .page-head {
    padding: 40px 0 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto;
    transition: none !important;
  }
}