/* Praxis landing page — self-contained, no external fonts/scripts. */

:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Consolas, "Liberation Mono", Menlo,
    monospace;

  --bg: #ffffff;
  --bg-alt: #f4f5f7;
  --fg: #17181c;
  --fg-muted: #52565e;
  --border: #e1e3e8;
  --accent: #4f46e5;
  --accent-fg: #ffffff;
  --accent-soft: #eef0ff;
  --warn-bg: #fff8e6;
  --warn-border: #e8c766;
  --warn-fg: #6b4f00;
  --shadow: 0 1px 3px rgba(20, 20, 30, 0.08), 0 1px 2px rgba(20, 20, 30, 0.06);
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --bg-alt: #16181e;
    --fg: #eceef2;
    --fg-muted: #a3a8b4;
    --border: #2a2d36;
    --accent: #8b85ff;
    --accent-fg: #0f1115;
    --accent-soft: #201f3a;
    --warn-bg: #2a2410;
    --warn-border: #6b5a1a;
    --warn-fg: #e8cf70;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.4), 0 1px 2px rgba(0, 0, 0, 0.3);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3 {
  line-height: 1.15;
  letter-spacing: -0.01em;
}

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

code {
  font-family: var(--font-mono);
  background: var(--bg-alt);
  padding: 0.1em 0.4em;
  border-radius: 4px;
  font-size: 0.9em;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: var(--accent-fg);
  padding: 8px 16px;
  z-index: 100;
}
.skip-link:focus {
  left: 8px;
  top: 8px;
}

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(150%) blur(8px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  padding-top: 14px;
  padding-bottom: 14px;
}

.brand {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--fg);
  text-decoration: none;
  margin-right: auto;
}

.main-nav {
  display: none;
  gap: 20px;
}

.main-nav a {
  color: var(--fg-muted);
  text-decoration: none;
  font-size: 0.92rem;
  white-space: nowrap;
}

.main-nav a:hover {
  color: var(--fg);
}

@media (min-width: 800px) {
  .main-nav {
    display: flex;
  }
}

/* ---------- buttons ---------- */

.btn {
  display: inline-block;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 600;
  text-align: center;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-fg);
}
.btn-primary:hover {
  filter: brightness(1.08);
}

.btn-ghost {
  background: transparent;
  color: var(--fg);
  border-color: var(--border);
}
.btn-ghost:hover {
  background: var(--bg-alt);
}

.btn-small {
  padding: 8px 16px;
  font-size: 0.88rem;
}

.btn-large {
  padding: 14px 26px;
  font-size: 1.02rem;
}

.header-buy {
  flex-shrink: 0;
}

/* ---------- hero ---------- */

.hero {
  padding: 72px 0 56px;
  text-align: center;
  background:
    radial-gradient(ellipse 60% 50% at 50% -10%, var(--accent-soft), transparent);
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent);
  margin: 0 0 12px;
}

.hero h1 {
  font-size: clamp(2.6rem, 6vw, 4rem);
  margin: 0;
  font-weight: 800;
}

.hero-tagline {
  font-size: clamp(1.1rem, 2.4vw, 1.4rem);
  font-weight: 600;
  margin: 10px 0 0;
}

.hero-sub {
  max-width: 620px;
  margin: 20px auto 0;
  color: var(--fg-muted);
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  margin: 32px 0 18px;
}

.hero-prereq-teaser {
  font-size: 0.92rem;
  color: var(--fg-muted);
  margin: 0;
}

/* ---------- sections ---------- */

.section {
  padding: 72px 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section h2 {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  margin: 0 0 8px;
  text-align: center;
}

.section-lede {
  text-align: center;
  color: var(--fg-muted);
  max-width: 640px;
  margin: 0 auto 40px;
  font-size: 1.05rem;
}

.section-note {
  text-align: center;
  color: var(--fg-muted);
  max-width: 640px;
  margin: 32px auto 0;
  font-size: 0.95rem;
}

/* ---------- what it is ---------- */

.idea-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}

@media (min-width: 720px) {
  .idea-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.idea-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  background: var(--bg);
}

.idea-card h3 {
  margin: 0 0 10px;
  font-size: 1.1rem;
}

.idea-card p {
  margin: 0;
  color: var(--fg-muted);
  font-size: 0.95rem;
}

/* ---------- features ---------- */

.feature-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: 1fr;
}

@media (min-width: 620px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 980px) {
  .feature-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.feature-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  background: var(--bg);
  box-shadow: var(--shadow);
}

.feature-card h3 {
  margin: 0 0 8px;
  font-size: 1.02rem;
}

.feature-card p {
  margin: 0;
  color: var(--fg-muted);
  font-size: 0.9rem;
}

/* ---------- demo / screenshots ---------- */

.shot-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}

@media (min-width: 720px) {
  .shot-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.shot {
  margin: 0;
}

.shot-img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-alt);
}

.shot figcaption {
  text-align: center;
  color: var(--fg-muted);
  font-size: 0.85rem;
  margin-top: 8px;
}

/* ---------- prerequisites (prominent) ---------- */

.prereq-section {
  padding-top: 56px;
  padding-bottom: 56px;
}

.prereq-callout {
  border: 2px solid var(--warn-border);
  background: var(--warn-bg);
  color: var(--warn-fg);
  border-radius: var(--radius);
  padding: clamp(24px, 5vw, 44px);
  max-width: 780px;
  margin: 0 auto;
}

.prereq-flag {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 800;
  font-size: 0.8rem;
  background: var(--warn-border);
  color: var(--warn-bg);
  padding: 4px 10px;
  border-radius: 999px;
  margin: 0 0 16px;
}

.prereq-callout h2 {
  text-align: left;
  color: var(--warn-fg);
  margin: 0 0 14px;
}

.prereq-intro {
  margin: 0 0 18px;
  font-size: 1.02rem;
}

.prereq-list {
  margin: 0 0 20px;
  padding-left: 22px;
  display: grid;
  gap: 14px;
}

.prereq-list li {
  font-size: 0.98rem;
}

.prereq-warning {
  font-weight: 700;
  border-top: 1px solid var(--warn-border);
  padding-top: 16px;
  margin: 0 0 22px;
}

.prereq-callout .btn-primary {
  background: var(--warn-fg);
  color: var(--warn-bg);
}

/* ---------- pricing ---------- */

.price-card {
  max-width: 460px;
  margin: 0 auto;
  text-align: center;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  box-shadow: var(--shadow);
}

.price-amount {
  font-size: 3rem;
  font-weight: 800;
  margin: 0;
}

.price-note {
  color: var(--fg-muted);
  margin: 2px 0 14px;
}

.price-earlybird {
  background: var(--accent-soft);
  color: var(--accent);
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.9rem;
  margin: 0 0 22px;
}

.price-details {
  text-align: left;
  margin: 0 0 26px;
  padding-left: 20px;
  color: var(--fg-muted);
  font-size: 0.92rem;
  display: grid;
  gap: 8px;
}

/* ---------- FAQ ---------- */

.faq-list {
  max-width: 720px;
  margin: 0 auto;
  display: grid;
  gap: 22px;
}

.faq-item dt {
  font-weight: 700;
  margin-bottom: 6px;
}

.faq-item dd {
  margin: 0;
  color: var(--fg-muted);
}

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0 48px;
  background: var(--bg-alt);
}

.footer-inner {
  text-align: center;
  color: var(--fg-muted);
  font-size: 0.88rem;
  display: grid;
  gap: 8px;
}

.ytunnus-placeholder {
  display: inline-block;
  font-family: var(--font-mono);
  background: var(--warn-bg);
  color: var(--warn-fg);
  border: 1px solid var(--warn-border);
  padding: 1px 8px;
  border-radius: 4px;
  margin-left: 4px;
}

.footer-inner a {
  color: var(--fg-muted);
}