/* Quesly landing. Shares the panel's design tokens (see src/styles.css);
   theme follows the OS via prefers-color-scheme, no toggle here. */

:root {
  --surface-1: #fcfcfb;
  --page: #f9f9f7;
  --text-primary: #0b0b0b;
  --text-secondary: #52514e;
  --text-muted: #898781;
  --border: rgba(11, 11, 11, 0.1);
  --accent: #2a78d6;
  --accent-ink: #ffffff;
  --accent-soft: #cde2fb;
  --good: #1baf7a;
  --shadow: 0 1px 3px rgba(11, 11, 11, 0.06), 0 4px 16px rgba(11, 11, 11, 0.04);
}

@media (prefers-color-scheme: dark) {
  :root {
    --surface-1: #1a1a19;
    --page: #0d0d0d;
    --text-primary: #ffffff;
    --text-secondary: #c3c2b7;
    --text-muted: #898781;
    --border: rgba(255, 255, 255, 0.1);
    --accent: #3987e5;
    --accent-ink: #ffffff;
    --accent-soft: #184f95;
    --good: #199e70;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--page);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--page) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 18px;
  height: 60px;
}

.logo {
  font-weight: 700;
  font-size: 19px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.top-nav {
  display: flex;
  gap: 18px;
  margin-left: auto;
}

.top-nav a {
  color: var(--text-secondary);
  font-size: 15px;
}

.top-nav a:hover {
  color: var(--text-primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.lang-switch {
  display: flex;
  gap: 2px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2px;
}

.lang-switch a,
.lang-switch span {
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
}

.lang-switch .active {
  background: var(--accent);
  color: var(--accent-ink);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: var(--shadow);
}

.btn-primary:hover {
  filter: brightness(1.08);
}

.btn-ghost {
  border-color: var(--border);
  color: var(--text-primary);
  background: var(--surface-1);
}

.btn-ghost:hover {
  border-color: var(--text-muted);
}

.btn-big {
  padding: 14px 28px;
  font-size: 17px;
  border-radius: 12px;
}

/* Hero */
.hero {
  padding: 72px 0 56px;
  text-align: center;
}

.hero h1 {
  font-size: clamp(32px, 6vw, 52px);
  line-height: 1.15;
  margin: 0 auto 18px;
  max-width: 820px;
  letter-spacing: -0.02em;
}

.hero h1 em {
  font-style: normal;
  color: var(--accent);
}

.hero .sub {
  font-size: clamp(16px, 2.5vw, 19px);
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 30px;
}

.hero-cta {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-note {
  margin-top: 14px;
  font-size: 13.5px;
  color: var(--text-muted);
}

/* Sections */
.section {
  padding: 56px 0;
}

.section.alt {
  background: var(--surface-1);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section h2 {
  font-size: clamp(26px, 4vw, 34px);
  text-align: center;
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}

.section .lead {
  text-align: center;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 40px;
}

/* Feature grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
}

.card {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px;
  box-shadow: var(--shadow);
}

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

.card .icon {
  font-size: 28px;
  line-height: 1;
  margin-bottom: 12px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 17px;
}

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

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  counter-reset: step;
}

.step {
  position: relative;
  padding: 22px 22px 22px 22px;
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 14px;
}

.step .num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
  margin-bottom: 12px;
}

.step h3 {
  margin: 0 0 6px;
  font-size: 16px;
}

.step p {
  margin: 0;
  font-size: 14px;
  color: var(--text-secondary);
}

/* Mode cards */
.modes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 18px;
}

.mode {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 26px;
  box-shadow: var(--shadow);
}

.mode h3 {
  margin: 0 0 10px;
  font-size: 19px;
}

.mode ul {
  margin: 0;
  padding-left: 20px;
  color: var(--text-secondary);
  font-size: 14.5px;
}

.mode li {
  margin: 6px 0;
}

.badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  border-radius: 999px;
  padding: 3px 10px;
  margin-bottom: 12px;
}

/* Audience */
.audience {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 18px;
}

/* FAQ */
.faq {
  max-width: 760px;
  margin: 0 auto;
}

.faq details {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 4px 20px;
  margin-bottom: 10px;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  padding: 12px 0;
  font-size: 15.5px;
  list-style: none;
  position: relative;
  padding-right: 28px;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "+";
  position: absolute;
  right: 2px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 20px;
  font-weight: 400;
}

.faq details[open] summary::after {
  content: "–";
}

.faq details p {
  margin: 0 0 16px;
  color: var(--text-secondary);
  font-size: 14.5px;
}

/* Final CTA */
.cta-final {
  text-align: center;
  padding: 72px 0;
}

.cta-final h2 {
  font-size: clamp(26px, 4vw, 36px);
  margin: 0 0 14px;
}

.cta-final p {
  color: var(--text-secondary);
  margin: 0 0 28px;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
  font-size: 14px;
  color: var(--text-muted);
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  align-items: center;
  justify-content: space-between;
}

.site-footer a {
  color: var(--text-secondary);
}

.site-footer nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

@media (max-width: 720px) {
  .top-nav {
    display: none;
  }

  .header-actions {
    margin-left: auto;
  }

  .hero {
    padding: 48px 0 40px;
  }

  .section {
    padding: 44px 0;
  }
}