/* ImpNotes — Material 3 flavoured site styles.
   Brand tokens mirror Mobile-App/src/theme/colors.js so the site and the app
   read as one product. */

:root {
  --blue-light: #0A7ABE;
  --blue-deep: #003E69;
  --primary: #00639B;
  --on-primary: #FFFFFF;
  --primary-container: #CEE5FF;
  --on-primary-container: #001D33;
  --accent: #FFB320;

  --bg: #FCFCFF;
  --surface: #FFFFFF;
  --surface-low: #F6F7FA;
  --surface-high: #EAECEF;
  --on-surface: #1A1C1E;
  --on-surface-variant: #42474E;
  --outline: #72777F;
  --outline-variant: #C2C7CF;
  --error: #BA1A1A;
  --error-container: #FFDAD6;
  --on-error-container: #410002;

  --radius-s: 12px;
  --radius: 20px;
  --radius-l: 28px;
  --maxw: 1080px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
          Arial, "Noto Sans", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111315;
    --surface: #191C1E;
    --surface-low: #1D2022;
    --surface-high: #282A2D;
    --on-surface: #E2E2E6;
    --on-surface-variant: #C2C7CF;
    --outline: #8C9199;
    --outline-variant: #42474E;
    --primary: #96CCFF;
    --on-primary: #003353;
    --primary-container: #004B76;
    --on-primary-container: #CEE5FF;
    --error: #FFB4AB;
    --error-container: #93000A;
    --on-error-container: #FFDAD6;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.65;
  color: var(--on-surface);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

/* ------------------------------------------------------------- header */
header {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--outline-variant);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 16px; }
.logo-group { display: flex; align-items: center; gap: 12px; text-decoration: none; color: inherit; }
/* The artwork already carries its own 22.37% squircle, so no CSS rounding
   on top of it - a second, different curve just shaves the corners twice. */
.logo-group img { width: 38px; height: 38px; display: block; }
.logo-title { font-weight: 800; font-size: 19px; letter-spacing: -0.3px; }
.nav-links { display: flex; gap: 8px; flex-wrap: wrap; }
.nav-links a {
  color: var(--on-surface-variant); text-decoration: none; font-size: 15px;
  font-weight: 600; padding: 8px 14px; border-radius: 999px;
}
.nav-links a:hover { background: var(--surface-high); color: var(--on-surface); }

/* --------------------------------------------------------------- hero */
.hero {
  background: linear-gradient(135deg, var(--blue-light) 0%, var(--blue-deep) 100%);
  color: #fff; padding: 88px 0 96px; position: relative; overflow: hidden;
}
.hero::after {
  content: ""; position: absolute; width: 620px; height: 620px; right: -160px; top: -220px;
  background: radial-gradient(circle, rgba(255,255,255,.18), transparent 62%);
}
.hero .container { position: relative; z-index: 1; }
.badge {
  display: inline-block; padding: 7px 16px; border-radius: 999px;
  background: rgba(255,255,255,.15); border: 1px solid rgba(255,255,255,.28);
  font-size: 13px; font-weight: 700; letter-spacing: .3px; margin-bottom: 22px;
}
.hero h1 {
  font-size: clamp(36px, 6vw, 60px); line-height: 1.08; margin: 0 0 18px;
  font-weight: 800; letter-spacing: -1.2px; max-width: 15ch;
}
.hero p { font-size: clamp(17px, 2.2vw, 21px); max-width: 58ch; opacity: .92; margin: 0 0 32px; }
.rule { width: 68px; height: 6px; border-radius: 3px; background: var(--accent); margin: 0 0 22px; }

.cta-group { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primary, .btn-secondary {
  display: inline-flex; align-items: center; gap: 10px; text-decoration: none;
  padding: 14px 28px; border-radius: 999px; font-weight: 700; font-size: 16px;
  transition: transform .15s ease, box-shadow .15s ease;
}
.btn-primary { background: #fff; color: var(--blue-deep); box-shadow: 0 8px 24px rgba(0,0,0,.22); }
.btn-secondary { background: rgba(255,255,255,.14); color: #fff; border: 1px solid rgba(255,255,255,.4); }
.btn-primary:hover, .btn-secondary:hover { transform: translateY(-2px); }

.shots { display: flex; gap: 20px; margin-top: 52px; overflow-x: auto; padding-bottom: 8px; }
.shots img {
  width: 236px; flex: 0 0 auto; border-radius: 22px;
  border: 1px solid rgba(255,255,255,.28); box-shadow: 0 20px 44px rgba(0,0,0,.34);
}

/* ------------------------------------------------------------ content */
section { padding: 76px 0; }
section h2 {
  font-size: clamp(27px, 3.6vw, 38px); font-weight: 800; letter-spacing: -.6px;
  margin: 0 0 12px;
}
.lede { color: var(--on-surface-variant); max-width: 62ch; margin: 0 0 40px; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(268px, 1fr)); gap: 20px; }
.card {
  background: var(--surface-low); border: 1px solid var(--outline-variant);
  border-radius: var(--radius-l); padding: 28px;
}
.card h3 { margin: 0 0 8px; font-size: 19px; font-weight: 700; }
.card p { margin: 0; color: var(--on-surface-variant); font-size: 15.5px; }
.card .ico {
  width: 46px; height: 46px; border-radius: 14px; display: grid; place-items: center;
  background: var(--primary-container); color: var(--on-primary-container);
  margin-bottom: 16px;
}
.card .ico svg { width: 24px; height: 24px; }

.alt { background: var(--surface-low); }

/* ---------------------------------------------------------- documents */
.doc { max-width: 800px; }
.doc h1 { font-size: clamp(30px, 5vw, 42px); letter-spacing: -.8px; margin: 0 0 8px; }
.doc .updated { color: var(--outline); font-size: 15px; margin: 0 0 36px; }
.doc h2 { font-size: 22px; margin: 40px 0 10px; }
.doc h3 { font-size: 18px; margin: 26px 0 8px; }
.doc p, .doc li { color: var(--on-surface-variant); }
.doc ul, .doc ol { padding-left: 22px; }
.doc li { margin: 7px 0; }
.doc a { color: var(--primary); }

table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 15.5px; }
th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--outline-variant); vertical-align: top; }
th { font-weight: 700; color: var(--on-surface); background: var(--surface-low); }
td { color: var(--on-surface-variant); }
.table-wrap { overflow-x: auto; }

.callout {
  border-radius: var(--radius); padding: 20px 24px; margin: 26px 0;
  background: var(--primary-container); color: var(--on-primary-container);
}
.callout.warn { background: var(--error-container); color: var(--on-error-container); }
.callout p:last-child { margin-bottom: 0; }
.callout p:first-child { margin-top: 0; }

.steps { counter-reset: step; list-style: none; padding: 0; margin: 26px 0; }
.steps li {
  counter-increment: step; position: relative; padding: 0 0 26px 56px; margin: 0;
  border-left: 2px solid var(--outline-variant); margin-left: 17px;
}
.steps li:last-child { border-left-color: transparent; padding-bottom: 0; }
.steps li::before {
  content: counter(step); position: absolute; left: -18px; top: -4px;
  width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center;
  background: var(--primary); color: var(--on-primary); font-weight: 800; font-size: 15px;
}
.steps strong { color: var(--on-surface); display: block; margin-bottom: 3px; }

/* ------------------------------------------------------------- footer */
footer {
  border-top: 1px solid var(--outline-variant); background: var(--surface-low);
  padding: 44px 0; margin-top: 20px;
}
.foot { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; align-items: center; }
.foot a { color: var(--on-surface-variant); text-decoration: none; font-size: 15px; margin-right: 18px; }
.foot a:hover { color: var(--primary); }
.foot small { color: var(--outline); }

@media (max-width: 640px) {
  body { font-size: 16px; }
  section { padding: 56px 0; }
  .hero { padding: 60px 0 68px; }
  .nav { height: 60px; }
  .nav-links a { padding: 7px 10px; font-size: 14px; }
}