/* ParaPrep, landing page (index.html) styles, Brief 29.
   Built on the shared brand tokens + fonts in styles.css. All landing-only
   classes are prefixed `pp-` so nothing clashes with the app pages, the prototype,
   or landing.css's `lp-` classes. Responsive 360 to 1280px. */

html { scroll-behavior: smooth; }
/* override styles.css `main { max-width:1000px }` so sections can go full-bleed */
.pp-main { max-width: none; margin: 0; padding: 0; }
:target { scroll-margin-top: 84px; }

/* ---------- Skip link ---------- */
.pp-skip {
  position: absolute; left: -999px; top: .5rem; z-index: 100;
  background: var(--signal-600); color: #fff; padding: .6rem 1rem;
  border-radius: 8px; text-decoration: none; font-weight: 700;
}
.pp-skip:focus { left: .5rem; }

/* ---------- Header ---------- */
.pp-header {
  position: sticky; top: 0; z-index: 30;
  background: rgba(255,255,255,.92); backdrop-filter: saturate(1.1) blur(8px);
  border-bottom: 1px solid var(--line);
}
.pp-header-inner {
  max-width: 1180px; margin: 0 auto;
  display: flex; align-items: center; gap: 1rem;
  padding: .75rem 1.5rem;
}
.pp-wordmark {
  display: inline-flex; align-items: center; gap: .42rem; text-decoration: none;
  font-family: var(--font-display); font-weight: 700; font-size: 1.4rem; letter-spacing: -.03em;
}
.pp-wordmark .para { color: var(--ink); }
.pp-wordmark .prep { color: var(--signal); }
.pp-wordmark .spike { width: 26px; height: 26px; flex: none; }
.pp-wordmark .spike path { stroke: var(--signal); }

.pp-nav { display: flex; align-items: center; gap: .3rem; margin-left: auto; }
.pp-nav a {
  text-decoration: none; color: var(--muted); font-weight: 600;
  font-size: .92rem; padding: .5rem .8rem; border-radius: 8px;
}
.pp-nav a:hover { background: var(--teal-soft); color: var(--signal-600); }
.pp-nav .pp-cta { color: #fff; background: var(--signal); margin-left: .35rem; padding: .55rem 1.1rem; }
.pp-nav .pp-cta:hover { background: var(--signal-600); color: #fff; }
.pp-burger {
  display: none; margin-left: auto; width: 44px; height: 44px; padding: 0;
  background: transparent; border: 1px solid var(--line); border-radius: 9px; cursor: pointer;
  flex-direction: column; align-items: center; justify-content: center; gap: 5px;
}
.pp-burger span { display: block; width: 20px; height: 2px; background: var(--ink); border-radius: 2px; transition: transform .2s, opacity .2s; }
.pp-burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.pp-burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.pp-burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Buttons ---------- */
.pp-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  border: 0; cursor: pointer; text-decoration: none; font-family: var(--font-body);
  font-weight: 600; font-size: 1rem; padding: .8rem 1.5rem; border-radius: 11px;
  transition: transform .12s ease, box-shadow .12s ease, background .12s ease;
}
.pp-btn:active { transform: translateY(1px); }
.pp-btn-primary { background: var(--signal); color: #fff; box-shadow: 0 8px 20px rgba(44,92,255,.34); }
.pp-btn-primary:hover { background: var(--signal-600); }
.pp-btn-light { background: #fff; color: var(--signal-600); }
.pp-btn-light:hover { background: #eef3ff; }
.pp-btn-ghost { background: rgba(255,255,255,.08); color: #fff; border: 1.5px solid rgba(255,255,255,.55); }
.pp-btn-ghost:hover { background: rgba(255,255,255,.18); }

/* ---------- Hero ---------- */
.pp-hero {
  position: relative; overflow: hidden;
  background: var(--grad-dark); color: #fff;
  padding: clamp(3rem, 7vw, 5.5rem) 1.5rem clamp(3.5rem, 8vw, 6rem);
}
.pp-hero::after { /* faint ECG line across the foot of the hero */
  content: ""; position: absolute; left: 0; right: 0; bottom: 26px; height: 110px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='1200' height='120' viewBox='0 0 1200 120'%3E%3Cpath d='M0 60 H320 l18 0 l10 -40 l14 80 l12 -64 l10 28 l8 0 H700 l16 0 l10 -34 l14 70 l12 -56 l10 20 H1200' fill='none' stroke='%2319E3A6' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/cover no-repeat;
  opacity: .42; pointer-events: none;
}
.pp-hero-inner { position: relative; z-index: 1; max-width: 920px; margin: 0 auto; text-align: center; }
.pp-eyebrow {
  font-family: var(--font-mono); font-size: .72rem; letter-spacing: .18em;
  text-transform: uppercase; color: var(--mint); margin: 0 0 1.1rem;
}
.pp-hero h1 {
  font-size: clamp(2.4rem, 7vw, 4.5rem); font-weight: 700; line-height: 1.04;
  letter-spacing: -.03em; margin: 0;
}
.pp-hero h1 .accent { color: #9FE9FF; }
.pp-hero-tag {
  font-size: clamp(1.05rem, 2.2vw, 1.35rem); color: rgba(255,255,255,.86);
  max-width: 44ch; margin: 1.2rem auto 0;
}
.pp-cta-row { display: flex; gap: .8rem; flex-wrap: wrap; justify-content: center; margin-top: 2rem; }
.pp-hero-note {
  margin: 1.3rem 0 0; font-family: var(--font-mono); font-size: .74rem;
  letter-spacing: .04em; color: rgba(255,255,255,.62);
}
.pp-hero-note .dot { color: var(--mint); }

/* Stat strip */
.pp-stats {
  display: flex; flex-wrap: wrap; gap: 1.6rem 2.6rem; justify-content: center;
  margin-top: 2.6rem; padding-top: 2rem; border-top: 1px solid rgba(255,255,255,.14);
}
.pp-stat { text-align: center; }
.pp-stat .num { font-family: var(--font-display); font-weight: 700; font-size: clamp(1.6rem, 3vw, 2.2rem); line-height: 1; }
.pp-stat .num.mint { color: var(--mint); }
.pp-stat .lbl { display: block; margin-top: .35rem; font-size: .76rem; color: rgba(255,255,255,.66); letter-spacing: .02em; }

/* ---------- Generic section ---------- */
.pp-section { padding: clamp(3rem, 6vw, 4.5rem) 1.5rem; }
.pp-section--alt { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.pp-container { max-width: 1100px; margin: 0 auto; }
.pp-sec-eyebrow { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .18em; text-transform: uppercase; color: var(--signal); margin: 0 0 .7rem; text-align: center; }
.pp-sec-title { font-size: clamp(1.6rem, 3.4vw, 2.4rem); font-weight: 700; letter-spacing: -.02em; text-align: center; margin: 0; }
.pp-sec-sub { color: var(--muted); max-width: 56ch; margin: .8rem auto 0; text-align: center; font-size: 1.02rem; }

/* ECG divider */
.pp-ecg { display: block; width: min(560px, 80%); height: 26px; margin: 1.6rem auto 0; opacity: .9; }
.pp-ecg path { stroke: var(--mint); }

/* ---------- What's inside (feature grid) ---------- */
.pp-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-top: 2.4rem; }
.pp-feature {
  display: flex; flex-direction: column; gap: .5rem;
  background: var(--surface); border: 1px solid var(--line); border-radius: 16px;
  padding: 1.3rem; box-shadow: var(--shadow); text-decoration: none; color: inherit;
  transition: transform .12s ease, box-shadow .12s ease, border-color .12s ease;
}
.pp-feature:hover { transform: translateY(-3px); box-shadow: 0 16px 36px rgba(20,40,120,.14); border-color: #c9d6ff; }
.pp-feature .ico { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; font-size: 1.4rem; background: var(--teal-soft); }
.pp-feature.alt .ico { background: var(--mint-soft); }
.pp-feature h3 { font-size: 1.05rem; margin: .3rem 0 0; }
.pp-feature p { margin: 0; color: var(--muted); font-size: .9rem; }
.pp-feature .go { margin-top: auto; padding-top: .5rem; font-family: var(--font-mono); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; color: var(--signal-600); }

/* ---------- How it works ---------- */
.pp-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; margin-top: 2.4rem; }
.pp-step { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 1.5rem; box-shadow: var(--shadow); }
.pp-step .n { font-family: var(--font-mono); font-weight: 700; font-size: .8rem; color: #fff; background: var(--signal); width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; }
.pp-step h3 { margin: .9rem 0 .35rem; font-size: 1.1rem; }
.pp-step p { margin: 0; color: var(--muted); font-size: .92rem; }

/* ---------- Who it's for ---------- */
.pp-who { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; margin-top: 2.4rem; }
.pp-who-card { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 1.6rem; box-shadow: var(--shadow); }
.pp-badge { display: inline-block; font-family: var(--font-mono); font-size: .7rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; padding: .25rem .65rem; border-radius: 999px; margin-bottom: .85rem; }
.pp-badge.emt { background: var(--teal-soft); color: var(--signal-600); }
.pp-badge.para { background: var(--mint-soft); color: var(--mint-ink); }
.pp-who-card h3 { margin: 0 0 .45rem; font-size: 1.2rem; }
.pp-who-card p { margin: 0; color: var(--muted); }
.pp-ati { text-align: center; color: var(--muted); font-size: .92rem; margin: 1.8rem auto 0; max-width: 60ch; }
.pp-ati a { color: var(--signal-600); font-weight: 600; }

/* ---------- Honesty / draft note ---------- */
.pp-note {
  max-width: 760px; margin: 0 auto; display: flex; gap: .9rem; align-items: flex-start;
  background: var(--amber-bg); border: 1px solid var(--amber-border); border-left: 4px solid var(--amber);
  border-radius: 14px; padding: 1.1rem 1.3rem;
}
.pp-note .mark { font-size: 1.2rem; line-height: 1.3; }
.pp-note h3 { margin: 0 0 .3rem; font-size: 1rem; color: var(--amber); }
.pp-note p { margin: 0; color: var(--ink); font-size: .9rem; }

/* ---------- Footer ---------- */
.pp-footer { background: var(--navy); color: #c4cee0; }
.pp-footer-inner { max-width: 1100px; margin: 0 auto; padding: 2.6rem 1.5rem 1.4rem; display: flex; flex-wrap: wrap; gap: 1.5rem; justify-content: space-between; align-items: flex-start; }
.pp-footer .pp-wordmark .para { color: #fff; }
.pp-footer .pp-wordmark .prep { color: #9FE9FF; }
.pp-footer .pp-wordmark .spike path { stroke: var(--mint); }
.pp-foot-links { display: flex; flex-wrap: wrap; gap: .6rem 1.3rem; align-items: center; }
.pp-foot-links a { color: #c4cee0; text-decoration: none; font-size: .9rem; font-weight: 600; padding: .4rem .2rem; }
.pp-foot-links a:hover { color: #fff; text-decoration: underline; }
.pp-legal { max-width: 1100px; margin: 0 auto; padding: 1.2rem 1.5rem 2.4rem; border-top: 1px solid rgba(255,255,255,.12); }
.pp-legal p { margin: 0 0 .5rem; font-size: .82rem; color: #9aa6bd; max-width: 95ch; }
.pp-legal strong { color: #e2e8f5; }
.pp-legal .na { margin: 0; color: #8390a8; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .pp-grid { grid-template-columns: repeat(2, 1fr); }
  .pp-steps { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .pp-burger { display: flex; }
  .pp-nav {
    position: absolute; top: 100%; left: 0; right: 0; margin-left: 0;
    flex-direction: column; align-items: stretch; gap: .25rem;
    background: var(--surface); border-bottom: 1px solid var(--line);
    padding: .6rem 1.5rem 1rem; box-shadow: var(--shadow); display: none;
  }
  .pp-nav.is-open { display: flex; }
  .pp-nav .pp-cta { margin-left: 0; margin-top: .3rem; text-align: center; }
  .pp-header-inner { position: relative; }
}
@media (max-width: 520px) {
  .pp-grid, .pp-who { grid-template-columns: 1fr; }
  .pp-cta-row .pp-btn { flex: 1; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .pp-feature, .pp-btn, .pp-burger span { transition: none; }
}