/* ============================================================
   Winjit US - FSD Analyzer tool page
   Short page: hero, feature grid, what it finds (tabs), offer.
   Content: SDLC_AI_Tools.xlsx and the FSD Analyzer app's own modules.
   Hero is its own light split shell (fa-), matching Figma Validator /
   Apidapt in css/tools.css; closing band from css/landing.css.
   ============================================================ */

/* SECTION 1 - HERO (light split, same shell as Figma Validator / Apidapt) */
.fa-hero { background: linear-gradient(180deg, var(--green-50) 0%, var(--mint) 100%); padding: clamp(28px, 4vw, 44px) 0 clamp(64px, 8vw, 104px); }
.fa-hero__cols { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 5vw, 72px); align-items: center; }

.fa-crumbs ol {
  list-style: none; display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 clamp(32px, 4.5vw, 56px); padding: 0;
  font-size: 14px; color: var(--grey-500);
}
.fa-crumbs a { color: var(--grey-600); }
.fa-crumbs a:hover { color: var(--primary); }
.fa-crumbs li + li::before { content: "→"; margin-right: 8px; color: var(--grey-400); }

.fa-hero__title { font-size: clamp(38px, 4.8vw, 64px); font-weight: 500; line-height: 1.07; letter-spacing: -0.02em; margin: 0; }
.fa-hero__sub { margin: 20px 0 0; max-width: 54ch; font-size: clamp(17px, 1.4vw, 20px); line-height: 1.55; color: var(--grey-600); }
.fa-hero__ctas { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }

/* Illustrative sample analysis, same shell as Figma Validator's .fv-report */
.fa-report {
  position: relative; background: #fff; border: 1px solid var(--grey-200); border-radius: var(--radius-card);
  padding: 28px 26px 24px; box-shadow: 0 24px 60px rgba(9, 9, 11, .08);
}
.fa-report__head { display: flex; align-items: baseline; gap: 10px; margin-bottom: 16px; }
.fa-report__head b { font-size: 17px; color: var(--grey-900); }
.fa-report__head span { font-size: 13px; color: var(--grey-500); }
.fa-report__counts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-bottom: 14px; }
.fa-report__counts div { background: var(--grey-50); border: 1px solid var(--grey-100); border-radius: var(--radius-control); padding: 10px 12px; }
.fa-report__counts b { display: block; font-family: var(--ff-display); font-size: 24px; line-height: 1.1; color: var(--grey-900); }
.fa-report__counts span { font-size: 11.5px; line-height: 1.3; color: var(--grey-600); }
.fa-report__list { list-style: none; margin: 0; padding: 0; }
.fa-report__list li { display: grid; grid-template-columns: 92px 1fr; gap: 12px; align-items: center; padding: 11px 0; border-top: 1px dashed var(--grey-200); }
.fa-report__list b { display: block; font-size: 14px; color: var(--grey-900); }
.fa-report__list small { font-size: 13px; color: var(--grey-600); }
.fa-report__note { position: absolute; top: 20px; right: 22px; font-size: 11px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--grey-400); }

@media (max-width: 960px) {
  .fa-hero__cols { grid-template-columns: 1fr; }
  .fa-report { max-width: 560px; }
}
@media (max-width: 560px) {
  .fa-hero__ctas .btn { width: 100%; justify-content: center; }
  .fa-report__counts { grid-template-columns: 1fr 1fr; }
}

/* ------------------------------------------------------------
   SECTION 3 - WHAT IT FINDS  (tabs, ref: Fantom "Powerful features")
   ------------------------------------------------------------ */
.fa .section-head.fa-head-split {
  display: grid; grid-template-columns: 1fr 1fr; gap: 20px clamp(28px, 5vw, 72px); align-items: end; max-width: none;
}
.fa-head-split h2 { margin: 0; }
.fa-head-split .lp-deck { margin: 0; }
@media (max-width: 860px) { .fa .section-head.fa-head-split { grid-template-columns: 1fr; } }

.fa-tag {
  display: inline-flex; align-items: center; justify-content: center; justify-self: start; white-space: nowrap;
  border-radius: var(--radius-pill); padding: 3px 10px; font-size: 11.5px; font-weight: 700; letter-spacing: .02em;
}
.fa-tag--conflict { background: var(--grey-100); color: var(--grey-800); }
.fa-tag--gap      { background: var(--grey-100); color: var(--grey-800); }
.fa-tag--vague    { background: var(--grey-100); color: var(--grey-800); }
.fa-tag--edge     { background: var(--grey-100); color: var(--grey-800); }

.fa-tabs { display: grid; grid-template-columns: .82fr 1.18fr; gap: clamp(18px, 3vw, 40px); align-items: start; }
.fa-tabs__list { display: grid; gap: 10px; }
.fa-tab {
  display: flex; align-items: center; gap: 16px; width: 100%; text-align: left; cursor: pointer;
  font-family: var(--ff-base); background: #fff; border: 1px solid var(--grey-200); border-radius: 18px;
  padding: 16px 18px; transition: border-color 200ms ease, background-color 200ms ease, box-shadow 200ms ease;
}
.fa-tab:hover { border-color: var(--blue-wash-border); }
.fa-tab.is-active { background: var(--soft-blue); border-color: rgba(3, 78, 162, .35); box-shadow: 0 8px 24px rgba(3, 78, 162, .08); }
.fa-tab__icon {
  flex: 0 0 auto; width: 42px; height: 42px; border-radius: var(--radius-control); display: grid; place-items: center;
  background: var(--grey-100); color: var(--grey-600); transition: background-color 200ms ease, color 200ms ease;
}
.fa-tab.is-active .fa-tab__icon { background: var(--primary); color: #fff; }
.fa-tab b { display: block; font-size: 16.5px; font-weight: 700; color: var(--grey-900); }
.fa-tab small { display: block; margin-top: 2px; font-size: 14px; color: var(--grey-600); line-height: 1.4; }

.fa-tabs__panels {
  position: relative; border-radius: var(--radius-block); padding: clamp(18px, 3vw, 36px);
  background: linear-gradient(160deg, #DDEBFC 0%, #F1F7FF 50%, var(--green-50) 100%);
}
.fa-panel.is-active { animation: fa-fade 400ms var(--ease-out) both; }
@keyframes fa-fade { from { opacity: 0; transform: translateY(8px); } }
.fa-card {
  background: #fff; border: 1px solid var(--grey-200); border-radius: 20px; padding: clamp(18px, 2.4vw, 28px);
  box-shadow: 0 18px 44px rgba(3, 78, 162, .10);
}
.fa-card__head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 18px; }
.fa-card__sev { font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--grey-500); }
.fa-quotes { display: grid; gap: 10px; }
.fa-quotes blockquote {
  margin: 0; padding: 12px 16px; border-left: 3px solid var(--grey-300); background: var(--grey-50); border-radius: 0 12px 12px 0;
  font-size: 15.5px; line-height: 1.55; color: var(--grey-800);
}
.fa-quotes cite { display: block; font-style: normal; font-size: 12px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--grey-500); margin-bottom: 4px; }
.fa-quotes mark { background: var(--soft-blue); color: inherit; padding: 0 3px; border-radius: 4px; }
.fa-card__ask {
  margin-top: 14px; padding: 14px 16px; border-radius: var(--radius-control); background: var(--soft-blue);
  font-size: 15.5px; line-height: 1.55; color: var(--grey-800);
}
.fa-card__ask b { display: block; font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--primary); margin-bottom: 4px; }
.fa-card__list { list-style: none; margin: 14px 0 0; padding: 0; }
.fa-card__head + .fa-card__list { margin-top: 0; }
.fa-card__list li {
  position: relative; padding: 10px 0 10px 22px; border-top: 1px solid var(--grey-100);
  font-size: 15.5px; line-height: 1.55; color: var(--grey-700);
}
.fa-card__list li:first-child { border-top: 0; }
.fa-card__list li::before { content: ""; position: absolute; left: 2px; top: 19px; width: 8px; height: 8px; border-radius: 50%; background: var(--primary); }
.fa-card__list b { color: var(--grey-900); }
.fa-card__meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--grey-100); }
.fa-card__meta span { font-size: 13px; color: var(--grey-600); background: var(--grey-100); border-radius: var(--radius-pill); padding: 4px 12px; }

.fa-flow { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.fa-flow span { border: 1px solid var(--grey-200); border-radius: var(--radius-pill); padding: 6px 13px; font-size: 13.5px; color: var(--grey-800); background: #fff; }
.fa-flow svg.i { width: 16px; height: 16px; color: var(--grey-400); }
.fa-flow .is-ok { border-color: var(--card-border-green); background: var(--green-50); color: var(--forest-ink); }
.fa-flow .is-missing { border-style: dashed; border-color: var(--primary); color: var(--primary); background: #fff; }

.fa-sample-note { margin: 14px 4px 0; font-size: 13px; color: var(--grey-500); }

/* Scroll-driven steps (desktop, enabled by js/fsd-analyzer.js adding .is-on).
   The track is one viewport plus a scroll distance per tab; the pin holds
   the section in view while the reader scrolls through that distance. */
.fa-scrolly.is-on { padding: 0; }
.fa-scrolly.is-on .fa-scrolly__track { height: calc(100vh - var(--header-h) + var(--fa-steps, 4) * 55vh); }
.fa-scrolly.is-on .fa-scrolly__pin {
  position: sticky; top: var(--header-h); height: calc(100vh - var(--header-h));
  display: flex; align-items: flex-start;
  /* top-anchored, not centred: panels differ in height and centring would jump */
  padding-top: clamp(24px, calc((100vh - var(--header-h) - 680px) / 2), 120px);
}
.fa-scrolly.is-on .fa-scrolly__pin > .container { width: 100%; }
/* tighter spacing while pinned, so the whole step fits one screen */
.fa-scrolly.is-on .section-head { margin-bottom: clamp(18px, 2.4vh, 28px); }
.fa-scrolly.is-on .section-head .eyebrow { margin-bottom: 10px; }
.fa-scrolly.is-on .fa-tabs__panels { padding: clamp(16px, 2.2vw, 28px); }
.fa-scrolly.is-on .fa-card { padding: clamp(16px, 2vw, 24px); }
.fa-scrolly.is-on .fa-tab { padding: 13px 16px; }
.fa-scrolly.is-on .fa-tab { position: relative; overflow: hidden; }
.fa-scrolly.is-on .fa-tab::after {
  content: ""; position: absolute; left: 0; bottom: 0; height: 3px; width: 100%;
  background: var(--grad-line);
  transform-origin: left; transform: scaleX(0);
}
.fa-scrolly.is-on .fa-tab.is-active::after { transform: scaleX(var(--fa-step, 0)); }

@media (max-height: 750px) {
  .fa-scrolly.is-on .fa-scrolly__pin { padding-top: 16px; }
  .fa-scrolly.is-on .section-head { margin-bottom: 12px; }
  .fa-scrolly.is-on .fa-tabs__panels { padding: 12px; }
  .fa-scrolly.is-on .fa-card { padding: 16px; }
  .fa-scrolly.is-on .fa-tab { padding: 8px 12px; }
  .fa-scrolly.is-on .fa-tab__icon { width: 34px; height: 34px; }
  .fa-scrolly.is-on .fa-tab b { font-size: 15px; }
  .fa-scrolly.is-on .fa-quotes blockquote { padding: 8px 12px; font-size: 14px; }
  .fa-scrolly.is-on .fa-card__ask { padding: 10px 14px; font-size: 14.5px; margin-top: 12px; }
  .fa-scrolly.is-on .fa-card__list li { padding: 6px 0 6px 20px; font-size: 14.5px; }
  .fa-scrolly.is-on .fa-card__list li::before { top: 13px; }
  .fa-scrolly.is-on .fa-card__meta { margin-top: 12px; padding-top: 12px; }
  .fa-scrolly.is-on .fa-sample-note { margin-top: 8px; font-size: 12px; }
}
@media (max-width: 900px) {
  .fa-tabs { grid-template-columns: 1fr; }
  .fa-tabs__list { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .fa-tabs__list { grid-template-columns: 1fr; }
  .fa-tab small { display: none; }
}

/* ------------------------------------------------------------
   SECTION 2 - WHAT IT DOES
   ------------------------------------------------------------ */
.fa .section-head.text-center { max-width: 980px; }
.fa-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(14px, 1.8vw, 20px); }
.fa-feature {
  background: #fff; border: 1px solid var(--strokes); border-radius: var(--radius-card);
  padding: clamp(22px, 2.4vw, 30px);
  transition: opacity 500ms var(--ease-out), transform 200ms var(--ease-out), box-shadow 200ms ease, border-color 200ms ease;
}
.fa-feature.in:hover { transform: translateY(-3px); border-color: rgba(3, 78, 162, .2); box-shadow: var(--card-hover-shadow); }
@keyframes faIconPop {
  0% { transform: scale(0.5) translateY(10px); opacity: 0; }
  60% { transform: scale(1.1) translateY(-2px); opacity: 1; }
  100% { transform: scale(1) translateY(0); opacity: 1; }
}
.fa-feature__icon {
  display: flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: 8px;
  background: var(--surface); color: var(--primary);
  margin-bottom: 20px;
  opacity: 0;
}
.fa-feature.in .fa-feature__icon {
  animation: faIconPop 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}
/* Stagger the icons based on the card's stagger delay */
.fa-feature.reveal-d1.in .fa-feature__icon { animation-delay: 80ms; }
.fa-feature.reveal-d2.in .fa-feature__icon { animation-delay: 160ms; }

.fa-feature__icon svg.i { width: 22px; height: 22px; }
.fa-feature h3 { font-size: 19px; font-weight: 700; margin-bottom: 8px; }
.fa-feature p { margin: 0; font-size: 15.5px; line-height: 1.6; color: var(--grey-600); }
@media (max-width: 900px) { .fa-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .fa-grid { grid-template-columns: 1fr; } }

/* ------------------------------------------------------------
   SECTION 4 - FIRST ENGAGEMENT
   ------------------------------------------------------------ */
.fa-offer .lp-close__inner { padding: clamp(64px, 8vw, 104px) 0; }
.fa-offer h2 { max-width: 20ch; margin-bottom: 16px; margin-left: auto; margin-right: auto; }
.fa-offer .eyebrow { color: var(--secondary); margin-bottom: 16px; display: block; font-size: 12.5px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; }
.fa-offer .lp-close__inner > p { max-width: 64ch; margin: 0 auto 40px; font-size: 16px; color: rgba(255, 255, 255, 0.85); line-height: 1.6; }

.fa-offer-card {
  display: grid;
  grid-template-columns: 1.2fr 1.4fr 0.8fr;
  max-width: 860px;
  margin: 0 auto 40px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-tile);
  text-align: left;
}
.fa-offer-col {
  padding: 24px 32px;
  border-left: 1px solid rgba(255, 255, 255, 0.15);
}
.fa-offer-col:first-child {
  border-left: 0;
}
.fa-offer-label {
  display: block;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--secondary);
  margin-bottom: 10px;
}
.fa-offer-col p {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  line-height: 1.4;
}
.fa-offer .btn--light { background: #fff; color: var(--primary); }
.fa-offer .btn--light:hover { background: var(--secondary); color: var(--grey-900); }

@media (max-width: 768px) {
  .fa-offer-card {
    grid-template-columns: 1fr;
  }
  .fa-offer-col {
    border-left: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
  }
  .fa-offer-col:first-child {
    border-top: 0;
  }
}

@media (prefers-reduced-motion: reduce) { .fa-panel.is-active { animation: none !important; } }