/* FDE Quest — landing + upgrade page styles. Loaded AFTER styles.css; extends the v1 system. */

/* ---------- shared page chrome ---------- */

.site-header { border-bottom: 1px solid var(--line); background: rgba(13, 20, 32, .82); backdrop-filter: blur(8px); position: sticky; top: 0; z-index: 50; }
.site-header .header-top { max-width: 1060px; margin: 0 auto; display: flex; align-items: center; gap: 18px; padding: 16px 24px; }
.header-links { margin-left: auto; display: flex; align-items: center; gap: 16px; }
.header-links a { color: var(--ink-2); text-decoration: none; font-size: 13.5px; }
.header-links a:hover { color: var(--ink); }
.header-links a.btn { color: var(--bg); }

.page-footer { border-top: 1px solid var(--line); margin-top: 80px; padding: 28px 24px 40px; text-align: center; color: var(--ink-3); font-size: 12.5px; }
.page-footer .mono { letter-spacing: .08em; }

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

.hero { max-width: 1060px; margin: 0 auto; padding: 64px 24px 40px; display: grid; grid-template-columns: 1.15fr 1fr; gap: 40px; align-items: center; }
.hero h1 { font-size: 42px; line-height: 1.1; margin: 14px 0 14px; }
.hero h1 em { color: var(--amber); font-style: normal; }
.hero .sub { color: var(--ink-2); font-size: 16px; max-width: 56ch; margin-bottom: 26px; }
.hero .sub b { color: var(--ink); font-weight: 600; }
.hero .sub .mono { font-size: 13.5px; color: var(--amber); }

/* mission preview panel — CSS-animated fake pipeline */
.preview-panel { position: relative; overflow: hidden; padding: 18px 18px 14px; }
.preview-panel .eyebrow { margin-bottom: 12px; }
.preview-svg { width: 100%; height: auto; display: block; }
.preview-svg .plabel { font-family: var(--font-mono); font-size: 9px; fill: var(--ink-3); letter-spacing: .08em; text-transform: uppercase; }
.preview-svg .pnode { fill: var(--surface-2); stroke: var(--line); }
.preview-svg .pnode.hot { stroke: rgba(245, 177, 76, .5); }
.preview-svg .proute { fill: none; stroke: rgba(158, 178, 208, .28); stroke-width: 1.5; stroke-dasharray: 5 5; }
.preview-dot { r: 3.5; }
.preview-dot.d1 { fill: var(--amber-deep); animation: prevflow1 3.6s linear infinite; }
.preview-dot.d2 { fill: var(--cyan); animation: prevflow2 3.6s linear infinite; animation-delay: 1.2s; }
.preview-dot.d3 { fill: var(--violet); animation: prevflow3 3.6s linear infinite; animation-delay: 2.4s; }
@keyframes prevflow1 {
  0% { transform: translate(38px, 75px); opacity: 0; }
  8% { opacity: 1; }
  42% { transform: translate(175px, 75px); }
  58% { transform: translate(215px, 75px); }
  92% { transform: translate(330px, 32px); opacity: 1; }
  100% { transform: translate(340px, 32px); opacity: 0; }
}
@keyframes prevflow2 {
  0% { transform: translate(38px, 75px); opacity: 0; }
  8% { opacity: 1; }
  42% { transform: translate(175px, 75px); }
  58% { transform: translate(215px, 75px); }
  92% { transform: translate(330px, 75px); opacity: 1; }
  100% { transform: translate(340px, 75px); opacity: 0; }
}
@keyframes prevflow3 {
  0% { transform: translate(38px, 75px); opacity: 0; }
  8% { opacity: 1; }
  42% { transform: translate(175px, 75px); }
  58% { transform: translate(215px, 75px); }
  92% { transform: translate(330px, 118px); opacity: 1; }
  100% { transform: translate(340px, 118px); opacity: 0; }
}
.preview-tick { font-family: var(--font-mono); font-size: 10.5px; color: var(--ink-3); letter-spacing: .06em; margin-top: 10px; border-top: 1px dashed var(--line); padding-top: 10px; display: flex; justify-content: space-between; }
.preview-tick em { color: var(--green); font-style: normal; animation: prevpulse 2.4s ease-in-out infinite; }
@keyframes prevpulse { 0%, 100% { opacity: .55; } 50% { opacity: 1; } }
@media (prefers-reduced-motion: reduce) {
  .preview-dot.d1, .preview-dot.d2, .preview-dot.d3 { animation: none; opacity: 1; transform: translate(175px, 75px); }
  .preview-tick em { animation: none; }
}

/* ---------- how it works — tracking-rail dots ---------- */

.howit { max-width: 1060px; margin: 0 auto; padding: 36px 24px 8px; }
.howit-rail { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin-top: 22px; }
.howstep { position: relative; padding: 0 22px 0 0; }
.howstep .dot {
  width: 34px; height: 34px; border-radius: 50%; border: 2px solid var(--amber);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: 12px; color: var(--amber);
  background: var(--surface); margin-bottom: 14px; position: relative; z-index: 1;
}
.howstep::before {
  content: ""; position: absolute; top: 16px; left: 34px; right: 0;
  border-top: 2px dashed rgba(158, 178, 208, .22);
}
.howstep:last-child::before { display: none; }
.howstep h3 { font-size: 17px; margin-bottom: 6px; }
.howstep p { font-size: 13.5px; color: var(--ink-2); max-width: 34ch; }

/* ---------- curriculum strip ---------- */

.curriculum { max-width: 1060px; margin: 0 auto; padding: 46px 24px 8px; }
.mission-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 20px; }
.mcard { display: flex; flex-direction: column; gap: 8px; padding: 18px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); transition: transform .18s ease, border-color .18s ease; }
.mcard:hover { transform: translateY(-2px); border-color: rgba(245, 177, 76, .4); }
.mcard .ord { font-family: var(--font-mono); font-size: 11px; color: var(--ink-3); letter-spacing: .12em; }
.mcard .nm { font-family: var(--font-display); font-weight: 600; font-size: 16px; }
.mcard .ind { font-size: 12.5px; color: var(--ink-2); }
.mcard .meta { display: flex; align-items: center; gap: 8px; margin-top: auto; padding-top: 8px; }
.chip { font-family: var(--font-mono); font-size: 10px; letter-spacing: .12em; text-transform: uppercase; padding: 3px 9px; border-radius: 999px; border: 1px solid var(--line); color: var(--ink-2); }
.chip.free { color: var(--green); border-color: rgba(63, 164, 112, .5); }
.chip.pro { color: var(--amber); border-color: rgba(245, 177, 76, .5); }

/* ---------- auth panel ---------- */

.auth-section { max-width: 1060px; margin: 0 auto; padding: 52px 24px 20px; }
.auth-panel { max-width: 480px; margin: 18px auto 0; overflow: hidden; }
.auth-slider { display: flex; width: 200%; transition: transform .45s cubic-bezier(.22, 1, .36, 1); }
.auth-slider.to-code { transform: translateX(-50%); }
.auth-pane { width: 50%; flex-shrink: 0; padding: 4px; }
.auth-pane h2 { font-size: 20px; margin-bottom: 6px; }
.auth-pane .hint { font-size: 13px; color: var(--ink-3); margin-bottom: 16px; }
.email-row { display: flex; gap: 10px; }
.email-row input {
  flex: 1; min-width: 0; background: var(--surface-2); border: 1px solid var(--line);
  border-radius: 8px; padding: 12px 14px; color: var(--ink); font: inherit;
}
.email-row input:focus-visible { outline: 2px solid var(--amber); outline-offset: 1px; border-color: transparent; }
.auth-err { min-height: 18px; font-size: 12.5px; color: var(--crit); margin-top: 10px; }

.code-row { display: flex; gap: 8px; justify-content: center; margin: 10px 0 4px; }
.code-row input {
  width: 46px; height: 56px; text-align: center; background: var(--surface-2);
  border: 1px solid var(--line); border-radius: 8px; color: var(--ink);
  font-family: var(--font-mono); font-size: 24px; caret-color: var(--amber);
}
.code-row input:focus-visible { outline: 2px solid var(--amber); outline-offset: 1px; border-color: transparent; }
.code-row.shake { animation: authshake .4s ease; }
.code-row.shake input { border-color: rgba(217, 106, 94, .7); }
@keyframes authshake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-7px); } 40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); } 80% { transform: translateX(3px); }
}
@media (prefers-reduced-motion: reduce) {
  .auth-slider { transition: none; }
  .code-row.shake { animation: none; }
}

.demo-chip {
  display: flex; align-items: center; gap: 10px; justify-content: center;
  margin: 14px auto 8px; padding: 9px 14px; max-width: 320px;
  background: rgba(245, 177, 76, .08); border: 1px solid rgba(245, 177, 76, .45); border-radius: 8px;
}
.demo-chip .lbl { font-family: var(--font-mono); font-size: 10px; letter-spacing: .16em; color: var(--amber); }
.demo-chip .code { font-family: var(--font-mono); font-size: 17px; letter-spacing: .3em; color: var(--ink); }
.demo-chip .copy { font-family: var(--font-mono); font-size: 10.5px; color: var(--ink-3); border: 1px solid var(--line); border-radius: 5px; padding: 3px 8px; }
.demo-chip .copy:hover { color: var(--amber); border-color: rgba(245, 177, 76, .5); }
.demo-caption { font-size: 12px; color: var(--ink-3); text-align: center; max-width: 40ch; margin: 0 auto 16px; }
.code-actions { display: flex; justify-content: center; gap: 14px; align-items: center; }
.linkish { font-size: 12.5px; color: var(--ink-3); text-decoration: underline; }
.linkish:hover { color: var(--ink-2); }

/* ---------- upgrade page ---------- */

.upgrade-main { max-width: 1060px; margin: 0 auto; padding: 40px 24px 60px; }
.demo-banner {
  display: flex; align-items: center; gap: 10px; justify-content: center;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: .06em; color: var(--warn);
  background: rgba(217, 161, 59, .08); border: 1px solid rgba(217, 161, 59, .4);
  border-radius: 8px; padding: 10px 16px; margin-bottom: 34px;
}
.plan-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 26px; align-items: stretch; }
.plancard { display: flex; flex-direction: column; gap: 10px; padding: 24px 22px; position: relative; }
.plancard.hot { border-color: rgba(245, 177, 76, .6); box-shadow: 0 0 0 1px rgba(245, 177, 76, .35), 0 14px 40px rgba(0, 0, 0, .35); }
.plancard .pop {
  position: absolute; top: -11px; left: 50%; transform: translateX(-50%);
  font-family: var(--font-mono); font-size: 9.5px; letter-spacing: .16em; text-transform: uppercase;
  background: var(--amber); color: var(--bg); border-radius: 999px; padding: 4px 12px; white-space: nowrap;
}
.plancard .pname { font-family: var(--font-display); font-weight: 600; font-size: 18px; }
.plancard .price { font-family: var(--font-mono); font-size: 30px; color: var(--ink); }
.plancard .price .per { font-size: 13px; color: var(--ink-3); }
.plancard .pdesc { font-size: 13.5px; color: var(--ink-2); flex: 1; }
.plancard .btn { width: 100%; text-align: center; }
.plancard .stripe-note { font-size: 11.5px; color: var(--ink-3); text-align: center; margin-top: -4px; }
.cap-copy { text-align: center; color: var(--ink-2); font-size: 13.5px; max-width: 62ch; margin: 34px auto 0; }
.cap-copy b { color: var(--amber); font-weight: 600; }

/* payment success takeover */
.pay-takeover {
  position: fixed; inset: 0; z-index: 900; display: none;
  align-items: center; justify-content: center; background: rgba(13, 20, 32, .92); backdrop-filter: blur(4px);
}
.pay-takeover.on { display: flex; }
.pay-stamp {
  border: 3px solid var(--green); border-radius: 12px; padding: 26px 40px; text-align: center;
  transform: rotate(-4deg) scale(1.6); opacity: 0;
  animation: stampin .5s cubic-bezier(.2, .9, .3, 1.2) forwards;
}
.pay-stamp .big { font-family: var(--font-mono); font-size: 26px; letter-spacing: .12em; color: var(--green); text-transform: uppercase; }
.pay-stamp .sml { font-family: var(--font-mono); font-size: 13px; letter-spacing: .18em; color: var(--ink-2); text-transform: uppercase; margin-top: 8px; }
@keyframes stampin { to { transform: rotate(-4deg) scale(1); opacity: 1; } }
@media (prefers-reduced-motion: reduce) {
  .pay-stamp { animation: none; transform: rotate(-4deg) scale(1); opacity: 1; }
}

/* ---------- responsive ---------- */

@media (max-width: 880px) {
  .hero { grid-template-columns: 1fr; padding-top: 44px; }
  .hero h1 { font-size: 32px; }
  .howit-rail { grid-template-columns: 1fr; gap: 20px; }
  .howstep::before { display: none; }
  .mission-strip { grid-template-columns: 1fr 1fr; }
  .plan-grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .mission-strip { grid-template-columns: 1fr; }
  .email-row { flex-direction: column; }
  .code-row input { width: 40px; height: 50px; font-size: 20px; }
}

/* ================= v3 landing ================= */

.hero-ctas { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.ghost-btn {
  background: transparent !important; color: var(--amber) !important;
  border: 1px solid rgba(245, 177, 76, .5);
}
.ghost-btn:hover { border-color: var(--amber); }

.hero-stats {
  display: grid; grid-template-columns: repeat(4, auto); gap: 26px;
  margin-top: 30px; padding-top: 18px; border-top: 1px dashed var(--line);
}
.hstat b { display: block; font-size: 26px; color: var(--amber); font-weight: 500; }
.hstat span { font-size: 11.5px; color: var(--ink-3); line-height: 1.35; display: block; max-width: 14ch; }

/* preview ops feed */
.preview-feed { display: flex; flex-direction: column; gap: 5px; margin-top: 10px; min-height: 66px; overflow: hidden; }
.pf-row {
  font-size: 10.5px; color: var(--ink-2); background: var(--surface-2);
  border: 1px solid var(--line); border-radius: 6px; padding: 5px 9px;
  animation: feedin .35s ease both; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.pf-row .fa { color: var(--green); font-weight: 500; }
.pf-row .fd { color: var(--amber); font-weight: 500; }
.pf-row .fh { color: var(--violet); font-weight: 500; }
@keyframes feedin { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .pf-row { animation: none; } }

/* how-it-works: 4 steps */
.howit-rail.four { grid-template-columns: repeat(4, 1fr); }

/* concepts band */
.concepts-band { max-width: 1060px; margin: 0 auto; padding: 46px 24px 8px; }
.concept-cloud { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.ccloud-chip {
  font-size: 11px; letter-spacing: .08em; padding: 6px 12px; border-radius: 999px;
  border: 1px solid var(--line); color: var(--ink-2); background: var(--surface);
  transition: border-color .2s, color .2s, transform .2s;
}
.ccloud-chip:hover { border-color: rgba(47, 157, 180, .55); color: var(--cyan); transform: translateY(-1px); }
.reveal.in .ccloud-chip { animation: chipin .4s ease both; animation-delay: calc(var(--i) * 28ms); }
@keyframes chipin { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.band-note { font-size: 13px; color: var(--ink-3); margin-top: 16px; max-width: 62ch; }

/* curriculum: 20 cards */
.mission-strip { grid-template-columns: repeat(4, 1fr); }
.mcard.reveal-item { opacity: 0; transform: translateY(10px); }
.mcard.reveal-item.in {
  opacity: 1; transform: none;
  transition: opacity .45s ease, transform .45s ease;
  transition-delay: calc(var(--i) * 22ms);
}

/* pricing band */
.pricing-band { max-width: 1060px; margin: 0 auto; padding: 52px 24px 8px; }
.price-duo { display: grid; grid-template-columns: 1fr 1.15fr; gap: 18px; margin-top: 22px; max-width: 780px; }
.pricecard { display: flex; flex-direction: column; gap: 10px; padding: 26px 24px; position: relative; }
.pricecard.hot { border-color: rgba(245, 177, 76, .6); box-shadow: 0 0 0 1px rgba(245, 177, 76, .35), 0 14px 40px rgba(0, 0, 0, .35); }
.pricecard .pname { font-family: var(--font-display); font-weight: 600; font-size: 17px; }
.pricecard .price { font-size: 34px; color: var(--ink); }
.pricecard .price .per { font-size: 13px; color: var(--ink-3); }
.pricecard .pdesc { font-size: 13.5px; color: var(--ink-2); flex: 1; }
.pricecard .pdesc em { color: var(--amber); font-style: normal; }
.pricecard .btn { text-align: center; }

/* auth clip fix — pane 2 must never leak into the panel padding */
.auth-panel { overflow: visible; }
.auth-clip { overflow: hidden; margin: -4px; padding: 4px; }

/* scroll reveal */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .55s ease, transform .55s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal, .mcard.reveal-item { opacity: 1; transform: none; transition: none; }
  .reveal.in .ccloud-chip { animation: none; }
}

@media (max-width: 880px) {
  .hero-stats { grid-template-columns: repeat(2, auto); gap: 16px 26px; }
  .howit-rail.four { grid-template-columns: 1fr 1fr; gap: 20px; }
  .mission-strip { grid-template-columns: 1fr 1fr; }
  .price-duo { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .howit-rail.four { grid-template-columns: 1fr; }
  .mission-strip { grid-template-columns: 1fr; }
}

/* ---------- v3 upgrade page ---------- */

.upg-duo { display: grid; grid-template-columns: 1.35fr 1fr; gap: 18px; margin-top: 26px; align-items: start; }
.upg-main-card { gap: 14px; }
.upg-list { list-style: none; display: flex; flex-direction: column; gap: 9px; margin: 4px 0 8px; }
.upg-list li { font-size: 13.5px; color: var(--ink-2); padding-left: 22px; position: relative; }
.upg-list li::before {
  content: "✓"; position: absolute; left: 2px; color: var(--green);
  font-family: var(--font-mono); font-size: 12px;
}
.upg-list li b { color: var(--ink); font-weight: 600; }
.upg-side { display: flex; flex-direction: column; gap: 14px; }
.upg-note p { font-size: 13px; color: var(--ink-2); margin-top: 8px; }
.upg-note b { color: var(--amber); font-weight: 600; }
@media (max-width: 880px) { .upg-duo { grid-template-columns: 1fr; } }

/* ============================================================= */
/* v4 — landing chapters, glyphs, mobile polish                  */
/* ============================================================= */

.mission-strip .chapter-h { margin: 18px 0 2px; }
.mission-strip .mcard { border-top: 2px solid var(--ch, var(--line)); }
.mission-strip .glyph-row { display: flex; align-items: center; gap: 10px; margin-top: 6px; }
.mission-strip .glyph-row .ind-glyph { flex-shrink: 0; }

/* landing + auth mobile pass */
@media (max-width: 560px) {
  .site-header .header-top { padding: 12px 14px; flex-wrap: wrap; }
  .hero { padding: 32px 16px 28px; gap: 24px; }
  .hero h1 { font-size: clamp(28px, 8.5vw, 36px); }
  .hero-stats { flex-wrap: wrap; gap: 14px; }
  section { scroll-margin-top: 70px; }
  .auth-panel { padding: 20px 16px; }
  .code-row input { width: 42px; height: 52px; font-size: 20px; }
  .pricing-band { padding: 26px 16px; }
  .upgrade-main { padding-left: 14px; padding-right: 14px; }
  .upg-main-card .price { font-size: 38px; }
}