/* Layout: header, ticker, section rhythm and each section's composition. */

/* Header: translucent, blurred, border only after scrolling */
.top {
  position: sticky; top: 0; z-index: 10;
  background: rgb(11 23 18 / 0.72);
  -webkit-backdrop-filter: blur(14px) saturate(1.4); backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid transparent; transition: border-color var(--dur-slow) var(--ease);
}
.top.is-scrolled { border-bottom-color: var(--line); }
.top-row { display: flex; align-items: center; justify-content: space-between; min-height: 64px; }
.brand { font: 600 1.45rem/1 var(--font-display); text-decoration: none; letter-spacing: 0.01em; margin: 0; }
a.brand { display: inline-flex; align-items: center; min-height: 44px; }
.top-apply { display: inline-flex; align-items: center; min-height: 44px; padding: 0 4px; font-weight: 600; }

/* Ticker: session and status detail under the nav, on a thin brass rule */
.ticker { border-top: 1px solid var(--hairline); background: linear-gradient(90deg, transparent, var(--brass-line) 30%, var(--brass-line) 70%, transparent) bottom / 100% 1px no-repeat; }
.ticker-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 34px; font-size: var(--fs-micro); letter-spacing: 0.06em; color: var(--sage); }
.status, .session { display: flex; align-items: center; gap: 10px; margin: 0; }
.session { color: var(--sage); }
.session b { color: var(--ivory); font-weight: 400; }
.dot { position: relative; width: 7px; height: 7px; border-radius: 50%; background: var(--brass); box-shadow: 0 0 0 4px var(--brass-soft); flex: none; }
@media (prefers-reduced-motion: no-preference) {
  .dot::after { content: ""; position: absolute; inset: -4px; border-radius: 50%; border: 1px solid var(--brass-line); animation: halo 2.4s ease-out infinite; }
}
@keyframes halo { from { transform: scale(0.6); opacity: 1; } to { transform: scale(2.2); opacity: 0; } }
@media (max-width: 520px) { .session { display: none; } }

/* Section rhythm: alternating surfaces, hairline dividers that draw in */
.sec { position: relative; padding-block: var(--sec-md); }
.sec--sunken { background: var(--sunken); }
.sec--raised { background: var(--raised); }
.sec + .sec::before {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong) 20%, var(--line-strong) 80%, transparent);
  transform-origin: left;
}
@media (prefers-reduced-motion: no-preference) {
  .js .sec + .sec::before { transform: scaleX(0); transition: transform 900ms var(--ease); }
  .js .sec + .sec.is-in::before { transform: scaleX(1); }
}
.head-row { display: grid; gap: 20px; }
@media (min-width: 960px) { .head-row { grid-template-columns: 1fr 1fr; gap: 80px; align-items: end; } }
.sub, .body-copy { max-width: var(--measure); color: var(--sage); }
.sub { margin-top: 20px; }
.head-row .sub { margin-top: 0; }
.fine { margin-top: 28px; font-size: var(--fs-small); color: var(--sage); max-width: var(--measure); }
.big { margin-bottom: 24px; font-size: var(--fs-lead); line-height: 1.5; font-weight: 500; max-width: 40ch; }
.split { display: grid; gap: 40px; }
@media (min-width: 960px) { .split { grid-template-columns: 5fr 7fr; gap: 80px; align-items: start; } }

/* Hero: headline and profile as one asymmetric spread */
.hero { padding-top: clamp(48px, 7vw, 96px); padding-bottom: var(--sec-md); overflow-x: clip; }
.hero-grid { display: grid; gap: 56px; align-items: center; }
@media (min-width: 1000px) {
  .hero-grid { grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: 24px; min-height: min(calc(100vh - 160px), 760px); }
  .hero-copy { grid-column: 1 / 6; }
  .profile { grid-column: 6 / 13; margin-top: 24px; }
}
.lede { margin: 32px 0 40px; max-width: 34ch; font-size: var(--fs-lead); line-height: 1.55; color: var(--sage); }
.price-line { margin-top: 24px; font-size: var(--fs-small); color: var(--sage); }
.price-line .mono { color: var(--ivory); }

/* Plan section: intro beside the desk */
.plan-sec { padding-block: var(--sec-lg); }
.plan-grid { display: grid; gap: 56px; align-items: center; }
@media (min-width: 1000px) { .plan-grid { grid-template-columns: 5fr 7fr; gap: 72px; } }
.plan-intro .kicker { margin-bottom: 20px; }
.plan-intro .body-copy { margin-top: 24px; max-width: 44ch; font-size: 1.125rem; }

/* Program: numbered phases on a brass track that fills on scroll */
.program { padding-block: var(--sec-md); }
.track { position: relative; height: 1px; margin-top: 72px; background: var(--line-strong); }
.track-fill { position: absolute; inset: 0; background: var(--brass); transform-origin: left; transform: scaleX(var(--fill, 1)); }
.phases { list-style: none; margin: 0; padding: 0; display: grid; }
.phases li { position: relative; display: flex; flex-direction: column; gap: 14px; padding: 36px 0 12px; color: var(--sage); }
.phases li::before {
  content: ""; position: absolute; top: -5px; left: 0; width: 9px; height: 9px; border-radius: 50%;
  background: var(--base); border: 1px solid var(--brass);
}
.phases li > p:not(.cp):not(.weeks) { max-width: 36ch; }
.num { font: 500 var(--fs-number)/1 var(--font-display); font-variant-numeric: tabular-nums lining-nums; color: var(--sage); }
.phases h3 { font: 500 2.25rem/1 var(--font-display); color: var(--ivory); }
.cp { margin-top: auto; padding: 16px 18px; border: 1px solid var(--brass-line); border-radius: var(--radius); background: var(--brass-soft); color: var(--ivory); }
.cp .label { display: block; color: var(--brass); margin-bottom: 6px; }
@media (min-width: 900px) {
  .phases { grid-template-columns: repeat(3, 1fr); column-gap: 48px; }
}
@media (max-width: 899px) {
  .track { display: none; }
  .phases { margin-top: 48px; border-left: 1px solid var(--line-strong); }
  .phases li { padding: 0 0 48px 28px; }
  .phases li::before { top: 6px; left: -5px; }
}

/* Your week: vertical timeline, the call is the brass end of the loop */
.timeline { position: relative; list-style: none; margin: 0; padding: 0 0 0 40px; }
.timeline::before {
  content: ""; position: absolute; left: 7px; top: 12px; bottom: 28px; width: 1px;
  background: linear-gradient(var(--line-strong), var(--brass-line)); transform-origin: top;
}
@media (prefers-reduced-motion: no-preference) {
  .js .timeline::before { transform: scaleY(0); transition: transform 1100ms var(--ease); }
  .js .timeline.is-in::before { transform: scaleY(1); }
}
.timeline li { position: relative; display: grid; grid-template-columns: 9.5em 1fr; gap: 20px; padding: 18px 0; border-bottom: 1px solid var(--hairline); color: var(--sage); }
.timeline li::before {
  content: ""; position: absolute; left: -38px; top: 25px; width: 11px; height: 11px; border-radius: 50%;
  background: var(--raised); border: 1px solid var(--line-strong);
}
.timeline li.is-end::before { background: var(--brass); border-color: var(--brass); box-shadow: 0 0 0 5px var(--brass-soft); }
.timeline li::after { content: ""; position: absolute; left: -14px; top: 14px; bottom: 14px; width: 1px; background: var(--brass); transform: scaleY(0); transform-origin: top; }
@media (hover: hover) {
  .timeline li:hover::after { transform: scaleY(1); }
}
@media (hover: hover) and (prefers-reduced-motion: no-preference) { .timeline li::after { transition: transform var(--dur) var(--ease); } }
.time { font-size: var(--fs-small); color: var(--ivory); padding-top: 2px; }
.timeline li.is-end .time { color: var(--brass); }
.timeline strong { color: var(--ivory); font-weight: 600; }
@media (max-width: 560px) { .timeline li { grid-template-columns: 1fr; gap: 4px; } }

/* Proof: large mounted chart with a museum label, then the teacher */
.proof { padding-block: var(--sec-lg); }
.exhibit { margin: 0; display: grid; gap: 20px; }
.mount { padding: clamp(10px, 1.6vw, 18px); border-radius: var(--radius-lg); }
.mount img { width: 100%; border-radius: 3px; background: #fff; box-shadow: 0 0 0 1px rgb(0 0 0 / 0.4); }
.museum { max-width: 30ch; padding-left: 14px; border-left: 1px solid var(--brass-line); font-size: var(--fs-small); line-height: 1.5; color: var(--sage); }
@media (min-width: 1000px) {
  .exhibit { grid-template-columns: 9fr 3fr; column-gap: 32px; align-items: end; }
}
.teach { margin-top: var(--sec-sm); }

/* Fit */
.fit-sec { padding-block: var(--sec-sm); }
.fit { display: grid; gap: 40px; }
@media (min-width: 640px) { .fit { grid-template-columns: 1fr 1fr; } }
.fit h3 { margin-bottom: 12px; }

/* Price: founding seat leads at every width */
.seats { list-style: none; margin: 64px 0 0; padding: 0; display: grid; gap: 16px; }
@media (min-width: 900px) {
  .seats { grid-template-columns: 1.2fr 1fr 1fr; align-items: stretch; }
  .seat--founding { padding: 40px 36px; margin-block: -12px; }
}

/* Apply: the closing moment */
.apply { padding-block: var(--sec-lg) calc(var(--sec-lg) + 24px); overflow: hidden; }
.apply::after {
  content: ""; position: absolute; right: -10%; top: 15%; width: 75%; height: 80%; pointer-events: none;
  background: radial-gradient(closest-side, var(--glow), transparent 75%);
}
.apply-grid { position: relative; z-index: 1; display: grid; gap: 48px; }
@media (min-width: 1000px) { .apply-grid { grid-template-columns: 4fr 7fr; gap: 80px; align-items: start; } }
.apply-head h2 { font-size: var(--fs-h1); }

/* Footer */
.foot { background: var(--sunken); border-top: 1px solid var(--hairline); padding-block: 56px; }
.foot-grid { display: grid; gap: 20px; font-size: var(--fs-small); color: var(--sage); }
@media (min-width: 900px) { .foot-grid { grid-template-columns: 3fr 7fr 2fr; gap: 48px; align-items: start; } }
.foot-legal { max-width: 70ch; line-height: 1.6; }
.foot-copy { font-size: var(--fs-micro); }
@media (min-width: 900px) { .foot-copy { text-align: right; } }