/* Home page — cinematic */

.hero {
  position: relative;
  padding: 90px 0 80px;
  overflow: hidden;
  min-height: 80vh;
  display: flex; align-items: center;
}
.galaxy-bg {
  position: absolute; inset: 0; width: 100%; height: 100%;
  z-index: 0; opacity: 0.7;
}
.hero-fade {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background:
    radial-gradient(ellipse 80% 50% at 50% 20%, transparent, var(--paper) 75%),
    linear-gradient(var(--paper), transparent 20%, transparent 70%, var(--paper));
}
.hero-inner { position: relative; z-index: 2; width: 100%; }

.hero .stamp {
  position: absolute; top: -40px; right: 0;
  font-family: var(--mono); font-size: .7rem;
  letter-spacing: .08em; text-transform: uppercase;
  color: var(--ink-3);
  border: 1px dashed var(--rule-2);
  padding: 6px 10px; border-radius: 4px;
  transform: rotate(1.5deg);
  background: color-mix(in oklch, var(--paper) 85%, transparent);
}

.eyebrow.amber { color: var(--amber-ink); }

.hero-title {
  font-size: clamp(3.5rem, 9vw, 8rem);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 0.95;
  margin-top: 14px;
  display: flex; flex-direction: column;
  text-wrap: balance;
}
.hero-title .l1, .hero-title .l2, .hero-title .l3 { display: block; }
.hero-title .l2 { margin-left: clamp(20px, 5vw, 80px); }
.hero-title .l3 { margin-left: clamp(40px, 9vw, 160px); }
.hero-title em {
  font-style: italic; font-weight: 500;
  color: var(--amber-ink);
  position: relative;
}
.hero-title em::after {
  content: '';
  position: absolute; left: -2px; right: -2px; bottom: 8%;
  height: 24%;
  background: var(--amber);
  z-index: -1; opacity: .35;
  border-radius: 2px;
}
@keyframes heroIn { to { opacity: 1; transform: translateY(0); } }
@keyframes underswipe { to { transform: scaleX(1); } }

.lede {
  font-family: var(--serif);
  font-size: clamp(1.15rem, 1.6vw, 1.4rem);
  line-height: 1.45;
  color: var(--ink-2);
  margin-top: 30px;
  max-width: 640px;
  font-style: italic;
  font-weight: 400;
}
.hero-cta { display:flex; gap:12px; margin-top:36px; flex-wrap:wrap; }
.btn.lg { padding: 14px 22px; font-size: .98rem; border-radius: 12px; }
.hero-chips { margin-top: 26px; display:flex; gap:10px; flex-wrap:wrap; }
.hero-demo-anchor { height: 80px; }

/* Demo section */
.demo-section {
  padding: 40px 0 80px;
  position: relative;
}
.demo-eyebrow {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 20px; flex-wrap: wrap; gap: 10px;
}

/* Stats band */
.stats-band { padding: 10px 0; }
.stats-bar {
  display: grid; grid-template-columns: repeat(4,1fr); gap: 20px;
  padding: 28px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
@media (max-width:640px){ .stats-bar { grid-template-columns: 1fr 1fr; } }
.stat .n {
  font-family: var(--serif); font-size: clamp(2rem, 3.6vw, 2.8rem);
  font-weight: 600; letter-spacing: -0.02em; color: var(--ink); line-height: 1;
}
.stat .l {
  font-size: .78rem; color: var(--ink-3); margin-top: 6px;
  font-family: var(--mono); letter-spacing: .06em; text-transform: uppercase;
}

/* Section heads */
.section-head { max-width: 720px; margin-bottom: 48px; }
.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.02em; line-height: 1.05;
  margin-top: 8px;
  text-wrap: balance;
}
.section-sub {
  margin-top: 14px; color: var(--ink-3);
  font-size: 1.08rem; max-width: 560px;
  line-height: 1.55;
}

/* Tracks */
.tracks { padding: 80px 0 60px; }
.track + .track { margin-top: 72px; }
.track-head {
  display: grid; grid-template-columns: 1fr auto; gap: 32px;
  margin-bottom: 28px; align-items: end;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--rule);
}
@media (max-width:780px){ .track-head { grid-template-columns: 1fr; gap: 12px; } }
.track-head h2 { font-size: clamp(1.6rem,2.4vw,2rem); margin-top: 4px; }
.track-head .track-num {
  font-family: var(--mono); color: var(--amber-ink); font-size: .78rem;
  letter-spacing: .08em; text-transform: uppercase;
}
.track-head .hint { color: var(--ink-3); font-size: .95rem; max-width: 520px; margin-top: 6px; }
.track-prog { text-align: right; min-width: 180px; }
.track-prog-bar {
  width: 180px; height: 4px;
  background: var(--rule);
  border-radius: 2px; overflow: hidden; margin-left: auto;
}
.track-prog-bar > div {
  height: 100%; background: var(--amber);
  transition: width .5s cubic-bezier(.2,.7,.2,1);
}
.track-prog-num {
  font-family: var(--mono); font-size: .85rem;
  margin-top: 6px; color: var(--ink-2);
}
.track-prog-num .muted { color: var(--ink-3); }

.lesson-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
@media (max-width:980px){ .lesson-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width:640px){ .lesson-grid { grid-template-columns: 1fr; } }

.lesson-card {
  display: flex; flex-direction: column;
  padding: 24px 22px 20px;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 14px;
  text-decoration: none;
  position: relative;
  overflow: hidden;
  transition: border-color .2s, transform .2s, box-shadow .2s;
  min-height: 230px;
}
.lesson-card::before {
  content: '';
  position: absolute; inset: auto 0 0 0; height: 2px;
  background: var(--amber);
  transform: scaleX(0); transform-origin: left;
  transition: transform .3s cubic-bezier(.2,.7,.2,1);
}
.lesson-card:hover {
  border-color: var(--amber-ink);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}
.lesson-card:hover::before { transform: scaleX(1); }
.lesson-card .num {
  font-family: var(--mono); font-size: .72rem; color: var(--amber-ink);
  letter-spacing: .1em; text-transform: uppercase;
}
.lesson-card h3 { margin-top: 8px; font-size: 1.22rem; color: var(--ink); line-height: 1.2; }
.lesson-card .sub { color: var(--ink-2); font-size: .9rem; margin-top: 8px; line-height: 1.5; }
.lesson-card .hook {
  font-family: var(--serif); font-style: italic;
  color: var(--ink-3); font-size: .88rem; margin-top: 12px;
  border-left: 2px solid var(--rule-2); padding-left: 10px;
  flex: 1;
}
.lesson-card .foot {
  display: flex; justify-content: space-between; align-items: center; margin-top: 14px;
  font-size: .78rem; color: var(--ink-3); font-family: var(--mono);
  letter-spacing: .04em;
}
.lesson-card .arrow { color: var(--amber-ink); font-weight: 500; }
.lesson-card.done {
  background: color-mix(in oklch, var(--ok) 5%, var(--paper));
  border-color: color-mix(in oklch, var(--ok) 30%, var(--rule));
}
.lesson-card.done::after {
  content: '✓'; position: absolute; top: 18px; right: 20px;
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--ok); color: var(--paper);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: .8rem; font-weight: 700;
}
.lesson-card.done .arrow { color: var(--ok-ink); }

/* Progress section */
.progress-section { padding: 40px 0 80px; }
.badges-panel {
  background: var(--ink); color: oklch(0.92 0.015 75);
  border-radius: 24px;
  padding: 48px;
  display: grid; grid-template-columns: 1fr 2fr; gap: 48px;
  position: relative; overflow: hidden;
}
.badges-panel .eyebrow { color: var(--amber) !important; }
.badges-intro p { color: oklch(0.88 0.015 75) !important; }
.badges-panel .btn {
  color: oklch(0.92 0.015 75) !important;
  border-color: oklch(0.5 0.02 60) !important;
  background: oklch(0.28 0.02 60) !important;
}
.badges-panel .btn:hover { background: oklch(0.34 0.02 60) !important; }
.badges-panel::before {
  content: '';
  position: absolute; inset: -80px -80px auto auto;
  width: 300px; height: 300px;
  background: radial-gradient(circle, var(--amber), transparent 60%);
  opacity: .15; pointer-events: none;
}
@media (max-width:780px){ .badges-panel { grid-template-columns: 1fr; padding: 32px; } }
.badges-panel { min-width: 0; }
.badges-intro { min-width: 0; }
.badges-intro h2 { color: var(--paper); font-size: clamp(1.6rem,2.4vw,2rem); letter-spacing: -0.02em; }
.badges-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; min-width: 0; }
/* Very narrow viewports: the fixed 320px intro paragraph and 3-up badge grid
   push the dark panel past the viewport. Cap the copy to the panel width and
   drop the grid to 2-up so nothing extends past 320px. */
@media (max-width:480px){
  .badges-panel { padding: 24px; }
  .badges-intro p { max-width: 100% !important; }
}
@media (max-width:360px){
  .badges-grid { grid-template-columns: repeat(2,1fr); }
}
.badge {
  padding: 18px 14px; border-radius: 12px;
  background: oklch(0.3 0.02 60);
  border: 1px solid oklch(0.42 0.02 60);
  text-align: center;
  position: relative;
  transition: transform .15s;
  color: oklch(0.94 0.015 75);
}
.badge.earned {
  background: var(--amber); color: oklch(.18 .04 50); border-color: var(--amber-ink);
  animation: badgePop .5s cubic-bezier(.2,.8,.2,1);
}
.badge.earned .hint { color: oklch(.22 .04 50); }
@keyframes badgePop { 0% { transform: scale(.8); } 60% { transform: scale(1.05); } 100% { transform: scale(1); } }
.badge .icon { font-size: 1.8rem; line-height: 1; color: oklch(0.85 0.08 70); }
.badge.earned .icon { color: oklch(.18 .04 50); }
.badge .name { font-size: .82rem; font-weight: 600; margin-top: 8px; color: inherit; overflow-wrap: anywhere; }
.badge .hint { font-size: .7rem; color: oklch(0.75 0.015 70); margin-top: 4px; letter-spacing: .02em; line-height: 1.35; overflow-wrap: anywhere; }
.badge.locked { opacity: .55; }
.badge.locked .icon { color: oklch(0.65 0.015 70); }

/* Orrery — centerpiece */
.orrery-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  height: 720px;
}
@media (max-width: 900px) { .orrery-wrap { grid-template-columns: 1fr; height: auto; min-height: 720px; } }
.orrery-stage {
  position: relative;
  background:
    radial-gradient(ellipse at 50% 50%, var(--amber-wash), var(--paper-2) 70%),
    var(--paper-2);
  border-right: 1px solid var(--rule);
  overflow: hidden;
  min-height: 0;
  height: 100%;
}
@media (max-width: 900px) { .orrery-stage { border-right: 0; border-bottom: 1px solid var(--rule); } }
.orrery-svg { width: 100%; height: 100%; display: block; }

/* Prompt Foundry (replaces radial orrery) */
.orrery-stage-stack {
  padding: 32px 28px 28px;
  display: flex; flex-direction: column; gap: 22px;
  background:
    radial-gradient(ellipse 80% 40% at 50% 0%, color-mix(in oklch, var(--amber-wash) 70%, transparent), transparent 70%),
    var(--paper-2);
  min-height: 0;
  height: 100%;
  overflow: hidden;
}
.stack-head { color: var(--ink); flex-shrink: 0; }
.stack-head .tiny { color: var(--amber-ink); font-weight: 600; }
.stack-list {
  display: flex; flex-direction: column; gap: 10px;
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
}
.stack-card {
  position: relative;
  display: flex; align-items: stretch;
  padding: 0; margin: 0;
  background: var(--paper);
  border: 1px solid var(--rule-2);
  border-radius: 12px;
  text-align: left;
  cursor: pointer;
  overflow: hidden;
  font-family: inherit;
  transition: border-color .2s, background .25s, transform .15s, box-shadow .2s, opacity .25s;
}
.stack-card:hover {
  border-color: var(--accent);
  transform: translateX(2px);
  box-shadow: 0 2px 10px color-mix(in oklch, var(--accent) 10%, transparent);
}
.stack-card.off {
  background: color-mix(in oklch, var(--paper) 70%, transparent);
  border-style: dashed;
  opacity: 0.65;
}
.stack-card.off:hover { opacity: 0.85; }
.stack-card .sc-rail {
  width: 4px; flex-shrink: 0;
  background: var(--accent);
  transition: background .25s, opacity .25s;
}
.stack-card.off .sc-rail { background: var(--rule-2); }
.stack-card .sc-main { flex: 1; padding: 12px 16px 13px; }
.stack-card .sc-top {
  display: flex; align-items: center; gap: 12px;
}
.stack-card .sc-idx {
  font-family: var(--mono); font-size: .66rem; font-weight: 700;
  letter-spacing: .1em;
  color: var(--ink-3);
  padding: 3px 7px;
  background: var(--paper-2);
  border: 1px solid var(--rule-2);
  border-radius: 5px;
}
.stack-card.on .sc-idx {
  color: var(--accent-ink, var(--accent)); border-color: color-mix(in oklch, var(--accent) 40%, var(--rule-2));
  background: color-mix(in oklch, var(--accent) 8%, var(--paper-2));
}
.stack-card .sc-label {
  font-family: var(--serif); font-size: 1.12rem; font-weight: 600;
  letter-spacing: -0.005em;
  color: var(--ink);
  flex: 1;
}
.stack-card.off .sc-label { color: var(--ink-3); font-weight: 500; }
.stack-card .sc-weight {
  font-family: var(--mono); font-size: .7rem; font-weight: 600;
  color: var(--accent-ink, var(--accent));
  letter-spacing: .02em;
}
.stack-card.off .sc-weight { color: var(--ink-4, var(--ink-3)); opacity: 0.5; }
.stack-card .sc-toggle {
  width: 32px; height: 18px; border-radius: 9px;
  background: var(--rule);
  position: relative;
  transition: background .25s;
  flex-shrink: 0;
}
.stack-card.on .sc-toggle { background: var(--accent); }
.stack-card .sc-toggle-dot {
  position: absolute; top: 2px; left: 2px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--paper);
  box-shadow: 0 1px 2px rgba(0,0,0,0.15);
  transition: left .25s cubic-bezier(.2,.8,.2,1);
}
.stack-card.on .sc-toggle-dot { left: 16px; }
.stack-card .sc-content {
  margin-top: 8px;
  font-size: .85rem; line-height: 1.45;
  color: var(--ink-2);
}
.stack-card.off .sc-content { margin-top: 6px; }
.stack-card .sc-off-text {
  font-family: var(--mono); font-size: .72rem;
  color: var(--ink-4, var(--ink-3)); opacity: 0.7;
  font-style: italic; letter-spacing: .02em;
}
.orrery-quality {
  margin-top: 8px;
  align-self: flex-start;
  background: color-mix(in oklch, var(--paper) 94%, transparent);
  backdrop-filter: blur(8px);
  padding: 14px 18px; border-radius: 12px;
  border: 1px solid var(--rule);
  box-shadow: var(--shadow-sm);
  min-width: 180px;
}
.orrery-quality .q-num {
  font-family: var(--serif); font-size: 2.6rem; font-weight: 700;
  line-height: 1; letter-spacing: -0.03em; margin-top: 4px;
  transition: color .3s;
}
.orrery-quality .q-label {
  font-family: var(--mono); font-size: .72rem;
  color: var(--ink-3); letter-spacing: .05em; margin-top: 4px;
  text-transform: uppercase;
}
.orrery-quality .q-bar {
  margin-top: 10px;
  height: 4px; background: var(--rule); border-radius: 2px; overflow: hidden;
}
.orrery-quality .q-bar > div {
  height: 100%; transition: width .5s cubic-bezier(.2,.7,.2,1), background .3s;
}
.orrery-side {
  display: flex; flex-direction: column;
  background: var(--paper);
  min-height: 0;
  height: 100%;
  overflow: hidden;
}
.orrery-side .os-head { padding: 24px 24px 0; flex-shrink: 0; }
.orrery-side .os-assembled {
  padding: 14px 24px;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  flex: 0 0 auto;
  max-height: 38%;
  overflow-y: auto;
  background: var(--paper-2);
}
.orrery-side .os-runbar {
  padding: 14px 24px;
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  border-bottom: 1px solid var(--rule);
  flex-shrink: 0;
}
.orrery-side .os-output {
  padding: 18px 24px 24px;
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
}
.cta-band {
  padding: 60px 0; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
  background: var(--paper-2);
}
.cta-inner { display: flex; justify-content: space-between; align-items: center; gap: 30px; flex-wrap: wrap; }

/* Footer */
.site-foot { padding: 40px 0 60px; color: var(--ink-3); font-size: .85rem; }