/* ============================================================
   BDC ACADEMY — Interactive learning experience
   Warm, friendly, beginner-first.
   ============================================================ */

:root {
  --bg:          #0B0B0C;
  --bg-2:        #131316;
  --paper:       #16161A;
  --ink:         #ECEAE1;
  --ink-2:       #B6B3A8;
  --ink-3:       #8A8B8F;
  --muted:       #7C7A72;
  --rule:        rgba(236,234,225,0.10);
  --rule-2:      rgba(236,234,225,0.18);
  --blue:        #6F8DBF;
  --blue-deep:   #4E6FA5;
  --blue-soft:   rgba(111,141,191,0.14);
  --red:         #C7402D;
  --red-deep:    #8C231B;
  --red-soft:    rgba(199,64,45,0.14);
  --green:       #6FA37A;
  --green-deep:  #3E6E4A;
  --green-soft:  rgba(111,163,122,0.14);
  --amber:       #C99A4A;
  --amber-soft:  rgba(201,154,74,0.14);
  --dark:        #131316;
  --dark-2:      #1B1B1F;
  --on-dark:     #ECEAE1;
  --on-dark-2:   #B6B3A8;
  --on-dark-3:   #7C7A72;


  --sans: "Geist", "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Geist Mono", ui-monospace, "JetBrains Mono", "SFMono-Regular", Menlo, monospace;

  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
  --r-xl: 28px;
  --shadow-soft: 0 1px 0 rgba(26,37,64,0.04), 0 18px 36px -24px rgba(26,37,64,0.16);
  --shadow-pop:  0 6px 0 rgba(26,37,64,0.05), 0 28px 48px -22px rgba(26,37,64,0.22);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  min-height: 100vh;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

button { font-family: inherit; cursor: pointer; }
button:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }

/* ===== App layout ===== */
.app {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
}

/* Top bar with brand + progress */
.topbar {
  position: sticky; top: 0; z-index: 10;
  background: rgba(11,11,12,0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
  padding: 14px 28px;
  display: flex; align-items: center; gap: 24px;
}
.home-link {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border-radius: 8px;
  background: var(--paper); color: var(--ink-2);
  border: 1px solid var(--rule); text-decoration: none;
  font-size: 14px; transition: background .15s, color .15s, transform .08s;
  flex-shrink: 0;
}
.home-link:hover { background: var(--rule-2); color: var(--ink); transform: translateY(-1px); }
.brand {
  font-weight: 700; font-size: 15px; color: var(--ink);
  display: flex; align-items: center; gap: 10px;
  letter-spacing: -0.005em;
}
.brand .dot {
  width: 22px; height: 22px; border-radius: 6px;
  background: var(--blue);
  display: grid; place-items: center;
  color: #fff; font: 700 12px/1 var(--sans);
}
.progress {
  flex: 1;
  display: flex; gap: 6px;
  align-items: center;
}
.progress .pip {
  flex: 1;
  height: 6px;
  border-radius: 3px;
  background: var(--rule-2);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: background 0.2s;
}
.progress .pip.done { background: var(--green); }
.progress .pip.current { background: var(--blue); }
.progress .pip.current::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  animation: shimmer 1.6s linear infinite;
}
@keyframes shimmer { from { transform: translateX(-100%);} to { transform: translateX(100%);} }
.progress-label {
  font: 600 12px/1 var(--mono);
  letter-spacing: 0.12em;
  color: var(--muted);
  text-transform: uppercase;
  white-space: nowrap;
}

/* Stage */
.stage {
  display: grid;
  place-items: start center;
  padding: 48px 28px 96px;
}
.screen {
  width: 100%;
  max-width: 880px;
  animation: rise 0.4s cubic-bezier(0.2, 0.7, 0.2, 1);
}
@keyframes rise {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Footer nav */
.footer {
  position: sticky; bottom: 0;
  background: rgba(11,11,12,0.88);
  backdrop-filter: blur(8px);
  border-top: 1px solid var(--rule);
  padding: 14px 28px;
  display: flex; gap: 12px; align-items: center; justify-content: space-between;
}
.footer .hint {
  font-size: 13px; color: var(--ink-3);
  flex: 1; text-align: center;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px;
  border-radius: 12px;
  font: 600 15px/1 var(--sans);
  border: 1px solid transparent;
  transition: transform 0.08s ease, box-shadow 0.15s ease, background 0.2s;
  background: var(--paper);
  color: var(--ink);
  border-color: var(--rule-2);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn.primary {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
  box-shadow: 0 1px 0 rgba(0,0,0,0.1), 0 12px 24px -12px rgba(26,37,64,0.4);
}
.btn.primary:hover { background: var(--bg-2); }
.btn.brand {
  background: var(--blue); color: #fff; border-color: var(--blue);
  box-shadow: 0 1px 0 rgba(0,0,0,0.1), 0 12px 24px -12px rgba(42,111,219,0.55);
}
.btn.brand:hover { background: var(--blue-deep); border-color: var(--blue-deep); }
.btn.lg { padding: 16px 30px; font-size: 16px; border-radius: 14px; }
.btn.ghost { background: transparent; border-color: transparent; color: var(--ink-3); }
.btn.ghost:hover { color: var(--ink); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

.btn .arrow { font-size: 16px; transition: transform 0.15s; }
.btn:hover .arrow { transform: translateX(2px); }

/* ===== Generic content blocks ===== */
.eyebrow {
  font: 600 11px/1 var(--mono);
  letter-spacing: 0.32em;
  color: var(--blue);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.h1 {
  font-size: 56px;
  line-height: 1.0;
  font-weight: 800;
  letter-spacing: -0.025em;
  margin: 0 0 16px;
  color: var(--ink);
}
.h2 {
  font-size: 38px;
  line-height: 1.05;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
  color: var(--ink);
}
.h3 {
  font-size: 22px;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 28px 0 10px;
  color: var(--ink);
}
.lead {
  font-size: 19px;
  color: var(--ink-2);
  line-height: 1.45;
  max-width: 56ch;
  margin: 0 0 22px;
}
p { margin: 0 0 14px; color: var(--ink-2); }
.muted { color: var(--ink-3); font-size: 14px; }
strong { color: var(--ink); font-weight: 700; }

.card {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--r-lg);
  padding: 28px;
  box-shadow: var(--shadow-soft);
}
.card.dark { background: var(--dark); color: var(--on-dark); border-color: transparent; }
.card.dark p { color: var(--on-dark-2); }
.card.dark strong { color: var(--on-dark); }

/* ===== Screen 1: Welcome ===== */
.welcome {
  text-align: center;
  padding-top: 40px;
}
.welcome .wave {
  font-size: 64px;
  display: inline-block;
  animation: wave 1.6s ease-in-out infinite;
  transform-origin: 70% 80%;
}
@keyframes wave {
  0%,60%,100% { transform: rotate(0deg); }
  10% { transform: rotate(-12deg); }
  20% { transform: rotate(14deg); }
  30% { transform: rotate(-10deg); }
  40% { transform: rotate(8deg); }
  50% { transform: rotate(-4deg); }
}
.welcome .h1 { font-size: 72px; }
.welcome .lead { margin: 0 auto 32px; }
.welcome .perks {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px;
  margin: 32px 0 36px;
  max-width: 680px; margin-left: auto; margin-right: auto;
}
.welcome .perk {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  padding: 16px 14px;
  text-align: center;
}
.welcome .perk .ico { font-size: 22px; margin-bottom: 6px; display: block; }
.welcome .perk .l { font-size: 13px; color: var(--ink-3); }
.welcome .perk .v { font-size: 17px; font-weight: 700; color: var(--ink); }

/* ===== Screen 2: How it works (animated steps) ===== */
.flow {
  display: flex; flex-direction: column; gap: 14px;
  margin: 22px 0;
}
.flow-step {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 18px;
  align-items: start;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  padding: 18px 20px;
  opacity: 0;
  transform: translateX(-12px);
  transition: opacity 0.5s, transform 0.5s;
}
.flow-step.in { opacity: 1; transform: translateX(0); }
.flow-step .n {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--blue-soft);
  color: var(--blue-deep);
  font: 800 16px/40px var(--sans);
  text-align: center;
}
.flow-step .head {
  font: 700 12px/1.2 var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
  margin: 6px 0 6px;
}
.flow-step .desc { font-size: 14.5px; color: var(--ink-2); margin: 0; }

.callout-tip {
  background: var(--amber-soft);
  border-left: 4px solid var(--amber);
  border-radius: 8px;
  padding: 14px 18px;
  font-size: 15px;
  color: var(--amber);
  margin: 18px 0;
}
.callout-tip strong { color: var(--amber); }

/* ===== Screen 3: LIT chart animated ===== */
.chart-stage {
  background: var(--dark);
  border-radius: var(--r-lg);
  padding: 24px;
  box-shadow: var(--shadow-pop);
  margin: 20px 0 14px;
  position: relative;
  overflow: hidden;
}
.chart-stage .frame {
  position: relative;
  background: var(--dark-2);
  border-radius: var(--r-md);
  height: 360px;
  overflow: hidden;
}
.chart-stage svg { display: block; width: 100%; height: 100%; }
.chart-stage .legend {
  display: flex; gap: 18px; flex-wrap: wrap;
  margin-top: 16px;
  font: 500 12px/1 var(--mono);
  color: var(--on-dark-2);
}
.chart-stage .legend .sw { width: 12px; height: 12px; border-radius: 2px; display: inline-block; vertical-align: middle; margin-right: 6px; }

.lesson-step {
  background: var(--paper);
  border-radius: var(--r-md);
  border: 1px solid var(--rule);
  padding: 18px 22px;
  margin: 14px 0;
  min-height: 84px;
  transition: background 0.3s;
}
.lesson-step .lbl {
  font: 700 11px/1 var(--mono);
  letter-spacing: 0.16em;
  color: var(--blue);
  text-transform: uppercase;
  margin-bottom: 6px;
}
.lesson-step .body { font-size: 16px; color: var(--ink); line-height: 1.45; }
.lesson-step .step-row {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 18px;
  padding: 14px 0;
  border-top: 1px solid var(--rule);
}
.lesson-step .step-row:first-of-type { border-top: none; padding-top: 10px; }
.lesson-step .step-lbl {
  font: 700 11px/1.3 var(--mono);
  letter-spacing: 0.14em;
  color: var(--blue);
  text-transform: uppercase;
}
.lesson-step .step-body { font-size: 15px; color: var(--ink); line-height: 1.5; }
@media (max-width: 640px) {
  .lesson-step .step-row { grid-template-columns: 1fr; gap: 6px; }
}

.chart-controls {
  display: flex; gap: 10px; justify-content: center;
  margin: 8px 0 20px;
}

/* ===== Screen 4: Alert reader interactive ===== */
.alert-reader {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 22px;
  margin: 20px 0;
}
.alert-card {
  background: var(--dark);
  color: var(--on-dark);
  border-radius: var(--r-md);
  padding: 22px;
  font-family: var(--mono);
  font-size: 13px;
  border-left: 4px solid var(--green);
}
.alert-card .a-head {
  display: flex; justify-content: space-between;
  font-weight: 700; color: var(--on-dark);
  margin-bottom: 14px;
  font-size: 13px;
}
.alert-card .pair { color: #8FB3F2; }
.alert-card .dir  { color: #5DE0A3; }
.alert-card .verdict { color: #5DE0A3; }
.alert-card .a-bar { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.alert-card .a-bar .meter { flex: 0 0 130px; height: 7px; background: rgba(255,255,255,0.08); border-radius: 2px; overflow: hidden; }
.alert-card .a-bar .meter i { display: block; height: 100%; background: #5DE0A3; }
.alert-card .quote { color: var(--on-dark-2); border-left: 2px solid rgba(255,255,255,0.15); padding-left: 10px; margin-bottom: 16px; font-style: italic; }
.alert-card .grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 14px 18px;
}
.field-pill {
  cursor: pointer;
  position: relative;
  padding: 8px 10px;
  margin: -8px -10px;
  border-radius: 8px;
  transition: background 0.15s;
}
.field-pill:hover, .field-pill.active { background: rgba(143,179,242,0.12); }
.field-pill.active { box-shadow: inset 0 0 0 1.5px rgba(143,179,242,0.5); }
.field-pill .lbl { color: var(--on-dark-3); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 3px; }
.field-pill .val { color: var(--on-dark); font-size: 13px; }
.field-pill .val.blue  { color: #8FB3F2; }
.field-pill .val.red   { color: #F08A7E; }
.field-pill .val.green { color: #5DE0A3; }

.explainer {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  padding: 22px;
  position: sticky;
  top: 88px;
  height: fit-content;
}
.explainer .ex-default {
  text-align: center;
  color: var(--ink-3);
  font-size: 14px;
}
.explainer .ex-default .point { font-size: 32px; margin-bottom: 10px; display: block; }
.explainer .ex-title {
  font: 700 12px/1 var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 6px;
}
.explainer .ex-name { font-size: 22px; font-weight: 800; color: var(--ink); margin: 0 0 6px; letter-spacing: -0.01em; }
.explainer .ex-desc { font-size: 14.5px; color: var(--ink-2); margin: 0 0 12px; line-height: 1.5; }
.explainer .ex-do { font-size: 13.5px; color: var(--green-deep); background: var(--green-soft); padding: 10px 12px; border-radius: 8px; }
.explainer .ex-do strong { color: var(--green-deep); }

/* ===== Screen 5: Trade sim ===== */
.sim-card {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--r-lg);
  padding: 24px;
  margin: 16px 0;
}
.sim-card .sim-head {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 14px;
}
.sim-card .sim-tag {
  font: 700 11px/1 var(--mono);
  letter-spacing: 0.16em;
  color: var(--blue);
  text-transform: uppercase;
}
.sim-card .sim-q { font-size: 19px; font-weight: 700; color: var(--ink); margin: 6px 0 14px; }
.sim-card .sim-meta {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px;
  background: var(--bg-2);
  border-radius: 10px;
  padding: 14px;
  margin: 12px 0;
}
.sim-meta .k { font: 600 10px/1 var(--mono); letter-spacing: 0.14em; color: var(--muted); text-transform: uppercase; margin-bottom: 4px; }
.sim-meta .v { font-size: 14px; color: var(--ink); font-family: var(--mono); }
.sim-meta .v.blue { color: var(--blue-deep); }
.sim-meta .v.red  { color: var(--red-deep); }
.sim-meta .v.green{ color: var(--green-deep); }

.sim-detail {
  background: var(--red-soft);
  border-left: 4px solid var(--red);
  border-radius: 8px;
  padding: 12px 16px;
  margin: 12px 0;
  font-size: 14px;
  color: #F0A89C;
}
.sim-detail.calm { background: var(--blue-soft); border-color: var(--blue); color: #9FB6DC; }
.sim-detail strong { color: inherit; }

.sim-actions { display: flex; gap: 12px; margin-top: 16px; }
.sim-actions .btn { flex: 1; justify-content: center; padding: 14px; font-size: 15px; }
.sim-actions .go { background: var(--green); color: #fff; border-color: var(--green); }
.sim-actions .go:hover { background: var(--green-deep); border-color: var(--green-deep); }
.sim-actions .no { background: var(--red); color: #fff; border-color: var(--red); }
.sim-actions .no:hover { background: var(--red-deep); border-color: var(--red-deep); }

.sim-feedback {
  margin-top: 16px;
  padding: 16px 18px;
  border-radius: 10px;
  border-left: 4px solid var(--green);
  background: var(--green-soft);
  color: var(--green-deep);
  animation: rise 0.3s;
}
.sim-feedback.wrong { background: var(--red-soft); border-color: var(--red); color: #F0A89C; }
.sim-feedback .ftitle { font-weight: 700; margin-bottom: 4px; }

.sim-score {
  text-align: center;
  padding: 28px;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--r-lg);
}
.sim-score .big {
  font-size: 64px; font-weight: 800; color: var(--blue);
  letter-spacing: -0.02em; line-height: 1;
}

/* ===== Screen 6: Lot calculator ===== */
.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 18px 0;
}
.calc-form .field-block { margin-bottom: 18px; }
.calc-form label {
  display: block;
  font: 600 11px/1 var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 6px;
}
.calc-form input[type=number] {
  width: 100%;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1.5px solid var(--rule-2);
  font: 600 17px/1.2 var(--mono);
  color: var(--ink);
  background: var(--paper);
  transition: border 0.15s, box-shadow 0.15s;
}
.calc-form input[type=number]:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(42,111,219,0.12);
}
.option-row {
  display: flex; gap: 6px; flex-wrap: wrap;
}
.opt {
  background: var(--paper);
  border: 1.5px solid var(--rule-2);
  border-radius: 999px;
  padding: 8px 14px;
  font: 600 13px/1 var(--sans);
  color: var(--ink-2);
  cursor: pointer;
  transition: all 0.15s;
}
.opt:hover { border-color: var(--ink-3); }
.opt.active { background: var(--ink); color: #fff; border-color: var(--ink); }
.opt.brand.active { background: var(--blue); border-color: var(--blue); }

.calc-result {
  background: var(--dark);
  color: var(--on-dark);
  border-radius: var(--r-lg);
  padding: 24px;
  text-align: center;
}
.calc-result .label {
  font: 700 11px/1 var(--mono);
  letter-spacing: 0.18em;
  color: var(--on-dark-3);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.calc-result .lot {
  font: 800 72px/1 var(--sans);
  letter-spacing: -0.03em;
  color: #5DE0A3;
}
.calc-result .lot-sub {
  font: 600 13px/1.2 var(--mono);
  color: var(--on-dark-3);
  margin-top: 8px;
}
.calc-result hr {
  border: 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  margin: 18px 0;
}
.calc-result .risk-row {
  display: flex; justify-content: space-between; gap: 16px;
  font-size: 14px; color: var(--on-dark-2);
  margin: 4px 0;
}
.calc-result .risk-row .v { color: var(--on-dark); font-family: var(--mono); }

.calc-explain {
  background: var(--blue-soft);
  border-radius: 10px;
  padding: 14px 18px;
  margin-top: 16px;
  font-size: 14px;
  color: #9FB6DC;
}
.calc-explain code {
  display: block;
  background: rgba(236,234,225,0.06);
  padding: 8px 10px;
  border-radius: 6px;
  margin-top: 6px;
  font: 600 13px var(--mono);
  color: var(--blue-deep);
}

/* ===== Screen 7: Checklist ===== */
.cl {
  display: flex; flex-direction: column; gap: 10px;
  margin: 18px 0;
}
.cl-item {
  background: var(--paper);
  border: 1.5px solid var(--rule);
  border-radius: var(--r-md);
  padding: 16px 20px;
  cursor: pointer;
  display: grid;
  grid-template-columns: 28px 1fr auto;
  gap: 14px;
  align-items: center;
  transition: all 0.15s;
}
.cl-item:hover { border-color: var(--ink-3); }
.cl-item.checked {
  background: var(--green-soft);
  border-color: var(--green);
}
.cl-box {
  width: 22px; height: 22px;
  border-radius: 6px;
  border: 2px solid var(--rule-2);
  display: grid; place-items: center;
  color: transparent;
  transition: all 0.15s;
  font: 700 15px/1 var(--sans);
}
.cl-item.checked .cl-box {
  background: var(--green);
  border-color: var(--green);
  color: #fff;
}
.cl-text { font-size: 15.5px; font-weight: 600; color: var(--ink); }
.cl-text .sub { display: block; font-size: 13px; color: var(--ink-3); font-weight: 500; margin-top: 2px; }
.cl-item.checked .cl-text { color: var(--green-deep); }
.cl-tag {
  font: 600 10px/1 var(--mono); letter-spacing: 0.14em;
  color: var(--muted); text-transform: uppercase;
}

.cl-verdict {
  margin-top: 20px;
  padding: 22px 26px;
  border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: space-between;
  background: var(--bg-2);
  border: 1.5px dashed var(--rule-2);
}
.cl-verdict.go { background: var(--green-soft); border: 0; }
.cl-verdict.no { background: var(--red-soft); border: 0; }
.cl-verdict .v-tag { font: 800 32px/1 var(--sans); letter-spacing: -0.02em; }
.cl-verdict.go .v-tag { color: var(--green-deep); }
.cl-verdict.no .v-tag { color: var(--red-deep); }
.cl-verdict .v-msg { font-size: 14px; color: var(--ink-2); flex: 1; padding: 0 18px; }
.cl-verdict.go .v-msg { color: var(--green-deep); }
.cl-verdict.no .v-msg { color: var(--red-deep); }

/* ===== Screen 8: Rules flashcards ===== */
.flash-deck {
  position: relative;
  height: 320px;
  margin: 24px 0;
}
.flash-card {
  position: absolute; inset: 0;
  background: var(--paper);
  border-radius: var(--r-xl);
  padding: 40px;
  display: flex; flex-direction: column; justify-content: center;
  box-shadow: var(--shadow-pop);
  border: 1px solid var(--rule);
  transition: transform 0.4s cubic-bezier(0.2, 0.7, 0.2, 1), opacity 0.4s;
}
.flash-card.behind-1 { transform: translateY(14px) scale(0.96); opacity: 0.55; pointer-events: none; }
.flash-card.behind-2 { transform: translateY(28px) scale(0.92); opacity: 0.28; pointer-events: none; }
.flash-card.gone { transform: translateX(-120%) rotate(-6deg); opacity: 0; pointer-events: none; }
.flash-card .n {
  font: 800 80px/1 var(--sans); letter-spacing: -0.04em;
  color: var(--red);
  margin: 0 0 8px;
}
.flash-card .t {
  font-size: 24px; font-weight: 800; color: var(--ink);
  margin: 0 0 12px; letter-spacing: -0.015em;
}
.flash-card .d {
  font-size: 15.5px; color: var(--ink-2); line-height: 1.5;
}
.flash-card .count {
  position: absolute; top: 24px; right: 28px;
  font: 600 12px/1 var(--mono); letter-spacing: 0.12em;
  color: var(--muted);
}

.flash-controls {
  display: flex; gap: 14px; justify-content: center;
  margin-bottom: 6px;
}

/* ===== Screen 9: Final ===== */
.final {
  text-align: center;
  padding-top: 20px;
}
.final .confetti { font-size: 56px; margin-bottom: 12px; display: block; }
.final .h1 { font-size: 56px; }
.final .recap {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 32px auto;
  max-width: 640px;
  text-align: left;
}
.final .recap .item {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  padding: 14px 18px;
  display: flex; align-items: center; gap: 12px;
}
.final .recap .check {
  width: 26px; height: 26px;
  background: var(--green);
  color: #fff;
  border-radius: 50%;
  display: grid; place-items: center;
  font-weight: 800;
  flex-shrink: 0;
}
.final .recap .label { font-size: 14.5px; font-weight: 600; color: var(--ink); }

.final-cta {
  display: flex; gap: 12px; justify-content: center; flex-wrap: wrap;
  margin-top: 28px;
}

/* ===== Responsive ===== */
@media (max-width: 760px) {
  .topbar { padding: 12px 16px; gap: 12px; }
  .stage { padding: 32px 16px 80px; }
  .h1 { font-size: 42px; }
  .h2 { font-size: 30px; }
  .welcome .h1 { font-size: 52px; }
  .welcome .perks { grid-template-columns: 1fr; max-width: 320px; }
  .alert-reader { grid-template-columns: 1fr; }
  .explainer { position: static; }
  .calc-grid { grid-template-columns: 1fr; }
  .sim-card .sim-meta { grid-template-columns: 1fr 1fr; }
  .final .recap { grid-template-columns: 1fr; }
  .chart-stage .frame { height: 280px; }
  .footer { padding: 12px 16px; }
}