/* Prop Challenge Survival System — one stylesheet, no build step.
   Aesthetic: trading terminal meets test protocol. Dark ground, monospace numbers,
   colour reserved almost entirely for traffic-light semantics. */

:root {
  /* Palette in the NOMAVIO family: deep blue-black ground, warm off-white text.
     No gold anywhere — colour belongs to the traffic light. */
  --bg:        #070D17;
  --bg-panel:  #0C1626;
  --bg-inset:  #131F33;
  --line:      rgba(154, 146, 132, 0.22);
  --line-soft: rgba(154, 146, 132, 0.12);

  --fg:        #EDE7DB;
  --fg-muted:  #9A9284;
  --fg-dim:    #7D7466;

  --green: #46B37B;
  --amber: #D9A441;
  --red:   #E5534B;

  --cta-bg: #F2EFE9;
  --cta-fg: #070D17;

  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
          "Liberation Mono", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
          sans-serif;

  --wrap: 42rem;
  --pad: 1.25rem;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 400 1rem/1.6 var(--sans);
  letter-spacing: 0.005em;
}

h1, h2, h3 { line-height: 1.2; letter-spacing: -0.015em; margin: 0 0 0.6em; }
h1 { font-size: 1.75rem; font-weight: 600; }
h2 { font-size: 1.3rem; font-weight: 600; }
h3 { font-size: 1.02rem; font-weight: 600; }
p { margin: 0 0 1em; }
strong { font-weight: 650; color: var(--fg); }
em { font-style: italic; }

a { color: var(--fg); text-decoration-color: var(--fg-dim); text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--fg); }

:focus-visible {
  outline: 2px solid var(--fg);
  outline-offset: 2px;
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
}
.skip-link:focus-visible {
  left: var(--pad);
  top: 0.5rem;
  z-index: 10;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  padding: 0.5rem 0.75rem;
  font: 500 0.8rem var(--mono);
}

/* ---------------------------------------------------------------- masthead */

.masthead {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  align-items: baseline;
  justify-content: space-between;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 1rem var(--pad);
  border-bottom: 1px solid var(--line-soft);
}
.brand {
  font: 500 0.66rem/1 var(--mono);
  letter-spacing: 0.12em;
  color: var(--fg-muted);
}
a.brand { text-decoration: none; }
.brand-meta {
  font: 400 0.66rem/1 var(--mono);
  letter-spacing: 0.08em;
  color: var(--fg-dim);
}

/* ---------------------------------------------------------------- layout */

main { display: block; }

.hero,
.band,
.snapshot {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 2.5rem var(--pad);
}

.band { border-top: 1px solid var(--line-soft); }

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

.eyebrow {
  font: 400 0.72rem/1.4 var(--mono);
  letter-spacing: 0.08em;
  color: var(--fg-dim);
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.h1-dim { color: var(--fg-muted); }

.lede {
  color: var(--fg-muted);
  font-size: 1.02rem;
  margin-bottom: 2rem;
}

/* -------- signature element: the envelope as an account statement */

.statement {
  margin: 0 0 2rem;
  padding: 1.1rem 1rem 1.2rem;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: 4px;
}
.statement-caption {
  font: 500 0.86rem/1.5 var(--mono);
  color: var(--fg);
  padding-bottom: 0.9rem;
  margin-bottom: 0.9rem;
  border-bottom: 1px dashed var(--line);
}
.statement-rows {
  list-style: none;
  margin: 0;
  padding: 0;
  font: 400 0.86rem/1.7 var(--mono);
  font-variant-numeric: tabular-nums;
}
.row {
  display: grid;
  grid-template-columns: 1.1rem minmax(5.4rem, auto) 1fr;
  gap: 0 0.5rem;
  align-items: baseline;
}
.op  { color: var(--fg-dim); }
.amt { text-align: right; white-space: nowrap; }
.lbl { color: var(--fg-muted); font-size: 0.8rem; }

.row--void .amt,
.row--void .lbl { color: var(--fg-dim); }
.row--void s { text-decoration-thickness: 1px; }

.row--sum { border-top: 1px solid var(--line); margin-top: 0.35rem; padding-top: 0.35rem; }
.row--total {
  border-top: 1px solid var(--line);
  margin-top: 0.35rem;
  padding-top: 0.45rem;
  font-weight: 600;
  font-size: 1.15em; /* ~15% above the other statement rows, at any breakpoint */
  color: #FFFFFF;
}
.row--total .op { color: #FFFFFF; }
.row--total .lbl { color: #FFFFFF; font-size: 0.82rem; }

/* ---------------------------------------------------------------- buttons */

.btn {
  display: inline-block;
  font: 600 0.92rem/1 var(--sans);
  text-decoration: none;
  padding: 0.85rem 1.25rem;
  border-radius: 3px;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn--buy {
  background: var(--cta-bg);
  color: var(--cta-fg);
}
.btn--buy:hover { background: #fff; }
.btn--block { display: block; text-align: center; }

.btn--ghost {
  background: var(--bg-inset);
  color: var(--fg);
  border-color: var(--line);
  font-family: var(--mono);
  font-size: 0.82rem;
  padding: 0.7rem 1rem;
  white-space: nowrap;
}
.btn--ghost:hover { border-color: var(--fg-dim); }
.btn--ghost:disabled { opacity: 0.5; cursor: default; }

.cta-block { margin-top: 0.5rem; }
.cta-note {
  font: 400 0.76rem/1.5 var(--mono);
  color: var(--fg-dim);
  margin: 0.7rem 0 0;
}
.cta-alt { margin: 1rem 0 0; font-size: 0.88rem; }
.cta-alt a { color: var(--fg-muted); }

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

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
}
.panel-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1rem;
  align-items: baseline;
  justify-content: space-between;
  padding: 0.6rem 1rem;
  background: var(--bg-inset);
  border-bottom: 1px solid var(--line);
}
.panel-title {
  font: 600 0.72rem/1.4 var(--mono);
  letter-spacing: 0.1em;
  color: var(--fg);
}
.panel-tag {
  font: 400 0.68rem/1.4 var(--mono);
  color: var(--fg-dim);
}
.panel-body { padding: 1.1rem 1rem 1.25rem; }
.panel-intro { font-size: 0.88rem; color: var(--fg-muted); margin-bottom: 1.25rem; }

/* ---------------------------------------------------------------- form */

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.9rem;
  margin: 0 0 1.25rem;
}
.field { min-width: 0; }
.field label {
  display: block;
  font: 400 0.72rem/1.4 var(--mono);
  letter-spacing: 0.04em;
  color: var(--fg-muted);
  margin-bottom: 0.35rem;
}
.input-wrap {
  display: flex;
  align-items: center;
  background: var(--bg-inset);
  border: 1px solid var(--line);
  border-radius: 3px;
}
.input-wrap:focus-within {
  border-color: var(--fg-dim);
  outline: 2px solid var(--fg);
  outline-offset: 1px;
}
.unit {
  padding: 0 0.1rem 0 0.7rem;
  font: 400 0.9rem var(--mono);
  color: var(--fg-dim);
}
.unit--suffix { padding: 0 0.7rem 0 0.1rem; }

.input-wrap input {
  flex: 1 1 auto;
  min-width: 0;
  width: 100%;
  background: transparent;
  border: 0;
  color: var(--fg);
  font: 500 0.95rem var(--mono);
  font-variant-numeric: tabular-nums;
  padding: 0.65rem 0.7rem;
}
.input-wrap input:focus { outline: none; }

.field-note {
  font-size: 0.74rem;
  line-height: 1.5;
  color: var(--fg-dim);
  margin: 0.35rem 0 0;
}

.check {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.7rem 0.75rem;
  background: var(--bg-inset);
  border: 1px solid var(--line);
  border-radius: 3px;
}
.check input {
  flex: none;
  width: 1rem;
  height: 1rem;
  margin: 0.15rem 0 0;
  accent-color: var(--fg-muted);
}
.check label {
  margin: 0;
  font-family: var(--sans);
  font-size: 0.84rem;
  line-height: 1.45;
  color: var(--fg-muted);
  letter-spacing: 0;
}

/* ---------------------------------------------------------------- result */

.result { display: block; }

.status {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--status, var(--fg-dim));
  border-radius: 3px;
  background: color-mix(in srgb, var(--status, var(--fg-dim)) 10%, transparent);
  transition: border-color 160ms ease, background-color 160ms ease, color 160ms ease;
}
.status[data-status="SAFE"]    { --status: var(--green); }
.status[data-status="CAUTION"] { --status: var(--amber); }
.status[data-status="DANGER"]  { --status: var(--red); }

.status-dot {
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 50%;
  background: var(--status, var(--fg-dim));
  flex: none;
}
.status-text {
  font: 700 1.15rem/1 var(--mono);
  letter-spacing: 0.14em;
  color: var(--status, var(--fg));
}

.readout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 1px 0 0;
  padding: 0;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}
.cell {
  background: var(--bg-panel);
  padding: 0.8rem 0.9rem;
}
.cell dt {
  font: 400 0.7rem/1.4 var(--mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--fg-dim);
}
.cell dd { margin: 0.25rem 0 0; }
.num {
  font: 600 1.25rem/1.2 var(--mono);
  font-variant-numeric: tabular-nums;
  color: var(--fg);
}
.cell--primary .num { font-size: 1.6rem; }
.cell-note {
  font-size: 0.72rem;
  line-height: 1.45;
  color: var(--fg-dim);
  margin: 0.3rem 0 0;
}

.capacity {
  font: 400 0.84rem/1.6 var(--mono);
  color: var(--fg-muted);
  margin: 0.9rem 0 0;
}
.hint {
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--fg);
  background: color-mix(in srgb, var(--amber) 9%, transparent);
  border-left: 2px solid var(--amber);
  padding: 0.7rem 0.85rem;
  margin: 0.9rem 0 0;
}

/* ---------------------------------------------------------------- inline forms */

.inline-form {
  margin: 1.5rem 0 0;
  padding-top: 1.25rem;
  border-top: 1px dashed var(--line);
}
.inline-form > label {
  display: block;
  font: 500 0.84rem/1.5 var(--sans);
  color: var(--fg);
  margin-bottom: 0.55rem;
}
.inline-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.inline-row input {
  flex: 1 1 12rem;
  min-width: 0;
  background: var(--bg-inset);
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--fg);
  font: 400 0.9rem var(--mono);
  padding: 0.65rem 0.7rem;
}
.inline-row input::placeholder { color: var(--fg-dim); }

.form-msg {
  font: 400 0.78rem/1.5 var(--mono);
  color: var(--fg-dim);
  margin: 0.55rem 0 0;
  min-height: 1.2em;
}
.form-msg[data-state="ok"]    { color: var(--green); }
.form-msg[data-state="error"] { color: var(--red); }

/* ---------------------------------------------------------------- pain */

.pain { margin-bottom: 1.75rem; }
.pain-line {
  font: 600 1rem/1.45 var(--sans);
  color: var(--fg);
  margin-bottom: 0.4rem;
}
.pain p:last-child { color: var(--fg-muted); margin: 0; font-size: 0.94rem; }

.transition {
  border-left: 2px solid var(--line);
  padding-left: 1rem;
  color: var(--fg-muted);
  font-size: 0.94rem;
  margin: 0;
}
.fnref {
  font: 400 0.76rem var(--mono);
  color: var(--fg-dim);
  white-space: nowrap;
}

/* ---------------------------------------------------------------- mechanism */

.band > p { color: var(--fg-muted); font-size: 0.96rem; }

.mech-list {
  list-style: none;
  counter-reset: mech;
  margin: 1.25rem 0 0;
  padding: 0;
}
.mech-list li {
  counter-increment: mech;
  position: relative;
  padding: 0 0 0 2.4rem;
  margin-bottom: 1rem;
  color: var(--fg-muted);
  font-size: 0.94rem;
}
.mech-list li::before {
  content: counter(mech, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.15em;
  font: 500 0.76rem var(--mono);
  color: var(--fg-dim);
}

/* ---------------------------------------------------------------- what's inside */

.tabs {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  border-top: 1px solid var(--line-soft);
}
.tabs li {
  display: grid;
  grid-template-columns: 2.2rem 1fr;
  gap: 0 0.5rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--line-soft);
}
.tab-n {
  grid-row: span 2;
  font: 500 0.74rem/1.6 var(--mono);
  color: var(--fg-dim);
}
.tab-name { font-weight: 600; font-size: 0.94rem; }
.tab-desc { font-size: 0.86rem; color: var(--fg-muted); }

.aside {
  font-size: 0.9rem;
  color: var(--fg-muted);
  border-left: 2px solid var(--line);
  padding-left: 1rem;
}

.honesty {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1rem;
  margin-top: 1.5rem;
}
.honesty-head { font: 600 0.94rem var(--mono); color: var(--fg); margin-bottom: 0.5rem; }
.honesty p:last-child { margin: 0; font-size: 0.9rem; color: var(--fg-muted); }

/* ---------------------------------------------------------------- faq / not for */

.faq { margin-bottom: 1.5rem; }
.faq h3 { color: var(--fg); }
.faq p { color: var(--fg-muted); font-size: 0.94rem; margin: 0; }

.notfor { list-style: none; margin: 0 0 1.25rem; padding: 0; }
.notfor li {
  position: relative;
  padding-left: 1.2rem;
  margin-bottom: 0.6rem;
  color: var(--fg-muted);
  font-size: 0.94rem;
}
.notfor li::before {
  content: "×";
  position: absolute;
  left: 0;
  color: var(--fg-dim);
  font-family: var(--mono);
}

/* ---------------------------------------------------------------- offer */

.price {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.6rem;
  margin-bottom: 0.35rem;
}
.price-now {
  font: 700 2.1rem/1 var(--mono);
  font-variant-numeric: tabular-nums;
}
.price-then {
  font: 400 0.82rem var(--mono);
  color: var(--fg-dim);
  text-decoration: line-through;
}
.price-terms {
  font: 400 0.8rem/1.5 var(--mono);
  color: var(--fg-muted);
  margin-bottom: 1.1rem;
}
.offer-list { list-style: none; margin: 0 0 1.4rem; padding: 0; }
.offer-list li {
  position: relative;
  padding-left: 1.3rem;
  margin-bottom: 0.55rem;
  font-size: 0.92rem;
  color: var(--fg-muted);
}
.offer-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--fg-dim);
  font-family: var(--mono);
}

/* ---------------------------------------------------------------- footer */

.footer {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 2rem var(--pad) 3rem;
  border-top: 1px solid var(--line-soft);
  color: var(--fg-dim);
  font-size: 0.78rem;
  line-height: 1.6;
}
.footer p { margin: 0 0 0.8rem; }
.sources, .legal { font-family: var(--mono); font-size: 0.72rem; }

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

@media (min-width: 34rem) {
  .grid { grid-template-columns: 1fr 1fr; }
  .field--wide { grid-column: 1 / -1; }
  .readout { grid-template-columns: 1fr 1fr; }
  h1 { font-size: 2.1rem; }
  h2 { font-size: 1.45rem; }
  .statement-rows { font-size: 0.95rem; }
  .row { grid-template-columns: 1.2rem minmax(6rem, auto) 1fr; }
}

@media (min-width: 48rem) {
  :root { --pad: 2rem; }
  .hero, .band, .snapshot { padding-top: 3.5rem; padding-bottom: 3.5rem; }
  h1 { font-size: 2.4rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}