/* ============================================================
   IPPT Score Guide — design tokens
   Palette drawn from SAF field aesthetics:
   fatigue green, webbing khaki, signal orange (PT kit), brass gold
   ============================================================ */
:root {
  --ink:        #1b231a;   /* deep fatigue green-black */
  --pine:       #2c3a28;   /* uniform green */
  --olive:      #5b6b46;   /* webbing olive */
  --khaki:      #d8d4c2;   /* canvas khaki */
  --field:      #eceadf;   /* page background — khaki-tinted, not cream */
  --signal:     #e8501e;   /* PT signal orange (accent) */
  --signal-dk:  #c43e12;
  --silver:     #8d96a3;
  --gold:       #b8860b;
  --paper:      #f7f6f0;

  --display: "Barlow Condensed", sans-serif;
  --body: "Barlow", sans-serif;
  --mono: "IBM Plex Mono", monospace;

  --maxw: 1060px;
  --radius: 4px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  font-family: var(--body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--field);
}

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}

a { color: var(--signal-dk); text-decoration-thickness: 1.5px; text-underline-offset: 3px; }
a:hover { color: var(--signal); }
:focus-visible { outline: 3px solid var(--signal); outline-offset: 2px; }

/* ============ Typography ============ */
h1, h2, h3 {
  font-family: var(--display);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  color: var(--pine);
}
h1 { font-size: clamp(2.6rem, 6.5vw, 4.4rem); }
h2 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); margin-bottom: 0.5em; }
h3 { font-size: 1.25rem; letter-spacing: 0.04em; }

.eyebrow {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--olive);
  margin-bottom: 14px;
}

.accent { color: var(--signal); }

.section-lead { max-width: 62ch; color: #3c4435; margin-bottom: 2rem; }

/* ============ Header ============ */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--pine);
  border-bottom: 3px solid var(--signal);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 60px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none;
}
.brand-text {
  font-family: var(--display);
  font-weight: 700; font-size: 1.3rem;
  text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--paper);
}
.brand-text em { font-style: normal; color: var(--khaki); font-weight: 500; }

/* rank-chevron mark */
.brand-chevron {
  width: 22px; height: 16px; flex: none;
  background:
    linear-gradient(135deg, transparent 46%, var(--signal) 46% 60%, transparent 60%) left/50% 100% no-repeat,
    linear-gradient(225deg, transparent 46%, var(--signal) 46% 60%, transparent 60%) right/50% 100% no-repeat;
}

.nav-list {
  display: flex; align-items: center; gap: 26px; list-style: none;
}
.nav-list a {
  font-family: var(--display); font-weight: 600;
  font-size: 1rem; letter-spacing: 0.07em; text-transform: uppercase;
  color: var(--khaki); text-decoration: none;
}
.nav-list a:hover, .nav-list a.is-active { color: #fff; box-shadow: 0 3px 0 var(--signal); }
.nav-cta {
  background: var(--signal); color: #fff !important;
  padding: 7px 16px; border-radius: var(--radius);
  box-shadow: none !important;
}
.nav-cta:hover { background: var(--signal-dk); }

.nav-toggle { display: none; }

/* ============ Hero ============ */
.hero {
  background:
    repeating-linear-gradient(-45deg, rgba(255,255,255,0.025) 0 14px, transparent 14px 28px),
    linear-gradient(170deg, var(--pine) 0%, var(--ink) 90%);
  color: var(--paper);
  padding: 84px 0 92px;
}
.hero h1 { color: #fff; max-width: 17ch; }
.hero .eyebrow { color: var(--khaki); }
.hero-lead {
  max-width: 58ch; margin: 22px 0 32px;
  font-size: 1.15rem; color: #d9d8cc;
}
.hero-lead a { color: #ffb38c; }
.hero-lead a:hover { color: #fff; }

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  font-family: var(--display); font-weight: 700;
  font-size: 1.1rem; letter-spacing: 0.06em; text-transform: uppercase;
  padding: 13px 28px; border-radius: var(--radius);
  text-decoration: none; transition: transform 0.12s ease, background 0.15s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--signal); color: #fff; }
.btn-primary:hover { background: var(--signal-dk); color: #fff; }
.btn-ghost { color: var(--khaki); border: 2px solid var(--olive); }
.btn-ghost:hover { color: #fff; border-color: var(--khaki); }

/* ============ Sections ============ */
.section { padding: 76px 0; }
.track-section { background: var(--paper); }
.stations-section { background: var(--field); }
.howto-section { background: var(--paper); }
.awards-section { background: var(--field); }
.faq-section { background: var(--paper); }

.sub-question { margin: 2.2rem 0 0.6rem; }

/* ============ Signature: scoring track ============ */
.score-track { margin: 3.4rem 0 2.6rem; }
.track-lane {
  position: relative;
  height: 34px;
  background: var(--khaki);
  border-radius: 17px;
  border: 2px solid var(--olive);
  margin-bottom: 64px;
}
.track-fill {
  position: absolute; inset: 4px;
  width: 0;
  max-width: calc(100% - 8px);
  border-radius: 13px;
  background: linear-gradient(90deg,
    #97a06f 0%,
    #97a06f 50%,
    var(--signal) 51%,
    var(--signal) 60%,
    var(--silver) 61%,
    var(--silver) 74%,
    var(--gold) 75%,
    var(--gold) 100%);
  background-size: var(--lane-width, 1000px) 100%;
  transition: width 1.4s cubic-bezier(0.22, 1, 0.36, 1);
}
.track-fill.is-filled { width: calc(100% - 8px); }

.track-marker {
  position: absolute; top: -8px; bottom: -8px;
  left: var(--pos);
}
.marker-pin {
  display: block; width: 3px; height: 100%;
  background: var(--ink); margin-left: -1.5px;
}
.marker-label {
  position: absolute; top: calc(100% + 8px); left: 50%;
  transform: translateX(-50%);
  font-family: var(--mono); font-size: 0.74rem;
  letter-spacing: 0.04em; text-transform: uppercase;
  white-space: nowrap; color: var(--pine);
}
.marker-label strong { display: block; font-size: 1.05rem; color: var(--ink); }
.marker-silver .marker-label strong { color: #5d6673; }
.marker-gold .marker-label strong { color: var(--gold); }

.score-track figcaption {
  font-size: 0.92rem; color: #5a604f; max-width: 60ch;
}

.threshold-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px; margin-top: 1.6rem;
}
.threshold-card {
  background: var(--field);
  border-left: 5px solid var(--olive);
  border-radius: var(--radius);
  padding: 20px 18px;
}
.threshold-card h3 { margin-bottom: 6px; }
.threshold-card p { font-size: 0.96rem; color: #3c4435; }
.card-silver { border-left-color: var(--silver); }
.card-gold { border-left-color: var(--gold); }

/* ============ Table ============ */
.data-table {
  width: 100%; border-collapse: collapse;
  background: var(--paper);
  border: 2px solid var(--pine);
  font-size: 1rem;
}
.data-table caption { text-align: left; }
.data-table th, .data-table td {
  padding: 14px 16px; text-align: left;
  border-bottom: 1px solid var(--khaki);
}
.data-table thead th {
  font-family: var(--display); font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.06em;
  background: var(--pine); color: var(--paper);
  border-bottom: 3px solid var(--signal);
}
.data-table tbody th { font-weight: 600; }
.data-table tfoot th, .data-table tfoot td {
  font-weight: 700; background: var(--khaki); border-bottom: 0;
}
.data-table .num {
  font-family: var(--mono); font-size: 1.15rem; text-align: right;
}

/* ============ Steps ============ */
.steps {
  list-style: none; counter-reset: step;
  display: grid; gap: 18px; margin: 2rem 0;
}
.steps li {
  counter-increment: step;
  background: var(--field);
  border-radius: var(--radius);
  padding: 22px 22px 22px 76px;
  position: relative;
}
.steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute; left: 20px; top: 22px;
  font-family: var(--mono); font-size: 1.3rem; font-weight: 500;
  color: var(--signal);
}
.steps h3 { margin-bottom: 4px; }
.steps p { font-size: 0.98rem; color: #3c4435; }

.cta-band {
  margin-top: 2.4rem;
  background: var(--pine);
  border-radius: var(--radius);
  padding: 28px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 22px; flex-wrap: wrap;
}
.cta-band p { color: var(--khaki); max-width: 48ch; font-size: 1.05rem; }

/* ============ Awards ============ */
.awards-list { display: grid; gap: 0; border-top: 2px solid var(--pine); }
.award-row {
  display: grid; grid-template-columns: 220px 1fr; gap: 18px;
  padding: 18px 4px; border-bottom: 1px solid var(--khaki);
  align-items: baseline;
}
.award-row dt {
  font-family: var(--display); font-weight: 700; font-size: 1.2rem;
  text-transform: uppercase; letter-spacing: 0.05em; color: var(--pine);
}
.row-silver dt { color: #5d6673; }
.row-gold dt { color: var(--gold); }
.award-row dd { color: #3c4435; }

.note { margin-top: 1.6rem; font-size: 0.96rem; color: #5a604f; max-width: 64ch; }

/* ============ FAQ ============ */
.faq-list { display: grid; gap: 10px; max-width: 760px; }
.faq-item {
  background: var(--field);
  border: 1px solid var(--khaki);
  border-radius: var(--radius);
}
.faq-item summary {
  cursor: pointer; list-style: none;
  font-family: var(--display); font-weight: 600; font-size: 1.12rem;
  letter-spacing: 0.02em;
  padding: 16px 48px 16px 18px;
  position: relative; color: var(--pine);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  position: absolute; right: 18px; top: 50%;
  transform: translateY(-50%);
  font-family: var(--mono); font-size: 1.2rem; color: var(--signal);
}
.faq-item[open] summary::after { content: "–"; }
.faq-item p { padding: 0 18px 18px; color: #3c4435; font-size: 0.99rem; }

/* ============ Footer ============ */
.site-footer {
  background: var(--ink); color: #c9c8ba;
  padding: 56px 0 40px;
  border-top: 4px solid var(--signal);
}
.footer-inner { display: grid; gap: 32px; grid-template-columns: 1.4fr 1fr; }
.footer-brand { display: flex; gap: 14px; align-items: flex-start; }
.footer-brand .brand-chevron { margin-top: 5px; }
.footer-brand strong { color: var(--paper); }
.footer-heading {
  font-family: var(--display); font-size: 0.95rem;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--khaki); margin-bottom: 12px;
}
.footer-links ul { list-style: none; display: grid; gap: 8px; }
.footer-links a { color: #c9c8ba; }
.footer-links a:hover { color: #fff; }
.footer-fine {
  grid-column: 1 / -1;
  font-size: 0.85rem; color: #7d8272;
  border-top: 1px solid #34402f; padding-top: 20px;
}

/* ============ Responsive ============ */
@media (max-width: 820px) {
  .nav-toggle {
    display: grid; gap: 5px;
    background: none; border: 0; cursor: pointer; padding: 10px;
  }
  .nav-toggle-bar { width: 24px; height: 3px; background: var(--khaki); border-radius: 2px; }

  .nav-list {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--pine);
    border-bottom: 3px solid var(--signal);
    display: none; padding: 10px 0;
  }
  .nav-list.is-open { display: flex; }
  .nav-list a { display: block; padding: 13px 24px; box-shadow: none !important; }
  .nav-cta { margin: 10px 24px 6px; text-align: center; }

  .award-row { grid-template-columns: 1fr; gap: 4px; }
  .marker-label { font-size: 0.62rem; }
  .marker-label strong { font-size: 0.85rem; }
  .track-lane { margin-bottom: 58px; }
  .cta-band { flex-direction: column; align-items: flex-start; }
  .footer-inner { grid-template-columns: 1fr; }
}