/* ==========================================================
   InTelli-Tick — Varshu Study Centre
   Palette: Oxford Navy & Claret — deep ledger-navy ink on warm
   cream paper, a wine-claret for calls to action and warnings,
   a muted forest green for institutional rules/dividers, and
   aged brass for anything to do with WINNING points.
   ========================================================== */

:root {
  --paper:        #F4EEDE;
  --paper-dim:    #E9DFC6;
  --ink:          #17233D;
  --ink-soft:     #4C5A76;
  --forest:        #2F4A3A;
  --forest-deep:   #1F332A;
  --claret:          #6E1423;
  --brass:         #A9803F;
  --line:         #C8BC9C;
  --line-soft:    #DBD0AE;

  --font-display: "Fraunces", Georgia, serif;
  --font-body:    "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:    "IBM Plex Mono", "Courier New", monospace;

  --radius: 3px;
  --max-w: 980px;
}

* { box-sizing: border-box; }

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.55;
  background-image:
    radial-gradient(circle at 1px 1px, rgba(28,43,69,0.055) 1px, transparent 0);
  background-size: 22px 22px;
}

a { color: inherit; }

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

/* ---------- Skip link / focus ---------- */
a.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 10px 16px;
  z-index: 100;
}
a.skip-link:focus { left: 12px; top: 12px; }

:focus-visible {
  outline: 3px solid var(--claret);
  outline-offset: 2px;
}

/* ---------- Top masthead ---------- */
.masthead {
  border-bottom: 3px double var(--ink);
  padding: 22px 0 16px;
}
.masthead .wrap {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px 24px;
}
.masthead__brand {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--forest);
}
.masthead__tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

/* ---------- Hero (ticket header) ---------- */
.hero {
  padding: 56px 0 44px;
  position: relative;
}
.hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--claret);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}
.hero__eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--claret);
  display: inline-block;
}
.hero h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.6rem, 6vw, 4.6rem);
  line-height: 0.98;
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}
.hero h1 em {
  font-style: italic;
  color: var(--forest);
}
.hero__sub {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  color: var(--ink-soft);
  max-width: 640px;
  margin: 8px 0 0;
}
.hero__meta {
  margin-top: 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.chip {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  border: 1px solid var(--ink);
  border-radius: 999px;
  padding: 6px 14px;
  color: var(--ink);
  background: var(--paper-dim);
}
.chip--win { border-color: var(--brass); color: var(--brass); }
.chip--warn { border-color: var(--claret); color: var(--claret); }

/* ---------- Section shell ---------- */
section { padding: 52px 0; }
.section-top {
  border-top: 1px solid var(--line);
  padding-top: 52px;
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.section-num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--forest);
  letter-spacing: 0.08em;
}
.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 600;
  margin: 4px 0 0;
}
.section-lede {
  max-width: 62ch;
  color: var(--ink-soft);
  margin: 0 0 24px;
}

/* ---------- How to play steps ---------- */
.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.steps li {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 16px;
  align-items: start;
  background: var(--paper-dim);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
}
.steps li .n {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.3rem;
  color: var(--forest);
}

/* ---------- Sample coupon (signature element) ---------- */
.coupon {
  position: relative;
  background: #FBF6EA;
  border: 1px solid var(--ink);
  border-radius: 4px;
  padding: 26px 26px 22px;
  box-shadow: 6px 6px 0 rgba(28,43,69,0.08);
  overflow: hidden;
}
.coupon::before {
  /* perforation edge along the left */
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background-image: linear-gradient(var(--line) 60%, transparent 0);
  background-size: 3px 12px;
  background-repeat: repeat-y;
}
.coupon__head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line);
}
.coupon__id {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-soft);
}
.coupon__id b { color: var(--ink); letter-spacing: 0.04em; }
.coupon__stamp {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--claret);
  border: 1.5px solid var(--claret);
  border-radius: 4px;
  padding: 4px 10px;
  transform: rotate(4deg);
}

.coupon__cols {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 4px 8px;
  margin-bottom: 8px;
}
.coupon__colhead {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-align: center;
  color: var(--forest);
  letter-spacing: 0.08em;
  padding-bottom: 6px;
  position: relative;
}
.coupon__colhead .arrow {
  display: block;
  font-size: 0.9rem;
  color: var(--claret);
  margin-top: 2px;
}

.coupon__grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
}
.coupon__cell {
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--paper);
  color: var(--ink);
}
.coupon__cell--empty {
  background: repeating-linear-gradient(
    135deg, var(--paper) 0 6px, var(--paper-dim) 6px 12px
  );
  border-style: dashed;
  color: var(--ink-soft);
  font-size: 0.65rem;
  font-family: var(--font-body);
  letter-spacing: 0.06em;
}
.coupon__row-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--ink-soft);
}
.coupon__rows {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 8px;
  align-items: center;
}
.coupon__foot {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-soft);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------- Row win ladder ---------- */
.winrow-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
}
.winrow-group h3 {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 10px;
}
.win-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  background: var(--forest);
  color: var(--paper);
  border-radius: 999px;
  padding: 9px 16px;
  margin: 0 8px 8px 0;
  font-size: 0.95rem;
}
.win-pill b {
  color: var(--brass);
  font-weight: 700;
}
.win-pill--triple { background: var(--forest-deep); }

/* ---------- Tables ---------- */
.tbl-wrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  background: var(--paper-dim);
  border: 1px solid var(--line);
}
caption {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-soft);
  margin-bottom: 8px;
  letter-spacing: 0.04em;
}
th, td {
  border-bottom: 1px solid var(--line-soft);
  padding: 10px 14px;
  text-align: left;
}
thead th {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--forest);
  background: var(--paper);
  border-bottom: 2px solid var(--ink);
}
tbody tr:last-child td { border-bottom: none; }
td.num, th.num { font-family: var(--font-mono); text-align: right; }
tr.accum-final td { font-weight: 700; color: var(--forest); }

/* ---------- Academic ladder cards ---------- */
.ladder {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}
.ladder__item {
  border: 1px solid var(--line);
  background: var(--paper-dim);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
}
.ladder__item .score {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink-soft);
}
.ladder__item .pts {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 2.1rem;
  color: var(--forest);
  margin-top: 6px;
}
.ladder__item .pts small {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--ink-soft);
  font-weight: 400;
}

/* ---------- Attempt paths ---------- */
.paths {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}
.path-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper-dim);
  padding: 18px 20px;
}
.path-card h4 {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--claret);
}
.path-card ol {
  margin: 0;
  padding-left: 18px;
}
.path-card li { margin-bottom: 8px; }

/* ---------- Receipt (attempt cost) ---------- */
.receipt {
  max-width: 380px;
  background: var(--paper-dim);
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  padding: 20px 22px;
  font-family: var(--font-mono);
}
.receipt__row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 0.9rem;
}
.receipt__row:last-child { border-bottom: none; }
.receipt__row b { color: var(--forest); }

/* ---------- Callouts ---------- */
.callout {
  border-left: 4px solid var(--claret);
  background: var(--paper-dim);
  padding: 16px 20px;
  border-radius: 0 var(--radius) var(--radius) 0;
}
.callout strong { color: var(--claret); }

.callout--brass {
  border-left-color: var(--brass);
}
.callout--brass strong { color: var(--brass); }

/* ---------- Footer ---------- */
footer {
  border-top: 3px double var(--ink);
  padding: 26px 0 40px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-soft);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .coupon__cell { font-size: 0.8rem; }
  .coupon__colhead { font-size: 0.62rem; }
  section { padding: 36px 0; }
}