/* ===========================================================
   Gradewell — bold magazine redesign
   =========================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700;9..144,900&family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@500;600&display=swap');

:root {
  --black:    #0D0D0D;
  --black-2:  #141414;
  --black-3:  #1F1F1F;
  --border:   #2A2A2A;
  --red:      #E8191A;
  --red-dark: #B81314;
  --white:    #F5F4F0;
  --white-dim:#A8A8A4;

  --font-display: 'Fraunces', serif;
  --font-body:    'Inter', sans-serif;
  --font-mono:    'IBM Plex Mono', monospace;

  /* legacy band colors — remapped to red/white tints for dark theme */
  --band-early: #E8191A;
  --band-elem:  #C41415;
  --band-mid:   #9A1011;
  --band-high:  #700B0B;
  --teal:       var(--red);
  --teal-dark:  var(--red-dark);
  --paper:      var(--black);
  --paper-dim:  var(--black-2);
  --ink:        var(--white);
  --ink-soft:   var(--white-dim);
  --line:       var(--border);
  --radius:     4px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  background: var(--black);
  color: var(--white);
  font-family: var(--font-body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

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

/* ---------- layout ---------- */
.wrap {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- beta strip ---------- */
.beta-strip {
  background: var(--red);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-align: center;
  text-transform: uppercase;
  padding: 9px 16px;
}

/* ---------- topbar ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
}

.brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  text-decoration: none;
  letter-spacing: -0.02em;
  color: var(--white);
}

.brand .dot { color: var(--red); }

.topnav {
  display: flex;
  gap: 28px;
  font-size: 13px;
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.topnav a {
  text-decoration: none;
  color: var(--white-dim);
  transition: color 0.1s;
}
.topnav a:hover,
.topnav a[aria-current="page"] { color: var(--red); }

/* ---------- hero ---------- */
.hero {
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--border);
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--red);
  display: block;
  margin-bottom: 18px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(52px, 8vw, 96px);
  line-height: 0.95;
  font-weight: 900;
  margin: 0 0 28px;
  letter-spacing: -0.03em;
  color: var(--white);
}

.hero h1 em {
  font-style: italic;
  color: var(--red);
}

.hero p.lede {
  font-size: 16px;
  color: var(--white-dim);
  max-width: 52ch;
  margin: 0 0 36px;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 2px;
  font-weight: 700;
  font-size: 13px;
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
}

.btn-primary {
  background: var(--red);
  color: var(--white);
  border-color: var(--red);
}
.btn-primary:hover { background: var(--red-dark); border-color: var(--red-dark); }

.btn-ghost {
  background: transparent;
  color: var(--white);
  border-color: var(--border);
}
.btn-ghost:hover { border-color: var(--white); }

/* ---------- subject legend ---------- */
.subject-legend {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 44px;
  padding-top: 36px;
  border-top: 1px solid var(--border);
}

.subject-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--white-dim);
}

.swatch {
  width: 10px;
  height: 10px;
  border-radius: 2px;
}

/* ---------- ladder section ---------- */
.ladder-section {
  padding: 24px 0 90px;
}

.ladder-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 36px 0 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0;
  flex-wrap: wrap;
  gap: 8px;
}

.ladder-heading h2 {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 700;
  margin: 0;
  letter-spacing: -0.02em;
}

.ladder-heading .hint {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--white-dim);
}

/* band labels */
.band-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--red);
  font-weight: 600;
  padding: 20px 0 10px;
  border-top: 1px solid var(--border);
  margin: 0;
}

/* the ladder — newspaper-column rows */
.ladder { padding: 0; position: relative; }

.rung {
  border-bottom: 1px solid var(--border);
  transition: background 0.1s;
  position: relative;
}

.rung:hover { background: var(--black-2); }

.rung a.rung-link {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  align-items: center;
  gap: 20px;
  padding: 22px 0;
  text-decoration: none;
  color: var(--white);
}

/* big editorial number */
.rung-num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 42px;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--border);
  transition: color 0.1s;
  position: relative;
}

.rung:not(.is-locked):hover .rung-num { color: var(--red); }

.rung-body h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  margin: 0 0 3px;
  letter-spacing: -0.01em;
}

.rung-body .grades {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--white-dim);
}

.rung-status {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 2px;
  white-space: nowrap;
}

.status-live {
  background: var(--red);
  color: var(--white);
}

.status-soon {
  background: transparent;
  color: var(--white-dim);
  border: 1px solid var(--border);
}

/* locked rungs */
.rung.is-locked .rung-body h3 { color: var(--white-dim); }
.rung.is-locked:hover { background: transparent; }

/* open arrow indicator */
.rung:not(.is-locked)::after {
  content: "→";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  color: var(--border);
  font-size: 18px;
  transition: color 0.1s, transform 0.1s;
}
.rung:not(.is-locked):hover::after {
  color: var(--red);
  transform: translateY(-50%) translateX(3px);
}

/* ---------- about section ---------- */
#about { padding-bottom: 80px; }
#about p {
  max-width: 60ch;
  color: var(--white-dim);
  font-size: 15.5px;
  margin-top: 16px;
  line-height: 1.7;
}

/* ---------- footer ---------- */
footer {
  border-top: 1px solid var(--border);
  padding: 28px 0 40px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--white-dim);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

/* ===========================================================
   Level pages
   =========================================================== */

.level-hero {
  padding: 44px 0 8px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0;
}

.level-hero .band-tag {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--red);
  display: block;
  margin-bottom: 14px;
}

.level-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(44px, 6vw, 72px);
  font-weight: 900;
  margin: 0 0 12px;
  letter-spacing: -0.03em;
}

.level-hero p {
  color: var(--white-dim);
  font-size: 16px;
  max-width: 56ch;
  padding-bottom: 36px;
}

/* subject cards */
.subjects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin: 40px 0 80px;
}

.subject-card {
  background: var(--black-2);
  padding: 32px 28px 28px;
  position: relative;
}

.subject-card::before {
  content: "";
  display: block;
  height: 3px;
  background: var(--card-accent, var(--red));
  margin-bottom: 24px;
}

.subject-card .subject-kicker {
  font-family: var(--font-mono);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--white-dim);
  margin-bottom: 8px;
}

.subject-card h2 {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
}

.subject-card ul {
  margin: 0 0 28px;
  padding-left: 0;
  list-style: none;
  font-size: 14px;
  color: var(--white-dim);
}

.subject-card li {
  padding: 7px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}

.subject-card li::before {
  content: "—";
  color: var(--red);
  font-weight: 700;
  flex-shrink: 0;
}

.subject-card .btn {
  width: 100%;
  justify-content: center;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--white-dim);
  margin: 0 0 60px;
  transition: color 0.1s;
}
.back-link:hover { color: var(--red); }

/* ===========================================================
   Lesson pages
   =========================================================== */

.lesson-wrap { max-width: 760px; margin: 0 auto; padding: 44px 24px 100px; }

.lesson-tag {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--red);
  display: block;
  margin-bottom: 16px;
}

.lesson-wrap h1 {
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 900;
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}

.lesson-wrap p.intro {
  color: var(--white-dim);
  font-size: 16px;
  max-width: 55ch;
  border-bottom: 1px solid var(--border);
  padding-bottom: 32px;
}

.lesson-block {
  margin-top: 36px;
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: 0;
  background: var(--black-2);
  position: relative;
}

.lesson-block::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--red);
}

.lesson-block h2 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}

.lesson-block .sub {
  color: var(--white-dim);
  font-size: 14px;
  margin-bottom: 22px;
}

/* counting activity */
.count-row { display: flex; gap: 10px; flex-wrap: wrap; font-size: 40px; margin-bottom: 22px; }

.count-answers { display: flex; gap: 10px; flex-wrap: wrap; }

.answer-btn {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 16px;
  width: 52px;
  height: 52px;
  border-radius: 2px;
  border: 1.5px solid var(--border);
  background: var(--black-3);
  color: var(--white);
  cursor: pointer;
  transition: border-color 0.12s, background 0.12s;
}
.answer-btn:hover { border-color: var(--red); }
.answer-btn.correct { background: var(--red); border-color: var(--red); color: var(--white); }
.answer-btn.wrong { background: transparent; border-color: var(--white-dim); color: var(--white-dim); }

#feedback { margin-top: 16px; font-weight: 600; font-size: 14px; font-family: var(--font-mono); min-height: 22px; letter-spacing: 0.03em; }
#feedback.good { color: var(--red); }
#feedback.bad  { color: var(--white-dim); }

.next-btn {
  margin-top: 18px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--white);
  color: var(--black);
  border: none;
  border-radius: 2px;
  padding: 10px 20px;
  cursor: pointer;
  display: none;
  transition: background 0.12s;
}
.next-btn:hover { background: var(--red); color: var(--white); }

/* shapes */
.shape-grid { display: flex; gap: 18px; flex-wrap: wrap; margin-bottom: 10px; }
.shape { width: 64px; height: 64px; display: flex; align-items: center; justify-content: center; }
.shape svg { width: 100%; height: 100%; }

/* rhyme / match buttons */
.rhyme-answers { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 6px; }
.match-row { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; flex-wrap: wrap; }
.match-emoji { font-size: 28px; width: 44px; text-align: center; }
.match-btn {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.04em;
  padding: 9px 16px;
  border-radius: 2px;
  border: 1.5px solid var(--border);
  background: var(--black-3);
  color: var(--white);
  cursor: pointer;
  transition: border-color 0.12s;
}
.match-btn:hover { border-color: var(--red); }
.match-btn.correct { background: var(--red); border-color: var(--red); color: var(--white); }
.match-btn.wrong { color: var(--white-dim); border-color: transparent; }

/* letter hero */
.letter-hero {
  font-family: var(--font-display);
  font-size: 100px;
  font-weight: 900;
  margin: 0 0 8px;
  color: var(--white);
  line-height: 1;
  letter-spacing: -0.04em;
}

.word-examples { display: flex; gap: 12px; flex-wrap: wrap; font-size: 14px; }
.word-examples span {
  background: var(--black-3);
  border: 1px solid var(--border);
  padding: 7px 14px;
  border-radius: 2px;
  font-weight: 500;
  font-family: var(--font-mono);
  letter-spacing: 0.03em;
  font-size: 13px;
}

/* senses */
.senses-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; }
.sense-card {
  background: var(--black-3);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 16px 8px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--white-dim);
}
.sense-card .icon { font-size: 28px; margin-bottom: 10px; display: block; }

/* ===========================================================
   Responsive
   =========================================================== */

@media (max-width: 760px) {
  .subjects-grid { grid-template-columns: 1fr; }
  .senses-grid { grid-template-columns: repeat(3, 1fr); }
  .topnav { display: none; }
  .rung a.rung-link { grid-template-columns: 56px 1fr; }
  .rung-status { display: none; }
  .rung:not(.is-locked)::after { display: none; }
}