/* IELTS 25-day workspace — shared stylesheet. Every lesson links this. */

:root {
  --ink: #1a1a1a;
  --paper: #fbfaf7;
  --accent: #b0451f;
  --accent-soft: #f3e3dc;
  --ok: #2d6a4f;
  --warn: #9a6b00;
  --rule: #ded8ce;
  --muted: #6b6459;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0 1.25rem 4rem;
  background: var(--paper);
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.65;
  font-size: 17px;
}

main { max-width: 46rem; margin: 0 auto; }

header.lesson-head {
  border-bottom: 3px double var(--rule);
  padding: 2.5rem 0 1.25rem;
  margin-bottom: 2rem;
}

.eyebrow {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.5rem;
}

h1 {
  font-size: 1.9rem;
  line-height: 1.2;
  margin: 0 0 0.6rem;
  font-weight: 600;
}

.lede {
  font-size: 1.02rem;
  color: var(--muted);
  margin: 0;
  font-style: italic;
}

h2 {
  font-size: 1.22rem;
  margin: 2.4rem 0 0.7rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--rule);
  font-weight: 600;
}

h3 {
  font-size: 1.02rem;
  margin: 1.5rem 0 0.4rem;
  font-weight: 600;
  color: var(--accent);
}

p { margin: 0.7rem 0; }

a { color: var(--accent); }

strong { font-weight: 600; }

code, .num {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.88em;
  background: var(--accent-soft);
  padding: 0.1em 0.36em;
  border-radius: 3px;
}

blockquote {
  margin: 1.1rem 0;
  padding: 0.85rem 1.1rem;
  border-left: 3px solid var(--accent);
  background: #fff;
  font-style: italic;
  color: #332f2a;
}

blockquote cite {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.8rem;
  font-style: normal;
  color: var(--muted);
  font-family: ui-monospace, Menlo, monospace;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.1rem 0;
  font-size: 0.93rem;
}

th, td {
  text-align: left;
  padding: 0.55rem 0.6rem;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}

th {
  font-family: ui-monospace, Menlo, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 2px solid var(--rule);
}

.callout {
  margin: 1.4rem 0;
  padding: 1rem 1.15rem;
  border: 1px solid var(--rule);
  border-left: 4px solid var(--accent);
  background: #fff;
}

.callout.danger { border-left-color: var(--warn); }
.callout.good { border-left-color: var(--ok); }
.callout h3 { margin-top: 0; color: var(--ink); }
.callout.danger h3 { color: var(--warn); }
.callout.good h3 { color: var(--ok); }

ol.steps { padding-left: 1.3rem; }
ol.steps > li { margin: 0.65rem 0; }

ul.plain { padding-left: 1.2rem; }
ul.plain > li { margin: 0.35rem 0; }

hr { border: 0; border-top: 1px solid var(--rule); margin: 2rem 0; }

nav.lesson-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1.2rem;
  border-top: 3px double var(--rule);
  font-family: ui-monospace, Menlo, monospace;
  font-size: 0.8rem;
  flex-wrap: wrap;
}

nav.lesson-nav a { text-decoration: none; }
nav.lesson-nav .disabled { color: #b8b0a4; }

footer {
  margin-top: 2.5rem;
  font-size: 0.78rem;
  color: var(--muted);
  font-family: ui-monospace, Menlo, monospace;
}

/* Progress checkboxes for in-lesson drills */
.drill {
  margin: 1.4rem 0;
  padding: 1rem 1.15rem;
  background: #fff;
  border: 1px dashed var(--accent);
}

.drill h3 { margin-top: 0; }

.drill ol { padding-left: 1.25rem; }
.drill ol > li { margin: 0.5rem 0; }

.record {
  margin-top: 0.8rem;
  font-size: 0.88rem;
  color: var(--muted);
}