/* ════════════════════════════════════════════════
   GRAMMAR GUIDE STYLES — Elite Language Solutions
   ════════════════════════════════════════════════ */

.grammar-article {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.grammar-article h2 {
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  margin-top: 3rem;
  margin-bottom: .6rem;
  scroll-margin-top: 100px;
}

.grammar-article h3 {
  font-size: clamp(1.1rem, 2.2vw, 1.35rem);
  margin-top: 1.8rem;
  margin-bottom: .5rem;
  color: var(--navy);
}

.grammar-article p {
  margin-bottom: 1.1rem;
  line-height: 1.75;
}

.grammar-article ul, .grammar-article ol {
  margin: 0 0 1.2rem 1.4rem;
  line-height: 1.8;
}

.grammar-article li { margin-bottom: .4rem; }

/* ── Hero / Title block ──────────────────────── */
.grammar-hero {
  background: linear-gradient(135deg, #0A1628 0%, #1A2B4A 60%, #243660 100%);
  padding: 3.5rem 0 3rem;
  position: relative;
}

.grammar-hero .container { max-width: 880px; }

.grammar-meta-bar {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
  margin: 1.2rem 0;
  font-size: .78rem;
  color: rgba(255,255,255,.6);
}

.grammar-meta-bar span { display: flex; align-items: center; gap: .3rem; }

.level-badge {
  display: inline-block;
  background: var(--gold);
  color: var(--navy-deep);
  font-weight: 700;
  font-size: .72rem;
  letter-spacing: .06em;
  padding: .25rem .7rem;
  border-radius: 3px;
  text-transform: uppercase;
}

/* ── Table of Contents ───────────────────────── */
.grammar-toc {
  background: var(--cream);
  border: 1px solid var(--cream-dark);
  border-radius: var(--radius);
  padding: 1.5rem 1.8rem;
  margin: 2rem 0;
}

.grammar-toc h2 {
  margin-top: 0;
  font-size: 1.1rem;
}

.grammar-toc ol {
  columns: 2;
  column-gap: 2rem;
  margin: 0;
  list-style: none;
  counter-reset: toc;
}

.grammar-toc li {
  break-inside: avoid;
  margin-bottom: .35rem;
}

.grammar-toc a {
  font-size: .85rem;
  color: var(--navy);
  text-decoration: none;
  border-bottom: 1px dotted transparent;
}

.grammar-toc a:hover {
  color: var(--gold-dark, #a8842f);
  border-bottom-color: currentColor;
}

@media (max-width: 700px) {
  .grammar-toc ol { columns: 1; }
}

/* ── Quick Summary Box ───────────────────────── */
.quick-summary {
  background: var(--navy);
  border-radius: var(--radius);
  padding: 1.8rem 2rem;
  color: white;
  margin: 1.5rem 0 2.5rem;
}

.quick-summary h2 {
  color: white;
  margin-top: 0;
  font-size: 1.2rem;
}

.quick-summary-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1rem;
}

.quick-summary-item {
  background: rgba(255,255,255,.06);
  border-radius: 4px;
  padding: .9rem 1.1rem;
}

.quick-summary-item .label {
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--gold);
  display: block;
  margin-bottom: .3rem;
}

.quick-summary-item .value {
  font-size: .88rem;
  color: rgba(255,255,255,.92);
  line-height: 1.5;
}

@media (max-width: 700px) { .quick-summary-grid { grid-template-columns: 1fr; } }

/* ── Callout boxes ───────────────────────────── */
.callout {
  border-radius: var(--radius);
  padding: 1.1rem 1.4rem;
  margin: 1.5rem 0;
  display: flex;
  gap: .9rem;
  align-items: flex-start;
}

.callout .icon { font-size: 1.3rem; flex-shrink: 0; line-height: 1; }
.callout .content { font-size: .9rem; line-height: 1.6; }
.callout .content strong { display: block; margin-bottom: .25rem; font-size: .85rem; text-transform: uppercase; letter-spacing: .05em; }

.callout-tip { background: #EEF7F0; border-left: 4px solid #2E7D52; }
.callout-tip .content strong { color: #2E7D52; }

.callout-warning { background: #FDF3E7; border-left: 4px solid #E07B2A; }
.callout-warning .content strong { color: #E07B2A; }

.callout-memory { background: #F3EFFB; border-left: 4px solid #8B5CF6; }
.callout-memory .content strong { color: #8B5CF6; }

.callout-exam { background: #EAF2F8; border-left: 4px solid #1A6B9A; }
.callout-exam .content strong { color: #1A6B9A; }

/* ── Grammar tables ───────────────────────────── */
.grammar-table-wrap { overflow-x: auto; margin: 1.5rem 0; border-radius: var(--radius); border: 1px solid var(--cream-dark); }

table.grammar-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .85rem;
  background: white;
}

table.grammar-table th {
  background: var(--navy);
  color: white;
  font-weight: 600;
  text-align: left;
  padding: .7rem 1rem;
  font-size: .78rem;
  letter-spacing: .02em;
}

table.grammar-table td {
  padding: .65rem 1rem;
  border-bottom: 1px solid var(--cream-dark);
  vertical-align: top;
}

table.grammar-table tr:last-child td { border-bottom: none; }
table.grammar-table tr:nth-child(even) td { background: var(--cream); }
table.grammar-table code { background: rgba(26,43,74,.06); padding: .1rem .4rem; border-radius: 3px; font-size: .82rem; }

/* ── Mistake cards ────────────────────────────── */
.mistake-card {
  background: white;
  border: 1px solid var(--cream-dark);
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
  margin-bottom: .9rem;
}

.mistake-wrong { color: #C0392B; font-size: .88rem; margin-bottom: .3rem; }
.mistake-correct { color: #2E7D52; font-size: .88rem; margin-bottom: .4rem; }
.mistake-explain { font-size: .82rem; color: var(--text-mid); margin: 0; }

/* ── Numbered use-case sections ──────────────── */
.use-case {
  border: 1px solid var(--cream-dark);
  border-radius: var(--radius);
  padding: 1.4rem 1.6rem;
  margin-bottom: 1.3rem;
  background: white;
}

.use-case-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px; height: 28px;
  background: var(--gold);
  color: var(--navy-deep);
  border-radius: 50%;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .85rem;
  margin-right: .6rem;
}

.use-case h3 { display: flex; align-items: center; margin-top: 0; }

.use-case-examples {
  list-style: none;
  margin: .8rem 0 0;
  display: flex;
  flex-direction: column;
  gap: .4rem;
}

.use-case-examples li {
  background: var(--cream);
  border-radius: 4px;
  padding: .5rem .8rem;
  font-size: .85rem;
}

.use-case-examples li::before { content: "✓  "; color: var(--gold); font-weight: 700; }

/* ── Conversation / dialogue boxes ───────────── */
.dialogue-box {
  background: var(--cream);
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
  margin-bottom: 1rem;
}

.dialogue-line { margin-bottom: .5rem; font-size: .88rem; }
.dialogue-speaker { font-weight: 700; color: var(--navy); }

/* ── Exercise blocks ──────────────────────────── */
.exercise-block {
  background: white;
  border: 1px solid var(--cream-dark);
  border-radius: var(--radius);
  padding: 1.5rem 1.7rem;
  margin: 1.5rem 0;
}

.exercise-item {
  display: flex;
  gap: .7rem;
  margin-bottom: .8rem;
  font-size: .9rem;
  align-items: baseline;
}

.exercise-num { font-weight: 700; color: var(--gold-dark, #a8842f); flex-shrink: 0; min-width: 1.6rem; }

details.answer-reveal {
  margin-top: 1rem;
  font-size: .85rem;
}

details.answer-reveal summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--navy);
  padding: .5rem 0;
}

details.answer-reveal[open] summary { color: var(--gold-dark, #a8842f); }

.answer-list {
  background: var(--cream);
  border-radius: 4px;
  padding: 1rem 1.2rem;
  margin-top: .5rem;
  line-height: 1.9;
}

/* ── Collocation / vocab chips ────────────────── */
.chip-grid {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: 1rem 0;
}

.chip {
  background: var(--cream);
  border: 1px solid var(--cream-dark);
  border-radius: 20px;
  padding: .4rem .9rem;
  font-size: .82rem;
  color: var(--navy);
}

/* ── FAQ reuse from main style but compact heading ── */
.grammar-article .faq-item { margin-bottom: .6rem; }

/* ── Sticky CTA sidebar card (used on desktop) ───── */
.grammar-cta-card {
  background: var(--navy);
  border-radius: var(--radius);
  padding: 1.6rem;
  color: white;
  text-align: center;
}

.grammar-cta-card h4 { color: white; font-size: 1rem; margin-bottom: .5rem; }
.grammar-cta-card p { color: rgba(255,255,255,.75); font-size: .82rem; margin-bottom: 1rem; }

/* ── Related grammar links grid ──────────────── */
.related-grammar-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: .9rem;
  margin: 1.5rem 0;
}

.related-grammar-card {
  display: block;
  background: white;
  border: 1px solid var(--cream-dark);
  border-top: 3px solid var(--gold);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
  text-decoration: none;
  transition: box-shadow .2s, transform .2s;
}

.related-grammar-card:hover {
  box-shadow: 0 8px 24px rgba(26,43,74,.1);
  transform: translateY(-2px);
}

.related-grammar-card strong {
  display: block;
  color: var(--navy);
  font-size: .9rem;
  margin-bottom: .25rem;
}

.related-grammar-card span {
  font-size: .78rem;
  color: var(--text-light);
}

/* ── Breadcrumb ───────────────────────────────── */
.breadcrumb-nav {
  font-size: .75rem;
  color: rgba(255,255,255,.55);
  margin-bottom: 1rem;
}
.breadcrumb-nav a { color: rgba(255,255,255,.75); text-decoration: none; }
.breadcrumb-nav a:hover { color: var(--gold); text-decoration: underline; }
.breadcrumb-nav span.sep { margin: 0 .4rem; }

/* ── Print niceties ───────────────────────────── */
@media print {
  .wa-float, .site-header, .header-phone-strip, .site-footer, #enquire { display: none !important; }
}