/* ── WRITEUP PAGES ── */
* { box-sizing: border-box; }

.writeup {
  padding: 130px 0 80px;
  background: var(--light);
  min-height: 100vh;
}
.writeup-container {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 40px;
}
.writeup-back {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  margin-bottom: 36px;
  transition: color 0.2s;
}
.writeup-back:hover { color: var(--gold); }

.writeup-header {
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}
.writeup-meta-top {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}
.writeup-cat {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
}
.writeup-title {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(36px, 5vw, 52px);
  font-weight: 300;
  line-height: 1.1;
  color: var(--navy);
  margin: 0 0 14px 0;
}
.writeup-source {
  font-size: 14px;
  color: var(--muted);
  margin: 0 0 6px 0;
}
.writeup-source a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(184,151,90,0.3);
}
.writeup-source a:hover { border-color: var(--gold); }
.writeup-date {
  font-size: 12px;
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  color: var(--muted);
  margin: 0;
}

/* Kill ALL default margins inside writeup sections */
.writeup-section {
  margin: 0 0 24px 0;
  padding: 0;
}
.writeup-section h2 {
  font-family: 'Cormorant Garamond', serif;
  font-size: 26px;
  font-weight: 600;
  color: var(--navy);
  margin: 0 0 12px 0;
  padding: 0 0 8px 0;
  border-bottom: 1px solid var(--border);
}
.writeup-section p {
  font-size: 15.5px;
  color: #3a4a5a;
  font-weight: 300;
  line-height: 1.85;
  margin: 0 0 12px 0;
  padding: 0;
}
.writeup-section figure {
  margin: 12px 0;
  padding: 0;
  text-align: center;
}
.writeup-section figure img {
  max-width: 100%;
  height: auto;
  display: inline-block;
  border: 1px solid var(--border);
  border-radius: 2px;
}
.writeup-section figure figcaption {
  font-size: 12px;
  color: var(--muted);
  text-align: center;
  margin-top: 6px;
  font-style: italic;
}

.writeup-quote {
  background: #fff;
  border-left: 3px solid var(--gold);
  padding: 14px 20px;
  font-style: italic;
  color: #4a5a6a;
  font-size: 15px;
  line-height: 1.7;
  font-weight: 300;
  margin: 0 0 12px 0;
}
.writeup-code {
  background: #0d1b2a;
  color: #e4e4e4;
  padding: 14px 18px;
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  font-size: 13px;
  line-height: 1.7;
  overflow-x: auto;
  margin: 0 0 12px 0;
  border-left: 3px solid var(--gold);
  border-radius: 2px;
}
.writeup-code code {
  font-family: inherit;
  white-space: pre;
}

.writeup-list {
  padding: 0;
  margin: 0 0 12px 0;
  list-style: none;
}
.writeup-list li {
  font-size: 15px;
  color: #3a4a5a;
  font-weight: 300;
  line-height: 1.85;
  padding: 4px 0 4px 22px;
  margin: 0;
  position: relative;
}
.writeup-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--gold);
  font-weight: 400;
}

.writeup-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
}
.writeup-footer-nav {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

@media (max-width: 700px) {
  .writeup { padding: 110px 0 60px; }
  .writeup-container { padding: 0 24px; }
}

/* ── WRITEUPS INDEX ── */
.wi-controls {
  margin-bottom: 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.wi-search-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.wi-search-icon {
  position: absolute;
  left: 14px;
  color: var(--muted);
  pointer-events: none;
}
.wi-search {
  width: 100%;
  padding: 11px 16px 11px 40px;
  border: 1px solid var(--border);
  background: #fff;
  font-family: 'DM Sans', sans-serif;
  font-size: 14px;
  color: var(--text);
  outline: none;
  transition: border-color 0.2s;
}
.wi-search:focus { border-color: var(--gold); }
.wi-search::placeholder { color: var(--muted); }

.wi-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}
.wi-filter-sep {
  width: 1px;
  height: 20px;
  background: var(--border);
  flex-shrink: 0;
  margin: 0 6px;
}
.wi-filter-group { display: flex; align-items: center; gap: 4px; }
.wi-filter-label { display: none; }
.wi-filter-btns { display: flex; gap: 4px; }
.wi-btn {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--slate);
  border: 1px solid var(--border);
  background: #fff;
  padding: 5px 12px;
  cursor: pointer;
  transition: all 0.18s;
}
.wi-btn:hover { border-color: var(--navy); color: var(--navy); }
.wi-btn.wi-active { background: var(--navy); color: #fff; border-color: var(--navy); }
.wi-btn.wi-active-easy   { background: #15803d; border-color: #15803d; color: #fff; }
.wi-btn.wi-active-medium { background: var(--gold); border-color: var(--gold); color: var(--navy); }
.wi-btn.wi-active-hard   { background: #b91c1c; border-color: #b91c1c; color: #fff; }

.wi-count {
  font-size: 12px;
  color: var(--muted);
  font-weight: 400;
  min-height: 18px;
  margin-bottom: 4px;
}
.wi-none {
  display: none;
  padding: 48px 0;
  text-align: center;
  font-size: 14px;
  color: var(--muted);
  border: 1px dashed var(--border);
  background: #fff;
}

/* Dashboard */
.wi-dashboard {
  background: var(--cream);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 24px 28px 20px;
  margin-bottom: 28px;
}
.wi-dashboard-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 20px;
}
.wi-dashboard-title {
  font-family: 'Cormorant Garamond', serif;
  font-size: 26px;
  font-weight: 400;
  color: var(--navy);
  letter-spacing: 0.01em;
}
.wi-stats-row {
  display: flex;
  gap: 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}
.wi-stat {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  padding: 16px 12px;
  border-right: 1px solid var(--border);
}
.wi-stat:last-child { border-right: none; }
.wi-stat-num {
  font-family: 'DM Sans', sans-serif;
  font-size: 32px;
  font-weight: 500;
  color: var(--gold);
  line-height: 1;
}
.wi-stat-label {
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.wi-diff-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
}
.wi-diff-pill {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 14px;
  border-radius: 4px;
  font-size: 13px;
  font-weight: 400;
}
.wi-diff-pill-label { font-weight: 400; }
.wi-diff-pill-count { font-weight: 600; font-size: 15px; }
.wi-diff-easy   { background: rgba(74,222,128,0.12);  color: #15803d; border: 1px solid rgba(74,222,128,0.35); }
.wi-diff-medium { background: rgba(245,166,35,0.15);  color: #7a3d00; border: 1px solid rgba(245,166,35,0.45); }
.wi-diff-hard   { background: rgba(220,38,38,0.10);   color: #b91c1c; border: 1px solid rgba(220,38,38,0.30); }

@media (max-width: 600px) {
  .wi-stats-row { flex-wrap: wrap; }
  .wi-stat { flex: 1 1 45%; border-right: none; border-bottom: 1px solid var(--border); }
  .wi-diff-row { grid-template-columns: 1fr; }
}