:root {
  --paper: #EDEAE3;
  --paper-card: #FBFAF7;
  --ink: #1B1B1B;
  --ink-soft: #55524B;
  --line: #D8D3C7;
  --teal: #2F6F6B;
  --teal-deep: #1F4B48;
  --amber: #C9A227;
  --coral: #E0674A;

  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 28px 28px;
  color: var(--ink);
  font-family: var(--font-display);
  -webkit-font-smoothing: antialiased;
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

/* ---------- header ---------- */
.wall-header {
  padding: 3rem 1.5rem 2rem;
  text-align: center;
}
.wall-header__inner { max-width: 720px; margin: 0 auto; }
.wall-title {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 0.6rem;
}
.wall-tagline {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--ink-soft);
  margin: 0;
  line-height: 1.5;
}

/* ---------- category tabs ---------- */
.tab-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: center;
  padding: 0 1.5rem 2rem;
  max-width: 980px;
  margin: 0 auto;
}
.tab {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  padding: 0.5rem 1rem;
  background: var(--paper-card);
  border: 1px solid var(--line);
  border-radius: 3px;
  cursor: pointer;
  color: var(--ink-soft);
  transition: transform 0.12s ease, background 0.15s ease, color 0.15s ease;
  transform: rotate(var(--r, 0deg));
}
.tab:hover { transform: rotate(0deg) translateY(-2px); }
.tab.active {
  background: var(--teal);
  border-color: var(--teal-deep);
  color: #fff;
  transform: rotate(0deg);
}
.tab.active.cat-myth_busting { background: var(--amber); border-color: #8f7418; color: var(--ink); }
.tab.active.cat-fun_memes { background: var(--coral); border-color: #a8442d; color: #fff; }

/* ---------- board / form ---------- */
.board {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 1.5rem 4rem;
}

.post-form-wrap { margin-bottom: 2.5rem; }

.pin-toggle {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  background: var(--ink);
  color: var(--paper-card);
  border: none;
  border-radius: 3px;
  padding: 0.8rem 1.3rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.pin-toggle:hover { background: var(--teal-deep); }
.pin-toggle__icon { font-size: 1.1rem; }

.post-form {
  margin-top: 1rem;
  background: var(--paper-card);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1.5rem;
  box-shadow: 0 2px 0 var(--line);
}
.field { margin-bottom: 1rem; }
.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  margin-bottom: 0.4rem;
}
.field input, .field textarea, .field select {
  width: 100%;
  font-family: var(--font-display);
  font-size: 1rem;
  padding: 0.6rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: #fff;
  color: var(--ink);
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: 2px solid var(--teal);
  outline-offset: 1px;
}
.form-actions { display: flex; align-items: center; gap: 1rem; }
.pin-submit {
  font-family: var(--font-display);
  font-weight: 600;
  background: var(--teal);
  color: #fff;
  border: none;
  border-radius: 3px;
  padding: 0.7rem 1.4rem;
  cursor: pointer;
}
.pin-submit:hover { background: var(--teal-deep); }
.pin-submit:disabled { opacity: 0.6; cursor: wait; }
.form-status {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink-soft);
}
.form-status.error { color: var(--coral); }
.form-status.ok { color: var(--teal-deep); }

/* ---------- feed grid ---------- */
.feed {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.4rem;
}
.feed-empty {
  font-family: var(--font-mono);
  color: var(--ink-soft);
  grid-column: 1 / -1;
  text-align: center;
  padding: 2rem 0;
}

.card {
  background: var(--paper-card);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 1.1rem;
  position: relative;
  transform: rotate(var(--tilt, 0deg));
  box-shadow: 0 3px 6px rgba(27,27,27,0.06), 0 1px 0 var(--line);
  transition: transform 0.15s ease;
}
.card:hover { transform: rotate(0deg) translateY(-2px); }
.card::before {
  content: "";
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%) rotate(-6deg);
  width: 26px;
  height: 14px;
  background: rgba(224,103,74,0.55);
  border-radius: 1px;
}

.card-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--teal-deep);
  border: 1px solid var(--teal);
  border-radius: 2px;
  padding: 0.15rem 0.5rem;
  margin-bottom: 0.7rem;
}

.card-desc {
  font-size: 0.95rem;
  line-height: 1.45;
  margin: 0 0 0.8rem;
}

.card-preview { margin-bottom: 0.8rem; }
.card-preview img {
  width: 100%;
  border-radius: 3px;
  display: block;
}
.card-preview .oembed-wrap {
  max-width: 100%;
  overflow: hidden;
}
.card-preview .oembed-wrap iframe,
.card-preview .oembed-wrap blockquote {
  max-width: 100% !important;
}

.card-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--teal-deep);
  word-break: break-all;
  text-decoration: none;
  border-bottom: 1px dashed var(--teal);
}
.card-link:hover { color: var(--coral); border-color: var(--coral); }

.card-meta {
  margin-top: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-soft);
}

/* ---------- footer ---------- */
.wall-footer {
  text-align: center;
  padding: 2rem 1.5rem 3rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-soft);
}