/* ========================================================================
   Circuit Lattice Language — Styles
   ======================================================================== */

/* Tier cards */
.tier-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.tier-card {
  background: #111;
  border: 1px solid #222;
  border-radius: 8px;
  padding: 1.5rem;
  text-decoration: none;
  color: inherit;
  transition: all 0.2s;
  position: relative;
  overflow: hidden;
}
.tier-card:hover {
  border-color: #3a7bd5;
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(58, 123, 213, 0.15);
}

.tier-level {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #3a7bd5;
  margin-bottom: 0.5rem;
}

.tier-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
  color: #555;
}

.tier-card h2 {
  font-size: 1.3rem;
  margin: 0 0 0.2rem;
  color: #fff;
}

.tier-subtitle {
  font-size: 0.8rem;
  color: #666;
  font-style: italic;
  margin-bottom: 0.75rem;
}

.tier-card p:not(.tier-subtitle) {
  font-size: 0.85rem;
  color: #aaa;
  line-height: 1.5;
}

.tier-examples {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.75rem;
}

/* Signal tags */
.signal-tag {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.signal-tag.trap       { background: #4a1a1a; color: #ff6b6b; }
.signal-tag.channel    { background: #1a3a1a; color: #6bff6b; }
.signal-tag.distribute { background: #1a1a4a; color: #6b6bff; }
.signal-tag.frustrate  { background: #4a3a1a; color: #ffbb6b; }
.signal-tag.convert    { background: #3a1a4a; color: #bb6bff; }
.signal-tag.oscillate  { background: #1a4a4a; color: #6bffff; }
.signal-tag.polarize   { background: #4a4a1a; color: #ffff6b; }
.signal-tag.layer      { background: #2a2a2a; color: #ccc; }
.signal-tag.twist      { background: #3a1a3a; color: #ff6bff; }
.signal-tag.gate       { background: #1a3a3a; color: #6bdddd; }
.signal-tag.switch     { background: #2a3a1a; color: #bbdd6b; }
.signal-tag.insulate   { background: #3a2a2a; color: #dd9966; }
.signal-tag.conduct    { background: #1a2a3a; color: #66aadd; }
.signal-tag.capacitor  { background: #3a3a1a; color: #dddd66; }
.signal-tag.filter     { background: #2a1a3a; color: #aa66dd; }
.signal-tag.memory     { background: #1a3a2a; color: #66ddaa; }
.signal-tag.focus      { background: #3a2a1a; color: #ddaa66; }

/* Information chain */
.info-chain {
  background: #111;
  border: 1px solid #222;
  border-radius: 8px;
  padding: 2rem;
  text-align: center;
  margin-bottom: 2rem;
}

.info-chain h2 {
  font-size: 1.1rem;
  color: #fff;
  margin-bottom: 1.5rem;
}

.chain-flow {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0;
  margin-bottom: 1.5rem;
}

.chain-step {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.chain-label {
  background: #1a1a2a;
  border: 1px solid #333;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  font-size: 0.85rem;
  color: #e0e0e0;
  font-weight: 600;
  white-space: nowrap;
}

.chain-arrow {
  font-size: 1.2rem;
  color: #3a7bd5;
  margin: 0 0.25rem;
}

.chain-note {
  font-size: 0.8rem;
  color: #888;
  line-height: 1.6;
  max-width: 700px;
  margin: 0 auto;
}

/* Component grid (for the components page) */
.component-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.component-card {
  background: #111;
  border: 1px solid #222;
  border-radius: 6px;
  padding: 1rem;
  transition: border-color 0.15s;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}
.component-card:hover { border-color: #3a7bd5; }
.component-card.overtone { border-left: 3px solid #ffbb6b; }

.component-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.5rem;
}

.component-name {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
}

.component-n {
  font-size: 0.75rem;
  color: #666;
  background: #1a1a1a;
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
}

.component-signal {
  margin-bottom: 0.5rem;
}

.component-desc {
  font-size: 0.8rem;
  color: #999;
  line-height: 1.4;
}

.component-stats {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.5rem;
  font-size: 0.7rem;
  color: #666;
}

/* Pair card */
.pair-card {
  background: #111;
  border: 1px solid #222;
  border-radius: 6px;
  padding: 1.25rem;
}

.pair-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin: 1rem 0;
  font-size: 0.9rem;
}

.pair-shape {
  background: #1a1a2a;
  border: 1px solid #333;
  padding: 0.4rem 0.75rem;
  border-radius: 4px;
  color: #e0e0e0;
}

.pair-connection {
  color: #3a7bd5;
  font-weight: bold;
}

/* Circuit card */
.circuit-card {
  background: #111;
  border: 1px solid #222;
  border-radius: 6px;
  padding: 1.25rem;
}

.circuit-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  margin: 1rem 0;
  font-size: 0.8rem;
}

.circuit-function {
  font-size: 0.85rem;
  color: #aaa;
  line-height: 1.5;
  margin-top: 0.75rem;
}

/* Responsive */
@media (max-width: 900px) {
  .tier-cards { grid-template-columns: 1fr; }
  .chain-flow { flex-direction: column; }
  .chain-arrow { transform: rotate(90deg); }
}