:root {
  --bg: #0b0e14;
  --bg-elevated: #131826;
  --bg-card: #171d2e;
  --border: #2a3348;
  --text: #e7ecf5;
  --text-dim: #93a0b8;
  --accent: #f2b807;

  --cost-1: #7c8896;
  --cost-2: #1fae56;
  --cost-3: #2f8fdb;
  --cost-4: #d13be0;
  --cost-5: #f2b807;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
}

.topbar {
  background: linear-gradient(180deg, var(--bg-elevated), var(--bg));
  border-bottom: 1px solid var(--border);
  padding: 24px 16px 16px;
}

.topbar-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.topbar h1 {
  margin: 0;
  font-size: 1.6rem;
  letter-spacing: 0.5px;
}

.subtitle {
  margin: 4px 0 0;
  color: var(--text-dim);
  font-size: 0.9rem;
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-bottom: 20px;
  position: sticky;
  top: 0;
  background: var(--bg);
  padding: 10px 0;
  z-index: 5;
}

#search {
  flex: 1 1 220px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.95rem;
}

#search:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.cost-filters {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.cost-btn {
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-dim);
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
}

.cost-btn[data-active="true"] {
  color: #0b0e14;
  border-color: transparent;
}

.cost-btn[data-cost="1"][data-active="true"] { background: var(--cost-1); }
.cost-btn[data-cost="2"][data-active="true"] { background: var(--cost-2); }
.cost-btn[data-cost="3"][data-active="true"] { background: var(--cost-3); }
.cost-btn[data-cost="4"][data-active="true"] { background: var(--cost-4); }
.cost-btn[data-cost="5"][data-active="true"] { background: var(--cost-5); }
.cost-btn[data-cost="all"][data-active="true"] { background: var(--text); }

.champion-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 14px;
}

.champ-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.champ-head {
  display: flex;
  align-items: center;
  gap: 10px;
}

.champ-portrait {
  width: 52px;
  height: 52px;
  border-radius: 8px;
  object-fit: cover;
  border: 2px solid var(--cost-1);
  background: #000;
  flex-shrink: 0;
}

.champ-card[data-cost="1"] .champ-portrait { border-color: var(--cost-1); }
.champ-card[data-cost="2"] .champ-portrait { border-color: var(--cost-2); }
.champ-card[data-cost="3"] .champ-portrait { border-color: var(--cost-3); }
.champ-card[data-cost="4"] .champ-portrait { border-color: var(--cost-4); }
.champ-card[data-cost="5"] .champ-portrait { border-color: var(--cost-5); }

.champ-name-block {
  min-width: 0;
}

.champ-name {
  font-weight: 700;
  font-size: 1rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.champ-cost {
  font-size: 0.75rem;
  font-weight: 700;
}

.champ-card[data-cost="1"] .champ-cost { color: var(--cost-1); }
.champ-card[data-cost="2"] .champ-cost { color: var(--cost-2); }
.champ-card[data-cost="3"] .champ-cost { color: var(--cost-3); }
.champ-card[data-cost="4"] .champ-cost { color: var(--cost-4); }
.champ-card[data-cost="5"] .champ-cost { color: var(--cost-5); }

.trait-row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.trait-chip {
  font-size: 0.68rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 2px 7px;
  border-radius: 999px;
}

.item-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.item-row {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 8px;
}

.item-recipe {
  display: flex;
  align-items: center;
  gap: 3px;
  flex-shrink: 0;
}

.icon-sm {
  width: 24px;
  height: 24px;
  border-radius: 5px;
  object-fit: cover;
  background: #000;
  border: 1px solid var(--border);
}

.icon-result {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  object-fit: cover;
  background: #000;
  border: 1px solid var(--accent);
  flex-shrink: 0;
}

.op-sign {
  color: var(--text-dim);
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
}

.item-name {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.emblems-section {
  margin-top: 40px;
  border-top: 1px solid var(--border);
  padding-top: 20px;
}

.emblems-section h2 {
  font-size: 1.1rem;
  margin-bottom: 12px;
}

.emblem-groups {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.emblem-group h3 {
  font-size: 0.9rem;
  color: var(--text-dim);
  margin: 0 0 8px;
  text-transform: capitalize;
}

.non-craftable {
  margin-top: 24px;
}

.non-craftable h3 {
  font-size: 0.9rem;
  color: var(--text-dim);
  margin: 0 0 8px;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.emblem-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 10px 4px 4px;
  font-size: 0.75rem;
}

footer {
  text-align: center;
  color: var(--text-dim);
  font-size: 0.75rem;
  padding: 24px 16px 40px;
}

.empty-state {
  color: var(--text-dim);
  padding: 40px;
  text-align: center;
  grid-column: 1 / -1;
}

.toast {
  position: fixed;
  bottom: 16px;
  left: 50%;
  transform: translate(-50%, 20px);
  background: #b3261e;
  color: #fff;
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 0.85rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.toast[data-visible="true"] {
  opacity: 1;
  transform: translate(-50%, 0);
}

@media (max-width: 480px) {
  .champion-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  }
  .topbar h1 { font-size: 1.3rem; }
}