/* Project-specific styles only. Site-wide tokens/classes live in /assets/site/theme.css. */

.element-page {
  display: grid;
  gap: 24px;
}

.finder-band {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: 24px;
  align-items: end;
  padding: 46px 0 28px;
  border-bottom: 1px solid var(--site-border);
}

.finder-head {
  display: grid;
  gap: 14px;
}

.finder-head .site-title {
  max-width: 12ch;
}

.search-panel,
.result-panel,
.browser-panel {
  border: 1px solid var(--site-border);
  border-radius: var(--site-radius);
  background: var(--site-surface);
}

.search-panel {
  display: grid;
  gap: 10px;
  padding: 14px;
}

.search-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
}

.element-input {
  width: 100%;
  min-height: 48px;
  padding: 10px 12px;
  border: 1px solid var(--site-border-strong);
  border-radius: var(--site-radius-sm);
  background: var(--site-bg);
  color: var(--site-text);
  outline: none;
}

.element-input:focus {
  border-color: var(--site-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--site-accent) 18%, transparent);
}

.search-button {
  min-height: 48px;
}

.search-status {
  min-height: 1.5em;
  margin: 0;
  color: var(--site-muted);
  font-size: 0.9rem;
}

.tool-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 18px;
  align-items: start;
}

.result-panel {
  min-height: 520px;
  overflow: hidden;
}

.result-panel--empty {
  display: grid;
  place-items: center;
  padding: 28px;
  background:
    linear-gradient(135deg, color-mix(in srgb, #39a76d 12%, transparent), transparent 46%),
    linear-gradient(315deg, color-mix(in srgb, #d99524 14%, transparent), transparent 48%),
    var(--site-surface);
}

.empty-state {
  max-width: 420px;
  text-align: center;
}

.empty-kicker,
.element-type,
.fact-label,
.shell-label {
  margin: 0;
  color: var(--site-subtle);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.empty-state h2,
.element-copy h2,
.browser-heading h2 {
  margin: 0;
  letter-spacing: 0;
}

.empty-state p:last-child {
  margin-bottom: 0;
  color: var(--site-muted);
}

.element-result {
  display: grid;
  gap: 20px;
  padding: 22px;
}

.element-hero {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 18px;
  align-items: center;
}

.atomic-badge {
  width: 132px;
  aspect-ratio: 1;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 4px;
  padding: 12px;
  border: 2px solid var(--accent-color, var(--site-accent));
  border-radius: var(--site-radius);
  background: color-mix(in srgb, var(--accent-color, var(--site-accent)) 12%, var(--site-surface));
  color: var(--site-text);
}

.atomic-number {
  font-size: 0.95rem;
  font-weight: 800;
}

.atomic-symbol {
  align-self: center;
  justify-self: center;
  font-size: 3.2rem;
  line-height: 1;
  font-weight: 800;
}

.atomic-mass {
  color: var(--site-muted);
  font-size: 0.82rem;
}

.element-copy {
  min-width: 0;
}

.element-copy h2 {
  margin-top: 3px;
  font-size: 2.15rem;
  line-height: 1.08;
  overflow-wrap: anywhere;
}

.element-subtitle {
  margin: 8px 0 0;
  color: var(--site-muted);
}

.fact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.fact-card {
  min-height: 108px;
  display: grid;
  align-content: space-between;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--site-border);
  border-radius: var(--site-radius-sm);
  background: var(--site-bg-soft);
}

.fact-value {
  font-size: 1.45rem;
  line-height: 1.1;
  font-weight: 800;
  overflow-wrap: anywhere;
}

.fact-card--mass {
  grid-column: 1 / -1;
}

.fact-card--mass .fact-value {
  font-variant-numeric: tabular-nums;
  overflow-wrap: normal;
  white-space: nowrap;
}

.shell-panel {
  display: grid;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--site-border);
  border-radius: var(--site-radius);
  background: var(--site-surface-strong);
}

.shell-summary {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.shell-total {
  margin: 0;
  color: var(--site-muted);
}

.shell-bars {
  display: grid;
  gap: 8px;
}

.shell-row {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) 44px;
  gap: 10px;
  align-items: center;
}

.shell-track {
  height: 10px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--site-border);
}

.shell-fill {
  height: 100%;
  border-radius: inherit;
  background: var(--accent-color, var(--site-accent));
}

.shell-count {
  color: var(--site-muted);
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.science-note {
  margin: 0;
  padding: 10px 12px;
  border-left: 3px solid var(--accent-color, var(--site-accent));
  background: color-mix(in srgb, var(--accent-color, var(--site-accent)) 9%, transparent);
  color: var(--site-muted);
}

.equation-panel {
  display: grid;
  gap: 10px;
  padding: 14px;
  border: 1px solid var(--site-border);
  border-radius: var(--site-radius);
  background: var(--site-bg);
}

.equation-lines {
  display: grid;
  gap: 8px;
}

.equation-lines code {
  display: block;
  padding: 9px 10px;
  overflow-x: auto;
  border: 1px solid var(--site-border);
  border-radius: var(--site-radius-sm);
  background: var(--site-surface);
  color: var(--site-text);
  white-space: nowrap;
}

.equation-help {
  margin: 0;
  color: var(--site-muted);
}

.browser-panel {
  display: grid;
  gap: 12px;
  padding: 14px;
}

.browser-heading {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
}

.browser-heading span {
  color: var(--site-subtle);
  font-size: 0.86rem;
}

.element-grid {
  max-height: 620px;
  overflow: auto;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(76px, 1fr));
  gap: 8px;
  padding-right: 2px;
}

.element-tile {
  min-height: 82px;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 2px;
  padding: 8px;
  border: 1px solid var(--site-border);
  border-radius: var(--site-radius-sm);
  background: var(--site-bg);
  color: var(--site-text);
  text-align: left;
  cursor: pointer;
}

.element-tile:hover,
.element-tile:focus-visible,
.element-tile.is-active {
  border-color: var(--accent-color, var(--site-accent));
  background: color-mix(in srgb, var(--accent-color, var(--site-accent)) 12%, var(--site-surface));
  outline: none;
}

.tile-number {
  color: var(--site-subtle);
  font-size: 0.76rem;
  font-weight: 700;
}

.tile-symbol {
  align-self: center;
  font-size: 1.5rem;
  line-height: 1;
  font-weight: 800;
}

.tile-name {
  overflow: hidden;
  color: var(--site-muted);
  font-size: 0.72rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.category-nonmetal { --accent-color: #39a76d; }
.category-noble { --accent-color: #2374ab; }
.category-alkali { --accent-color: #c55a11; }
.category-alkaline { --accent-color: #bf8a1d; }
.category-metalloid { --accent-color: #8d7a1f; }
.category-halogen { --accent-color: #7a63b7; }
.category-metal { --accent-color: #536878; }
.category-lanthanide { --accent-color: #b84a62; }
.category-actinide { --accent-color: #9b5c8f; }
.category-unknown { --accent-color: #737d8a; }

@media (max-width: 900px) {
  .finder-band,
  .tool-layout {
    grid-template-columns: 1fr;
  }

  .result-panel {
    min-height: auto;
  }
}

@media (max-width: 680px) {
  .finder-band {
    padding-top: 28px;
  }

  .search-row,
  .element-hero,
  .fact-grid {
    grid-template-columns: 1fr;
  }

  .atomic-badge {
    width: 118px;
  }

  .fact-card {
    min-height: 92px;
  }
}