:root {
  --color-bg: #f7f7f8;
  --color-surface: #ffffff;
  --color-surface-hover: #eeeef0;
  --color-border: #e1e1e5;
  --color-text: #1a1a1e;
  --color-text-dim: #6b6b74;
  --color-accent: oklch(58% 0.19 50);

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.75rem;
  --space-lg: clamp(2rem, 1.5rem + 2vw, 4rem);

  --radius: 10px;
  --duration-fast: 120ms;
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);

  color-scheme: light;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--color-border);
  flex-wrap: wrap;
}

.topbar h1 {
  margin: 0;
  font-size: clamp(1.5rem, 1.2rem + 1vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.topbar h1::before {
  content: '';
  display: inline-block;
  width: 0.5em;
  height: 0.5em;
  margin-right: 0.4em;
  border-radius: 2px;
  background: #000000;
}

.controls {
  display: flex;
  gap: var(--space-xs);
}

#search,
#sort {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  padding: 0.55rem 0.85rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
}

#search {
  min-width: 220px;
}

#search:focus,
#sort:focus {
  outline: none;
  border-color: var(--color-accent);
}

main {
  padding: var(--space-md) var(--space-lg) var(--space-lg);
}

.summary {
  color: var(--color-text-dim);
  font-size: 0.9rem;
  margin: 0 0 var(--space-md);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: var(--space-sm);
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-sm);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  box-shadow: 0 1px 2px rgba(20, 20, 24, 0.04);
  transition: border-color var(--duration-fast) var(--ease-out-expo),
    box-shadow var(--duration-fast) var(--ease-out-expo),
    transform var(--duration-fast) var(--ease-out-expo);
}

.card:hover,
.card:focus-within {
  border-color: var(--color-accent);
  box-shadow: 0 6px 16px rgba(20, 20, 24, 0.08);
  transform: translateY(-2px);
}

.card .thumb {
  height: 110px;
  border-radius: calc(var(--radius) - 4px);
  background: repeating-conic-gradient(#f0f0f2 0% 25%, #f7f7f8 0% 50%) 50% / 16px 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.card .thumb img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.card .name {
  font-size: 0.85rem;
  font-weight: 600;
  word-break: break-word;
  color: var(--color-text);
}

.card .meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--color-text-dim);
}

.card .copy-btn {
  margin-top: auto;
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-dim);
  border-radius: var(--radius);
  padding: 0.4rem 0.6rem;
  font-size: 0.75rem;
  cursor: pointer;
  transition: border-color var(--duration-fast), color var(--duration-fast);
}

.card .copy-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.empty {
  color: var(--color-text-dim);
  text-align: center;
  padding: var(--space-lg) 0;
}

.toast {
  position: fixed;
  bottom: var(--space-md);
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: #ffffff;
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0.6rem 1.1rem;
  border-radius: 999px;
  box-shadow: 0 8px 24px rgba(20, 20, 24, 0.18);
}

.toast[hidden] {
  display: none;
}