:root {
  --bg: #fff;
  --text: #333;
  --input-bg: #f5f5f5;
  --accent: #F11A19;
  --card-bg: #fafafa;
  --card-title-bg: #333;
  --card-title-text: #eee;
  --button-border: #ddd;
  --button-hover-bg: #e8e8e8;
  --button-success: #4caf50;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121212;
    --text: #e0e0e0;
    --input-bg: #1e1e1e;
    --card-bg: #1a1a1a;
    --card-title-bg: #333;
    --card-title-text: #f5f5f5;
    --button-border: #444;
    --button-hover-bg: #2a2a2a;
    --button-success: #4caf50;
  }
}

html {
  background-color: var(--bg);
  font-family: system-ui, sans-serif;
  color: var(--text);
  font-size: 16px;
}

main {
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  padding: 8px;
}

footer {
  margin-top: 2rem;
  text-align: center;
}

a {
  color: var(--text);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-underline-offset: 2px;
}

main header h1 {
  font-weight: 800;
  color: var(--accent);
}

main header h1 a {
  text-decoration: none;
  color: inherit;
}

input[type="text"], input[type="search"], textarea {
  width: 100%;
  background: var(--input-bg);
  border: none;
  border-radius: 0.75rem;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  box-sizing: border-box;
  color: var(--text);
}

/* Textarea wrapper for positioning paste button */
.textarea-wrapper {
  position: relative;
}

/* Paste button (bottom right of textarea) */
.paste-btn {
  position: absolute;
  bottom: 12px;
  right: 12px;
  width: 32px;
  height: 32px;
  border: 1px solid var(--button-border);
  background: var(--card-bg);
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.7;
  transition: opacity 0.2s, background 0.2s;
  padding: 0;
}

.paste-btn:hover {
  opacity: 1;
  background: var(--button-hover-bg);
}

.paste-btn svg {
  width: 16px;
  height: 16px;
  stroke: var(--text);
}

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  max-width: 1100px;
  margin: 1rem auto;
}

@media (min-width: 640px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 900px) {
  .card-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 1200px) {
  .card-grid { grid-template-columns: repeat(4, 1fr); }
}

.card-grid-single {
  display: grid;
  margin: 1rem auto;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}

.card-grid-single > * {
  width: 100%;
}

.card {
  box-sizing: border-box;
  word-wrap: break-word;
  background-color: var(--card-bg);
  border-radius: 0.75rem;
  padding: 0;
  overflow: hidden;
}

/* Card header for title and copy button */
.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  background-color: var(--card-title-bg);
  padding: 8px;
}

.card-header a {
  flex: 1;
  min-width: 0;
  text-decoration: none;
}

.card-title {
  font-weight: 600;
  font-family: monospace;
  color: var(--card-title-text);
  margin: 0;
}

/* Copy button (top right of card) */
.copy-btn {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border: 1px solid var(--button-border);
  background: var(--card-bg);
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.8;
  transition: opacity 0.2s, background 0.2s, border-color 0.2s;
  padding: 0;
}

.copy-btn:hover {
  opacity: 1;
  background: var(--button-hover-bg);
}

.copy-btn svg {
  width: 14px;
  height: 14px;
  stroke: var(--text);
}

.copy-btn.copied {
  background: var(--button-success);
  border-color: var(--button-success);
}

.copy-btn.copied svg {
  stroke: white;
}

.card a {
  text-decoration: none;
}

.card-value {
  padding: 8px;
  margin: 0;
  white-space: pre-wrap;
  overflow-x: auto;
  font-family: monospace;
  font-size: 14px;
  line-height: 1.4;
}

.category-title {
  font-size: 1.2em;
}

.category-title a {
  text-decoration: none;
  color: inherit;
}