/* Vibe Coding Tips & Tricks — GitHub-flavoured dark theme, no dependencies. */

:root {
  --bg: #0d1117;
  --bubble: #161b22;
  --bubble-hover: #1c2129;
  --border: #30363d;
  --border-bright: #484f58;
  --code-bg: #010409;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #58a6ff;
  --accent-dim: #1f6feb;
  --success: #3fb950;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --radius: 14px;
  --column: 760px;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0 20px 80px;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* ---------- header ---------- */

.site-header {
  max-width: var(--column);
  margin: 0 auto;
  padding: 56px 0 32px;
  border-bottom: 1px solid var(--border);
}

.site-title {
  margin: 0;
  font-size: 30px;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.4px;
}

.tagline {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 15px;
}

.nav {
  display: flex;
  gap: 22px;
  margin-top: 24px;
  font-size: 14px;
}

.nav a {
  color: var(--muted);
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
}

.nav a:hover {
  color: var(--text);
  text-decoration: none;
}

.nav a[aria-current="page"] {
  color: var(--text);
  border-bottom-color: var(--accent-dim);
}

/* ---------- feed ---------- */

.feed {
  max-width: var(--column);
  margin: 0 auto;
  padding-top: 36px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.section-label {
  margin: 20px 0 -6px 4px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--muted);
}

.section-label:first-child {
  margin-top: 0;
}

.bubble {
  background: var(--bubble);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  border-bottom-left-radius: 4px;
  padding: 20px 22px;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.bubble:hover {
  border-color: var(--border-bright);
  background: var(--bubble-hover);
}

.bubble h2 {
  margin: 0 0 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.7px;
  text-transform: uppercase;
  color: var(--muted);
}

.bubble p {
  margin: 14px 0 0;
  color: var(--text);
}

.bubble p + p {
  margin-top: 10px;
}

.bubble.prose h2 {
  font-size: 20px;
  letter-spacing: -0.2px;
  text-transform: none;
  color: var(--text);
}

/* ---------- examples ---------- */

.example {
  position: relative;
}

.example pre {
  margin: 0;
  padding: 14px 16px;
  padding-right: 74px; /* keep the first line clear of the copy button */
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow-x: auto;
}

.example code {
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--text);
  white-space: pre;
}

.example.wrap code {
  white-space: pre-wrap;
  word-break: break-word;
}

p code,
li code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  padding: 1px 5px;
  background: #1f242c;
  border-radius: 5px;
}

.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  padding: 4px 10px;
  font-family: var(--font-sans);
  font-size: 11px;
  line-height: 1.6;
  color: var(--muted);
  background: var(--bubble);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.bubble:hover .copy-btn,
.copy-btn:focus-visible {
  opacity: 1;
}

.copy-btn:hover {
  color: var(--text);
  border-color: var(--border-bright);
}

.copy-btn.copied {
  color: var(--success);
  border-color: var(--success);
  opacity: 1;
}

@media (hover: none) {
  .copy-btn {
    opacity: 1;
  }
}

/* ---------- footer ---------- */

.site-footer {
  max-width: var(--column);
  margin: 56px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 13.5px;
}

.site-footer p {
  margin: 0 0 8px;
}

.site-footer ul {
  margin: 0;
  padding-left: 18px;
}

.site-footer li {
  margin-bottom: 4px;
}

/* ---------- small screens ---------- */

@media (max-width: 640px) {
  body {
    padding: 0 14px 56px;
  }

  .site-header {
    padding: 36px 0 24px;
  }

  .site-title {
    font-size: 24px;
  }

  .bubble {
    padding: 16px 16px;
  }

  .example code {
    font-size: 12.5px;
  }

  .copy-btn {
    opacity: 1;
  }
}