/* ============================================================
   PROMPTS_ — design system
   Midnight #101820 · Lemon #FEE715 · mobile first
   ============================================================ */

@font-face {
  font-family: 'Space Grotesk';
  src: url('/fonts/SpaceGrotesk.woff2') format('woff2');
  font-weight: 300 700;
  font-display: swap;
}
@font-face {
  font-family: 'JetBrains Mono';
  src: url('/fonts/JetBrainsMono.woff2') format('woff2');
  font-weight: 100 800;
  font-display: swap;
}

:root {
  --bg: #101820;
  --bg-raised: #16202b;
  --bg-card: #1b2735;
  --accent: #FEE715;
  --accent-soft: rgba(254, 231, 21, 0.10);
  --accent-glow: rgba(254, 231, 21, 0.30);
  --text: #f4f6f8;
  --text-dim: rgba(244, 246, 248, 0.60);
  --text-mute: rgba(244, 246, 248, 0.35);
  --border: rgba(255, 255, 255, 0.07);
  --radius: 0.9rem;
  --font-display: 'Space Grotesk', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', monospace;
  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-display);
  font-size: 16px;
  line-height: 1.6;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--accent); color: var(--bg); }

/* --- ambient background --------------------------------------- */
.bg-glow {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(ellipse 70% 45% at 85% -10%, rgba(254, 231, 21, 0.07), transparent 60%),
    radial-gradient(ellipse 60% 40% at 10% 110%, rgba(254, 231, 21, 0.045), transparent 60%),
    var(--bg);
}
.noise {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* --- layout ----------------------------------------------------- */
.wrap {
  width: 100%;
  max-width: 1024px;
  margin-inline: auto;
  padding-inline: clamp(0.75rem, 3vw, 1.5rem);
  flex: 1;
}

/* --- header ----------------------------------------------------- */
.site-header {
  padding: 1.75rem 0 1.25rem;
  text-align: center;
}
.wordmark {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.5rem, 5vw, 2rem);
  letter-spacing: 0.06em;
  color: var(--text);
  display: inline-block;
}
.wordmark .cursor {
  color: var(--accent);
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
.site-tagline {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-top: 0.35rem;
}
.site-tagline .slash { color: var(--accent); }

/* --- home grid --------------------------------------------------- */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 2.5rem;
}
@media (min-width: 768px) {
  .grid { grid-template-columns: repeat(4, 1fr); gap: 4px; }
}
.tile {
  position: relative;
  aspect-ratio: 1 / 1;
  display: block;
  background: var(--bg-raised);
  overflow: hidden;
}
.tile img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease);
}
.tile:hover img, .tile:focus-visible img { transform: scale(1.05); }
.tile:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; z-index: 1; }
.tile-overlay {
  position: absolute;
  inset: auto 0 0 0;
  padding: 1.4rem 0.5rem 0.4rem;
  background: linear-gradient(to top, rgba(16, 24, 32, 0.88), rgba(16, 24, 32, 0.4) 60%, transparent);
  pointer-events: none;
}
.tile-title {
  font-family: var(--font-mono);
  font-size: clamp(0.58rem, 2.4vw, 0.72rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.tile .ai-badge { position: absolute; top: 6px; left: 6px; }

.empty-state {
  text-align: center;
  padding: 4rem 1rem;
  font-family: var(--font-mono);
  color: var(--text-mute);
}

/* --- AI badge ----------------------------------------------------- */
.ai-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45ch;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.22rem 0.55rem;
  border-radius: 999px;
  background: rgba(16, 24, 32, 0.78);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  color: var(--text);
  white-space: nowrap;
}
.ai-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* --- post page ---------------------------------------------------- */
.back-link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  margin: 0.5rem 0 1.25rem;
  transition: color 0.25s var(--ease);
}
.back-link:hover { color: var(--accent); }

.post-head { margin-bottom: 1.5rem; }
.post-title {
  font-size: clamp(1.75rem, 6vw, 2.6rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
}
.post-meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.6rem;
  flex-wrap: wrap;
}
.post-date {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--text-mute);
  text-transform: uppercase;
}
.post-teaser { color: var(--text-dim); margin-top: 0.9rem; max-width: 60ch; }

/* --- before / after: after large, before as picture-in-picture ----- */
/* Post pages read as a narrow column, not the full 1024px grid width. */
.post-wrap { max-width: 640px; }
.pip {
  position: relative;
  /* Never taller than ~65% of the viewport: width is capped at height-budget × aspect-ratio. */
  width: min(100%, calc(65dvh * var(--ar, 0.8)));
  margin: 1.5rem auto 2rem;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(254, 231, 21, 0.35);
  box-shadow: 0 0 24px rgba(254, 231, 21, 0.08);
  background: var(--bg-raised);
}
.pip-main { width: 100%; height: auto; display: block; }
.compare-label {
  position: absolute;
  top: 8px;
  left: 8px;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  background: rgba(16, 24, 32, 0.78);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  color: var(--text-dim);
}
.compare-label.is-after {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}
.pip .ai-badge { position: absolute; bottom: 10px; left: 10px; }
.pip-thumb {
  position: absolute;
  bottom: 10px;
  right: 10px;
  width: clamp(84px, 30%, 150px);
  border-radius: calc(var(--radius) * 0.65);
  overflow: hidden;
  border: 1.5px solid rgba(255, 255, 255, 0.35);
  background: var(--bg);
  padding: 0;
  cursor: pointer;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.45);
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease);
}
.pip-thumb:hover, .pip-thumb:focus-visible { transform: scale(1.04); border-color: var(--accent); }
.pip-thumb img { width: 100%; aspect-ratio: var(--ar, 1); object-fit: cover; display: block; }
.pip-thumb-label {
  position: absolute;
  bottom: 4px;
  left: 4px;
  font-family: var(--font-mono);
  font-size: 0.5rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 0.14rem 0.42rem;
  border-radius: 999px;
  background: rgba(16, 24, 32, 0.82);
  border: 1px solid var(--border);
  color: var(--text);
}
.pip-swap-hint {
  position: absolute;
  top: 4px;
  right: 4px;
  font-size: 0.6rem;
  color: var(--text);
  background: rgba(16, 24, 32, 0.82);
  border-radius: 999px;
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* --- prompt box ----------------------------------------------------- */
.section-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 0.75rem;
}
.section-label .hash { color: var(--accent); }

.prompt-box {
  position: relative;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  margin-bottom: 1rem;
  overflow: hidden;
}
.prompt-box-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 0.9rem;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-mute);
}
.copy-btn {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  background: transparent;
  border: 1px solid rgba(254, 231, 21, 0.4);
  border-radius: 999px;
  padding: 0.3rem 0.8rem;
  cursor: pointer;
  transition: all 0.25s var(--ease);
}
.copy-btn:hover { background: var(--accent-soft); box-shadow: 0 0 16px var(--accent-glow); }
.copy-btn.copied { background: var(--accent); color: var(--bg); border-color: var(--accent); }

.prompt-text {
  font-family: var(--font-mono);
  font-size: 0.83rem;
  line-height: 1.75;
  color: var(--text);
  padding: 1rem;
  white-space: pre-wrap;
  word-break: break-word;
}

.copy-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6ch;
  width: 100%;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--accent);
  color: var(--bg);
  border: none;
  border-radius: var(--radius);
  padding: 1rem;
  cursor: pointer;
  margin-bottom: 2.5rem;
  transition: all 0.25s var(--ease);
  box-shadow: 0 4px 24px rgba(254, 231, 21, 0.18);
}
.copy-cta:hover { transform: translateY(-1px); box-shadow: 0 6px 32px rgba(254, 231, 21, 0.3); }
.copy-cta:active { transform: translateY(0); }
.copy-cta.copied { background: #d4f515; }

/* --- examples ------------------------------------------------------- */
.examples {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.6rem;
  margin-bottom: 2.5rem;
}
.example {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  cursor: zoom-in;
  background: var(--bg-raised);
  padding: 0;
}
.example img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 1/1; transition: transform 0.4s var(--ease); }
.example:hover img { transform: scale(1.04); }
.example .ai-badge { position: absolute; bottom: 8px; left: 8px; }

/* --- lightbox -------------------------------------------------------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: rgba(10, 14, 20, 0.92);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  cursor: zoom-out;
}
.lightbox.open { display: flex; }
.lightbox img {
  max-width: 100%;
  max-height: 92dvh;
  border-radius: var(--radius);
  object-fit: contain;
}

/* --- footer business card -------------------------------------------- */
.site-footer {
  margin-top: auto;
  padding: 2rem clamp(0.75rem, 3vw, 1.5rem) 2.5rem;
}
.card {
  max-width: 440px;
  margin-inline: auto;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 1.25rem;
  padding: 1.5rem 1.25rem 1.25rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  top: -40px;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 80px;
  background: radial-gradient(ellipse at center, rgba(254, 231, 21, 0.12), transparent 70%);
  pointer-events: none;
}
.card-avatar {
  width: 68px;
  height: 68px;
  margin: 0 auto 0.75rem;
  border-radius: 50%;
  padding: 3px;
  background: conic-gradient(from 180deg, var(--accent), rgba(254, 231, 21, 0.15), var(--accent));
}
.card-avatar-inner {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--accent);
  overflow: hidden;
}
.card-avatar-inner img { width: 100%; height: 100%; object-fit: cover; border-radius: 50%; }
.card-name { font-weight: 700; font-size: 1.1rem; letter-spacing: -0.01em; }
.card-tagline {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-top: 0.25rem;
}
.card-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0 0.9rem;
}
.card-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-raised);
  color: var(--text-dim);
  transition: all 0.25s var(--ease);
}
.card-link:hover {
  color: var(--accent);
  border-color: rgba(254, 231, 21, 0.4);
  box-shadow: 0 0 16px rgba(254, 231, 21, 0.15);
  transform: translateY(-2px);
}
.card-link svg { width: 18px; height: 18px; }
.card-all-links {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--bg);
  background: var(--accent);
  border-radius: 999px;
  padding: 0.5rem 1.2rem;
  transition: all 0.25s var(--ease);
}
.card-all-links:hover { box-shadow: 0 4px 20px var(--accent-glow); transform: translateY(-1px); }
.card-copy {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--text-mute);
  margin-top: 1rem;
}

/* --- 404 --------------------------------------------------------------- */
.error-page {
  text-align: center;
  padding: 5rem 1rem;
  font-family: var(--font-mono);
}
.error-code { font-size: 4rem; font-weight: 700; color: var(--accent); }
.error-text { color: var(--text-dim); margin: 0.5rem 0 1.5rem; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}