body { background: #0b0c10; color: #e9eef7; line-height: 1.6; }
    .container { max-width: 1400px; margin: 0 auto; padding: 40px 20px; }
    h1, h2, h3 { color: #fff; }
    h1 { font-size: 2.2em; margin-bottom: 10px; }
    h2 { font-size: 1.6em; margin-top: 40px; border-left: 4px solid #ffd84d; padding-left: 10px; }
    p { margin: 12px 0; }
    .example { background: rgba(255,255,255,0.05); border-radius: 12px; padding: 16px; margin: 12px 0; }
    code { background: rgba(255,255,255,0.08); padding: 2px 6px; border-radius: 6px; font-family: monospace; }
    table { width: 100%; border-collapse: collapse; margin-top: 20px; }
    th, td { border: 1px solid rgba(255,255,255,0.1); padding: 10px; text-align: left; }
    th { background: rgba(255,255,255,0.1); }
    .cta { text-align: center; margin: 50px 0; }

    .prompt-layout {
  display: flex;
  gap: 30px;
  margin-top: 30px;
}

.prompt-sidebar {
  flex: 0 0 240px;
  background: rgba(255,255,255,0.04);
  border-radius: 12px;
  padding: 16px;
  height: fit-content;
  position: sticky;
  top: 100px;
}

.prompt-sidebar ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.prompt-sidebar li {
  padding: 10px 14px;
  border-radius: 8px;
  cursor: pointer;
  color: #ddd;
  transition: all 0.2s;
  border: 1px solid transparent;
}

.prompt-sidebar li:hover {
  background: rgba(255,255,255,0.08);
}

.prompt-sidebar li.active {
  background: var(--accent1);
  color: #000;
  font-weight: 600;
  border-color: var(--accent1);
  box-shadow: 0 0 15px var(--neon-glow);
}

.prompt-content {
  flex: 1;
  background: rgba(255,255,255,0.03);
  padding: 20px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.05);
}

.before-after {
  display: flex;
  gap: 10px;
  justify-content: flex-start;
}
.before-after img {
  width: 48%;
  border-radius: 10px;
}

/* === Scroll to top button === */
#scrollTopBtn {
  position: fixed;
  right: 28px;
  bottom: 28px;
  width: 52px;
  height: 52px;
  border: 2px solid var(--neon);
  border-radius: 50%;
  background: rgba(255, 216, 77, 0.08);
  color: var(--neon);
  font-size: 26px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  box-shadow: 0 0 10px rgba(255, 216, 77, 0.15);
  z-index: 999;
}

#scrollTopBtn:hover {
  background: var(--neon);
  color: #0b0b0f;
  box-shadow: 0 0 25px var(--neon-glow), 0 0 45px var(--neon-glow);
  transform: translateY(-3px);
}

#scrollTopBtn.visible {
  opacity: 1;
  visibility: visible;
}

.copy-btn {
  margin-top: 8px;
  background: #ffd54f;
  color: #000;
  border: none;
  border-radius: 8px;
  padding: 8px 14px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.3s ease;
}
.copy-btn:hover {
  background: #ffeb3b;
  transform: translateY(-1px);
}

.copy-btn.copied {
  background: #4caf50;
  color: #fff;
  transform: scale(1.05);
}