/* 
  🥧 css/raspberry-pi.css
  Foundation styles for the Raspberry Pi "Today I Learned" section.
  Works together with global.css. Provides layout, video/copy components,
  and basic hub page structure. Theme-aware via CSS variables.
*/

/* ========== Page Container ========== */
.rpi-container {
  max-width: 860px;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
  line-height: 1.65;
}

/* ========== Hub Page ========== */
.rpi-intro {
  text-align: center;
  margin-bottom: 2rem;
  color: var(--text-color);
  opacity: 0.9;
}

.rpi-intro blockquote {
  font-style: italic;
  margin: 1rem 0 0;
  padding: 0 1rem;
  border-left: 3px solid var(--accent-color);
  opacity: 0.85;
}

.rpi-section-title {
  text-align: center;
  margin-bottom: 1rem;
}

.rpi-lab-list {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.rpi-lab-list li {
  background-color: var(--primary-color);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.3s;
}

.rpi-lab-list li:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgb(0 0 0 / 15%);
}

.rpi-lab-list a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-color);
  font-size: 1.1rem;
  font-weight: 500;
}

.rpi-lab-list a:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: 4px;
  border-radius: 6px;
}

.rpi-lab-list .lab-date {
  margin-left: auto;
  font-size: 0.85rem;
  font-family: system-ui, sans-serif;
  opacity: 0.7;
  white-space: nowrap;
}

/* ========== Lab Pages (Content Pages) ========== */
.rpi-lab-header {
  margin-bottom: 1.5rem;
  text-align: center;
}

.rpi-lab-header h1 {
  margin-bottom: 0.5rem;
}

/* Hardware Checklist */
.hardware-checklist {
  background-color: var(--primary-color);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}

.hardware-checklist h3 {
  margin: 0 0 1rem;
  font-size: 1rem;
  font-family: system-ui, sans-serif;
  font-weight: 600;
  color: var(--subheader-color);
  border-bottom: 1px solid var(--secondary-color);
  padding-bottom: 0.5rem;
}

.hardware-checklist ul {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0 0;
}

.hardware-checklist li {
  margin: 0.35rem 0;
  font-size: 0.95rem;
}

/* Improve checkbox visibility across themes */
.hardware-checklist input[type="checkbox"] {
  accent-color: var(--accent-color);
}

/* ========== Video Embeds ========== */
.video-container {
  margin: 1.5rem 0;
  border-radius: 12px;
  overflow: hidden;
  background: #000;
  box-shadow: 0 8px 30px rgb(0 0 0 / 25%);
  border: 1px solid var(--secondary-color);
}

.video-container video {
  width: 100%;
  display: block;
  height: auto;
}

/* ========== Copy Script Buttons ========== */
.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.1rem;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: system-ui, sans-serif;
  background-color: var(--secondary-color);
  color: var(--text-color);
  border: 1px solid var(--accent-color);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  margin: 0.75rem 0;
}

.copy-btn:hover {
  background-color: var(--accent-color);
  color: var(--primary-color);
  transform: translateY(-1px);
}

.copy-btn:active {
  transform: translateY(0);
}

.copy-btn:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: 3px;
}

/* ========== Utility / Legacy Support ========== */
.rpi-back-link {
  display: inline-block;
  margin-bottom: 1rem;
  color: var(--accent-color);
  text-decoration: none;
  font-size: 0.9rem;
  opacity: 0.9;
}

.rpi-back-link:hover {
  text-decoration: underline;
  opacity: 1;
}

/* Make sure images in lab pages are reasonable */
.rpi-container img {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  margin: 1rem 0;
}

/* Responsive tweaks */
@media (width >= 769px) {
  .rpi-container {
    padding: 2rem 1rem 4rem;
  }
  
  .rpi-lab-list {
    gap: 0.75rem;
  }
}