/* MURING Alarm Clock — manual page */

.manual-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: var(--brand-night);
  color: #FFFFFF;
}
.manual-header__row {
  display: flex;
  align-items: center;
  gap: 1rem;
  height: 56px;
}
.manual-header__brand {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  min-width: 0;
  overflow: hidden;
}
.manual-header__brand-name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
  flex-shrink: 0;
}
.manual-header__divider {
  width: 1px;
  height: 16px;
  background: rgba(255,255,255,0.3);
  flex-shrink: 0;
}
.manual-header__product {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.75);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Quick nav */
.quicknav {
  position: sticky;
  top: 56px;
  z-index: 29;
  background: var(--brand-surface);
  border-bottom: 1px solid var(--brand-line);
}
.quicknav__scroll {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-top: 0.6rem;
  padding-bottom: 0.6rem;
  scrollbar-width: none;
}
.quicknav__scroll::-webkit-scrollbar { display: none; }
.quicknav a {
  flex-shrink: 0;
  scroll-snap-align: start;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--brand-mute);
  background: var(--brand-bg);
  border: 1px solid var(--brand-line);
  border-radius: 999px;
  padding: 0.45rem 0.9rem;
  white-space: nowrap;
}
.quicknav a:hover { color: var(--brand-ink); }
.quicknav a.is-active {
  color: var(--brand-accent-ink);
  background: var(--brand-accent);
  border-color: var(--brand-accent);
}

/* Video */
.video-section {
  padding: 2.25rem 0 1rem;
}
.video-section h2 { font-size: 1.3rem; }
.video-section__note {
  color: var(--brand-mute);
  margin-bottom: 1.1rem;
}
.video-frame {
  border-radius: var(--radius-m);
  overflow: hidden;
  background: var(--brand-night);
  aspect-ratio: 16 / 9;
}
.video-frame video {
  width: 100%;
  height: 100%;
  display: block;
}

/* Product overview */
.product-overview {
  padding: 0.5rem 0 1rem;
}
.product-overview h2 { font-size: 1.3rem; }
.product-overview > .content > p {
  color: var(--brand-mute);
  margin-bottom: 1.25rem;
}
.product-photo {
  width: 100%;
  max-width: 360px;
  margin: 0 auto 1.5rem;
  border-radius: var(--radius-m);
}
.diagram-photo {
  width: 100%;
  border: 1px solid var(--brand-line);
  border-radius: var(--radius-m);
  background: #FFFFFF;
  padding: 0.5rem;
  margin-top: 0.5rem;
}

/* Written instructions */
.instructions {
  padding: 1rem 0 0.5rem;
}
.step-block p {
  color: var(--brand-mute);
  margin-bottom: 0.75rem;
}
.plain-list {
  list-style: none;
  margin: 0.75rem 0 0;
  padding: 0;
}
.plain-list li {
  padding: 0.6rem 0;
  border-top: 1px solid var(--brand-line);
  color: var(--brand-mute);
}
.plain-list li:first-child { border-top: none; }
.plain-list strong {
  color: var(--brand-ink);
  font-weight: 600;
}
.step-block {
  padding: 1.75rem 0;
  border-top: 1px solid var(--brand-line);
  scroll-margin-top: 116px;
}
.step-block h2 {
  font-size: 1.15rem;
}
.step-block ol {
  margin: 0;
  padding-left: 1.3rem;
}
.step-block li {
  margin-bottom: 0.55rem;
  padding-left: 0.2rem;
}
.step-block li:last-child { margin-bottom: 0; }
.step-block strong {
  font-weight: 600;
  color: var(--brand-accent);
}

/* Troubleshooting */
.troubleshooting {
  padding: 2rem 0 2.5rem;
  background: var(--brand-surface);
  border-top: 1px solid var(--brand-line);
  scroll-margin-top: 116px;
}
.troubleshooting h2 { font-size: 1.3rem; margin-bottom: 1.1rem; }

.faq__item {
  border-bottom: 1px solid var(--brand-line);
}
.faq__item summary {
  cursor: pointer;
  list-style: none;
  padding: 0.95rem 1.6rem 0.95rem 0;
  font-weight: 600;
  font-size: 0.98rem;
  position: relative;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: '+';
  position: absolute;
  right: 0;
  top: 0.85rem;
  font-family: var(--font-head);
  font-size: 1.2rem;
  color: var(--brand-accent);
}
.faq__item[open] summary::after { content: '–'; }
.faq__item p {
  color: var(--brand-mute);
  padding-bottom: 1rem;
  max-width: 60ch;
}

/* PDF download */
.pdf-download {
  padding: 2.25rem 0;
  border-top: 1px solid var(--brand-line);
}
.pdf-download h2 { font-size: 1.15rem; }
.pdf-download p { color: var(--brand-mute); margin-bottom: 1.1rem; }
.pdf-download__buttons {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
@media (min-width: 480px) {
  .pdf-download__buttons { flex-direction: row; }
}
.pdf-download__buttons .btn { flex: 1; justify-content: center; }

/* Support */
.support-block {
  padding: 2rem 0 2.75rem;
  border-top: 1px solid var(--brand-line);
}
.support-block h2 { font-size: 1.15rem; }
.support-block > .content > p { color: var(--brand-mute); }
.support-details {
  display: flex;
  flex-wrap: wrap;
  gap: 1.75rem;
  margin: 1.25rem 0 0;
}
.support-details dt {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--brand-mute);
  margin-bottom: 0.25rem;
}
.support-details dd {
  margin: 0;
  font-weight: 600;
}
.support-details a {
  text-decoration: none;
  color: var(--brand-ink);
}
.support-details a:hover { color: var(--brand-accent); }

.manual-footer {
  border-top: 1px solid var(--brand-line);
  padding: 1.5rem 0;
}
.manual-footer__row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--brand-mute);
}
.manual-footer a {
  text-decoration: none;
  color: var(--brand-mute);
}
.manual-footer a:hover { color: var(--brand-ink); }