/* ═══════════════════════════════════════════════════════════
   protocols.css — Styles for protocols.php (listing)
                   and protocol.php (iframe viewer)
   ═══════════════════════════════════════════════════════════ */

/* ── Year tabs ──────────────────────────────────────────── */
.protocols-year-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
  border-bottom: 2px solid var(--border-lt);
  padding-bottom: 0;
}

.protocols-year-tab {
  padding: 0.55rem 1.4rem;
  font-family: 'Montserrat', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-md);
  text-decoration: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  transition: color 0.15s, border-color 0.15s;
}

.protocols-year-tab:hover {
  color: var(--navy);
}

.protocols-year-tab.active {
  color: var(--navy);
  border-bottom-color: var(--navy);
}

/* ── Listing ────────────────────────────────────────────── */
.protocols-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.protocols-list li {
  border-bottom: 1px solid var(--border-lt);
}

.protocols-list li:first-child {
  border-top: 1px solid var(--border-lt);
}

.protocols-list-item {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1rem 0.5rem;
  text-decoration: none;
  transition: background 0.15s, padding 0.15s;
}

.protocols-list-item:hover {
  background: var(--bg-lt, #f7f6f2);
  padding-right: 1rem;
}

.protocols-list-date {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-lt);
  white-space: nowrap;
  min-width: 130px;
}

.protocols-list-title {
  font-family: 'Frank Ruhl Libre', serif;
  font-size: 1rem;
  color: var(--text-dk);
  flex: 1;
}

.protocols-list-arrow {
  font-size: 1rem;
  color: var(--text-lt);
  transition: transform 0.15s, color 0.15s;
  flex-shrink: 0;
}

.protocols-list-item:hover .protocols-list-arrow {
  color: var(--navy);
  transform: translateX(-4px);
}

.protocols-empty {
  color: var(--text-lt);
  font-size: 0.95rem;
  padding: 2rem 0;
}

/* ── Viewer toolbar ─────────────────────────────────────── */
.protocol-viewer-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.protocol-back-btn {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-md);
  text-decoration: none;
  transition: color 0.15s;
}

.protocol-back-btn:hover {
  color: var(--navy);
}

.protocols-download-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 1rem;
  border: 1.5px solid var(--navy);
  border-radius: 999px;
  font-family: 'Montserrat', sans-serif;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--navy);
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.15s, color 0.15s;
}

.protocols-download-btn:hover {
  background: var(--navy);
  color: #fff;
}

/* ── iframe ─────────────────────────────────────────────── */
.protocol-iframe {
  width: 100%;
  height: 78vh;
  border: 1px solid var(--border-lt);
  border-radius: 6px;
  display: block;
}

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 640px) {
  .protocols-list-item {
    flex-wrap: wrap;
    gap: 0.25rem;
  }

  .protocols-list-date {
    min-width: unset;
    width: 100%;
  }

  .protocols-list-arrow {
    display: none;
  }

  .protocol-iframe {
    height: 65vh;
  }
}