/* ===== Teachers page — optimized ===== */
#teachers-page {
  background: var(--background-light);
  color: var(--text-dark);
  min-height: 100vh;
  padding: 32px 0 48px;

  --tp-photo-w: 14rem;
  --tp-photo-h: 18rem;
  --nav-width-desktop: 100%;
  --nav-width-mobile: 100%;
  --inst-tab-w: 140px; --inst-tab-h: 2.5rem;
  --teacher-tab-w: 7rem; --teacher-tab-h: 2.5rem;
}

#teachers-page .tp-container{ max-width: var(--page-max-width); margin: 0 auto; padding: 0 16px; }
#teachers-page .tp-header{ margin-bottom: 18px; position: relative; }
#teachers-page .tp-title{ font-family:'SEBANG_Gothic_Bold',sans-serif; font-size:2.25rem; margin:0 0 6px; color:var(--text-dark); }
#teachers-page .tp-sub{ margin:0; color:#6b7280; font-size:.95rem; }
#teachers-page .tp-divider{ height:1px; background:#e5e7eb; margin:16px 0; }

#teachers-page .tp-grid{ display:grid; gap:16px; grid-template-columns:1fr; }
@media (min-width:900px){ #teachers-page .tp-grid{ grid-template-columns: 2fr 3fr; gap:20px; } }

#teachers-page .tp-name{ font-size:1.5rem; font-weight:600; margin:0; color:var(--text-dark); }
#teachers-page .tp-muted{ color:#6b7280; }
#teachers-page .tp-bio{ white-space: normal; line-height:1.3; }
#teachers-page .tp-bio p{ margin:0 0 10px; }
#teachers-page .tp-bio p:last-child{ margin-bottom:0; }
/* Preserve visual spacing for empty or <br>-only paragraphs so multiple line breaks are visible */
#teachers-page .tp-bio p:empty{ min-height: 1em; }
@supports(selector(:has(*))) {
  #teachers-page .tp-bio p:has(> br:only-child){ min-height: 1em; }
}
/* If a paragraph only contains an empty inline wrapper (e.g., <span></span>), preserve height */
#teachers-page .tp-bio p > span:empty::before,
#teachers-page .tp-bio p > em:empty::before,
#teachers-page .tp-bio p > strong:empty::before,
#teachers-page .tp-bio p > i:empty::before,
#teachers-page .tp-bio p > b:empty::before{ content: "\00A0"; }
@supports(selector(:has(*))) {
  #teachers-page .tp-bio p:has(> span:empty),
  #teachers-page .tp-bio p:has(> em:empty),
  #teachers-page .tp-bio p:has(> strong:empty),
  #teachers-page .tp-bio p:has(> i:empty),
  #teachers-page .tp-bio p:has(> b:empty){ min-height: 1em; }
}

/* Colors used by editor content */
#teachers-page .tp-bio .c-primary{ color: var(--primary-color); }
#teachers-page .tp-bio .c-sec-light{ color: var(--secondary-color-light); }
#teachers-page .tp-bio .c-sec-dark{ color: var(--secondary-color-dark); }
#teachers-page .tp-bio .c-highlight{ background: var(--highlight-color); color: var(--on-highlight, #000); padding: 0 .15em; border-radius: 4px; }

/* Badges */
#teachers-page .tp-badges{ display:flex; flex-wrap:wrap; gap:6px; margin-top:10px; }
#teachers-page .tp-badge{ display:inline-block; font-size:12px; padding:4px 8px; border-radius:9999px; background: var(--white-color); color:#374151; border:1px solid rgba(0,0,0,.06); }
#teachers-page .tp-badge.soft{ background:rgba(64,105,115,.08); color:var(--primary-color); border-color:rgba(64,105,115,.18); }

/* Skeletons */
#teachers-page .tp-skeleton{ position:relative; overflow:hidden; background:#eef2f7; border-radius:8px; }
#teachers-page .tp-skeleton::after{ content:""; position:absolute; inset:0; background:linear-gradient(90deg,transparent,rgba(255,255,255,.6),transparent); transform:translateX(-100%); animation:tp-shimmer 1.2s infinite; }
@keyframes tp-shimmer{ 100%{ transform: translateX(100%);} }
#teachers-page .tp-sk-title{ height:22px; width:60%; margin-bottom:10px; }
#teachers-page .tp-sk-line{ height:14px; width:70%; margin-bottom:8px; border-radius:6px; }
#teachers-page .tp-sk-line.wide{ width:85%; }
#teachers-page .tp-sk-badge{ width:70px; height:26px; border-radius:9999px; }
#teachers-page .tp-sk-fill{ width:100%; height:100%; border-radius:10px; }

/* Lists navigation (chips) */
#teachers-page .tp-nav{ display:flex; width:var(--nav-width-desktop); background:var(--primary-color); border:none; border-radius:0; overflow-x:auto; scrollbar-width:thin; margin:8px 0 12px; }
#teachers-page .tp-nav::-webkit-scrollbar{ height:8px; }
#teachers-page #instrumentTabs.tp-nav{ --tab-w: var(--inst-tab-w); --tab-h: var(--inst-tab-h); }
#teachers-page #teacherTabs.tp-nav{ --tab-w: var(--teacher-tab-w); --tab-h: var(--teacher-tab-h); }
#teachers-page .tp-nav-item{
  flex:0 0 var(--tab-w); max-width: var(--tab-w); height: var(--tab-h);
  display:flex; align-items:center; justify-content:center; padding:0; box-sizing:border-box;
  font-weight:600; color: var(--white-color); text-decoration:none; white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
  transition: background .12s ease, color .12s ease; background:transparent; border:0; cursor:pointer; appearance:none; -webkit-appearance:none;
}
#teachers-page .tp-nav-item:hover{ background: rgba(255,255,255,.10); }
#teachers-page .tp-nav-item.active{ background: rgba(255,255,255,.18); }
#teachers-page .tp-nav-item:focus-visible{ outline:2px solid rgba(255,255,255,.6); outline-offset:2px; }
#teachers-page .tp-nav-item.loading{ pointer-events:none; color:transparent; background:rgba(255,255,255,.12); }
#teachers-page .tp-nav-item.loading::after{ content:""; width:60%; height:14px; border-radius:7px; background:rgba(255,255,255,.35); }

/* Instrument tabs: desktop equal split; mobile grid */
#teachers-page #instrumentTabs.tp-nav{ flex-wrap:nowrap; overflow-x:hidden; overflow-y:hidden; gap:0; }
#teachers-page #instrumentTabs .tp-nav-item{ flex:1 1 0; max-width:none; min-width:0; }

/* Teacher tabs: horizontal scroll */
#teachers-page #teacherTabs.tp-nav{ justify-content:flex-start; flex-wrap:nowrap; overflow-x:auto; overflow-y:hidden; gap:8px; padding:0; -webkit-overflow-scrolling:touch; scrollbar-width:none; }
#teachers-page #teacherTabs.tp-nav::-webkit-scrollbar{ display:none; }

/* Photo block (fixed rectangular crop) */
#teachers-page .tp-photo{ width: clamp(10rem, 35vw, 14rem); aspect-ratio:14/18; height:auto; border-radius:10px; overflow:hidden; background:#f3f4f6; margin:0 0 10px; }
#teachers-page .tp-photo img{ width:100%; height:100%; object-fit:cover; display:block; }
#teachers-page .tp-col:first-child{ display:flex; flex-direction:column; align-items:flex-start; }

/* Mobile layout variables */
@media (max-width:640px){
  #teachers-page{ --inst-tab-w: 3rem; --inst-tab-h: 2rem; --teacher-tab-w: 3rem; --teacher-tab-h: 2rem; --nav-width-mobile: 100%; --inst-cols-mobile: 4; --teacher-cols-mobile: 4; }
  #teachers-page .tp-nav{ width: var(--nav-width-mobile); }
  #teachers-page #instrumentTabs.tp-nav, #teachers-page #teacherTabs.tp-nav{ flex-wrap:wrap; overflow-x:hidden; gap:0; padding:0; justify-content:flex-start; }
}
/* Availability row */
#teachers-page .tp-availability{ margin-top:4px; }
#teachers-page .tp-availability-table.one-row{ width:100%; max-width:14rem; border-collapse:collapse; font-size:12px; table-layout:fixed; }
#teachers-page .tp-availability-table.one-row td{ text-align:center; padding:6px 0; border-bottom:2px solid #e5e7eb; }
#teachers-page .tp-availability-table.one-row td.on{ color:#111; border-color:#111; font-weight:600; }
#teachers-page .tp-availability-table.one-row td.off{ color:#9ca3af; border-color:#e5e7eb; font-weight:500; }