/* ==========================================================
   স্কুল ওয়েবসাইট — মূল স্টাইল
   রং: গাঢ় সবুজ (বিদ্যালয়ের নোটিশ বোর্ডের মতো), গাঢ় হলুদ (পিন/অ্যাকসেন্ট)
   ফন্ট: শিরোনামে Noto Serif Bengali, লেখায় Hind Siliguri
   ========================================================== */
:root {
  --g900: #0A3D2E;
  --g700: #0E6B4F;
  --g100: #DDEBE5;
  --g50:  #EEF5F2;
  --ink:  #14211C;
  --muted: #566861;
  --line: #D3DFD9;
  --gold: #F2B01E;
  --red:  #C9243A;
  --bg:   #F6F9F7;
  --serif: 'Noto Serif Bengali', 'Hind Siliguri', serif;
  --sans: 'Hind Siliguri', system-ui, -apple-system, 'Segoe UI', sans-serif;
}

html { scroll-padding-top: 4.5rem; }
body {
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--ink);
  background: var(--bg);
}
h1, h2, h3, h4, .h1, .h2, .h3, .h4, .h5 {
  font-family: var(--serif);
  font-weight: 700;
  line-height: 1.45;
  color: var(--g900);
}
a { color: var(--g700); }
a:hover { color: var(--g900); }
:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; }
.skip-link { position: absolute; z-index: 2000; background: #fff; padding: .5rem 1rem; }

/* ---------- বোতাম ---------- */
.btn { font-weight: 500; }
.btn-green { background: var(--g700); border-color: var(--g700); color: #fff; }
.btn-green:hover, .btn-green:focus { background: var(--g900); border-color: var(--g900); color: #fff; }
.btn-outline-green { color: var(--g700); border-color: var(--g700); background: transparent; }
.btn-outline-green:hover, .btn-outline-green:focus { background: var(--g700); color: #fff; border-color: var(--g700); }

/* ---------- হেডার ---------- */
.topbar { background: var(--g900); color: rgba(255,255,255,.85); font-size: .875rem; padding: .3rem 0; line-height: 1.6; }
.topbar .container { column-gap: 1.5rem; }
.brandbar { background: #fff; padding: 1rem 0; border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 1rem; text-decoration: none; color: var(--g900); }
.brand-logo { width: 64px; height: 64px; object-fit: contain; flex: 0 0 64px; }
.brand-logo-fallback { display: flex; align-items: center; justify-content: center; border-radius: 50%; background: var(--g700); color: #fff; font-size: 1.9rem; }
.brand-name { display: block; font-family: var(--serif); font-weight: 800; font-size: clamp(1.25rem, 2.6vw + .5rem, 2rem); line-height: 1.35; }
.brand-addr { display: block; font-size: .95rem; color: var(--muted); }

.main-nav { background: var(--g700); padding: 0; }
.main-nav .nav-link { color: rgba(255,255,255,.92); padding: .85rem 1rem; font-weight: 500; }
.main-nav .nav-link:hover { color: #fff; background: rgba(255,255,255,.08); }
.main-nav .nav-link.active { color: #fff; box-shadow: inset 0 -4px 0 var(--gold); }
.main-nav .navbar-toggler { margin: .4rem 0; }
@media (max-width: 991.98px) {
  .main-nav .nav-link.active { box-shadow: inset 4px 0 0 var(--gold); background: rgba(255,255,255,.08); }
}

/* ---------- হিরো: স্লাইডার/পরিচিতি + নোটিশ বোর্ড ---------- */
.hero { background: var(--g50); padding: 1.75rem 0; }
.hero-carousel { border-radius: .5rem; overflow: hidden; height: 100%; min-height: 260px; background: var(--g100); }
.hero-img { height: clamp(260px, 42vw, 460px); object-fit: cover; }
.carousel-caption { left: 0; right: 0; bottom: 0; padding: 2.5rem 1.25rem 1.1rem; text-align: left; background: linear-gradient(transparent, rgba(0,0,0,.65)); }
.carousel-caption span { font-family: var(--serif); font-size: 1.15rem; }

.hero-panel {
  height: 100%; min-height: 340px; border-radius: .5rem; padding: 2.25rem;
  display: flex; flex-direction: column; justify-content: flex-end;
  color: #fff; background-color: var(--g700);
  background-image: radial-gradient(rgba(255,255,255,.1) 1.5px, transparent 1.5px);
  background-size: 22px 22px;
}
.hero-panel h1 { color: #fff; font-weight: 800; font-size: clamp(1.9rem, 3.4vw + .6rem, 3rem); margin-bottom: .5rem; }
.hero-tagline { font-family: var(--serif); font-size: 1.25rem; margin-bottom: .25rem; }
.hero-est { margin: 0; color: var(--gold); font-weight: 600; }

.noticeboard { background: var(--g900); border-radius: .5rem; padding: 1rem; height: 100%; }
.noticeboard-head h2 { color: #fff; font-size: 1.3rem; margin: 0 0 .85rem; }
.noticeboard-head .bi { color: var(--gold); }
.notice-strip {
  display: flex; align-items: center; gap: .85rem;
  background: #fff; color: var(--ink); text-decoration: none;
  padding: .55rem .8rem; border-left: 5px solid var(--gold); border-radius: .25rem;
  margin-bottom: .5rem; line-height: 1.55;
}
.notice-strip:hover { background: var(--g50); color: var(--g900); }
.date-block { flex: 0 0 4.4rem; text-align: center; line-height: 1.15; color: var(--g900); }
.date-block b { display: block; font-family: var(--serif); font-size: 1.6rem; }
.date-block small { display: block; font-size: .74rem; color: var(--muted); }
.badge-new { display: inline-block; background: var(--red); color: #fff; font-size: .72rem; line-height: 1.5; padding: 0 .5rem; border-radius: 1rem; margin-left: .35rem; vertical-align: middle; }
.noticeboard-empty { color: rgba(255,255,255,.8); }
.noticeboard-all { display: inline-block; margin-top: .35rem; color: var(--gold); font-weight: 600; text-decoration: none; }
.noticeboard-all:hover { color: #fff; }

/* ---------- দ্রুত লিংক ---------- */
.quick { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: .5rem; overflow: hidden; }
.quick-item { display: flex; gap: .9rem; align-items: center; background: #fff; padding: 1.1rem 1.25rem; text-decoration: none; color: var(--ink); line-height: 1.45; }
.quick-item:hover { background: var(--g50); }
.quick-item > .bi { font-size: 1.9rem; color: var(--g700); }
.quick-item strong { display: block; font-family: var(--serif); color: var(--g900); }
.quick-item small { color: var(--muted); }
@media (max-width: 991.98px) { .quick { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 479.98px) { .quick { grid-template-columns: 1fr; } }

/* ---------- সাধারণ সেকশন ---------- */
.section { padding: 2.5rem 0; }
.section.band { background: var(--g50); }
.section-title { font-size: 1.5rem; margin-bottom: 1.1rem; padding-left: .8rem; border-left: 6px solid var(--gold); }
.prose { max-width: 70ch; }
.prose p:last-child { margin-bottom: 0; }
.more-link { display: inline-block; margin-top: .75rem; font-weight: 600; }
.chip { display: inline-block; background: var(--g100); color: var(--g900); font-size: .82rem; padding: 0 .65rem; border-radius: 1rem; }
.meta { color: var(--muted); display: flex; flex-wrap: wrap; gap: .5rem 1rem; align-items: center; }
.empty-state { background: #fff; border: 1px dashed var(--line); padding: 2rem 1rem; text-align: center; color: var(--muted); border-radius: .5rem; }

.page-head {
  background-color: var(--g900); color: #fff; padding: 2.25rem 0;
  background-image: radial-gradient(rgba(255,255,255,.08) 1.5px, transparent 1.5px);
  background-size: 20px 20px;
}
.page-head h1 { color: #fff; font-size: clamp(1.7rem, 2.6vw + .8rem, 2.5rem); margin: 0 0 .25rem; }
.page-head p { color: rgba(255,255,255,.85); }

/* ---------- ফিল্টার ---------- */
.filter-bar { display: flex; flex-wrap: wrap; gap: .6rem; margin-bottom: 1.5rem; }
.filter-bar .form-control { flex: 1 1 240px; max-width: 380px; }
.filter-bar .form-select { flex: 0 1 220px; }

/* ---------- নোটিশ তালিকা ---------- */
.notice-list { background: #fff; border: 1px solid var(--line); border-radius: .5rem; overflow: hidden; }
.notice-row { display: flex; align-items: center; gap: 1rem; padding: .8rem 1.1rem; color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--line); }
.notice-row:last-child { border-bottom: 0; }
.notice-row:hover { background: var(--g50); }
.notice-row .date-block { flex-basis: 5.6rem; }
.notice-row-main { flex: 1; min-width: 0; }
.notice-row-title { display: block; font-weight: 600; line-height: 1.55; }
.notice-detail { background: #fff; border: 1px solid var(--line); border-radius: .5rem; padding: 1.5rem; }
.pdf-frame { width: 100%; height: 80vh; border: 1px solid var(--line); }

/* ---------- ফলাফল/রুটিন টেবিল, ডকুমেন্ট তালিকা ---------- */
.table-docs th { background: var(--g50); color: var(--g900); font-family: var(--serif); white-space: nowrap; }
.doc-list { list-style: none; margin: 0; padding: 0; }
.doc-list li { border-bottom: 1px solid var(--line); }
.doc-list a { display: flex; align-items: baseline; gap: .7rem; padding: .7rem .25rem; text-decoration: none; color: var(--ink); }
.doc-list a:hover { color: var(--g700); background: var(--g50); }
.doc-list .bi { color: var(--g700); }
.doc-list a span { flex: 1; }
.doc-list small { color: var(--muted); }

/* ---------- ছবির ফ্রেম (শিক্ষক, প্রধান শিক্ষক, প্রতিষ্ঠাতা) ---------- */
.avatar-fallback { display: flex; align-items: center; justify-content: center; background: var(--g100); color: var(--g700); font-family: var(--serif); font-weight: 800; font-size: 3.5rem; }
.portrait { width: 100%; max-width: 280px; aspect-ratio: 4 / 5; object-fit: cover; display: block; border-radius: .5rem; border: 4px solid #fff; box-shadow: 0 0 0 1px var(--line); }
.portrait-name { font-family: var(--serif); font-weight: 700; color: var(--g900); margin-top: .75rem; line-height: 1.5; }
.portrait-title { color: var(--muted); margin-bottom: 0; }
.founder-block { padding-bottom: 2rem; margin-bottom: 2rem; border-bottom: 1px solid var(--line); }
.founder-block:last-child { border-bottom: 0; margin-bottom: 0; }

.teacher-card { background: #fff; border: 1px solid var(--line); border-radius: .5rem; overflow: hidden; height: 100%; }
.teacher-photo { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; display: flex; }
img.teacher-photo { display: block; }
.teacher-body { padding: .85rem 1rem 1rem; }
.teacher-body h3 { font-size: 1.1rem; margin: 0 0 .1rem; }
.teacher-role { color: var(--g700); font-weight: 600; margin-bottom: .35rem; line-height: 1.5; }
.teacher-line { margin: 0; font-size: .95rem; color: var(--muted); line-height: 1.6; }
.teacher-line .bi { color: var(--g700); }

/* ---------- এক নজরে ---------- */
.glance-band { background: #fff; border-block: 1px solid var(--line); padding: 1.1rem 0; }
.glance { display: flex; flex-wrap: wrap; gap: .75rem 3rem; }
.glance dt { font-weight: 500; font-size: .9rem; color: var(--muted); line-height: 1.4; }
.glance dd { margin: 0; font-family: var(--serif); font-weight: 700; font-size: 1.25rem; color: var(--g900); }
.info-list { border: 1px solid var(--line); background: #fff; border-radius: .5rem; padding: .5rem 1.1rem; margin: 0; }
.info-list dt { font-size: .88rem; color: var(--muted); font-weight: 500; padding-top: .6rem; line-height: 1.4; }
.info-list dd { margin: 0; padding-bottom: .6rem; border-bottom: 1px solid var(--line); font-weight: 500; }
.info-list dd:last-child { border-bottom: 0; }

/* ---------- টাইমলাইন (ইতিহাস) ---------- */
.timeline { list-style: none; margin: 0; padding: 0 0 0 2rem; border-left: 3px solid var(--g100); max-width: 780px; }
.timeline-item { position: relative; padding-bottom: 1.9rem; }
.timeline-item::before {
  content: ''; position: absolute; left: calc(-2rem - 9px); top: .6rem;
  width: 15px; height: 15px; border-radius: 50%;
  background: var(--gold); border: 3px solid var(--bg); box-shadow: 0 0 0 2px var(--g700);
}
.timeline-year { font-family: var(--serif); font-weight: 800; font-size: 1.4rem; color: var(--g700); line-height: 1.4; }

/* ---------- পেজিনেশন ---------- */
.pagination .page-link { color: var(--g700); }
.pagination .page-item.active .page-link { background: var(--g700); border-color: var(--g700); color: #fff; }

/* ---------- ফুটার ---------- */
.site-footer { background: var(--g900); color: rgba(255,255,255,.85); padding: 2.5rem 0 1rem; margin-top: 1rem; line-height: 1.8; }
.site-footer h2 { color: #fff; }
.footer-link { color: rgba(255,255,255,.85); text-decoration: none; }
.footer-link:hover { color: var(--gold); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.15); margin-top: 1.75rem; padding-top: 1rem; font-size: .9rem; }

@media (prefers-reduced-motion: reduce) {
  .carousel-item { transition: none; }
}

.portrait.avatar-fallback { display: flex; }