:root {
  --primary-900: #0d2d56;
  --primary-800: #123a6a;
  --primary-700: #194d8e;
  --primary-600: #1f5da4;
  --accent: #ef6b3d;
  --accent-deep: #db4d2a;
  --navy-soft: #eaf1fb;
  --surface: rgba(255, 255, 255, 0.86);
  --surface-strong: #ffffff;
  --ink: #13263d;
  --muted: #566780;
  --line: rgba(15, 35, 61, 0.1);
  --shadow-soft: 0 14px 30px rgba(17, 38, 62, 0.12);
  --shadow-card: 0 16px 42px rgba(10, 27, 48, 0.1);
  --radius-lg: 30px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  font-family: 'Inter', 'Noto Sans Bengali', sans-serif;
  color: var(--ink);
  background: #f5f7fb;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

button,
input,
select {
  font: inherit;
}

.container {
  width: min(var(--max-width), calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-bottom: none;
}

.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 94px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.logo-mark {
  width: 58px;
  height: 58px;
  flex: 0 0 58px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 4px 12px rgba(13, 45, 86, 0.18);
}

.brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  min-width: 0;
}

.school-bengali {
  font-family: 'Noto Sans Bengali', sans-serif;
  color: var(--primary-900);
  font-weight: 700;
  font-size: clamp(0.9rem, 0.75rem + 0.9vw, 1.35rem);
}

.school-english {
  letter-spacing: 0.05em;
  color: var(--primary-800);
  font-weight: 800;
  font-size: clamp(0.7rem, 0.58rem + 0.6vw, 1.05rem);
}

.brand-copy small {
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.18em;
  margin-top: 4px;
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  background: rgba(255,255,255,0.32);
  border: 1px solid rgba(68, 95, 146, 0.12);
  border-radius: 999px;
  padding: 8px 10px;
  box-shadow: 0 8px 24px rgba(13, 45, 86, 0.09);
}

.main-nav a {
  position: relative;
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink);
  transition: all 0.2s ease;
}

.main-nav a:hover,
.main-nav a:focus-visible,
.main-nav a.active {
  background: rgba(22, 68, 120, 0.08);
  color: var(--primary-900);
}

.main-nav a.active::after {
  content: '';
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 5px;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--primary-700), var(--accent));
}

.menu-toggle {
  display: none;
  background: rgba(255,255,255,0.3);
  border: 1px solid rgba(26, 44, 63, 0.12);
  border-radius: 12px;
  width: 48px;
  height: 48px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  border-radius: 999px;
  background: var(--primary-900);
}

.dock-wrap {
  position: relative;
  z-index: 40;
  margin-top: 0;
  display: none;
}

.floating-dock {
  width: min(var(--max-width), calc(100% - 32px));
  margin: 0 auto;
  background: rgba(255,255,255,0.88);
  border: 1px solid rgba(17, 36, 60, 0.08);
  border-radius: 999px;
  box-shadow: var(--shadow-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 12px 16px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.floating-dock a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border-radius: 999px;
  font-weight: 600;
  color: var(--ink);
  transition: all 0.2s ease;
}

.floating-dock a:hover,
.floating-dock a:focus-visible,
.floating-dock a.active {
  background: rgba(25, 77, 142, 0.08);
  color: var(--primary-900);
}

.floating-dock .icon {
  display: inline-flex;
  width: 20px;
  height: 20px;
}

.floating-dock svg {
  width: 100%;
  height: 100%;
  fill: currentColor;
}

.hero {
  position: relative;
  min-height: 860px;
  display: flex;
  align-items: center;
  background-image: url('./hero0.png');
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.12);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(4, 18, 30, 0.45) 0%, rgba(9, 23, 39, 0.30) 35%, rgba(9, 23, 39, 0.18) 100%);
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  padding-top: 90px;
  padding-bottom: 80px;
}

.hero-copy {
  max-width: 610px;
  color: #fff;
}

.eyebrow {
  margin: 0 0 18px;
  font-size: 0.8rem;
  letter-spacing: 0.22em;
  font-weight: 700;
  color: rgba(255,255,255,0.9);
  text-transform: uppercase;
}

.eyebrow.dark {
  color: var(--primary-700);
}

.hero-copy h1 {
  margin: 0;
  font-size: clamp(2.55rem, 1.8rem + 2vw, 5rem);
  line-height: 0.98;
  letter-spacing: -0.05em;
}

.hero-copy h2 {
  margin: 0 0 18px;
  font-family: 'Noto Sans Bengali', sans-serif;
  font-size: clamp(2rem, 1.5rem + 2vw, 4rem);
  letter-spacing: -0.02em;
  line-height: 1.08;
}

.lead {
  margin: 0;
  font-size: clamp(1.05rem, 1rem + 0.35vw, 1.7rem);
  font-weight: 600;
  color: rgba(255,255,255,0.95);
}

.summary {
  margin: 14px 0 28px;
  max-width: 540px;
  font-size: 1.05rem;
  color: rgba(255,255,255,0.82);
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 999px;
  font-weight: 700;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-700), var(--primary-900));
  color: white;
  box-shadow: 0 14px 30px rgba(16, 46, 79, 0.27);
}

.btn-secondary {
  background: rgba(255,255,255,0.16);
  border-color: rgba(255,255,255,0.52);
  color: white;
}

.section {
  padding: 88px 0;
}

.section-panel {
  background: linear-gradient(180deg, rgba(255,255,255,0.72), rgba(245,247,250,0.9));
}

.alt-bg {
  background: #edf3fb;
}

.section-heading {
  margin-bottom: 28px;
}

.section-heading h3 {
  margin: 0;
  font-size: clamp(2rem, 1.6rem + 1vw, 2.8rem);
  line-height: 1.15;
}

.small-gap {
  margin-bottom: 26px;
}

.quick-links {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
}

.quick-card {
  background: rgba(255,255,255,0.84);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 26px 22px;
  box-shadow: var(--shadow-card);
}

.quick-card h4 {
  margin: 0 0 10px;
  font-size: 1.1rem;
}

.quick-card p {
  margin: 0;
  color: var(--muted);
}

.two-column {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 30px;
  align-items: start;
}

.description {
  color: var(--muted);
  font-size: 1.05rem;
}

.check-list {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--ink);
}

.check-list li::before {
  content: '✓';
  display: inline-flex;
  width: 22px;
  height: 22px;
  justify-content: center;
  align-items: center;
  border-radius: 50%;
  font-weight: 900;
  background: rgba(239, 107, 61, 0.12);
  color: var(--accent-deep);
}

.info-card,
.mini-panel,
.contact-card {
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.info-card {
  padding: 30px 24px;
}

.info-card h4 {
  margin: 0 0 20px;
  font-size: 1.3rem;
}

.info-table {
  display: grid;
  gap: 12px;
}

.info-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(18, 23, 34, 0.08);
}

.info-row:last-child {
  border-bottom: none;
}

.info-row .label {
  font-weight: 600;
  color: var(--ink);
}

.info-row .value {
  text-align: right;
  color: var(--muted);
}

.academics-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.mini-panel {
  padding: 24px 22px;
}

.mini-panel h4 {
  margin: 0 0 10px;
  font-size: 1.15rem;
}

.mini-panel p,
.mini-panel li {
  margin: 0;
  color: var(--muted);
}

.wide-panel {
  grid-column: span 2;
}

.subject-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 16px;
}

.subject-list li {
  position: relative;
  padding-left: 18px;
}

.subject-list li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 800;
}

.facility-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.facility-item {
  background: rgba(255,255,255,0.85);
  border: 1px solid rgba(16, 28, 43, 0.08);
  border-radius: var(--radius-md);
  padding: 22px 20px;
  box-shadow: var(--shadow-card);
}

.facility-item .topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.facility-item h4 {
  margin: 0;
  font-size: 1.1rem;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(25, 77, 142, 0.08);
  color: var(--primary-800);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.facility-item p {
  margin: 0;
  color: var(--muted);
}

.notice-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
}

.notice-toolbar {
  display: flex;
  align-items: flex-end;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}

.search-box,
.filter-box {
  display: flex;
  flex-direction: column;
  gap: 8px;
  color: var(--muted);
  font-weight: 600;
}

.search-box {
  flex: 1;
  min-width: min(100%, 280px);
}

.filter-box {
  min-width: 180px;
}

.search-box input,
.filter-box select {
  width: 100%;
  min-height: 50px;
  border: 1px solid rgba(17, 36, 52, 0.12);
  border-radius: 12px;
  padding: 0 15px;
  background: rgba(255,255,255,0.7);
  color: var(--ink);
}

.search-box input:focus,
.filter-box select:focus,
.menu-toggle:focus-visible,
.main-nav a:focus-visible,
.btn:focus-visible,
.lightbox-close:focus-visible,
.gallery-item:focus-visible {
  outline: 3px solid rgba(31, 93, 164, 0.25);
  outline-offset: 2px;
}

.notice-list {
  display: grid;
  gap: 16px;
}

.notice-empty {
  background: rgba(255,255,255,0.78);
  border: 1px dashed rgba(17, 36, 52, 0.18);
  border-radius: var(--radius-md);
  padding: 28px;
  text-align: center;
  color: var(--muted);
  font-weight: 600;
}

.notice-item {
  background: rgba(255,255,255,0.8);
  border: 1px solid rgba(17, 36, 52, 0.08);
  border-radius: 18px;
  box-shadow: var(--shadow-card);
  padding: 22px 20px;
}

.notice-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.notice-category {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(239, 107, 61, 0.1);
  color: var(--accent-deep);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.notice-date {
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 600;
}

.notice-item h4 {
  margin: 0 0 8px;
  font-size: 1.3rem;
}

.notice-item p {
  margin: 0;
  color: var(--muted);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.gallery-item {
  position: relative;
  min-height: 250px;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(16, 28, 43, 0.08);
  background-size: cover;
  background-position: center center;
  box-shadow: var(--shadow-card);
  cursor: pointer;
}

.gallery-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 14, 25, 0.08), rgba(8, 14, 25, 0.62));
}

.gallery-item span {
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: 18px;
  z-index: 1;
  color: #fff;
  font-weight: 700;
}

.lightbox {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(3, 10, 18, 0.82);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
  z-index: 200;
}

.lightbox.open {
  opacity: 1;
  visibility: visible;
}

.lightbox img {
  max-width: min(100%, 1040px);
  max-height: 84vh;
  border-radius: 18px;
  box-shadow: 0 28px 60px rgba(0,0,0,0.32);
  background: rgba(255,255,255,0.1);
}

.lightbox-close {
  position: absolute;
  top: 26px;
  right: 26px;
  width: 48px;
  height: 48px;
  border: none;
  border-radius: 50%;
  background: rgba(255,255,255,0.14);
  color: #fff;
  font-size: 2rem;
  cursor: pointer;
}

.contact-section {
  background: var(--primary-900);
  color: white;
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 30px;
  align-items: start;
}

.contact-grid .eyebrow.dark {
  color: rgba(255,255,255,0.7);
}

.contact-grid .description {
  color: rgba(255,255,255,0.76);
}

.contact-card {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.12);
  padding: 26px;
}

.contact-item {
  display: grid;
  gap: 6px;
  padding: 15px 0;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}

.contact-item:last-child {
  border-bottom: none;
}

.contact-item .label {
  color: rgba(255,255,255,0.7);
  font-size: 0.84rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.contact-item strong {
  font-size: 1.05rem;
}

.map-preview {
  margin-top: 52px;
}

.map-preview-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.map-preview-heading .eyebrow {
  margin-bottom: 8px;
}

.map-preview-heading h4 {
  margin: 0;
  font-size: clamp(1.3rem, 1rem + 1vw, 1.8rem);
}

.map-directions {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid rgba(255,255,255,0.38);
  border-radius: 999px;
  color: #fff;
  font-weight: 600;
}

.map-directions:hover,
.map-directions:focus-visible {
  background: rgba(255,255,255,0.12);
}

.map-frame {
  display: block;
  width: 100%;
  height: 320px;
  border: 0;
  border-radius: var(--radius-md);
  box-shadow: 0 14px 30px rgba(0,0,0,0.18);
}

.site-footer {
  background: #081b2d;
  color: rgba(255,255,255,0.75);
  padding: 22px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-inner strong,
.footer-inner span {
  display: block;
}

.footer-credit {
  text-align: right;
}

.footer-credit a {
  display: inline-block;
  margin-bottom: 4px;
  color: #fff;
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-underline-offset: 4px;
}

.footer-credit a:hover,
.footer-credit a:focus-visible {
  color: #ffd4c5;
}

@media (max-width: 980px) {
  .main-nav {
    position: absolute;
    top: calc(100% + 12px);
    left: 16px;
    right: 16px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 10px;
    border-radius: 20px;
    background: rgba(248,250,252,0.96);
  }

  .main-nav.open {
    display: flex;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .floating-dock {
    flex-wrap: wrap;
    border-radius: 26px;
  }

  .quick-links,
  .facility-list,
  .gallery-grid,
  .academics-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .two-column,
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .nav-shell {
    min-height: 78px;
  }

  .brand {
    gap: 10px;
  }

  .logo-mark {
    width: 48px;
    height: 48px;
  }

  .main-nav a {
    width: 100%;
    text-align: center;
  }

  .hero {
    min-height: 640px;
  }

  .hero-copy {
    max-width: 100%;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .btn {
    width: 100%;
  }

  .quick-links,
  .facility-list,
  .gallery-grid,
  .academics-grid,
  .subject-list {
    grid-template-columns: 1fr;
  }

  .wide-panel {
    grid-column: auto;
  }

  .notice-toolbar {
    display: grid;
    grid-template-columns: 1fr;
  }

  .map-preview-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-credit {
    text-align: left;
  }

  .map-frame {
    height: 260px;
  }

  .floating-dock {
    justify-content: flex-start;
    overflow-x: auto;
    padding: 10px 14px;
  }

  .floating-dock a {
    white-space: nowrap;
  }
}