:root {
  --teal-deep: #0B4F49;
  --teal: #157A70;
  --teal-light: #E7F4F2;
  --gold: #C9A227;
  --gold-soft: #E6C866;
  --ink: #17302C;
  --muted: #5B7370;
  --bg: #FFFFFF;
  --bg-alt: #F6FAF9;
  --line: #E1EAE8;
  --danger: #C0453A;
  --success: #2F8F5B;
  --font-d: "Fraunces", serif;
  --font-b: "Hind Siliguri", sans-serif;
  --font-m: "IBM Plex Mono", monospace;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-b);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
}
a { color: var(--teal-deep); text-decoration: none; }
img { max-width: 100%; display: block; }

/* bilingual toggle */
body[data-lang="bn"] .en { display: none; }
body[data-lang="en"] .bn { display: none; }

.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* NAV */
.nav { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,0.96); backdrop-filter: blur(6px); border-bottom: 1px solid var(--line); }
.nav-inner { max-width: 1180px; margin: 0 auto; padding: 14px 24px; display: flex; align-items: center; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand img { width: 38px; height: 38px; border-radius: 8px; }
.brand-name { font-family: var(--font-d); font-weight: 600; font-size: 17px; color: var(--teal-deep); line-height: 1.2; }
.brand-name small { display: block; font-family: var(--font-b); font-weight: 400; font-size: 11px; color: var(--muted); }
.links { display: flex; gap: 22px; margin-left: auto; }
.links a { font-size: 14.5px; font-weight: 500; color: var(--ink); padding: 6px 0; border-bottom: 2px solid transparent; }
.links a:hover, .links a.active { color: var(--teal-deep); border-bottom-color: var(--gold); }
.nav-actions { display: flex; align-items: center; gap: 14px; }
.lang-toggle { display: flex; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; }
.lang-toggle button { border: none; background: none; padding: 6px 14px; font-size: 12.5px; font-family: var(--font-b); cursor: pointer; color: var(--muted); }
.lang-toggle button.active { background: var(--teal-deep); color: #fff; }
.btn { display: inline-block; padding: 10px 20px; border-radius: 8px; font-weight: 600; font-size: 14px; cursor: pointer; border: none; }
.btn.join-btn { background: var(--gold); color: #1A1200; }
.btn.join-btn:hover { background: var(--gold-soft); }
.hamburger { display: none; background: none; border: none; font-size: 22px; cursor: pointer; margin-left: auto; }
@media (max-width: 900px) {
  .links { position: absolute; top: 100%; left: 0; right: 0; background: #fff; flex-direction: column; padding: 14px 24px; border-bottom: 1px solid var(--line); display: none; gap: 12px; }
  .links.open { display: flex; }
  .nav-actions { margin-left: auto; }
  .hamburger { display: block; }
  .brand-name small { display: none; }
}

/* HERO */
.hero { background: linear-gradient(180deg, var(--teal-light), #fff 70%); padding: 64px 0 70px; }
.hero-inner { max-width: 780px; margin: 0 auto; text-align: center; }
.eyebrow { display: inline-block; font-family: var(--font-m); font-size: 12px; color: var(--teal-deep); background: rgba(21,122,112,0.08); padding: 6px 14px; border-radius: 999px; margin-bottom: 18px; }
.hero h1 { font-family: var(--font-d); font-size: 40px; line-height: 1.25; margin: 0 0 18px; color: var(--teal-deep); }
.hero p.lead { font-size: 16.5px; color: var(--muted); margin-bottom: 30px; }
.hero-ctas { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn-primary { background: var(--teal-deep); color: #fff; padding: 13px 26px; border-radius: 9px; font-weight: 600; font-size: 15px; }
.btn-primary:hover { background: var(--teal); }
.btn-outline { border: 1.5px solid var(--teal-deep); color: var(--teal-deep); padding: 13px 26px; border-radius: 9px; font-weight: 600; font-size: 15px; }
.btn-outline:hover { background: var(--teal-light); }
@media (max-width: 700px) { .hero h1 { font-size: 28px; } }

/* STATS */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; max-width: 780px; margin: 44px auto 0; }
@media (max-width: 700px) { .stats { grid-template-columns: repeat(2, 1fr); } }
.stat { text-align: center; }
.stat .num { font-family: var(--font-d); font-size: 28px; color: var(--gold); font-weight: 600; }
.stat .lbl { font-size: 12.5px; color: var(--muted); margin-top: 2px; }

/* SECTIONS */
section.block { padding: 60px 0; }
section.block.alt { background: var(--bg-alt); }
.section-head { max-width: 640px; margin: 0 auto 36px; text-align: center; }
.section-head h2 { font-family: var(--font-d); font-size: 28px; color: var(--teal-deep); margin: 0 0 10px; }
.section-head p { color: var(--muted); font-size: 15px; margin: 0; }

/* CARD GRID */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
@media (max-width: 900px) { .grid-3 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px) { .grid-3 { grid-template-columns: 1fr; } }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
@media (max-width: 900px) { .grid-4 { grid-template-columns: 1fr 1fr; } }

.card { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 26px 24px; }
.card .step-no { font-family: var(--font-m); color: var(--gold); font-size: 13px; margin-bottom: 10px; }
.card h3 { font-family: var(--font-d); font-size: 17px; margin: 0 0 8px; color: var(--teal-deep); }
.card p { color: var(--muted); font-size: 14px; margin: 0; }

/* VALUES LIST */
.values-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; max-width: 700px; margin: 0 auto; }
@media (max-width: 600px) { .values-grid { grid-template-columns: 1fr; } }
.value-item { display: flex; align-items: center; gap: 12px; background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 14px 18px; font-weight: 500; }
.value-item .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--gold); flex-shrink: 0; }

/* TEAM */
.team-card { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 24px 20px; text-align: center; }
.team-card img { width: 96px; height: 96px; border-radius: 50%; object-fit: cover; margin: 0 auto 14px; background: var(--teal-light); }
.team-card h3 { font-family: var(--font-d); font-size: 16px; margin: 0 0 4px; color: var(--teal-deep); }
.team-card .role { font-size: 12.5px; color: var(--gold); font-weight: 600; margin-bottom: 8px; }
.team-card p.bio { font-size: 13px; color: var(--muted); margin: 0; }

/* CAREERS ROLE LIST */
.role-item { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 20px 22px; margin-bottom: 14px; display: flex; gap: 16px; align-items: flex-start; }
.role-item .badge { font-family: var(--font-m); font-size: 11px; background: var(--teal-light); color: var(--teal-deep); padding: 4px 10px; border-radius: 999px; white-space: nowrap; }
.role-item h3 { font-family: var(--font-d); font-size: 16px; margin: 0 0 6px; color: var(--teal-deep); }
.role-item p { color: var(--muted); font-size: 13.5px; margin: 0; }

/* FORMS */
form.contact-form, form.careers-form { max-width: 560px; margin: 0 auto; background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 30px 28px; }
form label { display: block; font-size: 13px; color: var(--muted); margin: 14px 0 6px; }
form label:first-of-type { margin-top: 0; }
form input, form select, form textarea {
  width: 100%; border: 1px solid var(--line); border-radius: 8px; padding: 11px 13px;
  font-family: var(--font-b); font-size: 14.5px; color: var(--ink); background: var(--bg-alt);
}
form input:focus, form select:focus, form textarea:focus { outline: none; border-color: var(--teal); }
form textarea { resize: vertical; min-height: 100px; }
form button.submit { margin-top: 18px; width: 100%; }
.form-msg { margin-top: 14px; font-size: 13.5px; text-align: center; }
.form-msg.ok { color: var(--success); }
.form-msg.err { color: var(--danger); }

/* CONTACT INFO */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; align-items: start; }
@media (max-width: 800px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-info-item { display: flex; gap: 14px; margin-bottom: 20px; }
.contact-info-item .ic { font-size: 20px; }
.contact-info-item h4 { margin: 0 0 4px; font-size: 14.5px; color: var(--teal-deep); }
.contact-info-item p { margin: 0; color: var(--muted); font-size: 14px; }

/* FOOTER */
.site-footer { background: var(--teal-deep); color: #DCEAE8; padding: 48px 0 20px; margin-top: 40px; }
.footer-inner { max-width: 1120px; margin: 0 auto; padding: 0 24px; display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 30px; }
@media (max-width: 700px) { .footer-inner { grid-template-columns: 1fr; } }
.footer-brand { font-family: var(--font-d); font-size: 20px; color: #fff; margin-bottom: 8px; }
.footer-heading { font-weight: 600; color: #fff; margin-bottom: 10px; font-size: 14px; }
.site-footer p { font-size: 13.5px; margin: 4px 0; color: #B9D3D0; }
.site-footer a { color: #DCEAE8; }
.footer-bottom { text-align: center; margin-top: 30px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,0.12); font-size: 12px; color: #9BBAB6; }

/* generic content section (about page long text) */
.prose { max-width: 720px; margin: 0 auto; }
.prose p { color: var(--ink); font-size: 15.5px; margin-bottom: 18px; }
.prose h2 { font-family: var(--font-d); color: var(--teal-deep); font-size: 22px; margin: 34px 0 14px; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
@media (max-width: 800px) { .two-col { grid-template-columns: 1fr; } }
.mv-card { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 26px; }
.mv-card h3 { font-family: var(--font-d); color: var(--teal-deep); margin: 0 0 10px; }
.mv-card p { color: var(--muted); margin: 0; font-size: 14.5px; }

.empty-note { text-align: center; color: var(--muted); font-size: 14px; padding: 20px; }

/* DIRECTOR MESSAGES */
.director-msg {
  display: grid; grid-template-columns: 160px 1fr; gap: 30px; align-items: start;
  max-width: 820px; margin: 0 auto 40px; padding-bottom: 40px; border-bottom: 1px solid var(--line);
}
.director-msg:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
@media (max-width: 620px) { .director-msg { grid-template-columns: 1fr; text-align: center; } }
.director-msg-photo img, .director-msg-photo-placeholder {
  width: 140px; height: 140px; border-radius: 50%; object-fit: cover; background: var(--teal-light);
  border: 3px solid #fff; box-shadow: 0 4px 16px rgba(11,79,73,0.12);
}
@media (max-width: 620px) { .director-msg-photo img, .director-msg-photo-placeholder { margin: 0 auto; } }
.director-msg-text { font-family: var(--font-d); font-size: 16.5px; line-height: 1.75; color: var(--ink); margin: 0 0 14px; }
.director-msg-name { font-weight: 700; color: var(--teal-deep); font-size: 15px; }
.director-msg-title { color: var(--gold); font-size: 12.5px; font-weight: 600; margin-top: 2px; }