/* ===================================================================
   BiOversiz — shared stylesheet
   Palette softened: lighter backgrounds, gentler contrast.
=================================================================== */
:root {
  --green:      #8DC63F;
  --green-dark: #6fa72e;
  --green-tint: #eef6e1;
  --navy:       #143a4f;   /* softened from #0E2A3B */
  --navy-deep:  #0f2c3c;
  --navy-soft:  #1d4b63;
  --sky:        #7FC7DE;
  --yellow:     #E2E94B;
  --bg:         #f6f9f7;   /* very light, faint green-grey */
  --bg-alt:     #ffffff;
  --slate:      #43525b;
  --line:       rgba(20, 58, 79, 0.10);
  --white:      #ffffff;
  --radius:     16px;
  --shadow:     0 14px 34px -22px rgba(20, 58, 79, 0.30);
  --maxw:       1140px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  color: var(--slate);
  background: var(--white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: "Poppins", "Inter", sans-serif; color: var(--navy); line-height: 1.18; margin: 0; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }
.eyebrow {
  font-family: "Poppins", sans-serif; text-transform: uppercase;
  letter-spacing: 0.14em; font-size: 0.72rem; font-weight: 600;
  color: var(--green-dark); margin: 0 0 14px;
}
.accent { color: var(--green); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block; font-family: "Poppins", sans-serif; font-weight: 600;
  font-size: 0.95rem; padding: 13px 28px; border-radius: 999px;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  cursor: pointer;
}
.btn-primary { background: var(--green); color: var(--navy-deep); box-shadow: 0 10px 20px -12px rgba(141,198,63,0.9); }
.btn-primary:hover { background: var(--green-dark); color: #fff; transform: translateY(-2px); }
.btn-ghost { border: 1.5px solid rgba(255,255,255,0.55); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,0.12); transform: translateY(-2px); }
.btn-ghost-dark { border: 1.5px solid rgba(20,58,79,0.22); color: var(--navy); }
.btn-ghost-dark:hover { background: rgba(20,58,79,0.05); transform: translateY(-2px); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.9);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 74px; gap: 18px; }
.brand { display: flex; align-items: center; gap: 11px; }
.brand img, .brand svg { width: 38px; height: 42px; }
.brand-name { font-family: "Poppins", sans-serif; font-weight: 700; font-size: 1.3rem; color: var(--navy); letter-spacing: -0.01em; }
.brand-accent { color: var(--green); }
.main-nav { display: flex; align-items: center; gap: 26px; }
.main-nav a.navlink { font-family: "Poppins", sans-serif; font-weight: 500; font-size: 0.93rem; color: var(--navy); position: relative; }
.main-nav a.navlink:hover { color: var(--green-dark); }
.main-nav a.navlink::after { content: ""; position: absolute; left: 0; bottom: -6px; width: 0; height: 2px; background: var(--green); transition: width .2s ease; }
.main-nav a.navlink:hover::after, .main-nav a.navlink.active::after { width: 100%; }
.main-nav a.navlink.active { color: var(--green-dark); }
.nav-cta { background: var(--navy); color: #fff !important; padding: 9px 18px; border-radius: 999px; font-family: "Poppins", sans-serif; font-weight: 500; font-size: 0.9rem; }
.nav-cta:hover { background: var(--navy-soft); }
.lang-toggle { display: flex; align-items: center; gap: 4px; font-family: "Poppins", sans-serif; font-size: 0.85rem; font-weight: 600; }
.lang-toggle a { color: var(--slate); padding: 2px 4px; }
.lang-toggle a.current { color: var(--green-dark); }
.lang-toggle span { color: var(--line); }

/* ---------- Hero (home) ---------- */
.hero { position: relative; color: #fff; overflow: hidden; background: var(--navy-deep); }
.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(1200px 560px at 80% -10%, rgba(127,199,222,0.34), transparent 60%),
    radial-gradient(900px 520px at 8% 115%, rgba(141,198,63,0.24), transparent 60%),
    linear-gradient(135deg, #143a4f 0%, #1c4a63 55%, #102f40 100%);
}
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.09) 1.5px, transparent 1.6px);
  background-size: 30px 30px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,0.55), transparent 75%);
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.55), transparent 75%);
}
/* Optional hero photo: drop assets/hero.jpg in and it appears automatically,
   with a dark overlay for text legibility. If the file is absent, the
   gradient hero-bg shows through unharmed. */
.hero-photo { position: absolute; inset: 0; }
.hero.has-photo .hero-photo {
  background-image:
    linear-gradient(120deg, rgba(15,44,60,0.82) 0%, rgba(20,58,79,0.55) 70%),
    url('assets/hero.jpg');
  background-size: cover;
  background-position: center;
}
.hero-inner { position: relative; padding: 92px 28px 100px; max-width: 880px; }
.hero .eyebrow { color: #b6e479; }
.hero-title { color: #fff; font-size: clamp(2.1rem, 5vw, 3.6rem); font-weight: 700; letter-spacing: -0.02em; }
.hero-sub { margin: 22px 0 34px; font-size: clamp(1.04rem, 1.6vw, 1.2rem); color: rgba(255,255,255,0.88); max-width: 640px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 15px; }

/* ---------- Page header (inner pages) ---------- */
.page-header { background: var(--bg); border-bottom: 1px solid var(--line); }
.page-header .container { padding-top: 64px; padding-bottom: 60px; max-width: 820px; }
.page-header h1 { font-size: clamp(1.9rem, 4vw, 3rem); letter-spacing: -0.02em; }
.page-header p { margin: 16px 0 0; font-size: 1.12rem; color: var(--slate); }

/* ---------- Trust strip ---------- */
.trust { background: var(--bg); border-bottom: 1px solid var(--line); }
.trust-inner { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; padding: 28px; }
.trust-item { display: flex; flex-direction: column; gap: 2px; text-align: center; }
.trust-num { font-family: "Poppins", sans-serif; font-weight: 700; font-size: 1.45rem; color: var(--navy); }
.trust-label { font-size: 0.85rem; color: var(--slate); }

/* ---------- About / mission ---------- */
.about { padding: 92px 0; background: var(--bg-alt); }
.about-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: center; }
.about-grid h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); margin-bottom: 18px; }
.about-grid p { margin: 0 0 16px; }
.values { list-style: none; margin: 8px 0 0; padding: 0; display: grid; gap: 16px; }
.values li { display: flex; gap: 14px; align-items: flex-start; }
.values .v-ico { flex: none; width: 40px; height: 40px; border-radius: 11px; background: var(--green-tint); color: var(--green-dark); display: grid; place-items: center; }
.values h3 { font-size: 1.05rem; margin-bottom: 2px; }
.values p { margin: 0; font-size: 0.96rem; }

/* ---------- Section heading ---------- */
.section { padding: 92px 0; }
.section.tint { background: var(--bg); }
.section-head { max-width: 680px; margin: 0 auto 52px; text-align: center; }
.section-head h2 { font-size: clamp(1.8rem, 3.2vw, 2.5rem); margin-bottom: 14px; }
.section-lead { font-size: 1.06rem; color: var(--slate); margin: 0; }

/* ---------- Cards (activities / partners) ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.cards.two { grid-template-columns: repeat(2, 1fr); }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 34px 28px; box-shadow: var(--shadow); transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
.card:hover { transform: translateY(-5px); border-color: rgba(141,198,63,0.5); box-shadow: 0 24px 46px -26px rgba(20,58,79,0.4); }
.card-icon { width: 54px; height: 54px; display: grid; place-items: center; border-radius: 14px; background: var(--green-tint); color: var(--green-dark); margin-bottom: 20px; }
.card h3 { font-size: 1.28rem; margin-bottom: 10px; }
.card p { margin: 0 0 18px; }
.card-link { font-family: "Poppins", sans-serif; font-weight: 600; font-size: 0.93rem; color: var(--green-dark); }
.card-link span { transition: margin-left .15s ease; }
.card-link:hover span { margin-left: 5px; }

/* ---------- Activity detail rows ---------- */
.detail { display: grid; grid-template-columns: 64px 1fr; gap: 26px; padding: 38px 0; border-bottom: 1px solid var(--line); }
.detail:last-child { border-bottom: 0; }
.detail .d-ico { width: 56px; height: 56px; border-radius: 14px; background: var(--green-tint); color: var(--green-dark); display: grid; place-items: center; }
.detail h3 { font-size: 1.45rem; margin-bottom: 10px; }
.detail ul { margin: 14px 0 0; padding-left: 18px; }
.detail li { margin-bottom: 6px; }

/* ---------- Projects grid ---------- */
.proj-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.proj { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: transform .2s ease; }
.proj:hover { transform: translateY(-5px); }
.proj-top { height: 7px; background: linear-gradient(90deg, var(--green), var(--sky)); }
.proj-body { padding: 26px 24px; }
.tag { display: inline-block; font-family: "Poppins", sans-serif; font-size: 0.72rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; padding: 4px 11px; border-radius: 999px; background: var(--green-tint); color: var(--green-dark); margin-bottom: 14px; }
.tag.blue { background: #e2f1f7; color: #2c7d9c; }
.proj h3 { font-size: 1.18rem; margin-bottom: 8px; }
.proj p { margin: 0; font-size: 0.96rem; }

/* ---------- News list ---------- */
.news-list { display: grid; gap: 20px; max-width: 820px; margin: 0 auto; }
.news-item { display: grid; grid-template-columns: 120px 1fr; gap: 26px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 28px; box-shadow: var(--shadow); }
.news-date { font-family: "Poppins", sans-serif; font-weight: 600; color: var(--green-dark); font-size: 0.9rem; }
.news-item h3 { font-size: 1.18rem; margin-bottom: 6px; }
.news-item p { margin: 0; font-size: 0.97rem; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 50px; }
.contact-info h3 { font-size: 1.05rem; margin: 22px 0 4px; }
.contact-info p { margin: 0; }
.contact-info a { color: var(--green-dark); }
.form { display: grid; gap: 16px; }
.form label { font-family: "Poppins", sans-serif; font-weight: 500; font-size: 0.88rem; color: var(--navy); display: block; margin-bottom: 6px; }
.form input, .form textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px;
  font-family: inherit; font-size: 0.97rem; color: var(--slate); background: #fff;
}
.form input:focus, .form textarea:focus { outline: 2px solid rgba(141,198,63,0.5); border-color: var(--green); }
.form textarea { min-height: 130px; resize: vertical; }

/* ---------- Closing CTA ---------- */
.cta { background: radial-gradient(700px 400px at 85% 20%, rgba(127,199,222,0.2), transparent 60%), linear-gradient(135deg, #143a4f, #1d4b63); color: #fff; padding: 88px 0; }
.cta-inner { max-width: 720px; margin: 0 auto; text-align: center; }
.cta h2 { color: #fff; font-size: clamp(1.8rem, 3.4vw, 2.6rem); margin-bottom: 16px; }
.cta p { color: rgba(255,255,255,0.86); font-size: 1.08rem; margin: 0 0 32px; }
.cta .hero-actions { justify-content: center; }
.cta .btn-ghost-dark { border-color: rgba(255,255,255,0.5); color: #fff; }
.cta .btn-ghost-dark:hover { background: rgba(255,255,255,0.12); }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-deep); color: rgba(255,255,255,0.72); padding: 58px 0 24px; }
.footer-inner { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 40px; padding-bottom: 34px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.footer-brand .brand-name { color: #fff; font-size: 1.35rem; }
.footer-brand p { margin: 13px 0 0; max-width: 360px; font-size: 0.94rem; }
.footer-col h4 { font-family: "Poppins", sans-serif; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.1em; color: rgba(255,255,255,0.5); margin: 0 0 14px; }
.footer-col a { display: block; font-size: 0.95rem; margin-bottom: 10px; }
.footer-col a:hover { color: var(--green); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; padding-top: 20px; font-size: 0.85rem; }
.social { display: flex; gap: 10px; }
.social a { width: 33px; height: 33px; display: grid; place-items: center; border-radius: 50%; border: 1px solid rgba(255,255,255,0.25); font-size: 0.78rem; text-transform: uppercase; }
.social a:hover { background: var(--green); color: var(--navy-deep); border-color: var(--green); }

/* ---------- Form success banner ---------- */
.sent-banner { background: var(--green); color: var(--navy-deep); text-align: center; padding: 14px 20px; font-family: "Poppins", sans-serif; font-weight: 600; font-size: 0.98rem; }

/* ---------- Responsive ---------- */
@media (max-width: 880px) {
  .main-nav { gap: 14px; }
  .main-nav a.navlink { display: none; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 34px; }
  .cards, .cards.two, .proj-grid { grid-template-columns: 1fr; }
  .trust-inner { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .footer-inner { grid-template-columns: 1fr; gap: 28px; }
  .news-item { grid-template-columns: 1fr; gap: 8px; }
  .detail { grid-template-columns: 1fr; gap: 14px; }
  .hero-inner { padding: 68px 24px 78px; }
}