:root {
  --green: #006a4e;
  --green-dark: #003f2f;
  --green-soft: #e6f5ef;
  --red: #f42a41;
  --red-dark: #c9182c;
  --cream: #fff8ef;
  --white: #ffffff;
  --ink: #071913;
  --muted: #536861;
  --line: rgba(0, 106, 78, 0.16);
  --shadow: 0 24px 70px rgba(0, 63, 47, 0.2);
  --radius: 30px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Anek Bangla", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 18% 8%, rgba(244, 42, 65, 0.18), transparent 22%),
    radial-gradient(circle at 90% 18%, rgba(0, 106, 78, 0.18), transparent 28%),
    linear-gradient(90deg, rgba(0, 106, 78, 0.08) 0 18%, transparent 18% 82%, rgba(0, 106, 78, 0.08) 82% 100%),
    var(--cream);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.18;
  background-image:
    linear-gradient(45deg, rgba(0, 106, 78, 0.08) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(0, 106, 78, 0.08) 25%, transparent 25%);
  background-size: 34px 34px;
  z-index: -1;
}

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

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

button,
input,
select {
  font: inherit;
}

.site-header,
.hero,
.section,
.footer {
  width: min(calc(100% - 2rem), 1180px);
  margin: 0 auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  color: var(--green-dark);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.brand img,
.footer img {
  width: 68px;
  height: 68px;
  object-fit: contain;
  padding: 0.35rem;
  border-radius: 20px;
  background: var(--white);
  box-shadow: 0 14px 30px rgba(0, 106, 78, 0.18);
}

.nav {
  display: none;
  gap: 1rem;
  color: var(--green-dark);
  font-weight: 800;
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--red);
}

.hero {
  display: grid;
  gap: 2rem;
  align-items: center;
  min-height: calc(100vh - 100px);
  padding: 2rem 0 4rem;
}

.eyebrow {
  margin: 0 0 0.85rem;
  color: var(--red);
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  color: var(--green-dark);
  line-height: 0.98;
  letter-spacing: -0.035em;
  font-weight: 800;
}

h1 {
  max-width: 10ch;
  font-size: clamp(3.8rem, 13vw, 8.6rem);
}

h2 {
  font-size: clamp(2.4rem, 7vw, 5rem);
}

.lead,
.english-line,
.about-grid p,
.impact-copy p,
.event-card p,
.join-card li,
.footer p {
  color: var(--muted);
  line-height: 1.72;
  font-size: 1.08rem;
}

.lead {
  max-width: 44rem;
  color: #213f35;
  font-size: 1.2rem;
}

.english-line {
  max-width: 38rem;
  padding-left: 1rem;
  border-left: 5px solid var(--red);
  color: var(--green-dark);
  font-weight: 700;
}

.actions,
.about-grid,
.join-layout,
.event-grid {
  display: grid;
  gap: 1rem;
}

.actions {
  grid-template-columns: 1fr;
  max-width: 28rem;
  margin-top: 1.6rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  border: 0;
  border-radius: 999px;
  padding: 0.9rem 1.35rem;
  font-weight: 800;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(0, 106, 78, 0.22);
}

.btn-primary {
  color: var(--white);
  background: linear-gradient(135deg, var(--green), var(--green-dark));
}

.btn-secondary {
  color: var(--green-dark);
  background: var(--white);
  border: 2px solid var(--red);
}

.btn-dark {
  color: var(--white);
  background: var(--green-dark);
}

.hero-visual {
  position: relative;
  padding: 1.2rem;
  border-radius: 40px;
  background:
    radial-gradient(circle at 42% 48%, var(--red) 0 22%, transparent 23%),
    linear-gradient(135deg, var(--green), var(--green-dark));
  box-shadow: var(--shadow);
}

.hero-visual img {
  position: relative;
  z-index: 1;
  width: min(100%, 560px);
  margin: 0 auto;
  border-radius: 28px;
  background: var(--white);
}

.flag-mark {
  position: absolute;
  right: 1.2rem;
  bottom: 1.2rem;
  width: 92px;
  height: 92px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: inset 0 0 0 10px rgba(255, 255, 255, 0.18);
}

.section {
  padding: 4.5rem 0;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 2rem;
}

.about-grid {
  grid-template-columns: 1fr;
}

.about-grid article,
.join-form,
.join-card,
.event-card,
.updates-box {
  padding: 1.4rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow);
}

.about-grid h3,
.join-card h3,
.event-card h3 {
  margin: 0 0 0.65rem;
  color: var(--green-dark);
  font-size: 1.6rem;
}

.about-grid p,
.event-card p {
  margin: 0;
}

.impact {
  width: min(calc(100% - 2rem), 1180px);
  margin: 0 auto;
  overflow: hidden;
  border-radius: 42px;
  background: var(--green-dark);
  box-shadow: var(--shadow);
}

.impact-copy {
  padding: 2rem;
  background: var(--green-dark);
}

.impact-copy h2,
.impact-copy p {
  color: var(--white);
}

.impact-copy .eyebrow {
  color: #ffcf55;
}

.impact-copy p {
  color: rgba(255, 255, 255, 0.86);
  max-width: 60rem;
}

.impact-image {
  width: min(100%, 760px);
  height: clamp(280px, 42vw, 480px);
  margin: 0 auto;
  background:
    linear-gradient(180deg, rgba(0, 63, 47, 0.05), rgba(0, 63, 47, 0.72)),
    url("assets/images/dsav8.png") center/contain no-repeat,
    #052d22;
}

.join-layout {
  align-items: start;
}

.join-form {
  display: grid;
  gap: 1rem;
}

.hubspot-embed {
  min-height: 420px;
  color: var(--ink);
  background: var(--white);
}

.hubspot-embed .hs-form-frame,
.hubspot-embed iframe {
  width: 100%;
  min-height: 420px;
  border: 0;
  background: var(--white);
}

label {
  display: grid;
  gap: 0.45rem;
  color: var(--green-dark);
  font-weight: 800;
}

input,
select {
  width: 100%;
  min-height: 52px;
  padding: 0.9rem 1rem;
  border: 2px solid rgba(0, 106, 78, 0.18);
  border-radius: 16px;
  background: #f7fffb;
  color: var(--ink);
  outline: none;
}

input:focus,
select:focus {
  border-color: var(--red);
  box-shadow: 0 0 0 4px rgba(244, 42, 65, 0.16);
}

.form-status {
  min-height: 1.4rem;
  margin: 0;
  color: var(--green);
  font-weight: 800;
}

.join-card ul {
  display: grid;
  gap: 0.75rem;
  padding-left: 1.2rem;
}

.event-grid {
  grid-template-columns: 1fr;
}

.event-card span {
  display: inline-flex;
  margin-bottom: 1rem;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  color: var(--white);
  background: var(--red);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

.updates-box {
  display: grid;
  gap: 1rem;
  color: var(--white);
  background:
    radial-gradient(circle at 26% 50%, var(--red) 0 15%, transparent 16%),
    var(--green);
}

.updates-box h2,
.updates-box .eyebrow {
  color: var(--white);
}

.updates-form {
  display: grid;
  gap: 0.8rem;
}

.footer {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--line);
}

.footer strong {
  color: var(--green-dark);
}

.footer p {
  margin: 0.25rem 0 0;
  font-size: 0.92rem;
}

@media (min-width: 720px) {
  .nav {
    display: flex;
  }

  .hero,
  .join-layout {
    grid-template-columns: minmax(0, 1fr) minmax(380px, 0.95fr);
  }

  .actions,
  .about-grid,
  .event-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .actions {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .updates-box {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
  }
}

@media (min-width: 1040px) {
  .hero-copy h1 {
    font-size: 7.6rem;
  }

  .impact-copy {
    padding: 3.2rem 4rem;
  }
}