:root {
  --green-dark: #0b5b3f;
  --green: #12855f;
  --green-light: #e8f5ee;
  --gold: #d4a017;
  --text-dark: #1a231f;
  --text-muted: #5a675f;
  --white: #ffffff;
  --shadow: 0 10px 25px rgba(11, 91, 63, 0.12);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Poppins', sans-serif;
  color: var(--text-dark);
  line-height: 1.6;
  background: var(--white);
}

.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 20px;
}

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

h1, h2, h3 {
  font-weight: 700;
  line-height: 1.25;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.25s ease;
  cursor: pointer;
}

.btn-primary {
  background: var(--green);
  color: var(--white);
  box-shadow: var(--shadow);
}

.btn-primary:hover {
  background: var(--green-dark);
  transform: translateY(-2px);
}

.btn-outline {
  border: 2px solid var(--green);
  color: var(--green);
  background: transparent;
}

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

.btn-lg {
  padding: 16px 36px;
  font-size: 1.05rem;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(6px);
  z-index: 1000;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
}

.logo {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--green-dark);
}

.logo span {
  color: var(--gold);
}

.nav {
  display: flex;
  gap: 28px;
}

.nav a {
  font-weight: 500;
  color: var(--text-dark);
  position: relative;
}

.nav a:hover {
  color: var(--green);
}

.nav-donate {
  padding: 10px 22px;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
}

.menu-toggle span {
  width: 26px;
  height: 3px;
  background: var(--green-dark);
  border-radius: 2px;
}

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--green-light), #ffffff);
  padding: 100px 0 80px;
}

.hero-content {
  max-width: 760px;
  text-align: center;
  margin: 0 auto;
}

.eyebrow {
  color: var(--gold);
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  font-size: 0.85rem;
  margin-bottom: 14px;
}

.hero h1 {
  font-size: 2.8rem;
  color: var(--green-dark);
  margin-bottom: 20px;
}

.hero-text {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* About */
.about {
  padding: 80px 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 50px;
  align-items: center;
}

.about-text h2 {
  color: var(--green-dark);
  font-size: 2rem;
  margin-bottom: 18px;
}

.about-text p {
  color: var(--text-muted);
  margin-bottom: 16px;
}

.about-stats {
  display: grid;
  gap: 20px;
}

.stat-card {
  background: var(--green-light);
  border-radius: 14px;
  padding: 24px;
  text-align: center;
}

.stat-card h3 {
  color: var(--green-dark);
  font-size: 2rem;
}

.stat-card p {
  color: var(--text-muted);
  font-weight: 500;
}

/* Mission */
.mission {
  background: var(--green-dark);
  padding: 70px 0;
}

.mission-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.mission-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 14px;
  padding: 30px;
  color: var(--white);
}

.mission-card h3 {
  color: var(--gold);
  margin-bottom: 12px;
  font-size: 1.2rem;
}

.mission-card p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.95rem;
}

/* Causes */
.causes {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  color: var(--green-dark);
  font-size: 2rem;
  margin-bottom: 40px;
}

.causes-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.cause-card {
  background: var(--white);
  border: 1px solid #eaeaea;
  border-radius: 14px;
  padding: 26px 20px;
  text-align: center;
  transition: all 0.25s ease;
}

.cause-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
  border-color: transparent;
}

.cause-card h3 {
  color: var(--green-dark);
  font-size: 1.1rem;
  margin-bottom: 10px;
}

.cause-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
}

/* Donate CTA */
.donate-cta {
  background: linear-gradient(135deg, var(--green), var(--green-dark));
  padding: 70px 0;
  text-align: center;
  color: var(--white);
}

.donate-cta h2 {
  font-size: 2rem;
  margin-bottom: 12px;
}

.donate-cta p {
  margin-bottom: 26px;
  color: rgba(255, 255, 255, 0.9);
}

.donate-cta .btn-primary {
  background: var(--gold);
  color: var(--text-dark);
}

.donate-cta .btn-primary:hover {
  background: #b98812;
}

/* Contact */
.contact {
  padding: 80px 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: center;
}

.contact h2 {
  color: var(--green-dark);
  font-size: 2rem;
  margin-bottom: 14px;
}

.contact p {
  color: var(--text-muted);
  margin-bottom: 18px;
}

.contact-list li {
  list-style: none;
  margin-bottom: 10px;
  font-size: 0.98rem;
}

.contact-list a {
  color: var(--green);
  font-weight: 600;
}

.contact-card {
  background: var(--green-light);
  border-radius: 16px;
  padding: 34px;
  text-align: center;
}

.contact-card h3 {
  color: var(--green-dark);
  margin-bottom: 10px;
}

.contact-card p {
  color: var(--text-muted);
  margin-bottom: 20px;
}

/* Footer */
.footer {
  background: var(--green-dark);
  color: rgba(255, 255, 255, 0.85);
  padding: 26px 0;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.9rem;
}

/* Floating WhatsApp Button */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #25d366;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
  z-index: 999;
  transition: transform 0.25s ease;
}

.whatsapp-float:hover {
  transform: scale(1.08);
}

/* Responsive */
@media (max-width: 900px) {
  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

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

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

@media (max-width: 720px) {
  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    align-items: center;
    padding: 20px 0;
    gap: 18px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
    display: none;
  }

  .nav.open {
    display: flex;
  }

  .nav-donate {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .hero h1 {
    font-size: 2.1rem;
  }

  .mission-grid,
  .causes-grid {
    grid-template-columns: 1fr;
  }
}