/* Base & Typography */
:root {
  --primary: #1e3a8a;
  --primary-dark: #1e293b;
  --secondary: #d97706;
  --accent: #2563eb;
  --text-main: #334155;
  --text-light: #64748b;
  --bg-light: #f8fafc;
  --white: #ffffff;
  --font-main: 'Poppins', sans-serif;
  --transition: all 0.3s ease;
}

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

body {
  font-family: var(--font-main);
  color: var(--text-main);
  background-color: var(--bg-light);
  line-height: 1.6;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

ul {
  list-style: none;
}

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

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

/* Header & Nav */
header {
  background-color: var(--white);
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 0;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
}

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

.nav-menu {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.nav-link {
  font-weight: 5rem;
  color: var(--text-main);
  font-size: 0.95rem;
}

.nav-link:hover, .nav-link.active {
  color: var(--accent);
}

.btn-donate {
  background-color: var(--secondary);
  color: var(--white);
  padding: 0.6rem 1.2rem;
  border-radius: 50px;
  font-weight: 600;
}

.btn-donate:hover {
  background-color: #b45309;
}

.hamburger {
  display: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
}

.bar {
  width: 25px;
  height: 3px;
  background-color: var(--primary);
  border-radius: 2px;
}

/* Hero Section */
.hero {
  background: linear-gradient(rgba(30, 58, 138, 0.8), rgba(30, 41, 59, 0.8)), url('https://images.unsplash.com/photo-1488521787991-ed7bbaae773c?auto=format&fit=crop&w=1350&q=80') center/cover no-repeat;
  color: var(--white);
  padding: 6rem 0;
  text-align: center;
}

.hero h1 {
  font-size: 2.8rem;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.2rem;
  max-width: 700px;
  margin: 0 auto 2rem;
}

.hero-btns {
  display: flex;
  justify-content: center;
  gap: 1rem;
}

.btn-primary {
  background: var(--accent);
  color: var(--white);
  padding: 0.8rem 1.8rem;
  border-radius: 6px;
  font-weight: 600;
}

.btn-secondary {
  background: transparent;
  border: 2px solid var(--white);
  color: var(--white);
  padding: 0.8rem 1.8rem;
  border-radius: 6px;
  font-weight: 600;
}

/* Stats Section */
.stats {
  padding: 4rem 0;
  background: var(--white);
}

.stats-grid {
  display: flex;
  justify-content: space-around;
  text-align: center;
  flex-wrap: wrap;
  gap: 2rem;
}

.stat-item h3 {
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

/* Content Sections */
.section {
  padding: 4rem 0;
}

.section-title {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title h2 {
  font-size: 2.2rem;
  color: var(--primary);
}

.section-title p {
  color: var(--text-light);
}

/* Cards Grid */
.cards-grid {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.card {
  background: var(--white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 6px rgba(0,0,0,0.05);
  flex: 1;
  min-width: 280px;
}

.card-body {
  padding: 1.5rem;
}

.card-title {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
  color: var(--primary);
}

/* WhatsApp Floating Button */
.whatsapp-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: #25d366;
  color: white;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 30px;
  box-shadow: 2px 2px 10px rgba(0,0,0,0.2);
  z-index: 1000;
}

/* Footer */
footer {
  background: var(--primary-dark);
  color: var(--white);
  padding: 3rem 0 1rem;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-col {
  flex: 1;
  min-width: 200px;
}

.footer-col h4 {
  margin-bottom: 1rem;
  color: var(--secondary);
}

.footer-bottom {
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 1rem;
  font-size: 0.85rem;
  color: var(--text-light);
}