body, html {
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  height: 100%;
}

/* Navigation */
nav {
  background: rgba(0, 0, 0, 0.6);
  padding: 15px;
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
}

nav a {
  color: white;
  margin-right: 20px;
  text-decoration: none;
  font-weight: bold;
  transition: color 0.3s ease;
}

nav a:hover {
  color: #ffd700; /* golden hover effect */
}

/* Hero Section */
.hero {
  background: url('https://images.unsplash.com/photo-1600891964599-f61ba0e24092?ixlib=rb-4.0.3&auto=format&fit=crop&w=1600&q=80') 
              no-repeat center center/cover;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  color: white;
}

.hero-content {
  background: rgba(0, 0, 0, 0.5);
  padding: 40px;
  border-radius: 15px;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 10px;
}

.hero h1 span {
  color: #ffd700;
}

.hero p {
  font-size: 1.3rem;
}

/* Chat Section */
.chat-section {
  background: #f2f7fa;
  padding: 50px 20px;
  text-align: center;
}

.chat-section h2 {
  margin-bottom: 20px;
  color: #333;
}

#chat-box {
  margin: auto;
  border-radius: 20px;
  background: white;
  padding: 20px;
  width: 400px;
  max-width: 90%;
  box-shadow: 0 6px 18px rgba(0,0,0,0.15);
}

#messages {
  height: 220px;
  overflow-y: auto;
  border-radius: 10px;
  background: #fafafa;
  padding: 12px;
  margin-bottom: 12px;
  font-size: 14px;
}

/* Differentiate user & bot messages */
.user-msg {
  text-align: right;
  margin: 5px 0;
  color: #222;
  font-weight: bold;
}

.bot-msg {
  text-align: left;
  margin: 5px 0;
  color: #444;
  font-style: italic;
}

.input-area {
  display: flex;
  gap: 5px;
}

.input-area input {
  flex: 1;
  padding: 8px;
  border: 1px solid #ccc;
  border-radius: 10px;
}

.input-area button {
  padding: 8px 12px;
  border: none;
  background: #ffd700;
  color: black;
  font-weight: bold;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.3s ease;
}

.input-area button:hover {
  background: #e6c200;
}

/* Donation Centres Section */
.donation-section {
  padding: 80px 20px;
  text-align: center;
}

.donation-section h1 {
  margin-bottom: 30px;
}



/* Recipe Section */
.recipe-section {
  padding: 2rem;
  background: #fff;
  max-width: 800px;
  margin: 2rem auto;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  text-align: center;
}
.recipe-card {
  background: #fafafa;
  padding: 1rem;
  border-radius: 10px;
  margin-top: 1rem;
}

/* Tips Section */
.tips-section {
  padding: 2rem;
  background: #f0f4f8;
  text-align: center;
}
.tips-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}
.tip {
  background: #fff;
  padding: 1rem;
  border-radius: 10px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

/* Impact Section */
.impact-section {
  padding: 2rem;
  text-align: center;
  background: #fff;
}
.impact-grid {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}
.impact-box {
  background: #f0f4f8;
  padding: 1rem 2rem;
  border-radius: 10px;
  min-width: 120px;
}
.impact-box h3 {
  font-size: 2rem;
  color: #2c3e50;
}

/* Join Section */
.join-section {
  padding: 2rem;
  background: #f0f4f8;
  text-align: center;
}
.join-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 400px;
  margin: 1rem auto;
}
.join-form input {
  padding: 0.6rem;
  border: 1px solid #ccc;
  border-radius: 6px;
}
.join-form button {
  background: #2c3e50;
  color: white;
  border: none;
  padding: 0.6rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.3s;
}
.join-form button:hover {
  background: #34495e;
}

/* Footer */
footer {
  background: #34495e;
  color: white;
  text-align: center;
  padding: 15px 0;
  margin-top: 40px;
}