:root {
  --primary-color: #ff6f61;
  --secondary-color: #4a4a4a;
  --background-color-light: #f9f9f9;
  --text-color-light: #333333;
  --background-color-dark: #1e1e1e;
  --text-color-dark: #f1f1f1;
  --card-bg-light: #ffffff;
  --card-bg-dark: #2d2d2d;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  margin: 0;
  background-color: var(--background-color-light);
  color: var(--text-color-light);
  transition: background-color 0.3s, color 0.3s;
}

body.dark-mode {
  background-color: var(--background-color-dark);
  color: var(--text-color-dark);
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background-color: var(--card-bg-light);
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

body.dark-mode header {
    background-color: var(--card-bg-dark);
}

main {
  padding: 2rem;
  max-width: 960px;
  margin: 0 auto;
}

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

.hero img {
  max-width: 100%;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.hero h2 {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-top: 1rem;
}

.donation {
  background-color: var(--card-bg-light);
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  text-align: center;
}

body.dark-mode .donation {
    background-color: var(--card-bg-dark);
}

.progress-bar {
  width: 100%;
  background-color: #e0e0e0;
  border-radius: 5px;
  margin: 1rem 0;
}

.progress {
  height: 20px;
  width: 0%;
  background-color: var(--primary-color);
  border-radius: 5px;
  transition: width 0.5s ease-in-out;
}

.donation-info {
  margin: 1rem 0;
  font-size: 1.2rem;
}

.donation-buttons button, .donation-buttons input {
  margin: 0.5rem;
  padding: 1rem 1.5rem;
  border: none;
  border-radius: 5px;
  font-size: 1rem;
  cursor: pointer;
}

.donation-buttons .donation-amount {
    background-color: #f0f0f0;
}

body.dark-mode .donation-buttons .donation-amount {
    background-color: #4a4a4a;
    color: var(--text-color-dark)
}

#donate-btn {
  background-color: var(--primary-color);
  color: white;
  font-weight: bold;
}

footer {
  text-align: center;
  padding: 1rem;
  margin-top: 2rem;
  color: #888;
}

#theme-toggle {
  padding: 10px 15px;
  border: 1px solid #ccc;
  border-radius: 5px;
  cursor: pointer;
}