/* Container and layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Header */
.header {
  background-color: #f8f9fa;
  padding: 1rem 0;
  border-bottom: 1px solid #ddd;
}

.logo {
  font-size: 1.8rem;
  font-weight: 700;
  color: #222;
  margin: 0;
}


/* Hero Section */
.hero-section {
  padding: 2rem 0;
  background-color: #eef2f7;
  margin-bottom: 2rem;
}

.hero-section h2 {
  font-size: 2rem;
  margin-bottom: 0.5em;
  color: #222;
  font-weight: 700;
}

.hero-section p {
  font-size: 1.15rem;
  color: #555;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Notes preview block */
.notes-preview {
  max-width: 900px;
  margin: 2em auto 4em auto;
  padding: 2em;
  background: #fff;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  border-radius: 8px;
  text-align: center;
}

.notes-preview h2 {
  color: #222;
  margin-bottom: 0.5em;
  font-weight: 700;
}

.notes-preview p {
  color: #555;
  font-size: 1.1rem;
  margin-bottom: 1.5em;
}

.notes-preview object {
  border: 1px solid #ddd;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  width: 100%;
  height: 600px;
  margin-bottom: 1.5em;
}

/* Download button */
.download-btn {
  background: #007bff;
  color: #fff;
  padding: 0.75em 1.5em;
  border-radius: 6px;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-size: 1rem;
  transition: background 0.3s ease;
}

.download-btn:hover,
.download-btn:focus {
  background: #0056b3;
  outline: none;
}

/* Footer */
.footer {
  background-color: #f8f9fa;
  padding: 2rem 0 1rem 0;
  border-top: 1px solid #ddd;
  font-size: 0.9rem;
  color: #555;
}

.footer a {
  color: #007bff;
  text-decoration: none;
  margin: 0 0.5em;
}

.footer a:hover,
.footer a:focus {
  text-decoration: underline;
}

/* Responsive */
@media (max-width: 600px) {
  .notes-preview object {
    height: 400px;
  }
  .navbar ul {
    flex-direction: column;
    gap: 0.75rem;
  }
}