/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Poppins", sans-serif;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background: #f2f6fa;
  color: #333;
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(135deg, #0077b6, #023e8a);
  color: white;
  padding: 15px 50px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.logo {
  font-size: 1.8rem;
  font-weight: 700;
}

.logo span {
  color: #00b4d8;
}

.nav a {
  color: white;
  text-decoration: none;
  margin-left: 25px;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav a:hover {
  color: #00b4d8;
}

/* Main Section */
.main {
  display: flex;
  flex: 1;
  gap: 20px;
  padding: 30px 50px;
}

/* Sidebar */
.sidebar {
  flex: 1;
  background: white;
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.sidebar h3 {
  margin-bottom: 15px;
  color: #023e8a;
}

.sidebar ul {
  list-style: none;
}

.sidebar ul li {
  margin: 10px 0;
}

.sidebar a {
  text-decoration: none;
  color: #0077b6;
  transition: 0.3s;
}

.sidebar a:hover {
  color: #0096c7;
}

/* Content */
.content {
  flex: 2;
  background: white;
  border-radius: 10px;
  padding: 30px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.content h1 {
  color: #023e8a;
  margin-bottom: 15px;
}

.content p {
  font-size: 1.1rem;
  line-height: 1.6;
  margin-bottom: 30px;
}

/* Bonus Center Box */
.center-box {
  display: flex;
  justify-content: center;
  align-items: center;
  border: 2px dashed #90e0ef;
  border-radius: 10px;
  padding: 40px;
}

.center-box button {
  padding: 12px 30px;
  background-color: #0077b6;
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.center-box button:hover {
  background-color: #00b4d8;
  transform: scale(1.05);
}

/* Extra Panel */
.extra {
  flex: 1;
  background: white;
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.extra h3 {
  color: #023e8a;
  margin-bottom: 10px;
}

/* Footer */
.footer {
  background: linear-gradient(135deg, #023e8a, #0077b6);
  color: white;
  text-align: center;
  padding: 20px;
  font-size: 0.95rem;
  letter-spacing: 0.5px;
}

/* Optional Hover Effects for Panels */
.sidebar:hover, .content:hover, .extra:hover {
  transform: translateY(-3px);
  transition: 0.3s ease;
}