@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600&display=swap');

:root {
  --bg-color: #f5f5f5;
  --text-color: #222;
  --primary-color: #e74c3c;
  --secondary-color: #fff;
  --border-radius: 8px;
}

[data-theme="dark"] {
  --bg-color: #1c1c1e;
  --text-color: #f0f0f0;
  --secondary-color: #2c2c2e;
  --primary-color: #ff6b6b;
}

body {
  font-family: 'Poppins', sans-serif;
  margin: 0;
  padding: 0;
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background 0.3s, color 0.3s;
  padding: 20px;
}

header, footer {
  background-color: var(--secondary-color);
  padding: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.logo {
  font-size: 1.8em;
  font-weight: 600;
  color: var(--primary-color);
}

nav a, .icons a {
  margin-left: 20px;
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
}

nav a:hover, .icons a:hover {
  color: var(--primary-color);
}

section {
  margin: 30px auto;
  max-width: 1000px;
  background: var(--secondary-color);
  padding: 30px;
  border-radius: var(--border-radius);
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

h2 {
  margin-bottom: 20px;
}

button, input[type="submit"] {
  background-color: var(--primary-color);
  color: #fff;
  border: none;
  padding: 12px 20px;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: background-color 0.3s;
}

button:hover, input[type="submit"]:hover {
  background-color: #c0392b;
}

input, textarea, select {
  width: 100%;
  padding: 12px;
  margin-bottom: 15px;
  border: 1px solid #ccc;
  border-radius: var(--border-radius);
  font-size: 1em;
  background-color: var(--secondary-color);
  color: var(--text-color);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}

th, td {
  padding: 12px;
  border: 1px solid #ccc;
}

th {
  background-color: #eee;
}

footer {
  text-align: center;
  font-size: 0.9em;
}

.toggle-theme-btn {
  background-color: transparent;
  color: var(--text-color);
  border: 1px solid var(--primary-color);
  border-radius: var(--border-radius);
  padding: 6px 14px;
  font-size: 0.9em;
  cursor: pointer;
}

.toggle-theme-btn:hover {
  background-color: var(--primary-color);
  color: #fff;
}

/* Responsive */
@media (max-width: 768px) {
  nav, .icons {
    display: none;
    flex-direction: column;
    gap: 10px;
  }

  .burger {
    display: block;
    cursor: pointer;
  }

  body {
    padding: 10px;
  }
}