/* Theme variables */
:root {
  --primary-color: #ff8a65;
  --primary-dark: #e65100;
  --text-color: #333;
  --bg-color: #fff8f1;
  --secondary-bg: #ffe0b2;
  --card-bg: #ffffff;
  --error-color: #ef5350;
  --success-color: #66bb6a;
}

[data-theme="dark"] {
  --primary-color: #ff7043;
  --primary-dark: #ff8a65;
  --text-color: #f5f5f5;
  --bg-color: #121212;
  --secondary-bg: #1e1e1e;
  --card-bg: #2d2d2d;
  --error-color: #f44336;
  --success-color: #4caf50;
}

/* Base styles */
body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(to bottom right, var(--bg-color), var(--secondary-bg));
  min-height: 100vh;
  color: var(--text-color);
  transition: background 0.3s ease, color 0.3s ease;
}

/* Theme toggle button */
.theme-toggle {
  position: absolute;
  top: 10px;
  left: 10px;
}

#themeBtn {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: 8px 12px;
  border-radius: 20px;
  cursor: pointer;
  font-size: 14px;
}

/* Headings */
h1, h2 {
  text-align: center;
  color: var(--primary-dark);
  margin-top: 30px;
}