:root {
  --bg-color: #f4f4f9;
  --container-bg: white;
  --text-color: #333;
  --shadow-color: rgba(0, 0, 0, 0.1);
  --number-bg: #eee;
  --button-bg: #3498db;
  --button-hover: #2980b9;
}

body.dark-mode {
  --bg-color: #1a1a1a;
  --container-bg: #2d2d2d;
  --text-color: #f4f4f9;
  --shadow-color: rgba(0, 0, 0, 0.5);
  --number-bg: #444;
}

body {
  font-family: 'Arial', sans-serif;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  min-height: 100vh;
  margin: 0;
  padding: 80px 20px 40px;
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color 0.3s, color 0.3s;
  box-sizing: border-box;
}

.container {
  width: 100%;
  max-width: 700px;
  text-align: center;
  background: var(--container-bg);
  padding: 2rem;
  border-radius: 15px;
  box-shadow: 0 4px 15px var(--shadow-color);
  transition: background-color 0.3s, box-shadow 0.3s;
  margin-bottom: 2rem;
  box-sizing: border-box;
}

h1, h2 {
  color: var(--text-color);
  margin-bottom: 2rem;
}

.partnership-container {
  text-align: left;
}

.comments-container {
  text-align: left;
  min-height: 200px;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: bold;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 10px;
  border: 1px solid var(--number-bg);
  border-radius: 5px;
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: inherit;
  box-sizing: border-box;
}

.form-group textarea {
  height: 100px;
  resize: vertical;
}

form button {
  width: 100%;
}

.numbers-container {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-bottom: 2rem;
}

.number {
  width: 50px;
  height: 50px;
  line-height: 50px;
  border-radius: 50%;
  background-color: var(--number-bg);
  color: var(--text-color);
  font-weight: bold;
  font-size: 1.2rem;
  display: inline-block;
  transition: all 0.3s ease;
}

.number.active {
  color: #fff;
  transform: scale(1.1);
}

button {
  padding: 10px 20px;
  font-size: 1rem;
  background-color: var(--button-bg);
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.2s, transform 0.1s;
}

button:hover {
  background-color: var(--button-hover);
}

button:active {
  transform: translateY(2px);
}

.theme-toggle {
  position: absolute;
  top: 20px;
  right: 20px;
}

#theme-btn {
  background: none;
  border: 1px solid var(--text-color);
  color: var(--text-color);
  padding: 5px 10px;
  border-radius: 20px;
}