/* Light mode (기본) */
:root {
  --bg-color: #ffffff;
  --text-color: #111111;
  --btn-bg: #eeeeee;
  --btn-color: #111111;
  --btn-border: #cccccc;
}

/* Dark mode */
body.dark {
  --bg-color: #1a1a1a;
  --text-color: #f0f0f0;
  --btn-bg: #333333;
  --btn-color: #f0f0f0;
  --btn-border: #555555;
}

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

button {
  background-color: var(--btn-bg);
  color: var(--btn-color);
  border: 1px solid var(--btn-border);
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  transition: background-color 0.3s, color 0.3s;
}

#theme-toggle {
  float: right;
  font-size: 15px;
}

/* 제휴 문의 폼 */
.contact-section {
  max-width: 540px;
  margin: 60px auto 0;
}

.contact-section h2 {
  margin-bottom: 20px;
  font-size: 22px;
}

.form-group {
  display: flex;
  flex-direction: column;
  margin-bottom: 16px;
}

.form-group label {
  margin-bottom: 6px;
  font-size: 14px;
  font-weight: bold;
}

.form-group input,
.form-group textarea {
  background-color: var(--btn-bg);
  color: var(--text-color);
  border: 1px solid var(--btn-border);
  border-radius: 6px;
  padding: 10px 12px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s, background-color 0.3s, color 0.3s;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: #888;
}

.submit-btn {
  width: 100%;
  padding: 12px;
  font-size: 15px;
  font-weight: bold;
  margin-top: 4px;
}

.success-msg {
  margin-top: 16px;
  color: #4caf50;
  font-size: 15px;
}

/* Disqus 댓글 */
.disqus-section {
  max-width: 540px;
  margin: 60px auto 60px;
}

.disqus-section h2 {
  margin-bottom: 20px;
  font-size: 22px;
}