:root {
  --primary-color: #17a589;
  --success-color: #28a745;
  --danger-color: #dc3545;
  --text-gray: #555;
  --border-gray: #ddd;
  --bg-white: #ffffff;
}

html, body {
  height: 100%;
  margin: 0;
  padding: 0;
}

.wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0;
  flex: 1;
}

@media (min-width: 768px) {
  .container {
    width: 80%;
    padding: 0 16px;
  }
}

body {
  margin: 0;
  font-family: 'Helvetica', 'Arial', sans-serif;
  background-color: var(--bg-white);
}

.header {
  background-color: var(--primary-color);
  color: white;
  padding: 12px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 20px;
  font-weight: bold;
}

.login-text {
  font-size: 14px;
}

.login-text a {
  color: white;
  text-decoration: none;
  padding: 8px 16px;
  border-radius: 4px;
  transition: background-color 0.2s;
}

.login-text a:hover {
  background-color: rgba(255, 255, 255, 0.2);
}

.banner {
  width: 100%;
  max-width: 100%;
  min-width: 320px; /* 최소 너비 확보 */
  height: 120px; /* PC 기본 높이 줄임 */
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 10px auto;
  overflow: hidden; /* 광고가 넘치지 않도록 */
}

/* 태블릿 */
@media (max-width: 1024px) {
  .banner {
    height: 90px;
  }
}

/* 모바일 */
@media (max-width: 768px) {
  .banner {
    height: 60px;
    margin: 5px auto;
  }
}

.banner img {
  max-width: 100%;
  max-height: 100%;
}

.footer {
  background-color: var(--bg-white);
  color: var(--text-gray);
  font-size: 14px;
  padding: 20px 10px;
  margin-top: 40px;
  border-top: 1px solid var(--border-gray);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.footer-brand {
  font-weight: bold;
  font-size: 16px;
  margin-bottom: 10px;
  color: var(--primary-color);
}

.footer-links {
  margin-bottom: 10px;
}

.footer-links a {
  margin: 0 8px;
  color: var(--text-gray);
  text-decoration: none;
}

.footer-links a:hover {
  text-decoration: underline;
}

.footer-copy {
  font-size: 13px;
  color: #999;
}

@media (max-width: 768px) {
  .board-ads {
    min-width: 320px; /* 모바일에서도 최소 너비 유지 */
  }
}