/* 기본 구조 */
body {
  margin: 0;
  font-family: 'Apple SD Gothic Neo', 'Noto Sans KR', sans-serif;
  background-color: #f8f9fa;
  color: #333;
}

a {
  text-decoration: none;
  color: inherit;
}

/* 헤더 스타일 */
.site-header {
  background-color: #007BFF;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
}

.site-header .logo {
  height: 40px;
}

.site-header nav a {
  color: #ffffff;
  margin-left: 20px;
  font-weight: bold;
}

/* 햄버거 메뉴 */
.menu-toggle {
  display: none;
  font-size: 28px;
  background: none;
  border: none;
  cursor: pointer;
  color: #ffffff;
}

/* 레이아웃 */
.container {
  display: flex;
  padding: 20px;
  gap: 20px;
}

/* 사이드바 */
.sidebar {
  width: 220px;
  background: #f1f1f1;
  padding: 20px;
  border-radius: 8px;
}

.sidebar h3 {
  margin-top: 0;
  font-size: 18px;
  color: #007BFF;
}

.sidebar ul {
  list-style: none;
  padding-left: 0;
}

.sidebar ul li {
  margin: 10px 0;
}

input[type="color"].tool-input {
  width: 50px;
  height: 50px;
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
}


.sidebar ul li a {
  color: #007BFF;
  font-weight: 500;
}

/* 메인 콘텐츠 */
.main-content {
  flex: 1;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 15px;
  margin-top: 20px;
}

.tool-card {
  display: block;
  padding: 20px;
  background-color: #ffffff;
  border: 1px solid #ddd;
  border-radius: 8px;
  text-align: center;
  font-weight: bold;
  color: #007BFF;
  transition: box-shadow 0.3s ease;
}

.tool-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.form-textarea {
  width: 100%;
  padding: 12px;
  font-size: 16px;
  border: 1px solid #ccc;
  border-radius: 6px;
  box-sizing: border-box;
  margin-bottom: 16px;
}

.tool-button-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}

.tool-form {
  max-width: 600px;
  background: #fff;
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  margin-bottom: 2rem;
}

.tool-form label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.tool-input,
.tool-select {
  width: 100%;
  padding: 0.5rem;
  margin-bottom: 1rem;
  font-size: 16px;
  border: 1px solid #ccc;
  border-radius: 4px;
  box-sizing: border-box;
}

.tool-button {
  width: 100%;
  padding: 0.6rem;
  background-color: #636e72;
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 16px;
  cursor: pointer;
}

.tool-button:hover {
  background-color: #2d3436;
}

.tool-result {
  margin-top: 1.5rem;
  font-size: 1.1rem;
}

.button-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
  margin-top: 1rem;
}

.button-grid button {
  padding: 0.8rem;
  font-size: 1rem;
  background-color: #f1f1f1;
  border: 1px solid #ccc;
  border-radius: 5px;
  cursor: pointer;
}

.button-grid button:hover {
  background-color: #e0e0e0;
}





/* 푸터 */
.site-footer {
  text-align: center;
  padding: 20px;
  background-color: #f1f1f1;
  color: #777;
  font-size: 14px;
}

.menu-toggle {
  display: none;
  font-size: 28px;
  background: none;
  border: none;
  cursor: pointer;
  color: #ffffff !important;  /* 햄버거 아이콘을 흰색으로 강제 지정 */
  margin-left: auto;
  padding: 10px;
  z-index: 1100;
}

/* 반응형 */
@media (max-width: 768px) {
  .container {
    flex-direction: column;
    padding: 10px;
  }

  .menu-toggle {
    display: block;
  }

  .sidebar {
    position: fixed;
    top: 60px;
    left: -260px;
    width: 220px;
    height: 100%;
    background: #ffffff;
    padding: 20px;
    overflow-y: auto;
    box-shadow: 2px 0 10px rgba(0,0,0,0.1);
    transition: left 0.3s ease;
    z-index: 1000;
  }

  .sidebar.open {
    left: 0;
  }
}