/* ================= 공통 스타일 ================= */

/* 1. 전역 변수 및 기본 설정 */
:root {
    /* Color Palette (Light Mode Default) */
    --rg-color-primary: #A093D5; --rg-color-primary-dark: #8C7EC3;
    --rg-color-secondary: #F0F0F5;
    --rg-color-secondary-dark: #E5E5F0; 
    --rg-color-danger: #e53e3e; --rg-color-danger-dark: #c53030;
    --rg-color-text: #212121; --rg-color-text-secondary: #5f5f5f; --rg-color-text-light: #8e8e8e;
    --rg-color-border: #e0e0e0; --rg-color-background: #ffffff;
    --rg-color-background-alt: #f8f7fc; --rg-color-surface: #f8f7fc;
    --rg-color-disabled: #eeeeee;
    --rg-spacing: 16px; --rg-spacing-large: 24px; --rg-spacing-double: 32px;

    /* Typography & Sizing */
    --rg-font-family: 'Inter', 'Noto Sans KR', sans-serif;
    --rg-border-radius: 12px; --rg-border-radius-pill: 9999px;

    /* Transitions & Shadows */
    --rg-transition-duration: 0.2s;
    --rg-shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --rg-shadow-md: 0 8px 32px rgba(0,0,0,0.1);
}
:root[data-theme="dark"] {
    --rg-color-secondary: #2c2c31; 
    --rg-color-secondary-dark: #3a3a40;
    --rg-color-text: #e8e8e8; --rg-color-text-secondary: #9aa0a6; --rg-color-text-light: #6e6e80;
    --rg-color-border: #333333; --rg-color-background: #121212;
    --rg-color-background-alt: #1e1f22; --rg-color-surface: #1e1f22;
    --rg-color-disabled: #2a2a2a;
    --rg-shadow-sm: 0 2px 4px rgba(0,0,0,0.2);
    --rg-shadow-md: 0 8px 32px rgba(0,0,0,0.3);
}

/* 2. Base & Layout */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
    font-family: var(--rg-font-family); line-height: 1.6;
    color: var(--rg-color-text); background-color: var(--rg-color-background);
    -webkit-font-smoothing: antialiased;
    display: flex; min-height: 100vh; overflow: hidden;
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }
.no-scroll { overflow: hidden; }
.skip-link { position: absolute; top: -40px; left: 16px; padding: 8px 12px; border-radius: 8px; z-index: 10000; }
.skip-link:focus { top: 16px; }

/* 3. 공통 컴포넌트 (Components) */
.rg_container { margin: 0 auto; padding: var(--rg-spacing); width: 100%; max-width: 800px; }
.app-header { text-align: center; margin-bottom: var(--rg-spacing-large); }
.rg_card { background-color: var(--rg-color-background-alt); border-radius: var(--rg-border-radius); box-shadow: var(--rg-shadow-sm); overflow: hidden; }
.rg_card_header { padding: var(--rg-spacing-large) var(--rg-spacing-large) var(--rg-spacing); border-bottom: 1px solid var(--rg-color-border); }
.rg_card_content { padding: var(--rg-spacing-large); }


/* 애니메이션 정의: 배경 위치를 움직여 그라데이션이 흐르는 듯한 효과를 줍니다. */
@keyframes gradient-flow {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.rg_maintop-logo {
font-size: 1.8rem; font-weight: 900; 
  /* 1. 기본 Fallback 색상 (구형 브라우저에서 그라데이션이 안 보일 때 대비) */
  color: #a092c4; /* 시작 색상 중 하나를 기본으로 설정 */

  /* 2. 그라데이션 배경 설정 */
  /* to right 방향으로 세 가지 색상이 섞인 긴 그라데이션을 만듭니다. */
  /* background-size: 300% 100% 로 설정하여 애니메이션 시 부드럽게 움직이도록 합니다. */
  background: linear-gradient(to right, #a092c4, #c699c3, #e39cc2, #a092c4, #c699c3);
  background-size: 300% 100%; /* 배경을 넓게 만들어서 움직일 공간 확보 */

  /* 3. 텍스트에 배경을 클리핑하고 텍스트 색상을 투명하게 만듭니다. */
  -webkit-background-clip: text; /* 웹킷 기반 브라우저 (크롬, 사파리, 삼성 인터넷 등) */
  background-clip: text;
  -webkit-text-fill-color: transparent; /* 텍스트 채우기 색상 투명하게 (웹킷 전용) */
  color: transparent; /* 표준 텍스트 색상 투명하게 */

  /* 4. 안정적인 렌더링을 위한 display 설정 (매우 중요!) */
  display: inline-block; /* 텍스트의 실제 너비만큼만 영역을 차지하도록 */

  /* 5. 텍스트 스타일링 */
  font-size: 3rem; /* 적절한 글자 크기 */
  font-weight: 900; /* 매우 두껍게 하여 그라데이션이 잘 보이도록 */
  letter-spacing: -1px; /* 글자 간격 조절 */
  line-height: 1; /* 줄 높이 조절 */

  /* 6. 동적인 애니메이션 적용 */
  animation: gradient-flow 6s ease infinite; /* 6초 동안 부드럽게 무한 반복 */

  /* 7. 그림자 추가 (선택 사항: 텍스트를 더 돋보이게 하고, 일부 구형 브라우저에서 대비를 높여줍니다) */
  /* filter: drop-shadow(0px 2px 2px rgba(0,0,0,0.3)); */ /* 텍스트 외곽에 그림자 추가 */
}



/* Typography */
.rg_t_h1 { font-size: 1.8rem; font-weight: 800; }
.rg_t_h2 { font-size: 1.5rem; font-weight: 700; color: var(--rg-color-text); margin-bottom: 8px; }
.rg_t_h3 { font-size: 1.1rem; font-weight: 600; color: var(--rg-color-text); }
.rg_t_h4 { font-size: 0.9rem; font-weight: 600; color: var(--rg-color-text-secondary); margin-bottom: 8px; }
.rg_t_p { font-size: 1rem; color: var(--rg-color-text-secondary); }
.rg_t_desc { font-size: 0.9rem; color: var(--rg-color-text-secondary); margin-bottom: 16px; }
.rg_text_center { text-align: center; }
.rg_t_h1.with-icon { display: inline-flex; align-items: center; justify-content: center; width: 100%; }
.rg_t_h1.with-icon i { margin-right: 12px; font-size: 0.9em; }

/* Forms & Buttons */
.rg_form_group { margin-bottom: var(--rg-spacing); }
.rg_form_label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--rg-color-text-secondary); margin-bottom: 8px; }
.rg_form_input, .rg_form_select, .rg_form_textarea { width: 100%; padding: 12px; font-size: 1rem; border: 1px solid var(--rg-color-border); border-radius: var(--rg-border-radius); background-color: var(--rg-color-background); color: var(--rg-color-text); transition: border-color 0.2s, box-shadow 0.2s; }
.rg_form_input:focus, .rg_form_select:focus, .rg_form_textarea:focus { outline: none; border-color: var(--rg-color-primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--rg-color-primary) 20%, transparent); }
.rg_form_textarea { resize: vertical; min-height: 150px; }
.rg_btn { display: inline-flex; justify-content: center; align-items: center; padding: 12px 24px; font-size: 1rem; font-weight: 700; border: 1px solid transparent; border-radius: var(--rg-border-radius); cursor: pointer; transition: all 0.2s; text-decoration: none; }
.rg_btn:hover { transform: translateY(-2px); }
.rg_btn:active { transform: scale(0.98) translateY(0); }
.rg_btn.primary { background-color: var(--rg-color-primary); color: white; border-color: var(--rg-color-primary); }
.rg_btn.primary:hover { background-color: var(--rg-color-primary-dark); border-color: var(--rg-color-primary-dark); }
.rg_btn.secondary { background-color: var(--rg-color-secondary); color: var(--rg-color-text); }
.rg_btn.secondary:hover { background-color: var(--rg-color-secondary-dark); }
.rg_btn.large { padding: 16px 24px; font-size: 1.1rem; }
.rg_btn.small { padding: 8px 16px; font-size: 0.9rem; }
.rg_btn.pill { border-radius: var(--rg-border-radius-pill); }
.rg_btn_block { width: 100%; }
.rg_radio_tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: var(--rg-spacing-large); }
.rg_radio_tabs input[type="radio"] { position: absolute; opacity: 0; width: 0; height: 0; }
.rg_radio_tabs label { padding: 8px 16px; font-size: 0.9rem; font-weight: 500; border-radius: var(--rg-border-radius-pill); cursor: pointer; background-color: var(--rg-color-secondary); color: var(--rg-color-text-secondary); transition: all 0.2s ease-in-out; }
.rg_radio_tabs input[type="radio"]:checked + label { background-color: var(--rg-color-primary); color: white; font-weight: 600; box-shadow: 0 2px 8px rgba(160, 147, 213, 0.4); }
.tab-content .tab-pane { display: none; }
.tab-content .tab-pane.active { display: block; }
.rg_result_box { margin-top: var(--rg-spacing-double); padding: var(--rg-spacing); background-color: var(--rg-color-surface); border-radius: var(--rg-border-radius); min-height: 100px; display: flex; flex-direction: column; justify-content: center; align-items: center; }

/* 4. 주요 레이아웃 요소 (Sidebar, Main Content, Footer 등) */
.content-wrapper { flex-grow: 1; display: flex; flex-direction: column; height: 100vh; overflow-y: auto; }
.rg_main { flex-grow: 1; display: flex; flex-direction: column; padding: 30px; background: var(--rg-color-background); animation: fadeInUp 0.5s ease-out forwards; }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(15px); } to { opacity: 1; transform: translateY(0); } }

.rg_sidebar {
    width: 80px; background: var(--rg-color-background-alt);
    border-right: 1px solid var(--rg-color-border);
    transition: width 0.25s ease;
    position: relative; z-index: 200;
    display: grid; grid-template-rows: auto 1fr auto;
    padding: 10px;
}
.rg_sidebar[data-expanded="true"] { width: 280px; padding: 20px; }
.rg_sidebar nav[aria-label="주 메뉴"] { overflow-y: auto; min-height: 0; }
.rg_sidebar ul { list-style: none; padding: 0; }
.rg_sidebar nav[aria-label="주 메뉴"] ul { padding-bottom: 10px; }
.rg_menu-item { display: flex; align-items: center; gap: 16px; padding: 12px 14px; text-decoration: none; color: var(--rg-color-text-secondary); font-weight: 600; font-size: 15px; border-radius: var(--rg-border-radius-pill); transition: background-color 0.2s ease, color 0.2s ease; white-space: nowrap; cursor: pointer; border: none; background: none; width: 100%; }
.rg_menu-item:hover { background-color: var(--rg-color-primary); color: white; }
.rg_menu-item[aria-current="page"] { color: var(--rg-color-primary); font-weight: 700; }
.rg_menu-item i { width: 24px; text-align: center; font-size: 18px; }
.rg_menu-item span { opacity: 0; visibility: hidden; transition: opacity 0.15s ease; }
.rg_sidebar[data-expanded="true"] .rg_menu-item span { opacity: 1; visibility: visible; }
.rg_menu-bottom { margin-top: auto; padding-top: 12px; position: relative; }
.rg_menu-bottom::before { content: ''; position: absolute; top: 0; left: 50%; transform: translateX(-50%); height: 1px; background-color: var(--rg-color-border); width: 0; transition: width 0.25s ease-in-out; }
.rg_sidebar:hover .rg_menu-bottom::before { width: 40px; }
.rg_sidebar[data-expanded="true"]:hover .rg_menu-bottom::before { width: 90%; }

.rg_footer { width: 100%; padding: var(--rg-spacing-large); text-align: center; font-size: 0.85rem; color: var(--rg-color-text-light); border-top: 1px solid var(--rg-color-border); background-color: var(--rg-color-background-alt); }
.rg_footer p { margin: 0; line-height: 1.5; }
.rg_footer a { color: var(--rg-color-text-secondary); text-decoration: none; transition: color 0.2s; }
.rg_footer a:hover { color: var(--rg-color-primary); text-decoration: underline; }
.rg_banner-section { width: 100%; padding: var(--rg-spacing-large) var(--rg-spacing); background-color: var(--rg-color-background); border-top: 1px solid var(--rg-color-border); }
.rg_banner_grid { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: var(--rg-spacing-large); max-width: 1000px; margin: 0 auto; }
.rg_banner_item { display: inline-block; overflow: hidden; transition: transform 0.2s ease-out, box-shadow 0.2s ease-out; }
.rg_banner_item:hover { transform: translateY(-3px); box-shadow: var(--rg-shadow-md); }
.rg_banner_item img { display: block; max-width: 100%; height: auto; }

/* 5. 미디어 쿼리 (반응형) */
.rg_mobile-top-bar { display: none; }
.rg_overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.5); z-index: 199; opacity: 0; transition: opacity 0.25s ease; }
.rg_overlay.visible { display: block; opacity: 1; }
@media (max-width: 768px) {
    .rg_mobile-top-bar { display: flex; align-items: center; justify-content: space-between; position: fixed; top: 0; left: 0; width: 100%; height: 56px; background-color: var(--rg-color-background-alt); padding: 0 12px; z-index: 300; border-bottom: 1px solid var(--rg-color-border); }
    .rg_mobile-top-bar button { font-size: 22px; background: none; border: none; cursor: pointer; color: var(--rg-color-text-secondary); padding: 10px; }
    .rg_mobile-top-bar { color: var(--rg-color-text); text-decoration: none; font-weight: 700; }
	.rg_logo-container a {
		/* --- 기존 스타일 --- */
		color: var(--rg-color-text); 
		text-decoration: none; 
		font-weight: 700; 

		/* --- 추가 및 수정된 스타일 --- */
		display: inline-block; /* 위치 이동 및 패딩 적용을 용이하게 함 */
		padding: 8px 12px; /* 클릭 영역 확보 및 여백 추가 */
		border-radius: 8px; /* 부드러운 인상을 위한 모서리 둥글림 */
		transition: color 0.2s ease, transform 0.2s ease, background-color 0.2s ease; /* 부드러운 전환 효과 */
	}

	/* 마우스를 올리거나 키보드로 포커스했을 때의 스타일 */
	.rg_logo-container a:hover,
	.rg_logo-container a:focus {
		color: var(--rg-color-primary); /* 테마의 주요 색상으로 변경 */
		background-color: var(--rg-color-secondary); /* 은은한 배경색 추가 */
		transform: translateY(-2px); /* 살짝 위로 이동하는 효과 */
	}
    .rg_mobile-top-bar .rg_menu-placeholder { width: 44px; }
    .rg_sidebar { position: fixed; top: 56px; height: calc(100% - 56px); transform: translateX(-100%); transition: transform 0.25s ease; width: 280px; padding: 20px; }
    .rg_sidebar.open { transform: translateX(0); box-shadow: 4px 0 15px rgba(0,0,0,.2); }
    .rg_sidebar .rg_menu-item span { opacity: 1; visibility: visible; }
    .rg_main { padding: 70px 15px 15px 15px; }
}

/* 6. Sidebar Custom Scrollbar */
.rg_sidebar nav[aria-label="주 메뉴"] { scrollbar-width: none; scrollbar-color: var(--rg-color-text-light) transparent; }
.rg_sidebar nav[aria-label="주 메뉴"]:hover { scrollbar-width: thin; }
.rg_sidebar nav[aria-label="주 메뉴"]::-webkit-scrollbar { width: 8px; }
.rg_sidebar nav[aria-label="주 메뉴"]::-webkit-scrollbar-track { background-color: transparent; }
.rg_sidebar nav[aria-label="주 메뉴"]::-webkit-scrollbar-thumb { background-color: transparent; border-radius: 4px; border: 2px solid var(--rg-color-background-alt); transition: background-color 0.3s ease-in-out; }
.rg_sidebar nav[aria-label="주 메뉴"]:hover::-webkit-scrollbar-thumb { background-color: var(--rg-color-border); }
.rg_sidebar nav[aria-label="주 메뉴"]:hover::-webkit-scrollbar-thumb:hover { background-color: var(--rg-color-text-light); }

/* 검색창 */
.search-wrapper {
  max-width: 700px;
  margin: 0 auto;
}
.search-box {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
}
.search-box .search-icon {
  position: absolute;
  left: 20px;
  color: var(--rg-color-text-light);
  font-size: 16px;
}
.search-box input {
  flex-grow: 1;
  height: 56px;
  padding: 0 24px 0 50px; /* 아이콘 공간 확보 */
  font-size: 16px;
  border: 1px solid var(--rg-color-border);
  border-radius: var(--rg-border-radius-pill);
  background-color: var(--rg-color-background);
  color: var(--rg-color-text);
  box-shadow: var(--rg-shadow-sm);
  transition: all 0.2s ease;
}
.search-box input:focus {
  outline: none;
  border-color: var(--rg-color-primary);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--rg-color-primary) 20%, transparent);
}
.search-box button {
  position: absolute;
  right: 6px;
  height: 44px;
  padding: 0 24px;
  border: none;
  border-radius: var(--rg-border-radius-pill);
  background-color: var(--rg-color-primary);
  color: white;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s;
}
.search-box button:hover {
  background-color: var(--rg-color-primary-dark);
}

/* css/common.css 파일의 Forms & Buttons 섹션 등에 추가 */

/* --- Forms --- */
.rg_form_group { margin-bottom: var(--rg-spacing); }
.rg_form_textarea {
    width: 100%;
    padding: 15px;
    font-size: 1.1rem;
    border: 1px solid var(--rg-color-border);
    border-radius: var(--rg-border-radius);
    background-color: var(--rg-color-background); /* background-alt 대신 background 사용 통일 */
    color: var(--rg-color-text);
    transition: border-color 0.2s, box-shadow 0.2s;
    resize: vertical;
    min-height: 150px;
}
.rg_form_textarea:focus {
    outline: none;
    border-color: var(--rg-color-primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--rg-color-primary) 20%, transparent);
}

/* --- Buttons (기존 .rg_btn에 hover, active 효과 추가) --- */
.rg_btn:hover {
    transform: translateY(-2px);
}
.rg_btn:active {
    transform: scale(0.98) translateY(0);
}
.rg_btn.secondary {
    background-color: var(--rg-color-secondary);
    color: var(--rg-color-text);
}
.rg_btn.secondary:hover {
    background-color: var(--rg-color-secondary-dark);
}

/* --- Help Section (도움말 섹션) --- */
.help-section {
    margin-top: var(--rg-spacing-large);
    background-color: var(--rg-color-background-alt);
    border: 1px solid var(--rg-color-border);
    border-radius: var(--rg-border-radius);
    box-shadow: var(--rg-shadow-sm);
    overflow: hidden; /* 내부 콘텐츠가 radius를 넘지 않도록 */
}

#help-toggle-btn {
    width: 100%;
    text-align: left;
    padding: var(--rg-spacing) var(--rg-spacing-large);
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--rg-color-text);
    background: none;
    border: none;
    cursor: pointer;
}

#help-content {
    display: none; /* 기본적으로 숨김 */
    padding: 0 var(--rg-spacing-large) var(--rg-spacing-large);
    color: var(--rg-color-text-secondary);
    line-height: 1.8;
}

#help-content h3, #help-content h4 {
    color: var(--rg-color-text);
    margin-top: var(--rg-spacing-large);
    margin-bottom: var(--rg-spacing-small);
}

#help-content ul, #help-content ol {
    padding-left: 20px; /* 목록 들여쓰기 */
}

#help-content strong {
    color: var(--rg-color-primary-dark);
    font-weight: 600;
}