/* ── 월렛 바이올렛 컬러 팔레트 ── */
:root {
  --violet-50:  #f5f3ff;
  --violet-100: #ede9fe;
  --violet-600: #7c3aed;
  --violet-700: #6d28d9;
  --violet-800: #5b21b6;
  --gray-50:  #f9fafb;
  --gray-100: #f3f4f6;
  --gray-300: #d1d5db;
  --gray-500: #6b7280;
  --gray-700: #374151;
  --gray-900: #111827;
  --white: #ffffff;

  /* 기본 글자 크기 (가독성 우선) */
  --base-font: 18px;
}

/* 글자 크기 단계 */
body.font-small  { --base-font: 15px; }
body.font-normal { --base-font: 18px; }
body.font-large  { --base-font: 22px; }

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Noto Sans KR', sans-serif;
  font-size: var(--base-font);
  background: var(--white);
  color: var(--gray-900);
  line-height: 1.75;
  word-break: keep-all;
}

/* ── 스크린리더용 숨김 ── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ── 본문 바로가기 ── */
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  background: var(--violet-600);
  color: var(--white);
  font-size: 16px;
  padding: 12px 20px;
  border-radius: 0 0 8px 8px;
  text-decoration: none;
  z-index: 1000;
  transition: top 0.2s;
}
.skip-link:focus { top: 0; }

/* ── 헤더 ── */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.97);
  border-bottom: 2px solid var(--violet-100);
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
  height: 72px;
  display: flex;
  align-items: center;
  gap: 24px;
}

/* ── 로고 ── */
.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  flex-shrink: 0;
}
.logo-icon {
  font-size: 22px;
  color: var(--violet-600);
}
.logo-text {
  font-size: 22px;
  font-weight: 900;
  color: var(--violet-700);
  letter-spacing: -0.5px;
}

/* ── 글자 크기 조절 ── */
.font-controls {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 8px;
}
.font-btn {
  border: 1px solid var(--gray-300);
  background: var(--white);
  color: var(--gray-700);
  border-radius: 6px;
  cursor: pointer;
  line-height: 1;
  transition: all 0.15s;
  font-family: 'Noto Sans KR', sans-serif;
}
.font-btn:nth-child(1) { font-size: 13px; padding: 5px 10px; }
.font-btn:nth-child(2) { font-size: 16px; padding: 5px 10px; }
.font-btn:nth-child(3) { font-size: 19px; padding: 4px 10px; }
.font-btn:hover,
.font-btn.active {
  background: var(--violet-600);
  color: var(--white);
  border-color: var(--violet-600);
}
.font-btn:focus {
  outline: 3px solid var(--violet-400, #a78bfa);
  outline-offset: 2px;
}

/* ── 네비게이션 ── */
.nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
.nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 16px;
  font-weight: 500;
  color: var(--gray-700);
  text-decoration: none;
  padding: 10px 16px;
  border-radius: 10px;
  transition: all 0.15s;
  white-space: nowrap;
}
.nav-link:hover {
  color: var(--violet-700);
  background: var(--violet-50);
}
.nav-link:focus {
  outline: 3px solid var(--violet-600);
  outline-offset: 2px;
}
.nav-icon { font-size: 18px; }

.nav-cta {
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
  background: var(--violet-600);
  text-decoration: none;
  padding: 12px 24px;
  border-radius: 10px;
  margin-left: 8px;
  white-space: nowrap;
  transition: background 0.15s, transform 0.1s;
}
.nav-cta:hover { background: var(--violet-700); }
.nav-cta:focus {
  outline: 3px solid var(--violet-800);
  outline-offset: 2px;
}

/* ── 히어로 ── */
.hero {
  padding: 140px 32px 80px;
  background: linear-gradient(160deg, var(--violet-50) 0%, var(--white) 60%);
  text-align: center;
}
.hero-content {
  max-width: 720px;
  margin: 0 auto;
}
.hero-tag {
  display: inline-block;
  font-size: 15px;
  font-weight: 500;
  color: var(--violet-700);
  background: var(--violet-100);
  padding: 6px 18px;
  border-radius: 100px;
  margin-bottom: 24px;
}
.hero-title {
  font-size: clamp(36px, 6vw, 60px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -1px;
  color: var(--gray-900);
  margin-bottom: 20px;
}
.hero-title .highlight {
  color: var(--violet-600);
}
.hero-desc {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--gray-700);
  line-height: 1.9;
  margin-bottom: 40px;
}

/* ── 검색바 ── */
.search-bar {
  display: flex;
  align-items: stretch;
  max-width: 600px;
  margin: 0 auto;
  border: 2px solid var(--violet-600);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(124,58,237,0.15);
  background: var(--white);
}
.search-input {
  flex: 1;
  font-size: 17px;
  font-family: 'Noto Sans KR', sans-serif;
  color: var(--gray-900);
  padding: 16px 20px;
  border: none;
  outline: none;
  background: transparent;
}
.search-input::placeholder { color: var(--gray-500); }
.search-btn {
  font-size: 17px;
  font-weight: 700;
  font-family: 'Noto Sans KR', sans-serif;
  color: var(--white);
  background: var(--violet-600);
  border: none;
  padding: 16px 28px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s;
}
.search-btn:hover { background: var(--violet-700); }
.search-btn:focus {
  outline: 3px solid var(--violet-800);
  outline-offset: -3px;
}

/* ── 공통 섹션 ── */
.section-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}
.section-title {
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 900;
  color: var(--gray-900);
  margin-bottom: 40px;
  text-align: center;
}

/* ── 카테고리 ── */
.categories {
  padding: 80px 0;
  background: var(--white);
}
.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.category-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  text-decoration: none;
  padding: 40px 24px;
  background: var(--gray-50);
  border: 2px solid var(--gray-100);
  border-radius: 20px;
  transition: all 0.2s;
  gap: 12px;
}
.category-card:hover {
  border-color: var(--violet-600);
  background: var(--violet-50);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(124,58,237,0.13);
}
.category-card:focus {
  outline: 3px solid var(--violet-600);
  outline-offset: 3px;
}
.category-emoji {
  font-size: 48px;
  line-height: 1;
}
.category-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--gray-900);
}
.category-desc {
  font-size: 15px;
  color: var(--gray-500);
  line-height: 1.6;
}

/* ── 이런 분들께 ── */
.audience {
  padding: 80px 0;
  background: var(--violet-50);
  border-top: 2px solid var(--violet-100);
  border-bottom: 2px solid var(--violet-100);
}
.audience-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.audience-card {
  background: var(--white);
  border-radius: 20px;
  padding: 40px 32px;
  border: 2px solid var(--violet-100);
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.audience-emoji { font-size: 44px; line-height: 1; }
.audience-card strong {
  font-size: 19px;
  font-weight: 700;
  color: var(--violet-700);
}
.audience-card p {
  font-size: 16px;
  color: var(--gray-700);
  line-height: 1.8;
}

/* ── 푸터 ── */
.footer {
  padding: 48px 32px;
  background: var(--gray-900);
  color: var(--gray-300);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
}
.footer-logo {
  font-size: 20px;
  font-weight: 900;
  color: var(--violet-400, #a78bfa);
}
.footer-copy { font-size: 14px; }
.footer-nav {
  display: flex;
  gap: 24px;
  margin-top: 4px;
}
.footer-nav a {
  font-size: 14px;
  color: var(--gray-300);
  text-decoration: none;
}
.footer-nav a:hover { color: var(--white); }
.footer-nav a:focus { outline: 2px solid var(--violet-400, #a78bfa); outline-offset: 2px; }

/* ── 반응형 ── */
@media (max-width: 900px) {
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .audience-grid { grid-template-columns: 1fr; }
  .nav-link { display: none; }
}

@media (max-width: 600px) {
  .header-inner { padding: 0 16px; gap: 12px; }
  .category-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .section-inner { padding: 0 16px; }
  .hero { padding: 120px 16px 60px; }
  .font-controls { display: none; }
  .search-bar { flex-direction: column; border-radius: 12px; }
  .search-btn { border-radius: 0 0 10px 10px; padding: 14px; }
}