:root {
  --bg: #f4f6fb;
  --card: #ffffff;
  --primary: #3b5bdb;
  --primary-dark: #2f49b0;
  --text: #2b2d42;
  --muted: #6c757d;
  --border: #e3e7ef;
  --error: #e03131;
  --shadow: 0 4px 16px rgba(40, 50, 90, 0.08);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.site-header {
  text-align: center;
  padding: 32px 16px 16px;
}

.site-header h1 {
  margin: 0;
  font-size: 1.9rem;
}

.subtitle {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 0 16px 48px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 20px;
}

.control-row {
  margin-bottom: 16px;
}

.control-row label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
}

.control-row small {
  font-weight: 400;
  color: var(--muted);
}

select,
input[type="text"] {
  width: 100%;
  padding: 11px 12px;
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: #fff;
  color: var(--text);
}

select:focus,
input[type="text"]:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59, 91, 219, 0.15);
}

.error {
  color: var(--error);
  font-size: 0.9rem;
  margin: 4px 0 12px;
  min-height: 1em;
}

.btn-primary {
  width: 100%;
  padding: 14px;
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  background: var(--primary);
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.05s ease;
}

.btn-primary:hover { background: var(--primary-dark); }
.btn-primary:active { transform: translateY(1px); }

.btn-ghost {
  padding: 8px 14px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary);
  background: transparent;
  border: 1px solid var(--primary);
  border-radius: 8px;
  cursor: pointer;
}

.btn-ghost:hover { background: rgba(59, 91, 219, 0.08); }

.results-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.results-head h2 { margin: 0; font-size: 1.2rem; }

.results-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.result-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--border);
}

.result-row:last-child { border-bottom: none; }

.game-label {
  font-weight: 700;
  color: var(--muted);
  min-width: 26px;
}

.ball {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  color: #fff;
  font-weight: 700;
  font-size: 1.05rem;
  box-shadow: inset -2px -3px 4px rgba(0, 0, 0, 0.18);
  animation: pop 0.25s ease;
}

@keyframes pop {
  from { transform: scale(0.5); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

/* 한국 로또 공식 색상 구간 */
.ball.c1 { background: #fbc400; } /* 1-10 */
.ball.c2 { background: #69c8f2; } /* 11-20 */
.ball.c3 { background: #ff7272; } /* 21-30 */
.ball.c4 { background: #aaaaaa; } /* 31-40 */
.ball.c5 { background: #b0d840; } /* 41-45 */

.plus {
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--muted);
  margin: 0 2px;
}

/* 보너스 번호는 점선 테두리로 구분 */
.ball.bonus {
  box-shadow: inset -2px -3px 4px rgba(0, 0, 0, 0.18), 0 0 0 2px #fff, 0 0 0 4px var(--muted);
}

/* 허브 홈 카드 그리드 */
.tool-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
}

.tool-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  text-decoration: none;
  color: var(--text);
  transition: transform 0.08s ease, border-color 0.15s ease;
}

.tool-card:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
}

.tc-icon { font-size: 1.8rem; line-height: 1; }
.tc-body { display: flex; flex-direction: column; flex: 1; }
.tc-body strong { font-size: 1.1rem; }
.tc-body small { color: var(--muted); margin-top: 2px; }
.tc-arrow { color: var(--muted); font-size: 1.2rem; }

/* 뒤로가기 내비게이션 */
.back-nav {
  max-width: 640px;
  margin: 0 auto;
  padding: 16px 16px 0;
}

.back-nav a {
  color: var(--primary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
}

.back-nav a:hover { text-decoration: underline; }

/* 체크박스 행 */
.checkbox-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  cursor: pointer;
}
.checkbox-row input { width: 18px; height: 18px; }
.checkbox-row small { font-weight: 400; color: var(--muted); }

/* 라디오/세그먼트 선택 */
.segment {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.segment label {
  flex: 1;
  min-width: 120px;
  display: block;
  font-weight: 600;
  text-align: center;
  padding: 11px 10px;
  border: 1px solid var(--border);
  border-radius: 9px;
  cursor: pointer;
  background: #fff;
}

.segment input { position: absolute; opacity: 0; pointer-events: none; }
.segment input:checked + span { color: #fff; }
.segment label:has(input:checked) {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* 도구 간 내비게이션 */
.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  max-width: 640px;
  margin: 0 auto 16px;
  padding: 0 16px;
}

.site-nav a {
  padding: 8px 14px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 999px;
  box-shadow: var(--shadow);
}

.site-nav a:hover { background: rgba(59, 91, 219, 0.08); }
.site-nav a.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* 계산기 결과/표 공통 */
.result-hero {
  text-align: center;
  padding: 8px 0 4px;
}

.result-hero .big {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--primary);
}

.result-hero .big small {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--muted);
}

.result-sub {
  text-align: center;
  color: var(--muted);
  margin: 4px 0 8px;
}

.calc-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 8px;
}

.calc-table th,
.calc-table td {
  padding: 11px 8px;
  border-bottom: 1px solid var(--border);
  font-size: 0.97rem;
}

.calc-table th { text-align: left; color: var(--muted); font-weight: 600; }
.calc-table td { text-align: right; font-variant-numeric: tabular-nums; }
.calc-table tr.total th { color: var(--text); font-weight: 800; }
.calc-table tr.total td { color: var(--primary); font-weight: 800; font-size: 1.1rem; }
.calc-table tr.deduct td { color: var(--error); }

/* 블로그 */
.post {
  max-width: 720px;
}
.post h1 { font-size: 1.7rem; line-height: 1.35; margin: 0 0 8px; }
.post .post-meta { color: var(--muted); font-size: 0.9rem; margin-bottom: 20px; }
.post h2 {
  font-size: 1.3rem;
  margin: 32px 0 12px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}
.post h3 { font-size: 1.1rem; margin: 22px 0 8px; }
.post p { margin: 12px 0; }
.post ul, .post ol { padding-left: 22px; }
.post li { margin: 6px 0; }
.post strong { color: var(--text); }
.post .lead { font-size: 1.08rem; color: #444; }
.post .cta {
  display: inline-block;
  margin: 8px 0;
  padding: 13px 22px;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  border-radius: 10px;
  text-decoration: none;
}
.post .cta:hover { background: var(--primary-dark); }
.post .callout {
  background: #f0f4ff;
  border: 1px solid #d6e0ff;
  border-radius: 10px;
  padding: 14px 16px;
  margin: 16px 0;
  font-size: 0.97rem;
}
.post .toc {
  background: #fafbff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 18px;
  margin: 16px 0 24px;
}
.post .toc strong { display: block; margin-bottom: 6px; }
.post .toc a { color: var(--primary); text-decoration: none; }
.post .toc a:hover { text-decoration: underline; }

/* 블로그 글 목록 */
.post-list { list-style: none; padding: 0; margin: 0; }
.post-list li { margin-bottom: 12px; }
.post-list a {
  display: block;
  padding: 18px 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  text-decoration: none;
  color: var(--text);
}
.post-list a:hover { border-color: var(--primary); }
.post-list strong { font-size: 1.1rem; display: block; }
.post-list small { color: var(--muted); display: block; margin-top: 4px; }

.info h2 { margin-top: 0; font-size: 1.2rem; }
.info ul { padding-left: 20px; margin: 0; }
.info li { margin-bottom: 8px; }

.ad-container {
  max-width: 640px;
  margin: 0 auto 20px;
  padding: 0 16px;
  min-height: 90px;
  text-align: center;
}

.site-footer {
  text-align: center;
  padding: 24px 16px 40px;
  color: var(--muted);
  font-size: 0.85rem;
}

@media (max-width: 480px) {
  .site-header h1 { font-size: 1.6rem; }
  .ball { width: 38px; height: 38px; font-size: 1rem; }
  .card { padding: 18px; }
}