/* 로또 6/45 통계 — 모바일 우선 반응형 스타일.
 * 기본 규칙은 폰(~719px) 기준이고, min-width 미디어쿼리로 넓은 화면을 덧붙인다.
 *   720px+  : 카드 2열 배치
 *   960px+  : 왼쪽 필터 사이드바 + 상단 탭 (하단 내비 대신)
 */

:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --surface-2: #f0f2f5;
  --text: #1f2329;
  --muted: #5f6670;
  --border: #e3e5e9;
  --grid: #e8eaee;
  --primary: #d32f2f;
  --primary-contrast: #ffffff;
  --accent: #1565c0;
  --warn-bg: #fff6f6;
  --warn-border: #f2c4c4;
  --warn-text: #8a2b2b;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .08);
  --radius: 14px;
  --nav-h: 60px;
  --topbar-h: 56px;
  --font: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Pretendard",
    "Noto Sans KR", "Malgun Gothic", "Segoe UI", sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121417;
    --surface: #1c1f24;
    --surface-2: #252930;
    --text: #e8eaed;
    --muted: #a0a6ae;
    --border: #2c3037;
    --grid: #2f343b;
    --primary: #ef5350;
    --primary-contrast: #ffffff;
    --accent: #64a0e8;
    --warn-bg: #2a1b1c;
    --warn-border: #5c2b2d;
    --warn-text: #f2b8b8;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4);
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.5;
  -webkit-tap-highlight-color: transparent;
}

[hidden] { display: none !important; }

h1, h2 { margin: 0; line-height: 1.3; }
h2 { font-size: 16px; font-weight: 700; }
p { margin: 0; }
button, input { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: inherit; }

.muted { color: var(--muted); }
.small { font-size: 13px; }
.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;
}

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* --- 상단 바 ---------------------------------------------------------------- */
.topbar {
  position: sticky; top: 0; z-index: 30;
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  height: calc(var(--topbar-h) + env(safe-area-inset-top));
  padding: env(safe-area-inset-top) 16px 0;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.brand {
  display: flex; align-items: center; gap: 8px; min-width: 0;
  font-weight: 800; font-size: 17px; text-decoration: none; white-space: nowrap;
}
.brand span { overflow: hidden; text-overflow: ellipsis; }
.range-chip {
  display: inline-flex; align-items: center; gap: 4px; flex-shrink: 0;
  padding: 6px 10px 6px 12px;
  border: 1px solid var(--border); border-radius: 999px;
  background: var(--surface-2); font-size: 13px; font-weight: 600;
}
.range-chip[aria-expanded="true"] svg { transform: rotate(180deg); }

/* --- 레이아웃 / 필터 --------------------------------------------------------- */
.layout { max-width: 1280px; margin: 0 auto; }

.filters {
  display: none;
  padding: 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.filters.open { display: grid; gap: 14px; }
.filters-title { font-size: 15px; }

.field { display: grid; gap: 6px; font-size: 13px; color: var(--muted); min-width: 0; }
.field b { color: var(--text); }
.field input[type="number"] {
  width: 100%; padding: 10px 12px;
  border: 1px solid var(--border); border-radius: 10px;
  background: var(--surface-2); color: var(--text); font-size: 16px; /* iOS 확대 방지 */
}
.field input[type="range"] { width: 100%; accent-color: var(--primary); }
.field-row { display: flex; align-items: end; gap: 8px; }
.field-row .field { flex: 1; }
.field-sep { padding-bottom: 12px; color: var(--muted); }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  padding: 7px 12px; border-radius: 999px;
  border: 1px solid var(--border); background: var(--surface);
  font-size: 13px; font-weight: 600;
}
.chip.active { background: var(--primary); border-color: var(--primary); color: var(--primary-contrast); }

main {
  min-width: 0;
  padding: 16px 16px calc(var(--nav-h) + 24px + env(safe-area-inset-bottom));
}

/* --- 내비게이션: 폰에서는 하단 고정 바 ---------------------------------------- */
.nav {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 40;
  display: grid; grid-template-columns: repeat(6, 1fr);
  height: calc(var(--nav-h) + env(safe-area-inset-bottom));
  padding-bottom: env(safe-area-inset-bottom);
  background: var(--surface);
  border-top: 1px solid var(--border);
}
.nav a {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  text-decoration: none; color: var(--muted); font-size: 11px; font-weight: 600;
}
.nav svg {
  width: 22px; height: 22px;
  fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round;
}
.nav a[aria-current="page"] { color: var(--primary); }

/* --- 화면 공통 ---------------------------------------------------------------- */
.view { display: grid; gap: 14px; }
.view-title { font-size: 20px; font-weight: 800; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  display: grid; gap: 10px;
  min-width: 0;
}
.card-head { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; }

.grid-2 { display: grid; gap: 14px; }

.chart { width: 100%; min-height: 120px; }

.disclaimer {
  background: var(--warn-bg); border: 1px solid var(--warn-border); color: var(--warn-text);
  padding: 10px 14px; border-radius: 10px; font-size: 13px;
}

.status {
  padding: 12px 14px; border-radius: 10px; margin-bottom: 14px;
  background: var(--surface-2); border: 1px solid var(--border); font-size: 14px;
}
.status.error { background: var(--warn-bg); border-color: var(--warn-border); color: var(--warn-text); }

.footer { display: grid; gap: 4px; margin-top: 24px; text-align: center; }

/* --- 로또 공 ---------------------------------------------------------------- */
.balls { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.ball {
  --size: clamp(30px, 9vw, 40px);
  display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0;
  width: var(--size); height: var(--size); border-radius: 50%;
  color: #fff; font-weight: 800; font-size: calc(var(--size) * .4);
  text-shadow: 0 1px 1px rgba(0, 0, 0, .25);
  box-shadow: inset 0 -2px 3px rgba(0, 0, 0, .18), 0 1px 2px rgba(0, 0, 0, .2);
  font-variant-numeric: tabular-nums;
}
/* 최신 당첨번호: 공 7개 + '+' 가 화면 폭과 상관없이 한 줄에 들어가도록 컨테이너 폭 기준으로 크기 결정 */
.balls-lg { container-type: inline-size; flex-wrap: nowrap; gap: 5px; }
.balls-lg .ball { --size: clamp(28px, 9vw, 52px); }
@supports (width: 1cqi) {
  .balls-lg .ball { --size: clamp(24px, calc((100cqi - 56px) / 7), 52px); }
}
.ball-sm { --size: 28px; }
.plus { color: var(--muted); font-weight: 800; font-size: 18px; padding: 0 2px; }

/* 공 + 아래 숫자(출현 횟수) */
.balls.counted { gap: 10px 8px; }
.ball-stat { display: grid; justify-items: center; gap: 2px; font-size: 12px; color: var(--muted); }

/* --- 홈 --------------------------------------------------------------------- */
.hero { gap: 14px; }
.metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.metric {
  display: grid; gap: 2px; padding: 10px 12px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
  min-width: 0;
}
.metric-label { font-size: 12px; color: var(--muted); }
.metric b { font-size: clamp(13px, 3.9vw, 15px); word-break: keep-all; }

.draw-list, .rec-list, .pair-list { list-style: none; margin: 0; padding: 0; display: grid; }
.draw-list li {
  display: flex; flex-wrap: wrap; align-items: center; gap: 4px 10px;
  padding: 10px 0; border-top: 1px solid var(--border);
}
.draw-list li:first-child { border-top: 0; padding-top: 0; }
.draw-meta { display: grid; min-width: 68px; font-size: 13px; }
.draw-meta b { font-size: 14px; }
.draw-list .balls { gap: 4px; }

/* --- 추천 ------------------------------------------------------------------- */
.segmented { border: 0; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.segmented legend { font-size: 13px; color: var(--muted); margin-bottom: 8px; padding: 0; }
.segmented label { position: relative; }
.segmented input { position: absolute; opacity: 0; pointer-events: none; }
.segmented span {
  display: block; text-align: center; padding: 10px 6px;
  border: 1px solid var(--border); border-radius: 10px; background: var(--surface-2);
  font-size: 14px; font-weight: 700;
}
.segmented input:checked + span { border-color: var(--primary); background: var(--primary); color: var(--primary-contrast); }
.segmented input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }

.rec-controls { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; }
.stepper { display: inline-flex; align-items: center; gap: 8px; }
.stepper button {
  width: 40px; height: 40px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--surface-2); font-size: 20px; line-height: 1;
}
.stepper output { min-width: 1.5em; text-align: center; font-weight: 800; font-size: 18px; }

.btn-primary {
  flex: 1; min-width: 160px; padding: 12px 18px;
  border: 0; border-radius: 12px; background: var(--primary); color: var(--primary-contrast);
  font-weight: 800; font-size: 16px;
}
.btn-primary:active { transform: translateY(1px); }
.btn-ghost {
  padding: 6px 12px; border-radius: 999px;
  border: 1px solid var(--border); background: transparent; font-size: 13px; font-weight: 600;
}

.rec-list li {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 0; border-top: 1px solid var(--border);
}
.rec-list li:first-child { border-top: 0; padding-top: 0; }
.rec-label { width: 18px; font-weight: 800; color: var(--muted); }
.rec-list .balls { gap: 5px; }

/* --- 패턴 ------------------------------------------------------------------- */
.pair-list { grid-template-columns: 1fr; }
.pair-list li {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 0; border-top: 1px solid var(--border);
}
.pair-list li:first-child { border-top: 0; }
.pair-rank { width: 22px; font-size: 13px; color: var(--muted); font-weight: 700; }
.pair-count { margin-left: auto; font-weight: 700; font-variant-numeric: tabular-nums; }

/* --- 추이: 번호 선택 그리드 ---------------------------------------------------- */
.picker { display: grid; grid-template-columns: repeat(9, 1fr); gap: 6px; }
.picker button {
  aspect-ratio: 1; border-radius: 50%;
  border: 1.5px solid var(--border); background: var(--surface-2);
  font-size: 13px; font-weight: 700; padding: 0;
  font-variant-numeric: tabular-nums;
}
.picker button[aria-pressed="true"] { border-color: transparent; color: #fff; text-shadow: 0 1px 1px rgba(0, 0, 0, .3); }
.row-actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* --- 토스트 ----------------------------------------------------------------- */
.toast {
  position: fixed; left: 50%; transform: translateX(-50%);
  bottom: calc(var(--nav-h) + 16px + env(safe-area-inset-bottom)); z-index: 50;
  display: flex; align-items: center; gap: 12px;
  max-width: calc(100% - 32px);
  padding: 10px 14px; border-radius: 12px;
  background: #1f2329; color: #fff; font-size: 14px; box-shadow: 0 4px 16px rgba(0, 0, 0, .25);
}
.toast button { border: 0; background: transparent; color: #ffcdd2; font-weight: 800; padding: 4px; }

/* ============================================================================
 * 태블릿 (720px+): 카드 2열
 * ========================================================================== */
@media (min-width: 720px) {
  main { padding-left: 24px; padding-right: 24px; }
  .grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; }
  .segmented { grid-template-columns: repeat(4, 1fr); }
  /* 순위가 위→아래로 이어지도록 열 우선 배치 (1~8 | 9~15) */
  .pair-list { grid-template-columns: repeat(2, 1fr); grid-template-rows: repeat(8, auto); grid-auto-flow: column; column-gap: 20px; }
  .pair-list li:nth-child(9) { border-top: 0; }
  .picker { grid-template-columns: repeat(15, 1fr); }
  .metric b { font-size: 18px; }
}

/* ============================================================================
 * 데스크톱 (960px+): 필터 사이드바 + 상단 탭
 * ========================================================================== */
@media (min-width: 960px) {
  .range-chip { display: none; }
  /* 상단 바 내용을 아래 레이아웃(최대 1280px) 왼쪽 끝에 맞춘다 */
  .topbar { padding-left: max(24px, calc((100vw - 1280px) / 2 + 24px)); }
  .layout {
    display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 24px;
    padding: 0 24px;
  }
  .filters, .filters.open {
    display: grid; gap: 16px; align-content: start;
    position: sticky; top: calc(var(--topbar-h) + 20px); align-self: start;
    margin-top: 20px; border: 1px solid var(--border); border-radius: var(--radius);
    box-shadow: var(--shadow);
  }
  main { padding: 20px 0 40px; }
  .nav {
    position: sticky; top: var(--topbar-h); z-index: 20;
    display: flex; gap: 4px; height: auto;
    margin: -20px 0 16px; padding: 12px 0 10px;
    background: var(--bg); border-top: 0; border-bottom: 1px solid var(--border);
  }
  .nav a {
    flex-direction: row; gap: 6px; padding: 8px 14px; border-radius: 999px; font-size: 14px;
  }
  .nav svg { width: 18px; height: 18px; }
  .nav a:hover { background: var(--surface-2); }
  .nav a[aria-current="page"] { background: var(--primary); color: var(--primary-contrast); }
  .toast { bottom: 24px; }
  .heatmap-hint { display: none; }
}