/* ---------- 테마 색 ---------- */
:root {
  --bg: #ffffff;
  --bg-soft: #f4f5f8;
  --text: #15181f;
  --text-2: #6b7280;
  --text-3: #9aa1ad;
  --line: #e6e8ee;
  --line-strong: #cfd3dc;
  --primary: #2563eb;
  --primary-dark: #1d4fc4;
  --primary-soft: #eef3ff;
  --good: #15803d;
  --good-soft: #f0faf3;
  --naver: #03c75a;
  --warn-bg: #fff8e6;
  --warn-text: #7a5400;
  --err-bg: #fdecec;
  --err-text: #9b1c1c;
  --info-bg: #eef3ff;
  --info-text: #1e3a8a;
  --font-base: 19px;
  --radius: 12px;
}

:root[data-theme="dark"] {
  --bg: #0e1116;
  --bg-soft: #171b22;
  --text: #eceef2;
  --text-2: #a0a7b4;
  --text-3: #6f7784;
  --line: #242a34;
  --line-strong: #353d4a;
  --primary: #5b8dff;
  --primary-dark: #3f74f0;
  --primary-soft: #19233a;
  --good: #3ccf7a;
  --good-soft: #10231a;
  --naver: #03c75a;
  --warn-bg: #2e2510;
  --warn-text: #ffd98a;
  --err-bg: #341717;
  --err-text: #ff9c9c;
  --info-bg: #19233a;
  --info-text: #b9ccff;
}

:root[data-font="large"] { --font-base: 22px; }
:root[data-font="xlarge"] { --font-base: 25px; }

/* ---------- 기본 ---------- */
* { box-sizing: border-box; }
html { font-size: var(--font-base); background: var(--bg); }
body {
  margin: 0;
  font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
  padding: 0 20px calc(32px + env(safe-area-inset-bottom));
  max-width: 600px;
  margin-inline: auto;
  -webkit-font-smoothing: antialiased;
}
h1 { font-size: 1.5rem; margin: 0 0 6px; letter-spacing: -0.02em; font-weight: 800; }
h2 { font-size: 0.82rem; color: var(--text-2); font-weight: 700; margin: 28px 0 10px; letter-spacing: 0.02em; }
.hint { margin: 0 0 16px; color: var(--text-2); font-size: 0.9rem; }
.card { padding: 0; }

/* ---------- 상단 바 ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 0 20px;
}
.brand { display: flex; align-items: center; gap: 8px; }
.brand-icon { width: 24px; height: 24px; border-radius: 6px; }
.brand-name { font-weight: 700; font-size: 0.95rem; color: var(--text-2); }
.icon-btn {
  display: inline-flex; align-items: center; gap: 6px;
  min-height: 40px; padding: 4px 4px 4px 8px;
  border: none; background: none; color: var(--text-2);
  font: inherit; font-size: 0.88rem; font-weight: 600; cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.icon-btn[aria-expanded="true"] { color: var(--primary); }
.gear { width: 1em; height: 1em; display: inline-block; border-radius: 50%; border: 0.22em dotted currentColor; }

/* ---------- 설정 패널 ---------- */
.settings { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); margin: 0 0 20px; }
.setting-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 0; }
.setting-row + .setting-row { border-top: 1px solid var(--line); }
.setting-label { font-weight: 600; font-size: 0.92rem; white-space: nowrap; }
.seg { display: inline-flex; gap: 6px; }
:root[data-font="large"] .setting-row, :root[data-font="xlarge"] .setting-row { flex-direction: column; align-items: stretch; gap: 8px; }
:root[data-font="large"] .seg, :root[data-font="xlarge"] .seg { display: flex; }
:root[data-font="large"] .seg-btn, :root[data-font="xlarge"] .seg-btn { flex: 1; }
.seg-btn {
  white-space: nowrap; min-height: 40px; padding: 4px 14px;
  border-radius: 999px; border: 1px solid var(--line-strong); background: transparent;
  color: var(--text-2); font: inherit; font-size: 0.88rem; font-weight: 600; cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.seg-btn.on { background: var(--text); border-color: var(--text); color: var(--bg); }

/* ---------- 검색 ---------- */
.search textarea {
  width: 100%; font: inherit; font-size: 1.05rem; padding: 14px 16px;
  border: 1.5px solid var(--line-strong); border-radius: var(--radius);
  background: var(--bg); color: var(--text); resize: none;
}
.search textarea::placeholder { color: var(--text-3); }
.search textarea:focus { outline: none; border-color: var(--primary); }
.row { display: flex; gap: 8px; margin-top: 10px; }
.row.tools .btn { flex: 1; padding-inline: 6px; white-space: nowrap; font-size: 0.9rem; }
.row.main .btn { flex: 1; }

/* ---------- 버튼 ---------- */
.btn {
  display: inline-flex; flex-direction: column; align-items: center; justify-content: center;
  min-height: 54px; padding: 10px 14px; border-radius: var(--radius); border: none;
  font: inherit; font-size: 1rem; font-weight: 700; text-decoration: none; cursor: pointer;
  -webkit-tap-highlight-color: transparent; transition: opacity 0.12s ease;
}
.btn:active { opacity: 0.8; }
.btn.primary { background: var(--primary); color: #fff; }
.btn.secondary, .btn.ghost {
  background: transparent; color: var(--text); border: 1.5px solid var(--line-strong);
  min-height: 50px; font-weight: 600; font-size: 0.95rem;
}
.btn.ghost { color: var(--text-2); }
.btn.big { width: 100%; min-height: 72px; font-size: 1.15rem; margin-top: 16px; }
.btn.naver { background: var(--naver); color: #fff; }
.btn.big small { font-size: 0.78rem; font-weight: 500; opacity: 0.92; margin-top: 3px; }
.btn.tile {
  background: transparent; color: var(--text); border: 1.5px solid var(--line-strong);
  min-height: 58px; font-size: 1rem; font-weight: 600;
}
.btn.tile:active { border-color: var(--primary); color: var(--primary); }
.btn:disabled { opacity: 0.5; }

/* ---------- 상태 메시지 ---------- */
.status {
  margin-top: 14px; padding: 12px 14px; border-radius: var(--radius);
  background: var(--warn-bg); color: var(--warn-text); font-size: 0.9rem;
}
.status.error { background: var(--err-bg); color: var(--err-text); }
.status.loading { background: var(--info-bg); color: var(--info-text); }
.status .bar { height: 6px; border-radius: 999px; background: rgba(127,127,127,0.18); margin-top: 8px; overflow: hidden; }
.status .bar > div { height: 100%; width: 0; background: var(--primary); transition: width 0.3s; }

/* ---------- 결과 ---------- */
.result { margin-top: 28px; }
.using {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 10px;
  padding: 0 0 14px; border-bottom: 1px solid var(--line); font-size: 0.95rem;
}
.using .label { color: var(--text-2); font-size: 0.82rem; }
.using .value { font-weight: 700; word-break: break-all; }
.link {
  background: none; border: none; padding: 0; font: inherit; font-size: 0.82rem;
  color: var(--primary); text-decoration: underline; cursor: pointer; width: 100%; text-align: left;
}
.live .status { margin-top: 14px; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; align-items: center; }
.chips .chips-label { font-size: 0.82rem; color: var(--text-2); width: 100%; }
.chip {
  min-height: 42px; padding: 6px 16px; border-radius: 999px;
  border: 1.5px solid var(--line-strong); background: transparent; color: var(--text);
  font: inherit; font-size: 0.95rem; font-weight: 600; cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.chip.on { background: var(--text); border-color: var(--text); color: var(--bg); }

.summary { margin-top: 20px; padding: 20px 0 4px; border-top: 2px solid var(--text); }
.summary .label { font-size: 0.82rem; color: var(--text-2); font-weight: 700; letter-spacing: 0.02em; }
.summary .mall { font-size: 1.3rem; font-weight: 800; margin-top: 8px; }
.summary .price { font-size: 2.4rem; font-weight: 900; color: var(--good); line-height: 1.05; letter-spacing: -0.03em; margin-top: 2px; }
.summary .product { font-size: 0.9rem; margin-top: 10px; }
.summary .saving { color: var(--text-2); font-size: 0.85rem; margin-top: 4px; }
.summary .btn.big { min-height: 66px; margin-top: 16px; }

.offers { display: flex; flex-direction: column; margin-top: 8px; }
.offers h2 { margin: 26px 0 4px; }
.offers .group-note { font-size: 0.82rem; color: var(--text-2); margin: 0 0 4px; }
.offer {
  display: grid; grid-template-columns: 1fr auto; gap: 2px 12px; align-items: center;
  padding: 14px 0; border-bottom: 1px solid var(--line); color: inherit; text-decoration: none;
}
.offer:last-of-type { border-bottom: none; }
.offer .mall { font-weight: 700; font-size: 1rem; }
.offer .price { font-size: 1.1rem; font-weight: 800; white-space: nowrap; text-align: right; letter-spacing: -0.01em; }
.offer .sub {
  grid-column: 1 / -1; font-size: 0.78rem; color: var(--text-2);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.offer .tag {
  display: inline-block; font-size: 0.7rem; padding: 1px 7px; border-radius: 999px;
  border: 1px solid var(--line-strong); color: var(--text-2); margin-right: 4px; vertical-align: middle;
}
.offer .tag.color { border-color: var(--good); color: var(--good); }

.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.note { font-size: 0.82rem; color: var(--text-2); margin: 20px 0 0; }
.foot { margin-top: 32px; color: var(--text-3); font-size: 0.76rem; text-align: center; }
.preview { display: block; max-width: 100%; max-height: 160px; border-radius: 10px; margin-top: 10px; }