/* Frew — 蘆葦綠文青品牌系統、行動優先、深色支援（見 docs/品牌視覺系統_BRAND.md） */
:root {
  --bg: #F6F6F0; --card: #FFFFFF; --ink: #232A22; --sub: #8A8F80;
  --line: #DCE2D2; --brand: #7FA94F; --brand-deep: #4E7138; --brand-ink: #fff;
  --accent: #6E9CB8; --warm: #B98E5E; --ok: #4E7138; --warn: #B98E5E; --danger: #B5523E;
  --reed-100: #EEF4E2; --grad-primary: linear-gradient(135deg, #7FA94F, #4E7138);
  --font-serif: "Noto Serif TC","Songti TC",Georgia,serif; --font-mono: "SF Mono","Menlo",monospace;
  --radius: 18px; --shadow: 0 2px 10px rgba(40,50,35,.06);
  --safe-b: env(safe-area-inset-bottom, 0px);
}
@media (prefers-color-scheme: dark) {
  :root[data-theme="auto"] {
    --bg:#1A201A; --card:#232A22; --ink:#EDF0E6; --sub:#9AA28F; --line:#354031;
    --brand:#9CC766; --brand-deep:#6F9A4E; --brand-ink:#1A201A; --accent:#A8CBE0; --warm:#C2A06E;
    --reed-100:#2A3326; --grad-primary:linear-gradient(135deg,#6F9A4E,#9CC766); --shadow:0 2px 10px rgba(0,0,0,.3);
  }
}
:root[data-theme="dark"] {
  --bg:#1A201A; --card:#232A22; --ink:#EDF0E6; --sub:#9AA28F; --line:#354031;
  --brand:#9CC766; --brand-deep:#6F9A4E; --brand-ink:#1A201A; --accent:#A8CBE0; --warm:#C2A06E;
  --reed-100:#2A3326; --grad-primary:linear-gradient(135deg,#6F9A4E,#9CC766); --shadow:0 2px 10px rgba(0,0,0,.3);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, "PingFang TC", "Helvetica Neue", sans-serif;
  background: var(--bg); color: var(--ink); line-height: 1.5;
  font-size: 16px;
}
.content {
  max-width: 560px; margin: 0 auto; padding: 16px 16px calc(88px + var(--safe-b));
  min-height: 100vh;
}
h1 { font-size: 24px; margin: 4px 0 12px; }
h2 { font-size: 17px; margin: 0; }
h1, h2, .hero h1, .page-head h1, .sec-title, .cta-title, .login-title { font-family: var(--font-serif); }
.stat-v, .score-badge, .range-val, .timer-disp { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
a, .link { color: var(--accent); text-decoration: none; cursor: pointer; }
.hint { color: var(--sub); font-size: 13px; }
.note { background: var(--reed-100); border-radius: 10px; padding: 8px 10px; font-size: 14px; margin-top: 6px; }

/* hero / 首頁 */
.hero h1 { margin-bottom: 0; }
.hero .sub { color: var(--sub); margin: 2px 0 14px; }
.cta { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.cta-title { font-weight: 600; font-size: 17px; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin: 12px 0; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 10px 6px; text-align: center; box-shadow: var(--shadow); }
.stat-v { font-size: 18px; font-weight: 700; }
.stat-l { font-size: 11px; color: var(--sub); }

/* card */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; margin-bottom: 12px; box-shadow: var(--shadow); }
.card.warn { border-color: var(--warn); }
.card.nav-row { cursor: pointer; }
.sec-title { display: flex; justify-content: space-between; align-items: baseline; margin: 18px 4px 8px; font-weight: 700; font-size: 15px; }
.page-head { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
.page-head h1 { margin: 0; }
.empty { color: var(--sub); text-align: center; padding: 40px 16px; }
.ver { text-align: center; color: var(--sub); font-size: 12px; margin: 24px 0; }

/* rows */
.row { display: flex; align-items: center; }
.row.between { justify-content: space-between; }
.row.gap { gap: 8px; }
.row.mini { margin-top: 6px; }
.actions { margin-top: 10px; flex-wrap: wrap; }

/* pills / chips */
.pill { background: var(--reed-100); color: var(--brand-deep); border-radius: 999px; padding: 3px 9px; font-size: 12px; white-space: nowrap; }
.pill.ok { background: rgba(127,169,79,.18); color: var(--ok); }
.pill.warn { background: rgba(185,142,94,.20); color: var(--warn); }
.pills { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.score-badge { background: var(--grad-primary); color: #fff; font-weight: 700; border-radius: 10px; padding: 2px 10px; min-width: 28px; text-align: center; }
.chev { color: var(--sub); font-size: 22px; }

/* buttons */
.btn { font: inherit; border: 1px solid var(--line); background: var(--card); color: var(--ink); border-radius: 12px; padding: 10px 14px; cursor: pointer; }
.btn.primary { background: var(--grad-primary); color: #fff; border-color: transparent; font-weight: 600; letter-spacing: 1px; }
.btn.ghost { background: transparent; }
.btn.danger { color: var(--danger); border-color: var(--danger); }
.btn.small { padding: 6px 10px; font-size: 13px; }
.btn.wide { width: 100%; margin-top: 8px; }
.btn:active { transform: scale(.98); }

/* fab */
.fab { position: fixed; right: max(16px, env(safe-area-inset-right)); bottom: calc(80px + var(--safe-b)); width: 56px; height: 56px; border-radius: 50%; background: var(--grad-primary); color: #fff; border: none; font-size: 28px; box-shadow: 0 6px 18px rgba(70,100,50,.32); cursor: pointer; z-index: 30; }

/* tabbar */
.tabbar { position: fixed; left: 0; right: 0; bottom: 0; display: flex; background: var(--card); border-top: 1px solid var(--line); padding-bottom: var(--safe-b); z-index: 40; }
.tab { flex: 1; background: none; border: none; color: var(--sub); display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 8px 0; font-size: 11px; cursor: pointer; }
.tab .ti { display: flex; align-items: center; justify-content: center; height: 24px; }
.tab .ti svg { width: 24px; height: 24px; }
.tab.active { color: var(--brand); }
:root[data-theme="dark"] .tab.active, @media (prefers-color-scheme: dark){ :root[data-theme="auto"] .tab.active { color: var(--brand);} }

/* sheet */
.sheet-back { position: fixed; inset: 0; background: rgba(0,0,0,.35); z-index: 100; opacity: 0; transition: opacity .2s; }
.sheet-back.show { opacity: 1; }
.sheet { position: absolute; left: 0; right: 0; bottom: 0; top: 0; background: var(--bg); transform: translateY(100%); transition: transform .25s; display: flex; flex-direction: column; max-width: 560px; margin: 0 auto; }
.sheet-back.show .sheet { transform: translateY(0); }
.sheet-head { display: flex; align-items: center; justify-content: space-between; padding: calc(10px + env(safe-area-inset-top)) 12px 10px; border-bottom: 1px solid var(--line); background: var(--card); }
.sheet-head h2 { flex: 1; text-align: center; }
.sheet-body { overflow-y: auto; padding: 16px; -webkit-overflow-scrolling: touch; }

/* form */
.form, .form-advanced { display: flex; flex-direction: column; gap: 14px; }
.form-advanced { margin-top: 14px; }
.form-advanced.hidden { display: none; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-weight: 600; font-size: 14px; }
.field input, .field textarea, .field select {
  font: inherit; padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--card); color: var(--ink); width: 100%;
}
.field input[type="range"] { padding: 0; accent-color: var(--brand); }
.range-field .range-val { min-width: 34px; text-align: right; font-weight: 700; color: var(--brand); }
.row.between { gap: 12px; }

/* stars */
.stars { display: flex; gap: 4px; }
.star { background: none; border: none; font-size: 26px; color: var(--line); cursor: pointer; padding: 0; }
.star.on { color: var(--accent); }

/* flavor picker */
.flavor-picker { display: flex; flex-direction: column; gap: 12px; }
.flavor-group-head { font-size: 13px; font-weight: 600; color: var(--sub); margin-bottom: 4px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { font: inherit; font-size: 13px; padding: 6px 10px; border-radius: 999px; border: 1px solid var(--line); background: var(--card); color: var(--ink); cursor: pointer; }
.chip.on { background: var(--brand); color: var(--brand-ink); border-color: var(--brand); }

/* steps editor */
.steps-editor { display: flex; flex-direction: column; gap: 8px; }
.step-row { display: grid; grid-template-columns: 60px 90px 1fr 34px; gap: 6px; align-items: center; }
.step-row input { padding: 8px; }

/* timer */
.timer { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 12px; margin-bottom: 16px; display: flex; align-items: center; justify-content: space-between; }
.timer-disp { font-size: 30px; font-weight: 800; font-variant-numeric: tabular-nums; color: var(--brand); }

/* toast / confirm */
.toast { position: fixed; left: 50%; bottom: calc(96px + var(--safe-b)); transform: translateX(-50%) translateY(10px); background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 999px; font-size: 14px; opacity: 0; transition: all .25s; z-index: 200; }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.modal-back { position: fixed; inset: 0; background: rgba(0,0,0,.4); display: flex; align-items: center; justify-content: center; z-index: 150; padding: 24px; }
.confirm-box { background: var(--card); border-radius: 16px; padding: 20px; max-width: 320px; width: 100%; }
.confirm-box p { margin: 0 0 16px; }

/* compare */
.pick-row { display: flex; align-items: center; gap: 10px; padding: 10px; border-bottom: 1px solid var(--line); }
.pick-row input { width: 20px; height: 20px; }
.compare-table { width: 100%; border-collapse: collapse; margin-top: 12px; font-size: 13px; }
.compare-table th, .compare-table td { border: 1px solid var(--line); padding: 6px 8px; text-align: center; }
.compare-table .rl { text-align: left; color: var(--sub); }
.compare-table tr.diff td { background: rgba(127,169,79,.16); }
.derived { margin: 8px 0 0; padding-left: 18px; }
.derived li { font-size: 14px; margin-bottom: 4px; }
.back { margin-right: 2px; }

/* 同步版：優雅文青登入畫面（毛玻璃卡片 + 背景圖） */
.login-overlay { position: fixed; inset: 0; z-index: 300; display: flex; align-items: center; justify-content: center;
  padding: 28px; background: url("../assets/login-bg.jpg") center/cover no-repeat; }
.login-overlay::before { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(25,35,25,.12) 0%, rgba(25,35,25,.28) 100%); }
.login-card { position: relative; width: 100%; max-width: 360px; padding: 38px 28px 30px; color: #fff;
  background: rgba(255,255,255,.14); -webkit-backdrop-filter: blur(22px) saturate(140%); backdrop-filter: blur(22px) saturate(140%);
  border: 1px solid rgba(255,255,255,.45); border-radius: 26px; box-shadow: 0 14px 44px rgba(0,0,0,.28); }
.login-title { font-family: "Noto Serif TC","Songti TC","Source Han Serif TC",Georgia,serif; font-size: 42px; font-weight: 600; letter-spacing: 1px; margin: 0 0 6px; text-shadow: 0 1px 10px rgba(0,0,0,.25); }
.login-sub { margin: 0 0 28px; font-size: 15px; letter-spacing: 2px; color: rgba(255,255,255,.92); font-family: "Noto Serif TC","Songti TC",Georgia,serif; }
.login-field { position: relative; margin-bottom: 18px; }
.login-field input { width: 100%; box-sizing: border-box; padding: 15px 48px 15px 18px; font-size: 16px; color: #fff;
  background: rgba(255,255,255,.16); border: 1px solid rgba(255,255,255,.5); border-radius: 14px; outline: none; transition: border-color .15s, background .15s; }
.login-field input::placeholder { color: rgba(255,255,255,.72); }
.login-field input:focus { border-color: rgba(255,255,255,.92); background: rgba(255,255,255,.22); }
.login-eye { position: absolute; right: 12px; top: 50%; transform: translateY(-50%); display: flex; padding: 4px;
  background: none; border: none; color: rgba(255,255,255,.8); cursor: pointer; }
.login-eye.on { color: #fff; }
.login-submit { width: 100%; padding: 15px; margin-top: 8px; font-size: 17px; font-weight: 600; letter-spacing: 6px; color: #fff; cursor: pointer;
  background: linear-gradient(135deg, rgba(124,160,108,.92), rgba(84,118,76,.96)); border: 1px solid rgba(255,255,255,.4);
  border-radius: 14px; box-shadow: 0 8px 22px rgba(48,78,40,.32); transition: transform .12s, filter .12s; }
.login-submit:active { transform: scale(.985); filter: brightness(1.06); }
.login-status { margin-top: 16px; min-height: 18px; text-align: center; font-size: 13px; letter-spacing: 1px; color: #fff; text-shadow: 0 1px 4px rgba(0,0,0,.35); }
.thumbs { gap: 8px; }
.thumbs .thumb { width: 64px; height: 64px; border-radius: 8px; overflow: hidden; border: 1px solid var(--line); display: flex; align-items: center; justify-content: center; background: var(--bg); }
.thumbs .thumb img { width: 100%; height: 100%; object-fit: cover; }