:root {
  --bg: #fbf6ee;
  --surface: #ffffff;
  --soft: #f6ecdc;
  --ink: #2a1f1a;
  --muted: #7b6b60;
  --line: #eadfce;
  --red: #a61e22;
  --red-ink: #ffffff;
  --off: #c0262c;
  --gold: #c9962b;
  --hero1: #8f1a1f;
  --hero2: #c0392f;
  --sat: #2f6fb5;
  --shadow: 0 1px 2px rgba(60, 30, 10, .08), 0 4px 14px rgba(60, 30, 10, .06);
  --nav-h: 62px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16110e;
    --surface: #211a16;
    --soft: #2a211c;
    --ink: #f3e8da;
    --muted: #a8978a;
    --line: #352b25;
    --red: #e0645c;
    --red-ink: #1a0f0d;
    --off: #ff7a70;
    --gold: #e0b04a;
    --hero1: #6e1519;
    --hero2: #9a2a28;
    --sat: #78aee6;
    --shadow: none;
  }
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { background: var(--bg); }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  min-height: 100vh;
}
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }

.appbar {
  position: sticky; top: 0; z-index: 5;
  background: var(--bg);
  padding: calc(10px + env(safe-area-inset-top)) 16px 8px;
  max-width: 560px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
}
.appbar h1 { margin: 0; font-size: 1.15rem; font-weight: 700; letter-spacing: .01em; }
.gear {
  flex: none; width: 40px; height: 40px; margin: -4px -6px -4px 0; display: grid; place-items: center;
  background: none; border: 0; border-radius: 12px; font-size: 1.25rem; line-height: 1;
  filter: grayscale(1) opacity(.7);
}
.gear[aria-current="page"] { filter: none; background: var(--soft); }

main {
  max-width: 560px; margin: 0 auto;
  padding: 4px 16px calc(var(--nav-h) + 28px + env(safe-area-inset-bottom));
  outline: none;
}

.tabs {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 10;
  display: grid; grid-template-columns: repeat(5, 1fr);
  max-width: 560px; margin: 0 auto;
  background: var(--surface);
  border-top: 1px solid var(--line);
  padding-bottom: env(safe-area-inset-bottom);
}
.tabs button {
  background: none; border: 0; padding: 8px 0 7px;
  display: flex; flex-direction: column; align-items: center; gap: 1px;
  font-size: .72rem; color: var(--muted); height: var(--nav-h);
  justify-content: center;
}
.tabs .ti { font-size: 1.3rem; line-height: 1; filter: grayscale(1) opacity(.7); }
.tabs button[aria-current="page"] { color: var(--red); font-weight: 700; }
.tabs button[aria-current="page"] .ti { filter: none; }

/* ---- Hôm nay ---- */
.hero {
  background: linear-gradient(145deg, var(--hero1), var(--hero2));
  color: #fff6e6; border-radius: 22px; padding: 18px 20px 20px;
  box-shadow: var(--shadow); position: relative; overflow: hidden;
}
.hero::after {
  content: ""; position: absolute; right: -50px; top: -50px; width: 190px; height: 190px;
  border-radius: 50%; border: 22px solid rgba(255, 230, 180, .1);
}
.hero-top { display: flex; justify-content: space-between; font-size: .95rem; opacity: .92; }
.hero-day {
  font: 700 6.2rem/1 Georgia, "Times New Roman", serif;
  margin: 6px 0 2px; letter-spacing: -.02em;
}
.hero-lunar { font-size: 1.15rem; font-weight: 600; }
.hero-cc { font-size: .85rem; opacity: .85; margin-top: 4px; }
.hero-cc span { white-space: nowrap; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 0; }
.chip {
  --c: var(--gold);
  display: inline-flex; align-items: center; gap: 4px;
  padding: 4px 11px; border-radius: 999px; font-size: .86rem;
  background: color-mix(in srgb, var(--c) 16%, var(--surface));
  border: 1px solid color-mix(in srgb, var(--c) 45%, transparent);
}
.chip.off { --c: var(--off); font-weight: 600; }
.chip.work { --c: var(--sat); }

.card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 18px; padding: 14px 16px; margin-top: 14px; box-shadow: var(--shadow);
}
.card h2 { margin: 0 0 8px; font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); font-weight: 700; }
.card.alert { border-color: var(--gold); background: color-mix(in srgb, var(--gold) 10%, var(--surface)); }
.term-main { font-size: 1.05rem; }
.term-sub { color: var(--muted); font-size: .9rem; margin-top: 2px; }
.empty { color: var(--muted); font-size: .92rem; padding: 6px 0; }

.rows { list-style: none; margin: 0; padding: 0; }
.row {
  display: flex; align-items: center; gap: 12px; width: 100%;
  background: none; border: 0; text-align: left; padding: 9px 0;
  border-top: 1px solid var(--line);
}
.rows > li:first-child .row { border-top: 0; }
.rows.card { padding: 6px 16px; }
.ico {
  --c: var(--gold);
  flex: none; width: 38px; height: 38px; border-radius: 12px;
  display: grid; place-items: center; font-size: 1.15rem;
  background: color-mix(in srgb, var(--c) 18%, var(--surface));
}
.ico.off { --c: var(--off); }
.row-body { flex: 1; min-width: 0; }
.row-name { font-weight: 600; overflow-wrap: anywhere; }
.row-sub { color: var(--muted); font-size: .84rem; overflow-wrap: anywhere; }
.row-right { flex: none; text-align: right; font-size: .82rem; color: var(--muted); }
.row-right b { display: block; color: var(--ink); font-size: .95rem; }
.badge { display: inline-block; font-size: .7rem; padding: 1px 7px; border-radius: 99px; background: var(--gold); color: #2a1f1a; font-weight: 700; margin-left: 6px; vertical-align: 1px; }

/* ---- Lịch tháng ---- */
.cal-head { display: flex; align-items: center; gap: 6px; margin: 4px 0 10px; }
.cal-title { flex: 1; min-width: 0; text-align: center; }
.cal-title b { font-size: 1.05rem; display: block; white-space: nowrap; }
.cal-title small { color: var(--muted); font-size: .76rem; display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.iconbtn {
  position: relative; width: 38px; height: 42px; display: grid; place-items: center;
  background: var(--surface); border: 1px solid var(--line); border-radius: 12px; font-size: 1.1rem; overflow: hidden;
}
.iconbtn input[type="date"] { position: absolute; inset: 0; opacity: 0; width: 100%; height: 100%; }
.pill {
  background: var(--soft); border: 1px solid var(--line); border-radius: 12px;
  padding: 0 9px; height: 42px; font-size: .84rem; font-weight: 600; white-space: nowrap;
}

.grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 3px; touch-action: pan-y; }
.dow { text-align: center; font-size: .75rem; font-weight: 700; color: var(--muted); padding: 4px 0; }
.dow.we { color: var(--off); }
.cell {
  position: relative; border: 1px solid transparent; border-radius: 12px;
  background: var(--surface); aspect-ratio: 1 / 1.12; padding: 3px 0 0;
  display: flex; flex-direction: column; align-items: center; justify-content: flex-start; gap: 0;
}
.cell .s { font-size: 1.08rem; font-weight: 600; line-height: 1.25; }
.cell .l { font-size: .68rem; color: var(--muted); line-height: 1.2; }
.cell.sat .s { color: var(--sat); }
.cell.sun .s, .cell.off .s { color: var(--off); }
.cell.moon1 .l, .cell.moon15 .l { color: var(--off); font-weight: 700; }
.cell.dim { background: transparent; opacity: .42; }
.cell.today { border-color: var(--red); background: color-mix(in srgb, var(--red) 12%, var(--surface)); }
.cell.sel { box-shadow: inset 0 0 0 2px var(--red); }
.dots { position: absolute; bottom: 4px; display: flex; gap: 2px; }
.dot { width: 5px; height: 5px; border-radius: 50%; background: var(--c, var(--gold)); }
.dot.off { background: var(--off); }

.detail h3 { margin: 0; font-size: 1.1rem; }
.detail .kv { margin: 6px 0 0; color: var(--muted); font-size: .9rem; }
.detail .kv b { color: var(--ink); font-weight: 600; }
.btn {
  border: 1px solid var(--line); background: var(--soft); border-radius: 12px;
  padding: 9px 14px; font-weight: 600; font-size: .92rem;
}
.btn.primary { background: var(--red); border-color: var(--red); color: var(--red-ink); }
.btn.danger { color: var(--off); }
.btn.block { width: 100%; margin-top: 10px; }

/* ---- Ngày đặc biệt ---- */
.search {
  width: 100%; padding: 11px 14px; border-radius: 14px; border: 1px solid var(--line);
  background: var(--surface); margin-bottom: 10px;
}
.filters { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 8px; scrollbar-width: none; }
.filters::-webkit-scrollbar { display: none; }
.fchip {
  flex: none; padding: 6px 13px; border-radius: 999px; font-size: .86rem;
  background: var(--surface); border: 1px solid var(--line);
}
.fchip[aria-pressed="true"] { background: var(--red); border-color: var(--red); color: var(--red-ink); font-weight: 700; }
.fab {
  position: fixed; right: max(18px, calc(50% - 262px)); bottom: calc(var(--nav-h) + 16px + env(safe-area-inset-bottom));
  width: 56px; height: 56px; border-radius: 50%; border: 0; z-index: 9;
  background: var(--red); color: var(--red-ink); font-size: 2rem; line-height: 1;
  box-shadow: 0 6px 18px rgba(0, 0, 0, .28);
}

/* ---- Form ---- */
dialog {
  border: 0; padding: 0; background: var(--bg); color: var(--ink);
  width: 100%; max-width: 560px; max-height: 92vh;
  margin: auto auto 0; border-radius: 22px 22px 0 0;
}
dialog::backdrop { background: rgba(20, 8, 4, .55); }
.form { padding: 18px 16px calc(18px + env(safe-area-inset-bottom)); display: grid; gap: 12px; }
.form h2 { margin: 0; font-size: 1.15rem; }
.form label { display: grid; gap: 4px; font-size: .84rem; color: var(--muted); font-weight: 600; }
.form input[type="text"], .form input[type="number"], .form select, .form textarea {
  width: 100%; padding: 10px 12px; border-radius: 12px; border: 1px solid var(--line);
  background: var(--surface); color: var(--ink); font-size: 1rem; font-weight: 400;
}
.form .row3 { display: grid; grid-template-columns: 1fr 1fr 1.3fr; gap: 8px; }
.form .chk { display: flex; align-items: center; gap: 10px; font-size: .95rem; color: var(--ink); font-weight: 500; }
.form .chk input { width: 20px; height: 20px; accent-color: var(--red); }
.seg { display: grid; grid-template-columns: 1fr 1fr; background: var(--soft); border-radius: 12px; padding: 3px; }
.seg label { display: block; margin: 0; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg span { display: block; text-align: center; padding: 8px 0; border-radius: 10px; font-weight: 600; color: var(--muted); font-size: .92rem; }
.seg input:checked + span { background: var(--surface); color: var(--red); box-shadow: var(--shadow); }
.linkbtn { background: none; border: 0; color: var(--red); font-weight: 600; text-align: left; padding: 2px 0; }
.preview { margin: 0; padding: 10px 12px; border-radius: 12px; background: var(--soft); font-size: .9rem; min-height: 2.6em; }
.err { color: var(--off); font-size: .88rem; margin: 0; min-height: 1.2em; }
.actions { display: flex; gap: 8px; justify-content: flex-end; }
.actions .grow { flex: 1; }

/* ---- Cài đặt ---- */
.set-line { display: flex; justify-content: space-between; gap: 12px; padding: 6px 0; font-size: .95rem; }
.set-line span:first-child { color: var(--muted); }
.btns { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.note { color: var(--muted); font-size: .84rem; margin: 8px 0 0; }

#toast {
  position: fixed; left: 50%; bottom: calc(var(--nav-h) + 24px + env(safe-area-inset-bottom));
  transform: translate(-50%, 20px); opacity: 0; pointer-events: none; z-index: 50;
  background: #2a1f1a; color: #fff6e6; padding: 10px 16px; border-radius: 14px; font-size: .9rem;
  max-width: calc(100% - 32px); transition: opacity .2s, transform .2s;
}
#toast.show { opacity: 1; transform: translate(-50%, 0); }
dialog[open] ~ #toast { z-index: 100; }

/* ---- Thanh báo có bản mới ---- */
#updateBar {
  position: fixed; left: 12px; right: 12px; z-index: 40;
  bottom: calc(var(--nav-h) + 12px + env(safe-area-inset-bottom));
  max-width: 536px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  background: var(--surface); border: 1px solid var(--gold); border-radius: 16px;
  padding: 10px 12px 10px 16px; font-size: .92rem; font-weight: 600; box-shadow: 0 6px 18px rgba(0, 0, 0, .22);
}