:root {
  --bg: #f4f3ef;
  --surface: #fbfaf7;
  --surface-2: #efede7;
  --border: #e3e0d8;
  --text: #24231f;
  --muted: #7a776f;
  --accent: #2d6a5f;
  --accent-hover: #255a50;
  --accent-soft: #e2ece9;
  --danger: #b4493a;
  --radius: 16px;
  --shadow: 0 1px 2px rgba(40, 36, 28, .04), 0 4px 18px rgba(40, 36, 28, .04);
  color-scheme: light;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "IBM Plex Sans Thai", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.5;
}
button, input, select, textarea { font: inherit; color: inherit; }
[hidden] { display: none !important; }

/* ---------- header ---------- */
.top { max-width: 1180px; margin: 0 auto; padding: 28px 16px 8px; }
.brand { display: flex; gap: 14px; align-items: center; }
.logo {
  width: 42px; height: 42px; border-radius: 12px; flex: none;
  background: var(--accent) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'%3E%3Cpath fill='%23fff' d='M7 7h7v7H7zM18 7h7v7h-7zM7 18h7v7H7zM18 18h3v3h-3zM22 22h3v3h-3zM18 23h3v2h-3zM23 18h2v3h-2z'/%3E%3C/svg%3E") center/26px no-repeat;
}
h1 { font-size: 22px; font-weight: 600; margin: 0; letter-spacing: -.01em; }
h2 { font-size: 17px; font-weight: 600; margin: 0; }
.sub { margin: 0; color: var(--muted); font-size: 14px; }
.mini { font-size: 13px; color: var(--muted); }

/* ---------- layout ---------- */
.layout {
  max-width: 1180px; margin: 0 auto; padding: 12px 16px 24px;
  display: grid; gap: 16px;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  grid-template-areas: "input preview" "formats preview" "gallery gallery" "history history";
  grid-template-rows: auto 1fr auto auto;
}
.input-card { grid-area: input; }
.formats-card { grid-area: formats; align-self: start; }
.preview-card { grid-area: preview; position: sticky; top: 12px; align-self: start; }
.gallery-card { grid-area: gallery; }
.history-card { grid-area: history; }
@media (max-width: 860px) {
  .layout { grid-template-columns: minmax(0, 1fr); grid-template-areas: "input" "preview" "formats" "gallery" "history"; grid-template-rows: none; }
  .preview-card { position: static; }
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
  min-width: 0;
}

/* ---------- tabs ---------- */
.tabs { display: flex; gap: 6px; overflow-x: auto; padding-bottom: 2px; margin-bottom: 14px; scrollbar-width: none; }
.tabs::-webkit-scrollbar { display: none; }
.tab {
  border: 1px solid var(--border); background: transparent; border-radius: 999px;
  padding: 7px 14px; font-size: 14px; white-space: nowrap; cursor: pointer; color: var(--muted);
}
.tab:hover { color: var(--text); background: var(--surface-2); }
.tab.active { background: var(--text); color: #fff; border-color: var(--text); }

.tpl-form { display: grid; gap: 10px; margin-bottom: 12px; }
.tpl-form label, .set-grid label { display: grid; gap: 4px; font-size: 13px; color: var(--muted); }
.row2 { display: grid; grid-template-columns: 1fr auto; gap: 10px; align-items: end; }
input:not([type=checkbox]):not([type=color]):not([type=range]):not([type=file]), select {
  width: 100%; border: 1px solid var(--border); background: #fff; border-radius: 10px;
  padding: 10px 12px; font-size: 15px; color: var(--text); outline: none;
}
input:focus, select:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
label.check { display: flex !important; align-items: center; gap: 8px; color: var(--text) !important; font-size: 14px !important; cursor: pointer; min-height: 42px; }
input[type=checkbox] { width: 18px; height: 18px; accent-color: var(--accent); }

/* ---------- textarea ---------- */
.input-wrap { border: 1px solid var(--border); background: #fff; border-radius: 14px; transition: box-shadow .15s, border-color .15s; }
.input-wrap:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
textarea {
  display: block; width: 100%; border: 0; background: transparent; resize: vertical; min-height: 110px;
  padding: 14px 14px 6px; font-size: 17px; outline: none; box-shadow: none !important;
}
.input-tools { display: flex; align-items: center; gap: 6px; padding: 6px 8px 8px 14px; }
.count { flex: 1; font-size: 12px; color: var(--muted); }

/* ---------- buttons ---------- */
button { cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: .45; }
.ghost {
  border: 1px solid var(--border); background: var(--surface); border-radius: 12px;
  padding: 10px 14px; min-height: 44px; font-size: 15px;
}
.ghost:hover:not(:disabled) { background: var(--surface-2); }
.ghost.sm { min-height: 34px; padding: 5px 12px; font-size: 13px; border-radius: 9px; }
.primary {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 0; background: var(--accent); color: #fff; border-radius: 12px;
  padding: 12px 18px; min-height: 48px; font-size: 16px; font-weight: 500;
}
.primary:hover:not(:disabled) { background: var(--accent-hover); }
.primary.alt { background: var(--text); }
.primary.alt:hover:not(:disabled) { background: #000; }
.primary svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* ---------- format chips ---------- */
.fmt-label { font-size: 13px; color: var(--muted); margin: 10px 0 6px; }
.chips { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; }
.chip {
  position: relative; border: 1px solid var(--border); background: #fff; border-radius: 12px;
  padding: 9px 12px; min-height: 58px; text-align: left; display: grid; align-content: center; gap: 1px;
}
.c-name { font-size: 15px; font-weight: 600; line-height: 1.3; }
.c-use { font-size: 12.5px; color: var(--muted); line-height: 1.35; }
.chip.active .c-use { color: rgba(255,255,255,.82); }
.chip.bad .c-use { color: #c4c0b7; }
.chip.bad.active .c-use { color: rgba(255,255,255,.85); }
.legend { display: inline-flex; align-items: center; gap: 6px; }
.rec-dot { width: 10px; height: 10px; border-radius: 50%; background: #f2c14e; display: inline-block; }
.chip:hover { border-color: #c9c5bb; }
.chip.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.chip.bad { color: #b3afa6; background: transparent; }
.chip.bad.active { background: #b3afa6; border-color: #b3afa6; color: #fff; }
.chip .rec {
  position: absolute; top: -8px; right: -6px; background: #f2c14e; color: #3b2f0b;
  font-size: 10px; font-weight: 600; padding: 1px 6px; border-radius: 999px; line-height: 16px;
}
.hint { margin: 10px 0 0; font-size: 13px; color: var(--muted); min-height: 20px; }

/* ---------- settings ---------- */
.settings { margin-top: 14px; border-top: 1px dashed var(--border); padding-top: 12px; }
.settings summary { cursor: pointer; font-size: 14px; color: var(--muted); padding: 6px 0; user-select: none; }
.settings summary:hover { color: var(--text); }
.set-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 16px; margin: 10px 0 12px; align-items: start; }
@media (max-width: 480px) { .set-grid { grid-template-columns: 1fr; } }
input[type=color] { width: 100%; height: 42px; border: 1px solid var(--border); border-radius: 10px; padding: 3px; background: #fff; cursor: pointer; }
input[type=range] { width: 100%; accent-color: var(--accent); height: 42px; }
input[type=file] { font-size: 13px; max-width: 100%; }
.logo-row { display: flex; gap: 8px; align-items: center; min-height: 42px; }
.seg { display: flex; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; background: #fff; margin-top: 4px; }
.seg button { flex: 1; border: 0; background: transparent; padding: 9px 4px; min-height: 40px; font-size: 14px; }
.seg button + button { border-left: 1px solid var(--border); }
.seg button.on { background: var(--text); color: #fff; }
.is-bar .qr-only, .is-2d .bar-only { display: none !important; }

/* ---------- preview ---------- */
.preview-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.badge { background: var(--accent-soft); color: var(--accent); font-weight: 600; font-size: 13px; padding: 4px 10px; border-radius: 999px; }
.preview {
  position: relative; display: grid; place-items: center; min-height: 340px;
  background: var(--surface-2); border-radius: 14px; padding: 20px; overflow: hidden;
}
.preview.ready { cursor: copy; }
.preview.checker {
  background-color: #fff;
  background-image: linear-gradient(45deg, #eee 25%, transparent 25%), linear-gradient(-45deg, #eee 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #eee 75%), linear-gradient(-45deg, transparent 75%, #eee 75%);
  background-size: 18px 18px; background-position: 0 0, 0 9px, 9px -9px, -9px 0;
}
.stage { display: grid; place-items: center; width: 100%; }
.stage > img {
  display: block; max-width: 100%; max-height: 320px; width: auto; height: auto;
  border-radius: 6px; box-shadow: 0 2px 10px rgba(0,0,0,.06); transition: transform .12s;
}
.stage img.pixel { image-rendering: pixelated; }
.preview.ready:hover img { transform: scale(1.015); }
.preview.flash img { animation: flash .45s; }
@keyframes flash { 0% { filter: brightness(1); } 30% { filter: brightness(.82); } 100% { filter: brightness(1); } }
.tap-hint {
  position: absolute; bottom: 10px; left: 50%; transform: translateX(-50%);
  font-size: 12px; color: var(--muted); background: rgba(255,255,255,.85); padding: 3px 10px; border-radius: 999px;
  opacity: 0; transition: opacity .15s; pointer-events: none;
}
.preview.ready:hover .tap-hint { opacity: 1; }
.empty { text-align: center; color: var(--muted); }
.empty p { margin: 10px 0 0; font-size: 15px; }
.empty-icon {
  width: 64px; height: 64px; margin: 0 auto; border-radius: 16px; border: 2px dashed #cfcbc1;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'%3E%3Cpath fill='%23cfcbc1' d='M7 7h7v7H7zM18 7h7v7h-7zM7 18h7v7H7zM18 18h3v3h-3zM22 22h3v3h-3z'/%3E%3C/svg%3E") center/34px no-repeat;
}
.err { text-align: center; color: var(--danger); max-width: 340px; font-size: 15px; }
.err small { display: block; color: var(--muted); margin-top: 6px; font-size: 13px; }

.actions { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 14px; }
.actions .ghost { min-height: 44px; }
.actions:has(#shareBtn:not([hidden])) { grid-template-columns: 1fr 1fr; }
.kbd-hint { margin: 10px 0 0; }
kbd { font-family: "IBM Plex Mono", monospace; font-size: 11px; background: #fff; border: 1px solid var(--border); border-bottom-width: 2px; border-radius: 5px; padding: 0 5px; }
@media (hover: none) { .kbd-hint { display: none; } }

/* ---------- gallery ---------- */
.sec-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 10px; }
.g-item {
  border: 1px solid var(--border); background: #fff; border-radius: 12px; padding: 10px;
  display: grid; grid-template-rows: 120px auto auto; gap: 8px; text-align: left; transition: border-color .12s, transform .12s;
}
.g-item:hover { border-color: var(--accent); transform: translateY(-1px); }
.g-item.active { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.g-img { display: grid; place-items: center; overflow: hidden; }
.g-img canvas { max-width: 100%; max-height: 120px; image-rendering: pixelated; }
.g-img .no { font-size: 12px; color: #b3afa6; text-align: center; padding: 0 6px; }
.g-name { font-size: 14px; font-weight: 600; line-height: 1.3; }
.g-use { font-size: 12px; color: var(--muted); line-height: 1.35; margin-top: -6px; }
.g-item.bad { background: transparent; }
.g-item.bad .g-name { color: #b3afa6; }

/* ---------- history ---------- */
.hist-tools { display: flex; gap: 8px; align-items: center; }
.hist-tools input { width: 180px !important; padding: 6px 10px !important; font-size: 14px !important; }
.history { list-style: none; padding: 0; margin: 10px 0 0; display: grid; gap: 6px; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.h-item { min-width: 0;
  display: flex; align-items: center; gap: 8px; background: #fff; border: 1px solid var(--border);
  border-radius: 12px; padding: 6px 6px 6px 12px; min-height: 52px;
}
.h-item:hover { border-color: #c9c5bb; }
.h-main { flex: 1; min-width: 0; border: 0; background: transparent; text-align: left; padding: 4px 0; }
.h-label { display: block; font-size: 13px; font-weight: 600; color: var(--accent); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.h-text { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: 15px; }
.h-meta { font-size: 12px; color: var(--muted); }
.h-btn { border: 0; background: transparent; width: 36px; height: 36px; border-radius: 9px; color: #b3afa6; font-size: 16px; flex: none; }
.h-btn:hover { background: var(--surface-2); color: var(--text); }
.h-btn.pinned { color: #d9a21b; }
.h-empty { color: var(--muted); font-size: 14px; padding: 8px 0; }

.foot { text-align: center; color: var(--muted); font-size: 13px; padding: 8px 16px 32px; }

/* ---------- toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px);
  background: var(--text); color: #fff; padding: 10px 18px; border-radius: 12px; font-size: 15px;
  opacity: 0; pointer-events: none; transition: opacity .18s, transform .18s; z-index: 10; max-width: calc(100% - 32px);
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.bad { background: var(--danger); }

/* ---------- หลายอัน ---------- */
.split-row { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; margin-top: 10px; }
.split-row .seg { margin-top: 0; flex: 1; min-width: 260px; }
.split-tip { flex-basis: 100%; margin: 0; }
.split-tip code { font-family: "IBM Plex Mono", monospace; font-size: 12px; background: var(--surface-2); padding: 1px 6px; border-radius: 5px; }
.preview.batch { display: block; max-height: 560px; overflow-y: auto; padding: 12px; cursor: default; }
.preview.batch .stage { display: block; place-items: normal; justify-items: normal; }
.preview.batch .err { max-width: none; margin-bottom: 10px; font-size: 14px; }
.b-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 8px; }
.is-bar .b-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
.b-item {
  position: relative; background: #fff; border: 1px solid var(--border); border-radius: 12px;
  padding: 8px; display: grid; grid-template-rows: 1fr auto; gap: 6px; cursor: copy; min-height: 120px;
  transition: border-color .12s, transform .12s;
}
.b-item:hover { border-color: var(--accent); }
.b-item img { width: 100%; height: 120px; object-fit: contain; display: block; }
.b-item img.pixel { image-rendering: pixelated; }
.b-text { font-size: 12px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; text-align: center; padding: 0 18px; }
.b-no { position: absolute; top: 6px; left: 6px; font-size: 11px; color: var(--muted); background: var(--surface-2); border-radius: 6px; padding: 0 5px; line-height: 18px; z-index: 1; }
.b-save {
  position: absolute; right: 4px; bottom: 4px; width: 30px; height: 30px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--surface); font-size: 15px; line-height: 1; color: var(--text);
}
.b-save:hover { background: var(--accent); color: #fff; border-color: var(--accent); }
/* โหมดพอดีกรอบ (จำนวนน้อย) */
.b-grid.fit { gap: 10px; }
.b-grid.fit .b-item { min-height: 0; padding: 12px; }
.b-grid.fit .b-item img { height: var(--img-h); }
.preview.batch:has(.b-grid.fit) { min-height: 0; }
.b-grid.fit .b-err { height: var(--img-h); }
.b-grid.fit .b-text { font-size: 13px; }
.b-item.bad { cursor: default; background: transparent; border-style: dashed; }
.b-err { display: grid; place-items: center; height: 120px; font-size: 13px; color: var(--danger); }
.is-batch .kbd-hint, .is-batch #tapHint { display: none; }

/* ---------- หัวข้อ / ชื่อ ---------- */
.labels { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 12px; }
.labels label { display: grid; gap: 4px; }
.lab-title { font-size: 13px; color: var(--text); font-weight: 500; display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.lab-ico { width: 20px; height: 20px; border-radius: 6px; background: var(--accent-soft); color: var(--accent); display: inline-grid; place-items: center; font-size: 12px; font-weight: 600; }
.opt { font-weight: 400; color: var(--muted); font-size: 12px; }
@media (max-width: 560px) { .labels { grid-template-columns: 1fr; } }

/* ---------- แถบปุ่มด้านล่าง (มือถือ) ---------- */
.mbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 9;
  display: none; gap: 8px; align-items: center;
  padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
  background: rgba(251, 250, 247, .94); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-top: 1px solid var(--border);
}
.mbar .primary { flex: 1; min-height: 48px; padding: 10px 12px; }
.mbar-thumb {
  width: 48px; height: 48px; flex: none; border-radius: 10px; border: 1px solid var(--border);
  background: #fff center/contain no-repeat; image-rendering: pixelated;
}
#installBtn { margin-left: 6px; }

/* ---------- มือถือ ---------- */
@media (max-width: 860px) {
  body { padding-bottom: env(safe-area-inset-bottom); }
  .mbar:not([hidden]) { display: flex; }
  body:has(.mbar:not([hidden])) .foot { padding-bottom: 96px; }
  .top { padding: calc(14px + env(safe-area-inset-top)) 16px 4px; }
  .sub { font-size: 13px; }
  .layout { gap: 12px; padding-top: 8px; }
  .card { padding: 14px; border-radius: 14px; }
  textarea { min-height: 72px; }
  /* กัน iOS ซูมเวลาแตะช่องกรอก */
  textarea, input:not([type=checkbox]):not([type=color]):not([type=range]):not([type=file]), select { font-size: 16px !important; }
  .chips { grid-template-columns: 1fr 1fr; gap: 6px; }
  .chip { min-height: 54px; padding: 8px 10px; }
  .c-name { font-size: 14px; }
  .c-use { font-size: 12px; }
  .preview { min-height: 240px; padding: 14px; }
  .stage img { max-height: 300px; }
  .preview.batch { max-height: min(62vh, 480px); }
  .b-grid, .is-bar .b-grid { grid-template-columns: 1fr 1fr; gap: 6px; }
  .b-item img, .b-err { height: 96px; }
  .split-row .seg { min-width: 0; flex-basis: 100%; }
  .actions { grid-template-columns: 1fr 1fr; }
  .actions .primary { min-height: 52px; padding: 10px; font-size: 15px; }
  .actions .primary svg { display: none; }
  .actions .ghost { font-size: 14px; padding: 8px; }
  #shareBtn { grid-column: 1 / -1; }
  .gallery { grid-template-columns: 1fr 1fr; }
  .g-item { grid-template-rows: 96px auto auto; }
  .g-img canvas { max-height: 96px; }
  .hist-tools { width: 100%; }
  .hist-tools input { flex: 1; width: auto !important; }
  .history { grid-template-columns: minmax(0, 1fr); }
  .h-btn { width: 40px; height: 40px; }
  .toast { bottom: calc(84px + env(safe-area-inset-bottom)); }
}
@media (hover: none) {
  .tap-hint { opacity: 1 !important; position: static; transform: none; background: none; padding: 8px 0 0; }
  button, .chip, .g-item { -webkit-tap-highlight-color: transparent; }
  .chip:active, .g-item:active, .primary:active, .ghost:active { transform: scale(.97); }
}