:root {
  --bg: #13112a;
  --surface: #1d1a3c;
  --surface-2: #26224d;
  --border: #353066;
  --text: #ecebff;
  --muted: #9d99cc;
  --accent: #8f86ff;      /* C64 light blue */
  --accent-strong: #a9a2ff;
  --accent-ink: #12102a;
  --ok: #7fdc6a;
  --warn: #ffc95c;
  --danger: #ff7a7a;
  --radius: 12px;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --display: "Chakra Petch", "Inter", system-ui, sans-serif;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f3f2fb;
    --surface: #ffffff;
    --surface-2: #eceaf9;
    --border: #d9d6ef;
    --text: #1c1938;
    --muted: #625e8a;
    --accent: #5a4fd6;
    --accent-strong: #4a40c2;
    --accent-ink: #ffffff;
    --ok: #2e9b3a;
    --warn: #b77900;
    --danger: #cf3a3a;
    color-scheme: light;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 "Inter", system-ui, sans-serif;
  padding-bottom: 96px;
}

a { color: var(--accent-strong); }

.top {
  padding: 28px 16px 8px;
  max-width: 1040px;
  margin: 0 auto;
}
.top h1 {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(26px, 4vw, 34px);
  letter-spacing: 0.02em;
  margin: 0;
}
.top h1::before {
  content: "";
  display: inline-block;
  width: 0.55em; height: 0.85em;
  background: var(--accent);
  margin-right: 0.35em;
  vertical-align: -0.08em;
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .top h1::before { animation: none; } }
.sub { margin: 4px 0 0; color: var(--muted); }

main { max-width: 1040px; margin: 0 auto; padding: 8px 16px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px 20px;
  margin: 14px 0;
}
.card h2 {
  font-family: var(--display);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin: 0 0 12px;
  display: flex; align-items: center; gap: 10px;
}
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; flex-wrap: wrap; }
.card-head h2 { margin: 0; }
.head-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.columns { display: grid; grid-template-columns: 1.15fr 1fr; gap: 14px; }
.columns .card { margin: 0; }
.columns { margin: 14px 0; }
@media (max-width: 820px) { .columns { grid-template-columns: 1fr; } }

.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--muted); flex: none; }
.dot.ok { background: var(--ok); box-shadow: 0 0 0 4px color-mix(in srgb, var(--ok) 22%, transparent); }
.dot.warn { background: var(--warn); }

.grid3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.grid2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
@media (max-width: 700px) { .grid3, .grid2 { grid-template-columns: 1fr; } }

.field { display: flex; flex-direction: column; gap: 5px; min-width: 0; }
.field > span { font-size: 13px; font-weight: 500; color: var(--muted); }
.field em { font-style: normal; opacity: 0.8; }

select, input[type="text"], input:not([type]) {
  font: inherit;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  min-width: 0;
  width: 100%;
}
select:focus-visible, input:focus-visible, .btn:focus-visible, .drop:focus-visible, .slots button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.mono { font-family: var(--mono); }
input.mono { text-transform: uppercase; }
input.invalid { border-color: var(--danger); }

.btn {
  font: 600 14px/1 "Inter", system-ui, sans-serif;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s, border-color 0.15s, transform 0.05s;
}
.btn:hover:not(:disabled) { border-color: var(--accent); }
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.primary:hover:not(:disabled) { background: var(--accent-strong); }
.btn.ghost { background: transparent; }
.btn.danger-ghost { background: transparent; color: var(--danger); border-color: color-mix(in srgb, var(--danger) 45%, var(--border)); }
.btn.danger-ghost:hover:not(:disabled) { border-color: var(--danger); }
.btn.small { padding: 7px 10px; font-size: 13px; }

.row-actions { display: flex; align-items: center; gap: 12px; margin-top: 14px; flex-wrap: wrap; }
.hint { color: var(--muted); font-size: 13px; }
p.hint { margin: 10px 0 0; }

.banner { border-radius: var(--radius); padding: 14px 18px; margin: 14px 0; }
.banner.danger { background: color-mix(in srgb, var(--danger) 14%, var(--surface)); border: 1px solid color-mix(in srgb, var(--danger) 50%, transparent); }

/* drop zone */
.drop {
  display: flex; align-items: center; justify-content: center; gap: 12px;
  border: 1.5px dashed var(--border);
  border-radius: 10px;
  padding: 22px 16px;
  color: var(--muted);
  cursor: pointer;
  text-align: center;
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}
.drop:hover, body.dragging .drop { border-color: var(--accent); color: var(--text); background: color-mix(in srgb, var(--accent) 8%, transparent); }
.drop strong { color: var(--text); }

.file-info { margin-top: 14px; }
.file-name { display: flex; align-items: center; gap: 10px; font-weight: 600; word-break: break-all; }
.tag {
  font: 600 11px/1 var(--mono);
  letter-spacing: 0.06em;
  padding: 5px 7px;
  border-radius: 5px;
  background: var(--accent);
  color: var(--accent-ink);
  flex: none;
}
.facts { display: grid; grid-template-columns: max-content 1fr; gap: 4px 14px; margin: 10px 0 0; font-size: 14px; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; font-family: var(--mono); font-size: 13px; }

.notice {
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 14px;
  background: color-mix(in srgb, var(--warn) 13%, transparent);
  border: 1px solid color-mix(in srgb, var(--warn) 45%, transparent);
}
.notice.error { background: color-mix(in srgb, var(--danger) 13%, transparent); border-color: color-mix(in srgb, var(--danger) 50%, transparent); }
.notice button { margin-left: 8px; }

.actions { margin-top: 16px; border-top: 1px solid var(--border); padding-top: 14px; }
.action-row { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; flex-wrap: wrap; }

.settings { margin-top: 8px; border: 1px solid var(--border); border-radius: 10px; padding: 0 14px; }
.settings[open] { padding-bottom: 14px; }
.settings summary { cursor: pointer; padding: 11px 0; font-weight: 600; font-size: 14px; }
.settings .grid2 { margin-top: 4px; }
.check { display: flex; align-items: center; gap: 8px; margin-top: 12px; font-size: 14px; }

.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; width: max-content; }
.seg label { padding: 7px 14px; cursor: pointer; font-size: 14px; background: var(--surface-2); }
.seg label + label { border-left: 1px solid var(--border); }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg label:has(input:checked) { background: var(--accent); color: var(--accent-ink); font-weight: 600; }
.seg label:has(input:focus-visible) { outline: 2px solid var(--accent); outline-offset: -2px; }

/* slots */
.slots {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 6px;
  max-height: 410px; overflow-y: auto;
}
.slots button {
  width: 100%;
  display: flex; align-items: baseline; gap: 8px;
  text-align: left;
  font: 13px/1.3 "Inter", system-ui, sans-serif;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid transparent;
  border-radius: 7px;
  padding: 7px 9px;
  cursor: pointer;
  min-width: 0;
}
.slots button:hover { border-color: var(--border); }
.slots button[aria-pressed="true"] { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 18%, var(--surface-2)); }
.slots .num { font: 600 12px var(--mono); color: var(--accent-strong); min-width: 1.6em; }
.slots .nm { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; min-width: 0; }
.slots .nm.empty { color: var(--muted); font-style: italic; }
.slots li.ef .num { color: var(--muted); }
.slot-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }

/* log */
.log {
  margin: 0;
  max-height: 220px;
  min-height: 70px;
  overflow: auto;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  font: 12.5px/1.55 var(--mono);
  white-space: pre-wrap;
  word-break: break-word;
}
.log .err { color: var(--danger); }
.log .ok { color: var(--ok); }
.log .t { color: var(--muted); }

.foot { color: var(--muted); font-size: 13px; padding: 10px 2px 20px; }

/* progress dock */
.dock {
  position: fixed; left: 0; right: 0; bottom: 0;
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  backdrop-filter: blur(8px);
  border-top: 1px solid var(--border);
  padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
  z-index: 10;
}
.dock-inner { max-width: 1040px; margin: 0 auto; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px 14px; align-items: center; }
.dock-text { display: flex; gap: 12px; align-items: baseline; flex-wrap: wrap; min-width: 0; }
.dock-text .mono { color: var(--muted); font-size: 13px; }
.bar { grid-column: 1; height: 8px; border-radius: 4px; background: var(--surface-2); overflow: hidden; }
.bar > div { height: 100%; width: 0; background: var(--accent); transition: width 0.2s linear; }
.dock #cancelBtn { grid-column: 2; grid-row: 1 / span 2; }
.dock.done .bar > div { background: var(--ok); }
.dock.failed .bar > div { background: var(--danger); }

dialog {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  padding: 20px 22px;
  max-width: min(440px, calc(100vw - 32px));
}
dialog::backdrop { background: rgb(0 0 0 / 0.5); }
dialog h3 { margin: 0 0 8px; font-family: var(--display); font-size: 19px; }
dialog p { margin: 0 0 18px; color: var(--muted); }
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; }

kbd {
  font: 600 12px var(--mono);
  padding: 1px 6px;
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 4px;
  background: var(--surface-2);
  color: var(--text);
}

.ef-status { margin: -2px 0 12px; font-size: 14px; font-weight: 500; }
.ef-status.unknown { color: var(--muted); font-weight: 400; }
.ef-status.present::before {
  content: "CRT";
  font: 600 11px/1 var(--mono);
  letter-spacing: 0.06em;
  padding: 3px 6px;
  border-radius: 4px;
  margin-right: 8px;
  background: var(--accent);
  color: var(--accent-ink);
  vertical-align: 1px;
}
.ef-status .warn { color: var(--warn); font-weight: 400; }

.slots .nm.efdata { color: var(--muted); }
.slots button[draggable="true"] { cursor: grab; }
.slots li.dragging-src button { opacity: 0.45; }
.slots li.drop-target button {
  border-color: var(--accent);
  border-style: dashed;
  background: color-mix(in srgb, var(--accent) 22%, var(--surface-2));
}
.ef-status .note { color: var(--muted); font-weight: 400; font-size: 13px; }

.emu-field { margin-bottom: 14px; max-width: 360px; }
.slots .emu {
  flex: none;
  font: 600 10px/1 var(--mono);
  letter-spacing: 0.03em;
  padding: 3px 5px;
  border-radius: 4px;
  background: var(--surface);
  color: var(--muted);
  align-self: center;
}
.slots .emu.off { color: var(--warn); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--warn) 55%, transparent); }
.slots button[aria-pressed="true"] .emu { background: color-mix(in srgb, var(--surface) 70%, transparent); }

/* ---------------------------------------------------- Game Boy Flash */
:root {
  --accent: #9bbc0f;          /* DMG screen green */
  --accent-strong: #b5d43a;
  --accent-ink: #0f1f06;
}
@media (prefers-color-scheme: light) {
  :root { --accent: #306230; --accent-strong: #234d23; --accent-ink: #ffffff; }
}

.crumb { margin: 0 0 4px; font-size: 13px; color: var(--muted); }
.crumb a { color: var(--muted); }
.crumb a:hover { color: var(--accent-strong); }
.status-line { margin: 0 0 6px; }
.linkish { font: inherit; color: var(--accent-strong); background: none; border: 0; padding: 0; text-decoration: underline; cursor: pointer; }
.linkish:disabled { opacity: 0.5; cursor: not-allowed; }

.pages { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin: 14px 0; }
.pages .card { margin: 0; }
@media (max-width: 900px) { .pages { grid-template-columns: minmax(0, 1fr); } }
.page .card-head h2 { flex: 1; }
.page .head-actions { flex-wrap: nowrap; }
.page.drop-target { border-color: var(--accent); box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 40%, transparent); }

.page-meta { margin: -4px 0 12px; font-size: 14px; color: var(--muted); }
.page-meta .warn { color: var(--warn); }

.bankmap {
  display: grid;
  grid-template-columns: repeat(16, minmax(0, 1fr));
  gap: 2px;
  padding: 6px;
  border-radius: 8px;
  background: var(--bg);
  border: 1px solid var(--border);
}
.bankmap .cell { aspect-ratio: 1.4; border-radius: 2px; background: var(--surface-2); }
.bankmap .cell.used { background: hsl(var(--h) 55% 52%); }
.bankmap .cell.menu { background: var(--muted); }
.bankmap .cell.first { box-shadow: inset 2px 0 0 rgb(0 0 0 / 0.35); }
.bankmap .cell.hl { outline: 2px solid var(--text); outline-offset: -1px; position: relative; z-index: 1; }
@media (prefers-color-scheme: light) { .bankmap .cell.used { background: hsl(var(--h) 55% 60%); } }

.drop-hint {
  margin: 10px 0 0;
  font-size: 13px;
  color: var(--muted);
  text-align: center;
  padding: 8px;
  border: 1.5px dashed var(--border);
  border-radius: 8px;
}
.page.drop-target .drop-hint { border-color: var(--accent); color: var(--text); }

.romlist { list-style: none; margin: 12px 0 0; padding: 0; display: flex; flex-direction: column; gap: 4px; }
.romlist li {
  display: flex; align-items: center; gap: 10px;
  padding: 7px 8px;
  border-radius: 8px;
  background: var(--surface-2);
  border: 1px solid transparent;
  min-width: 0;
}
.romlist li[draggable="true"] { cursor: grab; }
.romlist li.hl { border-color: var(--accent); }
.romlist li.dragging-src { opacity: 0.45; }
.romlist li.menu-row { background: transparent; border: 1px dashed var(--border); }
.swatch { width: 12px; height: 28px; border-radius: 3px; flex: none; background: hsl(var(--h) 55% 52%); }
.swatch.menu { background: var(--muted); }
.rom-main { display: flex; flex-direction: column; min-width: 0; flex: 1; }
.rom-title { font-weight: 600; font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rom-sub { font-size: 12px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rom-tags { display: flex; gap: 4px; flex: none; }
.badge { font: 600 10px/1 var(--mono); padding: 3px 5px; border-radius: 4px; background: var(--surface); color: var(--muted); }
.badge.gbc { color: var(--accent-strong); }
.badge.sgb { color: var(--warn); }
.rom-acts { display: flex; gap: 2px; flex: none; }
.btn.tiny { padding: 5px 7px; font-size: 12px; min-width: 30px; }
.danger-text { color: var(--danger) !important; }
@media (max-width: 520px) { .rom-tags { display: none; } }

.file-btn { display: inline-flex; align-items: center; }
.file-btn.disabled, .menu-more.disabled summary { opacity: 0.45; pointer-events: none; }
.menu-more { position: relative; }
.menu-more summary { list-style: none; }
.menu-more summary::-webkit-details-marker { display: none; }
.menu-pop {
  position: absolute; right: 0; top: calc(100% + 6px); z-index: 5;
  display: flex; flex-direction: column; min-width: 230px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 10px;
  padding: 6px; box-shadow: 0 10px 30px rgb(0 0 0 / 0.25);
}
.menu-pop button, .menu-pop label {
  font: 500 14px "Inter", system-ui, sans-serif; color: var(--text);
  text-align: left; background: none; border: 0; border-radius: 6px; padding: 9px 10px; cursor: pointer;
}
.menu-pop button:hover, .menu-pop label:hover { background: var(--surface-2); }

.dialog-body p { margin: 0 0 10px; color: var(--muted); }
.dialog-body ul { margin: 0 0 12px; padding-left: 20px; }
.dialog-body li { margin: 2px 0; }
dialog { max-width: min(520px, calc(100vw - 32px)); }

.rename-field { margin: 0 0 12px; }
.rename-field input { font-family: var(--mono); }

.page.rereading .bankmap, .page.rereading .romlist { opacity: 0.55; transition: opacity 0.2s; }
.page.rereading [data-meta]::after { content: " · re-reading…"; color: var(--muted); }

.build { margin: 6px 0 0; font: 12px/1.3 var(--mono); color: var(--muted); }

/* Title-clash dialog: replace or keep both */
.clash-row { padding: 10px 0 12px; border-top: 1px solid var(--border); }
.clash-row:first-child { border-top: 0; padding-top: 2px; }
.clash-head { margin: 0; font-weight: 600; overflow-wrap: anywhere; }
.clash-row .check { margin-top: 8px; }
.clash-title { margin: 6px 0 0 26px; width: calc(100% - 26px); max-width: 260px; font-family: var(--mono); }
.clash-title.dim { opacity: 0.5; }