:root {
  color-scheme: dark;
  --bg: #090b10;
  --panel: rgba(18, 21, 29, .86);
  --panel-2: #151922;
  --line: rgba(255,255,255,.08);
  --text: #f4f7fb;
  --muted: #8f98a8;
  --accent: #f4f7fb;
  --ok: #55e38f;
  --warn: #ffce66;
  --danger: #ff6b76;
  --radius: 28px;
}
* { box-sizing: border-box; }
html, body { min-height: 100%; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 50% -10%, rgba(88,106,255,.18), transparent 30%),
    radial-gradient(circle at 10% 85%, rgba(45,219,157,.08), transparent 26%),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
button, input, select { font: inherit; }
button { color: inherit; }
.app-shell {
  width: min(980px, calc(100% - 32px));
  min-height: 100vh;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  padding: 28px 0 22px;
}
.brand-row {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 34px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .2em;
}
.brand-dot { width: 9px; height: 9px; border-radius: 50%; background: white; box-shadow: 0 0 18px rgba(255,255,255,.7); }
.device-pill {
  margin-left: auto;
  letter-spacing: 0;
  font-weight: 700;
  color: var(--muted);
  background: rgba(255,255,255,.05);
  border: 1px solid var(--line);
  padding: 8px 11px;
  border-radius: 999px;
}
.device-pill[data-state="connected"] { color: var(--ok); }
.device-pill[data-state="error"] { color: var(--danger); }
.stage { flex: 1; display: grid; place-items: center; padding: 34px 0; }
.panel {
  width: min(720px, 100%);
  background: linear-gradient(180deg, rgba(24,28,38,.95), rgba(14,17,24,.95));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 30px 90px rgba(0,0,0,.38);
  padding: clamp(24px, 5vw, 48px);
}
.page { display: none; animation: pageIn .24s ease both; }
.page.active { display: block; }
@keyframes pageIn { from { opacity: 0; transform: translateY(6px) scale(.995); } to { opacity: 1; transform: none; } }
.eyebrow { color: var(--muted); font-weight: 800; letter-spacing: .16em; font-size: 11px; }
h1 { margin: 10px 0 8px; font-size: clamp(28px, 5vw, 46px); line-height: 1.02; letter-spacing: -.045em; }
.subtle { color: var(--muted); margin: 0 0 30px; }
.firmware-card {
  display: flex; justify-content: space-between; align-items: end; gap: 24px;
  padding: 22px; border: 1px solid var(--line); background: rgba(255,255,255,.035); border-radius: 18px;
  margin-bottom: 16px;
}
.label { display: block; color: var(--muted); font-size: 10px; letter-spacing: .14em; font-weight: 800; margin-bottom: 7px; }
#latestVersion {
  color: var(--ok);
}
.release-meta { color: var(--muted); font-size: 13px; text-align: right; max-width: 280px; }
.primary-action, .secondary-action {
  border: 0; border-radius: 15px; min-height: 50px; cursor: pointer; font-weight: 800;
  transition: transform .15s ease, opacity .15s ease, background .15s ease;
}
.primary-action { width: 100%; background: #f4f7fb; color: #0b0e13; display:flex; justify-content:center; align-items:center; gap:9px; }
.primary-action svg { width:18px; fill:none; stroke:currentColor; stroke-width:2; stroke-linecap:round; stroke-linejoin:round; }
.secondary-action { background: rgba(255,255,255,.06); border:1px solid var(--line); }
.primary-action:hover:not(:disabled), .secondary-action:hover { transform: translateY(-1px); }
.primary-action:disabled { opacity: .35; cursor: not-allowed; }
.palette-header { display:flex; align-items:flex-end; justify-content:space-between; gap:16px; margin-bottom:22px; }
.palette-header h1 { font-size: clamp(26px, 4vw, 38px); margin-bottom: 0; }
.velocity-readout { color: var(--muted); font-size: 12px; font-weight: 800; background: rgba(255,255,255,.05); border:1px solid var(--line); padding:9px 11px; border-radius:999px; white-space:nowrap; }
.palette-grid {
  display:grid; grid-template-columns:repeat(16, 1fr); gap:5px; padding:10px;
  background:#090b10; border:1px solid var(--line); border-radius:18px; margin-bottom:22px;
}
.swatch {
  aspect-ratio:1; border-radius:5px; border:1px solid rgba(255,255,255,.08); cursor:pointer;
  position:relative; min-width:0; padding:0;
}
.swatch.selected::after { content:""; position:absolute; inset:-3px; border:2px solid white; border-radius:7px; box-shadow:0 0 0 2px #090b10; pointer-events:none; }
.palette-controls { display:grid; grid-template-columns:1fr 180px; gap:22px; align-items:start; }
.color-picker-wrap { display:flex; align-items:center; gap:12px; padding:10px 12px; background:rgba(255,255,255,.04); border:1px solid var(--line); border-radius:15px; }
#colorPicker { width:48px; height:40px; border:0; padding:0; background:none; cursor:pointer; }
#colorHex { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-weight:800; }
.side-controls { display:grid; gap:8px; }
.side-controls .secondary-action { width:100%; }
.index-row { display:flex; align-items:center; justify-content:space-between; gap:10px; color:var(--muted); font-weight:700; min-height:44px; padding:0 12px; background:rgba(255,255,255,.04); border:1px solid var(--line); border-radius:13px; }
.index-row select { background:#0d1118; color:var(--text); border:0; border-radius:8px; padding:5px 8px; outline:none; }
.primary-action.compact { min-height:48px; }
.toast { min-height:20px; margin-top:12px; color:var(--muted); font-size:12px; }
.dock {
  align-self:center; display:flex; gap:8px; padding:8px; background:rgba(16,19,27,.88); border:1px solid var(--line);
  backdrop-filter: blur(18px); border-radius:22px; box-shadow:0 18px 50px rgba(0,0,0,.28);
}
.dock-button {
  border:0; background:transparent; border-radius:15px; min-width:112px; min-height:58px; padding:8px 14px;
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:5px; color:var(--muted); cursor:pointer; font-size:10px; font-weight:800;
}
.dock-button svg { width:22px; height:22px; fill:none; stroke:currentColor; stroke-width:1.9; stroke-linecap:round; stroke-linejoin:round; }
#githubButton svg { fill:currentColor; stroke:none; }
.dock-button.active { background:#f4f7fb; color:#0b0e13; }
footer { text-align:center; color:#636b79; font-size:10px; margin-top:12px; letter-spacing:.04em; }
footer span { color:#9ba4b3; }
@media (max-width: 650px) {
  .app-shell { width:min(100% - 18px, 980px); padding-top:16px; }
  .stage { padding:20px 0; }
  .panel { padding:22px 16px; border-radius:22px; }
  .palette-grid { gap:3px; padding:7px; }
  .swatch { border-radius:3px; }
  .palette-controls { grid-template-columns:1fr; }
  .side-controls { grid-template-columns:1fr 1fr; }
  .index-row, .primary-action.compact { grid-column:span 2; }
  .dock { width:100%; justify-content:space-between; }
  .dock-button { min-width:0; flex:1; padding-inline:5px; }
  .dock-button span { font-size:9px; }
  .firmware-card { align-items:flex-start; flex-direction:column; }
  .release-meta { text-align:left; }
}

.device-only-controls {
  display: grid;
  gap: 12px;
}

.device-only-controls[hidden] {
  display: none !important;
}

.brand-logo {
  width: 34px;
  height: 34px;
  display: block;
  flex: 0 0 auto;
}


.cfw-notice {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 12px 0 18px;
  padding: 11px 14px;
  border: 1px solid rgba(79, 172, 254, 0.22);
  border-radius: 12px;
  background: rgba(79, 172, 254, 0.06);
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
}

.cfw-notice strong {
  flex: 0 0 auto;
  color: #4FACFE;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.cfw-notice a {
  color: #4FACFE;
  text-decoration: none;
}

.cfw-notice a:hover {
  text-decoration: underline;
}

.firmware-disclaimer {
  margin: -2px 0 18px;
  font-size: 12px;
  color: var(--muted);
}

@media (max-width: 640px) {
  .cfw-notice {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }
}












.version-block {
  flex: 0 0 auto;
}

.firmware-download-block {
  margin-left: auto;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: flex-end;
  gap: 4px;
}

#downloadButton.download-compact {
  width: auto;
  min-width: 0;
  min-height: 0;
  height: auto;
  padding: 3px 7px;
  font-size: 9px;
  line-height: 1;
  border-radius: 6px;
  flex: 0 0 auto;
  gap: 4px;
}

#downloadButton.download-compact svg {
  width: 11px;
  height: 11px;
}

#releaseMeta {
  margin: 0;
  max-width: none;
  text-align: right;
  white-space: nowrap;
}

@media (max-width: 640px) {
  .firmware-card {
    flex-direction: row;
    align-items: flex-end;
  }

  .firmware-download-block {
    margin-left: auto;
    align-items: flex-end;
  }

  #releaseMeta {
    text-align: right;
  }
}


.device-settings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.device-slider-card {
  display: block;
  padding: 18px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.035);
  border-radius: 16px;
}

.device-slider-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .06em;
}

.device-slider-head strong {
  color: var(--ok);
  font-size: 15px;
  letter-spacing: 0;
}

.device-slider-card input[type="range"] {
  width: 100%;
  margin: 0;
  accent-color: var(--ok);
}

@media (max-width: 700px) {
  .device-settings-grid {
    grid-template-columns: 1fr;
  }
}




.mf64-settings-stack { display:grid; gap:18px; margin-top:24px; }
.settings-card { border:1px solid var(--line); border-radius:16px; padding:20px; background:var(--panel-2, rgba(255,255,255,.025)); }
.rotation-options { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:10px; margin-top:14px; }
.rotation-options label { cursor:pointer; }
.rotation-options input { position:absolute; opacity:0; pointer-events:none; }
.rotation-options span { display:flex; align-items:center; justify-content:center; min-height:48px; border:1px solid var(--line); border-radius:12px; font-weight:700; transition:.15s ease; }
.rotation-options input:checked + span { border-color:var(--accent, #fff); background:rgba(255,255,255,.09); box-shadow:inset 0 0 0 1px currentColor; }
.settings-card small { display:block; margin-top:10px; color:var(--muted); line-height:1.5; }
.device-only-controls { display:flex; gap:10px; align-items:center; }
@media (max-width:620px) { .rotation-options { grid-template-columns:repeat(2,minmax(0,1fr)); } }

.firmware-updater-card {
  margin: 14px 0 18px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255,255,255,.025);
}

.firmware-updater-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.firmware-updater-head > div {
  display: grid;
  gap: 5px;
}

.firmware-updater-head strong {
  font-size: 16px;
}

.dfu-chip {
  padding: 6px 9px;
  border-radius: 999px;
  border: 1px solid rgba(85,227,143,.24);
  background: rgba(85,227,143,.07);
  color: var(--ok);
  font: 800 10px/1 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: .04em;
}

.firmware-source-list {
  display: grid;
  gap: 8px;
}

.firmware-source-option {
  position: relative;
  display: grid;
  grid-template-columns: 18px 1fr;
  align-items: center;
  gap: 11px;
  min-height: 58px;
  padding: 10px 13px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255,255,255,.025);
  cursor: pointer;
  transition: border-color .15s ease, background .15s ease, transform .15s ease;
}

.firmware-source-option:hover {
  transform: translateY(-1px);
  background: rgba(255,255,255,.04);
}

.firmware-source-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.firmware-source-dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid #697181;
  box-shadow: inset 0 0 0 3px #11151d;
  background: #11151d;
}

.firmware-source-option:has(input:checked) {
  border-color: rgba(244,247,251,.55);
  background: rgba(255,255,255,.065);
}

.firmware-source-option input:checked ~ .firmware-source-dot {
  border-color: var(--text);
  background: var(--text);
}

.firmware-source-copy {
  display: grid;
  gap: 3px;
}

.firmware-source-copy strong {
  font-size: 13px;
}

.firmware-source-copy small {
  color: var(--muted);
  font-size: 11px;
  overflow-wrap: anywhere;
}

.firmware-prepared-meta {
  min-height: 18px;
  margin: 12px 2px 8px;
  color: var(--muted);
  font-size: 11px;
  overflow-wrap: anywhere;
}

.firmware-update-button {
  min-height: 54px;
  margin-top: 8px;               /* match the gap between the source options */
}

.dfu-permission-button {
  width: 100%;
  margin-top: 8px;
  color: var(--text);
}

.dfu-permission-button[hidden] {
  display: none !important;
}

.firmware-progress {
  height: 7px;
  margin-top: 13px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255,255,255,.06);
}

#firmwareProgressBar {
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: var(--text);
  transition: width .18s ease;
}

.firmware-update-status {
  min-height: 18px;
  margin-top: 9px;
  color: var(--muted);
  font-size: 13px;               /* the primary line — larger than the hint below */
  line-height: 1.5;
}
.firmware-updater-card p.subtle {
  font-size: 11px;
  margin-bottom: 2px;
}

.firmware-update-status[data-state="ok"] { color: var(--ok); }
.firmware-update-status[data-state="error"] { color: var(--danger); }
.firmware-update-status[data-state="working"] { color: var(--text); }

@media (max-width: 640px) {
  .firmware-updater-card { padding: 15px; }
  .firmware-updater-head { align-items: flex-start; }
}

/* ---- C100: device slot bar (palette page) ---- */
.slot-bar {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}
.slot-bar .label { margin-right: 4px; }
.slot-buttons { display: flex; gap: 8px; }
.slot-button {
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.05);
  color: var(--muted);
  cursor: pointer;
}
.slot-button.active { color: var(--text); border-color: rgba(255,255,255,.35); background: rgba(255,255,255,.12); }
/* Download + Upload together span the same width as one Import/Export button (180px),
   and are equal size to each other. */
.slot-actions { margin-left: auto; display: flex; gap: 8px; width: 180px; max-width: 100%; }
.slot-actions button { flex: 1 1 0; width: auto; min-width: 0; min-height: 46px; }

/* driver-check modal */
.modal {
  position: fixed; inset: 0; z-index: 50;
  display: flex; align-items: center; justify-content: center;
  padding: 20px; background: rgba(4, 6, 10, .72); backdrop-filter: blur(3px);
}
.modal[hidden] { display: none; }
.modal-card {
  width: min(420px, 100%); background: var(--panel-2);
  border: 1px solid var(--line); border-radius: 20px; padding: 24px;
  box-shadow: 0 24px 60px rgba(0,0,0,.5);
}
.modal-card p { margin: 0 0 18px; line-height: 1.55; }
.modal-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.modal-actions button { flex: 1 1 140px; }