/* Styled after Yamaha's official THR editor: dark leather chassis, cream amp
   face, black value windows with amber digits, rotary knobs. */

:root {
  --chassis: #232327;
  --cream-hi: #f0e2bd;
  --cream-lo: #ddc998;
  --cream-text: #4a3f2a;
  --cream-strong: #2f2818;
  --row-hi: #3b3b40;
  --row-lo: #2a2a2e;
  --box: #0d0d0d;
  --amber: #f5a83c;
  --led: #ffb340;
  --text: #e6e6e6;
  --muted: #9a9a9a;
  --ok: #57c75b;
  --bad: #b0433f;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 10px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  /* the leather chassis IS the page — no frame around it */
  background:
    radial-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px) 0 0 / 4px 4px,
    var(--chassis);
  color: var(--text);
  min-height: 100vh;
}

button { font: inherit; cursor: pointer; }

/* ------------------------------------------------------------- chassis */

.chassis {
  max-width: 1560px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 10.5rem minmax(0, 1fr);
  gap: 6px;
  align-items: stretch;
}
.main-col { min-width: 0; }

/* ------------------------------------------------------------- library */

.library {
  display: flex;
  flex-direction: column;
  /* height comes from the grid row (i.e. the main column), not the 100 slots */
  contain: size;
  overflow: hidden;
  background: #1b1b1e;
  border: 1px solid #313136;
  border-radius: 8px 3px 3px 8px;
  padding: 0.6rem;
}

.lib-title {
  margin: 0 0 0.4rem 0.2rem;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

#lib-list {
  flex: 1;
  min-height: 0;
  margin: 0;
  padding: 2px;
  list-style: none;
  overflow-y: auto;
  background: var(--box);
  border-radius: 4px;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.8);
}

.lib-slot {
  display: flex;
  gap: 0.5rem;
  width: 100%;
  padding: 0.22rem 0.5rem;
  background: none;
  border: none;
  border-radius: 2px;
  color: #cfcfcf;
  font-size: 0.75rem;
  text-align: left;
}
.lib-slot:hover { background: #222226; }
.lib-slot .lib-num {
  font-family: ui-monospace, Menlo, monospace;
  color: #6f6f76;
}
.lib-slot.empty .lib-name { color: #5b5b62; font-style: italic; }
.lib-slot.selected { background: #2c2c31; color: var(--amber); }
.lib-slot.selected .lib-num { color: var(--amber); }

.lib-actions { display: flex; gap: 0.4rem; margin-top: 0.5rem; }
.lib-actions button,
.library .file-btn {
  flex: 1;
  background: #2b2b30;
  border: 1px solid #3e3e44;
  border-radius: 4px;
  color: var(--text);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-align: center;
  padding: 0.3rem 0.55rem;
  box-shadow: none;
}
.lib-actions button:hover,
.library .file-btn:hover { filter: brightness(1.2); }

/* ------------------------------------------------------------ amp face */

.amp-face {
  background: linear-gradient(var(--cream-hi), var(--cream-lo));
  border-radius: 8px 8px 0 0;
  padding: 0.55rem 1rem 0.7rem;
  color: var(--cream-text);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.face-top {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  flex-wrap: wrap;
  padding-bottom: 0.45rem;
  margin-bottom: 0.5rem;
  border-bottom: 1px solid rgba(47, 40, 24, 0.25);
}

.brand {
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: 0.14em;
  color: var(--cream-strong);
  text-transform: uppercase;
  white-space: nowrap;
  margin-right: 0.5rem;
}
.brand span { font-weight: 400; color: #6b5c3e; }

.amp-controls {
  display: flex;
  align-items: flex-end;
  gap: 1rem;
}
.amp-left { flex: 0 0 auto; }

.amp-cab,
.amp-knobs {
  border-left: 1px solid rgba(47, 40, 24, 0.25);
  padding-left: 1.1rem;
}

/* Shared fixed-pitch layout: equal-width cells from a common left origin, so
   knob columns align across rows — and unlike a no-wrap grid, a block with
   many controls (Rack compressor) wraps instead of overflowing its row. */
.amp-knobs,
.block-knobs {
  display: flex;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 0.5rem 0.6rem;
}

.amp-title {
  margin: 0 0 0.35rem;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cream-strong);
}

.model-list {
  display: grid;
  grid-auto-flow: column;
  grid-template-rows: repeat(4, auto);
  gap: 0.12rem 0.7rem;
}

/* Amp models: guitar models in one column, special modes set apart and
   vertically centred against them */
.amp-model-groups { display: flex; }
.amp-model-groups .model-list { grid-template-rows: repeat(5, auto); }
.amp-model-groups .model-list + .model-list {
  grid-template-rows: repeat(3, auto);
  align-content: center;
  border-left: 1px solid rgba(47, 40, 24, 0.25);
  margin-left: 0.7rem;
  padding-left: 0.7rem;
}
/* group titles share one line at the top; knobs stay bottom-aligned */
.amp-left,
.amp-cab { align-self: flex-start; }
.model-item {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.1rem 0.35rem;
  background: none;
  border: none;
  border-radius: 3px;
  color: var(--cream-text);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.model-item .mled {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #8a7a55;
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.5);
}
.model-item.on { background: var(--box); color: var(--amber); }
.model-item.on .mled {
  background: var(--led);
  box-shadow: 0 0 6px 1px rgba(255, 179, 64, 0.8);
}

/* ---------------------------------------------------------------- knobs */

.knob-cell {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  width: 5.2rem;
}

.knob-label {
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #cfcfcf;
  white-space: nowrap;
}
.amp-face .knob-label { color: var(--cream-text); }

.knob-value {
  background: var(--box);
  border: 1px solid #000;
  border-radius: 2px;
  color: var(--amber);
  font-family: ui-monospace, Menlo, monospace;
  font-size: 0.72rem;
  align-self: stretch; /* equal-width windows across a row */
  padding: 0.12rem 0.3rem;
  text-align: center;
  white-space: nowrap;
  box-shadow: inset 0 2px 3px rgba(0, 0, 0, 0.9);
}

input.value-edit {
  min-width: 0;
  outline: none;
}
input.value-edit:focus { border-color: var(--amber); }

.knob {
  --angle: 0deg;
  position: relative;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: radial-gradient(circle at 32% 28%, #6a6a6e, #3a3a3d 45%, #212124 75%, #0f0f10);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.55), inset 0 1px 2px rgba(255, 255, 255, 0.25);
  cursor: ns-resize;
  touch-action: none;
}
.knob::after {
  content: '';
  position: absolute;
  left: calc(50% - 1.5px);
  top: 9%;
  width: 3px;
  height: 41%;
  background: #e8e8e8;
  border-radius: 2px;
  transform-origin: 50% 100%;
  transform: rotate(var(--angle));
}
.knob:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

/* --------------------------------------------------------- effect rows */

/* Bands: Compressor alone, Effect+Delay, Reverb+Gate. The second block in
   a band is content-sized (Delay/Gate keep one knob line at any width);
   the first stretches to fill. */
.block-rows {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-top: 5px;
}
.band { display: flex; gap: 5px; }
.band > .block-row { flex: 1 1 auto; min-width: 0; }
.band > .block-row + .block-row { flex: 0 0 auto; }
.block-row[data-block="reverb"] { border-bottom-left-radius: 8px; }
.block-row[data-block="gate"]   { border-bottom-right-radius: 8px; }

.block-row {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto 1fr;
  grid-template-areas:
    "title title"
    "side  knobs";
  align-items: center;
  gap: 0.2rem 1rem;
  padding: 0.4rem 1rem 0.5rem;
  background: linear-gradient(var(--row-hi), var(--row-lo));
  border-radius: 3px;
  border-top: 1px solid #4a4a4f;
  border-bottom: 1px solid #151517;
}

.block-title {
  grid-area: title;
  justify-self: start;
  margin: 0;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #8f8f94;
}

.block-side {
  grid-area: side;
  display: flex;
  align-items: center;
  gap: 0.7rem;
}
.block-side.typed { width: 10rem; } /* uniform knob origin for typed blocks */

/* Unified on/off: the push button carries its own LED lens in the centre. */
.push {
  position: relative;
  width: 28px;
  height: 28px;
  padding: 0;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #555, #222 70%);
  border: 2px solid #111;
  box-shadow: 0 3px 5px rgba(0, 0, 0, 0.6), inset 0 1px 1px rgba(255, 255, 255, 0.2);
  flex: 0 0 auto;
}
.push::after {
  content: '';
  position: absolute;
  inset: 31%;
  border-radius: 50%;
  background: #4c4234;
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.7);
}
.push.on::after {
  background: var(--led);
  box-shadow: 0 0 8px 2px rgba(255, 179, 64, 0.75);
}
.push:active { transform: translateY(1px); }

/* LED lists double as type selectors on the dark rows */
.block-row .model-item { color: #c9c9c9; }
.block-row .model-item .mled { background: #55503f; }
.block-row .model-item.on { color: var(--amber); }

/* Enum params (Ratio, Knee) render as LED lists like every other selector.
   Stretched to the row height: label on the knob-label line, list bottom on
   the knob line. */
.enum-list-cell {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 0.3rem;
  align-self: stretch;
  margin-left: 0.5rem;
  border-left: 1px solid #4a4a4f;
  padding-left: 1rem;
}
.enum-list-cell .model-list { grid-template-rows: repeat(3, auto); }

.block-knobs { grid-area: knobs; }
.block-row.off .block-knobs { opacity: 0.55; }

/* -------------------------------------------------- face-top controls */

#dirty-dot {
  color: #b0641f;
  text-shadow: 0 0 5px rgba(255, 179, 64, 0.6);
}

.face-top button,
.file-btn {
  background: #26262a;
  border: none;
  border-radius: 4px;
  color: var(--cream-hi);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.35rem 0.7rem;
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.4);
}
.face-top button:hover,
.file-btn:hover { filter: brightness(1.25); }
/* keep the hidden file input focusable so Import works from the keyboard */
.file-btn { position: relative; }
.file-btn input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
.file-btn:focus-within {
  outline: 2px solid var(--amber);
  outline-offset: 1px;
}

.btn-group { display: inline-flex; }
.btn-group button { border-radius: 0; }
.btn-group button:first-child { border-radius: 4px 0 0 4px; }
.btn-group button:last-child { border-radius: 0 4px 4px 0; }
.btn-group button + button { border-left: 1px solid rgba(240, 226, 189, 0.25); }

/* System toggles as amp-style push buttons with an LED lens */
.push-toggle {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--cream-text);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
}
.push-toggle input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
.push-toggle .push {
  width: 24px;
  height: 24px;
}
.push-toggle input:checked + .push::after {
  background: var(--led);
  box-shadow: 0 0 8px 2px rgba(255, 179, 64, 0.75);
}
.push-toggle input:focus-visible + .push {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.conn-btn {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}
.dot.online { background: var(--ok); box-shadow: 0 0 6px 1px rgba(87, 199, 91, 0.7); }
.dot.offline { background: var(--bad); }

/* -------------------------------------------------------------- console */

/* Modal dialog, opened from the Console button; logging only runs while open */
dialog.console {
  width: min(820px, 92vw);
  background: linear-gradient(var(--row-hi), var(--row-lo));
  color: var(--text);
  border: 1px solid #4a4a4f;
  border-radius: 8px;
  padding: 0.7rem 1rem 1rem;
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.6);
}
dialog.console::backdrop { background: rgba(0, 0, 0, 0.55); }

.console-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.console-head h2 {
  margin: 0;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.console button {
  background: #2b2b30;
  border: 1px solid #3e3e44;
  border-radius: 4px;
  color: var(--text);
  font-size: 0.75rem;
  padding: 0.25rem 0.7rem;
}
.console button:hover { filter: brightness(1.2); }

#toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  max-width: 90vw;
  background: #111;
  color: var(--cream-hi);
  border: 1px solid #4a4a4f;
  border-radius: 6px;
  padding: 0.5rem 0.9rem;
  font-size: 0.8rem;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
  z-index: 10;
}

#log {
  background: #101012;
  border-radius: 4px;
  height: 14rem;
  overflow-y: auto;
  padding: 0.5rem;
  margin: 0.5rem 0 0;
  font-family: ui-monospace, Menlo, monospace;
  font-size: 0.75rem;
  white-space: pre-wrap;
  word-break: break-all;
}

#send-form {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

#hex-input {
  flex: 1;
  background: #101012;
  border: 1px solid #3a3a40;
  border-radius: 4px;
  color: var(--text);
  font-family: ui-monospace, Menlo, monospace;
  font-size: 0.8rem;
  padding: 0.4rem 0.6rem;
}

/* ------------------------------------------------------------ small screens */

@media (max-width: 980px) {
  .chassis { display: block; }
  .library { contain: none; margin-bottom: 6px; border-radius: 8px; }
  #lib-list { max-height: 10rem; }
  .band { flex-direction: column; }
  .amp-controls { flex-wrap: wrap; }
  /* stacked amp sections: vertical dividers would dangle */
  .amp-cab,
  .amp-knobs { border-left: none; padding-left: 0; }
}

@media (max-width: 640px) {
  .block-row { display: flex; flex-direction: column; align-items: stretch; }
  .block-side.typed { width: auto; }
  .conn-btn { margin-left: 0; }
}

.lib-rename {
  width: 100%;
  min-width: 0;
  background: var(--box);
  border: 1px solid var(--amber);
  border-radius: 2px;
  color: var(--amber);
  font: inherit;
  padding: 0 0.2rem;
  outline: none;
}

.lib-row {
  display: flex;
  align-items: stretch;
}
.lib-row .lib-slot { flex: 1; min-width: 0; }
.lib-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.lib-save {
  flex: 0 0 auto;
  background: none;
  border: none;
  padding: 0 0.3rem;
  color: #8f8f94;
  display: flex;
  align-items: center;
}
.lib-save:hover { color: var(--amber); }

/* ------------------------------------------------------- offline state */

body.offline .amp-controls,
body.offline .block-rows {
  opacity: 0.4;
  filter: grayscale(0.6);
}

body.offline .main-col { position: relative; }
body.offline .main-col::after {
  content: 'NO AMP CONNECTED \2014  plug in the THR10 over USB and press Connect';
  position: absolute;
  top: 46%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(13, 13, 13, 0.92);
  color: var(--amber);
  border: 1px solid #4a4a4f;
  border-radius: 6px;
  padding: 0.7rem 1.3rem;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.6);
  z-index: 5;
  pointer-events: none;
}

/* Expanding ring on a pseudo-element, transform/opacity only: the pulse runs
   on the compositor instead of repainting every frame for however long the
   app sits disconnected. */
body.offline .conn-btn .dot { position: relative; }
body.offline .conn-btn .dot::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: rgba(176, 67, 63, 0.7);
  z-index: -1; /* behind the dot itself, over the button face */
  animation: conn-pulse 1.6s infinite;
}
@keyframes conn-pulse {
  from { transform: scale(1); opacity: 1; }
  70%, to { transform: scale(2.2); opacity: 0; }
}

.face-top button:disabled {
  opacity: 0.45;
  cursor: default;
}

.push-toggle:has(input:disabled) {
  opacity: 0.45;
  cursor: default;
}