/* =========================================================
   SAMPLE SEQUENCER :: Wanderlinse
   app.css – bereinigte Version 1.7
   ========================================================= */

/* ---------- Grundfarben ---------- */

:root {
  --page-top: #d6dce0;
  --page-bottom: #bdc5cb;

  --panel-top: #edf1f3;
  --panel-bottom: #d3dbe0;
  --panel-border: #5f6b73;

  --dark-top: #64737d;
  --dark-bottom: #46545e;

  --text: #1b2730;
  --muted: #59666f;

  --accent: #f2ad16;
  --accent-dark: #8a5d00;

  --danger-top: #c34b4b;
  --danger-bottom: #8d2525;

  --grid-bg: #182126;
  --grid-line: #354149;
}

/* ---------- Basis ---------- */

* {
  box-sizing: border-box;
}

html {
  background: var(--page-bottom);
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background: none;
}

a:link, a:visited {color: #b84444;}

.app {
  width: min(1600px, 96%);
  margin: 14px auto 28px;
}

.topbar,
.panel {
  margin-bottom: 12px;
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  background: linear-gradient(
    var(--panel-top),
    var(--panel-bottom)
  );
  box-shadow: 0 1px 4px rgb(0 0 0 / 20%);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 16px;
}

.topbar h1 {
  margin-top: 5px;
      margin-bottom: 4px;
          font-size: clamp(2rem, 4.3vw, 3rem);
          line-height: 0.98;
    letter-spacing: -0.035em;
}

.topbar p {
  max-width: 1000px;
  margin: 0;
  color: #47545d;
  font-size: 16px;
  line-height: 1.45;
}

.panel {
  padding: 11px;
}

.panel h2,
.section-head h2 {
  margin: 2px 0 5px;
  font-size: 16px;
}

.eyebrow,
.field-title {
  color: #9b6a00;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.hint,
.keyboard-info {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.4;
}

.master {
  min-width: 220px;
}

/* ---------- Buttons ---------- */

button,
.file-button {
  padding: 7px 11px;
  border: 1px solid #48545c;
  border-radius: 4px;
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  background: linear-gradient(#73828c, #4a5963);
  box-shadow: inset 0 1px rgb(255 255 255 / 20%);
}

button:hover,
.file-button:hover {
  background: linear-gradient(#82919b, #56656f);
}

button.active,
.active {
  box-shadow:
    inset 0 0 0 2px var(--accent),
    inset 0 1px rgb(255 255 255 / 20%);
}

.accent {
  color: #211700 !important;
  border-color: #a87000 !important;
  background: linear-gradient(#f8c54a, #e39b00) !important;
}

.danger {
  color: #fff;
  background: linear-gradient(
    var(--danger-top),
    var(--danger-bottom)
  );
}

.file-button input {
  display: none;
}

/* ---------- Transport ---------- */

.transport {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  color: #25313a;
  border-color: #606c74;
  background: linear-gradient(#e5eaed, #cad2d7);
}

.transport label {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 13px;
}

.transport button {
  color: #fff;
  border-color: #48545c;
  background: linear-gradient(#73828c, #4a5963);
}

.transport input[type="number"],
select {
  padding: 7px;
  color: #202b32;
  border: 1px solid #8c979e;
  border-radius: 3px;
  background: #f8fafb;
}

/* ---------- Slider wie im Referenzbild ---------- */

/*
   Dunkle Grundspur, gelbe Füllung bis zum Regler,
   runder gelber Regler. Chrome/Edge bekommen den
   Füllstand über die CSS-Variable --range-fill.
*/

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;

  --range-fill: 50%;

  display: block;
  width: 100%;
  height: 18px;
  margin: 2px 0;
  padding: 0;

  border: 0;
  outline: 0;
  background: transparent;

  cursor: pointer;
}

/* Chrome / Edge / Safari */

input[type="range"]::-webkit-slider-runnable-track {
  width: 100%;
  height: 6px;

  border: 0;
  border-radius: 999px;

  background:
    linear-gradient(
      to right,
      var(--range-color, #f2ad16) 0,
      var(--range-color, #f2ad16) var(--range-fill),
      #3f4447 var(--range-fill),
      #3f4447 100%
    );

  box-shadow:
    inset 0 1px 1px rgb(0 0 0 / 35%),
    0 1px rgb(255 255 255 / 28%);
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;

  width: 15px;
  height: 15px;
  margin-top: -4.5px;

  border: 0;
  border-radius: 50%;

  background: var(--range-color, #f2ad16);

  box-shadow:
    0 1px 2px rgb(0 0 0 / 30%);
}

/* Firefox */

input[type="range"]::-moz-range-track {
  width: 100%;
  height: 6px;

  border: 0;
  border-radius: 999px;

  background: #3f4447;

  box-shadow:
    inset 0 1px 1px rgb(0 0 0 / 35%),
    0 1px rgb(255 255 255 / 28%);
}

input[type="range"]::-moz-range-progress {
  height: 6px;
  border-radius: 999px;
  background: var(--range-color, #f2ad16);
}

input[type="range"]::-moz-range-thumb {
  width: 15px;
  height: 15px;

  border: 0;
  border-radius: 50%;

  background: var(--range-color, #f2ad16);

  box-shadow:
    0 1px 2px rgb(0 0 0 / 30%);
}

/* Swing etwas breiter */

.swing-control {
  min-width: 330px;
}

.swing-control input[type="range"] {
  min-width: 230px;
}

/* ---------- Sample ---------- */

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.tracks {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.track {
  --track-color: var(--accent);

  min-width: 0;
  padding: 7px;

  border: 1px solid #8a949a;
  border-left: 5px solid var(--track-color);
  border-radius: 5px;

  background: rgb(255 255 255 / 18%);

  transition:
    box-shadow .12s ease,
    border-color .12s ease;
}

.track.active-track {
  border-color: var(--track-color);

  box-shadow:
    0 0 0 2px color-mix(in srgb, var(--track-color) 45%, transparent),
    0 1px 3px rgb(0 0 0 / 16%);
}

.track-title {
  display: flex;
  align-items: center;
  gap: 7px;
}

.track-dot {
  width: 12px;
  height: 12px;
  flex: 0 0 12px;

  border-radius: 50%;

  background: var(--track-color);

  box-shadow:
    inset 0 1px rgb(255 255 255 / 35%),
    0 1px 2px rgb(0 0 0 / 25%);
}

.track-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 5px;
  margin-bottom: 5px;
}

.track h3 {
  margin: 0;
  font-size: 15px;
}

.filename {
  margin: 6px 0;
  overflow: hidden;
  color: #53616a;
  font-size: 11px;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.wave {
  display: block;
  width: 100%;
  height: 88px;

  border: 1px solid #58656d;
  border-radius: 3px;

  background: #080d11;
  cursor: ew-resize;
  touch-action: none;
}

.trim {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;

  max-width: none;
  margin-top: 5px;
}

.trim label {
  color: #5b6871;
  font-size: 12px;
}

.trim input {
  width: 100%;
  padding: 4px 5px;

  border: 1px solid #929da4;
  border-radius: 3px;

  background: #f8fafb;
}

.track-controls {
  display: grid;
  grid-template-columns: repeat(3, minmax(70px, 1fr));
  align-items: end;
  gap: 6px;

  margin-top: 6px;
  padding: 6px;

  border-radius: 4px;

  background: linear-gradient(
    var(--dark-top),
    var(--dark-bottom)
  );
}

.track-controls label {
  display: flex;
  flex-direction: column;
  gap: 2px;

  color: #fff;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-align: center;
}

.track-controls output {
  min-height: 14px;
  color: #f6c341;
  font-size: 9px;
}


.track-controls .preview {
  grid-column: auto;
  align-self: center;
  justify-self: center;

  width: 94px;
  min-height: 34px;
  padding: 5px 10px;

  margin-left: 0px;

  font-size: 10px;
  white-space: nowrap;

  background: linear-gradient(#30363a, #171b1e);
  border-color: #111518;

  box-shadow:
    inset 0 1px rgba(255,255,255,.12),
    0 1px 2px rgba(0,0,0,.35);
}

/* ---------- Zufallssequenz ---------- */

.generator-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(120px, 1fr));
  gap: 10px;
  align-items: end;
}

.generator-grid label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
}

.button-row {
  display: flex;
  gap: 6px;
}

.button-row button {
  flex: 1;
}

/* ---------- MIDI ---------- */

.midi-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;

  margin: 8px 0 2px;
  padding: 8px 10px;

  color: #eee;
  font-size: 12px;

  border: 1px solid #465159;
  border-radius: 4px;

  background: linear-gradient(
    var(--dark-top),
    var(--dark-bottom)
  );
}

.midi-bar button {
  padding: 6px 9px;
}

.midi-bar strong {
  white-space: normal;
}

/* ---------- Piano Roll ---------- */

.roll-shell {
  display: grid;
  grid-template-columns: 58px max-content;
  align-items: start;

  max-height: 390px;
  overflow: auto;

  border: 1px solid #5c6870;

  background: #11181d;

  overscroll-behavior: contain;
  scrollbar-gutter: stable;
}

.labels {
  position: sticky;
  left: 0;
  z-index: 4;

  color: #edf1f3;
  background: #46545e;
}

.note-label {
  height: 22px;
  padding: 4px 5px;

  border-bottom: 1px solid #5d6a72;

  font-size: 10px;
  text-align: right;
}

.grid-scroll {
  overflow: visible;
}

.grid {
  display: grid;
  min-width: 620px;
}

.cell {
  height: 22px;

  border-right: 1px solid var(--grid-line);
  border-bottom: 1px solid #2d3940;

  background: var(--grid-bg);
}

.cell:nth-child(4n) {
  border-right-color: #718089;
}

.cell.on {
  background: linear-gradient(#ffc843, #e39b00);
}

.cell.playhead {
  box-shadow: inset 3px 0 #fff;
}

/* Original-Tonhöhe des aktuell ausgewählten Samples */
.cell.original-pitch {
  position: relative;
}

.cell.original-pitch::after {
  content: "";
  position: absolute;
  z-index: 3;
  left: 0;
  right: 0;
  bottom: -1px;

  height: 2px;

  background: #e23a3a;
  pointer-events: none;
}

.note-label.original-pitch-label {
  position: relative;

  color: #ffb1b1;
  font-weight: 800;
  white-space: nowrap;
}

.note-label.original-pitch-label::after {
  content: "";
  position: absolute;
  z-index: 5;
  left: 0;
  right: 0;
  bottom: -1px;

  height: 2px;

  background: #e23a3a;
}

/* ---------- Velocity ---------- */

.velocity-wrap {
  margin-top: 8px;
  overflow: hidden;

  border: 1px solid #5c6870;
  border-radius: 4px;

  background: #12191e;
}

.velocity-head {
  display: flex;
  align-items: center;
  justify-content: space-between;

  padding: 5px 8px;

  color: var(--accent);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.11em;

  border-bottom: 1px solid #62717a;

  background: linear-gradient(
    #4f5d66,
    #39464e
  );
}

.velocity-head strong {
  color: #fff;
  font-size: 11px;
  letter-spacing: 0;
}

/*
   Die Velocity-Lane besitzt exakt denselben linken Versatz
   wie die Tonhöhen-Beschriftung der Piano Roll (58px).
   Der Canvas selbst wird per JavaScript exakt so breit wie
   das Notenraster.
*/

.velocity-scroll {
  display: flex;
  align-items: stretch;

  width: 100%;
  overflow-x: auto;
  overflow-y: hidden;

  background: #12191e;

  scrollbar-gutter: stable;
  overscroll-behavior-x: contain;
}

.velocity-label-spacer {
  position: sticky;
  left: 0;
  z-index: 2;

  flex: 0 0 58px;
  width: 58px;

  border-right: 1px solid #5d6a72;

  background: #46545e;
}

#velocityLane {
  display: block;
  flex: 0 0 auto;

  height: 130px;
  min-height: 130px;

  border: 0;

  background: #12191e;

  cursor: crosshair;
  touch-action: none;
}

/* ---------- Keyboard ---------- */

.keyboard-scroll {
  overflow-x: auto;
  padding: 5px 0;
}

.keyboard {
  position: relative;
  display: flex;

  min-width: 820px;
  height: 150px;
}

.key.white {
  position: relative;
  flex: 1;

  height: 145px;

  border: 1px solid #555;
  border-radius: 0 0 4px 4px;

  background: #fafafa;
}

.key.black {
  position: absolute;
  z-index: 2;

  width: 2.2%;
  height: 90px;

  border: 1px solid #000;
  border-radius: 0 0 3px 3px;

  background: #202020;
}

.key.down {
  background: var(--accent) !important;
}

.key .note-name {
  position: absolute;
  bottom: 5px;
  left: 50%;
  font-size: 9px;
  transform: translateX(-50%);
}

.key .pc-key {
  position: absolute;
  left: 50%;
  bottom: 25px;
  min-width: 20px;
  padding: 2px 4px;
  border: 1px solid #9b6a00;
  border-radius: 3px;
  background: #f2ad16;
  color: #201600;
  font-size: 11px;
  line-height: 1.2;
  text-align: center;
  transform: translateX(-50%);
  box-shadow: 0 1px 2px rgb(0 0 0 / 25%);
}

.key.black .pc-key {
  bottom: 8px;
  min-width: 18px;
  padding: 1px 3px;
  font-size: 10px;
}

.oct,
.record-tools {
  display: flex;
  align-items: center;
  gap: 5px;
}

/* ---------- Projekt / Footer ---------- */

.project #status {
  color: #56636c;
  font-size: 12px;
}

.wrap {
  flex-wrap: wrap;
}

footer {
  padding: 16px;
  color: #555;
  font-size: 12px;
  text-align: center;
}

/* ---------- Responsive ---------- */

@media (max-width: 950px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .generator-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 850px) {
  .track-controls {
    grid-template-columns: 1fr 1fr;
  }

  .generator-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 600px) {
  .app {
    width: 98%;
    margin: 6px auto;
  }

  .topbar {
    padding: 13px;
  }

  .topbar h1 {
    font-size: 22px;
  }

  .panel {
    padding: 10px;
  }

  .section-head,
  .midi-bar {
    align-items: flex-start;
    flex-direction: column;
  }

  .record-tools {
    flex-wrap: wrap;
  }

  .roll-shell {
    max-height: 330px;
  }

  #velocityLane {
    height: 110px;
    min-height: 110px;
  }
}

@media (max-width: 520px) {
  .track-controls,
  .generator-grid {
    grid-template-columns: 1fr;
  }

  .wave {
    height: 110px;
  }
}


/* ---------- Lexikon ---------- */

.lexicon {
  margin-top: 12px;
}

.lexicon h2 {
  font-size: 18px;
  color: var(--muted);
}

.lexicon article h3 {
  text-shadow: none;
  -webkit-text-stroke: 0;
  text-stroke: 0;
}

.lexicon-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 24px;
}

.lexicon-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 10px;

  padding: 9px 0;

  border-bottom: 1px solid rgb(70 84 94 / 22%);
}

.lexicon-item dt {
  margin: 0;
  color: var(--text);
  text-shadow: none;
  -webkit-text-stroke: 0;
  filter: none;
  font-size: 14px;
  font-weight: 800;
}

.lexicon-item dd {
  margin: 0;
  color: #46545d;
  font-size: 14px;
  line-height: 1.45;
}

@media (max-width: 850px) {
  .lexicon-grid {
    grid-template-columns: 1fr;
  }

  .swing-control {
    min-width: 260px;
  }
}

@media (max-width: 520px) {
  .lexicon-item {
    grid-template-columns: 1fr;
    gap: 3px;
  }

  .swing-control {
    width: 100%;
    min-width: 0;
  }

  .swing-control input[type="range"] {
    min-width: 150px;
  }
}


/* Jede Sample-Spur färbt ihre eigenen Regler. */
.track input[type="range"] {
  --range-color: var(--track-color);
}

.track input[type="range"]::-webkit-slider-runnable-track {
  background:
    linear-gradient(
      to right,
      var(--range-color) 0,
      var(--range-color) var(--range-fill),
      #3f4447 var(--range-fill),
      #3f4447 100%
    );
}

.track input[type="range"]::-webkit-slider-thumb {
  background: var(--range-color);
}

.track input[type="range"]::-moz-range-progress {
  background: var(--range-color);
}

.track input[type="range"]::-moz-range-thumb {
  background: var(--range-color);
}

/* Piano-Roll-Noten der aktuell bearbeiteten Spur erhalten einen Innenrahmen. */
.cell.active-note {
  box-shadow:
    inset 0 0 0 2px #fff,
    inset 0 0 0 4px var(--active-track-color);
}

/* Inaktive Zellen bleiben dunkel. */
.cell:not(.on) {
  background: var(--grid-bg);
}

@media (max-width: 1050px) {
  .tracks {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

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

  .track-controls {
    grid-template-columns: repeat(3, minmax(70px, 1fr));
  }
}


/* ---------- 8 / 16 / 32 / 64 Steps ---------- */
/* Bei langen Patterns bleibt die Step-Breite erhalten; der Bereich scrollt horizontal. */
.piano-roll-scroll,
.piano-roll-wrap,
.piano-roll-container,
.roll-scroll,
.velocity-scroll,
.velocity-wrap {
  overflow-x: auto;
  overflow-y: auto;
}

/* Häufig verwendete Raster-Elemente dürfen breiter als der sichtbare Bereich werden. */
.piano-roll-grid,
#pianoRollGrid,
#pianoRoll,
.velocity-grid,
#velocityGrid,
#velocityLane {
  min-width: max-content;
}

/* Markiert Taktgruppen optisch, sofern Step-Zellen nummeriert/data-step besitzen. */
.piano-roll-grid [data-step],
#pianoRollGrid [data-step],
#pianoRoll [data-step] {
  min-width: 22px;
}