apps/web/app/globals.css

@tailwind base;
@tailwind components;
@tailwind utilities;

/*
 * Jam Buddy hardware-sampler rack.
 * Self-contained dark panel with a rotary-knob look and trigger pads.
 * Kept as plain CSS so it doesn't fight the Tailwind theme tokens, and
 * accessibility is preserved (range inputs, focus rings, aria-live).
 */
.jambuddy-rack {
  background: linear-gradient(180deg, #1c1e2b 0%, #12131b 100%);
  border: 1px solid #2a2d3d;
}

.jambuddy-pad {
  border-radius: 0.5rem;
  border: 1px solid #2a2d3d;
  background: #1f2130;
  color: #7f829c;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.6rem 0;
  transition: background 0.15s, color 0.15s, box-shadow 0.15s;
}
.jambuddy-pad:hover {
  background: #2a2d3d;
}
.jambuddy-pad--on {
  background: #f4a261;
  color: #12131b;
  box-shadow: 0 0 12px rgba(244, 162, 97, 0.4);
  font-weight: bold;
}

/* Rotary knob = a styled <input type=range>. A metallic potentiometer: a
 * brushed-aluminum body with a knurled edge, a gloss highlight, and a real
 * pointer line that rotates with the value (read off --knob-pct). */
.jambuddy-knob {
  -webkit-appearance: none;
  appearance: none;
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 9999px;
  background:
    radial-gradient(circle at 50% 50%, #dfe3ea 0%, #aeb4c0 34%, #5b6270 68%, #3a3f4a 100%);
  border: 2px solid #2a2d3d;
  cursor: pointer;
  position: relative;
  box-shadow:
    inset 0 2px 3px rgba(255, 255, 255, 0.5),
    inset 0 -4px 8px rgba(0, 0, 0, 0.45),
    0 3px 6px rgba(0, 0, 0, 0.6);
  /* Pointer line + knurl tick marks drawn on top of the metal body. */
}
/* The arc: a conic-gradient slice rotated to the knob's angle. --knob-rot is
 * passed as an angle (e.g. 150deg), not a percentage, so the sweep is valid. */
.jambuddy-knob::before {
  content: "";
  position: absolute;
  inset: 6px;
  border-radius: 9999px;
  background:
    conic-gradient(
      from -135deg,
      transparent 0deg,
      transparent calc(var(--knob-rot, 0deg) - 6deg),
      #12131b calc(var(--knob-rot, 0deg) - 6deg) var(--knob-rot, 0deg),
      transparent var(--knob-rot, 0deg) 360deg
    );
  opacity: 0.9;
}
/* The pointer line itself (the "needle"). */
.jambuddy-knob::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 6px;
  height: 26px;
  border-radius: 2px;
  background: linear-gradient(180deg, #14161d, #3a3f4a 45%, #14161d);
  box-shadow: 0 0 2px rgba(0, 0, 0, 0.8);
  transform: translate(-50%, -100%) rotate(var(--knob-rot, 0deg));
  transform-origin: 50% 100%;
}
/* Range thumb hidden — the pointer is drawn by ::after so the native thumb is
   invisible; keep it transparent to preserve drag interaction. */
.jambuddy-knob::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 0;
  height: 0;
}
.jambuddy-knob::-moz-range-thumb {
  width: 0;
  height: 0;
}

/* The big trigger button */
.jambuddy-trigger {
  border-radius: 0.5rem;
  border: none;
  background: linear-gradient(180deg, #f4a261 0%, #e07b3a 100%);
  color: #12131b;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  padding: 0.9rem 0;
  cursor: pointer;
  box-shadow: 0 2px 0 #a85a24;
}
.jambuddy-trigger:hover {
  filter: brightness(1.05);
}
.jambuddy-trigger:disabled {
  opacity: 0.5;
  cursor: wait;
}

/* Sampler/sequencer transport pad — a big backlit pad with an LED color
 * (set via --pad-c) that brightens when pressed. */
.jambuddy-padbig {
  border-radius: 0.6rem;
  border: 2px solid rgba(0, 0, 0, 0.6);
  background:
    radial-gradient(circle at 50% 30%, rgba(255, 255, 255, 0.06), transparent 60%),
    linear-gradient(180deg, #2a2d3d 0%, #1a1c28 100%);
  color: var(--pad-c, #f4a261);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  padding: 1.1rem 0;
  cursor: pointer;
  box-shadow:
    inset 0 -4px 8px rgba(0, 0, 0, 0.6),
    inset 0 1px 0 rgba(255, 255, 255, 0.15),
    0 3px 0 rgba(0, 0, 0, 0.5);
  transition: transform 0.08s, box-shadow 0.08s, filter 0.15s;
}
.jambuddy-padbig:hover {
  filter: brightness(1.12);
}
.jambuddy-padbig[aria-pressed="true"],
.jambuddy-padbig:active {
  transform: translateY(2px);
  box-shadow:
    inset 0 2px 6px rgba(0, 0, 0, 0.6),
    0 0 16px var(--pad-c, #f4a261),
    0 1px 0 rgba(0, 0, 0, 0.5);
}
.jambuddy-padbig:disabled {
  opacity: 0.4;
  cursor: wait;
}
.jambuddy-padbig__label {
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.6);
}

/* Icon download button pinned beside a waveform — sized to match the track,
 * vertically centered, with a visible border and hover glow. */
.jambuddy-save {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  align-self: center;
  width: 3rem;
  height: 3rem;
  border-radius: 0.5rem;
  border: 1px solid #2a2d3d;
  background: linear-gradient(180deg, #2a2d3d 0%, #1a1c28 100%);
  color: #5fd38a;
  cursor: pointer;
  transition: filter 0.15s, box-shadow 0.15s, transform 0.08s;
}
.jambuddy-save:hover {
  filter: brightness(1.2);
  box-shadow: 0 0 10px rgba(95, 211, 138, 0.3);
}
.jambuddy-save:active {
  transform: translateY(1px);
}
.jambuddy-save:disabled {
  opacity: 0.4;
  cursor: default;
  box-shadow: none;
}

/* Big RED record button — a physical record arm with a glowing tip. */
.jambuddy-record {
  border-radius: 0.5rem;
  border: 1px solid #7a1c1c;
  background: linear-gradient(180deg, #d64545 0%, #a11f1f 55%, #7a1414 100%);
  color: #ffe9e9;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  padding: 0.9rem 0;
  cursor: pointer;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.35),
    inset 0 -3px 6px rgba(0, 0, 0, 0.4),
    0 2px 0 #5c0f0f;
  position: relative;
}
.jambuddy-record:hover {
  filter: brightness(1.08);
}
.jambuddy-record[aria-pressed="true"] {
  background: linear-gradient(180deg, #e05252 0%, #b52424 55%, #8a1616 100%);
  box-shadow:
    inset 0 2px 4px rgba(0, 0, 0, 0.55),
    0 0 14px rgba(224, 60, 60, 0.6),
    0 1px 0 #5c0f0f;
  transform: translateY(1px);
}
.jambuddy-record:disabled {
  opacity: 0.5;
  cursor: wait;
}

/* Physical hardware toggle for the engine (API / Local). A labelled checkbox
 * hidden inside; the visual is a metal slide switch with a chunky lever that
 * travels between two detent positions (API left, Local right), matching the
 * hardware-sampler aesthetic. Keyboard/screenreader usable via the input. */
.engine-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.engine-toggle input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}
/* The switch body — a recessed metal channel with a center detent notch. */
.engine-toggle__switch {
  position: relative;
  display: inline-flex;
  align-items: center;
  width: 6.5rem;
  height: 2rem;
  border-radius: 0.4rem;
  background: linear-gradient(180deg, #4a4f5a 0%, #2c3038 60%, #1e2127 100%);
  border: 1px solid #17191e;
  box-shadow:
    inset 0 2px 5px rgba(0, 0, 0, 0.7),
    0 1px 1px rgba(255, 255, 255, 0.12);
  padding: 0 0.35rem;
}
/* Labels pinned to each side of the lever travel. */
.engine-toggle__label {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  color: #8b92a0;
  font-weight: 700;
  z-index: 1;
  pointer-events: none;
}
.engine-toggle__label--api {
  left: 0.45rem;
}
.engine-toggle__label--local {
  right: 0.3rem;
}
/* The chunky metal lever — slides to whichever side is active. */
.engine-toggle__lever {
  position: absolute;
  top: 50%;
  left: 0.3rem;
  width: 2.6rem;
  height: 1.5rem;
  border-radius: 0.25rem;
  background: linear-gradient(180deg, #f0e9dc 0%, #cfc7b8 40%, #a89f8e 100%);
  border: 1px solid #6b6352;
  box-shadow:
    inset 0 1px 1px rgba(255, 255, 255, 0.7),
    inset 0 -3px 5px rgba(0, 0, 0, 0.35),
    0 2px 3px rgba(0, 0, 0, 0.5);
  transform: translateY(-50%);
  transition: left 0.18s cubic-bezier(0.34, 1.56, 0.64, 1);
  cursor: pointer;
}
/* A grip groove on the lever. */
.engine-toggle__lever::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 1rem;
  height: 3px;
  border-radius: 2px;
  background: rgba(0, 0, 0, 0.25);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.5);
}
/* Checked (API) -> lever slides left under the API label; active label glows. */
.engine-toggle input:checked + .engine-toggle__switch .engine-toggle__lever {
  left: 0.3rem;
}
.engine-toggle input:not(:checked) + .engine-toggle__switch .engine-toggle__lever {
  left: calc(100% - 2.9rem);
}
.engine-toggle input:checked + .engine-toggle__switch .engine-toggle__label--api {
  color: #f4a261;
  text-shadow: 0 0 6px rgba(244, 162, 97, 0.6);
}
.engine-toggle input:not(:checked) + .engine-toggle__switch .engine-toggle__label--local {
  color: #5fd38a;
  text-shadow: 0 0 6px rgba(95, 211, 138, 0.6);
}
.engine-toggle input:focus-visible + .engine-toggle__switch {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}
.engine-toggle input:disabled + .engine-toggle__switch {
  opacity: 0.5;
  cursor: not-allowed;
}
:root {
  --bg: #ffffff;
  --fg: #1a1a1a;
  --accent: #0066cc;
  --focus: #ffd700;
  --limb-kick: #d62828;
  --limb-snare: #1d3557;
  --limb-hihat: #f4a261;
  --limb-ride: #2a9d8f;
  --limb-crash: #e76f51;
  --limb-china: #8338ec;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1a1a;
    --fg: #f0f0f0;
    --accent: #66b2ff;
  }
}

@media (prefers-contrast: more) {
  :root {
    --fg: #000000;
    --bg: #ffffff;
    --accent: #0000ee;
    --focus: #ff00ff;
  }
}

/* Always-visible focus outline — WCAG 2.4.7 */
:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

/* Skip links — pattern from docs/05-accessibility.md §Keyboard navigation */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--accent);
  color: var(--bg);
  padding: 0.5rem 1rem;
  z-index: 100;
}
.skip-link:focus {
  top: 0;
}

/* Reduced motion — docs/05-accessibility.md §Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}