@import "tailwindcss";

/* ── Design tokens ─────────────────────────────────────────────────────────── */
:root {
  /* Surfaces - full indigo palette */
  --color-bg: #1a1a2e;
  --color-surface: #1e1e38;
  --color-surface-2: #232348;
  --color-surface-3: #282858;
  --color-border: #2d2d55;
  --color-border-subtle: #232348;

  /* Accent */
  --color-accent: #9333ea;
  --color-accent-hover: #a855f7;
  --color-accent-subtle: rgba(147, 51, 234, 0.18);
  --color-accent-subtle-border: rgba(147, 51, 234, 0.35);
  --color-accent-text: #c084fc;

  /* Toggle switch inactive track */
  --color-toggle-off: #4a4f88;

  /* Text - muted bumped to #9ca3af for WCAG AA compliance on dark surfaces */
  --color-text: #e2e8f0;
  --color-text-muted: #9ca3af;
  --color-text-dim: #3d4070;

  /* Notes canvas - slightly deeper than bg so the practice area reads as distinct */
  --color-notes-bg: #141428;
  --color-notes-border: #1f1f44;

  /* Hands */
  --color-warning: #f59e0b;
  --color-warning-subtle: rgba(245, 158, 11, 0.08);
  --color-warning-border: rgba(245, 158, 11, 0.22);

  --color-left-hand: #9333ea;
  --color-left-hand-subtle: rgba(147, 51, 234, 0.18);
  --color-left-hand-subtle-border: rgba(147, 51, 234, 0.38);
  --color-left-hand-text: #c084fc;
  --color-right-hand: #22d3ee;
  --color-right-hand-subtle: rgba(34, 211, 238, 0.14);
  --color-right-hand-subtle-border: rgba(34, 211, 238, 0.32);
  --color-right-hand-text: #22d3ee;
}

[data-theme="light"] {
  /* Surfaces */
  --color-bg: #ffffff;
  --color-surface: #ffffff;
  --color-surface-2: #f5f7fb;
  --color-surface-3: #eaecf4;
  --color-border: #dde1ea;
  --color-border-subtle: #eaecf4;

  /* Accent */
  --color-accent: #5e61f0; /* was #6366f1, darkened to pass WCAG AA contrast */
  --color-accent-hover: #4f46e5;
  --color-accent-subtle: rgba(94, 97, 240, 0.12);
  --color-accent-subtle-border: rgba(94, 97, 240, 0.3);
  --color-accent-text: #4f46e5;

  /* Toggle switch inactive track */
  --color-toggle-off: #c1c9d6;

  /* Text */
  --color-text: #0f172a;
  --color-text-muted: #64748b;
  --color-text-dim: #94a3b8;

  /* Hands */
  --color-warning: #d97706;
  --color-warning-subtle: rgba(217, 119, 6, 0.08);
  --color-warning-border: rgba(217, 119, 6, 0.22);

  --color-left-hand: #3b82f6;
  --color-left-hand-subtle: rgba(59, 130, 246, 0.12);
  --color-left-hand-subtle-border: rgba(59, 130, 246, 0.3);
  --color-left-hand-text: #1d4ed8;
  --color-right-hand: #ef4444;
  --color-right-hand-subtle: rgba(239, 68, 68, 0.1);
  --color-right-hand-subtle-border: rgba(239, 68, 68, 0.28);
  --color-right-hand-text: #dc2626;

  /* Notes canvas - cooler, slightly darker than chrome to create a
     "stage vs UI" separation that mirrors what dark mode does with
     #141428 content vs #1E1E38 chrome. #EEF1FA has the same blue-indigo
     undertone as the dark palette and reads as white at a glance while
     still being visibly distinct from the #FFFFFF header/transport. */
  --color-notes-bg: #eef1fa;
  --color-notes-border: #d4d9ee;
}

/* ── Reset ─────────────────────────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body,
#root {
  height: 100%;
  background: var(--color-bg);
  color: var(--color-text);
  font-family:
    "Space Grotesk",
    system-ui,
    -apple-system,
    sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

/* ── Typography scale ──────────────────────────────────────────────────────── */
.text-label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
}

/* ── Inputs & selects ──────────────────────────────────────────────────────── */
select,
input[type="range"] {
  font-family: inherit;
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='7'%3E%3Cpath d='M0 0l6 7 6-7z' fill='%2364748b'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 28px !important;
}

[data-theme="dark"] select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='7'%3E%3Cpath d='M0 0l6 7 6-7z' fill='%239ca3af'/%3E%3C/svg%3E");
}

/* ── Settings panel rows ───────────────────────────────────────────────────── */
.settings-row:hover {
  background: var(--color-surface-2);
}

/* ── Scrollbar ─────────────────────────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--color-surface-3);
  border-radius: 99px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-border);
}

/* ── Range slider - fully custom ───────────────────────────────────────────── */
/* Remove native appearance so our pseudo-element CSS actually takes effect.
   Each slider sets --fill-pct via inline style (computed from value/min/max)
   so the gradient draws the correct filled/unfilled split. */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
  cursor: pointer;
  outline: none;
}

/* Thumb - WebKit/Blink */
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-accent);
  cursor: pointer;
  margin-top: -5.5px; /* center on 3px track: -(14-3)/2 */
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.35);
  transition:
    background 0.12s,
    box-shadow 0.12s;
}
input[type="range"]:hover::-webkit-slider-thumb {
  background: var(--color-accent-hover);
  box-shadow: 0 0 0 4px var(--color-accent-subtle);
}

/* Track - WebKit/Blink (uses --fill-pct for filled/unfilled split) */
input[type="range"]::-webkit-slider-runnable-track {
  height: 3px;
  border-radius: 99px;
  background: linear-gradient(
    to right,
    var(--color-accent) var(--fill-pct, 0%),
    var(--color-border) var(--fill-pct, 0%)
  );
}

/* Thumb - Firefox */
input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-accent);
  border: none;
  cursor: pointer;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.35);
}
input[type="range"]:hover::-moz-range-thumb {
  background: var(--color-accent-hover);
  box-shadow: 0 0 0 4px var(--color-accent-subtle);
}

/* Track - Firefox */
input[type="range"]::-moz-range-track {
  height: 3px;
  border-radius: 99px;
  background: var(--color-border);
}
input[type="range"]::-moz-range-progress {
  height: 3px;
  border-radius: 99px;
  background: var(--color-accent);
}

/* ── Transport buttons ─────────────────────────────────────────────────────── */
/* Shared base for all icon/action buttons in the transport bar */
.t-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  height: 32px;
  min-width: 32px;
  padding: 0 8px;
  border-radius: 7px;
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition:
    background 0.12s,
    opacity 0.12s;
  flex-shrink: 0;
  font-size: 12px;
  font-family: inherit;
}
.t-btn:hover:not(:disabled) {
  background: var(--color-surface-3);
  color: var(--color-text);
}
.t-btn:disabled {
  opacity: 0.55;
  cursor: default;
}

/* Primary play/pause button - circular, accent-colored */
.t-btn.primary {
  background: var(--color-accent);
  border-color: transparent;
  width: 40px;
  height: 40px;
  min-width: 40px;
  padding: 0;
  border-radius: 50%;
  color: white;
  box-shadow: 0 0 18px rgba(147, 51, 234, 0.5);
}
.t-btn.primary:hover:not(:disabled) {
  background: var(--color-accent-hover);
  box-shadow: 0 0 24px rgba(147, 51, 234, 0.65);
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ── AlphaTab host ─────────────────────────────────────────────────────────── */
.at-surface svg {
  display: block;
}

/* ── AlphaTab playback cursor ─────────────────────────────────────────────── */
/* Beat cursor - thin accent-colored vertical bar following playhead */
.at-cursor-beat {
  background: rgba(147, 51, 234, 0.65);
  border-radius: 1px;
}

/* Bar cursor - wider semi-transparent highlight for the current measure */
.at-cursor-bar {
  background: rgba(147, 51, 234, 0.12);
  border-radius: 2px;
}

/* Selection overlay */
.at-selection div {
  background: rgba(147, 51, 234, 0.2);
}

/* ── Dark-mode sheet music inversion ──────────────────────────────────────── */
/* Filter is applied only to SVG elements (the actual music notation), NOT to
   the container. This way:
   - Black staff lines/noteheads to white (readable on dark background)
   - The container's background (--color-bg dark gray) shows through transparent SVG areas
   - Cursor/selection divs (.at-cursor-beat etc.) are NOT SVGs, so they keep their
     natural purple accent colors - no pre-inversion math needed. */
[data-theme="dark"] .sheet-dark-invert svg {
  filter: invert(1);
}