:root {
  --color-bg:           #000;
  --color-surface:      rgba(255,255,255,0.04);
  --color-surface-alt:  rgba(255,255,255,0.07);
  --color-border:       rgba(255,255,255,0.15);
  --color-border-active:rgba(255,255,255,0.4);
  --color-text:         rgba(255,255,255,0.75);
  --color-text-dim:     rgba(255,255,255,0.4);
  --color-text-bright:  rgba(255,255,255,0.95);
  --color-accent:       #9b475f;
  --color-accent-dim:   #5a2a38;
  --color-accent-bg:    #1f0e14;
  --color-accent-text:  #d58aa2;
  --color-panel:        #070707;
  --color-card:         #0c0c0c;
  --color-scrim:        rgba(0,0,0,0.72);
  --color-warn:         #ffb000;
  --color-error:        #ff4444;
  --color-tier-a:       rgba(255,255,255,0.95);
  --color-tier-b:       rgba(255,255,255,0.66);
  --color-tier-c:       rgba(255,255,255,0.43);
  --color-tier-d:       rgba(255,255,255,0.2);
  --color-tier-unscored: rgba(255,255,255,0.15);
  --color-progress-bg:  rgba(255,255,255,0.08);
  --color-progress-fill:rgba(255,255,255,0.85);
  --color-link:         rgba(255,255,255,0.7);
  --color-status-running: rgba(255,255,255,0.9);
  --color-status-idle:    rgba(255,255,255,0.2);
  --color-status-failed:  #ff4444;
  --color-stage-download: rgba(255,255,255,0.9);
  --color-stage-extract:  rgba(255,255,255,0.75);
  --color-stage-ingest:   rgba(255,255,255,0.9);
  --color-stage-clean:    rgba(255,255,255,0.6);
  --color-stage-align:    #9b475f;
  --color-stage-score:    rgba(255,255,255,0.35);
  --color-stage-dedup:    rgba(255,255,255,0.2);
  --sidebar-width:      12rem;

  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --font-size-xs:   0.6875rem;
  --font-size-sm:   0.8125rem;
  --font-size-base: 0.9375rem;
  --font-size-lg:   1.125rem;
  --font-size-xl:   1.375rem;
  --font-size-2xl:  1.75rem;

  --spacing-0:  0;
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2.5rem;
  --spacing-2xl:4rem;

  --line-height: 1.5;
}

[hidden] { display: none !important; }

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  min-height: 100vh;
}

a {
  color: var(--color-link);
  text-decoration: none;
}

a:hover {
  color: var(--color-text-bright);
}

h1, h2, h3, h4 {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--color-text-bright);
  line-height: 1.3;
}

h1 { font-size: var(--font-size-2xl); }
h2 { font-size: var(--font-size-xl); }
h3 { font-size: var(--font-size-lg); }
h4 { font-size: var(--font-size-base); }

pre, code, kbd {
  font-family: var(--font-mono);
}

::selection {
  background: var(--color-accent-dim);
  color: var(--color-text-bright);
}

:focus-visible {
  outline: 0.125rem solid var(--color-accent);
  outline-offset: 0.125rem;
}