/* ─── HR Platform — Design Tokens ─────────────────────────────────────── */
/* Immediate theme apply runs in ui.js before render to prevent flash.       */

:root { color-scheme: light dark; }

/* ── Shared structure tokens (theme-independent) ── */
body.app {
  --radius-sm:   4px;
  --radius-md:   6px;
  --radius-lg:  10px;
  --radius-xl:  14px;
  --font-sans:  "Inter", system-ui, -apple-system, sans-serif;
  --font-mono:  "JetBrains Mono", "Fira Code", monospace;
  --sidebar-w:  240px;
  --topbar-h:    56px;
}

/* ── Dark theme (default) ──────────────────────────────────────────────── */
body.app {
  --bg:           #080b10;
  --panel:        #121823;
  --card:         #1d2330;
  --card-hover:   #252c3b;
  --surface-elev: #181e2a;

  --border:        #293547;
  --border-subtle: #1f2836;
  --border-strong: #48597a;
  --border-hover:  #3a4a63;

  --text-primary:   #e0e2e5;
  --text-heading:   #f0f2f4;
  --text-secondary: #c0c4c8;
  --text-muted:     #b0b4ba;
  --text-faint:     #8b8f96;

  --accent:        #6aa7ff;
  --accent-hover:  #9ec5fe;
  --accent-bg:     rgba(106,167,255,.12);
  --accent-border: rgba(106,167,255,.30);

  --success:        #22c55e;
  --success-bg:     rgba(34,197,94,.12);
  --success-border: rgba(34,197,94,.30);
  --warning:        #fbbf24;
  --warning-bg:     rgba(251,191,36,.12);
  --warning-border: rgba(251,191,36,.30);
  --danger:         #ef4444;
  --danger-bg:      rgba(239,68,68,.12);
  --danger-border:  rgba(239,68,68,.30);
  --info:           var(--accent);
  --info-bg:        var(--accent-bg);
  --info-border:    var(--accent-border);

  --row-hover: rgba(255,255,255,.03);

  --shadow-sm: 0 1px 3px rgba(0,0,0,.40), 0 1px 2px rgba(0,0,0,.24);
  --shadow-md: 0 4px 12px rgba(0,0,0,.50), 0 2px 4px rgba(0,0,0,.30);
  --shadow-lg: 0 12px 32px rgba(0,0,0,.60), 0 4px 8px rgba(0,0,0,.40);
}

/* ── Light theme ───────────────────────────────────────────────────────── */
html.light-mode body.app,
body.app.theme-light {
  --bg:           #dde4ee;
  --panel:        #ffffff;
  --card:         #ffffff;
  --card-hover:   #f6f9fc;
  --surface-elev: #eff3f9;

  --border:        #c9d2de;
  --border-subtle: #e1e7ef;
  --border-strong: #8290a4;
  --border-hover:  #b3bfcd;

  --text-primary:   #1e293b;
  --text-heading:   #0f172a;
  --text-secondary: #334155;
  --text-muted:     #64748b;
  --text-faint:     #94a3b8;

  --accent:        #2563eb;
  --accent-hover:  #1d4ed8;
  --accent-bg:     rgba(37,99,235,.08);
  --accent-border: rgba(37,99,235,.20);

  --success:        #16a34a;
  --success-bg:     rgba(22,163,74,.08);
  --success-border: rgba(22,163,74,.20);
  --warning:        #d97706;
  --warning-bg:     rgba(217,119,6,.08);
  --warning-border: rgba(217,119,6,.20);
  --danger:         #dc2626;
  --danger-bg:      rgba(220,38,38,.08);
  --danger-border:  rgba(220,38,38,.20);

  --row-hover: rgba(0,0,0,.03);

  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,.10), 0 2px 4px rgba(0,0,0,.06);
  --shadow-lg: 0 12px 32px rgba(0,0,0,.15), 0 4px 8px rgba(0,0,0,.08);
}

/* ── Body base ─────────────────────────────────────────────────────────── */
body.app {
  font-family: var(--font-sans);
  background:  var(--bg);
  color:       var(--text-primary);
  min-height:  100vh;
  font-size:   14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}

/* ── Theme toggle button (injected by ui.js) ───────────────────────────── */
#theme-toggle {
  position: fixed;
  bottom: 24px; right: 24px;
  z-index: 9999;
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text-primary);
  font-size: 18px;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  display: flex; align-items: center; justify-content: center;
  transition: background .15s, border-color .15s, transform .15s;
}
#theme-toggle:hover  { background: var(--card-hover); border-color: var(--border-hover); transform: scale(1.05); }
#theme-toggle:active { transform: scale(0.97); }
#theme-toggle:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ── Skip link ─────────────────────────────────────────────────────────── */
.skip-link {
  position: absolute;
  top: -100%;
  left: 8px;
  background: var(--accent);
  color: #fff;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 14px;
  z-index: 10000;
  text-decoration: none;
}
.skip-link:focus { top: 8px; }

/* ── Screen-reader only ────────────────────────────────────────────────── */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}

/* ── Scrollbar ─────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-strong); }

/* ── Reduced motion ────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}