/* =========================================================================
   Reset + element defaults
   ========================================================================= */

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

* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  color-scheme: light dark;
}

body {
  min-height: 100vh;
  min-height: 100dvh;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  letter-spacing: var(--tracking-snug);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

img, picture, video, canvas, svg { display: block; max-width: 100%; }

input, button, textarea, select { font: inherit; color: inherit; }

p, h1, h2, h3, h4, h5, h6 { overflow-wrap: break-word; }

h1, h2, h3, h4, h5, h6 {
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  font-weight: var(--weight-semibold);
}

h1 { font-size: var(--text-2xl); }
h2 { font-size: var(--text-xl); }
h3 { font-size: var(--text-lg); }
h4 { font-size: var(--text-md); }
h5, h6 { font-size: var(--text-base); }

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}
a:hover { color: var(--color-primary-hover); }

ul, ol { list-style: none; padding: 0; }

code, pre, kbd, samp, .mono {
  font-family: var(--font-mono);
  font-size: 0.92em;
  font-variant-ligatures: none;
}

hr {
  border: 0;
  border-top: 1px solid var(--color-border);
  margin: var(--space-6) 0;
}

table { border-collapse: collapse; width: 100%; }

/* --- Focus: always visible, never removed ------------------------------ */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--color-ring);
  outline-offset: 2px;
  border-radius: var(--radius-xs);
}

::selection {
  background: var(--color-primary);
  color: var(--color-on-primary);
}

/* --- Scrollbars -------------------------------------------------------- */
* { scrollbar-width: thin; scrollbar-color: var(--color-border-strong) transparent; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--color-border-strong);
  border-radius: var(--radius-pill);
  border: 2px solid transparent;
  background-clip: content-box;
}
::-webkit-scrollbar-thumb:hover { background-color: var(--color-text-subtle); background-clip: content-box; }

/* The `hidden` attribute must beat any class that sets `display`, otherwise
   things like `.empty[hidden]` (display:flex) stay visible. */
[hidden] { display: none !important; }

/* --- Accessibility helpers --------------------------------------------- */
.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;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-4);
  z-index: 999;
  padding: var(--space-3) var(--space-5);
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-radius: var(--radius-md);
  font-weight: var(--weight-medium);
  box-shadow: var(--shadow-lg);
  transition: top var(--duration-base) var(--ease-out);
}
.skip-link:focus { top: var(--space-4); color: var(--color-on-primary); }

/* --- Motion preference -------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* --- Print -------------------------------------------------------------- */
@media print {
  .app-sidebar, .app-topbar, .toast-stack, .no-print { display: none !important; }
  .app-main { padding: 0 !important; }
  body { background: #fff; color: #000; }
}