/**
 * KoreAves application foundation.
 * Single owner for global reset, document substrate, base links, focus, and a11y utilities.
 * Component and surface styles must not redefine these global contracts.
 */
@import "../design-system/tokens/index.css?v=20260928-font-loading-r1";

:root { color-scheme: only light; }

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

html {
  max-width: 100%;
  font-size: 16px;
  background: var(--ka-color-paper-base);
  color: var(--ka-color-ink-primary);
  overflow-x: visible;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background: var(--ka-app-background, var(--ka-color-paper-base));
  color: var(--ka-color-ink-primary);
  font-family: var(--ka-font-hangul-sans);
  font-size: var(--ka-text-body);
  line-height: var(--ka-line-body);
}

:focus-visible {
  outline: 2px solid var(--ka-color-focus-ring);
  outline-offset: 2px;
}

a {
  color: var(--ka-color-link);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}
a:hover { color: var(--ka-color-link-hover); }

.skip-link {
  position: fixed;
  top: -100px;
  left: var(--ka-space-16);
  z-index: 10000;
  padding: var(--ka-space-8) var(--ka-space-16);
  border-radius: var(--ka-radius-sm);
  background: var(--ka-color-ink-primary);
  color: var(--ka-color-paper-surface);
  font-weight: 600;
  text-decoration: none;
  transition: top var(--ka-transition-subtle);
}
.skip-link:focus-visible { top: var(--ka-space-16); }

.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;
}

/* Shared owner: first-render loading geometry for client-rendered tool surfaces.
   The skeleton reserves approximately the same space as the eventual content,
   so a cold load is visibly in progress instead of presenting an empty field. */
.ka-surface-loading {
  width: min(100%, 1180px);
  min-height: 58vh;
  margin: 0 auto;
  padding: var(--ka-space-24);
  display: grid;
  gap: var(--ka-space-20);
}

.ka-loading-status {
  color: var(--ka-color-ink-quiet);
  font-size: var(--ka-text-body);
  line-height: var(--ka-line-body);
}

.ka-loading-skeleton {
  display: grid;
  gap: var(--ka-space-20);
  pointer-events: none;
  user-select: none;
}

.ka-loading-skeleton-header {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: var(--ka-space-16);
  align-items: center;
  min-height: 112px;
  padding: var(--ka-space-16);
  border: 1px solid var(--ka-color-rule-subtle);
  border-radius: var(--ka-radius-md);
  background: var(--ka-color-paper-surface);
}

.ka-loading-skeleton-copy {
  display: grid;
  gap: var(--ka-space-8);
}

.ka-loading-skeleton-stage {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(260px, 0.65fr);
  gap: var(--ka-space-20);
  min-height: 430px;
}

.ka-loading-skeleton-panel {
  min-width: 0;
  min-height: 220px;
  padding: var(--ka-space-16);
  border: 1px solid var(--ka-color-rule-subtle);
  border-radius: var(--ka-radius-md);
  background: var(--ka-color-paper-surface);
  display: grid;
  align-content: start;
  gap: var(--ka-space-12);
}

.ka-skeleton-block {
  display: block;
  width: 100%;
  min-height: 14px;
  border-radius: var(--ka-radius-sm);
  background: var(--ka-color-paper-sunken);
  animation: ka-loading-pulse 1.4s ease-in-out infinite alternate;
}

.ka-skeleton-block.is-media {
  width: 72px;
  min-height: 72px;
  border-radius: var(--ka-radius-md);
}

.ka-skeleton-block.is-title { width: min(58%, 420px); min-height: 22px; }
.ka-skeleton-block.is-medium { width: min(78%, 620px); }
.ka-skeleton-block.is-short { width: min(42%, 320px); }
.ka-skeleton-block.is-map { min-height: 360px; }
.ka-skeleton-block.is-row { min-height: 42px; }

@keyframes ka-loading-pulse {
  from { opacity: 0.55; }
  to { opacity: 1; }
}

@media (max-width: 768px) {
  .ka-surface-loading {
    min-height: 64vh;
    padding: var(--ka-space-16);
  }

  .ka-loading-skeleton-header {
    grid-template-columns: 64px minmax(0, 1fr);
  }

  .ka-skeleton-block.is-media {
    width: 56px;
    min-height: 56px;
  }

  .ka-loading-skeleton-stage {
    grid-template-columns: 1fr;
    min-height: 560px;
  }

  .ka-skeleton-block.is-map {
    min-height: 300px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ka-skeleton-block { animation: none; opacity: 0.8; }
}