/* Shared UI foundation across index, blog, micro-arena, and article pages.
   Keep this additive and non-destructive so existing page-level styles continue to work. */

/* Shared token aliases for reused UI elements */
:root {
  --ui-border: var(--border);
  --ui-panel: var(--panel);
  --ui-accent: var(--accent);
  --ui-text: var(--text);
  --ui-muted: var(--muted);
}

/* Shared CTA interaction language */
:where(.btn, .playlist-btn, .game-btn, .blog-chat-send, .chat-send, .quiz-next-btn, .quiz-restart-btn, .ask-ai-btn, .filter-btn, .ep-filter-btn, .selector-btn) {
  transition: transform 0.2s ease, box-shadow 0.2s ease, color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

:where(.btn, .playlist-btn, .game-btn, .blog-chat-send, .chat-send, .quiz-next-btn, .quiz-restart-btn, .ask-ai-btn, .filter-btn, .ep-filter-btn, .selector-btn):focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ── Shared nav ────────────────────────────────────────────────────── */
nav:not(.toc-sidebar) {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100; height: 56px;
  background: rgba(5,8,16,0.92); border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px); display: flex; align-items: center;
  justify-content: space-between; padding: 0 2rem;
}
.nav-logo {
  font-family: 'Exo 2', sans-serif; font-weight: 900; font-size: 1.2rem;
  letter-spacing: 0.08em; text-decoration: none; display: flex; align-items: baseline;
}
.nav-logo .star  { color: var(--accent); text-shadow: 0 0 20px var(--accent); }
.nav-logo .kraft { color: #fff; }
.nav-logo .ika   { color: var(--accent2); text-shadow: 0 0 20px var(--accent2); }
.nav-links { display: flex; align-items: center; gap: 2rem; }
.nav-link {
  font-family: 'Share Tech Mono', monospace; font-size: 0.85rem; letter-spacing: 0.1em;
  color: var(--muted); text-decoration: none; text-transform: uppercase;
  transition: color 0.2s; border-bottom: 2px solid transparent; padding-bottom: 2px;
}
.nav-link:hover { color: var(--accent); }
.nav-link.active { color: var(--accent); border-bottom-color: var(--accent); }
.nav-hamburger {
  display: none; background: none; border: none; color: var(--muted); cursor: pointer;
  padding: 0.4rem 0.6rem; font-size: 1.4rem; line-height: 1; transition: color 0.2s;
  -webkit-tap-highlight-color: transparent;
}
.nav-hamburger:hover { color: var(--accent); }
.nav-hamburger[aria-expanded='true'] { color: var(--ui-accent); }
@media (max-width: 768px) {
  nav:not(.toc-sidebar) { padding: 0 1.25rem; }
  .nav-links { display: none; }
  .nav-hamburger { display: flex; align-items: center; justify-content: center; }
  .nav-links.open {
    display: flex; flex-direction: column; align-items: flex-start; position: absolute;
    top: 100%; left: 0; right: 0; background: rgba(5,8,16,0.97);
    border-bottom: 1px solid var(--border); padding: 0.75rem 1.25rem; gap: 0; z-index: 101;
    backdrop-filter: blur(12px);
  }
  .nav-links.open .nav-link {
    padding: 0.75rem 0.25rem; font-size: 0.85rem; width: 100%;
    border-bottom: 1px solid var(--border); border-top: none;
  }
  .nav-links.open .nav-link:last-child { border-bottom: none; }
  .nav-links.open .nav-link.active { color: var(--accent); border-bottom-color: var(--border); }
}


/* Shared cookie shell (applies across pages using #cookieBanner / #cookieModal) */
#cookieBanner {
  border-top: 1px solid var(--ui-border) !important;
  backdrop-filter: blur(16px) !important;
}

#cookieModal,
#consentModal,
#skCookieModal {
  backdrop-filter: blur(6px);
}

#cookieBanner button,
#cookieModal button,
#consentModal button,
#skCookieModal button {
  font-family: 'Share Tech Mono', monospace !important;
  letter-spacing: 0.1em !important;
  text-transform: uppercase !important;
}

#cookieBanner button:hover,
#cookieModal button:hover,
#consentModal button:hover,
#skCookieModal button:hover {
  border-color: var(--ui-accent) !important;
  color: var(--ui-accent) !important;
}

#cookieBanner button:last-child,
#cookieModal button:last-child,
#consentModal button:last-child,
#skCookieModal button:last-child {
  border-color: var(--ui-accent) !important;
}

#cookieBanner button:last-child:hover,
#cookieModal button:last-child:hover,
#consentModal button:last-child:hover,
#skCookieModal button:last-child:hover {
  background: transparent !important;
}

/* Shared tokenized surface helpers */
.ui-panel {
  background: var(--ui-panel);
  border: 1px solid var(--ui-border);
}

.ui-accent-border {
  border-left: 3px solid var(--ui-accent);
}