/* ============================================================
   MK QUIZ — SHARED COMPONENTS (on top of tokens.css)
   Buttons, fields, cards, badges, focus, scrollbars.
   ============================================================ */

/* Focus ring — one ring everywhere */
:where(button, a, input, select, textarea, [tabindex]):focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: var(--radius-xs);
}

::selection { background: var(--qa-tint-16); }

/* Scrollbars */
* { scrollbar-width: thin; scrollbar-color: var(--ink-400) transparent; }
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-thumb { background: var(--ink-400); border-radius: 8px; border: 2px solid transparent; background-clip: content-box; }

/* Buttons ------------------------------------------------------ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  min-height: 44px; padding: 10px 22px;
  font: var(--fw-semibold) var(--fs-body)/1 var(--font-primary);
  color: var(--color-text); background: var(--white-08);
  border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  cursor: pointer; user-select: none; text-decoration: none;
  transition: background var(--dur-base) var(--ease-standard),
              border-color var(--dur-base) var(--ease-standard),
              transform var(--dur-fast) var(--ease-standard),
              box-shadow var(--dur-base) var(--ease-standard);
}
.btn:hover { background: var(--white-14); border-color: var(--border-strong); }
.btn:active { transform: translateY(1px) scale(.99); }
.btn:disabled { opacity: .45; cursor: not-allowed; transform: none; }

.btn-primary {
  background: var(--qgrad-cta); border-color: transparent; color: var(--color-text-on-brand);
}
.btn-primary:hover { box-shadow: var(--glow-brand); background: var(--qgrad-cta); filter: brightness(1.08); }

.btn-ghost { background: transparent; border-color: transparent; }
.btn-ghost:hover { background: var(--white-08); border-color: transparent; }

.btn-danger { background: transparent; border-color: color-mix(in srgb, var(--status-danger) 45%, transparent); color: var(--status-danger); }
.btn-danger:hover { background: color-mix(in srgb, var(--status-danger) 14%, transparent); }

.btn-lg { min-height: 56px; padding: 14px 32px; font-size: var(--fs-lead); border-radius: var(--radius-md); }
.btn-sm { min-height: 34px; padding: 6px 14px; font-size: var(--fs-sm); }

/* Fields ------------------------------------------------------- */
.field { display: flex; flex-direction: column; gap: var(--space-2); }
.field > label { font-size: var(--fs-sm); font-weight: var(--fw-medium); color: var(--color-text-secondary); }
.input, .field input[type="text"], .field input[type="number"], .field input[type="password"],
.field select, .field textarea {
  width: 100%; min-height: 44px; padding: 10px 14px;
  font: var(--fw-regular) var(--fs-body)/1.4 var(--font-primary);
  color: var(--color-text); background: var(--color-surface-sunken);
  border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  transition: border-color var(--dur-base) var(--ease-standard), background var(--dur-base) var(--ease-standard);
}
.input:hover, .field :is(input,select,textarea):hover { border-color: var(--border-strong); }
.input:focus, .field :is(input,select,textarea):focus { border-color: var(--qa-line); outline: none; box-shadow: 0 0 0 3px var(--qa-tint-10); }
.field textarea { resize: vertical; min-height: 72px; }
input[type="checkbox"], input[type="radio"] { accent-color: var(--qa); width: 18px; height: 18px; }
input[type="color"] { min-height: 44px; width: 64px; padding: 4px; background: var(--color-surface-sunken); border: 1px solid var(--color-border); border-radius: var(--radius-sm); cursor: pointer; }
input[type="range"] { accent-color: var(--qa); }

/* Cards -------------------------------------------------------- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2);
}
.card-pad { padding: var(--space-6); }

/* Badges / chips ------------------------------------------------ */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 12px; border-radius: var(--radius-pill);
  font-size: var(--fs-xs); font-weight: var(--fw-semibold); letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  background: var(--qa-tint-10); color: var(--color-text-secondary);
  border: 1px solid var(--qa-line);
}
.badge-soft { background: var(--white-08); border-color: var(--color-border); }

/* Typography helpers -------------------------------------------- */
.eyebrow { font-size: var(--fs-xs); font-weight: var(--fw-semibold); letter-spacing: var(--tracking-wider); text-transform: uppercase; color: var(--color-text-muted); }
.accent-serif { font-family: var(--font-accent); font-style: italic; font-weight: 500; }
.grad-text { background: var(--qgrad); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* Utility -------------------------------------------------------- */
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.muted { color: var(--color-text-muted); }
.hidden { display: none !important; }

/* Shared keyframes (used by all surfaces) ------------------------ */
@keyframes mkq-pop-in { from { opacity: 0; transform: scale(.6); } 60% { transform: scale(1.08); } to { opacity: 1; transform: scale(1); } }
@keyframes mkq-rise    { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@keyframes mkq-pulse   { 0%,100% { transform: scale(1); } 50% { transform: scale(1.045); } }
@keyframes mkq-shake   { 10%,90% { transform: translateX(-2px);} 20%,80% { transform: translateX(3px);} 30%,70% { transform: translateX(-5px);} 40%,60% { transform: translateX(5px);} 50% { transform: translateX(-3px);} }
@keyframes mkq-float   { 0%,100% { transform: translateY(0);} 50% { transform: translateY(-8px);} }
@keyframes mkq-glowpulse { 0%,100% { box-shadow: 0 0 0 0 var(--qa-tint-16);} 50% { box-shadow: 0 0 0 14px transparent;} }