/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--ai-space-sm);
  padding: 10px 16px;
  font-size: var(--ai-fs-md);
  font-weight: var(--ai-fw-medium);
  font-family: var(--ai-font-sans);
  background: var(--ai-surface-2);
  color: var(--ai-text);
  border: 1px solid var(--ai-border);
  border-radius: var(--ai-radius-md);
  cursor: pointer;
  text-decoration: none;
  transition: background var(--ai-dur-fast), transform var(--ai-dur-fast), border-color var(--ai-dur-fast);
  min-height: 44px;
}
.btn__icon { display: inline-block; text-decoration: none; line-height: 1; }
.btn__icon > svg, .btn__icon > img { display: block; }
.btn:hover { background: var(--ai-surface); }
.btn:active { transform: scale(0.98); animation: ai-pulse var(--ai-dur-medium) var(--ai-ease-out); }
.btn:disabled, .btn[aria-disabled="true"] { opacity: 0.5; cursor: not-allowed; }
.btn[aria-busy="true"]::after {
  content: ''; width: 14px; height: 14px; border-radius: 50%;
  border: 2px solid currentColor; border-top-color: transparent;
  animation: ai-spin var(--ai-dur-cinematic) linear infinite;
}
.btn--primary { background: var(--ai-accent-primary); border-color: var(--ai-accent-primary); color: white; }
.btn--primary:hover { background: #5457e6; }
.btn--secondary { background: transparent; border-color: var(--ai-border-strong); }
.btn--danger { background: var(--ai-accent-danger); border-color: var(--ai-accent-danger); color: white; }
.btn--ghost { background: transparent; border-color: transparent; }
.btn--lg { padding: 14px 22px; font-size: var(--ai-fs-lg); }
.btn--block { width: 100%; }

/* Forms */
.input-group { display: flex; flex-direction: column; gap: var(--ai-space-xs); margin-bottom: var(--ai-space-md); }
.input-group > label { font-weight: var(--ai-fw-medium); }
.input-group > .hint { color: var(--ai-text-muted); font-size: var(--ai-fs-sm); }

.input, .textarea, select.input {
  font-size: 16px;
  font-family: var(--ai-font-sans);
  color: var(--ai-text);
  background: var(--ai-surface-2);
  border: 1px solid var(--ai-border);
  border-radius: var(--ai-radius-md);
  padding: 12px 14px;
  min-height: 44px;
  width: 100%;
}
.textarea { min-height: 100px; resize: vertical; }
.input:focus, .textarea:focus { border-color: var(--ai-border-focus); }
.input-error { border-color: var(--ai-accent-danger); }
.input-error-msg { color: var(--ai-accent-danger); font-size: var(--ai-fs-sm); }

/* Icons */
.icon { width: 24px; height: 24px; stroke: currentColor; stroke-width: 1.5; fill: none; vertical-align: middle; }
.icon--sm { width: 16px; height: 16px; }
.icon--lg { width: 32px; height: 32px; }
.icon--xl { width: 48px; height: 48px; }
.icon--xxl { width: 64px; height: 64px; }

/* Toast */
.toast-stack { position: fixed; top: var(--ai-space-md); right: var(--ai-space-md); display: flex; flex-direction: column; gap: var(--ai-space-sm); z-index: var(--ai-z-toast); }
.toast { background: var(--ai-surface-2); border: 1px solid var(--ai-border); padding: 12px 16px; border-radius: var(--ai-radius-md); min-width: 240px; box-shadow: var(--ai-shadow-md); }
.toast--success { border-left: 4px solid var(--ai-accent-success); }
.toast--error { border-left: 4px solid var(--ai-accent-danger); }
.toast--info { border-left: 4px solid var(--ai-accent-secondary); }

/* Admin layout */
.layout-admin { display: grid; grid-template-columns: 280px 1fr; min-height: 100vh; transition: grid-template-columns var(--ai-dur-fast, 180ms) ease; }
.layout-admin__sidebar { background: var(--ai-surface); border-right: 1px solid var(--ai-border); padding: var(--ai-space-lg); display: flex; flex-direction: column; overflow: hidden; transition: padding var(--ai-dur-fast, 180ms) ease, border-color var(--ai-dur-fast, 180ms) ease; }
.layout-admin__sidebar nav { flex: 1 1 auto; min-height: 0; overflow-y: auto; }
.layout-admin__sidebar-footer { margin-top: auto; padding-top: var(--ai-space-md); }
.layout-admin__brand { display: block; text-decoration: none; color: inherit; }
.layout-admin__brand:hover h1 { color: var(--ai-accent-primary); }

/* Sidebar event nav */
.sidebar-events { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: var(--ai-space-xs); }
.sidebar-event-item { display: flex; justify-content: space-between; align-items: center; gap: var(--ai-space-sm); padding: 8px 10px; border-radius: var(--ai-radius-md); color: var(--ai-text); text-decoration: none; border: 1px solid transparent; }
.sidebar-event-item:hover { background: var(--ai-surface-2); border-color: var(--ai-border); }
.sidebar-event-item.is-active { background: var(--ai-surface-2); border-color: var(--ai-accent-primary); }
.sidebar-event-item__title { font-weight: var(--ai-fw-medium); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1 1 auto; min-width: 0; }
.layout-admin__main { padding: var(--ai-space-lg); min-width: 0; }
.layout-admin__header { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--ai-space-lg); }

/* Sidebar toggle (hamburger) */
.sidebar-toggle { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; background: transparent; border: 1px solid var(--ai-border); border-radius: var(--ai-radius-md); cursor: pointer; color: var(--ai-text); transition: background var(--ai-dur-fast, 180ms) ease, border-color var(--ai-dur-fast, 180ms) ease; }
.sidebar-toggle:hover, .sidebar-toggle:focus-visible { background: var(--ai-surface-2); border-color: var(--ai-accent-primary); outline: none; }
.sidebar-toggle__icon { display: block; }

/* Collapsed state — applied on <body> */
body.sidebar-collapsed .layout-admin { grid-template-columns: 0 1fr; }
body.sidebar-collapsed .layout-admin__sidebar { padding-left: 0; padding-right: 0; border-right-color: transparent; visibility: hidden; }

@media (max-width: 768px) {
  .layout-admin { grid-template-columns: 1fr; }
  .layout-admin__sidebar { border-right: none; border-bottom: 1px solid var(--ai-border); }
  body.sidebar-collapsed .layout-admin__sidebar { display: none; }
}

/* Results grid */
.results-grid {
  display: grid;
  gap: var(--ai-space-md);
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  grid-auto-rows: 1fr;
}
.results-card { display: flex; flex-direction: column; min-width: 0; height: 100%; }
.results-card h3 { word-break: break-word; }
.chart-wrapper { position: relative; height: 180px; width: 100%; flex: 0 0 auto; }
.chart-wrapper > canvas { width: 100% !important; height: 100% !important; }
.result-table-wrap { overflow-x: auto; }
.result-table { width: 100%; }
.results-open { max-height: 160px; overflow-y: auto; }
@media (min-width: 1400px) {
  .results-grid { grid-template-columns: repeat(auto-fill, minmax(360px, 1fr)); }
}

/* Event tile */
.event-tile { background: var(--ai-surface); border: 1px solid var(--ai-border); border-radius: var(--ai-radius-lg); padding: var(--ai-space-md); margin-bottom: var(--ai-space-sm); cursor: pointer; transition: border-color var(--ai-dur-fast); }
.event-tile:hover, .event-tile:focus-within { border-color: var(--ai-accent-primary); }
.event-tile--static { cursor: default; }
.event-tile--static:hover, .event-tile--static:focus-within { border-color: var(--ai-border); }
.event-tile__title { font-weight: var(--ai-fw-bold); margin-bottom: var(--ai-space-xs); }
.event-tile__meta { display: flex; gap: var(--ai-space-sm); font-size: var(--ai-fs-sm); color: var(--ai-text-muted); flex-wrap: wrap; }
.state-badge { display: inline-flex; align-items: center; padding: 2px 10px; border-radius: var(--ai-radius-pill); font-size: var(--ai-fs-xs); font-weight: var(--ai-fw-medium); }
.state-badge--preparato { background: rgba(156,163,175,0.2); color: var(--ai-text-muted); }
.state-badge--in_votazione { background: rgba(34,197,94,0.2); color: var(--ai-accent-success); }
.state-badge--terminato { background: rgba(99,102,241,0.2); color: var(--ai-text-link); }

/* Empty state */
.empty-state { text-align: center; padding: var(--ai-space-2xl) var(--ai-space-lg); display: flex; flex-direction: column; align-items: center; gap: var(--ai-space-md); }
.empty-state__icon { color: var(--ai-text-muted); }
.empty-state__title { font-size: var(--ai-fs-xl); font-weight: var(--ai-fw-bold); }
.empty-state__copy { color: var(--ai-text-muted); max-width: 420px; }

/* Question card / public */
.question-card { background: var(--ai-surface); border: 1px solid var(--ai-border); border-radius: var(--ai-radius-lg); padding: var(--ai-space-lg); margin-bottom: var(--ai-space-md); }
.question-card__title { font-size: var(--ai-fs-xl); font-weight: var(--ai-fw-bold); margin-bottom: var(--ai-space-md); }
.option-btn { display: flex; align-items: center; padding: 14px 16px; border: 1px solid var(--ai-border); border-radius: var(--ai-radius-md); background: var(--ai-surface-2); margin-bottom: var(--ai-space-sm); cursor: pointer; width: 100%; text-align: left; color: var(--ai-text); font-size: var(--ai-fs-md); transition: border-color var(--ai-dur-fast), background var(--ai-dur-fast); }
.option-btn:hover, .option-btn:focus-visible { border-color: var(--ai-accent-primary); }
.option-btn--selected { border-color: var(--ai-accent-primary); background: rgba(99,102,241,0.15); }
/* Read-only chip variant used on the summary page — visual only, not interactive */
.option-btn--static { cursor: default; }
.option-btn--static:hover, .option-btn--static:focus-visible { border-color: var(--ai-accent-primary); }

/* Leaderboard */
.leaderboard { background: var(--ai-surface); border: 1px solid var(--ai-border); border-radius: var(--ai-radius-lg); padding: var(--ai-space-md); }
.leaderboard__entry { display: flex; align-items: center; gap: var(--ai-space-sm); padding: var(--ai-space-xs) 0; }
.nickname-chip { display: inline-flex; align-items: center; padding: 4px 10px; border-radius: var(--ai-radius-pill); font-weight: var(--ai-fw-medium); font-size: var(--ai-fs-sm); }

/* Counter */
.counter-pill { display: inline-flex; gap: var(--ai-space-xs); padding: 6px 14px; border-radius: var(--ai-radius-pill); background: var(--ai-surface-2); font-weight: var(--ai-fw-bold); }

/* Reveal */
.reveal-stage { position: fixed; inset: 0; background: var(--ai-bg); z-index: var(--ai-z-reveal); display: flex; flex-direction: column; align-items: center; justify-content: center; padding: var(--ai-space-xl); }
.reveal-stage__question { font-family: var(--ai-font-display); font-size: clamp(28px, 5vw, 56px); text-align: center; margin-bottom: var(--ai-space-xl); }
.reveal-stage__result { font-family: var(--ai-font-display); font-size: clamp(40px, 8vw, 100px); color: var(--ai-accent-primary); text-align: center; }

/* Result table */
.result-table { width: 100%; border-collapse: collapse; }
.result-table th, .result-table td { padding: var(--ai-space-sm); border-bottom: 1px solid var(--ai-border); text-align: left; }

/* Modal */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.6); display: flex; align-items: center; justify-content: center; z-index: var(--ai-z-modal); padding: var(--ai-space-md); }
.modal { background: var(--ai-surface); border: 1px solid var(--ai-border); border-radius: var(--ai-radius-lg); padding: var(--ai-space-lg); max-width: 480px; width: 100%; }