/* =============================================================
   Innova Survey — design tokens
   ============================================================= */

:root {
  --c-bg: #f6f7f9;
  --c-surface: #ffffff;
  --c-surface-2: #fafbfc;
  --c-border: #e3e6ec;
  --c-border-strong: #cbd1db;
  --c-text: #14181f;
  --c-text-muted: #5b6471;
  --c-text-soft: #828b97;

  --c-accent: #2b56d4;
  --c-accent-strong: #1f3fa6;
  --c-accent-soft: #eaf0ff;
  --c-accent-text: #ffffff;

  --c-danger: #b8251a;
  --c-success: #117a3e;

  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 14px;

  --shadow-sm: 0 1px 2px rgba(15, 22, 36, 0.05), 0 1px 1px rgba(15, 22, 36, 0.04);
  --shadow-md: 0 4px 12px rgba(15, 22, 36, 0.07), 0 2px 4px rgba(15, 22, 36, 0.04);
  --shadow-lg: 0 16px 32px rgba(15, 22, 36, 0.10), 0 4px 8px rgba(15, 22, 36, 0.05);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, 'JetBrains Mono', Menlo, Consolas, monospace;

  --max-content-width: 760px;
  --sidebar-width: 280px;
  --topbar-height: 56px;
}

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

[hidden] { display: none !important; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--c-accent);
  text-decoration: none;
}
a:hover { text-decoration: underline; }

code {
  font-family: var(--font-mono);
  font-size: 0.92em;
  padding: 1px 5px;
  background: var(--c-surface-2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
}

button {
  font-family: inherit;
  font-size: 1rem;
}

/* =============================================================
   Bottoni
   ============================================================= */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-weight: 500;
  line-height: 1.2;
  padding: 0.65rem 1.1rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 120ms ease, border-color 120ms ease, color 120ms ease, transform 80ms ease;
  text-align: center;
  white-space: nowrap;
}
.btn:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--c-accent) 35%, transparent);
  outline-offset: 2px;
}
.btn:disabled { opacity: 0.6; cursor: not-allowed; }
.btn:active:not(:disabled) { transform: translateY(1px); }

.btn-primary {
  background: var(--c-accent);
  color: var(--c-accent-text);
  border-color: var(--c-accent);
}
.btn-primary:hover:not(:disabled) { background: var(--c-accent-strong); border-color: var(--c-accent-strong); }

.btn-ghost {
  background: transparent;
  color: var(--c-text);
  border-color: var(--c-border-strong);
}
.btn-ghost:hover:not(:disabled) {
  background: var(--c-surface);
  border-color: var(--c-text-muted);
}

.btn-add {
  background: var(--c-accent-soft);
  color: var(--c-accent-strong);
  border-color: transparent;
  font-weight: 500;
  padding: 0.55rem 1rem;
  border-radius: var(--radius);
}
.btn-add:hover:not(:disabled) {
  background: color-mix(in srgb, var(--c-accent-soft) 70%, white);
  box-shadow: inset 0 0 0 1px var(--c-accent);
}

.btn-remove {
  background: transparent;
  color: var(--c-text-muted);
  border: 1px solid var(--c-border);
  font-size: 0.9rem;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
}
.btn-remove:hover:not(:disabled) {
  color: var(--c-danger);
  border-color: var(--c-danger);
}

.btn-sm { font-size: 0.9rem; padding: 0.45rem 0.8rem; }
.btn-lg { font-size: 1.05rem; padding: 0.85rem 1.6rem; }

/* =============================================================
   Login
   ============================================================= */

.login-body {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background:
    radial-gradient(1200px 600px at 80% -10%, color-mix(in srgb, var(--c-accent) 9%, transparent), transparent 60%),
    radial-gradient(800px 500px at -10% 110%, color-mix(in srgb, var(--c-accent) 7%, transparent), transparent 60%),
    var(--c-bg);
  padding: 2rem 1rem;
}

.login-card {
  width: 100%;
  max-width: 440px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 2.4rem 2.2rem;
}

.login-eyebrow {
  margin: 0 0 0.6rem;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-text-muted);
  font-weight: 600;
}

.login-header h1 {
  margin: 0 0 0.6rem;
  font-size: 1.6rem;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.login-sub {
  margin: 0;
  color: var(--c-text-muted);
  font-size: 0.95rem;
}

.login-form {
  margin-top: 1.8rem;
  display: grid;
  gap: 1.1rem;
}

.field label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.35rem;
  color: var(--c-text);
}

.field input[type="text"],
.field input[type="password"] {
  width: 100%;
  padding: 0.7rem 0.85rem;
  font-size: 1rem;
  border: 1px solid var(--c-border-strong);
  border-radius: var(--radius);
  background: var(--c-surface);
  color: var(--c-text);
  transition: border-color 120ms ease, box-shadow 120ms ease;
}
.field input:focus {
  outline: none;
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--c-accent) 18%, transparent);
}

.field .hint {
  margin: 0.35rem 0 0;
  font-size: 0.82rem;
  color: var(--c-text-soft);
}

.login-error {
  margin: 0;
  padding: 0.6rem 0.8rem;
  background: color-mix(in srgb, var(--c-danger) 8%, white);
  color: var(--c-danger);
  border: 1px solid color-mix(in srgb, var(--c-danger) 25%, white);
  border-radius: var(--radius);
  font-size: 0.9rem;
}

.login-footer {
  margin-top: 1.8rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--c-border);
  font-size: 0.85rem;
  color: var(--c-text-muted);
}
.login-footer p { margin: 0; }

/* =============================================================
   Topbar
   ============================================================= */

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
}

.topbar-inner {
  max-width: 1280px;
  margin: 0 auto;
  height: var(--topbar-height);
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.topbar-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.93rem;
  color: var(--c-text-muted);
}
.topbar-brand strong { color: var(--c-text); font-weight: 600; }
.topbar-sep { color: var(--c-border-strong); }

.topbar-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.user-label {
  font-size: 0.92rem;
  color: var(--c-text-muted);
}

/* =============================================================
   Survey shell
   ============================================================= */

.survey-shell {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  gap: 2.5rem;
  align-items: start;
}

.sidebar {
  position: sticky;
  top: calc(var(--topbar-height) + 1.5rem);
  align-self: start;
  padding: 2rem 0;
}

.sidebar-inner {
  display: grid;
  gap: 1.4rem;
}

.progress-block {
  display: grid;
  gap: 0.5rem;
}
.progress-bar {
  width: 100%;
  height: 6px;
  background: var(--c-border);
  border-radius: 999px;
  overflow: hidden;
}
.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--c-accent);
  border-radius: 999px;
  transition: width 280ms cubic-bezier(.2,.8,.2,1);
}
.progress-label {
  margin: 0;
  font-size: 0.85rem;
  color: var(--c-text-muted);
}
.progress-label span { color: var(--c-text); font-weight: 600; }

.toc {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  border-left: 1px solid var(--c-border);
  padding-left: 0.9rem;
}

.toc-link {
  display: block;
  padding: 0.45rem 0.5rem;
  border-radius: var(--radius-sm);
  color: var(--c-text-muted);
  font-size: 0.92rem;
  line-height: 1.4;
  text-decoration: none;
  transition: background 120ms ease, color 120ms ease;
}
.toc-link:hover {
  background: var(--c-surface);
  color: var(--c-text);
  text-decoration: none;
}

.content {
  padding: 2rem 0 6rem;
  min-width: 0;
}

.loading {
  padding: 3rem 0;
  color: var(--c-text-muted);
  text-align: center;
}

/* =============================================================
   Sezioni
   ============================================================= */

.section {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 1.8rem 2rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
  scroll-margin-top: calc(var(--topbar-height) + 1rem);
}

.section-header {
  margin-bottom: 1.5rem;
}

.section-title {
  margin: 0 0 0.4rem;
  font-size: 1.4rem;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.pill {
  display: inline-block;
  vertical-align: middle;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 999px;
  margin-left: 0.4rem;
  position: relative;
  top: -2px;
}
.pill-optional {
  background: var(--c-surface-2);
  color: var(--c-text-muted);
  border: 1px solid var(--c-border);
}

.section-responsibile {
  margin: 0.2rem 0 0.7rem;
  font-size: 0.88rem;
  color: var(--c-accent-strong);
  font-weight: 500;
}

.section-intro {
  margin: 0.4rem 0 0.6rem;
  color: var(--c-text-muted);
  font-size: 0.96rem;
}

.section-bullets {
  margin: 0.6rem 0 0;
  padding-left: 1.2rem;
  color: var(--c-text-muted);
  font-size: 0.95rem;
}
.section-bullets li {
  margin-bottom: 0.3rem;
}
.section-bullets li::marker {
  color: var(--c-text-soft);
}

.section-fields {
  display: grid;
  gap: 1.4rem;
}

/* Separator (titolo "Sezione trasversale") */
.separator {
  margin: 2.5rem 0 1.2rem;
  padding: 1.4rem 1.8rem;
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--c-accent-soft), color-mix(in srgb, var(--c-accent-soft) 30%, white));
  border: 1px solid color-mix(in srgb, var(--c-accent) 18%, transparent);
}
.separator-title {
  margin: 0 0 0.4rem;
  font-size: 1.15rem;
  letter-spacing: 0.01em;
  color: var(--c-accent-strong);
}
.separator-intro {
  margin: 0;
  font-size: 0.95rem;
  color: var(--c-text-muted);
}

/* =============================================================
   Field
   ============================================================= */

.field-label {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.4rem;
  line-height: 1.4;
  color: var(--c-text);
}

.field-hint {
  margin: -0.2rem 0 0.4rem;
  font-size: 0.84rem;
  color: var(--c-text-soft);
}

.field-singleline input[type="text"] {
  width: 100%;
  padding: 0.6rem 0.8rem;
  font-size: 0.97rem;
  border: 1px solid var(--c-border-strong);
  border-radius: var(--radius);
  background: var(--c-surface);
  color: var(--c-text);
  transition: border-color 120ms ease, box-shadow 120ms ease;
}
.field-singleline input[type="text"]:focus {
  outline: none;
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--c-accent) 15%, transparent);
}

/* Trix editor */
.field-richtext trix-editor {
  display: block;
  min-height: 110px;
  padding: 0.7rem 0.85rem;
  font-size: 0.97rem;
  line-height: 1.55;
  border: 1px solid var(--c-border-strong);
  border-radius: var(--radius);
  background: var(--c-surface);
  color: var(--c-text);
  transition: border-color 120ms ease, box-shadow 120ms ease;
}
.field-richtext trix-editor:focus {
  outline: none;
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--c-accent) 15%, transparent);
}

/* Trix inietta automaticamente una <trix-toolbar> prima di ogni <trix-editor>.
   Le icone provengono dal CSS di Trix (background-image SVG). Qui adattiamo
   solo l'aspetto al resto della UI. */
trix-toolbar {
  display: block;
  margin-bottom: 0.45rem;
}
.trix-button-row {
  display: flex !important;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
}
.trix-button-group {
  display: inline-flex !important;
  margin: 0 !important;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--c-border) !important;
  background: var(--c-surface);
}
.trix-button {
  border: 0 !important;
  border-right: 1px solid var(--c-border) !important;
  background: transparent;
  padding: 0 !important;
  width: 32px;
  height: 30px;
  cursor: pointer;
}
.trix-button:last-child { border-right: 0 !important; }
.trix-button:hover:not(:disabled) { background: var(--c-surface-2); }
.trix-button.trix-active {
  background: var(--c-accent-soft);
  color: var(--c-accent-strong);
}
.trix-button-group-spacer { flex: 1; }

/* Rimuovi i bottoni che non servono: heading, citazione, code, strike,
   allegati. Tieni: bold, italic, link, bullet, numerati, nesting, history. */
.trix-button--icon-heading-1,
.trix-button--icon-quote,
.trix-button--icon-code,
.trix-button--icon-strike,
.trix-button-group--file-tools {
  display: none !important;
}

/* =============================================================
   Repeating items
   ============================================================= */

.field-repeating {
  display: grid;
  gap: 0.9rem;
}

.repeating-items {
  display: grid;
  gap: 1rem;
}

.repeating-item {
  border: 1px solid var(--c-border);
  border-left: 3px solid var(--c-accent);
  border-radius: var(--radius);
  background: var(--c-surface-2);
  padding: 1.1rem 1.2rem;
  animation: pop-in 220ms cubic-bezier(.2,.8,.2,1);
}

@keyframes pop-in {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.repeating-item-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.9rem;
}

.repeating-item-title {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--c-text-muted);
  letter-spacing: 0.02em;
}

.repeating-item-fields {
  display: grid;
  gap: 0.9rem;
}

/* =============================================================
   Tabella (matrice di visibilità)
   ============================================================= */

.field-table {
  display: grid;
  gap: 0.8rem;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  background: var(--c-surface);
}

.field-table table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.93rem;
}

.field-table thead th {
  text-align: left;
  font-weight: 600;
  font-size: 0.84rem;
  letter-spacing: 0.02em;
  color: var(--c-text-muted);
  background: var(--c-surface-2);
  padding: 0.7rem 0.8rem;
  border-bottom: 1px solid var(--c-border);
}

.field-table tbody td {
  padding: 0.45rem 0.5rem;
  border-bottom: 1px solid var(--c-border);
}
.field-table tbody tr:last-child td { border-bottom: 0; }

.field-table tbody input[type="text"] {
  width: 100%;
  padding: 0.45rem 0.55rem;
  font-size: 0.93rem;
  border: 1px solid transparent;
  background: transparent;
  border-radius: var(--radius-sm);
}
.field-table tbody input[type="text"]:focus {
  outline: none;
  background: var(--c-surface);
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--c-accent) 15%, transparent);
}

.table-actions {
  width: 36px;
  text-align: center;
}

.btn-remove-row {
  background: transparent;
  border: 0;
  color: var(--c-text-soft);
  width: 26px;
  height: 26px;
  border-radius: 50%;
  font-size: 1.1rem;
  cursor: pointer;
  line-height: 1;
}
.btn-remove-row:hover {
  color: var(--c-danger);
  background: color-mix(in srgb, var(--c-danger) 10%, transparent);
}

/* =============================================================
   Footer azioni di submit
   ============================================================= */

.footer-actions {
  position: sticky;
  bottom: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--c-surface) 96%, transparent);
  border-top: 1px solid var(--c-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.footer-actions-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.footer-note {
  margin: 0;
  font-size: 0.86rem;
  color: var(--c-text-muted);
  max-width: 520px;
}

/* =============================================================
   Modale
   ============================================================= */

.modal {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: 1rem;
}
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 22, 36, 0.35);
  backdrop-filter: blur(2px);
}
.modal-card {
  position: relative;
  background: var(--c-surface);
  border-radius: var(--radius-lg);
  padding: 1.6rem 1.8rem;
  width: 100%;
  max-width: 460px;
  box-shadow: var(--shadow-lg);
  animation: modal-in 180ms cubic-bezier(.2,.8,.2,1);
}
@keyframes modal-in {
  from { opacity: 0; transform: translateY(8px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
.modal-title {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
}
.modal-body {
  margin: 0;
  color: var(--c-text-muted);
}
.modal-actions {
  margin-top: 1.4rem;
  display: flex;
  justify-content: flex-end;
  gap: 0.6rem;
}

body.modal-open { overflow: hidden; }

/* =============================================================
   Toast
   ============================================================= */

.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--c-text);
  color: white;
  padding: 0.7rem 1.1rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  font-size: 0.92rem;
  z-index: 60;
}

/* =============================================================
   Schermata di successo
   ============================================================= */

.survey-shell--success { grid-template-columns: 1fr; }

.success-card {
  max-width: 560px;
  margin: 4rem auto;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 2.4rem 2.4rem;
  text-align: center;
  box-shadow: var(--shadow-md);
}
.success-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 1rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: color-mix(in srgb, var(--c-success) 15%, white);
  color: var(--c-success);
  font-size: 1.6rem;
  font-weight: 700;
}
.success-card h2 {
  margin: 0 0 0.6rem;
  font-size: 1.35rem;
}
.success-card p {
  margin: 0.4rem 0;
  color: var(--c-text-muted);
}
.success-meta {
  margin-top: 1rem !important;
  font-size: 0.88rem;
}
.success-actions {
  margin-top: 1.6rem;
  display: flex;
  justify-content: center;
  gap: 0.8rem;
}

/* =============================================================
   Responsive
   ============================================================= */

@media (max-width: 920px) {
  .survey-shell {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .sidebar {
    position: static;
    padding: 1.2rem 0 0;
  }
  .toc {
    flex-direction: row;
    flex-wrap: wrap;
    border-left: 0;
    padding-left: 0;
    border-top: 1px solid var(--c-border);
    padding-top: 0.8rem;
    gap: 0.4rem;
  }
  .toc-link {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
  }
  .section {
    padding: 1.4rem 1.3rem;
  }
}

@media (max-width: 600px) {
  .topbar-brand span:not(.topbar-sep) { display: none; }
  .topbar-brand .topbar-sep { display: none; }
  .footer-actions-inner {
    flex-direction: column;
    align-items: stretch;
  }
  .footer-note { max-width: none; }
  .login-card { padding: 1.8rem 1.5rem; }
}