/* ChatChat — console di amministrazione. Strumento serio: contrasto, bersagli grandi, nessun effetto.
   Gli stessi token del workspace (styles.css), duplicati qui perché la pagina è indipendente.
   Un solo elemento forte: il blocco "visibile una volta sola" (link di reset, etichetta QR). */

:root {
  color-scheme: light dark;

  --bg: #e8ecf0;
  --surface: #ffffff;
  --surface-2: #f2f5f8;
  --ink: #101c26;
  --ink-2: #3a4a58;
  --line: #c3ccd5;
  --line-strong: #66788a; /* contorni dei controlli: >= 3:1 */
  --accent: #0b5a8c;
  --accent-ink: #ffffff;
  --accent-soft: #dcebf6;
  --warn-bg: #fff1cf;
  --warn-ink: #4d3000;
  --warn-line: #a35f00;
  --stop-bg: #fbe1e3;
  --stop-ink: #6e0d1b;
  --stop-line: #b3162b;
  --stop-solid: #a8132a;
  --stop-solid-ink: #ffffff;
  --ok-bg: #dff3e6;
  --ok-ink: #0d5a2c;
  --err-ink: #8a1020;
  --focus: #0b5a8c;
  --backdrop: rgb(8 16 22 / 0.62);

  --font: 'Segoe UI', 'Roboto', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
  --mono: ui-monospace, 'SF Mono', 'Cascadia Mono', 'Roboto Mono', Menlo, Consolas, monospace;
  --tap: 2.75rem;
  --radius: 0.5rem;
  --side: 14.5rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d151c;
    --surface: #16212a;
    --surface-2: #1d2b36;
    --ink: #e9eff4;
    --ink-2: #b4c2cd;
    --line: #2f4251;
    --line-strong: #8499ab;
    --accent: #8cc8f0;
    --accent-ink: #06202f;
    --accent-soft: #1b3447;
    --warn-bg: #3a2c08;
    --warn-ink: #ffe3a6;
    --warn-line: #e3a42c;
    --stop-bg: #4a1019;
    --stop-ink: #ffdadd;
    --stop-line: #ff7684;
    --stop-solid: #ff7684;
    --stop-solid-ink: #2c050b;
    --ok-bg: #12301f;
    --ok-ink: #7fdba0;
    --err-ink: #ff9aa5;
    --focus: #8cc8f0;
    --backdrop: rgb(0 0 0 / 0.7);
  }
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  line-height: 1.5;
}

[hidden] {
  display: none !important;
}

h1,
h2,
h3,
p,
ul,
ol,
dl,
dd,
figure {
  margin: 0;
}
h1 {
  font-size: 1.4rem;
  line-height: 1.25;
}
h2 {
  font-size: 1.15rem;
}
h3 {
  font-size: 1rem;
}
a {
  color: var(--accent);
}

.mono {
  font-family: var(--mono);
  letter-spacing: 0;
}
.muted {
  color: var(--ink-2);
}
.small {
  font-size: 0.875rem;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: 0.5rem;
  top: -4rem;
  z-index: 100;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
}
.skip-link:focus {
  top: 0.5rem;
}
.noscript,
.denied {
  padding: 1rem;
  background: var(--warn-bg);
  color: var(--warn-ink);
}

/* ---------- Struttura ---------- */

.shell {
  min-height: 100dvh;
  display: grid;
  grid-template-columns: var(--side) minmax(0, 1fr);
  grid-template-rows: auto 1fr;
  grid-template-areas:
    'top top'
    'side view';
}
.topbar {
  grid-area: top;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  padding: 0.5rem 1rem;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.topbar-brand {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
}
.brand {
  font-size: 1.2rem;
  font-weight: 700;
}
.brand-sub {
  color: var(--ink-2);
}
.topbar-tools {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
}
.who {
  font-weight: 600;
}
.side {
  grid-area: side;
  padding: 1rem 0.5rem 1rem 1rem;
  border-right: 1px solid var(--line);
  background: var(--surface-2);
}
.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.nav-link {
  display: flex;
  align-items: center;
  min-height: var(--tap);
  padding: 0.4rem 0.75rem;
  border-left: 4px solid transparent;
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
}
.nav-link:hover {
  background: var(--accent-soft);
}
.nav-link[aria-current='page'] {
  border-left-color: var(--accent);
  background: var(--accent-soft);
}
.view {
  grid-area: view;
  min-width: 0;
  padding: 1.25rem 1.5rem 3rem;
}
.view:focus {
  outline: none;
}
.sec-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.25rem;
}
.sec-head h1:focus {
  outline: none;
}
.sec-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.lead {
  max-width: 70ch;
  margin-bottom: 1rem;
}

/* ---------- Controlli ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: var(--tap);
  padding: 0.4rem 1rem;
  border: 2px solid transparent;
  border-radius: var(--radius);
  font: inherit;
  font-weight: 600;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}
.btn:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}
.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
}
.btn-secondary {
  background: var(--surface);
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn-danger {
  background: var(--stop-solid);
  color: var(--stop-solid-ink);
}
.btn-quiet {
  background: transparent;
  color: var(--ink);
}
.btn-sm {
  min-height: 2.5rem;
  padding: 0.25rem 0.8rem;
}
.btn-row,
.inline {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.btn-col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
}
.inline input {
  flex: 1;
  min-width: 0;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-bottom: 0.85rem;
  min-width: 0;
}
.field > label,
legend {
  font-weight: 600;
}
.field-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 0 0.9rem;
}
.check {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-height: var(--tap);
}
.check input {
  width: 1.4rem;
  height: 1.4rem;
  min-height: 0;
  flex: none;
  accent-color: var(--accent);
}
input,
select,
textarea {
  width: 100%;
  min-height: var(--tap);
  padding: 0.45rem 0.7rem;
  font: inherit;
  color: var(--ink);
  background: var(--surface);
  border: 2px solid var(--line-strong);
  border-radius: var(--radius);
}
input[type='checkbox'] {
  width: 1.4rem;
  height: 1.4rem;
  min-height: 0;
  accent-color: var(--accent);
}
input:disabled,
select:disabled {
  opacity: 0.65;
}
textarea {
  resize: vertical;
  line-height: 1.45;
}
.lang-select {
  width: auto;
  min-height: 2.5rem;
}
.hint {
  color: var(--ink-2);
  font-size: 0.875rem;
}
.form-error {
  color: var(--err-ink);
  font-weight: 600;
  margin: 0.5rem 0;
}
.form-error::before {
  content: '✖ ';
}
.fieldset {
  border: 2px solid var(--line);
  border-radius: var(--radius);
  padding: 0.5rem 0.9rem 0.75rem;
  margin: 0 0 0.85rem;
}
.sub {
  margin: 1rem 0 0.4rem;
}
.note {
  padding: 0.6rem 0.8rem;
  margin: 0.75rem 0;
  border-left: 4px solid var(--line-strong);
  background: var(--surface-2);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.note-warn {
  border-color: var(--warn-line);
  background: var(--warn-bg);
  color: var(--warn-ink);
}
.note-stop {
  border-color: var(--stop-line);
  background: var(--stop-bg);
  color: var(--stop-ink);
}

/* ---------- Mobile ---------- */

@media (max-width: 56rem) {
  .shell {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      'top'
      'side'
      'view';
  }
  .side {
    padding: 0.5rem;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    overflow-x: auto;
  }
  .nav-list {
    flex-direction: row;
    gap: 0.25rem;
  }
  .nav-link {
    border-left: 0;
    border-bottom: 4px solid transparent;
    border-radius: var(--radius) var(--radius) 0 0;
    white-space: nowrap;
  }
  .nav-link[aria-current='page'] {
    border-bottom-color: var(--accent);
  }
  .view {
    padding: 1rem 0.75rem 3rem;
  }
}
@media (pointer: coarse) {
  :root {
    --tap: 3rem;
  }
}