/*
 * Tema chiaro e scuro.
 *
 * Senza scelta esplicita si segue il sistema; l'interruttore nella barra in alto
 * scrive data-theme sull'elemento <html> e ha la precedenza. I due blocchi scuri
 * qui sotto sono identici di proposito — uno per il sistema, uno per la scelta
 * manuale — perche' CSS non permette di unire una media query e un selettore in
 * un'unica regola: se ne modifichi uno, modifica anche l'altro.
 */
:root {
  color-scheme: light;
  --bg: #f5f6f8;
  --surface: #ffffff;
  --surface-2: #fafbfc;
  --border: #e4e7ec;
  --text: #1a1f2b;
  --muted: #6b7385;
  --accent: #2f6bff;
  --accent-soft: #eaf0ff;
  --ok: #12925f;
  --ok-soft: #e4f6ee;
  --warn: #b26a00;
  --warn-soft: #fdf1de;
  --err: #d13b3b;
  --err-soft: #fdeaea;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 8px 24px rgba(16, 24, 40, .05);
  --radius: 12px;
  --sidebar: 240px;
}

/* Sistema scuro, purche' l'utente non abbia scelto il chiaro. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #10131a;
    --surface: #171b24;
    --surface-2: #1d222d;
    --border: #2a3040;
    --text: #e7eaf0;
    --muted: #98a1b5;
    --accent: #5b8bff;
    --accent-soft: #1c2740;
    --ok: #35c48a;
    --ok-soft: #142b23;
    --warn: #e0a03c;
    --warn-soft: #2e2415;
    --err: #f37272;
    --err-soft: #33191b;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
  }
}

/* Scelta manuale dello scuro: vale anche con il sistema in chiaro. */
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #10131a;
  --surface: #171b24;
  --surface-2: #1d222d;
  --border: #2a3040;
  --text: #e7eaf0;
  --muted: #98a1b5;
  --accent: #5b8bff;
  --accent-soft: #1c2740;
  --ok: #35c48a;
  --ok-soft: #142b23;
  --warn: #e0a03c;
  --warn-soft: #2e2415;
  --err: #f37272;
  --err-soft: #33191b;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
}

* { box-sizing: border-box; }

/* Le classi qui sotto dichiarano "display", che avrebbe la meglio sulla regola
   predefinita del browser per [hidden]: senza questa riga gli elementi nascosti
   via JavaScript resterebbero visibili. */
[hidden] { display: none !important; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { margin: 0; font-weight: 600; letter-spacing: -.01em; }
h1 { font-size: 21px; }
h2 { font-size: 16px; }
h3 { font-size: 14px; }
p { margin: 0; }
a { color: var(--accent); }

/* ------------------------------------------------------------------- login */

.login-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 36px;
  width: min(100%, 380px);
}

.login-card .logo { font-size: 30px; margin-bottom: 14px; }
.login-card h1 { margin-bottom: 6px; }
.login-card p { color: var(--muted); margin-bottom: 22px; }

/* ------------------------------------------------------------------ layout */

.layout { display: flex; min-height: 100vh; }

.sidebar {
  width: var(--sidebar);
  flex: 0 0 var(--sidebar);
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 20px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 10px 18px;
  font-weight: 650;
  font-size: 15px;
}
.brand .dot {
  width: 30px; height: 30px; border-radius: 9px;
  background: var(--accent); color: #fff;
  display: grid; place-items: center; font-size: 15px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 11px;
  border-radius: 9px;
  color: var(--muted);
  cursor: pointer;
  border: 0;
  background: none;
  width: 100%;
  text-align: left;
  font: inherit;
  transition: background .12s, color .12s;
}
.nav-item:hover { background: var(--surface-2); color: var(--text); }
.nav-item.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.nav-item .ico { width: 18px; text-align: center; font-size: 15px; }
.nav-item .badge { margin-left: auto; }

.sidebar-foot { margin-top: auto; padding-top: 14px; border-top: 1px solid var(--border); }

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }

.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 20;
}
.topbar .spacer { flex: 1; }
.burger { display: none; }

/* Interruttore del tema: mostra l'icona del tema verso cui si passa. */
.theme-toggle {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  padding: 0;
  flex: 0 0 auto;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: var(--surface);
  color: var(--muted);
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
}
.theme-toggle:hover { background: var(--surface-2); color: var(--text); }
.theme-toggle:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.content { padding: 22px 24px 60px; }

/* ------------------------------------------------------------------- cards */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 18px;
  overflow: hidden;
}
.card-head {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}
.card-head .spacer { flex: 1; }
.card-body { padding: 18px; }
.card-body.tight { padding: 0; }

.grid { display: grid; gap: 14px; }
.grid.stats { grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }

.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: var(--shadow);
}
.stat .label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
.stat .value { font-size: 26px; font-weight: 650; margin-top: 6px; letter-spacing: -.02em; }
.stat .hint { color: var(--muted); font-size: 12px; margin-top: 3px; }

/* ------------------------------------------------------------------ tabelle */

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th {
  text-align: left;
  font-weight: 600;
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .04em;
  padding: 11px 14px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
td { padding: 11px 14px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover { background: var(--surface-2); }
td.actions { white-space: nowrap; text-align: right; }
.nowrap { white-space: nowrap; }
.muted { color: var(--muted); }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12.5px; }

.empty { padding: 44px 20px; text-align: center; color: var(--muted); }
.empty .big { font-size: 30px; margin-bottom: 10px; }

/* ------------------------------------------------------------------ elementi */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 9px;
  padding: 8px 13px;
  font: inherit;
  font-weight: 500;
  cursor: pointer;
  transition: background .12s, border-color .12s, opacity .12s;
  white-space: nowrap;
}
.btn:hover { background: var(--surface-2); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.07); }
.btn.danger { color: var(--err); border-color: transparent; background: transparent; }
.btn.danger:hover { background: var(--err-soft); }
.btn.ghost { border-color: transparent; background: transparent; color: var(--muted); }
.btn.ghost:hover { background: var(--surface-2); color: var(--text); }
.btn.sm { padding: 5px 9px; font-size: 12.5px; border-radius: 7px; }
.btn.block { width: 100%; justify-content: center; }

input, select, textarea {
  width: 100%;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 9px;
  padding: 9px 11px;
  font: inherit;
  transition: border-color .12s, box-shadow .12s;
}
input:focus, select:focus, textarea:focus {
  outline: 0;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
textarea { resize: vertical; min-height: 90px; line-height: 1.6; }
label { display: block; font-weight: 500; margin-bottom: 6px; font-size: 13px; }
.field { margin-bottom: 14px; }
.field .help { color: var(--muted); font-size: 12px; margin-top: 5px; }
.form-grid { display: grid; gap: 0 14px; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }

/* Colonna di selezione delle tabelle: la regola generica sugli input darebbe
   larghezza piena e imbottitura anche alle caselle di spunta. */
.col-check { width: 34px; padding-right: 0 !important; }
.col-check input {
  width: 16px;
  height: 16px;
  padding: 0;
  margin: 0;
  border-radius: 4px;
  accent-color: var(--accent);
  cursor: pointer;
  vertical-align: middle;
}
tr.selezionata > td { background: var(--accent-soft); }

/* Data dei file dell'interfaccia, in fondo alla barra laterale. */
.versione {
  padding: 8px 10px 0;
  font-size: 11px;
  color: var(--muted);
  opacity: .7;
}

/* Barra di navigazione fra le pagine, sotto le tabelle. */
.paginazione {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  padding: 12px 18px;
  border-top: 1px solid var(--border);
  font-size: 13px;
}
.paginazione .spacer { flex: 1; }

/* Riepilogo della selezione, accanto ai filtri. */
.conteggio-selezione {
  color: var(--accent);
  font-weight: 600;
  font-size: 12.5px;
  white-space: nowrap;
}

.check { display: flex; align-items: flex-start; gap: 9px; margin-bottom: 14px; }
.check input { width: auto; margin-top: 2px; flex: 0 0 auto; }
.check label { margin: 0; font-weight: 500; }
.check .help { color: var(--muted); font-size: 12px; }

.toolbar { display: flex; gap: 9px; flex-wrap: wrap; align-items: center; }
.toolbar .search { min-width: 190px; flex: 1; max-width: 320px; }
.toolbar select { width: auto; min-width: 140px; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  background: var(--surface-2);
  color: var(--muted);
  border: 1px solid var(--border);
  white-space: nowrap;
}
button.badge { font: inherit; font-size: 12px; font-weight: 500; cursor: pointer; }
button.badge:hover { filter: brightness(.96); }

.badge.ok { background: var(--ok-soft); color: var(--ok); border-color: transparent; }
.badge.warn { background: var(--warn-soft); color: var(--warn); border-color: transparent; }
.badge.err { background: var(--err-soft); color: var(--err); border-color: transparent; }
.badge.info { background: var(--accent-soft); color: var(--accent); border-color: transparent; }

/* Voto in stelle: le stelle non assegnate restano visibili ma spente. */
.stelle { color: #f5b301; letter-spacing: 1px; white-space: nowrap; }
.stelle .vuote { color: var(--border); }

/* Messaggi lunghi nelle tabelle: si leggono per intero dalla modale "Vedi". */
.clamp {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  max-width: 420px;
}

.note {
  padding: 12px 14px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
  margin-bottom: 16px;
  font-size: 13px;
}
.note.warn { background: var(--warn-soft); color: var(--warn); }
.note.err { background: var(--err-soft); color: var(--err); }
.note.ok { background: var(--ok-soft); color: var(--ok); }

/* ------------------------------------------------------------------- modale */

/*
 * Apertura e chiusura in dissolvenza. Lo stato iniziale è quello "chiuso": la
 * classe .aperta viene aggiunta dal JavaScript subito dopo l'inserimento nel
 * documento, e la classe .chiusa riporta indietro prima di rimuovere il nodo.
 */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(12, 16, 26, .55);
  display: grid;
  place-items: center;
  padding: 20px;
  z-index: 100;
  overflow-y: auto;
  opacity: 0;
  transition: opacity .18s ease;
}
.modal-backdrop.aperta { opacity: 1; }
/* Durante la chiusura la finestra non deve più intercettare i clic. */
.modal-backdrop.chiusa { opacity: 0; pointer-events: none; }

.modal {
  background: var(--surface);
  border-radius: 16px;
  width: min(100%, 620px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, .3);
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  opacity: 0;
  transform: translateY(10px) scale(.985);
  transition: opacity .18s ease, transform .22s cubic-bezier(.2, .8, .3, 1);
}
.modal-backdrop.aperta .modal { opacity: 1; transform: none; }
.modal-backdrop.chiusa .modal { opacity: 0; transform: translateY(6px) scale(.99); }

/* Chi ha chiesto meno animazioni vede comparire e sparire senza movimento. */
@media (prefers-reduced-motion: reduce) {
  .modal-backdrop, .modal { transition: none; }
  .modal { transform: none; }
}
.modal.wide { width: min(100%, 880px); }
.modal-head {
  display: flex; align-items: center; gap: 10px;
  padding: 16px 20px; border-bottom: 1px solid var(--border);
}
.modal-head .spacer { flex: 1; }
.modal-body { padding: 20px; overflow-y: auto; }
.modal-foot {
  display: flex; gap: 9px; justify-content: flex-end;
  padding: 14px 20px; border-top: 1px solid var(--border); flex-wrap: wrap;
}

.preview-frame {
  width: 100%;
  height: 400px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
}

/* ------------------------------------------------------------------- toast */

.toasts { position: fixed; right: 18px; bottom: 18px; display: grid; gap: 9px; z-index: 200; max-width: 360px; }
.toast {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 10px;
  padding: 12px 15px;
  box-shadow: var(--shadow);
  animation: slide .2s ease;
}
.toast.ok { border-left-color: var(--ok); }
.toast.err { border-left-color: var(--err); }
.toast.warn { border-left-color: var(--warn); }
@keyframes slide { from { opacity: 0; transform: translateY(8px); } }

.spinner {
  width: 15px; height: 15px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  display: inline-block;
  animation: spin .6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ------------------------------------------------------------------- mobile */

.overlay { display: none; }

@media (max-width: 900px) {
  .burger { display: inline-flex; }
  .sidebar {
    position: fixed;
    left: 0; top: 0; bottom: 0;
    z-index: 60;
    transform: translateX(-100%);
    transition: transform .2s ease;
    box-shadow: var(--shadow);
  }
  .sidebar.open { transform: none; }
  .overlay.show {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(10, 14, 22, .45);
    z-index: 50;
  }
  .content { padding: 16px 14px 60px; }
  .topbar { padding: 13px 14px; }
  .grid.stats { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
  .stat .value { font-size: 22px; }
  .toolbar .search { max-width: none; }
  .hide-sm { display: none; }
}

@media (max-width: 560px) {
  th, td { padding: 9px 10px; }
  .modal-foot { justify-content: stretch; }
  .modal-foot .btn { flex: 1; justify-content: center; }
}
