/* ═══════════════════════════════════════════════════════════════
   Fattura Elettronica — Design System
   CSS variables, tema chiaro/scuro, sidebar, componenti
   ═══════════════════════════════════════════════════════════════ */

:root {
  /* Palette */
  --c-primary: #0f766e;
  --c-primary-hover: #0d635c;
  --c-primary-soft: rgba(15, 118, 110, .12);
  --c-primary-contrast: #fff;

  --c-bg: #f4f6f9;
  --c-surface: #ffffff;
  --c-surface-alt: #f8fafc;
  --c-border: #e5e7eb;
  --c-border-strong: #d1d5db;

  --c-text: #1f2937;
  --c-text-soft: #4b5563;
  --c-text-muted: #6b7280;
  --c-text-faint: #9ca3af;

  --c-ok-bg: #d1fae5;      --c-ok-text: #065f46;
  --c-err-bg: #fee2e2;     --c-err-text: #991b1b;
  --c-warn-bg: #fef3c7;    --c-warn-text: #92400e;
  --c-info-bg: #e0e7ff;    --c-info-text: #3730a3;

  --c-code-bg: #0b1220;
  --c-code-text: #d1e7dd;

  /* Forma & ombre */
  --radius: 10px;
  --radius-sm: 8px;
  --shadow-1: 0 1px 3px rgba(0, 0, 0, .07);
  --shadow-2: 0 4px 14px rgba(0, 0, 0, .08);
  --shadow-3: 0 10px 30px rgba(0, 0, 0, .18);

  /* Layout */
  --sidebar-w: 250px;
  --topbar-h: 58px;

  --focus-ring: 0 0 0 3px var(--c-primary-soft);
}

[data-theme="dark"] {
  --c-primary: #2dd4bf;
  --c-primary-hover: #5eead4;
  --c-primary-soft: rgba(45, 212, 191, .16);
  --c-primary-contrast: #042f2e;

  --c-bg: #0f141a;
  --c-surface: #171e26;
  --c-surface-alt: #1d2630;
  --c-border: #2a3542;
  --c-border-strong: #3d4b5c;

  --c-text: #e5e7eb;
  --c-text-soft: #b7c0cb;
  --c-text-muted: #8b96a5;
  --c-text-faint: #64748b;

  --c-ok-bg: #123527;      --c-ok-text: #6ee7b7;
  --c-err-bg: #3d1a1a;     --c-err-text: #fca5a5;
  --c-warn-bg: #3a2b0a;    --c-warn-text: #fcd34d;
  --c-info-bg: #1e2650;    --c-info-text: #a5b4fc;

  --c-code-bg: #0a0f16;
  --c-code-text: #a7f3d0;

  --shadow-1: 0 1px 3px rgba(0, 0, 0, .4);
  --shadow-2: 0 4px 14px rgba(0, 0, 0, .45);
  --shadow-3: 0 10px 30px rgba(0, 0, 0, .6);
}

/* ── Base ─────────────────────────────────────────────────────── */
* { box-sizing: border-box; }

html { height: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--c-bg);
  margin: 0;
  color: var(--c-text);
  min-height: 100%;
  transition: background .2s, color .2s;
}

:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* ── Layout: sidebar + contenuto ─────────────────────────────── */
.layout {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  padding: 28px 32px 48px;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  flex: 1;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 32px;
  background: color-mix(in srgb, var(--c-surface) 85%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--c-border);
}

.page-title {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
}

.menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  color: var(--c-text-soft);
  padding: 7px 9px;
  cursor: pointer;
}

/* ── Sidebar ─────────────────────────────────────────────────── */
.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--sidebar-w);
  z-index: 50;
  display: flex;
  flex-direction: column;
  background: var(--c-surface);
  border-right: 1px solid var(--c-border);
  transition: transform .2s ease;
}

.sidebar-brand {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 18px 18px 16px;
  border-bottom: 1px solid var(--c-border);
}

.brand-logo {
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  color: var(--c-primary-contrast);
  background: linear-gradient(135deg, #0f766e, #059669);
  box-shadow: var(--shadow-1);
}

.brand-title { font-weight: 700; font-size: .98rem; }
.brand-sub {
  font-size: .68rem;
  color: var(--c-text-muted);
  letter-spacing: .02em;
  margin-top: 2px;
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-section {
  font-size: .68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--c-text-faint);
  padding: 14px 10px 6px;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  color: var(--c-text-soft);
  text-decoration: none;
  font-size: .9rem;
  font-weight: 500;
  transition: background .15s, color .15s;
}

.sidebar-nav a svg { flex-shrink: 0; opacity: .8; }
.sidebar-nav a:hover { background: var(--c-surface-alt); color: var(--c-text); }
.sidebar-nav a.active {
  background: var(--c-primary-soft);
  color: var(--c-primary);
  font-weight: 600;
}
.sidebar-nav a.active svg { opacity: 1; }
.nav-ext { margin-left: auto; font-size: .8rem; opacity: .6; }

.sidebar-footer {
  padding: 12px;
  border-top: 1px solid var(--c-border);
}

.theme-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--c-border);
  background: var(--c-surface-alt);
  color: var(--c-text-soft);
  font-size: .85rem;
  font-weight: 500;
  cursor: pointer;
  transition: background .15s;
}
.theme-toggle:hover { background: var(--c-primary-soft); color: var(--c-primary); }

/* icone tema */
[data-theme="light"] .icon-moon { display: none; }
[data-theme="dark"]  .icon-sun  { display: none; }
[data-theme="dark"]  .theme-toggle { background: var(--c-surface-alt); }

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 40;
  background: rgba(0, 0, 0, .45);
  opacity: 0;
  transition: opacity .2s;
}
.sidebar-overlay.visible { opacity: 1; }

/* ── Card ────────────────────────────────────────────────────── */
.card {
  background: var(--c-surface);
  border-radius: 14px;
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-1);
  border: 1px solid var(--c-border);
  transition: background .2s, border-color .2s;
}

.card h2 { margin-top: 0; font-size: 1.2rem; color: var(--c-text); }
.card h3 { color: var(--c-text); }

/* ── Form ────────────────────────────────────────────────────── */
fieldset {
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  margin-bottom: 20px;
  padding: 16px 20px;
}
fieldset legend { font-weight: 600; padding: 0 8px; font-size: .95rem; color: var(--c-text-soft); }
fieldset .legend-group-label { font-weight: 600; font-size: .9rem; color: var(--c-text-muted); margin: 12px 0 6px; display: block; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }

.label { display: block; margin-bottom: 4px; font-size: .8rem; font-weight: 500; color: var(--c-text-soft); }

input, select, textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--c-border-strong);
  border-radius: var(--radius-sm);
  font-size: .9rem;
  background: var(--c-surface);
  color: var(--c-text);
  transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: var(--focus-ring);
}
input::placeholder, textarea::placeholder { color: var(--c-text-faint); }
textarea { font-family: monospace; min-height: 120px; }
select { cursor: pointer; }

.row-line {
  border: 1px dashed var(--c-border-strong);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
  background: var(--c-surface-alt);
  position: relative;
}
.row-line h4 { margin: 0 0 12px; font-size: .9rem; color: var(--c-primary); }

/* ── Bottoni ─────────────────────────────────────────────────── */
.btn {
  background: var(--c-primary);
  color: var(--c-primary-contrast);
  border: none;
  padding: 11px 22px;
  border-radius: var(--radius-sm);
  font-size: .95rem;
  cursor: pointer;
  font-weight: 600;
  text-decoration: none;
  display: inline-block;
  transition: background .15s, transform .1s, box-shadow .15s;
  box-shadow: var(--shadow-1);
}
.btn:hover { background: var(--c-primary-hover); }
.btn:active { transform: translateY(1px); }

.btn-secondary {
  background: var(--c-surface);
  color: var(--c-text-soft);
  border: 1px solid var(--c-border-strong);
  box-shadow: none;
}
.btn-secondary:hover { background: var(--c-surface-alt); color: var(--c-text); }

.btn-remove {
  background: #dc2626;
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 6px 12px;
  cursor: pointer;
}
.btn-remove:hover { background: #b91c1c; }

[data-theme="dark"] .btn-remove { background: #7f1d1d; }
[data-theme="dark"] .btn-remove:hover { background: #991b1b; }

.btn-sm { padding: 7px 13px; font-size: .85rem; }
.btn-row { display: flex; gap: 8px; margin-top: 12px; align-items: center; flex-wrap: wrap; }

/* ── Risultati / codice ──────────────────────────────────────── */
.result { margin-top: 20px; }
.result .code-box {
  background: var(--c-code-bg);
  color: var(--c-code-text);
  padding: 16px;
  border-radius: var(--radius);
  overflow-x: auto;
  max-height: 400px;
  font-family: monospace;
  font-size: .8rem;
  white-space: pre-wrap;
  word-break: break-all;
  border: 1px solid var(--c-border);
}

.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: .8rem;
  font-weight: 600;
}
.badge-ok   { background: var(--c-ok-bg);   color: var(--c-ok-text); }
.badge-err  { background: var(--c-err-bg);  color: var(--c-err-text); }
.badge-info { background: var(--c-info-bg); color: var(--c-info-text); }

/* ── Toast (ex flash) ────────────────────────────────────────── */
.toast-container {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 380px;
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 13px 15px;
  border-radius: var(--radius);
  font-size: .9rem;
  box-shadow: var(--shadow-3);
  opacity: 0;
  transform: translateX(30px);
  transition: opacity .3s, transform .3s;
  border: 1px solid transparent;
}
.toast-show { opacity: 1; transform: translateX(0); }
.toast-ok  { background: var(--c-ok-bg);  color: var(--c-ok-text);  border-color: color-mix(in srgb, var(--c-ok-text) 25%, transparent); }
.toast-err { background: var(--c-err-bg); color: var(--c-err-text); border-color: color-mix(in srgb, var(--c-err-text) 25%, transparent); }

.toast-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: .7rem;
  font-weight: 800;
  background: color-mix(in srgb, currentColor 18%, transparent);
}
.toast-msg { flex: 1; word-break: break-word; }
.toast-close {
  flex-shrink: 0;
  background: none;
  border: none;
  color: inherit;
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  opacity: .6;
  padding: 0 2px;
}
.toast-close:hover { opacity: 1; }

/* ── Modale di conferma ──────────────────────────────────────── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(0, 0, 0, .5);
  opacity: 0;
  transition: opacity .2s;
}
.modal-backdrop.visible { opacity: 1; }

.modal {
  width: 100%;
  max-width: 420px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 14px;
  padding: 26px;
  box-shadow: var(--shadow-3);
  text-align: center;
  transform: scale(.95);
  transition: transform .2s;
}
.modal-backdrop.visible .modal { transform: scale(1); }

.modal-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 14px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-size: 1.4rem;
  background: var(--c-err-bg);
  color: var(--c-err-text);
}
.modal h3 { margin: 0 0 8px; }
.modal-msg { color: var(--c-text-muted); font-size: .92rem; margin: 0 0 22px; }
.modal-actions { display: flex; gap: 10px; justify-content: center; }
.modal-actions .btn { min-width: 120px; }

/* ── Tabelle ─────────────────────────────────────────────────── */
table { width: 100%; border-collapse: collapse; background: transparent; }
th {
  text-align: left;
  padding: 12px 14px;
  background: var(--c-surface-alt);
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--c-text-muted);
  border-bottom: 2px solid var(--c-border);
}
td { padding: 12px 14px; border-bottom: 1px solid var(--c-border); font-size: .9rem; color: var(--c-text-soft); }
tbody tr { transition: background .1s; }
tr:hover td { background: var(--c-surface-alt); }
.table-wrap { overflow-x: auto; border-radius: var(--radius-sm); }
.table-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.filters { display: flex; gap: 8px; flex-wrap: wrap; }
.filters select, .filters button { width: auto; }
.cell-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.cell-actions form { margin: 0; }
.cell-actions button { width: auto; }

.empty { color: var(--c-text-faint); font-style: italic; padding: 20px 0; }
.empty a { color: var(--c-primary); font-weight: 600; }
.tag-inline { color: var(--c-text-muted); font-size: .75rem; }

/* ── Stati, errori, timeline ─────────────────────────────────── */
.errori-box {
  margin-top: 12px;
  padding: 12px;
  background: var(--c-warn-bg);
  border: 1px solid color-mix(in srgb, var(--c-warn-text) 40%, transparent);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--c-warn-text);
}
.errori-box ul { margin: 8px 0 0 0; padding-left: 18px; }

.badge-stato {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}
.badge-stato.bozza              { background: var(--c-border);        color: var(--c-text-soft); }
.badge-stato.generata           { background: var(--c-info-bg);       color: var(--c-info-text); }
.badge-stato.trasmessa          { background: var(--c-warn-bg);       color: var(--c-warn-text); }
.badge-stato.consegnata         { background: var(--c-ok-bg);         color: var(--c-ok-text); }
.badge-stato.scartata,
.badge-stato.mancata_consegna   { background: var(--c-err-bg);        color: var(--c-err-text); }
.badge-stato.annullata          { background: color-mix(in srgb, #a855f7 20%, transparent); color: #a855f7; }
.badge-stato.decorrenza_termini { background: color-mix(in srgb, #06b6d4 18%, transparent); color: #06b6d4; }

.timeline { list-style: none; margin: 12px 0 0 0; padding: 0; }
.timeline li {
  padding: 6px 0 6px 22px;
  border-left: 2px solid var(--c-border-strong);
  margin-left: 8px;
  position: relative;
  font-size: 14px;
}
.timeline li::before {
  content: "●";
  position: absolute;
  left: -8px;
  color: var(--c-primary);
  font-size: 10px;
  top: 8px;
}

.upload-zone {
  border: 2px dashed var(--c-border-strong);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
  background: var(--c-surface-alt);
  transition: border-color .15s, background .15s;
}
.upload-zone:hover { border-color: var(--c-primary); }

/* ── Stat boxes ──────────────────────────────────────────────── */
.stat-box {
  background: var(--c-surface-alt);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}
.stat-label {
  font-size: .75rem;
  color: var(--c-text-muted);
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 4px;
}
.stat-value { font-size: 1.1rem; font-weight: 700; color: var(--c-text); }

/* ── Dropdown selezione anagrafica ───────────────────────────── */
.select-anagrafica {
  background: var(--c-ok-bg);
  border: 2px solid color-mix(in srgb, var(--c-ok-text) 45%, transparent);
  font-weight: 600;
  cursor: pointer;
}
.select-anagrafica:focus {
  border-color: var(--c-ok-text);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--c-ok-text) 20%, transparent);
}

/* ── Accordion (form FatturaPA) ─────────────────────────────── */
.accordion { margin-bottom: 8px; }
.accordion-item {
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  margin-bottom: 6px;
  overflow: hidden;
  background: var(--c-surface);
  transition: border-color .15s;
}
.accordion-item.open { border-color: color-mix(in srgb, var(--c-primary) 35%, var(--c-border)); }
.accordion-header {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 12px 16px;
  background: var(--c-surface-alt);
  border: none;
  cursor: pointer;
  font-size: .9rem;
  text-align: left;
  color: var(--c-text);
  font-family: inherit;
  transition: background .15s;
}
.accordion-header:hover { background: var(--c-primary-soft); }
.accordion-icon { font-size: .7rem; color: var(--c-text-muted); transition: transform .2s; flex-shrink: 0; }
.accordion-item.open .accordion-icon { transform: rotate(90deg); }
.accordion-title { font-weight: 600; color: var(--c-primary); font-family: monospace; font-size: .85rem; }
.accordion-desc { color: var(--c-text-muted); font-size: .8rem; font-weight: 400; }
.accordion-body { display: none; padding: 16px; border-top: 1px solid var(--c-border); background: var(--c-surface); }
.accordion-item.open .accordion-body { display: block; }
.sub-section { margin-top: 16px; padding-top: 12px; border-top: 1px dashed var(--c-border-strong); }
.sub-section h4 { margin: 0 0 8px; font-size: .85rem; color: var(--c-text-soft); font-weight: 600; }

/* ── Barra bozza (autosave) ─────────────────────────────────── */
.draft-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 10px 14px;
  margin-bottom: 16px;
  border-radius: var(--radius);
  font-size: .85rem;
  background: var(--c-info-bg);
  color: var(--c-info-text);
  border: 1px solid color-mix(in srgb, var(--c-info-text) 25%, transparent);
}
.draft-bar .btn-sm { margin-left: auto; }

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 900px) {
  .layout { margin-left: 0; }
  .menu-btn { display: inline-flex; }
  main { padding: 20px 16px 40px; }

  .sidebar { transform: translateX(-100%); box-shadow: var(--shadow-3); }
  .sidebar.open { transform: translateX(0); }
  .sidebar-overlay.visible { display: block; }

  .topbar { padding: 0 16px; }
  .table-header { flex-direction: column; align-items: stretch; }
}