:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-alt: #fbfbfc;
  --border: #e5e7eb;
  --text: #14171f;
  --text-muted: #6b7280;
  --text-faint: #9ca3af;

  --primary: #2f5fe0;
  --primary-dark: #2347b3;
  --primary-tint: #eaefff;

  --ok: #0f9d58;
  --ok-tint: #e5f7ed;
  --danger: #d1362f;
  --danger-tint: #fdecea;
  --warn: #b5760a;
  --warn-tint: #fef3e0;

  --radius: 10px;
  --shadow-sm: 0 1px 2px rgba(20, 23, 31, 0.05);
  --shadow-md: 0 4px 16px rgba(20, 23, 31, 0.08);

  --sidebar-w: 220px;
}

* { box-sizing: border-box; }

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

a { color: inherit; }

/* ---------- App shell ---------- */

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

.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 20px 0;
  position: sticky;
  top: 0;
  height: 100vh;
}

.sidebar .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 20px 20px;
  font-weight: 700;
  font-size: 1.02rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 12px;
}

.sidebar .brand .logo {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 15px;
}

.sidebar nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 0 12px;
  flex: 1;
}

.sidebar nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 8px;
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.9rem;
}

.sidebar nav a .ic { width: 18px; text-align: center; opacity: 0.85; }

.sidebar nav a:hover { background: var(--surface-alt); color: var(--text); }

.sidebar nav a.active {
  background: var(--primary-tint);
  color: var(--primary-dark);
}

.sidebar .logout {
  padding: 0 12px;
  margin-top: 8px;
}

.sidebar .logout a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 8px;
  text-decoration: none;
  color: var(--text-faint);
  font-size: 0.88rem;
}
.sidebar .logout a:hover { background: var(--surface-alt); color: var(--danger); }

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

.topheader {
  padding: 20px 32px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.topheader h1 { margin: 0; font-size: 1.25rem; font-weight: 700; }
.topheader p { margin: 4px 0 0; color: var(--text-muted); font-size: 0.88rem; }

.content { padding: 28px 32px; max-width: 1100px; }

/* ---------- Cards ---------- */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  margin-bottom: 22px;
  box-shadow: var(--shadow-sm);
}

.card h2 {
  font-size: 0.98rem;
  margin: 0 0 16px;
  font-weight: 700;
}

.card .card-subtitle {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin: -12px 0 16px;
}

/* ---------- KPI row ---------- */

.kpi-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 22px;
}

.kpi {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
}

.kpi .kpi-label {
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 8px;
}

.kpi .kpi-value {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.2;
}

.kpi .kpi-value.danger { color: var(--danger); }
.kpi .kpi-value.warn { color: var(--warn); }
.kpi .kpi-value.ok { color: var(--ok); }

.kpi .kpi-hint { color: var(--text-faint); font-size: 0.78rem; margin-top: 4px; }

/* ---------- Tables ---------- */

table { width: 100%; border-collapse: collapse; }

th {
  text-align: left;
  padding: 10px 12px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--text-faint);
  border-bottom: 1px solid var(--border);
}

td {
  padding: 13px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
  vertical-align: middle;
}

tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--surface-alt); }

td.amount { font-weight: 700; font-variant-numeric: tabular-nums; }
td.muted, .muted { color: var(--text-muted); }
td.overdue { color: var(--danger); font-weight: 700; }

/* ---------- Status pills ---------- */

.pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 700;
  white-space: nowrap;
}

.pill::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.pill.pagata { background: var(--ok-tint); color: var(--ok); }
.pill.non_pagata { background: var(--danger-tint); color: var(--danger); }
.pill.review { background: var(--warn-tint); color: var(--warn); }
.pill.scaduta { background: var(--danger); color: white; }
.pill.scaduta::before { background: white; }

.status-cell { display: flex; flex-direction: column; align-items: flex-start; gap: 4px; }
.status-cell .hint { font-size: 0.76rem; color: var(--text-faint); }

/* ---------- Filter tabs ---------- */

.tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--border);
}

.tabs a {
  padding: 9px 14px;
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.88rem;
  font-weight: 600;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}

.tabs a.active { color: var(--primary); border-bottom-color: var(--primary); }
.tabs a .count { color: var(--text-faint); font-weight: 500; }
.tabs a.active .count { color: var(--primary); }

/* ---------- Forms & buttons ---------- */

label { display: block; font-size: 0.82rem; font-weight: 600; color: var(--text-muted); margin-bottom: 6px; }

input[type=text], input[type=password], input[type=date] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin: 0 0 16px;
  font-size: 0.92rem;
  background: var(--surface-alt);
}
input:focus { outline: 2px solid var(--primary-tint); border-color: var(--primary); background: var(--surface); }

button, .btn {
  background: var(--primary);
  color: white;
  border: none;
  padding: 9px 16px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.87rem;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
button:hover, .btn:hover { background: var(--primary-dark); }

button.secondary, .btn.secondary { background: var(--surface-alt); color: var(--text); border: 1px solid var(--border); }
button.secondary:hover, .btn.secondary:hover { background: var(--border); }

.inline-form { display: inline; }

.form-row { display: flex; gap: 12px; align-items: flex-end; }
.form-row > div { flex: 1; }
.form-row button { height: 41px; margin-bottom: 16px; }

.error {
  background: var(--danger-tint);
  color: var(--danger);
  padding: 10px 14px;
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 0.88rem;
  font-weight: 600;
}

.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-faint);
  font-size: 0.9rem;
}

/* ---------- Login ---------- */

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, #f6f7f9 0%, #eef1fb 100%);
}

.login-card {
  width: 100%;
  max-width: 360px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 32px;
  box-shadow: var(--shadow-md);
}

.login-card .logo {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 22px;
  margin: 0 auto 18px;
}

.login-card h1 { text-align: center; font-size: 1.15rem; margin: 0 0 24px; }
.login-card button { width: 100%; justify-content: center; padding: 11px; margin-top: 4px; }

/* ---------- Settings status ---------- */

.status-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 8px;
  background: var(--surface-alt);
  margin-bottom: 16px;
  font-size: 0.9rem;
}

.dot { width: 9px; height: 9px; border-radius: 50%; flex-shrink: 0; }
.dot.on { background: var(--ok); box-shadow: 0 0 0 3px var(--ok-tint); }
.dot.off { background: var(--danger); box-shadow: 0 0 0 3px var(--danger-tint); }

/* ---------- Calendar ---------- */

#calendar { max-width: 100%; }
.fc-event { cursor: default; border: none !important; }
.fc-daygrid-event { border-radius: 5px; padding: 1px 4px; }
.fc .fc-toolbar-title { font-size: 1.05rem; font-weight: 700; }
.fc-theme-standard td, .fc-theme-standard th { border-color: var(--border); }
.legend { display: flex; gap: 18px; margin-top: 16px; font-size: 0.82rem; color: var(--text-muted); }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend .sw { width: 9px; height: 9px; border-radius: 50%; }