:root {
  --navy: #1a2e4e;
  --navy-dark: #0f1c30;
  --turchese: #2e9e8c;
  --turchese-dark: #237a6c;
  --accento2: #4a7a8c;
  --grigio-chiaro: #f4f6f8;
  --grigio-medio: #b9c2cc;
  --testo: #1f2a37;
  --bianco: #ffffff;
  --rosso: #c0392b;
  --verde: #1e8449;
  --ombra: 0 2px 10px rgba(26, 46, 78, 0.08);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background: var(--grigio-chiaro);
  color: var(--testo);
}

a { text-decoration: none; color: inherit; }

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

.sidebar {
  width: 240px;
  background: var(--navy);
  color: var(--bianco);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  position: fixed;
  top: 0; bottom: 0; left: 0;
}

.sidebar .logo-box {
  padding: 24px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  text-align: center;
}
.sidebar .logo-box img { max-width: 140px; }

.sidebar nav {
  flex: 1;
  padding: 16px 0;
  overflow-y: auto;
}

.sidebar nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 22px;
  font-size: 14.5px;
  color: rgba(255,255,255,0.8);
  border-left: 3px solid transparent;
  transition: all 0.15s ease;
}
.sidebar nav a:hover {
  background: rgba(255,255,255,0.06);
  color: var(--bianco);
}
.sidebar nav a.active {
  background: rgba(46,158,140,0.15);
  border-left-color: var(--turchese);
  color: var(--bianco);
  font-weight: 600;
}

.sidebar .footer-box {
  padding: 16px 20px;
  font-size: 11px;
  color: rgba(255,255,255,0.45);
  border-top: 1px solid rgba(255,255,255,0.1);
}

.main-content {
  margin-left: 240px;
  flex: 1;
  padding: 28px 36px;
  width: calc(100% - 240px);
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
}

.topbar h1 {
  font-size: 22px;
  color: var(--navy);
  margin: 0;
  font-weight: 700;
}

.topbar .user-box {
  font-size: 13px;
  color: var(--accento2);
  display: flex;
  align-items: center;
  gap: 14px;
}
.topbar .user-box a.logout {
  color: var(--rosso);
  font-weight: 600;
}

/* ---------- CARDS / KPI ---------- */
.kpi-row {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.kpi-card {
  background: var(--bianco);
  border-radius: 10px;
  box-shadow: var(--ombra);
  padding: 20px 24px;
  flex: 1;
  min-width: 200px;
  border-top: 4px solid var(--turchese);
}
.kpi-card .kpi-value {
  font-size: 26px;
  font-weight: 700;
  color: var(--navy);
}
.kpi-card .kpi-value.positive { color: var(--verde); }
.kpi-card .kpi-value.negative { color: var(--rosso); }
.kpi-card .kpi-label {
  font-size: 12.5px;
  color: #6b7684;
  margin-top: 4px;
}

.panel {
  background: var(--bianco);
  border-radius: 10px;
  box-shadow: var(--ombra);
  padding: 22px 26px;
  margin-bottom: 26px;
}
.panel h2 {
  font-size: 16px;
  color: var(--navy);
  margin-top: 0;
  margin-bottom: 16px;
  border-bottom: 2px solid var(--grigio-chiaro);
  padding-bottom: 10px;
}

/* ---------- TABLES ---------- */
table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}
table.data-table th {
  text-align: left;
  background: var(--grigio-chiaro);
  color: var(--navy);
  padding: 10px 12px;
  font-weight: 600;
  position: sticky;
  top: 0;
}
table.data-table td {
  padding: 9px 12px;
  border-bottom: 1px solid #eef1f4;
}
table.data-table tr:hover td { background: #f9fbfc; }
table.data-table td.num { text-align: right; font-variant-numeric: tabular-nums; }
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 11.5px;
  font-weight: 600;
  background: var(--grigio-chiaro);
  color: var(--accento2);
}
.badge.uncategorized {
  background: #fde8e8;
  color: var(--rosso);
}
.badge.categorized {
  background: #e6f4f1;
  color: var(--turchese-dark);
}

select.cat-select, input.cat-input {
  padding: 5px 8px;
  border: 1px solid var(--grigio-medio);
  border-radius: 6px;
  font-size: 12.5px;
}

.btn {
  display: inline-block;
  padding: 8px 18px;
  border-radius: 6px;
  background: var(--turchese);
  color: var(--bianco);
  border: none;
  font-weight: 600;
  cursor: pointer;
  font-size: 13.5px;
}
.btn:hover { background: var(--turchese-dark); }
.btn.secondary {
  background: var(--bianco);
  color: var(--navy);
  border: 1px solid var(--grigio-medio);
}

/* ---------- LOGIN ---------- */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-dark) 100%);
}
.login-box {
  background: var(--bianco);
  border-radius: 14px;
  padding: 44px 40px;
  width: 380px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.25);
  text-align: center;
}
.login-box img { max-width: 160px; margin-bottom: 20px; }
.login-box h2 { color: var(--navy); margin-bottom: 6px; }
.login-box p.subtitle { color: #8a95a3; font-size: 13px; margin-bottom: 24px; }
.login-box input {
  width: 100%;
  padding: 11px 14px;
  margin-bottom: 14px;
  border-radius: 7px;
  border: 1px solid var(--grigio-medio);
  font-size: 14px;
}
.login-box .btn { width: 100%; padding: 11px; font-size: 14.5px; }
.login-box .error {
  background: #fde8e8;
  color: var(--rosso);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 12.5px;
  margin-bottom: 14px;
}
.login-box .confidential-note {
  margin-top: 22px;
  font-size: 10.5px;
  color: #a3adb8;
  line-height: 1.4;
}

/* ---------- UPLOAD ---------- */
.upload-zone {
  border: 2px dashed var(--grigio-medio);
  border-radius: 10px;
  padding: 40px;
  text-align: center;
  color: #8a95a3;
  margin-bottom: 18px;
}

.chart-container { position: relative; height: 340px; }

.section-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 20px;
}

.tag-external {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  border-radius: 8px;
  background: var(--grigio-chiaro);
  margin-bottom: 10px;
}
.tag-external .dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--turchese);
}