:root {
  --bg: #0f1720;
  --bg-card: #182432;
  --bg-card-hover: #1e2d3f;
  --border: #2a3a4d;
  --text: #e8edf2;
  --text-muted: #8ea0b3;
  --accent: #4f9dde;
  --accent-hover: #6bb0ea;
  --ok: #3fb87f;
  --warn: #e0a64f;
  --danger: #e05f5f;
  --radius: 10px;
}

* { 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);
  line-height: 1.5;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 16px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  font-weight: 700;
  font-size: 18px;
  color: var(--accent);
  text-decoration: none;
}

.topbar-right { display: flex; align-items: center; gap: 18px; }

.settings-link, .logout {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
}
.settings-link:hover, .logout:hover { color: var(--text); }

h1 { font-size: 22px; margin: 0 0 12px 0; }
h2 { font-size: 16px; margin: 0 0 12px 0; color: var(--text-muted); font-weight: 600; }

.page-head {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.page-head h1 { margin: 0; flex: 1; }

.back-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
}
.back-link:hover { color: var(--text); }

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 16px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
}

.client-card {
  text-decoration: none;
  color: var(--text);
  display: block;
  transition: background 0.15s;
}
.client-card:hover { background: var(--bg-card-hover); }

.client-card-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
}
.client-card-head h3 { margin: 0; font-size: 17px; }

.badge {
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
}

.note { color: var(--text-muted); font-size: 13px; margin: 6px 0; }

.client-stats {
  display: flex;
  justify-content: space-between;
  margin-top: 12px;
  gap: 8px;
  flex-wrap: wrap;
}
.client-stats > div { display: flex; flex-direction: column; }

.stat-label { font-size: 11px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.03em; }
.stat-value { font-size: 15px; font-weight: 600; }
.amount-due { color: var(--warn); }

.summary-bar {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 16px;
}
.summary-bar > div { display: flex; flex-direction: column; min-width: 100px; }

.form-inline {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}
.form-inline input { flex: 1; min-width: 140px; }

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.field { display: flex; flex-direction: column; gap: 4px; }
.field label { font-size: 12px; color: var(--text-muted); }
.field-wide { grid-column: 1 / -1; }
.field-checkbox { flex-direction: row; align-items: center; gap: 8px; }
.field-checkbox label { display: flex; align-items: center; gap: 6px; font-size: 14px; color: var(--text); }
.field-submit { grid-column: 1 / -1; }

input[type="text"], input[type="date"], input[type="number"], input[type="password"] {
  background: #0d1620;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  color: var(--text);
  font-size: 14px;
  width: 100%;
}
input:focus { outline: none; border-color: var(--accent); }

.btn {
  display: inline-block;
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
}
.btn-primary { background: var(--accent); color: #08131f; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary { background: var(--bg-card-hover); color: var(--text); border: 1px solid var(--border); }
.btn-danger { background: transparent; color: var(--danger); border: 1px solid var(--danger); }
.btn-danger:hover { background: rgba(224,95,95,0.1); }
.btn-block { width: 100%; }
.btn-small { padding: 6px 10px; font-size: 12px; }

.empty { color: var(--text-muted); font-size: 14px; padding: 20px 0; text-align: center; }

.section-title { margin-top: 4px; }

.todo-list { display: flex; flex-direction: column; gap: 8px; }
.todo-row {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--text-muted);
  border-radius: var(--radius);
  padding: 10px 12px;
}
.todo-row.priority-alta { border-left-color: var(--danger); }
.todo-row.priority-media { border-left-color: var(--warn); }
.todo-row.priority-bassa { border-left-color: var(--accent); }
.todo-row.is-done { border-left-color: var(--ok); opacity: 0.75; }

.todo-check {
  width: 20px;
  height: 20px;
  min-width: 20px;
  border-radius: 50%;
  border: 2px solid var(--border);
  background: transparent;
  cursor: pointer;
  padding: 0;
}
.todo-check:hover { border-color: var(--ok); background: rgba(63,184,127,0.15); }

.todo-main { flex: 1; min-width: 0; }
.todo-desc { font-size: 14px; }
.todo-meta { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.todo-meta a { color: var(--text-muted); }
.todo-meta a:hover { color: var(--accent); }

select {
  background: #0d1620;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  color: var(--text);
  font-size: 14px;
  width: 100%;
}

.todo-session-form, .todo-billing-form {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 8px;
}
.todo-session-form input, .todo-billing-form input {
  width: auto;
  max-width: 110px;
  padding: 6px 8px;
  font-size: 12px;
}
.todo-billing-form { border-top: 1px dashed var(--border); padding-top: 8px; }

.activity-list { display: flex; flex-direction: column; gap: 10px; }

.activity-row {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--warn);
  border-radius: var(--radius);
  padding: 12px 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
}
.activity-row.is-paid { border-left-color: var(--ok); }
.activity-row.is-partial { border-left-color: var(--accent); }
.activity-row { flex-wrap: wrap; }

.hint-static { color: var(--text-muted); font-size: 13px; margin: 0 0 12px 0; }

.inline-payment-form {
  width: 100%;
  display: flex;
  gap: 8px;
  align-items: center;
  border-top: 1px solid var(--border);
  padding-top: 10px;
  margin-top: 4px;
}
.inline-payment-form input { max-width: 160px; }

.settings-client-list { display: flex; flex-direction: column; gap: 8px; }
.settings-client-row {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
  background: #0d1620;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
}
.settings-client-row input[type="text"]:first-of-type { max-width: 200px; }
.settings-client-row input[type="text"] { flex: 1; min-width: 120px; }

.changelog-list { display: flex; flex-direction: column; gap: 16px; }
.changelog-entry { border-left: 2px solid var(--border); padding-left: 14px; }
.changelog-head { display: flex; gap: 10px; align-items: baseline; margin-bottom: 6px; }
.changelog-version { font-weight: 700; color: var(--accent); font-size: 14px; }
.changelog-date { font-size: 12px; color: var(--text-muted); }
.changelog-items { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 4px; }
.changelog-items li { font-size: 13px; }
.tag {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  border-radius: 4px;
  padding: 1px 6px;
  margin-right: 6px;
}
.tag-new { background: rgba(79,157,222,0.2); color: var(--accent); }
.tag-fix { background: rgba(224,166,79,0.2); color: var(--warn); }
.tag-perf { background: rgba(63,184,127,0.2); color: var(--ok); }

.activity-main { flex: 1 1 220px; min-width: 0; }
.activity-date { font-size: 12px; color: var(--text-muted); }
.activity-desc { font-size: 15px; }
.activity-note { font-size: 12px; color: var(--text-muted); margin-top: 2px; }

.activity-meta { display: flex; gap: 6px; flex-wrap: wrap; }
.chip {
  background: #0d1620;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px 10px;
  font-size: 12px;
  white-space: nowrap;
}
.chip-ok { color: var(--ok); border-color: var(--ok); }
.chip-warn { color: var(--warn); border-color: var(--warn); }

.activity-actions { display: flex; align-items: center; gap: 12px; }
.inline-form { display: inline-flex; align-items: center; margin: 0; }
.pay-toggle { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-muted); cursor: pointer; }

.login-box {
  max-width: 340px;
  margin: 80px auto 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
}
.login-box h1 { color: var(--accent); }
.subtitle { color: var(--text-muted); font-size: 13px; margin-bottom: 20px; }
.login-box form { display: flex; flex-direction: column; gap: 14px; text-align: left; }

.flash {
  padding: 10px 14px;
  border-radius: 8px;
  margin-bottom: 14px;
  font-size: 14px;
}
.flash-error { background: rgba(224,95,95,0.15); color: var(--danger); border: 1px solid var(--danger); }
.flash-ok { background: rgba(63,184,127,0.15); color: var(--ok); border: 1px solid var(--ok); }

.report-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.report-textarea {
  width: 100%;
  min-height: 260px;
  background: #0d1620;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: "SF Mono", Consolas, monospace;
  font-size: 13px;
  padding: 12px;
  resize: vertical;
}
.hint { font-size: 12px; color: var(--ok); min-height: 16px; margin: 8px 0 0 0; }

/* Mobile */
@media (max-width: 560px) {
  .container { padding: 12px; }
  .form-grid { grid-template-columns: 1fr; }
  .summary-bar { gap: 12px; }
  .activity-row { flex-direction: column; align-items: flex-start; }
  .activity-actions { width: 100%; justify-content: space-between; }
  .page-head { flex-direction: row; }
}