:root {
  --bg: #f6f7f9;
  --card-bg: #ffffff;
  --text: #1b1f24;
  --muted: #5a6472;
  --border: #e3e6ea;
  --accent: #2f6fed;
  --red: #d1373f;
  --red-bg: #fdeceb;
  --amber: #b7791f;
  --amber-bg: #fdf3e0;
  --green: #1f7a3d;
  --green-bg: #e8f6ec;
  --grey-bg: #edeef0;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  padding: 16px;
  max-width: 720px;
  margin: 0 auto;
}

.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.login-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px 24px;
  width: 100%;
  max-width: 360px;
}

.login-card h1 { font-size: 20px; margin: 0 0 4px; }

.subtitle { color: var(--muted); font-size: 14px; margin: 0 0 16px; }

form label { display: block; font-size: 13px; color: var(--muted); margin: 12px 0 4px; }

input, select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  background: #fff;
}

button {
  cursor: pointer;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 16px;
  min-height: 44px;
}

button[type="submit"] {
  background: var(--accent);
  color: #fff;
  width: 100%;
  margin-top: 16px;
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
}

.page-header h1 { font-size: 20px; margin: 0 0 4px; }

.logout-form { display: flex; align-items: center; gap: 8px; white-space: nowrap; }

.signed-in-as { font-size: 13px; color: var(--muted); }

.link-button {
  background: none;
  color: var(--accent);
  padding: 4px;
  min-height: auto;
  font-weight: 500;
  font-size: 13px;
}

.banner {
  padding: 12px 14px;
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 14px;
}

.banner-error { background: var(--red-bg); color: var(--red); border: 1px solid var(--red); }

.summary-strip {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 12px;
}

.summary-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
}

.summary-label { font-size: 13px; color: var(--muted); font-weight: 600; }
.summary-value { font-size: 22px; font-weight: 700; margin: 4px 0; }
.summary-hint { font-size: 12px; color: var(--muted); line-height: 1.4; }

.board-meta {
  font-size: 13px;
  color: var(--muted);
  margin: 8px 0 16px;
}

.overdue-marker { color: var(--red); font-weight: 700; }

.row-list { display: flex; flex-direction: column; gap: 10px; margin-bottom: 24px; }

.row-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-left: 4px solid var(--border);
  border-radius: 10px;
  padding: 14px;
}

.row-card.row-overdue { border-left-color: var(--red); background: var(--red-bg); }

.row-main {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.row-client { font-weight: 700; font-size: 15px; flex: 1 1 auto; min-width: 0; word-break: break-word; }
.row-period { font-size: 13px; color: var(--muted); }
.row-fee { font-weight: 700; font-size: 15px; }

.row-stage-pill {
  font-size: 12px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.stage-due { background: var(--amber-bg); color: var(--amber); }
.stage-sent { background: #e6eefc; color: var(--accent); }
.stage-invoiced { background: var(--amber-bg); color: var(--amber); }
.stage-paid { background: var(--green-bg); color: var(--green); }

.overdue-badge {
  background: var(--red);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 999px;
  text-transform: uppercase;
}

.row-due-label { font-size: 13px; color: var(--muted); margin-bottom: 10px; }

.row-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.row-actions form { margin: 0; }

.btn-advance {
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  padding: 10px 14px;
}

.btn-undo {
  background: var(--grey-bg);
  color: var(--text);
  font-size: 13px;
  padding: 10px 14px;
}

.empty-state {
  background: var(--card-bg);
  border: 1px dashed var(--border);
  border-radius: 12px;
  padding: 32px 16px;
  text-align: center;
  margin-bottom: 24px;
}

.empty-state h2 { margin: 0 0 6px; font-size: 16px; }
.empty-state p { margin: 0; color: var(--muted); font-size: 14px; }

.add-client {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 24px;
}

.add-client h2 { font-size: 15px; margin: 0 0 4px; }

.add-form button[type="submit"] { max-width: 220px; }

.page-footer {
  font-size: 12px;
  color: var(--muted);
  text-align: center;
  padding: 16px 0 32px;
}

@media (max-width: 420px) {
  .summary-strip { grid-template-columns: 1fr; }
}