:root {
  --fw-bg-page: #f0fdf4;
  --fw-bg-top: #ecfdf5;
  --fw-bg-mid: #d1fae5;
  --fw-green-900: #14532d;
  --fw-green-700: #15803d;
  --fw-green-600: #16a34a;
  --fw-green-500: #22c55e;
  --fw-surface: #ffffff;
  --fw-surface-muted: #ecfdf5;
  --fw-text: #1f2937;
  --fw-text-muted: #475569;
  --fw-border: rgba(20, 83, 45, 0.12);
  --fw-border-strong: rgba(20, 83, 45, 0.22);
  --fw-primary: var(--fw-green-600);
  --fw-primary-hover: #15803d;
  --fw-link: var(--fw-green-700);
  --fw-focus-ring: #86efac;
  --fw-shadow: rgba(20, 83, 45, 0.12);
  --fw-error: #c0392b;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, sans-serif;
  background: radial-gradient(120% 80% at 50% 0%, var(--fw-bg-top) 0%, var(--fw-bg-mid) 35%, var(--fw-bg-page) 100%);
  color: var(--fw-text);
  min-height: 100dvh;
  padding-bottom: calc(4.5rem + var(--safe-bottom));
}

.app-header {
  background: linear-gradient(135deg, var(--fw-green-700), var(--fw-green-600));
  color: #fff;
  padding: 1rem 1rem 0.75rem;
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: 0 2px 12px var(--fw-shadow);
}

.app-header h1 { margin: 0; font-size: 1.25rem; font-weight: 700; }
.app-header p { margin: 0.25rem 0 0; font-size: 0.85rem; opacity: 0.92; }

.app-main { padding: 1rem; max-width: 32rem; margin: 0 auto; }

.panel {
  background: var(--fw-surface);
  border: 1px solid var(--fw-border);
  border-radius: 12px;
  padding: 1rem;
  box-shadow: 0 4px 16px var(--fw-shadow);
}

.panel h2 { margin: 0 0 0.75rem; font-size: 1.1rem; }

.field { margin-bottom: 0.75rem; }
.field label { display: block; font-size: 0.85rem; color: var(--fw-text-muted); margin-bottom: 0.25rem; }
.field input, .field textarea, .field select {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--fw-border-strong);
  border-radius: 8px;
  font-size: 1rem;
  background: #fff;
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: 2px solid var(--fw-focus-ring);
  border-color: var(--fw-link);
}

.btn-row { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.75rem; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1rem;
  border-radius: 8px;
  border: none;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  min-height: 44px;
}
.btn.primary { background: var(--fw-primary); color: #fff; }
.btn.primary:active { background: var(--fw-primary-hover); }
.btn.secondary { background: var(--fw-surface-muted); color: var(--fw-text); border: 1px solid var(--fw-border-strong); }
.btn.ghost { background: transparent; color: var(--fw-link); border: 1px solid var(--fw-border); }
.btn.danger { background: #fdecea; color: var(--fw-error); border: 1px solid #f5c6cb; }
.btn.small { padding: 0.4rem 0.65rem; font-size: 0.85rem; min-height: 36px; }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }

.bottom-nav {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  display: flex;
  background: var(--fw-surface);
  border-top: 1px solid var(--fw-border);
  padding-bottom: var(--safe-bottom);
  z-index: 20;
}
.bottom-nav button {
  flex: 1;
  border: none;
  background: transparent;
  padding: 0.6rem 0.25rem;
  font-size: 0.75rem;
  color: var(--fw-text-muted);
  min-height: 56px;
}
.bottom-nav button.active { color: var(--fw-green-700); font-weight: 700; }

.card {
  background: var(--fw-surface);
  border: 1px solid var(--fw-border);
  border-radius: 10px;
  padding: 0.85rem;
  margin-bottom: 0.6rem;
  box-shadow: 0 2px 8px var(--fw-shadow);
}
.card strong { font-size: 1rem; }
.card .meta { font-size: 0.85rem; color: var(--fw-text-muted); margin-top: 0.25rem; }
.card .actions { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.6rem; }

.badge {
  display: inline-block;
  font-size: 0.75rem;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  background: var(--fw-surface-muted);
  color: var(--fw-green-700);
  margin-left: 0.35rem;
}

.error-text { color: var(--fw-error); font-size: 0.9rem; margin: 0.5rem 0; }
.hint { font-size: 0.85rem; color: var(--fw-text-muted); margin: 0.5rem 0; }
.sync-status { font-size: 0.85rem; opacity: 0.95; }

.fab {
  position: fixed;
  right: 1rem;
  bottom: calc(4.75rem + var(--safe-bottom));
  width: 3.25rem;
  height: 3.25rem;
  border-radius: 50%;
  border: none;
  background: var(--fw-primary);
  color: #fff;
  font-size: 1.5rem;
  box-shadow: 0 4px 16px var(--fw-shadow);
  cursor: pointer;
  z-index: 15;
}

[hidden] { display: none !important; }

.section-title { margin: 0 0 0.75rem; font-size: 1.15rem; }
.panel-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.75rem; }
.panel-header h2 { margin: 0; font-size: 1.1rem; }

.preview-section { border-top: 1px solid var(--fw-border); padding-top: 0.5rem; }
.preview-row { display: flex; justify-content: space-between; gap: 0.75rem; padding: 0.45rem 0; font-size: 0.95rem; }
.preview-label { color: var(--fw-text-muted); }
.amount-stack { text-align: right; display: flex; flex-direction: column; align-items: flex-end; gap: 0.1rem; }
.amount-stack small { color: var(--fw-text-muted); font-size: 0.8rem; }

.nav-card {
  display: block;
  background: var(--fw-surface);
  border: 1px solid var(--fw-border);
  border-radius: 10px;
  padding: 0.85rem 1rem;
  margin-bottom: 0.6rem;
  text-decoration: none;
  color: inherit;
  box-shadow: 0 2px 8px var(--fw-shadow);
}
.nav-card-title { display: block; font-weight: 700; }
.nav-card-hint { display: block; font-size: 0.85rem; color: var(--fw-text-muted); margin-top: 0.2rem; }
.card-static { color: inherit; }

.field-row { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.field-row .field { flex: 1 1 8rem; }
.field-narrow { flex: 0 1 5.5rem !important; }
.flex-2 { flex: 2 1 12rem !important; }

fieldset.field { border: 1px solid var(--fw-border); border-radius: 8px; padding: 0.75rem; }
.radio, .checkbox { display: block; margin: 0.35rem 0; font-size: 0.95rem; }

.invoice-group { margin-bottom: 0.75rem; }
.invoice-group summary { font-weight: 700; cursor: pointer; padding: 0.5rem 0; }
.filters-panel { margin-bottom: 0.75rem; }

.card-click { cursor: pointer; }
.card-top { display: flex; align-items: center; justify-content: space-between; }
.countdown-overdue { color: var(--fw-error); font-weight: 600; }
.countdown-due_today { color: #b45309; font-weight: 600; }

.line-item { align-items: flex-end; margin-bottom: 0.5rem; }
.totals-panel { margin-top: 0.75rem; }

.badge-send_queued, .badge-send_failed { background: #fef3c7; color: #92400e; }
.badge-sent { background: #dbeafe; color: #1e40af; }
.badge-paid { background: #dcfce7; color: #166534; }

.status-select { max-width: 8rem; padding: 0.35rem; font-size: 0.85rem; }