:root {
  color-scheme: light dark;
  --bg: #f7f7f8;
  --fg: #1a1a1a;
  --card: #ffffff;
  --border: #d9d9de;
  --accent: #2563eb;
  --accent-fg: #ffffff;
  --danger: #b91c1c;
  --success: #15803d;
  --warning: #b45309;
  --muted: #6b7280;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14151a;
    --fg: #e8e8ea;
    --card: #1e1f26;
    --border: #33343d;
    --muted: #9a9aa2;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--fg);
}

main {
  max-width: 860px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.top-nav { display: flex; align-items: center; gap: 1.25rem; margin-bottom: 1rem; }
.top-nav .nav-right { margin-left: auto; }
.top-nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  padding-bottom: 0.25rem;
  border-bottom: 2px solid transparent;
}
.top-nav a.active { color: var(--accent); border-bottom-color: var(--accent); }
.top-nav a:hover { color: var(--fg); }

h1 { font-size: 1.5rem; margin-bottom: 0.25rem; }
h2 { font-size: 1.1rem; margin-top: 2rem; }

.ingest-box {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  margin-top: 1rem;
}
.ingest-row { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.ingest-row .hint { margin: 0.2rem 0 0; }
.ingest-row button { flex-shrink: 0; }

.hint { color: var(--muted); font-size: 0.9rem; }

form, section {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
  margin-top: 1rem;
}

.field { display: flex; flex-direction: column; gap: 0.35rem; margin-bottom: 1rem; }
.field-row { display: flex; gap: 1rem; }
.field-row .field { flex: 1; }

label { font-size: 0.85rem; font-weight: 600; }

select, input, textarea, button {
  font: inherit;
  padding: 0.5rem 0.6rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--fg);
}

textarea, input[type="text"], input[type="date"], input[type="email"] { resize: vertical; width: 100%; }

button {
  background: var(--accent);
  color: var(--accent-fg);
  border: none;
  cursor: pointer;
  font-weight: 600;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.checkbox-toolbar { display: flex; gap: 0.5rem; margin-bottom: 0.4rem; }
.checkbox-toolbar button {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--border);
  font-size: 0.8rem;
  padding: 0.3rem 0.5rem;
}

.checkbox-list {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  max-height: 220px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.5rem 0.7rem;
  background: var(--bg);
}

.checkbox-list label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 400;
  cursor: pointer;
}

.checkbox-list input[type="checkbox"] {
  width: auto;
  padding: 0;
}

.table-wrap { overflow-x: auto; }

table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 0.4rem 0.6rem; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; }

.message-cell { white-space: pre-wrap; min-width: 260px; }

.login-main {
  max-width: 360px;
  margin: 3.5rem auto;
  padding: 0 1.5rem;
}
.login-form { display: flex; flex-direction: column; gap: 0.75rem; }
.login-form h1 { font-size: 1.3rem; margin: 0; }
.login-form button { margin-top: 0.25rem; }

.status-sent { color: var(--success); font-weight: 600; }
.status-unconfirmed { color: var(--warning); font-weight: 600; }
.status-failed { color: var(--danger); font-weight: 600; }

.apartment-block { margin-top: 2rem; }
.apartment-block h2 { border-bottom: 1px solid var(--border); padding-bottom: 0.4rem; }
.quarter-block { margin-top: 1.25rem; }
.quarter-block h3 { font-size: 1rem; color: var(--muted); margin-bottom: 0.5rem; }
.quarter-block h4 { font-size: 0.9rem; margin: 1rem 0 0.3rem; }

.geis-table th:not(:first-child), .geis-table td:not(:first-child) { text-align: right; }
.geis-table tfoot td { font-weight: 700; border-top: 2px solid var(--border); border-bottom: none; }

.quarter-total { text-align: right; font-weight: 700; margin-top: 0.4rem; }

.table-detail { margin: -0.25rem 0 1rem; font-size: 0.85rem; }
.table-detail summary { cursor: pointer; color: var(--accent); font-weight: 600; padding: 0.2rem 0; }
.table-detail-group { margin-top: 0.5rem; padding-left: 0.5rem; border-left: 2px solid var(--border); }
.table-detail-group strong { display: block; margin-bottom: 0.15rem; }
.table-detail-group ul { margin: 0 0 0.6rem; padding-left: 1.1rem; }
.table-detail-group li { margin-bottom: 0.15rem; color: var(--muted); }

.table-detail-group li.detail-flag-red,
.table-detail-group li.detail-flag-discrepancy,
.table-detail-group li.detail-flag-yellow {
  color: var(--fg);
  border-radius: 4px;
  padding: 0.1rem 0.4rem;
  margin-left: -0.4rem;
}
.table-detail-group li.detail-flag-red { background: color-mix(in srgb, var(--danger) 18%, transparent); }
.table-detail-group li.detail-flag-discrepancy { background: color-mix(in srgb, var(--warning) 20%, transparent); }
.table-detail-group li.detail-flag-yellow { background: color-mix(in srgb, #eab308 25%, transparent); }

.costs-accordion {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  margin-top: 1rem;
}
.costs-accordion summary { cursor: pointer; font-weight: 600; }
.costs-accordion #btn-costs-save { margin-top: 0.75rem; }
.costs-grid { margin-top: 0.75rem; display: flex; flex-direction: column; gap: 0.5rem; max-width: 420px; }
.costs-row { display: flex; align-items: center; justify-content: space-between; gap: 1rem; font-weight: 400; }
.costs-input-wrap { display: flex; align-items: center; gap: 0.3rem; flex-shrink: 0; }
.costs-input-wrap input { width: 6rem; }

.checkbox-inline { display: flex; align-items: center; gap: 0.5rem; font-weight: 400; cursor: pointer; }
.checkbox-inline input { width: auto; }

.receipts-actions { display: flex; gap: 0.6rem; margin-top: 1rem; flex-wrap: wrap; }

tr.receipt-company-row { background: color-mix(in srgb, #3b82f6 8%, transparent); }

.btn-receipt-generate { font-size: 0.85rem; padding: 0.35rem 0.6rem; }
.btn-receipt-badge {
  font-size: 0.85rem;
  padding: 0.35rem 0.6rem;
  background: color-mix(in srgb, var(--success) 18%, var(--card));
  color: var(--success);
  border: 1px solid var(--success);
  border-radius: 6px;
  cursor: pointer;
  font-weight: 600;
}

.btn-mail-open { font-size: 0.85rem; padding: 0.35rem 0.6rem; }
.btn-mail-open.sent {
  background: color-mix(in srgb, var(--success) 18%, var(--card));
  color: var(--success);
  border: 1px solid var(--success);
}
.modal.modal-wide { max-width: 640px; }
#mail-form { background: transparent; border: none; padding: 0; margin: 0; }
#mail-form .hint { margin: 0; }

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 3rem 1rem;
  overflow-y: auto;
  z-index: 100;
}
.modal-overlay[hidden] { display: none; }
.modal {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem;
  width: 100%;
  max-width: 480px;
}
.modal h2 { margin-top: 0; font-size: 1.1rem; }
.modal .field { margin-bottom: 0.85rem; }
.modal-actions { display: flex; gap: 0.6rem; justify-content: flex-end; margin-top: 1rem; }
.modal-actions button[type="button"]:not(#btn-modal-generate) {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--border);
}
#modal-pdf-frame {
  width: 100%;
  height: 60vh;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
}

.badge-blue {
  display: inline-block;
  font-size: 0.78rem;
  color: var(--fg);
  background: color-mix(in srgb, #3b82f6 22%, transparent);
  border-radius: 4px;
  padding: 0.1rem 0.4rem;
}

#flags-output details { margin-top: 0.75rem; }
#flags-output summary { cursor: pointer; font-weight: 600; }
#flags-output ul { margin: 0.5rem 0 0; padding-left: 1.25rem; }
#flags-output li { margin-bottom: 0.3rem; font-size: 0.9rem; }

.error {
  color: var(--danger);
  background: color-mix(in srgb, var(--danger) 12%, var(--card));
  border: 1px solid var(--danger);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  margin-top: 1rem;
}