:root {
  --bg: #f6f8fb;
  --card: #ffffff;
  --line: #d9e0ea;
  --text: #1f2a37;
  --muted: #5e6b7a;
  --brand: #0f766e;
  --danger: #b42318;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #edf2f7 0%, #f8fafc 100%);
}

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
}

.sidebar {
  background: #fff;
  border-right: 1px solid var(--line);
  padding: 16px 14px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: auto;
}

.sidebar-brand {
  display: block;
  font-weight: 700;
  font-size: 18px;
  margin-bottom: 14px;
  color: var(--text);
}

.sidebar-brand:hover {
  text-decoration: none;
}

.sidebar-nav {
  display: grid;
  gap: 12px;
}

.nav-group {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #f8fafc;
  padding: 10px;
  display: grid;
  gap: 6px;
}

.nav-group-title {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--muted);
  margin-bottom: 2px;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.nav-group-title::-webkit-details-marker {
  display: none;
}

.nav-group-title::after {
  content: "▾";
  float: right;
  color: var(--muted);
  transform: rotate(-90deg);
  transition: transform 0.2s ease;
}

.nav-group[open] > .nav-group-title::after {
  transform: rotate(0deg);
}

.nav-link {
  display: block;
  padding: 8px 10px;
  border-radius: 8px;
  color: var(--text);
}

.nav-group:not([open]) .nav-link {
  display: none;
}

.nav-link:hover {
  text-decoration: none;
  background: #eef4fb;
}

.nav-link.active {
  background: #dbf3ef;
  color: #0c5f58;
  font-weight: 600;
}

.main-shell {
  min-width: 0;
}

.main-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 18px;
  border-bottom: 1px solid var(--line);
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 10;
}

.main-topbar-title {
  font-weight: 600;
}

.container {
  max-width: 1380px;
  margin: 18px auto;
  padding: 0 18px 30px;
}

.notice {
  border: 1px solid var(--line);
  padding: 10px 12px;
  border-radius: 8px;
  margin-bottom: 12px;
  background: #fff;
}

.notice.success { border-color: #1f883d; color: #1f883d; }
.notice.error { border-color: var(--danger); color: var(--danger); }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 16px;
}

h1, h2, h3 { margin: 0 0 12px; }

.stack { display: grid; gap: 12px; }
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.amount-row {
  align-items: end;
}

label {
  display: grid;
  gap: 6px;
  font-size: 14px;
}

input, select, textarea, button {
  font: inherit;
}

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

button {
  border: 1px solid var(--brand);
  background: var(--brand);
  color: #fff;
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
}

button:hover { opacity: 0.92; }

.btn-secondary {
  background: #fff;
  color: var(--text);
  border-color: var(--line);
}

.btn-danger {
  background: #fff;
  color: var(--danger);
  border-color: #f3c5c1;
}

.table-wrap { overflow: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  min-width: 700px;
}

th, td {
  padding: 8px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th { color: var(--muted); font-weight: 600; }

.actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.split-actions {
  margin-top: 12px;
}

.quick-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.quick-filter {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  text-decoration: none;
}

.quick-filter.active {
  border-color: var(--brand);
  background: #e6fffa;
  color: var(--brand);
}

.compact-card details > summary {
  cursor: pointer;
}

.top-gap {
  margin-top: 8px;
}

.saved-filters {
  margin-top: 12px;
  display: grid;
  gap: 8px;
}

.saved-filter-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
  background: #fff;
}

.checkbox-row {
  display: flex;
  gap: 8px;
  align-items: center;
}

.checkbox-row input[type="checkbox"] {
  width: auto;
}

.hidden-select {
  display: none;
}

.picker-btn {
  justify-content: flex-start;
  text-align: left;
  white-space: normal;
}

.picker-modal {
  position: fixed;
  inset: 0;
  background: rgba(20, 24, 35, 0.45);
  display: grid;
  place-items: center;
  z-index: 1000;
  padding: 16px;
}

.picker-modal.hidden {
  display: none;
}

.picker-modal-card {
  width: min(640px, 100%);
  max-height: 80vh;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  padding: 12px;
  display: grid;
  gap: 10px;
}

.picker-modal-list {
  display: grid;
  gap: 6px;
}

.picker-option {
  width: 100%;
  text-align: left;
  background: #fff;
  color: var(--text);
  border: 1px solid var(--line);
}

.picker-option.active {
  border-color: var(--brand);
  background: #e6fffa;
}

.muted { color: var(--muted); }

pre.preview {
  white-space: pre-wrap;
  background: #f8fafc;
  border: 1px dashed var(--line);
  padding: 10px;
  border-radius: 8px;
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  background: #eff6ff;
  border: 1px solid #dbeafe;
  font-size: 12px;
}

.badge-warning {
  background: #fff7ed;
  border-color: #fed7aa;
  color: #9a3412;
}

.row-flags {
  margin-top: 4px;
}

.badge-compact {
  padding: 2px 6px;
  font-size: 11px;
  white-space: nowrap;
}

.nowrap {
  white-space: nowrap;
}

.compact-row-actions > summary {
  cursor: pointer;
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  font-size: 13px;
}

.compact-row-actions > summary::-webkit-details-marker {
  display: none;
}

.chat-feed {
  max-height: 520px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  background: #f8fafc;
  display: grid;
  gap: 8px;
}

.chat-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
  background: #fff;
}

.chat-item.chat-out {
  border-color: #b9dfd6;
  background: #edfdfa;
}

.chat-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 4px;
}

.login-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 20px;
}

.login-card {
  width: 100%;
  max-width: 380px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  padding: 18px;
}

@media (max-width: 900px) {
  .app-shell {
    grid-template-columns: 1fr;
  }
  .sidebar {
    position: static;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--line);
    padding: 12px;
  }
  .sidebar-nav {
    gap: 8px;
  }
  .main-topbar {
    position: static;
  }
  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }
  table {
    min-width: 560px;
  }
  .saved-filter-item {
    flex-direction: column;
    align-items: flex-start;
  }
}