:root {
  --bg: #eef3f7;
  --panel: #ffffff;
  --panel-muted: #f8fafc;
  --ink: #18212b;
  --muted: #5f6b7a;
  --line: #d3dbe5;
  --line-strong: #b8c4d0;
  --accent: #2a5d8f;
  --accent-soft: #e7eff7;
  --accent-strong: #20384f;
  --warning: #9a4339;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --shadow-soft: 0 6px 18px rgba(24, 33, 43, 0.05);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, #f7fafc 0%, var(--bg) 100%);
  font-family: "IBM Plex Sans", "Aptos", "Segoe UI", "Helvetica Neue", sans-serif;
  font-variant-numeric: tabular-nums;
  line-height: 1.45;
}

a {
  color: inherit;
}

.app-shell {
  min-height: 100vh;
}

.sidebar {
  background: #243446;
  color: #edf2f7;
  padding: 1.5rem;
  border-right: 1px solid rgba(184, 196, 208, 0.16);
}

.main-content {
  padding: 1.5rem;
}

.eyebrow {
  margin: 0 0 0.4rem;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
}

.sidebar .eyebrow {
  color: rgba(237, 242, 247, 0.68);
}

.nav-stack {
  display: grid;
  gap: 0.5rem;
}

.sidebar-nav {
  display: grid;
  gap: 1.25rem;
  margin: 1.5rem 0;
}

.nav-group {
  display: grid;
  gap: 0.55rem;
}

.nav-group-label {
  margin: 0;
  color: rgba(237, 242, 247, 0.5);
}

.nav-button {
  width: 100%;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.nav-link {
  display: block;
  padding: 0.7rem 0.85rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: rgba(237, 242, 247, 0.84);
  background: rgba(255, 255, 255, 0.03);
  border-left: 3px solid transparent;
}

.nav-link.active {
  color: #f7fbff;
  background: rgba(42, 93, 143, 0.28);
  border-left-color: #7fb0db;
  font-weight: 600;
}

form.button_to .nav-button {
  appearance: none;
}

.sidebar-footer {
  display: grid;
  gap: 0.8rem;
  margin-top: 2rem;
}

.sidebar-footer p {
  margin: 0;
  color: rgba(237, 242, 247, 0.66);
}

.flash {
  margin: 0 0 1rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}

.flash-notice {
  background: var(--accent-soft);
}

.flash-alert {
  background: #f9e1dc;
  color: var(--warning);
}

.hero,
.panel,
.stat-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
  box-shadow: var(--shadow-soft);
}

.hero {
  display: grid;
  gap: 1rem;
  padding: 1.6rem;
  background: linear-gradient(180deg, #fbfdff 0%, #f3f7fb 100%);
}

.hero h1,
.panel h2 {
  margin: 0;
  letter-spacing: -0.02em;
}

.hero-copy {
  max-width: 48rem;
  color: var(--muted);
}

.hero-actions,
.quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.stats-grid,
.panel-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}

.stat-card,
.panel {
  padding: 1.25rem;
}

.stat-card strong,
.panel strong {
  color: var(--accent-strong);
}

.stat-label,
.meta {
  color: var(--muted);
}

.stat-label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid #e7edf3;
}

.stack-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.9rem;
}

.stack-list li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 0.95rem;
  border-bottom: 1px solid var(--line);
}

.stack-list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.stack-list p,
.text-link,
.empty-state {
  margin: 0.2rem 0 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.65rem 0.95rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  text-decoration: none;
  font: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
}

.button-primary {
  color: white;
  background: var(--accent);
  border-color: var(--accent);
}

.button-secondary {
  color: var(--ink);
  border-color: var(--line-strong);
  background: var(--panel);
}

.button-ghost {
  color: #edf2f7;
  border-color: rgba(237, 242, 247, 0.24);
  background: transparent;
}

.auth-panel {
  max-width: 42rem;
  margin: 3rem auto;
}

.auth-links {
  margin-top: 1rem;
  line-height: 1.9;
}

form.button_to {
  margin: 0;
}

label {
  display: block;
  margin-bottom: 0.35rem;
  font-weight: 600;
  color: #334155;
  font-size: 0.92rem;
}

input[type="text"],
input[type="email"],
input[type="number"],
input[type="date"],
input[type="password"],
select,
textarea {
  width: 100%;
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: #fcfdff;
  color: var(--ink);
  font: inherit;
  box-shadow: inset 0 1px 2px rgba(24, 33, 43, 0.03);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
input[type="password"]:focus,
select:focus,
textarea:focus {
  outline: 0;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(42, 93, 143, 0.12);
}

textarea {
  resize: vertical;
}

.form-grid {
  display: grid;
  gap: 1rem;
}

.form-actions {
  margin-top: 1rem;
}

.filters-panel {
  margin: 1rem 0 1.25rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel-muted);
}

.filter-grid {
  display: grid;
  gap: 0.75rem;
}

.filter-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.9rem;
}

.page-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1rem 0;
}

.table-wrap {
  margin: 1rem 0;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel);
  box-shadow: var(--shadow-soft);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}

.data-table th,
.data-table td {
  padding: 0.8rem 0.95rem;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.data-table th.amount-cell,
.data-table td.amount-cell {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.data-table thead th {
  background: #edf3f8;
  color: #334155;
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  position: sticky;
  top: 0;
  z-index: 1;
}

.data-table tbody tr:nth-child(even) {
  background: #fbfdff;
}

.sort-link {
  text-decoration: none;
}

.sort-link:hover {
  color: var(--accent);
}

.pagination {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0 1.25rem;
}

.page-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.5rem;
  padding: 0.55rem 0.8rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--panel);
  text-decoration: none;
}

.page-link.current {
  color: white;
  border-color: var(--accent);
  background: var(--accent);
}

.page-link.disabled {
  color: var(--muted);
  opacity: 0.6;
}

.data-table tbody tr:last-child td {
  border-bottom: 0;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.checkbox-row input {
  width: auto;
}

.checkbox-row label {
  margin: 0;
}

.field-hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.full-span {
  grid-column: 1 / -1;
}

@media (min-width: 960px) {
  .app-shell {
    display: grid;
    grid-template-columns: 280px 1fr;
  }

  .sidebar {
    min-height: 100vh;
    position: sticky;
    top: 0;
  }

  .stats-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .panel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .form-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .filter-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .main-content {
    padding: 1rem;
  }

  .filters-panel,
  .table-wrap {
    border-radius: var(--radius-md);
  }

  .data-table {
    min-width: 620px;
    font-size: 0.92rem;
  }

  .data-table th,
  .data-table td {
    padding: 0.65rem 0.75rem;
  }

  .button {
    padding: 0.6rem 0.85rem;
  }

  .pagination {
    gap: 0.4rem;
  }

  .page-link {
    min-width: 2.2rem;
    padding: 0.5rem 0.7rem;
    font-size: 0.92rem;
  }
}