:root {
  --bg: #f5f6f8;
  --card-bg: #ffffff;
  --text: #1f2933;
  --muted: #6b7280;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --success: #16a34a;
  --danger: #dc2626;
  --border: #e5e7eb;
  --income: #16a34a;
  --expense: #dc2626;
}

* { box-sizing: border-box; }

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

.navbar {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 1.5rem;
  flex-wrap: wrap;
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar-brand { font-weight: 700; font-size: 1.1rem; color: var(--primary); text-decoration: none; }
.navbar-links { display: flex; gap: 1rem; flex-wrap: wrap; flex: 1; }
.navbar-links a, .navbar-right a { color: var(--text); text-decoration: none; font-size: 0.92rem; }
.navbar-links a:hover, .navbar-right a:hover { color: var(--primary); }
.navbar-right { display: flex; gap: 0.75rem; align-items: center; }

.navbar-dropdown { position: relative; }
.navbar-dropdown summary {
  color: var(--text);
  font-size: 0.92rem;
  cursor: pointer;
  list-style: none;
}
.navbar-dropdown summary::-webkit-details-marker { display: none; }
.navbar-dropdown summary:hover { color: var(--primary); }
.navbar-dropdown[open] summary { color: var(--primary); }
.navbar-dropdown-menu {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 0;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.4rem;
  display: flex;
  flex-direction: column;
  min-width: 160px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  z-index: 10;
}
.navbar-dropdown-menu a {
  padding: 0.4rem 0.6rem;
  border-radius: 6px;
  color: var(--text);
  text-decoration: none;
  font-size: 0.92rem;
}
.navbar-dropdown-menu a:hover { background: var(--bg); color: var(--primary); }

.navbar-dropdown-right .navbar-dropdown-menu { left: auto; right: 0; }
.navbar-menu { display: contents; }
.active-lang { font-weight: 700; color: var(--primary) !important; }

.nav-toggle-checkbox { display: none; }
.nav-toggle-label {
  display: none;
  margin-left: auto;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  order: 2;
}

.container { max-width: 1600px; margin: 0 auto; padding: 1.5rem; }

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}

.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; }
.card-grid-summary { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }

.budget-equation { display: flex; flex-direction: column; justify-content: center; gap: 0.35rem; }
.budget-equation-row { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; font-size: 0.95rem; }
.budget-equation-total {
  border-top: 1px solid var(--border);
  margin-top: 0.35rem;
  padding-top: 0.5rem;
  font-weight: 700;
  font-size: 1.3rem;
}

.card-highlight {
  border: 2px solid var(--primary);
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.18);
}
.card-highlight .stat-value { font-size: 1.9rem; }

.card-shared {
  background: #eef2ff;
  border-color: #c7d2fe;
}

h1 { font-size: 1.5rem; margin-top: 0; }
h2 { font-size: 1.2rem; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 0.5rem 0.6rem; border-bottom: 1px solid var(--border); font-size: 0.92rem; }

/* Forces the date/description columns to line up at the same width across
   separate tables stacked on the same page (table-layout needs every column
   in the header row sized, so the unlabeled ones just get to share the rest). */
.table-aligned { table-layout: fixed; }
.table-aligned .col-date { width: 15%; }
.table-aligned .col-description { width: 40%; }
.col-check { width: 28px; padding-right: 0; text-align: center; }
th { color: var(--muted); font-weight: 600; }

.amount-positive { color: var(--income); font-weight: 600; }
.amount-negative { color: var(--expense); font-weight: 600; }

.btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  background: var(--primary);
  color: #fff;
  text-decoration: none;
  border: none;
  cursor: pointer;
  font-size: 0.9rem;
}
.btn:hover { background: var(--primary-dark); }
.btn-danger { background: var(--danger); }
.btn-secondary { background: var(--muted); }
.btn-sm { padding: 0.3rem 0.6rem; font-size: 0.8rem; }

form.inline { display: inline; }

.form-group { margin-bottom: 1rem; }
.form-group label { display: block; margin-bottom: 0.3rem; font-size: 0.88rem; color: var(--muted); }
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.95rem;
}
.form-row { display: flex; gap: 1rem; flex-wrap: wrap; }
.form-row .form-group { flex: 1; min-width: 180px; }

.alert { padding: 0.7rem 1rem; border-radius: 6px; margin-bottom: 1rem; font-size: 0.9rem; }
.alert-success { background: #dcfce7; color: #166534; }
.alert-danger { background: #fee2e2; color: #991b1b; }

.toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; flex-wrap: wrap; gap: 0.5rem; }

.badge { display: inline-block; padding: 0.15rem 0.5rem; border-radius: 999px; font-size: 0.75rem; color: #fff; }

.month-nav { display: flex; align-items: center; gap: 1rem; margin-bottom: 1rem; }
.month-nav a { text-decoration: none; color: var(--primary); font-weight: 600; }

.due-row { background: #fffbeb; }
.stat-value { font-size: 1.4rem; font-weight: 700; }

.future-tx { background: #fffbeb; }
.future-tx td { font-style: italic; }
.badge-future {
  display: inline-block;
  padding: 0.1rem 0.4rem;
  border-radius: 999px;
  font-size: 0.7rem;
  font-style: normal;
  background: #fef3c7;
  color: #92400e;
  margin-left: 0.4rem;
}
.muted { color: var(--muted); font-size: 0.85rem; }

.modal {
  border: none;
  border-radius: 10px;
  padding: 1.5rem;
  background: var(--card-bg);
  width: 100%;
  max-width: 480px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}
.modal::backdrop { background: rgba(0, 0, 0, 0.45); }

.category-dot { display: inline-block; width: 0.75rem; height: 0.75rem; border-radius: 50%; flex-shrink: 0; }

.category-card { padding: 0.5rem 1.25rem; }
.category-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  padding: 0.6rem 0;
}
.category-row-root { padding-bottom: 0.75rem; }
.category-info { display: flex; align-items: center; flex-wrap: wrap; gap: 0.5rem; min-width: 0; }
.category-actions { display: flex; gap: 0.5rem; flex-shrink: 0; }
.category-children { border-top: 1px solid var(--border); }
.category-row-child { padding-left: 1.5rem; border-bottom: 1px solid var(--border); }
.category-row-child:last-child { border-bottom: none; }

.attachment-image { display: block; max-width: 100%; max-height: 70vh; margin: 0 auto; border-radius: 6px; }
.attachment-frame { width: 100%; height: 70vh; border: 1px solid var(--border); border-radius: 6px; }

.attachment-cell { width: 2.5rem; text-align: center; }
.attachment-slot { display: inline-block; width: 1.8rem; text-align: center; vertical-align: middle; margin-right: 0.5rem; }
.attachment-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.3rem;
  line-height: 1;
  padding: 0.2rem;
  border-radius: 4px;
}
.attachment-btn:hover { background: var(--bg); }

.badge-kind { display: inline-block; padding: 0.15rem 0.5rem; border-radius: 999px; font-size: 0.75rem; font-weight: 600; }
.badge-kind-expense { background: #fee2e2; color: #991b1b; }
.badge-kind-income { background: #dcfce7; color: #166534; }
.badge-kind-both { background: #e5e7eb; color: #374151; }

.chart-legend { display: flex; gap: 1.25rem; margin-bottom: 0.75rem; font-size: 0.85rem; color: var(--muted); }
.chart-legend span { display: inline-flex; align-items: center; gap: 0.4rem; }
.chart-key { display: inline-block; width: 18px; height: 0; border-top: 2px solid var(--primary); }
.chart-key-dashed { border-top-style: dashed; }

.balance-chart-container { position: relative; }
.balance-chart-svg { width: 100%; height: auto; display: block; overflow: visible; }
.chart-grid { stroke: var(--border); stroke-width: 1; }
.chart-axis-label { fill: var(--muted); font-size: 11px; }
.chart-zero-line { stroke: var(--text); stroke-width: 1.5; opacity: 0.55; }
.chart-axis-label-zero { fill: var(--text); font-size: 11px; font-weight: 700; }
.chart-line-realized { stroke: var(--primary); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.chart-line-projected {
  stroke: var(--primary);
  stroke-width: 2;
  stroke-linejoin: round;
  stroke-linecap: round;
  stroke-dasharray: 6 5;
  opacity: 0.7;
}
.chart-end-dot { fill: var(--primary); stroke: var(--card-bg); stroke-width: 2; }
.chart-crosshair { stroke: var(--muted); stroke-width: 1; stroke-dasharray: 3 3; pointer-events: none; }
.chart-tooltip {
  position: absolute;
  pointer-events: none;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.4rem 0.6rem;
  font-size: 0.85rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  white-space: nowrap;
  z-index: 5;
}
.chart-tooltip strong { display: block; color: var(--text); }
.chart-tooltip-item {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: 0.2rem;
  padding-top: 0.2rem;
  border-top: 1px solid var(--border);
}

.app-footer {
  text-align: center;
  padding: 1.5rem 1rem 1rem;
  color: var(--muted);
  font-size: 0.78rem;
}
.app-footer a { color: var(--muted); }
.app-footer a:hover { color: var(--primary); }

.month-picker-display { cursor: pointer; background: var(--card-bg); }
.month-picker-popup {
  position: fixed;
  width: 220px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
  padding: 0.6rem;
  z-index: 1000;
}
.month-picker-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
  font-weight: 700;
}
.month-picker-nav {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
  color: var(--primary);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}
.month-picker-nav:hover { background: var(--bg); }
.month-picker-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.35rem; }
.month-picker-cell {
  border: 1px solid transparent;
  background: var(--bg);
  color: var(--text);
  border-radius: 6px;
  padding: 0.4rem 0;
  font-size: 0.85rem;
  cursor: pointer;
}
.month-picker-cell:hover { border-color: var(--primary); }
.month-picker-cell.month-picker-today { font-weight: 700; }
.month-picker-cell.month-picker-selected { background: var(--primary); color: #fff; }

@media (max-width: 780px) {
  .nav-toggle-label { display: block; font-size: 1.6rem; }

  .navbar { position: relative; }

  .navbar-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--card-bg);
    border-top: 1px solid var(--border);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
    padding: 0.5rem;
    max-height: calc(100vh - 60px);
    overflow-y: auto;
    z-index: 200;
  }
  .nav-toggle-checkbox:checked ~ .navbar-menu { display: flex; }

  .navbar-links, .navbar-right {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
    width: 100%;
  }
  .navbar-right {
    border-top: 1px solid var(--border);
    padding-top: 0.5rem;
    margin-top: 0.5rem;
  }

  .navbar-links a, .navbar-right a, .navbar-dropdown summary {
    display: block;
    padding: 0.85rem 0.6rem;
    font-size: 1.05rem;
    border-radius: 8px;
  }
  .navbar-links a:active, .navbar-right a:active, .navbar-dropdown summary:active {
    background: var(--bg);
  }

  .navbar-dropdown-menu {
    position: static;
    box-shadow: none;
    border: none;
    border-left: 2px solid var(--border);
    margin: 0.1rem 0 0.35rem 1rem;
    padding: 0.1rem 0 0.1rem 0.75rem;
  }
  .navbar-dropdown-menu a {
    padding: 0.7rem 0.5rem;
    font-size: 1rem;
  }
}

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

  h1 { font-size: 1.25rem; }
  .stat-value { font-size: 1.2rem; }

  .form-row { flex-direction: column; }
  .form-row .form-group { min-width: 0; width: 100%; }

  .toolbar { flex-direction: column; align-items: stretch; }
  .toolbar > * { width: 100%; text-align: center; }

  .month-nav { flex-wrap: wrap; justify-content: center; }

  table { font-size: 0.85rem; }
  th, td { padding: 0.4rem 0.5rem; }

  .modal { max-width: calc(100vw - 2rem); }

  /* Turns a wide table into a stack of cards instead of a table that scrolls
     sideways: each row becomes a block, each cell a label/value line (the
     label comes from data-label, set on the <td> in the template). */
  .table-responsive thead { display: none; }
  .table-responsive, .table-responsive tbody, .table-responsive tr, .table-responsive td {
    display: block;
    width: 100%;
  }
  .table-responsive tr {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    margin-bottom: 0.75rem;
  }
  .table-responsive tr:last-child { margin-bottom: 0; }
  .table-responsive td {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    padding: 0.35rem 0;
    border-bottom: 1px solid var(--border);
    text-align: right;
  }
  .table-responsive td:last-child { border-bottom: none; }
  .table-responsive td::before {
    content: attr(data-label);
    font-weight: 600;
    color: var(--muted);
    text-align: left;
    flex-shrink: 0;
  }
  .table-responsive td[colspan] {
    display: block;
    text-align: center;
    border-bottom: none;
  }
  .table-responsive td[colspan]::before { content: none; }
  .table-responsive td.attachment-cell:empty { display: none; }
  .table-responsive .attachment-slot:empty { display: none; }
}