/* ── Design Tokens ─────────────────────────────────────────── */
:root {
  --blue-600:  #1d4ed8;
  --blue-100:  #dbeafe;
  --gray-50:   #f9fafb;
  --white:     #ffffff;
  --gray-900:  #111827;
  --gray-500:  #6b7280;
  --gray-200:  #e5e7eb;
  --green-600: #16a34a;
  --red-600:   #dc2626;
  --amber-600: #d97706;
  --radius:    8px;
  --shadow:    0 1px 4px rgba(0,0,0,0.12);
  --font:      -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, sans-serif;

  /* Semantic aliases — page-specific CSS and inline styles continue using these */
  --ink:      #111827;
  --paper:    #f9fafb;
  --paper-2:  #ffffff;
  --rule:     #e5e7eb;
  --accent:   #1d4ed8;
  --accent-2: #16a34a;
  --warn:     #d97706;
  --dim:      #6b7280;
  --mono:     -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, sans-serif;
  --serif:    -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, sans-serif;
}

/* ── Reset ───────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 15px; }

body {
  background: var(--gray-50);
  color: var(--gray-900);
  font-family: var(--font);
  min-height: 100vh;
  line-height: 1.5;
}

/* ── Layout ──────────────────────────────────────────────────── */
.page { max-width: 1100px; margin: 0 auto; padding: 0 24px 40px; }

/* ── Header ──────────────────────────────────────────────────── */
header {
  border-bottom: 1px solid var(--gray-200);
  padding: 16px 0 12px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

/* ── Logout button in header ─────────────────────────────────── */
.logout-btn {
  margin-left: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--dim);
  text-decoration: none;
  padding: 6px;
  border-radius: var(--radius);
  transition: color 0.15s, background 0.15s;
}
.logout-btn:hover { color: var(--ink); background: var(--gray-200); }
.logout-btn svg { width: 20px; height: 20px; stroke: currentColor; }

/* ── Logout button: hidden on desktop (nav tab handles it) ───── */
.logout-btn { display: none; }

/* ── Bottom nav: mobile only ─────────────────────────────────── */
.bottom-nav {
  display: none; /* hidden on desktop */
}

.bottom-tab {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 6px 4px 4px;
  color: var(--dim);
  text-decoration: none;
  font-size: 0.6rem;
  font-weight: 500;
  gap: 2px;
  transition: color 0.15s;
  letter-spacing: 0.02em;
}
.bottom-tab:hover { color: var(--ink); }
.bottom-tab.active { color: var(--blue-600); }
.bottom-tab svg { width: 22px; height: 22px; stroke: currentColor; fill: none; }

/* ── Navigation loading overlay ──────────────────────────────── */
.nav-loading {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}
.nav-loading.show { display: flex; }
.nav-loading .nav-spinner {
  width: 44px;
  height: 44px;
  border: 3px solid var(--gray-200);
  border-top-color: var(--blue-600);
  border-radius: 50%;
  animation: nav-spin 0.7s linear infinite;
}
@keyframes nav-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
  .nav-loading .nav-spinner { animation-duration: 1.4s; }
}

.site-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
  flex-shrink: 0;
  color: var(--gray-900);
}

.site-title em {
  font-style: normal;
  color: var(--blue-600);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  flex-wrap: wrap;
}

/* ── Nav tabs ────────────────────────────────────────────────── */
.nav-tab, .import-link {
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray-500);
  text-decoration: none;
  padding: 5px 12px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  transition: all 0.15s;
  white-space: nowrap;
  background: var(--white);
}
.nav-tab:hover, .import-link:hover { border-color: var(--blue-600); color: var(--blue-600); }
.nav-tab.active { border-color: var(--blue-600); background: var(--blue-600); color: var(--white); }

/* ── Month nav ───────────────────────────────────────────────── */
.month-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.month-nav select {
  font-family: var(--font);
  font-size: 0.85rem;
  background: var(--white);
  border: 1px solid var(--gray-200);
  padding: 6px 10px;
  border-radius: var(--radius);
  cursor: pointer;
  color: var(--gray-900);
}

.month-nav label {
  font-size: 0.75rem;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ── Weeks pill ──────────────────────────────────────────────── */
.weeks-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--blue-600);
  color: var(--white);
  font-size: 0.72rem;
  padding: 4px 12px;
  border-radius: 20px;
  margin-left: 8px;
}

/* ── Totals bar ──────────────────────────────────────────────── */
.totals-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--gray-200);
  margin-top: 20px;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--shadow);
}

.total-cell {
  padding: 16px 20px;
  border-right: 1px solid var(--gray-200);
}
.total-cell:last-child { border-right: none; }

.total-cell .label {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gray-500);
  margin-bottom: 4px;
}

.total-cell .value {
  font-size: 1.9rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
}

.total-cell .sub { font-size: 0.72rem; color: var(--gray-500); margin-top: 4px; }

.total-cell.surplus .value { color: var(--green-600); }
.total-cell.deficit .value { color: var(--red-600); }
.total-cell.income  .value { color: var(--green-600); }

/* ── NW bar (3 columns) ──────────────────────────────────────── */
.nw-bar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--shadow);
}

.nw-delta { font-size: 0.72rem; margin-top: 4px; }
.nw-delta.up   { color: var(--green-600); }
.nw-delta.down { color: var(--red-600); }
.nw-delta.flat { color: var(--gray-500); }

/* ── Section label ───────────────────────────────────────────── */
.section-label {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--gray-500);
  margin: 32px 0 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--gray-200);
}

/* ── Filter buttons ──────────────────────────────────────────── */
.filter-btn {
  font-family: var(--font);
  font-size: 0.7rem;
  font-weight: 500;
  padding: 4px 12px;
  border: 1px solid var(--gray-200);
  border-radius: 20px;
  background: var(--white);
  color: var(--gray-500);
  cursor: pointer;
  transition: all 0.12s;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  text-decoration: none;
}
.filter-btn:hover,
.filter-btn.active { border-color: var(--blue-600); background: var(--blue-600); color: var(--white); }

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  font-family: var(--font);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 8px 18px;
  border: 1.5px solid var(--blue-600);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.15s;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: var(--blue-600);
  color: var(--white);
  white-space: nowrap;
  align-self: flex-end;
}
.btn:hover:not(:disabled) { background: #1e40af; border-color: #1e40af; }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-ghost {
  background: var(--white);
  color: var(--gray-900);
  border-color: var(--gray-200);
}
.btn-ghost:hover:not(:disabled) { border-color: var(--blue-600); color: var(--blue-600); background: var(--white); }

.btn-sm { padding: 3px 9px; font-size: 0.7rem; }

.btn-danger {
  background: transparent;
  color: var(--red-600);
  border-color: var(--red-600);
}
.btn-danger:hover:not(:disabled) { background: var(--red-600); color: var(--white); }

/* ── Form groups ─────────────────────────────────────────────── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.form-group label {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gray-500);
}

.form-group input,
.form-group select,
.form-group textarea {
  font-family: var(--font);
  font-size: 0.875rem;
  background: var(--white);
  border: 1px solid var(--gray-200);
  padding: 7px 10px;
  border-radius: var(--radius);
  outline: none;
  transition: border-color 0.15s;
  color: var(--gray-900);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--blue-600); box-shadow: 0 0 0 3px var(--blue-100); }

.form-group.desc   { flex: 1; min-width: 200px; }
.form-group.amount { width: 110px; }
.form-group.cat    { width: 170px; }
.form-group.dt     { width: 145px; }

/* ── Form row ────────────────────────────────────────────────── */
.form-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: flex-end;
}

/* ── Add form ────────────────────────────────────────────────── */
.add-form {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 20px 24px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.add-form h2 {
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: 14px;
  color: var(--gray-900);
}

/* ── Inline edit inputs ──────────────────────────────────────── */
.edit-input,
.edit-select {
  font-family: var(--font);
  font-size: 0.82rem;
  background: var(--white);
  border: 1px solid var(--gray-200);
  padding: 3px 6px;
  border-radius: 4px;
  outline: none;
  width: 100%;
  color: var(--gray-900);
}
.edit-input:focus,
.edit-select:focus { border-color: var(--blue-600); }

/* ── Empty state ─────────────────────────────────────────────── */
.empty {
  color: var(--gray-500);
  font-style: italic;
  padding: 24px 0;
  text-align: center;
}

/* ── Back link ───────────────────────────────────────────────── */
.back-link {
  margin-left: auto;
  color: var(--gray-500);
  text-decoration: none;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.back-link:hover { color: var(--gray-900); }

/* ── Success banner ──────────────────────────────────────────── */
.success-banner {
  margin-top: 16px;
  padding: 10px 16px;
  background: #dcfce7;
  border: 1px solid var(--green-600);
  border-radius: var(--radius);
  color: #15803d;
  font-size: 0.82rem;
}

/* ── Charts ──────────────────────────────────────────────────── */
.charts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 8px;
}
@media (max-width: 760px) { .charts-grid { grid-template-columns: 1fr; } }

.chart-wrap {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 20px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.chart-title {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gray-500);
  margin-bottom: 12px;
}

/* ── Balance table ───────────────────────────────────────────── */
.balance-table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.balance-table th {
  font-size: 0.65rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--gray-500); padding: 6px 10px;
  border-bottom: 1px solid var(--gray-200); text-align: left;
}
.balance-table th.num { text-align: right; }
.balance-table td { padding: 9px 10px; border-bottom: 1px solid var(--gray-200); vertical-align: middle; }
.balance-table tr:hover td { background: #f0f7ff; }

.balance-input {
  font-family: var(--font); font-size: 0.88rem;
  background: var(--white); border: 1px solid var(--gray-200);
  padding: 5px 8px; border-radius: var(--radius);
  text-align: right; width: 150px; outline: none; color: var(--gray-900);
}
.balance-input:focus  { border-color: var(--blue-600); }
.balance-input.saving { border-color: var(--amber-600); }
.balance-input.saved  { border-color: var(--green-600); }
.save-status { font-size: 0.65rem; color: var(--gray-500); height: 14px; }

/* ── History table ───────────────────────────────────────────── */
.history-table { width: 100%; border-collapse: collapse; font-size: 0.82rem; }
.history-table th {
  font-size: 0.65rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--gray-500); padding: 6px 10px;
  border-bottom: 1px solid var(--gray-200); text-align: right;
}
.history-table th:first-child { text-align: left; }
.history-table td {
  padding: 7px 10px; border-bottom: 1px solid var(--gray-200);
  text-align: right; font-variant-numeric: tabular-nums;
}
.history-table td:first-child { text-align: left; }
.history-table tr:hover td { background: #f0f7ff; }
.delta-up   { color: var(--green-600); }
.delta-down { color: var(--red-600); }
.delta-none { color: var(--gray-500); }

/* ── Trend indicators ────────────────────────────────────────── */
.trend-up   { color: var(--red-600); }
.trend-down { color: var(--green-600); }
.trend-flat { color: var(--gray-500); }

/* ── Tx table ────────────────────────────────────────────────── */
.tx-table { width: 100%; border-collapse: collapse; font-size: 0.82rem; }
.tx-table th {
  font-size: 0.65rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--gray-500); text-align: left; padding: 6px 10px;
  border-bottom: 1px solid var(--gray-200); white-space: nowrap;
  background: var(--gray-50);
}
.tx-table th.num { text-align: right; }
.tx-table td { padding: 8px 10px; border-bottom: 1px solid var(--gray-200); vertical-align: middle; }
.tx-table td.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.tx-table tr:hover td { background: #f0f7ff; }

/* ── Category badges (pill style) ───────────────────────────── */
.tx-cat {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 2px 8px;
  border-radius: 10px;
  white-space: nowrap;
  text-transform: uppercase;
}

.cat-income        { background: #16a34a22; color: #16a34a; border: 1px solid #16a34a55; }
.cat-save          { background: #16a34a22; color: #16a34a; border: 1px solid #16a34a55; }
.cat-give          { background: #9333ea22; color: #9333ea; border: 1px solid #9333ea55; }
.cat-home          { background: #2563eb22; color: #2563eb; border: 1px solid #2563eb55; }
.cat-car           { background: #ea580c22; color: #ea580c; border: 1px solid #ea580c55; }
.cat-household     { background: #0d948822; color: #0d9488; border: 1px solid #0d948855; }
.cat-recurring     { background: #6b728022; color: #6b7280; border: 1px solid #6b728055; }
.cat-groceries     { background: #d9770622; color: #d97706; border: 1px solid #d9770655; }
.cat-discretionary { background: #db277722; color: #db2777; border: 1px solid #db277755; }
.cat-other         { background: #9ca3af22; color: #9ca3af; border: 1px solid #9ca3af55; }

/* Also provide .badge-* variants for use outside tables */
.badge            { display: inline-block; border-radius: 10px; padding: 2px 8px; font-size: 0.65rem; font-weight: 700; letter-spacing: 0.04em; white-space: nowrap; text-transform: uppercase; }
.badge-save          { background: #16a34a22; color: #16a34a; border: 1px solid #16a34a55; }
.badge-give          { background: #9333ea22; color: #9333ea; border: 1px solid #9333ea55; }
.badge-home          { background: #2563eb22; color: #2563eb; border: 1px solid #2563eb55; }
.badge-car           { background: #ea580c22; color: #ea580c; border: 1px solid #ea580c55; }
.badge-household     { background: #0d948822; color: #0d9488; border: 1px solid #0d948855; }
.badge-recurring     { background: #6b728022; color: #6b7280; border: 1px solid #6b728055; }
.badge-groceries     { background: #d9770622; color: #d97706; border: 1px solid #d9770655; }
.badge-discretionary { background: #db277722; color: #db2777; border: 1px solid #db277755; }
.badge-other         { background: #9ca3af22; color: #9ca3af; border: 1px solid #9ca3af55; }
.badge-income        { background: #16a34a22; color: #16a34a; border: 1px solid #16a34a55; }

/* ── Smart Split modal ───────────────────────────────────────── */
.ss-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,0.4); z-index: 100;
  align-items: center; justify-content: center;
}
.ss-overlay.open { display: flex; }

.ss-modal {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  box-shadow: 0 4px 24px rgba(0,0,0,0.15);
  padding: 28px 32px;
  width: min(540px, 94vw);
  max-height: 85vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.ss-modal h2 { font-size: 1.1rem; font-weight: 600; color: var(--gray-900); }
.ss-modal h2 em { font-style: normal; color: var(--blue-600); }

.ss-drop {
  border: 2px dashed var(--gray-200);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  cursor: pointer;
  font-size: 0.8rem;
  color: var(--gray-500);
  transition: border-color 0.15s;
}
.ss-drop:hover, .ss-drop.dragover { border-color: var(--blue-600); color: var(--blue-600); }
.ss-thumbnails { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; margin-top: 8px; }
.ss-thumbnails img { max-height: 80px; border-radius: 4px; object-fit: cover; }

.ss-results { display: none; flex-direction: column; gap: 8px; }
.ss-results.show { display: flex; }

.ss-split-row {
  display: grid;
  grid-template-columns: 1fr 80px 140px 24px;
  gap: 8px;
  align-items: end;
}

.ss-remove-btn {
  background: none; border: none; color: var(--gray-500); cursor: pointer;
  font-size: 1rem; padding: 0; line-height: 1; align-self: center;
}
.ss-remove-btn:hover { color: var(--red-600); }

.ss-split-row input, .ss-split-row select {
  font-family: var(--font); font-size: 0.8rem;
  background: var(--white); border: 1px solid var(--gray-200);
  padding: 4px 7px; border-radius: 4px; width: 100%; outline: none;
  color: var(--gray-900);
}
.ss-split-row input:focus, .ss-split-row select:focus { border-color: var(--blue-600); }

.ss-reasoning {
  grid-column: 1 / -1;
  font-size: 0.72rem; color: var(--gray-500); font-style: italic;
  padding: 0 0 4px;
}
.ss-cost { font-size: 0.7rem; color: var(--gray-400); }
.ss-balance { font-size: 0.72rem; }
.ss-balance.ok  { color: var(--green-600); }
.ss-balance.bad { color: var(--red-600); }

.ss-footer { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.ss-spinner { display: none; font-size: 0.8rem; color: var(--gray-500); }
.ss-spinner.show { display: inline; }
.ss-error { display: none; font-size: 0.78rem; color: var(--red-600); }
.ss-error.show { display: block; }

/* ── Mobile overrides (must come last to win the cascade) ────── */
@media (max-width: 640px) {
  .page { padding-bottom: calc(72px + max(env(safe-area-inset-bottom, 0px), 20px)); }
  .header-nav { display: none; }
  .logout-btn { display: flex; }
  .bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: calc(60px + max(env(safe-area-inset-bottom, 0px), 20px));
    background: var(--white);
    border-top: 1px solid var(--gray-200);
    display: flex;
    z-index: 100;
    padding-bottom: max(env(safe-area-inset-bottom, 0px), 20px);
    box-shadow: 0 -1px 8px rgba(0,0,0,0.06);
  }

  /* Tables: scroll horizontally instead of forcing layout collapse */
  .tx-table,
  .balance-table,
  .history-table,
  .review-table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* Sticky first column — stays pinned while the rest scrolls */
  .tx-table th:first-child,
  .tx-table td:first-child {
    position: sticky;
    left: 0;
    z-index: 2;
    box-shadow: 2px 0 4px rgba(0,0,0,0.06);
  }
  .tx-table th:first-child { background: var(--gray-50); }
  .tx-table td:first-child { background: var(--white); }
  .tx-table tr:hover td:first-child { background: #f0f7ff; }

  .balance-table th:first-child,
  .balance-table td:first-child,
  .history-table th:first-child,
  .history-table td:first-child {
    position: sticky;
    left: 0;
    z-index: 2;
    background: var(--white);
    box-shadow: 2px 0 4px rgba(0,0,0,0.06);
  }
  .balance-table tr:hover td:first-child,
  .history-table tr:hover td:first-child { background: #f0f7ff; }
}