/* ── main.css — layout, typography, sidebar, navigation ── */

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

html, body { overflow-x: hidden; max-width: 100vw; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  transition: background 0.2s, color 0.2s;
}

/* ── Sidebar ── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0;
  height: 100vh;
  z-index: 100;
  transition: background 0.2s, border 0.2s;
}

.sidebar-logo {
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--border);
}

.logo-text {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.3px;
}

.logo-sub {
  font-size: 11px;
  color: var(--text3);
  margin-top: 2px;
}

.sidebar-nav {
  flex: 1;
  padding: 12px 10px;
  overflow-y: auto;
}

.nav-section {
  font-size: 10px;
  font-weight: 600;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  padding: 8px 10px 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 14px;
  color: var(--text2);
  transition: all 0.15s;
  margin-bottom: 2px;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.nav-item:hover { background: var(--surface2); color: var(--text); }
.nav-item.active { background: var(--blue-bg); color: var(--blue); font-weight: 500; }

.nav-icon { font-size: 16px; width: 20px; text-align: center; }

.sidebar-bottom {
  padding: 12px 10px;
  border-top: 1px solid var(--border);
}

.theme-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 14px;
  color: var(--text2);
  background: none;
  border: none;
  width: 100%;
  transition: all 0.15s;
}
.theme-toggle:hover { background: var(--surface2); color: var(--text); }

/* ── Main content ── */
.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-height: 100vh;
}

.page {
  display: none;
  padding: 28px 32px;
  max-width: 1100px;
}

.page.active { display: block; }

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.page-title {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.4px;
}

.page-sub {
  font-size: 13px;
  color: var(--text2);
  margin-top: 3px;
}

/* ── Metric cards ── */
.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-bottom: 24px;
}

.metric-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow);
}

.metric-label {
  font-size: 12px;
  color: var(--text3);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.metric-val {
  font-size: 26px;
  font-weight: 600;
  letter-spacing: -0.5px;
}

.metric-val.green { color: var(--green); }
.metric-val.red   { color: var(--red); }
.metric-val.blue  { color: var(--blue); }

.metric-change {
  font-size: 12px;
  color: var(--text3);
  margin-top: 4px;
}

/* ── Charts grid ── */
.charts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-bottom: 24px;
}

.chart-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}

.chart-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
}

.chart-sub {
  font-size: 12px;
  color: var(--text3);
  margin-bottom: 16px;
}

/* ── Section heading ── */
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.section-title { font-size: 15px; font-weight: 600; }

/* ── Legend ── */
.legend { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 12px; }
.legend-item { display: flex; align-items: center; gap: 5px; font-size: 12px; color: var(--text2); }
.legend-dot { width: 10px; height: 10px; border-radius: 2px; flex-shrink: 0; }

/* ── Loading ── */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  color: var(--text3);
  font-size: 14px;
  gap: 10px;
}

.spinner {
  width: 18px; height: 18px;
  border: 2px solid var(--border2);
  border-top-color: var(--blue);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Empty state ── */
.empty { text-align: center; padding: 48px 20px; color: var(--text3); }
.empty-icon { font-size: 36px; margin-bottom: 12px; }
.empty-text { font-size: 14px; }

/* ── Toast ── */
.toast {
  position: fixed;
  bottom: 24px; right: 24px;
  background: var(--text);
  color: var(--bg);
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  z-index: 9999;
  opacity: 0;
  transform: translateY(8px);
  transition: all 0.2s;
  pointer-events: none;
}
.toast.show { opacity: 1; transform: translateY(0); }

/* ── Savings bar ── */
.savings-bar-wrap { margin-top: 10px; }
.savings-bar-bg { background: var(--surface2); border-radius: 99px; height: 8px; overflow: hidden; }
.savings-bar-fill { height: 100%; border-radius: 99px; background: var(--green); transition: width 0.5s; }
.savings-bar-label { display: flex; justify-content: space-between; font-size: 12px; color: var(--text3); margin-top: 5px; }

/* ── Budget bars ── */
.budget-bar-row { margin-bottom: 14px; }
.budget-bar-info { display: flex; justify-content: space-between; font-size: 13px; margin-bottom: 5px; }
.budget-bar-name { font-weight: 500; color: var(--text); display: flex; align-items: center; gap: 6px; }
.budget-bar-amt { color: var(--text2); font-size: 12px; }
.budget-bar-bg { background: var(--surface2); border-radius: 99px; height: 6px; overflow: hidden; }
.budget-bar-fill { height: 100%; border-radius: 99px; transition: width 0.4s cubic-bezier(.4,0,.2,1); }

/* ── Upcoming / recent items ── */
.upcoming-item { display: flex; align-items: center; gap: 12px; padding: 11px 0; border-bottom: 1px solid var(--border); }
.upcoming-item:last-child { border-bottom: none; }
.upcoming-icon { width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 16px; flex-shrink: 0; }
.upcoming-info { flex: 1; }
.upcoming-name { font-size: 14px; font-weight: 500; }
.upcoming-date { font-size: 12px; color: var(--text3); margin-top: 1px; }
.upcoming-amt { font-size: 15px; font-weight: 600; color: var(--red); }

/* ── Analytics big stats ── */
.stats-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 24px; }
.big-stat { font-size: 32px; font-weight: 700; letter-spacing: -1px; }
.big-stat-label { font-size: 13px; color: var(--text2); margin-top: 4px; }

/* ── Tablet (max 900px) ── */
@media (max-width: 900px) {
  .sidebar { width: 64px; }
  .sidebar .logo-text,
  .sidebar .logo-sub,
  .sidebar .nav-item span,
  .sidebar .nav-section,
  .sidebar-bottom span { display: none; }
  .main { margin-left: 64px; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .charts-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: 1fr 1fr; }
  .page { padding: 20px; }
}

/* ── Mobile top header ── */
.mobile-header {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 52px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 16px;
  align-items: center;
  justify-content: space-between;
  z-index: 150;
  box-shadow: 0 1px 8px rgba(0,0,0,0.06);
}

.mobile-header-logo {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}

.mobile-theme-btn {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  font-size: 16px;
  cursor: pointer;
  transition: all 0.15s;
}
.mobile-theme-btn:hover { background: var(--surface3); }

.mobile-signout-btn {
  background: var(--red-bg);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  font-size: 16px;
  cursor: pointer;
  transition: all 0.15s;
}
.mobile-signout-btn:hover { opacity: 0.85; }

@media (max-width: 640px) {
  .mobile-header { display: flex; }
  .main { padding-top: 52px; }
}

/* ── Mobile (max 640px) — full mobile experience ── */
@media (max-width: 640px) {

  /* Hide desktop sidebar completely */
  .sidebar { display: none; }

  /* Full width main, add bottom padding for nav bar */
  .main {
    margin-left: 0;
    padding-bottom: 72px;
  }

  .page { padding: 16px; }

  /* Page header stacks on mobile */
  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .page-header > div:last-child { width: 100%; }
  .page-header .btn,
  .page-header select { width: 100%; justify-content: center; }

  /* Metric cards — 2 columns on mobile */
  .metric-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .metric-val { font-size: 20px; }

  /* Charts — single column */
  .charts-grid { grid-template-columns: 1fr; gap: 12px; }

  /* Dashboard bottom two panels stack */
  #page-dashboard > div:last-child { grid-template-columns: 1fr !important; gap: 12px; }

  /* Recurring panels stack */
  #page-recurring > div:last-child { grid-template-columns: 1fr !important; gap: 12px; }

  /* Categories panels stack */
  #page-categories > div:last-child { grid-template-columns: 1fr !important; gap: 12px; }

  /* Analytics stats row */
  .stats-row { grid-template-columns: 1fr; gap: 10px; }
  .big-stat { font-size: 26px; }

  /* Tables → scrollable with fixed min width */
  .table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  table { min-width: 560px; }

  /* Cards */
  .card { padding: 14px; }
  .chart-card { padding: 14px; }

  /* Filter bar stacks */
  .filter-bar { flex-direction: column; }
  .filter-bar .form-input,
  .filter-bar .search-input { width: 100%; min-width: unset; }

  /* Recurring grid single column */
  .recurring-grid { grid-template-columns: 1fr; }

  /* Metric grid 3-col override → 2 col */
  .metric-grid[style*="repeat(3"] { grid-template-columns: 1fr 1fr !important; }
}

/* ── Mobile bottom navigation bar ── */
.mobile-nav {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 8px 0 12px;
  z-index: 200;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.08);
}

.mobile-nav-items {
  display: flex;
  justify-content: space-around;
  align-items: center;
}

.mobile-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: none;
  background: none;
  color: var(--text3);
  font-size: 10px;
  font-weight: 500;
  transition: all 0.15s;
  min-width: 56px;
}

.mobile-nav-item .nav-icon { font-size: 20px; }
.mobile-nav-item.active { color: var(--blue); }
.mobile-nav-item.active .nav-icon { transform: scale(1.1); }

@media (max-width: 640px) {
  .mobile-nav { display: block; }
}