:root {
  --bg: #f3f5fb;
  --surface: #ffffff;
  --surface-alt: #eef1f9;
  --text: #1f2937;
  --muted: #64748b;
  --primary: #4f46e5;
  --primary-soft: #eef2ff;
  --accent: #f97316;
  --danger: #ef4444;
  --shadow: 0 18px 45px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  min-height: 100%;
  min-width: 0;
  font-family: 'Inter', system-ui, sans-serif;
  background: linear-gradient(180deg, #eef2ff 0%, #f8fafc 100%);
  color: var(--text);
}

body {
  padding: 0;
}

.app-shell {
  max-width: 1160px;
  width: min(1160px, calc(100vw - 40px));
  margin: 20px auto;
  padding: 30px;
  box-sizing: border-box;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  gap: 16px;
}

.app-logo {
  width: 48px;
  height: 48px;
  display: inline-block;
  border-radius: 10px;
}

button, input, select {
  font: inherit;
}



.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 32px;
  padding: 32px;
  border-radius: 32px;
  background: radial-gradient(circle at top left, rgba(79, 70, 229, 0.18), transparent 38%),
    linear-gradient(180deg, #ffffff 0%, #eff2ff 100%);
  box-shadow: var(--shadow);
}

.topbar h1 {
  margin: 0.4rem 0 0.75rem;
  font-size: clamp(2rem, 2.5vw, 2.75rem);
  line-height: 1.05;
}

.eyebrow {
  margin: 0 0 0.5rem;
  color: var(--primary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.8rem;
}

.subtitle {
  margin: 0;
  max-width: 560px;
  color: var(--muted);
  line-height: 1.7;
}

.hero-icon {
  width: 100px;
  height: 100px;
  min-width: 100px;
  border-radius: 28px;
  display: grid;
  place-items: center;
  font-size: 2.9rem;
  background: linear-gradient(180deg, #4f46e5 0%, #c7d2fe 100%);
  color: white;
  box-shadow: 0 18px 50px rgba(79, 70, 229, 0.22);
}

.layout {
  display: grid;
  gap: 24px;
  grid-template-columns: 50% 50%;
}

.table-panel {
  grid-column: 1 / -1;
}

.panel {
  border-radius: 32px;
  background: var(--surface);
  padding: 28px;
  box-shadow: var(--shadow);
}

.panel-header h2 {
  margin: 0 0 10px;
  font-size: 1.5rem;
}

.panel-header p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.form-error {
  margin-bottom: 16px;
  padding: 14px 18px;
  border-radius: 18px;
  background: #fee2e2;
  color: #b91c1c;
  border: 1px solid #fecaca;
}

.expense-form {
  display: grid;
  gap: 18px;
  margin-top: 24px;
}

.expense-form label,
.filters-row label {
  display: grid;
  gap: 10px;
  color: var(--text);
  font-weight: 500;
}

.expense-form input,
.expense-form select,
.filters-row input,
.filters-row select {
  width: 100%;
  padding: 14px 16px;
  border-radius: 18px;
  border: 1px solid #dbe0ef;
  background: var(--surface-alt);
  color: var(--text);
}

.expense-form input:focus,
.expense-form select:focus,
.filters-row input:focus,
.filters-row select:focus {
  outline: none;
  border-color: rgba(79, 70, 229, 0.5);
  box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.08);
}

.primary-btn,
.secondary-btn {
  border: none;
  border-radius: 18px;
  padding: 14px 18px;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.primary-btn {
  background: linear-gradient(135deg, #4f46e5, #4338ca);
  color: white;
  font-weight: 700;
}

.secondary-btn {
  background: #f8fafc;
  color: var(--text);
  box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.08);
}

.primary-btn:hover,
.secondary-btn:hover {
  transform: translateY(-1px);
}

.filters-row {
  display: block;
  margin-top: 18px;
}

.filters-row-top {
  display: grid;
  grid-template-columns: 130px 130px;
  gap: 14px;
}

.filters-row-bottom {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto;
  gap: 14px;
  align-items: end;
  margin-top: 12px;
}

.filters-row-middle {
  display: flex;
  gap: 10px;
  margin-top: 10px;
}

.filters-row label {
  min-width: 0;
}

.filter-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

.filter-actions .primary-btn {
  margin-left: auto;
}

.summary-cards {
  display: grid;
  gap: 16px;
  margin-top: 24px;
  grid-template-columns: 2fr 1fr;
}

.summary-card--total {
  /* larger visual weight for total */
}

.summary-card--count {
  /* keep default size for count */
}

.chart-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 28px;
}

.chart-card {
  border-radius: 28px;
  padding: 16px;
  background: #f8fbff;
  border: 1px solid #e2e8f0;
}

.chart-card h3 {
  margin: 0 0 16px;
  font-size: 1rem;
  color: var(--text);
}

.chart-card canvas {
  width: 100%;
  min-height: 120px;
  max-height: 160px;
}

.summary-card {
  border-radius: 26px;
  padding: 22px;
  background: linear-gradient(180deg, #ffffff 0%, #eef2ff 100%);
  border: 1px solid #e0e7ff;
}

.summary-card p {
  margin: 0 0 0.75rem;
  color: var(--muted);
}

.summary-card strong {
  font-size: 1.5rem;
  display: block;
}

.table-wrapper {
  margin-top: 22px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 100%;
}

th, td {
  text-align: left;
  padding: 16px 18px;
  border-bottom: 1px solid #e2e8f0;
}

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

tbody tr:last-child td {
  border-bottom: none;
}

.expense-row {
  transition: transform 0.2s ease;
}

.expense-row:hover {
  transform: translateX(2px);
}

.category-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 0.95rem;
  background: var(--surface-alt);
}

.category-pill span.icon {
  display: inline-flex;
  width: 1.45rem;
  height: 1.45rem;
  align-items: center;
  justify-content: center;
}

.delete-btn {
  background: transparent;
  border: none;
  color: var(--danger);
  font-weight: 700;
  cursor: pointer;
}

@media (max-width: 960px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .filters-row-top,
  .filters-row-bottom {
    grid-template-columns: 1fr;
  }

  .chart-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  body {
    padding: 16px;
  }

  .app-shell {
    padding: 20px;
  }

  .filters-row-top,
  .filters-row-bottom {
    grid-template-columns: 1fr;
  }

  .filters-row-middle {
    flex-direction: column;
    align-items: stretch;
  }

  .filters-row-middle a,
  .filter-actions .primary-btn {
    width: 100%;
  }

  .filters-row-middle a {
    justify-content: center;
  }

  .topbar {
    flex-direction: column;
    padding: 28px;
  }

  .filters-row {
    grid-template-columns: 1fr;
  }

  .summary-cards {
    grid-template-columns: 1fr;
  }

  .hero-icon {
    width: 80px;
    height: 80px;
    font-size: 2.2rem;
  }

  table {
    min-width: unset;
  }
}