* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

:root {
  --bg-body: #0b1219;
  --bg-app: #121c28;
  --bg-card: #182534;
  --bg-form: #142130;
  --bg-table: #162332;
  --bg-hover: #1e2e42;
  --bg-input: #1e2e42;
  --bg-badge: #1e2e42;
  --bg-category: #1e3a5f;

  --border: #24344a;
  --border-input: #2e4258;

  --text-primary: #e8eef7;
  --text-secondary: #9bb0cc;
  --text-muted: #6b8299;
  --text-label: #8ba0bc;

  --accent: #4d9aff;
  --accent-hover: #6aabff;

  --income: #3fd68a;
  --expense: #ff6b5e;

  --shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

body {
  min-height: 100vh;
  padding: 20px;
  background: var(--bg-body);
  color: var(--text-primary);
}

.app-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px;
  background: var(--bg-app);
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}

.header h1 {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  font-size: 30px;
  font-weight: 600;
}

.header h1 i {
  color: var(--accent);
}

.summary-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 30px;
}

.card {
  padding: 22px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
  transition: 0.2s ease;
}

.card:hover {
  border-color: var(--accent);
}

.card-label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
}

.card-label i {
  color: var(--accent);
}

.card-value {
  color: var(--text-primary);
  font-size: 32px;
  font-weight: 700;
}

.card-value.income {
  color: var(--income);
}

.card-value.expense {
  color: var(--expense);
}

.form-section {
  margin-bottom: 28px;
  padding: 24px;
  background: var(--bg-form);
  border: 1px solid var(--border);
  border-radius: 24px;
}

.form-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  color: var(--text-primary);
  font-size: 19px;
  font-weight: 600;
}

.form-title i {
  color: var(--accent);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr 1fr 1fr 1fr auto;
  gap: 14px;
  align-items: end;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.input-group label {
  color: var(--text-label);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
}

.input-group input,
.input-group select,
.filter-group select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border-input);
  border-radius: 12px;
  outline: none;
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 15px;
}

.input-group input:focus,
.input-group select:focus,
.filter-group select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(77, 154, 255, 0.15);
}

.input-group input::placeholder {
  color: var(--text-muted);
}

input[type="date"]::-webkit-calendar-picker-indicator {
  filter: invert(0.8);
  cursor: pointer;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: 12px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
  transition: 0.15s ease;
}

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

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-outline {
  border-color: var(--border-input);
  background: transparent;
  color: var(--text-secondary);
}

.btn-outline:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.cancel-wrapper {
  display: flex;
  justify-content: flex-end;
  margin-top: 12px;
}

#cancelEditBtn {
  display: none;
}

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

.filter-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.filter-group label {
  color: var(--text-label);
  font-size: 14px;
  font-weight: 500;
}

.filter-group select {
  width: auto;
  min-width: 170px;
}

.badge {
  padding: 7px 15px;
  border-radius: 30px;
  background: var(--bg-badge);
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 500;
}

.transactions-container {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--bg-card);
}

.table-header,
.transaction-item {
  display: grid;
  grid-template-columns: 100px 1.5fr 1.2fr 1fr 0.8fr 1fr;
  align-items: center;
}

.table-header {
  padding: 15px 18px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-table);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
}

.amount-header,
.actions-header {
  text-align: right;
}

.transaction-item {
  padding: 15px 18px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 15px;
  transition: 0.15s ease;
}

.transaction-item:last-child {
  border-bottom: none;
}

.transaction-item:hover {
  background: var(--bg-hover);
}

.transaction-date {
  color: var(--text-secondary);
  font-size: 13px;
}

.transaction-desc {
  overflow: hidden;
  color: var(--text-primary);
  font-weight: 500;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.transaction-category {
  width: fit-content;
  padding: 5px 11px;
  border-radius: 30px;
  background: var(--bg-category);
  color: #8ec2ff;
  font-size: 12px;
  font-weight: 500;
}

.transaction-amount {
  padding-right: 8px;
  text-align: right;
  font-weight: 600;
}

.transaction-amount.income {
  color: var(--income);
}

.transaction-amount.expense {
  color: var(--expense);
}

.transaction-type {
  color: var(--text-secondary);
  font-weight: 500;
  text-transform: capitalize;
}

.transaction-actions {
  display: flex;
  justify-content: flex-end;
  gap: 4px;
}

.btn-icon {
  width: 38px;
  height: 38px;
  border: none;
  border-radius: 9px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 15px;
  transition: 0.15s ease;
}

.btn-icon:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.btn-icon.delete:hover {
  background: #3a2222;
  color: var(--expense);
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 50px 20px;
  color: var(--text-muted);
  text-align: center;
}

.empty-state i {
  color: #3a4a60;
  font-size: 40px;
}

.empty-state p {
  color: var(--text-secondary);
  font-size: 17px;
}

.empty-state span {
  font-size: 14px;
}

@media (max-width: 1050px) {
  .form-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .form-grid .btn-primary {
    grid-column: span 3;
  }
}

@media (max-width: 850px) {
  .summary-cards {
    grid-template-columns: 1fr;
  }

  .table-header {
    display: none;
  }

  .transaction-item {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 10px;
    padding: 18px;
  }

  .transaction-date {
    grid-column: 1;
  }

  .transaction-desc {
    grid-column: 2 / 4;
  }

  .transaction-category {
    grid-column: 1 / 3;
  }

  .transaction-amount {
    grid-column: 3;
  }

  .transaction-type {
    display: none;
  }

  .transaction-actions {
    grid-column: 1 / 4;
  }

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

  .filter-group {
    justify-content: space-between;
  }
}

@media (max-width: 600px) {
  body {
    padding: 10px;
  }

  .app-container {
    padding: 18px;
    border-radius: 20px;
  }

  .header h1 {
    font-size: 24px;
  }

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

  .form-grid .btn-primary {
    grid-column: span 1;
  }

  .filter-group {
    flex-wrap: wrap;
  }

  .filter-group select {
    flex: 1;
  }

  .transaction-item {
    grid-template-columns: 1fr 1fr;
  }

  .transaction-date {
    grid-column: 1;
  }

  .transaction-desc {
    grid-column: 1 / 3;
    grid-row: 2;
  }

  .transaction-category {
    grid-column: 1;
    grid-row: 3;
  }

  .transaction-amount {
    grid-column: 2;
    grid-row: 3;
  }

  .transaction-actions {
    grid-column: 1 / 3;
    grid-row: 4;
  }

  .card-value {
    font-size: 28px;
  }
}