:root {
  --color-bg: #daf1de;
  --color-surface: #c1e8ff;
  --color-primary: #235347;
  --color-primary-light: #2d6b5a;
  --color-secondary: #7da0ca;
  --color-accent: #8eb69b;
  --color-text: #16332b;
  --color-text-light: #4c6b62;
  --color-white: #ffffff;
  --color-shadow: rgba(35, 83, 71, 0.15);
  --color-shadow-strong: rgba(35, 83, 71, 0.25);
  --radius-lg: 20px;
  --radius-md: 16px;
  --radius-sm: 12px;
}

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

body {
  font-family: "Inter", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  padding-bottom: 100px;
  -webkit-tap-highlight-color: transparent;
}

button,
input,
textarea,
select {
  font: inherit;
  border: none;
  outline: none;
}

#app {
  max-width: 480px;
  margin: 0 auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ===== HEADER ===== */
.app-header {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: var(--color-white);
  padding: 22px 20px 18px;
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 24px var(--color-shadow-strong);
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.app-header h1 {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.3px;
}

.header-actions {
  display: flex;
  gap: 8px;
}

.header-icon-btn {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  cursor: pointer;
  transition: background 0.2s ease;
}

.header-icon-btn:active {
  background: rgba(255, 255, 255, 0.3);
}

.app-subtitle {
  font-size: 0.88rem;
  opacity: 0.9;
  margin-top: 6px;
  font-weight: 400;
}

/* ===== SUMMARY CARD ===== */
.summary-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: 0 6px 18px var(--color-shadow);
  border: 1px solid rgba(142, 182, 155, 0.3);
}

.summary-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
}

.summary-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.summary-label {
  font-size: 0.82rem;
  color: var(--color-text-light);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.summary-total {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--color-primary);
}

.summary-divider {
  width: 1px;
  height: 45px;
  background: var(--color-accent);
  opacity: 0.5;
}

/* ===== SOURCE SECTION ===== */
.source-section {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 18px 16px;
  box-shadow: 0 6px 18px var(--color-shadow);
  border: 1px solid rgba(142, 182, 155, 0.3);
}

.source-section h2,
.recent-section h2 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 14px;
}

.source-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.source-card {
  background: linear-gradient(145deg, var(--color-surface), #d4eeff);
  border: 2px solid transparent;
  color: var(--color-primary);
  padding: 16px 12px;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  transition: transform 0.15s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 3px 10px rgba(125, 160, 202, 0.15);
}

.source-card:active {
  transform: scale(0.96);
  border-color: var(--color-secondary);
  box-shadow: 0 2px 8px rgba(125, 160, 202, 0.3);
}

.source-icon {
  font-size: 1.6rem;
}

.source-name {
  font-size: 0.88rem;
  font-weight: 600;
}

.source-total {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-light);
}

/* ===== RECENT SECTION ===== */
.recent-section {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 18px 16px;
  box-shadow: 0 6px 18px var(--color-shadow);
  border: 1px solid rgba(142, 182, 155, 0.3);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.section-header h2 {
  margin-bottom: 0;
}

.view-all-btn {
  background: none;
  color: var(--color-secondary);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 8px;
  transition: background 0.2s ease;
}

.view-all-btn:active {
  background: rgba(125, 160, 202, 0.15);
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 30px 10px;
  gap: 6px;
}

.empty-icon {
  font-size: 2.2rem;
  margin-bottom: 4px;
}

.empty-state p {
  font-size: 0.95rem;
  color: var(--color-text-light);
  font-weight: 500;
}

.empty-hint {
  font-size: 0.82rem !important;
  opacity: 0.7;
}

/* ===== FAB BUTTON ===== */
.fab {
  position: fixed;
  bottom: 28px;
  right: 24px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: var(--color-white);
  font-size: 2rem;
  font-weight: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 6px 20px var(--color-shadow-strong);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  z-index: 100;
}

.fab:active {
  transform: scale(0.92);
  box-shadow: 0 4px 14px var(--color-shadow);
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.app-header { animation: fadeInUp 0.4s ease; }
.summary-card { animation: fadeInUp 0.45s ease; }
.source-section { animation: fadeInUp 0.5s ease; }
.recent-section { animation: fadeInUp 0.55s ease; }
.fab { animation: fadeInUp 0.6s ease; }

/* ===== MODAL ===== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(22, 51, 43, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 16px;
  animation: fadeIn 0.2s ease;
}

.modal-box {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 400px;
  box-shadow: 0 12px 40px var(--color-shadow-strong);
  animation: slideUp 0.3s ease;
  overflow: hidden;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: var(--color-white);
}

.modal-header h2 {
  font-size: 1.15rem;
  font-weight: 700;
}

.modal-close {
  background: rgba(255, 255, 255, 0.2);
  color: var(--color-white);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease;
}

.modal-close:active {
  background: rgba(255, 255, 255, 0.35);
}

.modal-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.modal-section-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.settings-field {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.settings-field label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-light);
}

.settings-field input {
  background: var(--color-bg);
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  transition: border-color 0.2s ease;
}

.settings-field input:focus {
  border-color: var(--color-secondary);
}

.modal-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(142, 182, 155, 0.25);
}

.btn-save {
  width: 100%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: var(--color-white);
  padding: 14px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s ease;
}

.btn-save:active {
  transform: scale(0.97);
}

/* ===== FORM FIELDS ===== */
.modal-tall .modal-body {
  max-height: 65vh;
  overflow-y: auto;
}

.modal-scroll {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-field label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-light);
}

.form-field select,
.form-field input {
  background: var(--color-bg);
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  transition: border-color 0.2s ease;
  width: 100%;
}

.form-field select:focus,
.form-field input:focus {
  border-color: var(--color-secondary);
}

.category-grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.category-btn {
  background: var(--color-bg);
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  text-align: left;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.category-btn.chip-active {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.chip-container {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  background: var(--color-surface);
  border: 2px solid transparent;
  border-radius: 20px;
  padding: 8px 14px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-primary);
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.chip:active {
  transform: scale(0.95);
}

.chip.chip-active {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

/* ===== TRANSACTION LIST ITEMS ===== */
.txn-item {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 14px 0;
  border-bottom: 1px solid rgba(142, 182, 155, 0.2);
}

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

.txn-item.txn-matched {
  opacity: 0.5;
}

.txn-left {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  flex: 1;
}

.txn-category-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-top: 5px;
  flex-shrink: 0;
}

.txn-details {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.txn-items {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-text);
}

.txn-meta {
  font-size: 0.78rem;
  color: var(--color-text-light);
}

.txn-right {
  flex-shrink: 0;
  margin-left: 10px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.txn-amount {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
}

.txn-actions {
  display: flex;
  gap: 4px;
  margin-top: 6px;
  justify-content: flex-end;
}

/* ===== SETTINGS EDITABLE LISTS ===== */
.settings-divider {
  height: 1px;
  background: rgba(142, 182, 155, 0.3);
  margin: 6px 0;
}

.editable-item {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 8px;
}

.editable-item input {
  flex: 1;
  background: var(--color-bg);
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  transition: border-color 0.2s ease;
}

.editable-item input:focus {
  border-color: var(--color-secondary);
}

.remove-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #f5e0e0;
  color: #c0392b;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.2s ease;
}

.remove-btn:active {
  background: #e8c4c4;
}

.add-new-row {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-top: 4px;
}

.add-new-row input {
  flex: 1;
  background: var(--color-bg);
  border: 2px dashed var(--color-accent);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  transition: border-color 0.2s ease;
}

.add-new-row input:focus {
  border-color: var(--color-secondary);
}

.add-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 1.3rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform 0.15s ease;
}

.add-btn:active {
  transform: scale(0.92);
}

/* ===== SCREEN TOGGLE ===== */
.screen-hidden {
  display: none;
}

/* ===== BACK BUTTON ===== */
.back-btn {
  background: rgba(255, 255, 255, 0.15);
  color: var(--color-white);
  padding: 6px 14px;
  border-radius: 10px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease;
}

.back-btn:active {
  background: rgba(255, 255, 255, 0.3);
}

/* ===== FILTER SECTION ===== */
.filter-section {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 16px;
  box-shadow: 0 6px 18px var(--color-shadow);
  border: 1px solid rgba(142, 182, 155, 0.3);
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 16px;
}

.filter-row {
  display: flex;
  gap: 10px;
}

.filter-field {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.filter-field label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.filter-field select {
  background: var(--color-bg);
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text);
  cursor: pointer;
  width: 100%;
}

.filter-field select:focus {
  border-color: var(--color-secondary);
}

/* ===== ALL TXN SUMMARY ===== */
.all-txn-summary {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 16px;
  box-shadow: 0 6px 18px var(--color-shadow);
  border: 1px solid rgba(142, 182, 155, 0.3);
  margin-top: 12px;
}

.all-txn-summary .summary-total {
  font-size: 1.3rem;
}

.summary-warn {
  color: #c0392b !important;
}

/* ===== TXN LIST SECTION ===== */
.txn-list-section {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 16px;
  box-shadow: 0 6px 18px var(--color-shadow);
  border: 1px solid rgba(142, 182, 155, 0.3);
  margin-top: 12px;
}

/* ===== TXN ITEM WITH CHECKBOX ===== */
.txn-item-full {
  display: flex;
  align-items: flex-start;
  padding: 14px 0;
  border-bottom: 1px solid rgba(142, 182, 155, 0.2);
  gap: 10px;
}

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

.txn-item-full.txn-matched-full {
  opacity: 0.45;
}

.txn-checkbox {
  margin-top: 4px;
  width: 20px;
  height: 20px;
  accent-color: var(--color-primary);
  cursor: pointer;
  flex-shrink: 0;
}

.txn-content {
  flex: 1;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

/* ===== ACTION BUTTONS ===== */
.delete-btn,
.edit-btn,
.wa-btn {
  background: none;
  border: none;
  font-size: 1.1rem;
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 8px;
  transition: background 0.2s ease, transform 0.15s ease;
}

.delete-btn:active {
  background: #f5e0e0;
  transform: scale(0.9);
}

.edit-btn:active {
  background: #e0ecf5;
  transform: scale(0.9);
}

.wa-btn:active {
  background: #d4edda;
  transform: scale(0.9);
}

/* ===== SUMMARY MODAL ===== */
.summary-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  max-height: 70vh;
  overflow-y: auto;
}

.summary-block {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 16px;
  border: 1px solid rgba(142, 182, 155, 0.3);
}

.summary-block-title {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.4px;
  margin-bottom: 12px;
}

.summary-line {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid rgba(142, 182, 155, 0.15);
}

.summary-line:last-child {
  border-bottom: none;
}

.summary-line-label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
}

.summary-line-value {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-primary);
}

.summary-line-total {
  border-top: 2px solid var(--color-accent);
  margin-top: 4px;
  padding-top: 10px;
}

.summary-line-total .summary-line-label {
  font-weight: 700;
}

.summary-line-total .summary-line-value {
  font-size: 1.1rem;
  font-weight: 800;
}

.summary-line-owe {
  color: #c0392b !important;
}

.summary-month-select {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 4px;
}

.summary-month-select label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-light);
}

.summary-month-select select {
  flex: 1;
  background: var(--color-white);
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
}

/* ===== BACKUP SECTION ===== */
.backup-section {
  padding: 16px 20px 4px;
}

.backup-divider {
  height: 1px;
  background: rgba(142, 182, 155, 0.3);
  margin-bottom: 14px;
}

.backup-buttons {
  display: flex;
  gap: 10px;
  margin-top: 10px;
}

.backup-btn {
  flex: 1;
  padding: 12px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  transition: transform 0.15s ease;
}

.backup-btn:active {
  transform: scale(0.96);
}

.export-btn {
  background: var(--color-surface);
  color: var(--color-primary);
  border: 2px solid var(--color-accent);
}

.import-btn {
  background: var(--color-bg);
  color: var(--color-text);
  border: 2px solid var(--color-accent);
}

/* ===== SOURCE SETTINGS ===== */
.source-edit-item {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 10px;
  padding: 12px;
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(142, 182, 155, 0.3);
}

.source-edit-item .source-emoji-picker {
  width: 100%;
}

.source-edit-item .source-name-input {
  flex: 1;
  min-width: 0;
}

.source-emoji-picker {
  display: flex;
  gap: 4px;
}

.emoji-option {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--color-white);
  border: 2px solid transparent;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.2s ease;
}

.emoji-option.emoji-active {
  border-color: var(--color-primary);
  background: var(--color-surface);
}

.emoji-option:active {
  transform: scale(0.9);
}

.source-name-input {
  flex: 1;
  background: var(--color-white);
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
}

.source-name-input:focus {
  border-color: var(--color-secondary);
}

/* ===== MODE CHIPS ===== */
.mode-grid {
  display: flex;
  gap: 8px;
}

.mode-btn {
  flex: 1;
  background: var(--color-bg);
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: 10px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  text-align: center;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.mode-btn.chip-active {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

@media (min-width: 640px) {
  #app {
    padding: 24px;
  }
}