/* === Custom Properties === */
:root {
  --bg-primary: #0f1117;
  --bg-secondary: #1a1d27;
  --bg-card: #222632;
  --bg-input: #2a2e3b;
  --text-primary: #e8e9ed;
  --text-secondary: #9ca0ad;
  --accent: #6c5ce7;
  --accent-hover: #7e70f0;
  --green: #00b894;
  --green-dim: rgba(0, 184, 148, 0.15);
  --red: #e17055;
  --red-dim: rgba(225, 112, 85, 0.15);
  --blue: #74b9ff;
  --border: #2d3140;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  --transition: 0.2s ease;
  --topbar-h: 52px;
}

/* === Light Theme === */
[data-theme="light"] {
  --bg-primary: #f4f5f7;
  --bg-secondary: #ffffff;
  --bg-card: #f0f1f4;
  --bg-input: #e8e9ed;
  --text-primary: #1a1d27;
  --text-secondary: #5a5e6b;
  --accent: #6c5ce7;
  --accent-hover: #5a4bd6;
  --green: #00a381;
  --green-dim: rgba(0, 163, 129, 0.12);
  --red: #d35400;
  --red-dim: rgba(211, 84, 0, 0.12);
  --blue: #2e86de;
  --border: #d5d8de;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
}

/* === PIN Page === */
.pin-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.pin-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 3rem 2.5rem;
  text-align: center;
  width: 100%;
  max-width: 360px;
  box-shadow: var(--shadow);
}

.pin-logo {
  width: 80px;
  height: 80px;
  margin-bottom: 1rem;
}

.logo {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-bottom: 0.25rem;
}

.logo span {
  color: var(--accent);
  font-weight: 400;
}

.pin-subtitle {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: 2rem;
}

#pin-input {
  display: block;
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 1.5rem;
  text-align: center;
  letter-spacing: 0.5em;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  margin-bottom: 1rem;
  outline: none;
  transition: border-color var(--transition);
}

#pin-input:focus {
  border-color: var(--accent);
}

/* === Buttons === */
.btn {
  display: inline-block;
  padding: 0.6rem 1.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition), opacity var(--transition);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  width: 100%;
}

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

.btn-secondary {
  background: var(--bg-input);
  color: var(--text-primary);
}

.btn-secondary:hover {
  opacity: 0.8;
}

.btn-danger {
  background: var(--red);
  color: #fff;
  padding: 0.3rem 0.6rem;
  font-size: 0.75rem;
}

.btn-danger:hover {
  opacity: 0.85;
}

.btn-edit {
  background: var(--bg-input);
  color: var(--text-secondary);
  padding: 0.3rem 0.6rem;
  font-size: 0.75rem;
}

.btn-edit:hover {
  color: var(--text-primary);
}

.btn-theme {
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-size: 1rem;
  padding: 0.25rem 0.55rem;
  line-height: 1;
}

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

.btn-logout {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  font-size: 0.75rem;
  padding: 0.35rem 0.75rem;
}

.btn-logout:hover {
  color: var(--red);
  border-color: var(--red);
}

/* === Utility === */
.hidden { display: none !important; }
.error { color: var(--red); font-size: 0.85rem; margin-top: 0.5rem; }

/* ============================================
   TOPBAR
   ============================================ */
.topbar {
  height: var(--topbar-h);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 1.25rem;
  gap: 1.25rem;
}

.topbar-logo {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.topbar-title {
  font-size: 1rem;
  font-weight: 600;
  white-space: nowrap;
}

/* Topbar tabs */
.topbar-tabs {
  display: flex;
  gap: 0.25rem;
}

.tab-btn {
  padding: 0.3rem 0.8rem;
  font-size: 0.78rem;
  font-weight: 600;
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
}

.tab-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.tab-btn:hover:not(.active) {
  color: var(--text-primary);
  border-color: var(--border);
}

.tab-section {
  /* needed so .hidden works on these wrappers */
}

.topbar-balance {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.topbar-balance .balance-label {
  font-size: 0.7rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.balance-amount {
  font-size: 1.15rem;
  font-weight: 700;
}

.balance-positive { color: var(--green); }
.balance-negative { color: var(--red); }

/* ============================================
   TWO-COLUMN LAYOUT
   ============================================ */
.columns {
  display: flex;
  height: calc(100vh - var(--topbar-h));
  overflow: hidden;
}

.column {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: flex var(--transition);
}

.column-ledger {
  flex: 4;
  min-width: 0;
  background: var(--bg-secondary);
}

.column-data {
  flex: 6;
  min-width: 0;
  background: var(--bg-primary);
}

/* --- Maximize states --- */
.columns.ledger-max .column-ledger { flex: 8; }
.columns.ledger-max .column-data   { flex: 2; min-width: 180px; }

.columns.data-max .column-data   { flex: 8; }
.columns.data-max .column-ledger { flex: 2; min-width: 180px; }

/* Column header bar */
.column-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.column-header h2 {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

.col-toggle {
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  width: 26px;
  height: 26px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.65rem;
  transition: all var(--transition);
  flex-shrink: 0;
}

.col-toggle:hover {
  color: var(--text-primary);
  border-color: var(--accent);
}

/* Flip arrows when maximized */
.columns.ledger-max #toggle-ledger .arrow-icon { display: inline-block; transform: rotate(180deg); }
.columns.data-max #toggle-data .arrow-icon     { display: inline-block; transform: rotate(180deg); }

/* Column body — scrollable area */
.column-body {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 1rem;
  min-width: 0;
}

/* --- Divider / drag handle --- */
.col-divider {
  width: 5px;
  cursor: col-resize;
  background: var(--border);
  flex-shrink: 0;
  transition: background var(--transition);
}

.col-divider:hover,
.col-divider.dragging {
  background: var(--accent);
}

/* ============================================
   LEDGER
   ============================================ */
.ledger-entry {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.65rem 0.5rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.82rem;
  cursor: pointer;
  transition: background var(--transition);
  border-radius: var(--radius);
  margin-bottom: 2px;
}

.ledger-entry:hover {
  background: var(--bg-card);
}

.ledger-entry .entry-type {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 5px;
}

.type-topup { background: var(--blue); }
.type-expense { background: var(--red); }
.type-income { background: var(--green); }

.entry-info {
  flex: 1;
  min-width: 0;
}

.entry-desc {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: 500;
}

.entry-meta {
  color: var(--text-secondary);
  font-size: 0.72rem;
  margin-top: 1px;
}

/* Expanded detail rows — hidden by default */
.entry-details {
  display: none;
  margin-top: 0.4rem;
  padding: 0.5rem 0.6rem;
  background: var(--bg-card);
  border-radius: var(--radius);
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

.entry-details .detail-row {
  display: flex;
  gap: 0.5rem;
}

.entry-details .detail-label {
  color: var(--text-secondary);
  min-width: 70px;
  flex-shrink: 0;
}

.entry-details .detail-value {
  color: var(--text-primary);
}

.entry-details .detail-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
}

.ledger-entry.expanded .entry-details {
  display: block;
}

.ledger-entry.expanded {
  background: var(--bg-card);
}

/* Compact view (when column is narrow) — hide meta, show just amount + dot */
.columns.data-max .entry-desc {
  font-size: 0.75rem;
}
.columns.data-max .entry-meta {
  display: none;
}
.columns.data-max .entry-details {
  display: none !important;
}
.columns.data-max .entry-right {
  font-size: 0.72rem;
}

.entry-right {
  text-align: right;
  flex-shrink: 0;
}

.entry-amount {
  font-weight: 600;
  white-space: nowrap;
}

.amount-positive { color: var(--green); }
.amount-negative { color: var(--red); }

.entry-running {
  color: var(--text-secondary);
  font-size: 0.68rem;
  white-space: nowrap;
}

.recurring-badge {
  font-size: 0.65rem;
  color: var(--accent);
  margin-left: 0.25rem;
}

/* ============================================
   DATA COLUMN
   ============================================ */

/* Summary cards */
.summary-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 1rem;
  border: 1px solid var(--border);
}

.card-label {
  display: block;
  font-size: 0.7rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.35rem;
}

.card-value {
  font-size: 1.3rem;
  font-weight: 700;
}

.card-invested .card-value { color: var(--blue); }
.card-expenses .card-value { color: var(--red); }
.card-income .card-value { color: var(--green); }
.card-balance .card-value { color: var(--accent); }

/* When data column is narrow, stack cards */
.columns.ledger-max .summary-cards {
  grid-template-columns: 1fr 1fr;
}
.columns.ledger-max .card-value {
  font-size: 1rem;
}

/* Form section */
.form-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}

.form-toggle {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.toggle-btn {
  flex: 1;
  padding: 0.45rem;
  font-size: 0.82rem;
  font-weight: 600;
  background: var(--bg-input);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
}

.toggle-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.toggle-btn:hover:not(.active) {
  color: var(--text-primary);
}

.entry-form {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.form-row {
  display: flex;
  gap: 0.65rem;
}

.form-row > * {
  flex: 1;
}

.entry-form input,
.entry-form select {
  padding: 0.55rem 0.7rem;
  font-size: 0.82rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--transition);
}

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

.entry-form select option {
  background: var(--bg-secondary);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: var(--text-secondary);
  cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
}

.entry-form .btn-primary {
  margin-top: 0.2rem;
}

/* Charts */
.charts-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  min-width: 0;
}

.chart-container {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  min-width: 0;
  overflow: hidden;
}

.chart-container canvas {
  width: 100% !important;
  height: auto !important;
}

.chart-container h3 {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.75rem;
}

.columns.ledger-max .charts-section {
  grid-template-columns: 1fr;
}

/* ============================================
   MODAL
   ============================================ */
.modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
}

.modal-content {
  position: relative;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow);
}

.modal-content h3 {
  margin-bottom: 1rem;
}

#edit-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

#edit-form input,
#edit-form select {
  padding: 0.6rem 0.75rem;
  font-size: 0.85rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  outline: none;
}

#edit-form input:focus,
#edit-form select:focus {
  border-color: var(--accent);
}

.modal-actions {
  display: flex;
  gap: 0.75rem;
}

.modal-actions .btn {
  flex: 1;
}

/* ============================================
   INVENTORY
   ============================================ */
.inventory-view {
  padding: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
  height: calc(100vh - var(--topbar-h));
  overflow-y: auto;
}

.inv-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.inv-header h2 {
  font-size: 1.1rem;
  font-weight: 600;
}

.inv-add-form {
  display: flex;
  gap: 0.5rem;
  flex: 1;
  min-width: 250px;
}

.inv-add-form input {
  flex: 1;
  padding: 0.5rem 0.75rem;
  font-size: 0.85rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  outline: none;
}

.inv-add-form input:focus {
  border-color: var(--accent);
}

.inv-add-form .btn-primary {
  width: auto;
  white-space: nowrap;
}

.inv-empty {
  color: var(--text-secondary);
  text-align: center;
  padding: 3rem;
}

/* Product grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 1rem;
}

/* Product card */
.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
}

.pc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.pc-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
}

.pc-name {
  font-size: 1rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.stock-badge {
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  white-space: nowrap;
}

.stock-positive {
  background: var(--green-dim);
  color: var(--green);
}

.stock-zero {
  background: var(--red-dim);
  color: var(--red);
}

.pc-delete {
  flex-shrink: 0;
}

/* Product card forms */
.pc-forms {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.pc-form {
  display: flex;
  gap: 0.4rem;
  align-items: center;
  flex-wrap: wrap;
}

.pc-form input {
  padding: 0.4rem 0.55rem;
  font-size: 0.78rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  outline: none;
}

.pc-form input:focus {
  border-color: var(--accent);
}

.pc-qty {
  width: 60px;
  flex: 0 0 60px;
}

.pc-note {
  flex: 1;
  min-width: 80px;
}

.pc-client {
  flex: 1;
  min-width: 80px;
}

.pc-date {
  width: 120px;
  flex: 0 0 120px;
}

.btn-stock-in {
  background: var(--green);
  color: #fff;
  padding: 0.4rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
}

.btn-stock-in:hover {
  opacity: 0.85;
}

.btn-stock-out {
  background: var(--red);
  color: #fff;
  padding: 0.4rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
}

.btn-stock-out:hover {
  opacity: 0.85;
}

/* History toggle */
.pc-history-toggle {
  text-align: center;
}

.pc-toggle-btn {
  font-size: 0.75rem;
  padding: 0.3rem 0.75rem;
}

/* Movement history */
.pc-history {
  margin-top: 0.75rem;
  border-top: 1px solid var(--border);
  padding-top: 0.75rem;
}

.mv-empty {
  color: var(--text-secondary);
  font-size: 0.78rem;
  text-align: center;
  padding: 0.5rem;
}

.mv-list {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.mv-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.4rem;
  font-size: 0.78rem;
  border-radius: var(--radius);
}

.mv-row:hover {
  background: var(--bg-input);
}

.mv-type {
  font-weight: 700;
  min-width: 40px;
  text-align: center;
}

.mv-in {
  color: var(--green);
}

.mv-out {
  color: var(--red);
}

.mv-detail {
  flex: 1;
  min-width: 0;
}

.mv-note {
  color: var(--text-secondary);
}

.mv-date {
  color: var(--text-secondary);
  font-size: 0.72rem;
  white-space: nowrap;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 900px) {
  .summary-cards {
    grid-template-columns: repeat(2, 1fr);
  }
  .charts-section {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  /* Topbar: wrap into two rows */
  .topbar {
    height: auto;
    flex-wrap: wrap;
    padding: 0.5rem 0.75rem;
    gap: 0.4rem 0.75rem;
  }

  .topbar-title {
    font-size: 0.85rem;
  }

  .topbar-tabs {
    order: 10;
    width: 100%;
    justify-content: center;
    padding-top: 0.25rem;
    border-top: 1px solid var(--border);
    margin-top: 0.2rem;
  }

  .tab-btn {
    flex: 1;
    text-align: center;
  }

  .topbar-balance .balance-label {
    display: none;
  }

  .balance-amount {
    font-size: 1rem;
  }

  /* Finance: stack columns vertically */
  .columns {
    flex-direction: column;
    height: auto;
    min-height: calc(100vh - 85px);
  }

  .column-ledger,
  .column-data {
    flex: none !important;
    min-width: auto !important;
    max-height: none;
  }

  .column-ledger {
    max-height: 45vh;
  }

  .col-divider {
    display: none;
  }

  .column-header .col-toggle {
    display: none;
  }

  .column-body {
    padding: 0.75rem;
  }

  .form-row {
    flex-direction: column;
  }

  .summary-cards {
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
  }

  .card {
    padding: 0.75rem;
  }

  .card-value {
    font-size: 1.1rem;
  }

  .form-section {
    padding: 1rem;
  }

  .toggle-btn {
    font-size: 0.75rem;
    padding: 0.4rem;
  }

  /* Inventory */
  .inventory-view {
    padding: 0.75rem;
    height: auto;
    min-height: calc(100vh - 85px);
  }

  .inv-header {
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
  }

  .inv-add-form {
    min-width: auto;
  }

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

  .product-card {
    padding: 1rem;
  }

  .pc-form {
    flex-direction: column;
    align-items: stretch;
  }

  .pc-qty,
  .pc-date {
    width: 100%;
    flex: none;
  }

  .pc-form input {
    width: 100%;
  }

  .btn-stock-in,
  .btn-stock-out {
    width: 100%;
    text-align: center;
    padding: 0.5rem;
  }

  /* Ledger entries */
  .entry-desc {
    font-size: 0.78rem;
  }

  .entry-amount {
    font-size: 0.78rem;
  }

  .entry-running {
    display: none;
  }
}

@media (max-width: 380px) {
  .summary-cards {
    grid-template-columns: 1fr;
  }

  .topbar-title {
    font-size: 0.75rem;
  }
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}