:root {
  --color-primary: #0f5c4e;
  --color-primary-dark: #0a4038;
  --color-primary-light: #e4f3ef;
  --color-accent: #1f8a70;
  --color-bg: #f4f6f8;
  --color-surface: #ffffff;
  --color-border: #e2e6ea;
  --color-text: #1f2937;
  --color-text-muted: #6b7280;
  --color-danger: #b42318;
  --color-danger-light: #fdecea;
  --color-success: #0a7a45;
  --color-success-light: #e7f7ee;
  --color-warning: #92620a;
  --color-warning-light: #fef3e2;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06), 0 1px 3px rgba(16, 24, 40, 0.08);
  --font: "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
}

.app {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px 32px 60px;
}

@media (max-width: 600px) {
  .app {
    padding: 16px 14px 40px;
  }
}

/* ---------- Header ---------- */
.app-header {
  margin-bottom: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.5px;
  box-shadow: var(--shadow);
}

.brand-text h1 {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary-dark);
}

.brand-text p {
  margin: 2px 0 0;
  font-size: 13.5px;
  color: var(--color-text-muted);
}

/* ---------- Tabs ---------- */
.tabs {
  display: flex;
  gap: 6px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 24px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  background:
    linear-gradient(to right, var(--color-bg) 30%, rgba(255, 255, 255, 0)),
    linear-gradient(to right, rgba(255, 255, 255, 0), var(--color-bg) 70%) 100% 0,
    linear-gradient(to right, rgba(16, 24, 40, 0.22), rgba(16, 24, 40, 0)),
    linear-gradient(to left, rgba(16, 24, 40, 0.22), rgba(16, 24, 40, 0)) 100% 0;
  background-repeat: no-repeat;
  background-color: var(--color-bg);
  background-size: 20px 100%, 20px 100%, 12px 100%, 12px 100%;
  background-position: 0 0, 100% 0, 0 0, 100% 0;
  background-attachment: local, local, scroll, scroll;
}

.tab-btn {
  appearance: none;
  background: none;
  border: none;
  padding: 12px 18px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--color-text-muted);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: color 0.15s, border-color 0.15s;
  white-space: nowrap;
  flex-shrink: 0;
}

.tab-btn:hover {
  color: var(--color-primary-dark);
}

.tab-btn.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Layout ---------- */
.panel-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 18px;
  margin-bottom: 18px;
}

@media (max-width: 820px) {
  .panel-grid {
    grid-template-columns: 1fr;
  }
}

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

@media (max-width: 600px) {
  .card {
    padding: 14px;
  }
}

.card-header h2 {
  margin: 0 0 4px;
  font-size: 16.5px;
  color: var(--color-primary-dark);
}

.card-sub {
  margin: 0 0 16px;
  font-size: 13px;
  color: var(--color-text-muted);
}

.sub-heading {
  font-size: 14.5px;
  color: var(--color-primary-dark);
  margin: 22px 0 12px;
  padding-top: 16px;
  border-top: 1px dashed var(--color-border);
}

.card-header-flex {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.card-header-flex .btn {
  flex-shrink: 0;
}

.empty-hint {
  text-align: center;
  padding: 18px 10px;
  margin: 0;
}

/* ---------- Form ---------- */
.form-row {
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-row label {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--color-text);
}

.form-row input[type="number"],
.form-row input[type="text"],
.form-row select {
  padding: 9px 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 14px;
  background: #fff;
  color: var(--color-text);
  width: 100%;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-row select {
  cursor: pointer;
}

.form-row input:focus,
.form-row select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

/* ---------- Sample data card ---------- */
.sample-card {
  background: var(--color-primary-light);
  border: 1px dashed #b9ddd1;
}

.sample-card .card-header h2 {
  color: var(--color-primary-dark);
}

.sample-card .form-row {
  margin-bottom: 4px;
}

.hint {
  font-size: 12px;
  color: var(--color-text-muted);
}

/* ---------- Monthly-to-unit helper ---------- */
.link-btn {
  appearance: none;
  background: none;
  border: none;
  padding: 2px 0;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--color-accent);
  cursor: pointer;
  text-align: left;
  width: fit-content;
}

.link-btn:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

.mini-helper {
  margin-top: 6px;
  padding: 12px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mini-helper-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.mini-helper-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mini-helper-field label {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-muted);
}

.mini-helper-field input {
  padding: 7px 9px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 13px;
  width: 100%;
}

.mini-helper-field input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px var(--color-primary-light);
}

.mini-helper-result {
  font-size: 13px;
  color: var(--color-text);
}

.mini-helper-result strong {
  color: var(--color-primary-dark);
}

.btn-mini {
  appearance: none;
  border: none;
  border-radius: 6px;
  padding: 7px 12px;
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
  background: var(--color-primary);
  color: #fff;
  width: fit-content;
}

.btn-mini:hover {
  background: var(--color-primary-dark);
}

/* ---------- Table ---------- */
.table-wrap {
  overflow-x: auto;
  margin-bottom: 14px;
  -webkit-overflow-scrolling: touch;
  /* Scroll shadows: fade + shadow hints appear only on the side(s) with more content to scroll to. */
  background:
    linear-gradient(to right, var(--color-surface) 30%, rgba(255, 255, 255, 0)),
    linear-gradient(to right, rgba(255, 255, 255, 0), var(--color-surface) 70%) 100% 0,
    linear-gradient(to right, rgba(16, 24, 40, 0.28), rgba(16, 24, 40, 0)),
    linear-gradient(to left, rgba(16, 24, 40, 0.28), rgba(16, 24, 40, 0)) 100% 0;
  background-repeat: no-repeat;
  background-color: var(--color-surface);
  background-size: 28px 100%, 28px 100%, 16px 100%, 16px 100%;
  background-position: 0 0, 100% 0, 0 0, 100% 0;
  background-attachment: local, local, scroll, scroll;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
  min-width: 540px;
}

thead th {
  text-align: left;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--color-text-muted);
  border-bottom: 2px solid var(--color-border);
  padding: 8px 8px;
  white-space: nowrap;
}

tbody td {
  padding: 6px 8px;
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}

tbody tr:hover {
  background: #fafbfc;
}

tfoot td {
  padding: 10px 8px;
  font-size: 14px;
}

.label-right {
  text-align: right;
  font-weight: 600;
  color: var(--color-text-muted);
}

.value-strong {
  font-weight: 700;
  color: var(--color-primary-dark);
  font-size: 15px;
}

table input[type="text"],
table input[type="number"] {
  width: 100%;
  padding: 7px 8px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 13.5px;
  min-width: 56px;
  box-sizing: border-box;
}

table input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px var(--color-primary-light);
}

.col-subtotal {
  white-space: nowrap;
}

.cell-subtotal {
  font-weight: 600;
  color: var(--color-primary-dark);
  white-space: nowrap;
}

.col-aksi {
  width: 36px;
}

.btn-remove {
  background: none;
  border: none;
  color: var(--color-danger);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 6px;
  min-width: 28px;
  min-height: 28px;
}

.btn-remove:hover {
  background: var(--color-danger-light);
}

/* ---------- Buttons ---------- */
.btn {
  appearance: none;
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, transform 0.05s;
}

.btn:active {
  transform: scale(0.98);
}

.btn-secondary {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.btn-secondary:hover {
  background: #d6ebe4;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  margin-top: 8px;
}

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

/* ---------- Results ---------- */
.result-card {
  border-top: 3px solid var(--color-primary);
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 8px;
}

@media (max-width: 820px) {
  .result-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .result-grid {
    grid-template-columns: 1fr;
  }
}

.result-box {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.result-box.highlight {
  background: var(--color-primary-light);
  border-color: #c7e4db;
}

.result-label {
  font-size: 12px;
  color: var(--color-text-muted);
  font-weight: 600;
}

.result-value {
  font-size: 19px;
  font-weight: 700;
  color: var(--color-primary-dark);
}

#box-laba-rugi.negative .result-value {
  color: var(--color-danger);
}

#box-laba-rugi.positive .result-value {
  color: var(--color-success);
}

/* ---------- Status banner ---------- */
.status-banner {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  background: var(--color-bg);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.status-banner.success {
  background: var(--color-success-light);
  color: var(--color-success);
  border-color: #bfe8d2;
}

.status-banner.danger {
  background: var(--color-danger-light);
  color: var(--color-danger);
  border-color: #f5c6c0;
}

.status-banner.warning {
  background: var(--color-warning-light);
  color: var(--color-warning);
  border-color: #f3dca4;
}

/* ---------- Footer ---------- */
.app-footer {
  text-align: center;
  margin-top: 30px;
  font-size: 12.5px;
  color: var(--color-text-muted);
}

/* ---------- Product cards (Master Produk) ---------- */
.product-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.product-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.product-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--color-bg);
  flex-wrap: wrap;
}

.btn-toggle-detail {
  appearance: none;
  background: none;
  border: none;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  padding: 4px 2px;
  font-size: 14.5px;
  font-weight: 700;
  color: var(--color-primary-dark);
  flex: 1 1 180px;
  min-width: 0;
  text-align: left;
}

.toggle-arrow {
  color: var(--color-accent);
  flex-shrink: 0;
}

.product-card-title-text {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.product-card-header select.product-kategori {
  padding: 6px 8px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 13px;
  background: #fff;
  flex-shrink: 0;
}

.badge {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-muted);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 4px 10px;
  white-space: nowrap;
  flex-shrink: 0;
}

.badge strong {
  color: var(--color-primary-dark);
}

.badge-accent {
  background: var(--color-primary-light);
  border-color: #c7e4db;
}

.btn-remove-product {
  appearance: none;
  background: none;
  border: none;
  color: var(--color-danger);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
  flex-shrink: 0;
}

.btn-remove-product:hover {
  background: var(--color-danger-light);
}

.product-card-body {
  padding: 16px;
  border-top: 1px solid var(--color-border);
}

.bahan-table-mini {
  min-width: 480px;
}

.product-extra-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px 16px;
  margin-top: 4px;
}

@media (max-width: 560px) {
  .product-extra-grid {
    grid-template-columns: 1fr;
  }
}

.helper-note {
  margin: 10px 0 14px;
}

.result-grid-mini {
  margin-top: 16px;
}

/* ---------- Simulasi tables (select inside table) ---------- */
table select {
  width: 100%;
  padding: 7px 8px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 13.5px;
  background: #fff;
  box-sizing: border-box;
}

table select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px var(--color-primary-light);
}

#bep-table, #sales-table, #purchase-table {
  min-width: 820px;
  table-layout: fixed;
}

#bep-table {
  min-width: 920px;
}

#purchase-table {
  min-width: 800px;
}

#bep-table thead th,
#sales-table thead th,
#purchase-table thead th {
  white-space: normal;
  line-height: 1.3;
  vertical-align: bottom;
}

#bep-table td:not(:first-child):not(:last-child),
#sales-table td:not(:first-child):not(:last-child):not(:nth-child(2)),
#purchase-table td:nth-child(3),
#purchase-table td:nth-child(4),
#purchase-table td:nth-child(6) {
  text-align: right;
}

#bep-table td:not(:first-child):not(:last-child) input,
#sales-table td:not(:first-child):not(:last-child):not(:nth-child(2)) input,
#purchase-table td:nth-child(3) input,
#purchase-table td:nth-child(4) input {
  text-align: right;
}

.cell-satuan-jual {
  color: var(--color-text-muted);
}

.cell-harga-jual {
  font-weight: 600;
  color: var(--color-primary-dark);
  white-space: nowrap;
}

/* Harga bahan yang otomatis mengikuti Data Pembelian (readonly) */
.bahan-harga-locked {
  background: var(--color-primary-light) !important;
  color: var(--color-primary-dark);
  border-style: dashed !important;
  cursor: not-allowed;
}

#bep-table .col-aksi,
#sales-table .col-aksi,
#purchase-table .col-aksi {
  text-align: center;
}

#bep-table select.bep-product-select,
#sales-table select.sales-product-select {
  text-overflow: ellipsis;
}