:root {
  --primary: #1a4f7a;
  --primary-light: #2a6fa8;
  --primary-bg: #f0f5fa;
  --accent: #c0392b;
  --success: #27ae60;
  --warning: #f39c12;
  --text: #2c3e50;
  --text-light: #7f8c8d;
  --border: #dce1e6;
  --bg: #ffffff;
  --bg-alt: #f8f9fa;
  --radius: 6px;
  --shadow: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-lg: 0 4px 12px rgba(0,0,0,0.1);
  --max-width: 860px;
  --transition: 0.2s ease;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg-alt);
  line-height: 1.6;
  min-height: 100vh;
}

a {
  color: var(--primary);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

/* Keyboard focus styles */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(26,79,122,0.2);
}
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary);
  color: white;
  padding: 0.5rem 1rem;
  z-index: 100;
  font-size: 0.85rem;
}
.skip-link:focus {
  top: 0;
}

/* Header */
.site-header {
  background: var(--primary);
  color: white;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 50;
}
.site-header h1 {
  font-size: 1.3rem;
  font-weight: 600;
}
.site-header a {
  color: white;
}
.lang-toggle {
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  color: white;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.85rem;
  line-height: 1.2;
  display: inline-block;
  transition: background var(--transition);
}
.lang-toggle:hover {
  background: rgba(255,255,255,0.25);
}

/* Main container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
}
.container-wide {
  max-width: 1100px;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}
.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
}
.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.card h3 {
  color: var(--primary);
  margin-bottom: 0.5rem;
  font-size: 1.15rem;
}
.card p {
  color: var(--text-light);
  font-size: 0.9rem;
  flex: 1;
  margin-bottom: 1rem;
}
.card .btn {
  align-self: flex-start;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: background var(--transition), opacity var(--transition);
  text-align: center;
}
.btn:hover {
  text-decoration: none;
}
.btn-primary {
  background: var(--primary);
  color: white;
}
.btn-primary:hover {
  background: var(--primary-light);
}
.btn-success {
  background: var(--success);
  color: white;
}
.btn-success:hover {
  opacity: 0.9;
}
.btn-danger {
  background: var(--accent);
  color: white;
}
.btn-danger:hover {
  opacity: 0.9;
}
.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-outline:hover {
  background: var(--bg-alt);
}
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Form styles */
.form-section {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow);
}
.form-section h2 {
  color: var(--primary);
  font-size: 1.1rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--primary-bg);
}
.form-group {
  margin-bottom: 1.25rem;
}
.form-group:last-child {
  margin-bottom: 0;
}
.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.35rem;
  font-size: 0.9rem;
}
.form-group .field-description {
  color: var(--text-light);
  font-size: 0.8rem;
  margin-bottom: 0.35rem;
}
.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="url"],
.form-group input[type="date"],
.form-group input[type="number"],
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-family: inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
  background: var(--bg);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26,79,122,0.1);
}
.form-group textarea {
  resize: vertical;
  min-height: 80px;
}
.form-group .char-count,
.form-group .word-count {
  text-align: right;
  font-size: 0.75rem;
  color: var(--text-light);
  margin-top: 0.25rem;
}
.form-group .char-count.over,
.form-group .word-count.over {
  color: var(--accent);
  font-weight: 600;
}

/* Radio groups */
.radio-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 0.25rem;
}
.radio-option {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
}
.radio-option:hover {
  background: var(--primary-bg);
  border-color: var(--primary-light);
}
.radio-option input {
  margin-top: 0.15rem;
}
.radio-option.selected {
  background: var(--primary-bg);
  border-color: var(--primary);
}

/* Dropdown multi-select */
.multiselect {
  position: relative;
}
.multiselect-trigger {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  cursor: pointer;
  font: inherit;
  color: var(--text);
  text-align: left;
}
.multiselect-trigger:hover {
  border-color: var(--primary-light);
}
.multiselect-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.25rem;
}
.multiselect-tags:empty {
  display: none;
}
.multiselect-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.5rem;
  background: var(--primary-bg);
  border: 1px solid var(--primary);
  border-radius: 3px;
  font-size: 0.82rem;
  color: var(--primary);
}
.multiselect-tag button {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  color: var(--primary);
  padding: 0;
}
.multiselect-tag button:hover {
  color: var(--accent);
}
.multiselect-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 20;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  max-height: 240px;
  overflow-y: auto;
  margin-top: 2px;
}
.multiselect-option {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.75rem;
  cursor: pointer;
  font-size: 0.9rem;
  transition: background 0.1s;
}
.multiselect-option:hover {
  background: var(--primary-bg);
}
.multiselect-option.active {
  background: var(--primary-bg);
  font-weight: 500;
}
.multiselect-option input {
  margin: 0;
}
.form-group.has-error .multiselect-trigger {
  border-color: var(--accent);
}

/* Validation errors */
.field-error {
  color: var(--accent);
  font-size: 0.8rem;
  margin-top: 0.25rem;
  display: none;
}
.field-error.visible {
  display: block;
}
.form-group.has-error > input,
.form-group.has-error > div > input,
.form-group.has-error > textarea,
.form-group.has-error > div > textarea,
.form-group.has-error > select {
  border-color: var(--accent);
}
.item-field.has-error input,
.item-field.has-error textarea {
  border-color: var(--accent);
}
.form-group.has-error .radio-option {
  border-color: #e8c4c0;
}

/* Required indicator */
.required-mark {
  color: var(--accent);
  margin-left: 0.15rem;
}

/* Field tooltip */
.field-tooltip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.1rem;
  height: 1.1rem;
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-bg);
  border: 1px solid var(--primary);
  border-radius: 50%;
  margin-left: 0.3rem;
  cursor: help;
  vertical-align: middle;
  position: relative;
}

/* Form actions */
.form-actions {
  display: flex;
  gap: 1rem;
  justify-content: flex-end;
  margin-top: 2rem;
  position: sticky;
  bottom: 0;
  background: var(--bg-alt);
  padding: 1rem 1.5rem;
  margin-left: -1.5rem;
  margin-right: -1.5rem;
  z-index: 10;
  border-top: 1px solid var(--border);
}
.form-actions .btn-outline {
  background: transparent;
  border: none;
  color: var(--text-light);
  font-size: 0.9rem;
}
.form-actions .btn-outline:hover {
  color: var(--text);
  background: transparent;
}

/* Alert / message */
.alert {
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
}
.alert-info {
  background: var(--primary-bg);
  border: 1px solid #b3d1e8;
  color: var(--primary);
}
.alert-success {
  background: #e8f5e9;
  border: 1px solid #a5d6a7;
  color: #2e7d32;
}
.alert-error {
  background: #fdecea;
  border: 1px solid #f5c6cb;
  color: var(--accent);
}
.alert-warning {
  background: #fff8e1;
  border: 1px solid #ffe082;
  color: #e65100;
}

/* Spinner */
.spinner {
  display: inline-block;
  width: 1.25rem;
  height: 1.25rem;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Loading overlay */
.form-loading {
  position: relative;
  pointer-events: none;
  opacity: 0.6;
}

/* Success page */
.success-card {
  text-align: center;
  padding: 3rem 2rem;
}
.success-card .icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}
.success-card h2 {
  margin-bottom: 0.5rem;
}

/* Admin message banner */
.admin-message {
  background: #fff3cd;
  border: 1px solid #ffc107;
  border-left: 4px solid #ffc107;
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
}
.admin-message strong {
  display: block;
  margin-bottom: 0.25rem;
}

/* Table form specific */
.order-table-wrap {
  overflow-x: auto;
  margin-top: 0.5rem;
}
.order-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}
.order-table th {
  background: var(--primary-bg);
  color: var(--primary);
  font-weight: 600;
  padding: 0.6rem 0.5rem;
  text-align: left;
  white-space: nowrap;
  border-bottom: 2px solid var(--border);
}
.order-table td {
  padding: 0.4rem 0.35rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.order-table input,
.order-table textarea {
  width: 100%;
  padding: 0.4rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.85rem;
  font-family: inherit;
}
.order-table input:focus,
.order-table textarea:focus {
  outline: none;
  border-color: var(--primary);
}
.order-table .computed {
  background: var(--bg-alt);
  font-weight: 600;
  padding: 0.4rem;
  border-radius: 4px;
  text-align: right;
}
.order-table .row-actions {
  white-space: nowrap;
}
.order-table .btn-remove-row {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  padding: 0.25rem;
  font-size: 1.1rem;
}
.order-table .btn-remove-row:hover {
  opacity: 0.7;
}
.grand-total {
  text-align: right;
  font-size: 1rem;
  font-weight: 600;
  padding: 0.75rem 0;
  color: var(--primary);
}
.column-totals {
  display: flex;
  gap: 2rem;
  justify-content: flex-end;
  padding: 0.75rem 0;
  font-size: 0.95rem;
  color: var(--primary);
  border-top: 2px solid var(--border);
  margin-top: 0.25rem;
}
.column-total-item strong {
  margin-left: 0.25rem;
}
/* Item cards (vertical table items) */
.item-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 1rem;
  overflow: hidden;
}
.item-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--primary-bg);
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border);
}
.item-card-number {
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--primary);
}
.item-card-header .btn-remove-row {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  font-size: 1.2rem;
  padding: 0 0.25rem;
  line-height: 1;
}
.item-card-header .btn-remove-row:hover {
  opacity: 0.7;
}
.item-card-header .btn-remove-row:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}
.item-card-body {
  padding: 0.75rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}
.item-field {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.item-field:not(.item-field-half) {
  grid-column: 1 / -1;
}
.item-field label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-light);
}
.item-field .field-description {
  font-size: 0.7rem;
  color: var(--text-light);
  margin-bottom: 0.15rem;
}
.item-field input,
.item-field textarea {
  width: 100%;
  padding: 0.45rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.9rem;
  font-family: inherit;
}
.item-field input:focus,
.item-field textarea:focus {
  outline: none;
  border-color: var(--primary);
}
.item-field .computed {
  background: var(--bg-alt);
  font-weight: 600;
  padding: 0.45rem 0.5rem;
  border-radius: 4px;
  text-align: right;
  font-size: 0.9rem;
}
@media (max-width: 600px) {
  .item-card-body {
    grid-template-columns: 1fr;
  }
  .item-field-half {
    grid-column: auto;
  }
}

/* Supplier group header */
.supplier-group-header {
  background: var(--primary-bg);
  border: 2px solid var(--primary);
  border-bottom: none;
  border-radius: var(--radius) var(--radius) 0 0;
  padding: 0.75rem 1rem;
  margin-top: 1.5rem;
}
.supplier-group-header.supplier-group-first {
  margin-top: 0;
}
.supplier-group-field label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  display: block;
  margin-bottom: 0.25rem;
}
.supplier-group-field input {
  width: 100%;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.9rem;
  font-family: inherit;
}
.supplier-group-field input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26,79,122,0.1);
}
.supplier-group-field.has-error input {
  border-color: var(--accent);
}
.supplier-group-field .field-description {
  font-size: 0.75rem;
  color: var(--text-light);
  margin-bottom: 0.25rem;
}
.item-card-grouped {
  border-top-left-radius: 0;
  border-top-right-radius: 0;
  border-top-color: var(--border);
}
.supplier-group-header + .item-card-grouped,
.supplier-group-header + div > .item-card-grouped {
  border-top: 1px solid var(--border);
}
.btn-add-item {
  margin-top: 0.5rem;
  margin-bottom: 0;
  font-size: 0.8rem;
  padding: 0.3rem 0.6rem;
}
.table-add-buttons {
  margin-top: 1rem;
}
.btn-add-row {
  margin-top: 0.75rem;
}

/* Page title */
.page-title {
  margin-bottom: 0.5rem;
  color: var(--primary);
}
.page-description {
  color: var(--text-light);
  margin-bottom: 2rem;
  font-size: 0.95rem;
}

/* Footer */
.site-footer {
  text-align: center;
  padding: 2rem;
  color: var(--text-light);
  font-size: 0.8rem;
}

/* Responsive */
@media (max-width: 640px) {
  .site-header {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
    padding: 0.75rem 1rem;
  }
  .site-header h1 {
    font-size: 1.15rem;
  }
  .header-actions {
    flex-wrap: wrap;
    justify-content: center;
  }
  .container {
    padding: 1.25rem 1rem;
  }
  .page-title {
    font-size: 1.4rem;
  }
  .form-section {
    padding: 1.25rem;
  }
  .form-actions {
    flex-direction: column;
    padding: 0.75rem 1rem;
    margin-left: -1rem;
    margin-right: -1rem;
  }
  .form-actions .btn {
    width: 100%;
  }
  .detail-grid {
    grid-template-columns: 1fr;
  }
  .detail-grid dt {
    margin-top: 0.5rem;
  }
  .detail-grid dt:first-child {
    margin-top: 0;
  }
  .column-totals {
    flex-direction: column;
    gap: 0.5rem;
  }
}

/* Admin tables responsive */
.admin-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.admin-table-wrap table {
  min-width: 600px;
}

/* Detail grid (submission summaries) */
.detail-grid {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 0.5rem 1rem;
  font-size: 0.9rem;
}
.detail-grid dt {
  font-weight: 600;
  color: var(--text-light);
}
.detail-grid dd {
  margin: 0;
  word-break: break-word;
}