/* =============================================================
   ENVIROSPAN COMPLIANCE OS — components.css
   Buttons, cards, forms, tables, badges, alerts, modals
   ============================================================= */

/* ── Buttons ─────────────────────────────────────────── */
.btn {
  display:     inline-flex;
  align-items: center;
  justify-content: center;
  gap:         var(--space-2);
  padding:     0 var(--space-5);
  height:      var(--input-height);
  font-size:   var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  font-family: var(--font-family);
  border-radius: var(--radius-md);
  border:      2px solid transparent;
  cursor:      pointer;
  transition:  all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
}

.btn:disabled { opacity: 0.55; cursor: not-allowed; pointer-events: none; }
.btn .btn-icon { width: 16px; height: 16px; flex-shrink: 0; }

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

.btn-secondary { background: var(--color-secondary); color: #fff; border-color: var(--color-secondary); }
.btn-secondary:hover { background: var(--color-secondary-dark); border-color: var(--color-secondary-dark); color: #fff; }

.btn-outline   { background: transparent; color: var(--color-primary); border-color: var(--color-primary); }
.btn-outline:hover { background: var(--color-primary); color: #fff; }

.btn-ghost     { background: transparent; color: var(--color-text-secondary); border-color: var(--color-border-dark); }
.btn-ghost:hover { background: var(--color-bg-alt); color: var(--color-text); border-color: var(--color-border-dark); }

.btn-danger    { background: var(--color-danger); color: #fff; border-color: var(--color-danger); }
.btn-danger:hover { background: #c0392b; border-color: #c0392b; color: #fff; }

.btn-sm { height: var(--input-height-sm); padding: 0 var(--space-3); font-size: var(--font-size-xs); }
.btn-lg { height: var(--input-height-lg); padding: 0 var(--space-8); font-size: var(--font-size-base); }
.btn-block { width: 100%; }

/* ── Cards ───────────────────────────────────────────── */
.card {
  background:    var(--color-bg-card);
  border-radius: var(--radius-lg);
  box-shadow:    var(--shadow-sm);
  border:        1px solid var(--color-border);
  overflow:      hidden;
}

.card-header {
  padding:       var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-border);
  display:       flex;
  align-items:   center;
  justify-content: space-between;
  gap:           var(--space-4);
}

.card-header h2, .card-header h3 {
  font-size:   var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color:       var(--color-text);
}

.card-body   { padding: var(--space-6); }
.card-footer { padding: var(--space-5) var(--space-6); border-top: 1px solid var(--color-border); background: var(--color-bg-alt); }

/* Stat cards */
.stat-card {
  background:    var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding:       var(--space-6);
  border:        1px solid var(--color-border);
  box-shadow:    var(--shadow-sm);
  transition:    box-shadow var(--transition-fast);
}

.stat-card:hover { box-shadow: var(--shadow-md); }

.stat-card .stat-label {
  font-size:     var(--font-size-sm);
  color:         var(--color-text-muted);
  font-weight:   var(--font-weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-2);
}

.stat-card .stat-value {
  font-size:   var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color:       var(--color-primary);
  line-height: 1;
}

.stat-card .stat-change {
  font-size:  var(--font-size-xs);
  color:      var(--color-text-muted);
  margin-top: var(--space-2);
}

.stat-card .stat-icon {
  width:         48px;
  height:        48px;
  border-radius: var(--radius-md);
  background:    rgba(27,58,107,0.08);
  display:       flex;
  align-items:   center;
  justify-content: center;
  color:         var(--color-primary);
  flex-shrink:   0;
}

.stat-grid {
  display:               grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap:                   var(--space-5);
  margin-bottom:         var(--space-8);
}

/* ── Forms ───────────────────────────────────────────── */
.form-group  { margin-bottom: var(--space-5); }
.form-row    { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-5); }
.form-row-3  { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: var(--space-5); }

.form-label {
  display:       block;
  font-size:     var(--font-size-sm);
  font-weight:   var(--font-weight-semibold);
  color:         var(--color-text);
  margin-bottom: var(--space-2);
}

.form-label .required { color: var(--color-danger); margin-left: 2px; }

.form-control {
  display:       block;
  width:         100%;
  height:        var(--input-height);
  padding:       0 var(--space-4);
  font-size:     var(--font-size-sm);
  font-family:   var(--font-family);
  color:         var(--color-text);
  background:    var(--input-bg);
  border:        1.5px solid var(--input-border);
  border-radius: var(--input-radius);
  transition:    border-color var(--transition-fast), box-shadow var(--transition-fast);
  appearance:    none;
}

.form-control:focus {
  outline:      none;
  border-color: var(--input-border-focus);
  box-shadow:   var(--input-shadow-focus);
}

.form-control::placeholder { color: var(--color-text-disabled); }
.form-control:disabled { background: var(--color-bg-alt); color: var(--color-text-muted); cursor: not-allowed; }

textarea.form-control { height: auto; padding: var(--space-3) var(--space-4); resize: vertical; min-height: 80px; line-height: var(--line-height-normal); }

select.form-control {
  background-image:    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23718096' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:   no-repeat;
  background-position: right var(--space-4) center;
  padding-right:       var(--space-10);
  cursor:              pointer;
}

.form-text { font-size: var(--font-size-xs); color: var(--color-text-muted); margin-top: var(--space-1); }

.form-control.is-valid   { border-color: var(--color-secondary); }
.form-control.is-invalid { border-color: var(--color-danger); }
.invalid-feedback        { font-size: var(--font-size-xs); color: var(--color-danger); margin-top: var(--space-1); }

/* Input with unit suffix */
.input-group {
  display: flex;
  align-items: stretch;
}

.input-group .form-control { border-radius: var(--radius-md) 0 0 var(--radius-md); flex: 1; }
.input-group .input-addon {
  display:    flex;
  align-items: center;
  padding:    0 var(--space-3);
  background: var(--color-bg-alt);
  border:     1.5px solid var(--input-border);
  border-left: none;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size:  var(--font-size-sm);
  color:      var(--color-text-muted);
  white-space: nowrap;
}

/* Checkbox / Radio */
.form-check {
  display:     flex;
  align-items: center;
  gap:         var(--space-3);
  cursor:      pointer;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
  width:     18px;
  height:    18px;
  cursor:    pointer;
  accent-color: var(--color-primary);
  flex-shrink: 0;
}

.form-check-label { font-size: var(--font-size-sm); color: var(--color-text); cursor: pointer; }

/* U-value override toggle */
.uval-override-group { display: flex; align-items: center; gap: var(--space-3); }
.uval-override-group .form-control { flex: 1; }
.uval-override-toggle { font-size: var(--font-size-xs); color: var(--color-primary); cursor: pointer; white-space: nowrap; }
.uval-override-toggle:hover { text-decoration: underline; }

/* ── Tables ──────────────────────────────────────────── */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border:       1px solid var(--color-border);
  box-shadow:   var(--shadow-sm);
}

table.data-table {
  width:           100%;
  border-collapse: collapse;
  background:      var(--color-bg-card);
  font-size:       var(--font-size-sm);
}

.data-table thead th {
  padding:        var(--space-3) var(--space-5);
  background:     var(--color-primary);
  color:          #fff;
  font-weight:    var(--font-weight-semibold);
  font-size:      var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  text-align:     left;
  white-space:    nowrap;
}

.data-table tbody tr { transition: background var(--transition-fast); }
.data-table tbody tr:hover { background: #f0f4f8; }
.data-table tbody tr:nth-child(even) { background: var(--color-bg-alt); }
.data-table tbody tr:nth-child(even):hover { background: #e8edf3; }

.data-table td {
  padding:    var(--space-3) var(--space-5);
  color:      var(--color-text);
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}

.data-table tbody tr:last-child td { border-bottom: none; }
.data-table td.numeric { text-align: right; font-variant-numeric: tabular-nums; }
.data-table td.actions { text-align: right; white-space: nowrap; }

/* ── Badges ──────────────────────────────────────────── */
.badge {
  display:     inline-flex;
  align-items: center;
  padding:     2px var(--space-3);
  border-radius: var(--radius-full);
  font-size:   var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  white-space: nowrap;
}

.badge--green  { background: #d4edda; color: #155724; }
.badge--red    { background: #f8d7da; color: #721c24; }
.badge--orange { background: #fde8cc; color: #7d4e0a; }
.badge--blue   { background: #cce5ff; color: #004085; }
.badge--yellow { background: #fff3cd; color: #856404; }
.badge--purple { background: #e8d5f5; color: #5a1a8a; }
.badge--teal   { background: #d1f2eb; color: #0e6655; }
.badge--grey   { background: #e9ecef; color: #495057; }

/* ── Alerts ──────────────────────────────────────────── */
.alert {
  display:      flex;
  align-items:  flex-start;
  gap:          var(--space-3);
  padding:      var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  font-size:    var(--font-size-sm);
  margin-bottom: var(--space-5);
  border:       1px solid;
}

.alert-success { background: #d4edda; border-color: #c3e6cb; color: #155724; }
.alert-error   { background: #f8d7da; border-color: #f5c6cb; color: #721c24; }
.alert-warning { background: #fff3cd; border-color: #ffeeba; color: #856404; }
.alert-info    { background: #cce5ff; border-color: #b8daff; color: #004085; }

.alert .alert-icon { width: 18px; height: 18px; flex-shrink: 0; margin-top: 1px; }
.alert .alert-close { margin-left: auto; cursor: pointer; opacity: 0.5; background: none; border: none; font-size: 18px; line-height: 1; color: inherit; padding: 0; }
.alert .alert-close:hover { opacity: 1; }

/* AI validation flag */
.ai-flag {
  display:      flex;
  align-items:  flex-start;
  gap:          var(--space-2);
  padding:      var(--space-3);
  border-radius: var(--radius-md);
  font-size:    var(--font-size-xs);
  margin-top:   var(--space-2);
  border-left:  3px solid;
}

.ai-flag.ai-warning { background: #fff8e1; border-left-color: #f39c12; color: #7d4e0a; }
.ai-flag.ai-error   { background: #fff0f0; border-left-color: #e74c3c; color: #721c24; }
.ai-flag.ai-info    { background: #e8f4fd; border-left-color: #3498db; color: #004085; }
.ai-flag .ai-icon   { width: 14px; height: 14px; flex-shrink: 0; margin-top: 1px; }
.ai-flag .ai-override-btn { margin-left: auto; font-size: var(--font-size-xs); color: var(--color-primary); cursor: pointer; background: none; border: none; padding: 0; text-decoration: underline; }

/* ── Catalogue Visual Cards ──────────────────────────── */
.card-grid {
  display:               grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap:                   var(--space-4);
}

.visual-card {
  background:    var(--color-bg-card);
  border:        2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding:       var(--space-4);
  cursor:        pointer;
  transition:    all var(--transition-fast);
  text-align:    center;
  position:      relative;
}

.visual-card:hover {
  border-color:  var(--color-primary-light);
  box-shadow:    var(--shadow-md);
  transform:     translateY(-2px);
}

.visual-card.selected {
  border-color:  var(--color-primary);
  background:    rgba(27,58,107,0.04);
  box-shadow:    0 0 0 3px rgba(27,58,107,0.15);
}

.visual-card .card-img {
  width:         100%;
  aspect-ratio:  4/3;
  object-fit:    cover;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-3);
  background:    var(--color-bg-alt);
}

.visual-card .card-img-placeholder {
  width:         100%;
  aspect-ratio:  4/3;
  background:    var(--color-bg-alt);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-3);
  display:       flex;
  align-items:   center;
  justify-content: center;
  color:         var(--color-text-muted);
  font-size:     2rem;
}

.visual-card .card-name {
  font-size:   var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color:       var(--color-text);
  line-height: var(--line-height-tight);
}

.visual-card .card-meta {
  font-size:  var(--font-size-xs);
  color:      var(--color-text-muted);
  margin-top: var(--space-1);
}

.visual-card .selected-tick {
  position:      absolute;
  top:           var(--space-2);
  right:         var(--space-2);
  width:         22px;
  height:        22px;
  background:    var(--color-primary);
  border-radius: var(--radius-full);
  display:       flex;
  align-items:   center;
  justify-content: center;
  color:         #fff;
  font-size:     12px;
  opacity:       0;
  transition:    opacity var(--transition-fast);
}

.visual-card.selected .selected-tick { opacity: 1; }

/* Heat pump card */
.hp-card {
  background:    var(--color-bg-card);
  border:        1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow:      hidden;
  transition:    all var(--transition-fast);
}

.hp-card:hover { box-shadow: var(--shadow-md); border-color: var(--color-primary-light); }
.hp-card.selected { border-color: var(--color-secondary); box-shadow: 0 0 0 2px rgba(46,204,113,0.25); }

.hp-card .hp-img {
  width:       100%;
  aspect-ratio: 16/9;
  object-fit:  contain;
  background:  var(--color-bg-alt);
  padding:     var(--space-4);
}

.hp-card .hp-body { padding: var(--space-4); }
.hp-card .hp-brand { font-size: var(--font-size-xs); color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.04em; }
.hp-card .hp-model { font-size: var(--font-size-base); font-weight: var(--font-weight-bold); color: var(--color-text); margin: var(--space-1) 0; }
.hp-card .hp-stats { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-2); margin-top: var(--space-3); }
.hp-card .hp-stat-label { font-size: var(--font-size-xs); color: var(--color-text-muted); }
.hp-card .hp-stat-value { font-size: var(--font-size-sm); font-weight: var(--font-weight-semibold); color: var(--color-text); }
.hp-card .hp-badges { display: flex; gap: var(--space-2); flex-wrap: wrap; margin-top: var(--space-3); }

/* ── Modals ──────────────────────────────────────────── */
.modal-overlay {
  position:   fixed;
  inset:      0;
  background: rgba(0,0,0,0.5);
  z-index:    var(--z-overlay);
  display:    flex;
  align-items: center;
  justify-content: center;
  padding:    var(--space-5);
  opacity:    0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-overlay.active { opacity: 1; pointer-events: all; }

.modal {
  background:    var(--color-bg-card);
  border-radius: var(--radius-xl);
  box-shadow:    var(--shadow-xl);
  width:         100%;
  max-width:     560px;
  max-height:    90vh;
  overflow-y:    auto;
  transform:     translateY(16px);
  transition:    transform var(--transition-normal);
}

.modal-overlay.active .modal { transform: translateY(0); }
.modal-header { padding: var(--space-6); border-bottom: 1px solid var(--color-border); display: flex; align-items: center; justify-content: space-between; }
.modal-header h3 { font-size: var(--font-size-xl); font-weight: var(--font-weight-bold); color: var(--color-text); }
.modal-close { background: none; border: none; cursor: pointer; color: var(--color-text-muted); width: 32px; height: 32px; display: flex; align-items: center; justify-content: center; border-radius: var(--radius-md); }
.modal-close:hover { background: var(--color-bg-alt); color: var(--color-text); }
.modal-body { padding: var(--space-6); }
.modal-footer { padding: var(--space-5) var(--space-6); border-top: 1px solid var(--color-border); display: flex; justify-content: flex-end; gap: var(--space-3); }

/* ── Pagination ──────────────────────────────────────── */
.pagination {
  display:     flex;
  align-items: center;
  gap:         var(--space-1);
  margin-top:  var(--space-6);
}

.pagination a, .pagination span {
  display:      flex;
  align-items:  center;
  justify-content: center;
  width:        36px;
  height:       36px;
  border-radius: var(--radius-md);
  font-size:    var(--font-size-sm);
  font-weight:  var(--font-weight-medium);
  border:       1.5px solid var(--color-border);
  color:        var(--color-text-secondary);
  transition:   all var(--transition-fast);
}

.pagination a:hover { background: var(--color-bg-alt); border-color: var(--color-border-dark); color: var(--color-text); }
.pagination .active { background: var(--color-primary); border-color: var(--color-primary); color: #fff; cursor: default; }
.pagination .disabled { opacity: 0.4; cursor: not-allowed; pointer-events: none; }

/* ── Tabs ────────────────────────────────────────────── */
.tabs { display: flex; border-bottom: 2px solid var(--color-border); margin-bottom: var(--space-6); gap: 0; }
.tab-link {
  padding:      var(--space-3) var(--space-6);
  font-size:    var(--font-size-sm);
  font-weight:  var(--font-weight-semibold);
  color:        var(--color-text-muted);
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  transition:   all var(--transition-fast);
  cursor:       pointer;
  text-decoration: none;
  background:   none;
  border-top:   none;
  border-left:  none;
  border-right: none;
  font-family:  var(--font-family);
}
.tab-link:hover  { color: var(--color-primary); }
.tab-link.active { color: var(--color-primary); border-bottom-color: var(--color-primary); }
.tab-content > div { display: none; }
.tab-content > div.active { display: block; }

/* ── Dropdown ────────────────────────────────────────── */
.dropdown { position: relative; display: inline-flex; }
.dropdown-menu {
  position:      absolute;
  top:           calc(100% + var(--space-1));
  right:         0;
  background:    var(--color-bg-card);
  border:        1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow:    var(--shadow-lg);
  min-width:     180px;
  z-index:       var(--z-dropdown);
  display:       none;
  overflow:      hidden;
}

.dropdown.open .dropdown-menu { display: block; }
.dropdown-item {
  display:    block;
  padding:    var(--space-3) var(--space-4);
  font-size:  var(--font-size-sm);
  color:      var(--color-text);
  transition: background var(--transition-fast);
  cursor:     pointer;
  background: none;
  border:     none;
  width:      100%;
  text-align: left;
  font-family: var(--font-family);
}
.dropdown-item:hover { background: var(--color-bg-alt); }
.dropdown-item.danger { color: var(--color-danger); }
.dropdown-divider { border: none; border-top: 1px solid var(--color-border); margin: var(--space-1) 0; }

/* ── Loading Spinner ─────────────────────────────────── */
.spinner {
  width:  24px; height: 24px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}
.spinner-sm { width: 16px; height: 16px; border-width: 2px; }
.spinner-lg { width: 40px; height: 40px; border-width: 4px; }
@keyframes spin { to { transform: rotate(360deg); } }

.loading-overlay {
  position: fixed; inset: 0;
  background: rgba(255,255,255,0.8);
  z-index: var(--z-modal);
  display: flex; align-items: center; justify-content: center;
  flex-direction: column; gap: var(--space-4);
}

/* ── Search box ──────────────────────────────────────── */
.search-box {
  position: relative;
  display: inline-flex;
  align-items: center;
}
.search-box .search-icon {
  position: absolute;
  left: 10px;
  width: 16px;
  height: 16px;
  color: var(--color-text-muted);
  pointer-events: none;
  flex-shrink: 0;
}
.search-box input {
  padding-left: 34px;
}