/**
 * CIVITECT - Electrical Load Calculator Styles
 * Engineering Dashboard Theme
 * Standards: PUIL 2020, IEC 60364, IEEE 141
 */

/* ========================================
   DASHBOARD LAYOUT
======================================== */
.dashboard-container {
  max-width: 1600px;
  margin: 0 auto;
  padding: 24px;
}

.app-layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 24px;
  align-items: start;
}

@media (max-width: 1200px) {
  .app-layout {
    grid-template-columns: 1fr;
  }
  .sidebar {
    position: static !important;
    max-height: none !important;
  }
}

/* ========================================
   SIDEBAR (LEFT PANEL)
======================================== */
.sidebar {
  position: sticky;
  top: 80px;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
  padding-right: 4px;
}

.sidebar::-webkit-scrollbar { width: 6px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { 
  background: var(--border); 
  border-radius: 3px; 
}

.side-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 12px;
}

.side-panel-title {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.form-group-eng { 
  margin-bottom: 10px; 
}

.form-group-eng label {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.form-group-eng input, 
.form-group-eng select {
  width: 100%;
  padding: 8px 10px;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.8125rem;
  color: var(--text);
  font-family: inherit;
}

.form-group-eng input:focus, 
.form-group-eng select:focus {
  outline: none;
  border-color: var(--elec);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--elec) 15%, transparent);
}

.form-row-2 { 
  display: grid; 
  grid-template-columns: 1fr 1fr; 
  gap: 8px; 
}

.form-row-3 { 
  display: grid; 
  grid-template-columns: 1fr 1fr 1fr; 
  gap: 8px; 
}

/* ========================================
   TOOLTIP
======================================== */
.tooltip-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--text-muted);
  color: white;
  font-size: 0.625rem;
  font-weight: 700;
  cursor: help;
  position: relative;
}

.tooltip-icon::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  padding: 6px 10px;
  background: var(--text);
  color: var(--card);
  font-size: 0.75rem;
  font-weight: 500;
  white-space: nowrap;
  border-radius: 6px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
  z-index: 100;
  max-width: 240px;
  white-space: normal;
  line-height: 1.4;
}

.tooltip-icon:hover::after {
  opacity: 1;
}

/* ========================================
   MAIN CONTENT (RIGHT PANEL)
======================================== */
.main-content { 
  min-width: 0; 
}

.page-header {
  margin-bottom: 20px;
}

.page-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text);
  margin: 0 0 6px 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-subtitle { 
  color: var(--text-secondary); 
  font-size: 0.875rem; 
  margin: 0; 
}

/* ========================================
   TOOLBAR
======================================== */
.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
  background: var(--card);
  padding: 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.toolbar-group { 
  display: flex; 
  gap: 8px; 
  flex-wrap: wrap; 
}

.btn {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: inherit;
}

.btn:hover { 
  border-color: var(--elec); 
  color: var(--elec); 
  transform: translateY(-1px); 
}

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

.btn-primary:hover { 
  background: color-mix(in srgb, var(--elec) 85%, black); 
  color: #fff; 
}

.btn-icon {
  padding: 4px 8px;
  border-radius: 6px;
  border: 1px solid transparent;
  background: transparent;
  cursor: pointer;
  font-size: 0.875rem;
  transition: all 0.2s;
}

.btn-icon:hover {
  background: var(--elec-bg);
  border-color: var(--elec);
}

.btn-del:hover {
  background: rgba(239, 68, 68, 0.1) !important;
  border-color: #ef4444 !important;
}

/* ========================================
   LOAD TABLE
======================================== */
.table-wrapper {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 20px;
}

.table-scroll {
  overflow-x: auto;
  max-height: 600px;
  overflow-y: auto;
}

.table-scroll::-webkit-scrollbar { 
  height: 10px; 
  width: 10px; 
}
.table-scroll::-webkit-scrollbar-track { 
  background: var(--bg-subtle); 
}
.table-scroll::-webkit-scrollbar-thumb { 
  background: var(--border); 
  border-radius: 5px; 
}

.load-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
  min-width: 2000px;
}

.load-table th {
  background: var(--bg-subtle);
  color: var(--text-secondary);
  padding: 10px 8px;
  text-align: left;
  font-weight: 700;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 2px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
  white-space: nowrap;
}

.load-table td {
  padding: 6px 6px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.load-table tr:last-child td { border-bottom: none; }
.load-table tr:hover { background: var(--bg-subtle); }

.load-table input,
.load-table select {
  width: 100%;
  padding: 5px 6px;
  border: 1px solid transparent;
  border-radius: 4px;
  font-size: 0.8125rem;
  background: transparent;
  color: var(--text);
  min-width: 40px;
  font-family: inherit;
}

.load-table input:focus,
.load-table select:focus {
  outline: none;
  border-color: var(--elec);
  background: var(--card);
}

.load-table input[type="number"] { 
  text-align: right; 
}

.load-table input:disabled,
.load-table select:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.cell-no {
  text-align: center;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.75rem;
}

.cell-calc {
  background: var(--bg-subtle);
  font-weight: 700;
  color: var(--elec);
  text-align: right;
  font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
  font-size: 0.8125rem;
  padding: 6px 8px;
}

.cell-actions {
  text-align: center;
  white-space: nowrap;
}

.empty-table {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

/* ========================================
   SUMMARY CARDS
======================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  position: relative;
  overflow: hidden;
  transition: transform 0.2s, border-color 0.2s;
}

.stat-card:hover {
  transform: translateY(-2px);
  border-color: var(--elec);
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--elec);
}

.stat-card.success::before { background: #10b981; }
.stat-card.warning::before { background: var(--accent); }
.stat-card.danger::before { background: #ef4444; }
.stat-card.info::before { background: #8b5cf6; }

.stat-label {
  font-size: 0.6875rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.stat-value {
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.025em;
  font-family: 'SF Mono', Monaco, monospace;
}

.stat-unit {
  font-size: 0.6875rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* ========================================
   RECOMMENDATIONS
======================================== */
.recs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.rec-card {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
}

.rec-title {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.rec-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--elec);
  font-family: 'SF Mono', Monaco, monospace;
}

.rec-note {
  font-size: 0.6875rem;
  color: var(--text-muted);
  line-height: 1.4;
  margin-top: 6px;
}

/* ========================================
   PHASE BALANCE PANEL
======================================== */
.phase-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 20px;
}

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

@media (max-width: 768px) {
  .phase-grid { grid-template-columns: repeat(2, 1fr); }
}

.phase-item {
  background: var(--bg-subtle);
  padding: 14px;
  border-radius: 10px;
  border: 2px solid var(--border);
  text-align: center;
}

.phase-item.phase-r { border-left: 4px solid #ef4444; }
.phase-item.phase-s { border-left: 4px solid #f59e0b; }
.phase-item.phase-t { border-left: 4px solid #10b981; }
.phase-item.phase-n { border-left: 4px solid #8b5cf6; }

.phase-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 700;
  text-transform: uppercase;
}

.phase-value {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text);
  font-family: 'SF Mono', Monaco, monospace;
  margin-top: 4px;
}

.unbalance-indicator {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 700;
  margin-left: auto;
}

.unbalance-indicator.balanced {
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
}

.unbalance-indicator.moderate {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent);
}

.unbalance-indicator.unbalanced {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
}

/* ========================================
   CHARTS
======================================== */
.charts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}

@media (max-width: 900px) {
  .charts-grid { grid-template-columns: 1fr; }
}

.chart-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
}

.chart-panel h3 {
  font-size: 0.9375rem;
  font-weight: 700;
  margin: 0 0 12px 0;
  color: var(--text);
}

.chart-container { 
  position: relative; 
  height: 280px; 
}

/* ========================================
   VALIDATION ALERTS
======================================== */
.alert {
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: 8px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  line-height: 1.4;
}

.alert-success {
  background: rgba(16, 185, 129, 0.1);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.alert-warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--accent-hover);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.alert-danger {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

/* ========================================
   AUDIT LOG
======================================== */
.audit-log {
  max-height: 180px;
  overflow-y: auto;
  background: var(--bg-subtle);
  border-radius: 8px;
  padding: 10px;
  font-family: 'SF Mono', Monaco, monospace;
  font-size: 0.6875rem;
}

.log-entry {
  padding: 3px 0;
  border-bottom: 1px dashed var(--border);
  color: var(--text-secondary);
}

.log-entry:last-child { border-bottom: none; }

.log-time {
  color: var(--elec);
  font-weight: 700;
  margin-right: 6px;
}

/* ========================================
   TOAST NOTIFICATIONS
======================================== */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 12px 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.15);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
  z-index: 1000;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s ease;
  max-width: 320px;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast-success { border-left: 4px solid #10b981; }
.toast-error { border-left: 4px solid #ef4444; }
.toast-warning { border-left: 4px solid var(--accent); }
.toast-info { border-left: 4px solid var(--elec); }

/* ========================================
   SECTION DIVIDERS
======================================== */
.section-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin: 24px 0 12px 0;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-title:first-child { margin-top: 0; }

/* ========================================
   PRINT STYLES
======================================== */
@media print {
  .navbar, .sidebar, .toolbar, .btn, .cell-actions, 
  .toast, .theme-toggle, footer { display: none !important; }
  
  .app-layout {
    grid-template-columns: 1fr !important;
  }
  
  .main-content {
    padding: 0;
  }
  
  .stat-card, .rec-card, .chart-panel {
    break-inside: avoid;
    page-break-inside: avoid;
  }
  
  body { background: white !important; color: black !important; }
  .stat-card, .rec-card { border: 1px solid #ccc !important; }
}

/* ========================================
   RESPONSIVE REFINEMENTS
======================================== */
@media (max-width: 640px) {
  .dashboard-container { padding: 16px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .recs-grid { grid-template-columns: 1fr; }
  .page-title { font-size: 1.25rem; }
  .toolbar { flex-direction: column; align-items: stretch; }
  .toolbar-group { justify-content: center; }
}