@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&display=swap');

:root {
  --primary: #f59e0b;
  --primary-dark: #d97706;
  --primary-glow: rgba(245,158,11,0.15);
  --bg: #0a0f1e;
  --bg-secondary: #0f172a;
  --card-bg: rgba(30,41,59,0.6);
  --sidebar-bg: rgba(15,23,42,0.95);
  --text: #f8fafc;
  --text-dim: #94a3b8;
  --text-muted: #64748b;
  --accent: #38bdf8;
  --accent-glow: rgba(56,189,248,0.15);
  --success: #10b981;
  --success-bg: rgba(16,185,129,0.12);
  --warning: #f97316;
  --warning-bg: rgba(249,115,22,0.12);
  --danger: #ef4444;
  --danger-bg: rgba(239,68,68,0.12);
  --glass: rgba(255,255,255,0.04);
  --glass-hover: rgba(255,255,255,0.08);
  --border: rgba(255,255,255,0.08);
  --border-hover: rgba(255,255,255,0.15);
  --sidebar-w: 260px;
  --radius: 1rem;
  --radius-sm: 0.625rem;
  --radius-xs: 0.375rem;
  --shadow: 0 8px 32px rgba(0,0,0,0.3);
  --transition: 0.25s cubic-bezier(.4,0,.2,1);
}

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

body {
  font-family: 'Outfit', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  background-image:
    radial-gradient(ellipse at 10% 0%, rgba(245,158,11,0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 90% 100%, rgba(56,189,248,0.05) 0%, transparent 50%);
}

/* ===== LAYOUT ===== */
.app-layout { display:flex; min-height:100vh; }

.sidebar {
  width: var(--sidebar-w);
  background: var(--sidebar-bg);
  backdrop-filter: blur(20px);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  transition: transform var(--transition);
}

.main-content {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Sidebar reuse */
.sidebar-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.sidebar-header img { height: 36px; filter: invert(1) brightness(2); }
.sidebar-header .brand { font-size: 1.1rem; font-weight: 700; color: var(--primary); letter-spacing: -0.02em; }
.sidebar-header .brand-sub { font-size: 0.7rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em; }
.sidebar-nav { flex:1; padding: 1rem 0.75rem; display:flex; flex-direction:column; gap:2px; }
.nav-section-label {
  font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--text-muted); padding: 1rem 0.75rem 0.5rem; font-weight: 600;
}
.nav-item {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.65rem 0.75rem; border-radius: var(--radius-sm);
  cursor: pointer; color: var(--text-dim); font-size: 0.875rem;
  font-weight: 500; transition: all var(--transition);
  position: relative; text-decoration: none;
}
.nav-item:hover { background: var(--glass-hover); color: var(--text); }
.nav-item.active { background: var(--primary-glow); color: var(--primary); font-weight: 600; }
.nav-item.active::before {
  content: ''; position: absolute; left: 0; top: 20%; bottom: 20%;
  width: 3px; background: var(--primary); border-radius: 0 3px 3px 0;
}
.nav-item svg { width:18px; height:18px; flex-shrink:0; }
.sidebar-footer {
  padding: 1rem 1.25rem; border-top: 1px solid var(--border);
  display: flex; align-items: center; gap: 0.75rem;
}
.avatar {
  width: 36px; height: 36px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--warning));
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 0.8rem; color: white; flex-shrink: 0;
}
.sidebar-footer .user-name { font-size:0.85rem; font-weight:600; }
.sidebar-footer .user-role { font-size:0.7rem; color:var(--text-muted); }

/* ===== TOPBAR ===== */
.topbar {
  padding: 1rem 2rem;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  background: rgba(10,15,30,0.8);
  backdrop-filter: blur(12px);
  position: sticky; top: 0; z-index: 50;
}
.topbar-title { font-size:1.35rem; font-weight:700; }
.topbar-title span { color: var(--primary); }
.topbar-actions { display:flex; gap:0.75rem; align-items:center; }

/* ===== BUTTONS ===== */
.btn {
  padding: 0.55rem 1.25rem; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--glass);
  color: var(--text); font-family: inherit; font-size: 0.8rem;
  font-weight: 600; cursor: pointer; transition: all var(--transition);
  display: inline-flex; align-items: center; gap: 0.5rem;
}
.btn:hover { background: var(--glass-hover); border-color: var(--border-hover); }
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-color: var(--primary-dark); color: #0f172a;
}
.btn-primary:hover { filter: brightness(1.1); box-shadow: 0 4px 20px var(--primary-glow); }
.btn svg { width:16px; height:16px; }

/* ===== WIZARD CONTAINER ===== */
.sizing-container {
  flex: 1;
  padding: 1.5rem 2rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  overflow-y: auto;
}

/* ===== STEPPER ===== */
.wizard-stepper {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 1.25rem 1.5rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(12px);
}

.step-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  cursor: pointer;
  transition: all var(--transition);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.step-item:hover { background: var(--glass-hover); }

.step-number {
  width: 32px; height: 32px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 0.8rem;
  border: 2px solid var(--border);
  color: var(--text-muted);
  transition: all var(--transition);
  flex-shrink: 0;
}

.step-label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
  white-space: nowrap;
}

.step-item.active .step-number {
  background: var(--primary);
  border-color: var(--primary);
  color: #0f172a;
  box-shadow: 0 0 20px var(--primary-glow);
}
.step-item.active .step-label { color: var(--text); font-weight: 600; }

.step-item.completed .step-number {
  background: var(--success);
  border-color: var(--success);
  color: white;
}
.step-item.completed .step-label { color: var(--success); }

.step-connector {
  flex: 1;
  height: 2px;
  background: var(--border);
  margin: 0 0.25rem;
  min-width: 16px;
  transition: background var(--transition);
}
.step-connector.active { background: var(--primary); }

/* ===== STEP PANELS ===== */
.step-panel {
  display: none;
  animation: panelIn 0.35s ease;
}
.step-panel.active { display: block; }

@keyframes panelIn {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ===== FORM CARDS ===== */
.form-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  backdrop-filter: blur(12px);
  margin-bottom: 1rem;
}

.form-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.form-card h3 .card-icon {
  font-size: 1.1rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-group input,
.form-group select {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.85rem;
  color: var(--text);
  font-family: inherit;
  font-size: 0.85rem;
  outline: none;
  transition: all var(--transition);
  width: 100%;
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.form-group select { cursor: pointer; }

.form-group select option {
  background: var(--bg-secondary);
  color: var(--text);
}

.form-hint {
  font-size: 0.65rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ===== QUICK SELECT CARDS ===== */
.quick-select-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.75rem;
}

.quick-select-card {
  background: var(--glass);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
}

.quick-select-card:hover {
  border-color: var(--border-hover);
  background: var(--glass-hover);
  transform: translateY(-2px);
}

.quick-select-card.selected {
  border-color: var(--primary);
  background: var(--primary-glow);
  box-shadow: 0 0 20px var(--primary-glow);
}

.quick-select-card .qs-icon { font-size: 1.5rem; margin-bottom: 0.5rem; }
.quick-select-card .qs-title { font-size: 0.85rem; font-weight: 600; margin-bottom: 0.25rem; }
.quick-select-card .qs-sub { font-size: 0.7rem; color: var(--text-muted); }

/* ===== STEP FOOTER (Navigation) ===== */
.step-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  margin-top: 0.5rem;
}

.btn-lg {
  padding: 0.7rem 2rem;
  font-size: 0.9rem;
}

/* ===== BOM TABLE ===== */
.bom-section {
  margin-bottom: 1.5rem;
}

.bom-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  cursor: pointer;
  transition: all var(--transition);
}

.bom-section-header:hover { background: var(--glass-hover); }

.bom-section-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 0.85rem;
}

.bom-section-title .section-icon {
  font-size: 1rem;
}

.bom-section-total {
  font-weight: 700;
  color: var(--primary);
  font-size: 0.85rem;
}

.bom-section-badge {
  background: var(--glass);
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 600;
}

.bom-table-wrap {
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  overflow: hidden;
}

.bom-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}

.bom-table th {
  text-align: left;
  padding: 0.6rem 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: rgba(0,0,0,0.2);
  border-bottom: 1px solid var(--border);
}

.bom-table th:nth-child(n+3) { text-align: right; }

.bom-table td {
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-dim);
}

.bom-table td:nth-child(n+3) { text-align: right; font-variant-numeric: tabular-nums; }

.bom-table tr:last-child td { border-bottom: none; }

.bom-table tr:hover td { background: var(--glass); color: var(--text); }

.bom-table .item-name { color: var(--text); font-weight: 500; }

.bom-table .supplier-tag {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 0.65rem;
  font-weight: 600;
}

.supplier-EMAT { background: rgba(99,102,241,0.15); color: #818cf8; }
.supplier-MacroSolar { background: rgba(16,185,129,0.15); color: #10b981; }
.supplier-VITEL { background: rgba(56,189,248,0.15); color: #38bdf8; }
.supplier-RBR { background: rgba(245,158,11,0.15); color: #f59e0b; }
.supplier-DELTA { background: rgba(239,68,68,0.15); color: #ef4444; }

/* ===== KPI SUMMARY CARDS ===== */
.bom-kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.bom-kpi {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  backdrop-filter: blur(12px);
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
}

.bom-kpi:hover { border-color: var(--border-hover); transform: translateY(-2px); }

.bom-kpi::after {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--kpi-color, var(--primary));
}

.bom-kpi .kpi-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

.bom-kpi .kpi-value {
  font-size: 1.75rem;
  font-weight: 800;
  margin: 0.25rem 0;
  line-height: 1.2;
}

.bom-kpi .kpi-sub {
  font-size: 0.7rem;
  color: var(--text-dim);
}

/* ===== COMPLIANCE BADGES ===== */
.compliance-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 0.75rem;
  margin-top: 1rem;
}

.compliance-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
}

.compliance-icon {
  width: 28px; height: 28px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.compliance-pass .compliance-icon { background: var(--success-bg); }
.compliance-warn .compliance-icon { background: var(--warning-bg); }
.compliance-fail .compliance-icon { background: var(--danger-bg); }

.compliance-text { flex: 1; }
.compliance-label { font-weight: 600; font-size: 0.8rem; }
.compliance-detail { font-size: 0.7rem; color: var(--text-muted); }

/* ===== ORDER SUMMARY (by supplier) ===== */
.order-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
}

.order-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  backdrop-filter: blur(12px);
}

.order-card-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.order-supplier-name {
  font-weight: 700;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.order-total {
  font-weight: 800;
  color: var(--primary);
  font-size: 1.1rem;
}

.order-items {
  padding: 0.75rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-height: 300px;
  overflow-y: auto;
}

.order-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  padding: 0.35rem 0;
  border-bottom: 1px solid var(--border);
}

.order-item:last-child { border-bottom: none; }

.order-item-name {
  flex: 1;
  color: var(--text-dim);
  margin-right: 0.5rem;
}

.order-item-qty {
  font-weight: 600;
  color: var(--text);
  margin-right: 1rem;
  white-space: nowrap;
}

.order-item-price {
  font-weight: 600;
  color: var(--primary);
  white-space: nowrap;
}

/* ===== DIAGRAM ===== */
.diagram-container {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  backdrop-filter: blur(12px);
  min-height: 300px;
  position: relative;
}

.diagram-container h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.diagram-canvas-wrap {
  background: rgba(255,255,255,0.03);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.diagram-canvas-wrap canvas {
  width: 100%;
  display: block;
}

/* ===== EXPORT BAR ===== */
.export-bar {
  display: flex;
  gap: 0.75rem;
  padding: 1rem 0;
  justify-content: flex-end;
  flex-wrap: wrap;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .wizard-stepper { flex-wrap: wrap; }
  .form-grid { grid-template-columns: 1fr; }
  .bom-kpi-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  .sizing-container { padding: 1rem; }
  .bom-kpi-grid { grid-template-columns: 1fr; }
  .order-grid { grid-template-columns: 1fr; }
  .step-label { display: none; }
}

/* ===== ANIMATIONS ===== */
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 0 0 var(--primary-glow); }
  50% { box-shadow: 0 0 20px 5px var(--primary-glow); }
}

.pulse { animation: pulse-glow 2s infinite; }

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.slide-up { animation: slideUp 0.4s ease forwards; }

/* ===== LOADING SPINNER ===== */
.calculating-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10,15,30,0.85);
  backdrop-filter: blur(8px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 500;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

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

.calc-spinner {
  width: 60px; height: 60px;
  border: 3px solid var(--border);
  border-top: 3px solid var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 1rem;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.calc-text {
  font-size: 1rem;
  font-weight: 600;
  color: var(--primary);
}

.calc-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

/* Toggle switch for storage/ev */
.toggle-switch {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
}

.toggle-switch:hover { border-color: var(--border-hover); }

.toggle-switch.on { border-color: var(--success); background: var(--success-bg); }

.toggle-track {
  width: 40px; height: 22px;
  background: var(--border);
  border-radius: 11px;
  position: relative;
  transition: background var(--transition);
  flex-shrink: 0;
}

.toggle-switch.on .toggle-track { background: var(--success); }

.toggle-thumb {
  width: 18px; height: 18px;
  background: white;
  border-radius: 50%;
  position: absolute;
  top: 2px; left: 2px;
  transition: transform var(--transition);
}

.toggle-switch.on .toggle-thumb { transform: translateX(18px); }

.toggle-label { font-size: 0.85rem; font-weight: 500; }
.toggle-sub { font-size: 0.7rem; color: var(--text-muted); }