:root {
  --bg: #0b132b;
  --surface: #1c2541;
  --surface-hover: #2a3759;
  --text: #edf2f4;
  --text-muted: #b0b9ca;
  --primary: #3a86ff;
  --primary-hover: #2563eb;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --border: rgba(255, 255, 255, 0.12);
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}

/* Login Page */
.login-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 20px;
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.login-card h1 {
  margin: 0 0 8px 0;
  font-size: 24px;
  color: var(--primary);
  text-align: center;
}

.login-card p {
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 24px;
}

/* App Shell */
.app-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 12px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.app-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
}

.user-info {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-bar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
}

.nav-tab {
  padding: 12px 16px;
  color: var(--text-muted);
  font-weight: 600;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  transition: 0.2s;
}

.nav-tab:hover {
  color: var(--text);
}

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

.main-content {
  padding: 24px;
  max-width: 1300px;
  margin: 0 auto;
}

/* Grids & Cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
}

.stat-title {
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 500;
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  margin-top: 8px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 24px;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.card-title {
  font-size: 16px;
  font-weight: 700;
  margin: 0;
}

/* Buttons */
.btn {
  padding: 10px 18px;
  border-radius: 8px;
  border: none;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: 0.2s;
}

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-success { background: var(--success); color: #fff; }
.btn-warning { background: var(--warning); color: #111; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { background: rgba(255,255,255,0.05); }

.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-group-sm { display: flex; gap: 6px; }

/* Forms */
.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: #cbd5e1;
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
}

select.form-control option {
  background-color: #1c2541;
  color: #ffffff;
  padding: 8px 12px;
}

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

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

/* Tables */
.table-container {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.data-table th, .data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

.data-table th {
  background: rgba(0, 0, 0, 0.4);
  color: #94a3b8;
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.data-table tr:hover {
  background: var(--surface-hover);
}

/* Badges */
.badge {
  padding: 5px 10px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: #334155;
  color: #ffffff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.badge-primary { background: var(--primary); color: #ffffff; }
.badge-success { background: var(--success); color: #ffffff; }
.badge-danger { background: var(--danger); color: #ffffff; }
.badge-warning { background: var(--warning); color: #0f172a; font-weight: 800; }
.badge-type { background: #2563eb; color: #ffffff; }

.badge-status-draft { background: #64748b; color: #ffffff; }
.badge-status-pending_approval { background: var(--warning); color: #0f172a; font-weight: 800; }
.badge-status-approved { background: var(--primary); color: #ffffff; }
.badge-status-issued { background: #8b5cf6; color: #ffffff; }
.badge-status-handed_to_driver { background: #0284c7; color: #ffffff; }
.badge-status-in_transit { background: #06b6d4; color: #0f172a; font-weight: 800; }
.badge-status-received { background: var(--success); color: #ffffff; }
.badge-status-rejected { background: var(--danger); color: #ffffff; }

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  padding: 20px;
}

.modal-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  width: 100%;
  max-width: 650px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 24px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.6);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
}

.modal-title {
  font-size: 18px;
  font-weight: 700;
  margin: 0;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 24px;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

/* Toast */
#toastContainer {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  padding: 12px 18px;
  border-radius: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  box-shadow: 0 10px 25px rgba(0,0,0,0.4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-width: 280px;
}

.toast-success { border-left: 4px solid var(--success); }
.toast-error { border-left: 4px solid var(--danger); }
.toast-warning { border-left: 4px solid var(--warning); }
.toast-info { border-left: 4px solid var(--primary); }

.text-muted { color: var(--text-muted); }
.text-center { text-align: center; }
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }

/* Searchable Material Picker - Reference App Recommendation Dropdown */
.searchable-select-wrapper {
  position: relative;
  width: 100%;
}

.searchable-select-input {
  width: 100%;
  padding: 11px 14px 11px 38px;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
  transition: border-color 0.2s, box-shadow 0.2s;
  cursor: text;
}

.searchable-select-input:focus {
  outline: none;
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.searchable-input-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 15px;
  pointer-events: none;
  color: #94a3b8;
}

.searchable-select-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: #182238;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  max-height: 250px;
  overflow-y: auto;
  z-index: 1200;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.7);
}

.searchable-item {
  padding: 10px 14px;
  cursor: pointer;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: background 0.15s ease;
}

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

.searchable-item:hover, .searchable-item.selected {
  background: #2563eb;
}

.searchable-item .item-title-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.searchable-item .item-code {
  font-weight: 700;
  color: #3b82f6;
  font-size: 14px;
  letter-spacing: 0.02em;
}

.searchable-item .item-name {
  font-weight: 600;
  color: #ffffff;
  font-size: 14px;
}

.searchable-item .item-sub {
  font-size: 12px;
  color: #94a3b8;
  margin-top: 3px;
}

.searchable-item:hover .item-code,
.searchable-item:hover .item-name,
.searchable-item:hover .item-sub,
.searchable-item.selected .item-code,
.searchable-item.selected .item-name,
.searchable-item.selected .item-sub {
  color: #ffffff;
}