/* ==============================================================================
   SpendControl-Final Design System
   Professional Corporate / ERP-style UI for Cloud4Green Technologies
   Palette: Light Slate & Clean White with Royal Blue Primary Accent
   ============================================================================== */

:root {
  --bg-app: #f8fafc;
  --bg-card: #ffffff;
  --bg-muted: #f1f5f9;
  --bg-subtle: #f8fafc;
  --border: #e2e8f0;
  --border-focus: #3b82f6;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --primary: #1d4ed8;
  --primary-hover: #1e40af;
  --primary-light: #eff6ff;
  --success: #059669;
  --success-bg: #ecfdf5;
  --warning: #d97706;
  --warning-bg: #fffbeb;
  --danger: #dc2626;
  --danger-bg: #fef2f2;
  --info: #0284c7;
  --info-bg: #f0f9ff;
  --purple: #7c3aed;
  --purple-bg: #f5f3ff;
  --sidebar-w: 240px;
  --header-h: 64px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-app);
  color: var(--text-main);
  line-height: 1.5;
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* ==============================================================================
   Layout Architecture
   ============================================================================== */

.app-root {
  display: flex;
  min-height: 100vh;
}

.main-wrapper {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
  margin-left: var(--sidebar-w);
}

/* Sidebar */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-w);
  background-color: #ffffff;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 50;
  transition: transform 0.2s ease;
}

.sidebar-header {
  height: var(--header-h);
  padding: 12px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--border);
}

.sidebar-logo {
  height: 38px;
  width: auto;
  object-fit: contain;
}

.sidebar-brand-text {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.sidebar-brand-subtitle {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 500;
}

.sidebar-nav {
  flex: 1;
  padding: 16px 10px;
  overflow-y: auto;
}

.nav-section-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-light);
  padding: 6px 12px;
  margin-top: 10px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-weight: 500;
  font-size: 13px;
  margin-bottom: 2px;
  transition: background-color 0.15s, color 0.15s;
  cursor: pointer;
  text-decoration: none;
}

.nav-item:hover {
  background-color: var(--bg-muted);
  color: var(--text-main);
}

.nav-item.active {
  background-color: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
}

.nav-item svg {
  width: 18px;
  height: 18px;
  stroke-width: 2;
  flex-shrink: 0;
}

.sidebar-footer {
  padding: 14px 16px;
  border-top: 1px solid var(--border);
  background-color: #fafbfc;
}

.user-snippet {
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background-color: var(--primary);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 13px;
  flex-shrink: 0;
}

.user-meta {
  flex: 1;
  min-width: 0;
}

.user-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-role-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 4px;
  text-transform: uppercase;
}

.role-admin {
  background-color: #dbeafe;
  color: #1e40af;
}

.role-employee {
  background-color: #f1f5f9;
  color: #475569;
}

.btn-logout {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-logout:hover {
  color: var(--danger);
  background-color: var(--danger-bg);
}

/* Header */
.top-header {
  height: var(--header-h);
  background-color: #ffffff;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 40;
}

.header-title-area h1 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.header-subtitle {
  font-size: 12px;
  color: var(--text-muted);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--border);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

/* Content Area */
.content-area {
  flex: 1;
  padding: 24px;
}

/* Footer */
.app-footer {
  background-color: #ffffff;
  border-top: 1px solid var(--border);
  padding: 20px 24px;
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.6;
  text-align: center;
  margin-top: auto;
}

.footer-brand {
  font-weight: 600;
  color: var(--text-main);
}

.footer-contact, .footer-address, .footer-copy {
  margin-top: 3px;
}

/* ==============================================================================
   Components & Cards
   ============================================================================== */

.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  margin-bottom: 20px;
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: #ffffff;
}

.card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
}

.card-body {
  padding: 20px;
}

/* Stat Grid */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background-color: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: #cbd5e1;
}

.stat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.stat-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.stat-icon {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.stat-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.2;
}

.stat-sub {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

.stat-accent-blue .stat-icon { background-color: #eff6ff; color: #1d4ed8; }
.stat-accent-amber .stat-icon { background-color: #fffbeb; color: #d97706; }
.stat-accent-green .stat-icon { background-color: #ecfdf5; color: #059669; }
.stat-accent-red .stat-icon { background-color: #fef2f2; color: #dc2626; }
.stat-accent-purple .stat-icon { background-color: #f5f3ff; color: #7c3aed; }

/* ==============================================================================
   Compact Corporate Tables
   ============================================================================== */

.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  text-align: left;
}

.data-table th {
  background-color: #f8fafc;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 12px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.data-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.data-table tbody tr {
  transition: background-color 0.12s;
  cursor: pointer;
}

.data-table tbody tr:hover {
  background-color: #f8fafc;
}

.data-table tbody tr:active {
  background-color: #f1f5f9;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: 9999px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.badge-draft { background-color: #f1f5f9; color: #475569; }
.badge-submitted { background-color: #fef3c7; color: #92400e; }
.badge-under_review { background-color: #f5f3ff; color: #6b21a8; }
.badge-approved { background-color: #d1fae5; color: #065f46; }
.badge-rejected { background-color: #fee2e2; color: #991b1b; }
.badge-paid { background-color: #dbeafe; color: #1e40af; }
.badge-reimbursed { background-color: #e0e7ff; color: #3730a3; }
.badge-active { background-color: #d1fae5; color: #065f46; }
.badge-inactive { background-color: #f1f5f9; color: #64748b; }
.badge-pending { background-color: #fef3c7; color: #92400e; }
.badge-processing { background-color: #dbeafe; color: #1e40af; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.15s, border-color 0.15s, color 0.15s, transform 0.1s;
  border: 1px solid transparent;
  text-decoration: none;
  line-height: 1.25;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
}

.btn-secondary {
  background-color: #ffffff;
  border-color: var(--border);
  color: var(--text-main);
}

.btn-secondary:hover {
  background-color: var(--bg-muted);
  border-color: #cbd5e1;
}

.btn-danger {
  background-color: var(--danger);
  color: #ffffff;
}

.btn-danger:hover {
  background-color: #b91c1c;
}

.btn-success {
  background-color: var(--success);
  color: #ffffff;
}

.btn-success:hover {
  background-color: #047857;
}

.btn-sm {
  padding: 5px 10px;
  font-size: 12px;
}

.btn-icon {
  padding: 6px;
  border-radius: var(--radius-sm);
}

/* Filter bar */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  background-color: #ffffff;
  border-bottom: 1px solid var(--border);
}

.search-box {
  position: relative;
  flex: 1;
  min-width: 200px;
}

.search-box input {
  width: 100%;
  padding: 7px 12px 7px 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  background-color: #ffffff;
  color: var(--text-main);
  outline: none;
}

.search-box input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.15);
}

.search-icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  width: 14px;
  height: 14px;
  color: var(--text-light);
}

.filter-select {
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  background-color: #ffffff;
  color: var(--text-main);
  outline: none;
  cursor: pointer;
}

.filter-select:focus {
  border-color: var(--border-focus);
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
}

.empty-state-icon {
  width: 44px;
  height: 44px;
  margin: 0 auto 12px;
  color: var(--text-light);
}

.empty-state-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 4px;
}

.empty-state-desc {
  font-size: 13px;
  margin-bottom: 16px;
}

/* ==============================================================================
   Subtle 3D Login Visual & Login Page
   ============================================================================== */

.login-screen {
  min-height: 100vh;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  padding: 24px;
}

.login-container {
  width: min(440px, 100%);
  background-color: #ffffff;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 36px 32px;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.03);
  text-align: center;
}

/* EXACTLY ONE subtle 3D element: 3D Expense / Wallet Card */
.subtle-3d-wrapper {
  perspective: 900px;
  width: 100%;
  display: flex;
  justify-content: center;
  margin-bottom: 24px;
}

.subtle-3d-card {
  width: 220px;
  height: 125px;
  background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 60%, #172554 100%);
  border-radius: 12px;
  padding: 14px 16px;
  color: #ffffff;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transform: rotateX(12deg) rotateY(-14deg);
  transform-style: preserve-3d;
  box-shadow: -10px 18px 25px rgba(29, 78, 216, 0.28), 0 4px 6px rgba(0,0,0,0.1);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  cursor: default;
}

.subtle-3d-card:hover {
  transform: rotateX(4deg) rotateY(-4deg) translateY(-4px);
  box-shadow: -6px 22px 30px rgba(29, 78, 216, 0.35);
}

.card-3d-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-3d-chip {
  width: 30px;
  height: 22px;
  background: linear-gradient(135deg, #fbbf24 0%, #d97706 100%);
  border-radius: 4px;
  box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.4);
}

.card-3d-brand {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  opacity: 0.9;
}

.card-3d-number {
  font-family: monospace;
  font-size: 13px;
  letter-spacing: 0.15em;
  opacity: 0.85;
}

.card-3d-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 10px;
  opacity: 0.8;
  text-transform: uppercase;
}

.login-header h1 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.login-header p {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
  margin-bottom: 24px;
}

.login-form {
  text-align: left;
}

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

.form-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text-main);
  background-color: #ffffff;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-control:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.15);
}

.login-btn {
  width: 100%;
  height: 42px;
  margin-top: 8px;
}

.divider {
  display: flex;
  align-items: center;
  text-align: center;
  margin: 20px 0;
  color: var(--text-light);
  font-size: 12px;
}

.divider::before, .divider::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid var(--border);
}

.divider span {
  padding: 0 10px;
}

.btn-entra {
  width: 100%;
  height: 42px;
  background-color: #ffffff;
  border: 1px solid var(--border);
  color: #0f172a;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color 0.15s;
}

.btn-entra:hover {
  background-color: var(--bg-muted);
}

.ms-logo-icon {
  width: 18px;
  height: 18px;
}

/* ==============================================================================
   Modals & Lightbox
   ============================================================================== */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 16px;
}

.modal-backdrop.hidden {
  display: none !important;
}

.modal-dialog {
  background-color: #ffffff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: min(600px, 100%);
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: modalIn 0.18s ease-out;
}

.modal-dialog.modal-lg {
  width: min(780px, 100%);
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.96) translateY(8px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
}

.modal-close {
  background: none;
  border: none;
  font-size: 22px;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
}

.modal-close:hover {
  color: var(--text-main);
}

.modal-body {
  padding: 20px;
  overflow-y: auto;
}

.modal-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  background-color: #fafbfc;
}

/* Lightbox */
.lightbox-content {
  position: relative;
  max-width: 90vw;
  max-height: 85vh;
  background-color: #ffffff;
  border-radius: var(--radius-md);
  padding: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.lightbox-content img {
  max-width: 100%;
  max-height: 70vh;
  object-fit: contain;
  border-radius: 4px;
}

.lightbox-close {
  position: absolute;
  top: -12px;
  right: -12px;
  background-color: #ffffff;
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 32px;
  height: 32px;
  cursor: pointer;
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
}

.lightbox-footer {
  margin-top: 12px;
}

/* Detail view item */
.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px 20px;
}

.detail-item {
  display: flex;
  flex-direction: column;
}

.detail-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.detail-value {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-main);
}

.detail-amount {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
}

.receipt-preview-box {
  margin-top: 16px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background-color: var(--bg-muted);
}

.receipt-img-thumbnail {
  max-height: 180px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: transform 0.15s;
}

.receipt-img-thumbnail:hover {
  transform: scale(1.02);
}

/* Toast notifications */
.toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 9999;
}

.toast {
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  background-color: #ffffff;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  font-size: 13px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
  animation: toastIn 0.2s ease-out;
  min-width: 260px;
  max-width: 400px;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

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

/* Responsive adjustments */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .main-wrapper {
    margin-left: 0;
  }
  .mobile-menu-btn {
    display: inline-flex;
  }
  .stat-grid {
    grid-template-columns: 1fr 1fr;
  }
  .detail-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .stat-grid {
    grid-template-columns: 1fr;
  }
  .filter-bar {
    flex-direction: column;
    align-items: stretch;
  }
}