/* Modern Corporate Fintech Design System */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Color Palette */
  --slate-50: #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;

  --blue-600: #2563eb;
  --blue-700: #1d4ed8;
  --indigo-600: #4f46e5;
  --indigo-700: #4338ca;

  --emerald-50: #ecfdf5;
  --emerald-100: #d1fae5;
  --emerald-600: #059669;
  --emerald-700: #047857;

  --rose-50: #fff1f2;
  --rose-100: #ffe4e6;
  --rose-600: #e11d48;
  --rose-700: #be123c;

  --amber-50: #fffbeb;
  --amber-100: #fef3c7;
  --amber-500: #f59e0b;
  --amber-600: #d97706;

  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--slate-50);
  color: var(--slate-900);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Header & Top Bar */
.navbar {
  background-color: #ffffff;
  border-bottom: 1px solid var(--slate-200);
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 40;
}

.brand-section {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  background: linear-gradient(135deg, var(--slate-900), var(--indigo-700));
  color: #ffffff;
  font-weight: 700;
  font-size: 15px;
  padding: 6px 12px;
  border-radius: var(--radius-md);
  letter-spacing: 0.5px;
}

.brand-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--slate-800);
}

.brand-subtitle {
  font-size: 12px;
  color: var(--slate-500);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.user-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  background-color: var(--slate-100);
  padding: 6px 12px;
  border-radius: var(--radius-md);
}

.sec-pill {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 9999px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.sec-pill.active {
  background-color: var(--emerald-100);
  color: var(--emerald-700);
}
.sec-pill.inactive {
  background-color: var(--amber-100);
  color: var(--amber-700);
  cursor: pointer;
}

/* Layout */
.app-container {
  display: flex;
  height: calc(100vh - 64px);
  overflow: hidden;
}

/* Sidebar: Client Dossier Explorer */
.sidebar {
  width: 320px;
  background-color: #ffffff;
  border-right: 1px solid var(--slate-200);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.sidebar-header {
  padding: 16px;
  border-bottom: 1px solid var(--slate-200);
}

.sidebar-title {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 700;
  color: var(--slate-500);
  margin-bottom: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.search-input {
  width: 100%;
  padding: 8px 12px;
  font-size: 13px;
  border: 1px solid var(--slate-300);
  border-radius: var(--radius-sm);
  outline: none;
}
.search-input:focus {
  border-color: var(--indigo-600);
}

.dossier-tree-view {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
}

.client-node {
  margin-bottom: 8px;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: #ffffff;
}

.client-header {
  padding: 10px 12px;
  background-color: var(--slate-50);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 600;
  font-size: 13px;
  border-bottom: 1px solid transparent;
}
.client-header:hover {
  background-color: var(--slate-100);
}
.client-node.open .client-header {
  border-bottom-color: var(--slate-200);
}

.bank-account-node {
  padding: 8px 12px 8px 24px;
  background-color: #ffffff;
  border-bottom: 1px solid var(--slate-100);
}

.bank-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  background-color: var(--slate-200);
  color: var(--slate-800);
  margin-right: 6px;
}
.bank-badge.MCB { background-color: #fee2e2; color: #991b1b; }
.bank-badge.ABSA { background-color: #fef3c7; color: #92400e; }
.bank-badge.SBM { background-color: #e0f2fe; color: #075985; }

.statement-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 12px 6px 36px;
  font-size: 12px;
  cursor: pointer;
  transition: background 0.15s;
}
.statement-item:hover {
  background-color: var(--slate-50);
}
.statement-item.active {
  background-color: #eef2ff;
  color: var(--indigo-700);
  font-weight: 600;
  border-left: 3px solid var(--indigo-600);
}

/* Status Chips */
.status-chip {
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 9999px;
  text-transform: uppercase;
}
.status-chip.reconciled { background-color: var(--emerald-100); color: var(--emerald-700); }
.status-chip.needs_review { background-color: var(--rose-100); color: var(--rose-700); }
.status-chip.in_review { background-color: var(--amber-100); color: var(--amber-700); }
.status-chip.exported { background-color: var(--slate-200); color: var(--slate-700); }

/* Main Content Area */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background-color: var(--slate-100);
}

/* Upload Drop Zone */
.upload-bar {
  background-color: #ffffff;
  border-bottom: 1px solid var(--slate-200);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.drop-zone {
  flex: 1;
  border: 2px dashed var(--slate-300);
  border-radius: var(--radius-md);
  padding: 12px 20px;
  text-align: center;
  background-color: var(--slate-50);
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}
.drop-zone:hover, .drop-zone.dragover {
  border-color: var(--indigo-600);
  background-color: #eef2ff;
}
.drop-zone-text {
  font-size: 13px;
  color: var(--slate-600);
}

/* Pre-flight Auto-Classification Banner */
.classification-alert {
  background-color: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: var(--radius-md);
  padding: 10px 16px;
  margin: 12px 24px 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: #166534;
  box-shadow: var(--shadow-sm);
}

/* Split-Screen Reviewer */
.split-viewer {
  flex: 1;
  display: flex;
  overflow: hidden;
  padding: 16px 24px;
  gap: 16px;
}

.pane-pdf {
  flex: 1;
  background-color: #ffffff;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.pane-excel {
  flex: 1.2;
  background-color: #ffffff;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.pane-header {
  padding: 12px 16px;
  border-bottom: 1px solid var(--slate-200);
  background-color: var(--slate-50);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.pane-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--slate-700);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Tooltip System */
[data-tooltip] {
  position: relative;
  cursor: help;
}

[data-tooltip]:hover::before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--slate-900);
  color: #ffffff;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 500;
  white-space: nowrap;
  box-shadow: var(--shadow-md);
  z-index: 100;
  pointer-events: none;
}

[data-tooltip]:hover::after {
  content: '';
  position: absolute;
  bottom: 115%;
  left: 50%;
  transform: translateX(-50%);
  border-width: 5px;
  border-style: solid;
  border-color: var(--slate-900) transparent transparent transparent;
  z-index: 100;
}

/* Buttons */
.btn {
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s;
}

.btn-primary {
  background-color: var(--slate-900);
  color: #ffffff;
}
.btn-primary:hover {
  background-color: var(--slate-800);
}

.btn-success {
  background-color: var(--emerald-600);
  color: #ffffff;
}
.btn-success:hover {
  background-color: var(--emerald-700);
}

.btn-outline {
  background-color: #ffffff;
  border-color: var(--slate-300);
  color: var(--slate-700);
}
.btn-outline:hover {
  background-color: var(--slate-50);
}

/* Modal Windows */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(2px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}
.modal-backdrop.show {
  display: flex;
}

.modal-card {
  background-color: #ffffff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 480px;
  overflow: hidden;
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--slate-200);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.modal-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--slate-800);
}

.modal-body {
  padding: 20px;
}

.modal-footer {
  padding: 14px 20px;
  background-color: var(--slate-50);
  border-top: 1px solid var(--slate-200);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

/* Form inputs */
.form-group {
  margin-bottom: 16px;
}
.form-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--slate-700);
  margin-bottom: 6px;
}
.form-control {
  width: 100%;
  padding: 8px 12px;
  font-size: 13px;
  border: 1px solid var(--slate-300);
  border-radius: var(--radius-sm);
  outline: none;
}
.form-control:focus {
  border-color: var(--indigo-600);
}