:root {
  --bg-color: #f1f5f9;
  --bg-panel: rgba(255, 255, 255, 0.85);
  --border-color: rgba(226, 232, 240, 0.8);
  --text-main: #334155;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --accent: #f97316; /* Vibrant Orange for active elements */
  --accent-light: #ffedd5;
  --blue-header: #bfdbfe; /* Excel-like header color */
  --blue-header-light: #eff6ff;
  --gray-bg: #f8fafc;
  --grid-gap: 20px;
  --radius: 12px;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

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

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-color);
  background-image: 
    radial-gradient(at 0% 0%, hsla(253,16%,7%,0.02) 0, transparent 50%), 
    radial-gradient(at 50% 0%, hsla(225,39%,30%,0.03) 0, transparent 50%), 
    radial-gradient(at 100% 0%, hsla(339,49%,30%,0.03) 0, transparent 50%);
  color: var(--text-main);
  height: 100vh;
  overflow: hidden; /* A4 horizontal, no scrolling if fits */
  padding: 20px;
  display: flex;
  flex-direction: column;
}

.layout-grid {
  display: grid;
  grid-template-columns: 70% calc(30% - var(--grid-gap));
  grid-template-rows: minmax(0, 1fr);
  gap: var(--grid-gap);
  flex: 1;
  min-height: 0;
}

.left-col, .right-col {
  display: flex;
  flex-direction: column;
  gap: var(--grid-gap);
  height: 100%;
  min-height: 0;
}

.left-col {
  width: 100%;
}

.report-panel { flex: 6; }
.action-panel { flex: 4; }

.right-col {
  width: 100%;
}

.insights-panel { flex: 6; }
.lessons-panel { flex: 4; }

/* Panels */
.panel {
  background: var(--bg-panel);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 0;
}

.panel-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.5);
}

.panel-header h2 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 1px;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
}

.panel-content {
  padding: 16px 20px;
  flex-grow: 1;
  overflow-y: auto;
  min-height: 0;
}

/* Tables (Spreadsheet style) */
.table-container {
  padding: 0; /* Flush to edges like spreadsheet */
  display: flex;
  flex-direction: column;
}

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

thead th {
  background-color: var(--blue-header);
  color: var(--text-main);
  padding: 10px;
  font-weight: 600;
  border: 1px solid #93c5fd;
}

tbody td {
  padding: 10px;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  background: #fff;
}

/* Spreadsheet striped effect */
tbody tr:nth-child(even) td { background-color: var(--gray-bg); }

/* Report Table specifics */
.report-table tbody td {
  border-color: #cbd5e1;
}
.row-total td {
  background-color: var(--blue-header-light) !important;
  font-weight: bold;
}

/* Actions Table */
.action-table th {
  background-color: transparent;
  color: var(--text-muted);
  border: none;
  border-bottom: 2px solid var(--border-color);
  text-align: left;
}
.action-table td {
  border: none;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
  background: transparent !important;
}

/* Status Select */
.status-select {
  padding: 4px 8px;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  background: var(--gray-bg);
  color: var(--text-main);
  font-family: inherit;
  font-size: 12px;
}

.input-cell {
  width: 100%;
  border: 1px solid transparent;
  background: transparent;
  font-family: inherit;
  font-size: 13px;
  color: var(--text-main);
  padding: 4px;
}
.input-cell:focus {
  border-bottom: 1px solid var(--accent);
  outline: none;
}

/* Buttons */
.icon-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 16px;
  transition: color 0.2s;
}
.icon-btn:hover { color: var(--text-main); }

.btn-text-add {
  background: transparent;
  border: none;
  color: var(--accent);
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
}
.btn-text-add:hover { color: #ea580c; }

.action-btn {
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  padding: 8px 16px;
  border-radius: 6px;
  color: var(--text-main);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  margin: 16px 20px;
  align-self: flex-start;
  transition: 0.2s;
}
.action-btn:hover {
  background: var(--border-color);
}

/* Insights text */
.insights-content {
  font-size: 14px;
  line-height: 1.6;
  white-space: pre-wrap;
  color: var(--text-main);
}
.insight-loading { color: var(--text-muted); font-style: italic; }

/* Transparent Textarea */
.transparent-textarea {
  width: 100%;
  height: 100%;
  border: none;
  resize: none;
  background: transparent;
  font-family: inherit;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-main);
}
.transparent-textarea:focus { outline: none; }

/* MODAL */
.modal {
  display: none; 
  position: fixed; 
  z-index: 100; 
  left: 0;
  top: 0;
  width: 100%;
  height: 100%; 
  background-color: rgba(15, 23, 42, 0.4); 
  backdrop-filter: blur(4px);
  align-items: center;
  justify-content: center;
}

.modal.active {
  display: flex !important;
}

.modal-content {
  background-color: #fff;
  padding: 0;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  box-shadow: 0 10px 25px rgba(0,0,0,0.1);
  display: flex;
  flex-direction: column;
}

.modal-header {
  padding: 16px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.modal-header h3 { font-size: 16px; }
.close {
  color: var(--text-muted);
  font-size: 24px;
  font-weight: bold;
  cursor: pointer;
}
.close:hover { color: #000; }

.modal-body {
  padding: 24px;
  max-height: 70vh;
  overflow-y: auto;
}
.modal-body p { margin-bottom: 12px; font-size: 13px; color: var(--text-muted); }
.modal-textarea {
  width: 100%;
  height: 150px;
  padding: 12px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  font-family: inherit;
  font-size: 14px;
  resize: vertical;
}
.modal-textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-color);
  background: var(--gray-bg);
  text-align: right;
  border-radius: 0 0 var(--radius) var(--radius);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 10px 20px;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}
.btn-primary:hover { background: #ea580c; }

.btn-delete {
  background: #fee2e2;
  color: #dc2626;
  border: none;
  padding: 6px 12px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: 0.2s;
}
.btn-delete:hover { background: #fca5a5; }

.text-green { color: #16a34a; font-weight: 600; margin-left: 4px; }
.text-red { color: #dc2626; font-weight: 600; margin-left: 4px; }

/* Custom Quill Styling */
.ql-toolbar.ql-snow {
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px 8px 0 0;
  background: rgba(255,255,255,0.4);
}
.ql-container.ql-snow {
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-top: none;
  border-radius: 0 0 8px 8px;
  background: rgba(255, 255, 255, 0.2);
  font-family: 'Inter', sans-serif;
  font-size: 14px;
}
.ql-editor {
  min-height: 150px;
}

/* Tab navigation */
.tab-group {
  display: flex;
  gap: 4px;
  background: var(--bg-color);
  padding: 3px;
  border-radius: 8px;
}
.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
}
.tab-btn:hover {
  background: rgba(255,255,255,0.8);
  color: var(--text-main);
}
.tab-btn.active {
  background: #fff;
  color: var(--accent);
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}

/* Stat cards for AFF tab */
.stat-card {
  flex: 1;
  background: var(--blue-header-light);
  border: 1px solid #bfdbfe;
  border-radius: 8px;
  padding: 10px 14px;
  text-align: center;
}
.stat-card .stat-label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}
.stat-card .stat-value {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
}
.stat-card .stat-sub {
  font-size: 11px;
  color: var(--accent);
  margin-top: 2px;
}

.btn-secondary {
  background: var(--bg-panel);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 8px 16px;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
  font-family: inherit;
}
.btn-secondary:hover { background: var(--border-color); }

.status-badge {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
}
.status-primary {
  background: var(--blue-header);
  color: var(--text-main);
}