:root {
  --bg: #0b0e14;
  --bg-elevated: #121623;
  --bg-card: #161b2c;
  --bg-card-hover: #1c2238;
  --border: #262d42;
  --border-soft: #1d2336;
  --text: #eef1fb;
  --text-dim: #9aa3c0;
  --text-faint: #636d90;
  --accent: #7c5cff;
  --accent-soft: #7c5cff22;
  --accent-2: #22d3d0;
  --green: #34d399;
  --red: #f87171;
  --amber: #fbbf24;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-lg: 0 20px 50px -12px rgba(0,0,0,0.55);
  --shadow-sm: 0 4px 14px -4px rgba(0,0,0,0.4);
  font-size: 15px;
}

* { box-sizing: border-box; }

/* Several elements below (.modal-overlay, .kpi-row, .tabs, .empty-state) set their own
   `display` for when they're visible. That declaration has the same specificity as the
   browser's built-in `[hidden] { display: none }` rule, and ours is defined later, so
   without this it would always win and the `hidden` attribute would be ignored. */
[hidden] { display: none !important; }

html, body {
  margin: 0;
  height: 100%;
  background: radial-gradient(circle at 15% -10%, #1a1f3a 0%, var(--bg) 45%) fixed;
  color: var(--text);
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, "Inter", Roboto, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.app-shell {
  display: grid;
  grid-template-columns: 300px 1fr;
  min-height: 100vh;
}

/* ---------- Sidebar ---------- */

.sidebar {
  background: linear-gradient(180deg, var(--bg-elevated), #0d1120);
  border-right: 1px solid var(--border-soft);
  padding: 24px 18px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px 4px 14px;
}

.brand-logo {
  height: 38px;
  width: auto;
  max-width: 100%;
  display: block;
}

.upload-zone {
  border: 1.5px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 22px 14px;
  text-align: center;
  cursor: pointer;
  transition: border-color .18s ease, background .18s ease, transform .12s ease;
  background: linear-gradient(180deg, rgba(124,92,255,0.04), transparent);
}

.upload-zone:hover, .upload-zone.dragover {
  border-color: var(--accent);
  background: linear-gradient(180deg, rgba(124,92,255,0.12), rgba(124,92,255,0.02));
}

.upload-zone.dragover { transform: scale(1.015); }

.upload-icon {
  color: var(--accent);
  display: flex;
  justify-content: center;
  margin-bottom: 8px;
}

.upload-title { margin: 0; font-weight: 600; font-size: 13.5px; }
.upload-hint { margin: 4px 0 0; font-size: 11.5px; color: var(--text-faint); }

.sidebar-section-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-faint);
  padding: 0 4px;
}

.file-count {
  background: var(--accent-soft);
  color: var(--accent-2);
  border-radius: 999px;
  padding: 1px 8px;
  font-size: 11px;
  font-weight: 700;
}

.file-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
  flex: 1;
  padding-right: 2px;
}

.empty-files {
  color: var(--text-faint);
  font-size: 12.5px;
  padding: 18px 8px;
  text-align: center;
}

.file-card {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  padding: 12px 12px;
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease, transform .1s ease;
  position: relative;
}

.file-card:hover { background: var(--bg-card-hover); transform: translateY(-1px); }

.file-card.active {
  border-color: var(--accent);
  background: linear-gradient(135deg, rgba(124,92,255,0.16), rgba(34,211,208,0.06));
}

.file-card-top {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.file-icon {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: rgba(52, 211, 153, 0.12);
  color: var(--green);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.file-info { min-width: 0; flex: 1; }
.file-name {
  font-size: 12.8px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.file-sub {
  font-size: 11px;
  color: var(--text-faint);
  margin-top: 2px;
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
}

.badge {
  font-size: 9.5px;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 5px;
  letter-spacing: 0.03em;
}
.badge-ok { background: rgba(52,211,153,0.14); color: var(--green); }
.badge-missing { background: rgba(248,113,113,0.14); color: var(--red); }
.badge-sample { background: rgba(251,191,36,0.14); color: var(--amber); }

/* ---------- Main ---------- */

.main {
  padding: 28px 36px 40px;
  overflow-y: auto;
  max-height: 100vh;
}

.page-title {
  margin: 0 0 26px;
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--text), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 22px;
}

.topbar-title h2 {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.topbar-meta {
  margin: 4px 0 0;
  color: var(--text-dim);
  font-size: 13px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: none;
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: filter .15s ease, transform .1s ease, opacity .15s ease;
}
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.35; cursor: not-allowed; }

.btn-danger {
  background: linear-gradient(135deg, #ef4444, #dc2626);
  color: white;
}
.btn-danger:not(:disabled):hover { filter: brightness(1.08); }

.btn-ghost {
  background: var(--bg-card);
  color: var(--text-dim);
  border: 1px solid var(--border);
}
.btn-ghost:hover { color: var(--text); }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #5b3df0);
  color: white;
}

/* KPI cards */

.kpi-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 26px;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.kpi-card::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.5;
  background: linear-gradient(135deg, var(--accent-soft), transparent 60%);
  pointer-events: none;
}

.kpi-label {
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  font-weight: 600;
}

.kpi-value {
  font-size: 22px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.kpi-assets .kpi-value { color: var(--accent-2); }
.kpi-liabilities .kpi-value { color: var(--amber); }
.kpi-equity .kpi-value { color: #a78bfa; }
.kpi-income .kpi-value { color: var(--green); }
.kpi-income.negative .kpi-value { color: var(--red); }

/* Tabs */

.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border-soft);
  margin-bottom: 20px;
}

.tab {
  background: none;
  border: none;
  color: var(--text-faint);
  font-size: 13.5px;
  font-weight: 600;
  padding: 10px 18px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: color .15s ease, border-color .15s ease;
}

.tab:hover { color: var(--text-dim); }
.tab.active { color: var(--text); border-bottom-color: var(--accent); }

/* Warning banner */

.warning-banner {
  background: rgba(251, 191, 36, 0.08);
  border: 1px solid rgba(251, 191, 36, 0.28);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  margin-bottom: 18px;
  font-size: 12.5px;
  color: #f2d38a;
  line-height: 1.5;
}

.warning-banner strong { color: var(--amber); }
.warning-banner ul { margin: 6px 0 0; padding-left: 18px; }
.warning-banner li { margin: 2px 0; }

/* Statement panel */

.statement-panel { min-height: 300px; }

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 90px 20px;
  color: var(--text-faint);
}

.empty-illustration { color: var(--border); margin-bottom: 18px; }

.empty-state h2 {
  font-size: 16px;
  color: var(--text-dim);
  margin: 0 0 8px;
}

.empty-state p { max-width: 380px; font-size: 13px; margin: 0; }

.statement-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.statement-header {
  padding: 20px 26px;
  border-bottom: 1px solid var(--border-soft);
  background: linear-gradient(180deg, rgba(124,92,255,0.06), transparent);
}

.statement-title { font-size: 15px; font-weight: 700; margin: 0; }
.statement-sub { font-size: 12px; color: var(--text-faint); margin: 4px 0 0; }

.statement-scroll { overflow-x: auto; }

table.statement-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

table.statement-table th {
  text-align: right;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-faint);
  padding: 12px 26px;
  border-bottom: 1px solid var(--border-soft);
  white-space: nowrap;
}
table.statement-table th:first-child { text-align: left; }

table.statement-table td {
  padding: 9px 26px;
  border-bottom: 1px solid var(--border-soft);
  white-space: nowrap;
}

table.statement-table td:first-child {
  white-space: normal;
  min-width: 260px;
}

table.statement-table td.num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

tr.row-section td {
  font-weight: 700;
  text-transform: uppercase;
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: var(--accent-2);
  background: rgba(124,92,255,0.05);
  padding-top: 16px;
}

tr.row-item td:first-child { padding-left: 42px; color: var(--text-dim); }
tr.row-item td.num { color: var(--text); }

tr.row-subtotal td, tr.row-total td {
  font-weight: 700;
  border-top: 1px solid var(--border);
  color: var(--text);
}
tr.row-total td { background: rgba(52,211,153,0.05); }

.num.negative { color: var(--red); }

.stmt-empty {
  padding: 60px 20px;
  text-align: center;
  color: var(--text-faint);
  font-size: 13px;
}

/* Modal */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(4,6,12,0.65);
  backdrop-filter: blur(3px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px;
  width: 380px;
  box-shadow: var(--shadow-lg);
}

.modal h3 { margin: 0 0 10px; font-size: 16px; }
.modal p { margin: 0 0 20px; font-size: 13px; color: var(--text-dim); line-height: 1.5; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; }

/* Toasts */

.toast-stack {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 100;
}

.toast {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 13px;
  box-shadow: var(--shadow-lg);
  min-width: 240px;
  animation: toast-in .18s ease;
}
.toast.success { border-left-color: var(--green); }
.toast.error { border-left-color: var(--red); }

@keyframes toast-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 900px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { border-right: none; border-bottom: 1px solid var(--border-soft); }
  .kpi-row { grid-template-columns: repeat(2, 1fr); }
}