/* ════════════════════════════════════════════════════════════════
   Grid Backtester Web — style.css
   Dark Theme — matching V5 desktop color scheme
   BG: #0f1117 | BG2: #1a1d27 | BG3: #242837
   Accent: #1D9E75 | Accent2: #D85A30
   FG: #e8eaf0 | FG2: #8b90a0
═══════════════════════════════════════════════════════════════ */

/* ── Variables ─────────────────────────────────────────────── */
:root {
  --bg:      #0f1117;
  --bg2:     #1a1d27;
  --bg3:     #242837;
  --bg4:     #2e3347;
  --accent:  #1D9E75;
  --accent-hover: #22b886;
  --accent-dim:   rgba(29,158,117,0.15);
  --accent2: #D85A30;
  --accent2-hover: #e96b40;
  --accent2-dim:   rgba(216,90,48,0.15);
  --fg:      #e8eaf0;
  --fg2:     #8b90a0;
  --fg3:     #565c70;
  --border:  rgba(255,255,255,0.07);
  --border2: rgba(255,255,255,0.12);
  --tp-color:#1D9E75;
  --sl-color:#D85A30;
  --long-color: #4da6ff;
  --short-color:#c97bff;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --sidebar-w: 340px;
  --navbar-h:  52px;
  --font: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  --transition: 0.15s ease;
}

/* ── Reset & Base ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 14px; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; }
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg2); }
::-webkit-scrollbar-thumb { background: var(--bg4); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--fg3); }

/* ── Navbar ────────────────────────────────────────────────── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--navbar-h);
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  backdrop-filter: blur(10px);
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 500;
  color: var(--fg);
  letter-spacing: -0.01em;
}
.navbar-brand strong { color: var(--accent); font-weight: 700; }
.navbar-icon {
  width: 20px;
  height: 20px;
  color: var(--accent);
  flex-shrink: 0;
}
.navbar-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  color: var(--fg2);
  font-size: 13px;
  font-weight: 500;
  transition: all var(--transition);
}
.nav-link svg { width: 15px; height: 15px; }
.nav-link:hover { background: var(--bg3); color: var(--fg); }
.nav-link--danger:hover { background: var(--accent2-dim); color: var(--accent2); }

/* ── Flash Messages ────────────────────────────────────────── */
.flash-container { padding: 10px 20px 0; }
.flash {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: 6px;
}
.flash--error   { background: rgba(216,90,48,0.15); border: 1px solid rgba(216,90,48,0.3); color: #ff8a65; }
.flash--success { background: var(--accent-dim);    border: 1px solid rgba(29,158,117,0.3); color: #4caf82; }
.flash--info    { background: rgba(100,120,255,0.12); border: 1px solid rgba(100,120,255,0.3); color: #7c9cff; }

/* ── Main content ──────────────────────────────────────────── */
.main-content {
  display: flex;
  flex-direction: column;
  flex: 1;
}
.footer {
  text-align: center;
  padding: 14px;
  color: var(--fg3);
  font-size: 12px;
  border-top: 1px solid var(--border);
}

/* ── App Layout ────────────────────────────────────────────── */
.app-layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  height: calc(100vh - var(--navbar-h));
  overflow: hidden;
}

/* ── Sidebar ───────────────────────────────────────────────── */
.sidebar {
  background: var(--bg2);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* ── Panel ─────────────────────────────────────────────────── */
.panel {
  border-bottom: 1px solid var(--border);
  padding: 16px;
}
.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.panel-title {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fg2);
}
.panel-title svg { width: 14px; height: 14px; }

/* ── CSV Library ───────────────────────────────────────────── */
.csv-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 240px;
  overflow-y: auto;
}
.csv-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 20px 10px;
  color: var(--fg3);
  font-size: 12px;
  text-align: center;
  line-height: 1.6;
}
.csv-empty svg { width: 32px; height: 32px; opacity: 0.4; }

.csv-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg3);
  cursor: pointer;
  transition: all var(--transition);
}
.csv-item:hover { border-color: var(--border2); background: var(--bg4); }
.csv-item.active {
  border-color: var(--accent);
  background: var(--accent-dim);
}
.csv-item-info { flex: 1; min-width: 0; }
.csv-item-name {
  font-size: 12px;
  font-weight: 500;
  color: var(--fg);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.csv-item-meta {
  font-size: 11px;
  color: var(--fg2);
  margin-top: 2px;
}
.csv-item-tf {
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 2px 6px;
  border-radius: 4px;
  flex-shrink: 0;
}
.csv-item-delete {
  background: none;
  border: none;
  color: var(--fg3);
  padding: 3px;
  border-radius: 4px;
  opacity: 0;
  transition: all var(--transition);
  flex-shrink: 0;
}
.csv-item-delete svg { width: 13px; height: 13px; display: block; }
.csv-item:hover .csv-item-delete { opacity: 1; }
.csv-item-delete:hover { background: var(--accent2-dim); color: var(--accent2); }

/* Upload bar */
.upload-bar {
  height: 3px;
  background: var(--bg3);
  border-radius: 2px;
  margin-bottom: 8px;
  overflow: hidden;
}
.upload-bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.2s ease;
  width: 0%;
}
.status-text {
  font-size: 11px;
  color: var(--fg2);
  margin-bottom: 8px;
}

/* Active file info */
.active-file-info {
  margin-top: 10px;
  padding: 10px;
  border-radius: var(--radius-sm);
  background: var(--bg3);
  border: 1px solid var(--border);
}
.active-file-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.active-file-meta {
  font-size: 11px;
  color: var(--fg2);
  margin-top: 3px;
}
.dirty-warning {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
  padding: 7px 9px;
  border-radius: var(--radius-sm);
  background: rgba(216,90,48,0.12);
  border: 1px solid rgba(216,90,48,0.3);
  color: #ff8a65;
  font-size: 11px;
  line-height: 1.4;
}
.dirty-warning svg { width: 14px; height: 14px; flex-shrink: 0; }

/* ── Parameter Form ────────────────────────────────────────── */
.params-form { display: flex; flex-direction: column; gap: 0; }

.param-group {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.param-group:last-of-type { border-bottom: none; }
.param-group-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--fg3);
  margin-bottom: 8px;
}
.optional { font-weight: 400; text-transform: none; color: var(--fg3); letter-spacing: 0; }
.param-row { display: flex; gap: 8px; }
.param-row--2col > .param-field { flex: 1; }
.param-field { display: flex; flex-direction: column; gap: 4px; margin-bottom: 6px; }
.param-label {
  font-size: 11px;
  font-weight: 500;
  color: var(--fg2);
  display: flex;
  align-items: center;
  gap: 4px;
}
.req { color: var(--accent2); }
.param-hint {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg4);
  color: var(--fg3);
  font-size: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: help;
  flex-shrink: 0;
}
.param-input {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  color: var(--fg);
  padding: 6px 9px;
  font-size: 13px;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  -webkit-appearance: none;
}
.param-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-dim);
}
.param-input::placeholder { color: var(--fg3); }
.param-select { cursor: pointer; }
.param-select option { background: var(--bg2); }
.param-input--date::-webkit-calendar-picker-indicator {
  filter: invert(0.6);
  cursor: pointer;
}
input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button { opacity: 0.4; }

/* ── Buttons ───────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 14px;
  transition: all var(--transition);
  cursor: pointer;
  white-space: nowrap;
}
.btn svg { width: 14px; height: 14px; flex-shrink: 0; }
.btn--primary {
  background: var(--accent);
  color: #fff;
}
.btn--primary:hover:not(:disabled) { background: var(--accent-hover); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(29,158,117,0.35); }
.btn--primary:active:not(:disabled) { transform: none; }
.btn--primary:disabled {
  background: var(--bg4);
  color: var(--fg3);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}
.btn--accent2 {
  background: var(--accent2);
  color: #fff;
}
.btn--accent2:hover { background: var(--accent2-hover); }
.btn--ghost {
  background: var(--bg3);
  border: 1px solid var(--border2);
  color: var(--fg2);
}
.btn--ghost:hover { background: var(--bg4); color: var(--fg); border-color: var(--fg3); }
.btn--sm { font-size: 12px; padding: 5px 10px; }
.btn--run {
  width: 100%;
  padding: 11px;
  font-size: 14px;
  margin-top: 12px;
  border-radius: var(--radius-md);
  letter-spacing: 0.02em;
}
.btn-icon { width: 16px !important; height: 16px !important; }

/* ── Results Area ──────────────────────────────────────────── */
.results-area {
  overflow-y: auto;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  padding: 20px;
  gap: 16px;
}

/* Idle */
.results-idle {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  color: var(--fg2);
  text-align: center;
  padding: 40px;
}
.idle-graphic svg { width: 120px; height: 120px; opacity: 0.7; }
.idle-title { font-size: 20px; font-weight: 600; color: var(--fg); }
.idle-sub { font-size: 13px; line-height: 1.8; color: var(--fg2); }

/* Running */
.results-running {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 40px;
}
.running-indicator { margin-bottom: 8px; }
.spinner-ring {
  width: 52px;
  height: 52px;
  border: 3px solid var(--bg3);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.85s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.running-label {
  font-size: 15px;
  font-weight: 500;
  color: var(--fg);
}
.progress-bar-wrapper {
  width: 100%;
  max-width: 360px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.progress-bar-track {
  flex: 1;
  height: 6px;
  background: var(--bg3);
  border-radius: 3px;
  overflow: hidden;
}
.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-hover));
  border-radius: 3px;
  transition: width 0.3s ease;
  width: 0%;
}
.progress-pct {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  min-width: 38px;
  text-align: right;
}

/* Error */
.results-error {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 40px;
}
.results-error svg {
  width: 48px;
  height: 48px;
  color: var(--accent2);
}
.error-title { font-size: 18px; font-weight: 600; color: var(--accent2); }
.error-msg {
  font-size: 13px;
  color: var(--fg2);
  background: var(--bg2);
  border: 1px solid rgba(216,90,48,0.25);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  max-width: 500px;
  text-align: center;
  font-family: var(--font-mono);
}

/* ── Results Done ──────────────────────────────────────────── */
.results-done {
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex: 1;
}

/* Export bar */
.export-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  flex-wrap: wrap;
}
.export-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fg3);
  margin-right: 4px;
}
.export-bar .btn--accent2 { margin-left: auto; }

/* ── Tabs ──────────────────────────────────────────────────── */
.tabs {
  display: flex;
  gap: 2px;
  background: var(--bg2);
  border-radius: var(--radius-md);
  padding: 4px;
  border: 1px solid var(--border);
}
.tab {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 7px 12px;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--fg2);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}
.tab svg { width: 13px; height: 13px; flex-shrink: 0; }
.tab:hover { color: var(--fg); background: var(--bg3); }
.tab.active { background: var(--accent); color: #fff; }
.tab-badge {
  background: rgba(255,255,255,0.25);
  color: inherit;
  font-size: 10px;
  font-weight: 700;
  padding: 1px 5px;
  border-radius: 10px;
  min-width: 20px;
  text-align: center;
}
.tab-content { flex: 1; display: flex; flex-direction: column; min-height: 0; }
.tab-pane { display: none; flex: 1; flex-direction: column; animation: fadeIn 0.15s ease; }
.tab-pane.active { display: flex; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

/* ── Metrics Grid ──────────────────────────────────────────── */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}
.metric-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: border-color var(--transition);
}
.metric-card:hover { border-color: var(--border2); }
.metric-card.positive { border-left: 3px solid var(--tp-color); }
.metric-card.negative { border-left: 3px solid var(--sl-color); }
.metric-card.neutral  { border-left: 3px solid var(--bg4); }
.metric-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--fg3);
}
.metric-value {
  font-size: 20px;
  font-weight: 700;
  color: var(--fg);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.metric-value.positive { color: var(--tp-color); }
.metric-value.negative { color: var(--sl-color); }
.metric-sub {
  font-size: 11px;
  color: var(--fg2);
  margin-top: 2px;
}

/* Params summary */
.params-summary {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 14px;
}
.params-summary-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--fg3);
  margin-bottom: 10px;
}
.params-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 6px 12px;
}
.param-kv { display: flex; flex-direction: column; gap: 2px; }
.param-k { font-size: 10px; color: var(--fg3); }
.param-v { font-size: 12px; font-weight: 600; color: var(--fg); font-family: var(--font-mono); }

/* ── Chart ─────────────────────────────────────────────────── */
.equity-chart {
  flex: 1;
  min-height: 380px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg2);
  border: 1px solid var(--border);
}

/* ── Trades Table ──────────────────────────────────────────── */
.trades-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-bottom: 12px;
}
.filter-group {
  display: flex;
  align-items: center;
  gap: 4px;
}
.filter-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fg3);
  margin-right: 4px;
}
.filter-btn {
  background: var(--bg2);
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  color: var(--fg2);
  font-size: 12px;
  font-weight: 500;
  padding: 4px 10px;
  cursor: pointer;
  transition: all var(--transition);
}
.filter-btn:hover { background: var(--bg3); color: var(--fg); }
.filter-btn.active { background: var(--bg4); color: var(--fg); border-color: var(--fg3); }
.filter-btn--tp.active { background: var(--accent-dim); color: var(--accent); border-color: var(--accent); }
.filter-btn--sl.active { background: var(--accent2-dim); color: var(--accent2); border-color: var(--accent2); }

.trades-table-wrapper { overflow-x: auto; flex: 1; }
.trades-table { width: 100%; }
.trades-table thead th {
  background: var(--bg2) !important;
  color: var(--fg2) !important;
  font-size: 11px !important;
  font-weight: 600 !important;
  text-transform: uppercase !important;
  letter-spacing: 0.05em !important;
  border-bottom: 1px solid var(--border) !important;
  border-color: var(--border) !important;
  padding: 8px 10px !important;
  white-space: nowrap;
}
table.dataTable tbody td {
  background: var(--bg) !important;
  color: var(--fg) !important;
  border-color: var(--border) !important;
  font-size: 12px;
  padding: 7px 10px !important;
  font-variant-numeric: tabular-nums;
}
table.dataTable tbody tr:hover td { background: var(--bg2) !important; }
table.dataTable.stripe tbody tr.odd td { background: var(--bg) !important; }

.dataTables_wrapper .dataTables_length label,
.dataTables_wrapper .dataTables_filter label,
.dataTables_wrapper .dataTables_info { color: var(--fg2) !important; font-size: 12px !important; }
.dataTables_wrapper .dataTables_length select,
.dataTables_wrapper .dataTables_filter input {
  background: var(--bg2) !important;
  border: 1px solid var(--border2) !important;
  border-radius: var(--radius-sm) !important;
  color: var(--fg) !important;
  padding: 4px 8px !important;
  outline: none !important;
}
.dataTables_wrapper .dataTables_paginate .paginate_button {
  background: var(--bg2) !important;
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-sm) !important;
  color: var(--fg2) !important;
  font-size: 12px !important;
  padding: 3px 8px !important;
  margin: 0 2px !important;
}
.dataTables_wrapper .dataTables_paginate .paginate_button.current {
  background: var(--accent) !important;
  border-color: var(--accent) !important;
  color: #fff !important;
}
.dataTables_wrapper .dataTables_paginate .paginate_button:hover:not(.current) {
  background: var(--bg3) !important;
  color: var(--fg) !important;
}
.badge-side-long  { color: var(--long-color);  font-weight: 600; }
.badge-side-short { color: var(--short-color); font-weight: 600; }
.badge-tp { color: var(--tp-color); font-weight: 700; }
.badge-sl { color: var(--sl-color); font-weight: 700; }
.pnl-pos  { color: var(--tp-color); font-weight: 600; }
.pnl-neg  { color: var(--sl-color); font-weight: 600; }

/* ── Analysis ──────────────────────────────────────────────── */
.analysis-pre {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--fg);
  white-space: pre-wrap;
  word-break: break-word;
  overflow-y: auto;
  flex: 1;
}

/* ── Login Page ────────────────────────────────────────────── */
.login-page {
  min-height: calc(100vh - var(--navbar-h));
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  padding: 20px;
}
.login-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  width: 100%;
  max-width: 360px;
  box-shadow: var(--shadow-lg);
}
.login-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 28px;
}
.login-logo svg { width: 28px; height: 28px; color: var(--accent); }
.login-logo-text { font-size: 20px; font-weight: 700; color: var(--fg); }
.login-logo-text span { color: var(--accent); }
.login-form { display: flex; flex-direction: column; gap: 16px; }
.login-field { display: flex; flex-direction: column; gap: 6px; }
.login-label { font-size: 12px; font-weight: 600; color: var(--fg2); text-transform: uppercase; letter-spacing: 0.06em; }
.login-input {
  background: var(--bg);
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  color: var(--fg);
  padding: 10px 12px;
  font-size: 14px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.login-input:focus { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-dim); }
.login-btn {
  width: 100%;
  padding: 11px;
  font-size: 14px;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: #fff;
  border: none;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: 0.03em;
  transition: all var(--transition);
  margin-top: 8px;
}
.login-btn:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: 0 4px 14px rgba(29,158,117,0.4); }
.login-error {
  padding: 10px 12px;
  background: rgba(216,90,48,0.12);
  border: 1px solid rgba(216,90,48,0.3);
  border-radius: var(--radius-sm);
  color: #ff8a65;
  font-size: 13px;
}

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 900px) {
  .app-layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
    height: auto;
    overflow: visible;
  }
  .sidebar {
    border-right: none;
    border-bottom: 1px solid var(--border);
    max-height: 55vh;
    overflow-y: auto;
  }
  .results-area {
    min-height: 60vh;
  }
  .tabs { overflow-x: auto; }
  :root { --sidebar-w: 100%; }
}

@media (max-width: 600px) {
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .export-bar { gap: 6px; }
  .export-bar .btn--accent2 { margin-left: 0; }
}