/* Theme variables */
:root {
  --bg: #0e1421;
  --panel: #141c2c;
  --elev: #1b2538;
  --muted: #aab3ce;
  --text: #f3f6ff;
  --accent: #2c75ff;
  --accent-light: #5b95ff;
  --accent-dark: #1f59d8;
  --accent-2: #3e82ff;
  --border: #33405a;
  --danger: #f7768e;
  --brand-cloud-color: #2c75ff;
  --btn-hover-bg: rgba(44, 117, 255, 0.16);
  --btn-hover-border: rgba(44, 117, 255, 0.45);
  --btn-hover-shadow: rgba(44, 117, 255, 0.16);
  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Inter, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";

  /* Table + chat specifics */
  --th-bg: #25324a;
  --th-fg: #f4f7ff;
  --th-sticky-bg: #1f293d;
  --th-sticky-fg: #e0e6fb;
  --row-base: #182336;
  --row-alt: #1d2940;
  --row-hover: #233552;
  --selected-bg: rgba(44, 117, 255, 0.24);
  --selected-outline: rgba(44, 117, 255, 0.7);
  --chat-user-bg: #1c2538;
  --chat-assistant-bg: #161f2f;

  /* Layout tweaks */
  --divider: 6px;
  --side: 420px;
}

/* Light theme overrides */
:root.theme-light {
  --bg: #f7f9fc;
  --panel: #ffffff;
  --elev: #f2f5fb;
  --muted: #667085;
  --text: #111827;
  --accent: #2c75ff;
  --accent-light: #5090ff;
  --accent-dark: #1f59d8;
  --accent-2: #3e82ff;
  --brand-cloud-color: #2c75ff;
  --btn-hover-bg: rgba(44, 117, 255, 0.12);
  --btn-hover-border: rgba(44, 117, 255, 0.38);
  --btn-hover-shadow: rgba(44, 117, 255, 0.18);
  --border: #e4e7ec;
  --danger: #ef4444;

  --th-bg: #f8fafc;
  --th-fg: #475569;
  --th-sticky-bg: #f1f5f9;
  --th-sticky-fg: #334155;
  --row-base: #ffffff;
  --row-alt: #f7fafc;
  --row-hover: #f0f4ff;
  --selected-bg: rgba(44, 117, 255, 0.16);
  --selected-outline: rgba(44, 117, 255, 0.55);
  --chat-user-bg: #e8f0fe;
  --chat-assistant-bg: #f3f4f7;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  display: grid;
  grid-template-rows: auto 1fr; /* header + content */
  height: 100vh;
  overflow: hidden; /* prevent page scroll; panels scroll instead */
}

.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 16px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 8px; }
.logo { width: 30px; height: 30px; display: block; }
.logo .face-dark { fill: var(--accent-dark); }
.logo .face-mid { fill: var(--accent); }
.logo .face-light { fill: var(--accent-light); }
.brand-text { display: flex; align-items: center; gap: 8px; font-size: 15px; color: var(--text); font-weight: 600; letter-spacing: 0.25px; text-transform: none; }
.brand-name { font-size: 16px; font-weight: 700; color: var(--text); letter-spacing: 0.35px; display: inline-flex; align-items: center; gap: 6px; }
.brand-cloud { color: var(--brand-cloud-color); }

.actions { display: flex; align-items: center; gap: 8px; }
.divider { width: 1px; height: 24px; background: var(--border); margin: 0 6px; }

.btn {
  height: 32px;
  padding: 0 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--elev);
  color: var(--text);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  font-size: 13px;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}
.btn:not(.primary):not(.danger):hover,
.btn:not(.primary):not(.danger):focus-visible {
  background: var(--btn-hover-bg);
  border-color: var(--btn-hover-border);
  color: var(--text);
  box-shadow: 0 0 0 1px var(--btn-hover-border);
}
.btn:focus-visible {
  outline: 2px solid var(--btn-hover-border);
  outline-offset: 2px;
}
.btn:active { transform: translateY(1px); }
.btn-ghost { background: transparent; }
.btn.primary {
  background: linear-gradient(180deg, #2f7eff, #1f5ad8);
  border-color: rgba(44, 117, 255, 0.65);
  color: #f6f9ff;
}
.theme-light .btn.primary {
  background: linear-gradient(180deg, #2c75ff, #1f59d8);
  border-color: rgba(44, 117, 255, 0.7);
  color: #ffffff;
}
.btn.primary:hover,
.btn.primary:focus-visible {
  background: linear-gradient(180deg, #3a85ff, #1f59d8);
  border-color: rgba(44, 117, 255, 0.8);
  color: #ffffff;
  box-shadow: 0 0 0 1px rgba(44, 117, 255, 0.45);
}
.theme-light .btn.primary:hover,
.theme-light .btn.primary:focus-visible {
  background: linear-gradient(180deg, #3a85ff, #1f59d8);
  border-color: rgba(44, 117, 255, 0.85);
}
.btn.primary:focus-visible {
  outline: 2px solid rgba(44, 117, 255, 0.55);
  outline-offset: 2px;
}
.btn.danger {
  background: linear-gradient(180deg, #b91c1c, #7f1d1d);
  border-color: rgba(185,28,28,0.85);
  color: #fff;
}
.btn.danger:hover,
.btn.danger:focus-visible {
  background: linear-gradient(180deg, #d62d2d, #962020);
  border-color: rgba(220, 38, 38, 0.85);
  box-shadow: 0 6px 20px rgba(220, 38, 38, 0.25);
  color: #fff;
}
.btn.danger:focus-visible {
  outline: 2px solid rgba(220, 38, 38, 0.6);
  outline-offset: 2px;
}
.icon-btn {
  background: transparent;
  color: var(--muted);
  border: 1px solid transparent;
  border-radius: 6px;
  font-size: 18px;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}
.icon-btn:hover,
.icon-btn:focus-visible {
  background: var(--btn-hover-bg);
  border-color: var(--btn-hover-border);
  color: var(--text);
  box-shadow: 0 0 0 1px var(--btn-hover-border);
}
.icon-btn:focus-visible {
  outline: 2px solid var(--btn-hover-border);
  outline-offset: 2px;
}

/* Make dropdown usable inside chat actions as well */
.chat-actions .dropdown .menu { right: 0; left: auto; }

.select { height: 32px; padding: 0 8px; border-radius: 8px; border: 1px solid var(--border); background: var(--elev); color: var(--text); }
.select.compact { height: 28px; font-size: 12px; border-radius: 6px; padding: 0 8px; }

/* Toggle switches */
.toggle-switch { width: 44px; height: 24px; border-radius: 999px; border: 1px solid var(--border); background: var(--elev); position: relative; padding: 0; display: inline-flex; align-items: center; justify-content: flex-start; transition: background 0.2s ease, border-color 0.2s ease; }
.toggle-switch::after { content: ''; position: absolute; top: 50%; left: 2px; width: 20px; height: 20px; border-radius: 50%; background: var(--muted); transform: translate(0, -50%); transition: transform 0.2s ease, background 0.2s ease; }
.toggle-switch.is-on { background: var(--accent); border-color: var(--accent); }
.toggle-switch.is-on::after { transform: translate(20px, -50%); background: #fff; }

/* Theme toggle overrides */
#btnTheme.toggle-switch { background: #1c2230; border-color: #1c2230; }
#btnTheme.toggle-switch::after { background: #d1d5db; }
#btnTheme.toggle-switch.is-light { background: #e5e7eb; border-color: #e5e7eb; }
#btnTheme.toggle-switch.is-light::after { transform: translate(20px, -50%); background: #111827; }

/* Dropdown menu for plans */
.dropdown { position: relative; }
.menu { position: absolute; top: 100%; left: 0; min-width: 220px; background: var(--panel); border: 1px solid var(--border); border-radius: 8px; box-shadow: 0 10px 30px rgba(0,0,0,0.4); padding: 6px; display: none; z-index: 20; max-height: 60vh; overflow: auto; }
.menu.show { display: block; }
.menu-item { display: grid; grid-template-columns: 1fr auto; gap: 8px; align-items: center; padding: 8px; border-radius: 6px; cursor: pointer; }
.menu-item:hover { background: var(--elev); }
.menu-item.active { background: var(--elev); }
.menu-item.disabled { opacity: 0.5; cursor: not-allowed; pointer-events: auto; }
.menu-item.disabled:hover { background: transparent; }
.menu-item .name { font-size: 13px; color: var(--text); }
.menu-item .actions { display: flex; gap: 6px; }
.menu-item .icon-btn { width: 24px; height: 24px; border: 1px solid var(--border); border-radius: 6px; background: transparent; color: var(--muted); font-size: 14px; display: inline-flex; align-items: center; justify-content: center; }
.menu-item .icon-btn:hover,
.menu-item .icon-btn:focus-visible {
  background: rgba(220, 38, 38, 0.16);
  border-color: var(--danger);
  color: var(--danger);
  box-shadow: 0 4px 12px rgba(220, 38, 38, 0.25);
}

.layout { display: grid; grid-template-columns: 1fr var(--divider) var(--side); gap: 0; height: auto; min-height: 0; }
.grid-panel { display: grid; grid-template-rows: auto 1fr; border-right: 1px solid var(--border); min-height: 0; position: relative; }
.statusbar { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 8px 12px; color: var(--muted); border-bottom: 1px solid var(--border); background: var(--panel); font-size: 12px; position: relative; }
.statusbar .status-left { display: inline-flex; align-items: center; gap: 10px; }
.status-controls { display: flex; align-items: center; gap: 6px; }
.btn.subtle {
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 999px;
  border-color: rgba(255, 255, 255, 0.08);
  color: var(--muted);
  transition: background 0.2s ease, color 0.2s ease, border 0.2s ease, box-shadow 0.2s ease;
}
.btn.subtle:hover,
.btn.subtle:focus-visible {
  background: var(--btn-hover-bg);
  color: var(--text);
  border-color: var(--btn-hover-border);
  box-shadow: 0 0 0 1px var(--btn-hover-border);
}
:root.theme-light .btn.subtle { border-color: rgba(0, 0, 0, 0.08); }
.agg-controls { display: inline-flex; align-items: center; gap: 6px; }
.agg-controls label { color: var(--muted); }
.agg-controls .btn { transition: background 0.2s ease, border 0.2s ease, box-shadow 0.2s ease, color 0.2s ease; }
.agg-controls .btn.disabled,
.agg-controls .btn[aria-disabled="true"],
.agg-controls .btn.disabled:hover,
.agg-controls .btn[aria-disabled="true"]:hover { background: transparent; border-color: var(--border); box-shadow: none; color: var(--muted); }
.agg-controls .btn.disabled { cursor: not-allowed; opacity: 0.7; }
.agg-controls .btn[aria-disabled="true"] { cursor: not-allowed; opacity: 0.7; }

.grid { overflow: auto; background: var(--panel); position: relative; }
.grid-inner { transform-origin: top left; will-change: transform; }
.table { border-collapse: separate; border-spacing: 0; width: 100%; }
.th, .td { border-bottom: 1px solid var(--border); border-right: 1px solid var(--border); padding: 6px 10px; font-size: 13px; }
.th { position: sticky; top: 0; background: var(--th-bg); color: var(--th-fg); z-index: 2; }
.th:first-child, .td:first-child { position: sticky; left: 0; background: var(--th-sticky-bg); z-index: 1; color: var(--th-sticky-fg); }
.tr:nth-child(odd) .td { background: var(--row-base); }
.tr:nth-child(even) .td { background: var(--row-alt); }
.tr:hover .td { background: var(--row-hover); }
.td { position: relative; }
.td.selected {
  background: var(--selected-bg);
  outline: none;
}
.td.selected::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid var(--selected-outline);
  pointer-events: none;
  border-radius: 2px;
}
.td.anchor::after {
  border-width: 2px;
  border-color: var(--accent);
}
.td:focus {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--accent-2);
}
.td.editing { outline: none !important; }
.td.num { text-align: right; font-variant-numeric: tabular-nums; }
.cell-content[contenteditable="true"] { outline: none; border: none; box-shadow: none; }
.td.editing .cell-plus { display: none; }
.cell-content { min-height: 18px; }
/* Subtle colourful headings (opt-in via .header-colors-on on :root) */
:root {
  /* Dark theme: use solid, slightly brighter tints (no transparency) */
  --hdr-product-bg: #2f4882;   /* blue tint */
  --hdr-location-bg: #2a6249;  /* green tint */
  --hdr-measure-bg: #5c3d1f;   /* amber tint */
  --hdr-time-bg: #3b2a74;      /* purple tint */
  --hdr-index-bg: #27324b;     /* grey tint */
}
:root.theme-light {
  /* Light theme: solid, subtle pastel tints (no transparency) */
  --hdr-product-bg: #e9efff;  /* soft blue */
  --hdr-location-bg: #eaf7ef; /* soft green */
  --hdr-measure-bg: #fdf3df;  /* soft amber */
  --hdr-time-bg: #f3e8ff;     /* soft purple */
  --hdr-index-bg: #eef2f6;    /* soft grey */
}

:root.header-colors-on .grid .th.th-col.cat-product { background: var(--hdr-product-bg) !important; }
:root.header-colors-on .grid .th.th-col.cat-location { background: var(--hdr-location-bg) !important; }
:root.header-colors-on .grid .th.th-col.cat-measure { background: var(--hdr-measure-bg) !important; }
:root.header-colors-on .grid .th.th-col.cat-time { background: var(--hdr-time-bg) !important; }
:root.header-colors-on .grid .th.th-row { background: var(--hdr-index-bg) !important; color: var(--th-sticky-fg); }
:root.header-colors-on .grid .th.th-corner { background: var(--hdr-index-bg) !important; }
.grid .td.grand-total { background: var(--hdr-measure-bg); font-weight: 600; color: var(--text); }

/* Wijmo header colours */
.wj-flexgrid-host .wj-cell.grand-total { background: var(--hdr-measure-bg); font-weight: 600; color: var(--text); }
:root.header-colors-on .wj-flexgrid-host .wj-colheaders .wj-header.wj-cat.cat-product { background: var(--hdr-product-bg) !important; }
:root.header-colors-on .wj-flexgrid-host .wj-colheaders .wj-header.wj-cat.cat-location { background: var(--hdr-location-bg) !important; }
:root.header-colors-on .wj-flexgrid-host .wj-colheaders .wj-header.wj-cat.cat-measure { background: var(--hdr-measure-bg) !important; }
:root.header-colors-on .wj-flexgrid-host .wj-colheaders .wj-header.wj-cat.cat-time { background: var(--hdr-time-bg) !important; }
:root.header-colors-on .wj-flexgrid-host .wj-rowheaders .wj-header.wj-cat.cat-index { background: var(--hdr-index-bg) !important; }
:root.header-colors-on .wj-flexgrid-host .wj-cell.grand-total { background: var(--hdr-measure-bg) !important; font-weight: 600; color: var(--text); }
.cell-plus {
  position: absolute;
  top: 2px;
  right: 2px;
  width: 18px;
  height: 18px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--elev);
  color: var(--muted);
  font-size: 14px;
  line-height: 16px;
  padding: 0;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  opacity: 0.9;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}
.cell-plus:hover,
.cell-plus:focus-visible {
  background: var(--btn-hover-bg);
  border-color: var(--btn-hover-border);
  color: var(--text);
  box-shadow: 0 0 0 1px var(--btn-hover-border);
}
.cell-plus:focus-visible {
  outline: 2px solid var(--btn-hover-border);
  outline-offset: 2px;
}
/* Range plus */
.range-plus {
  position: absolute;
  width: 22px;
  height: 22px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--elev);
  color: var(--muted);
  font-size: 14px;
  line-height: 20px;
  padding: 0;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  z-index: 5;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}
.range-plus:hover,
.range-plus:focus-visible {
  background: var(--btn-hover-bg);
  border-color: var(--btn-hover-border);
  color: var(--text);
  box-shadow: 0 0 0 1px var(--btn-hover-border);
}
.range-plus:focus-visible {
  outline: 2px solid var(--btn-hover-border);
  outline-offset: 2px;
}
.btn.disabled,
.btn[aria-disabled="true"],
.btn:disabled { cursor: not-allowed; opacity: 0.6; box-shadow: none !important; }
.btn.disabled:hover,
.btn[aria-disabled="true"]:hover,
.btn:disabled:hover { background: inherit; color: inherit; }

.side-panel { display: grid; grid-template-rows: auto 1fr; background: var(--panel); min-height: 0; }
.tabs { display: flex; gap: 6px; padding: 8px; border-bottom: 1px solid var(--border); }
.tabs .spacer { flex: 1; }
.tabs .btn.subtle { margin-left: 4px; }
.tab {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 10px;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}
.tab:hover,
.tab:focus-visible {
  background: var(--btn-hover-bg);
  border-color: var(--btn-hover-border);
  color: var(--text);
  box-shadow: 0 0 0 1px var(--btn-hover-border);
}
.tab:focus-visible {
  outline: 2px solid var(--btn-hover-border);
  outline-offset: 2px;
}
.tab.active {
  color: var(--text);
  background: var(--elev);
  border-color: var(--btn-hover-border);
}
.panel-body { overflow: hidden; position: relative; min-height: 0; }
.tabcontent { display: none; height: 100%; overflow: auto; padding: 12px; min-height: 0; }
.tabcontent.active { display: block; }
/* Ensure chat input is pinned; only history scrolls */
#tab-chat { display: grid; grid-template-rows: auto 1fr; overflow: hidden; }
#tab-chat .chat { min-height: 0; }
#tab-chat .chat-history { min-height: 0; overflow: auto; }
/* Keep chat actions and input visible */
#tab-chat .chat-actions { position: sticky; top: 0; z-index: 2; background: var(--panel); padding-top: 4px; padding-bottom: 8px; border-bottom: 1px solid var(--border); }
#tab-chat .chat .chat-input { position: sticky; bottom: 0; z-index: 2; background: var(--panel); padding-top: 8px; border-top: 1px solid var(--border); }

.prose { white-space: pre-wrap; line-height: 1.5; color: var(--text); }
.prose h3 { margin: 10px 0 6px; color: var(--text); }
.prose, .msg { overflow-wrap: anywhere; word-break: break-word; }
.msg pre, .prose pre { white-space: pre-wrap; overflow: auto; }
.msg img, .prose img { max-width: 100%; height: auto; }

/* Chat */
.chat-actions { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; flex-wrap: wrap; }
.chat { display: flex; flex-direction: column; height: 100%; gap: 8px; }
.chat-history { flex: 1; overflow: auto; display: flex; flex-direction: column; gap: 8px; }
.toggle { display: inline-flex; align-items: center; gap: 8px; color: var(--muted); margin-right: auto; }
.kb-toggle span { font-size: 13px; }
.field.toggle-field { display: flex; align-items: center; gap: 10px; }
.field.toggle-field .toggle-switch { flex-shrink: 0; }
.field.toggle-field .toggle-text { font-size: 13px; line-height: 1.4; color: var(--text); flex: 1; }
.msg { padding: 8px 10px; border-radius: 8px; border: 1px solid var(--border); max-width: 90%; }
.msg.user { background: var(--chat-user-bg); align-self: flex-end; }
.msg.assistant { background: var(--chat-assistant-bg); align-self: flex-start; }
.msg.assistant { line-height: 1.5; }
.msg.assistant p { margin: 0 0 8px; }

/* Suggestions rail (bottom, above input) */
.suggestions.bottom { position: sticky; bottom: 48px; z-index: 2; background: var(--panel); padding: 6px 0 4px; border-top: 1px dashed var(--border); margin: 0; opacity: 0.75; width: 100%; box-sizing: border-box; }
.suggestions.bottom:hover { opacity: 0.95; }
.suggestions { width: 100%; overflow: hidden; }
.sugg-rail { display: flex; flex-wrap: wrap; gap: 8px; width: 100%; overflow: hidden; animation: none; }
.sugg-chip { background: transparent; color: var(--muted); border: 1px dashed var(--border); border-radius: 999px; padding: 4px 10px; font-size: 12px; cursor: pointer; white-space: nowrap; flex: 1 1 0; min-width: 120px; max-width: 100%; }
.sugg-chip { overflow: hidden; text-overflow: ellipsis; }
.sugg-chip:hover { color: var(--text); border-style: solid; }
@keyframes sugg-scroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }
.msg.assistant p:last-child { margin-bottom: 0; }
.msg.assistant ul, .msg.assistant ol { margin: 6px 0 8px 18px; padding: 0; }
.msg.assistant li { margin: 2px 0; }
.msg.assistant code { background: rgba(255,255,255,0.06); padding: 1px 4px; border-radius: 4px; }
.msg.assistant pre { background: rgba(255,255,255,0.06); padding: 8px; border-radius: 6px; overflow: auto; }

/* Chat toolbar */
/* Chats modal */
.chats-toolbar { display: grid; grid-template-columns: 1fr auto auto auto; gap: 10px; align-items: center; margin-bottom: 10px; }
.chats-toolbar .field-input { height: 32px; padding: 0 8px; border-radius: 8px; border: 1px solid var(--border); background: var(--elev); color: var(--text); }
.chat-list { border: 1px solid var(--border); border-radius: 10px; overflow: hidden; max-height: 65vh; overflow: auto; background: var(--panel); }
.chat-item { display: grid; grid-template-columns: 1fr auto auto auto; gap: 12px; padding: 12px 14px; border-bottom: 1px solid var(--border); cursor: pointer; align-items: center; }
.chat-item:hover { background: var(--elev); }
.chat-item.active { outline: 1px solid var(--accent); background: rgba(44,117,255,0.12); }
.chat-item-title { font-weight: 600; color: var(--text); }
.chat-item-meta { color: var(--muted); font-size: 12px; }
.chat-item .delete-btn,
.chat-item .rename-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 6px;
  width: 28px;
  height: 28px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}
.chat-item .rename-btn:hover,
.chat-item .rename-btn:focus-visible {
  background: var(--btn-hover-bg);
  border-color: var(--btn-hover-border);
  color: var(--text);
  box-shadow: 0 0 0 1px var(--btn-hover-border);
}
.chat-item .delete-btn:hover,
.chat-item .delete-btn:focus-visible {
  background: rgba(220, 38, 38, 0.16);
  border-color: var(--danger);
  color: var(--danger);
  box-shadow: 0 4px 12px rgba(220, 38, 38, 0.25);
}
.chat-item .delete-btn:focus-visible,
.chat-item .rename-btn:focus-visible {
  outline: 2px solid var(--btn-hover-border);
  outline-offset: 2px;
}
.chat-item .delete-btn:focus-visible { outline-color: rgba(220, 38, 38, 0.6); }
.chat-item-snippet { color: var(--muted); font-size: 12px; margin-top: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.hl { background: var(--selected-bg); color: var(--text); border-radius: 4px; padding: 0 2px; }
.chat-input { display: grid; grid-template-columns: 1fr; gap: 8px; }
.textarea { background: var(--elev); color: var(--text); border: 1px solid var(--border); border-radius: 8px; padding: 8px; min-height: 44px; max-height: 120px; resize: none; overflow: auto; }
/* Inline send button inside the textarea */
.textarea-wrap { position: relative; }
.textarea-wrap .textarea { width: 100%; padding-right: 44px; }
.btn.send-inline { position: absolute; right: 6px; top: 50%; transform: translateY(-50%); width: 32px; height: 32px; padding: 0; border-radius: 8px; font-size: 14px; }

/* Resizer */
.resizer { width: var(--divider); background: transparent; cursor: col-resize; position: relative; }
.resizer:hover { background: var(--border); }
.collapse-btn { position: absolute; top: 8px; left: 50%; transform: translateX(-50%); width: 24px; height: 24px; border-radius: 6px; border: 1px solid var(--border); background: var(--elev); color: var(--muted); padding: 0; cursor: pointer; }
.edge-expand { display: none; }
.layout.collapsed .resizer:hover .edge-expand-plan { display: block; }
.layout.side-collapsed .resizer:hover .edge-expand-side { display: block; top: 40px; }

/* Collapsed layout */
.layout.collapsed { grid-template-columns: 0 var(--divider) 1fr; }
.layout.collapsed .grid-panel { overflow: hidden; }
.layout.collapsed #btnCollapsePlan.collapse-btn { transform: translateX(-50%) rotate(180deg); }

/* Side collapsed */
.layout.side-collapsed { grid-template-columns: 1fr var(--divider) 0; }
.layout.side-collapsed .side-panel { overflow: hidden; }

/* Modal */
.modal { position: fixed; inset: 0; display: none; align-items: center; justify-content: center; background: rgba(0,0,0,0.4); z-index: 1000; }
.modal.show { display: flex; }
.modal-dialog { width: 520px; max-width: 90vw; background: var(--panel); border: 1px solid var(--border); border-radius: 10px; box-shadow: 0 20px 60px rgba(0,0,0,0.5); display: grid; grid-template-rows: auto 1fr auto; max-height: 90vh; }
.modal-dialog.confirm-dialog { width: 360px; max-width: 92vw; display: block; padding: 0; }
.modal-header, .modal-footer { padding: 12px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.modal-footer { border-top: 1px solid var(--border); border-bottom: none; }
.modal-content { padding: 12px; display: grid; gap: 12px; overflow: auto; }
.modal-content.confirm-content { padding: 20px; gap: 16px; }
.confirm-body { display: grid; gap: 8px; }
.confirm-message { font-size: 15px; line-height: 1.5; color: var(--text); }
.confirm-detail { font-size: 13px; color: var(--muted); }
.confirm-actions { display: flex; justify-content: flex-end; gap: 8px; }
.input-modal .confirm-message:empty { display: none; }
.confirm-input {
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--elev);
  color: var(--text);
  padding: 0 10px;
  font-size: 14px;
  transition: border 0.2s ease, box-shadow 0.2s ease;
}
.confirm-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(44,117,255,0.25);
}
.settings-actions { display: flex; justify-content: flex-start; }
.field { display: grid; gap: 6px; }
.field input { height: 36px; padding: 0 10px; border-radius: 8px; border: 1px solid var(--border); background: var(--elev); color: var(--text); }
.field textarea { background: var(--elev); color: var(--text); border: 1px solid var(--border); border-radius: 8px; padding: 8px; }
.file-picker { display: flex; align-items: center; gap: 12px; }
.file-picker-btn { min-width: 0; }
.file-picker-name { font-size: 13px; }
.file-picker-name.muted { color: var(--muted); }
.login-overlay { position: fixed; inset: 0; display: flex; align-items: center; justify-content: center; background: radial-gradient(circle at top, rgba(44,117,255,0.25), rgba(9,11,20,0.92)); z-index: 4000; transition: opacity 0.35s ease, visibility 0.35s ease; backdrop-filter: blur(24px); }
:root.theme-light .login-overlay { background: #ffffff; backdrop-filter: none; }
.login-overlay.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.login-card { width: min(420px, 92vw); background: var(--panel); border: 1px solid var(--border); border-radius: 18px; padding: 32px 32px 36px; display: grid; gap: 16px; text-align: center; box-shadow: 0 24px 80px rgba(0,0,0,0.45); position: relative; overflow: hidden; }
.login-card::after { content: ''; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; background: linear-gradient(135deg, rgba(44,117,255,0.16), rgba(44,117,255,0.06)); mix-blend-mode: screen; opacity: 0.6; }
.login-card > * { position: relative; z-index: 1; }
:root.theme-light .login-overlay .login-card { background: #ffffff; border: 1px solid rgba(15, 23, 42, 0.08); box-shadow: 0 24px 80px rgba(15, 23, 42, 0.12); }
.login-card > * { position: relative; z-index: 1; }
.login-brand { display: flex; align-items: center; justify-content: center; gap: 8px; }
.login-brand .logo { width: 40px; height: 40px; }
.login-title { margin: 0; font-size: 20px; font-weight: 700; letter-spacing: 0.3px; color: var(--text); }
.login-subtitle { margin: -6px 0 12px; color: var(--muted); font-size: 13px; }
.login-form { display: grid; gap: 14px; text-align: left; }
.login-field { display: grid; gap: 6px; font-size: 13px; color: var(--muted); }
.login-field input { height: 38px; border-radius: 10px; border: 1px solid var(--border); background: var(--elev); color: var(--text); padding: 0 12px; font-size: 14px; transition: border 0.2s ease, box-shadow 0.2s ease; }
.login-field input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 2px rgba(44,117,255,0.25); }
.login-error { min-height: 18px; font-size: 12px; color: var(--danger); }
.login-submit { width: 100%; height: 38px; margin-top: 6px; font-size: 14px; letter-spacing: 0.2px; }
.login-success { display: none; gap: 12px; align-items: center; justify-content: center; flex-direction: column; margin-top: 6px; color: var(--text); }
.login-success.show { display: flex; animation: success-fade 0.6s ease forwards; }
.login-success p { margin: 0; font-size: 14px; color: var(--text); }
.checkmark { width: 72px; height: 72px; border-radius: 50%; background: rgba(69, 208, 129, 0.12); border: 2px solid rgba(69, 208, 129, 0.35); display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; box-shadow: 0 12px 32px rgba(53, 208, 127, 0.2); }
.checkmark::after { content: ''; position: absolute; inset: -10px; border-radius: 50%; background: radial-gradient(circle at center, rgba(69, 208, 129, 0.2), transparent 65%); opacity: 0; animation: checkmark-glow 0.5s ease 0.25s forwards; }
.checkmark-svg { width: 48px; height: 48px; }
.checkmark-circle { stroke: rgba(69, 208, 129, 0.6); stroke-width: 2.5; stroke-dasharray: 164; stroke-dashoffset: 164; animation: circle-draw 0.45s ease forwards; }
.checkmark-tick { stroke: #35d07f; stroke-width: 5; stroke-linecap: round; stroke-linejoin: round; stroke-dasharray: 40; stroke-dashoffset: 40; animation: tick-draw 0.35s ease 0.2s forwards; }
@keyframes circle-draw { from { stroke-dashoffset: 164; } to { stroke-dashoffset: 0; } }
@keyframes tick-draw { from { stroke-dashoffset: 40; } to { stroke-dashoffset: 0; } }
@keyframes checkmark-glow { from { opacity: 0; } to { opacity: 1; } }
@keyframes success-fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }

.export-png-container { position: fixed; left: -100000px; top: 0; padding: 16px; background: var(--panel); color: var(--text); border: 1px solid var(--border); border-radius: 12px; box-shadow: 0 18px 40px rgba(0,0,0,0.45); display: grid; gap: 12px; font-family: var(--font); }
.export-png-header { display: grid; gap: 4px; }
.export-png-header .export-title { font-size: 18px; font-weight: 600; letter-spacing: 0.4px; color: var(--text); }
.export-png-header .export-meta { font-size: 12px; color: var(--muted); }
.export-png-table { border-collapse: collapse; width: 100%; min-width: 100%; font-size: 13px; }
.export-png-table thead { background: var(--elev); }
.export-png-table th, .export-png-table td { border: 1px solid var(--border); padding: 8px 12px; color: var(--text); background: transparent; }
.export-png-table th { font-weight: 600; text-align: left; }
.export-png-table th.row-index { width: 48px; text-align: right; background: var(--hdr-index-bg); font-variant-numeric: tabular-nums; }
.export-png-table td.num, .export-png-table th.num { text-align: right; font-variant-numeric: tabular-nums; }
.export-png-table td.empty { color: var(--muted); font-style: italic; }
.export-png-table tr:nth-child(odd) td { background: rgba(255,255,255,0.02); }
:root.theme-light .export-png-table tr:nth-child(odd) td { background: rgba(0,0,0,0.03); }
.export-png-table thead th.cat-time { background: var(--hdr-time-bg); }
.export-png-table thead th.cat-product { background: var(--hdr-product-bg); }
.export-png-table thead th.cat-location { background: var(--hdr-location-bg); }
.export-png-table thead th.cat-measure { background: var(--hdr-measure-bg); }

/* Collapsible blocks */
.collapse { display: grid; gap: 6px; }
.collapse-toggle { text-align: left; background: var(--elev); color: var(--text); border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; cursor: pointer; font-size: 13px; display: flex; align-items: center; justify-content: space-between; }
.collapse-toggle::after { content: '▾'; color: var(--muted); transition: transform 0.15s ease; }
.collapse-toggle[aria-expanded="true"]::after { transform: rotate(180deg); }
.collapse-body { display: grid; gap: 8px; }
.collapse-body[hidden] { display: none !important; }

/* Visualisation */
.visual { display: grid; gap: 16px; }
.viz-title { margin: 8px 0 0; color: var(--text); font-size: 16px; }
.viz-section { display: grid; gap: 8px; }
.viz-toggle { text-align: left; background: var(--elev); color: var(--text); border: 1px solid var(--border); border-radius: 6px; padding: 6px 8px; cursor: pointer; font-size: 13px; }
.viz-content { display: grid; gap: 12px; }
.viz-table { width: 100%; border-collapse: separate; border-spacing: 0; background: var(--panel); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.viz-table th, .viz-table td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); font-size: 13px; }
.viz-table thead th { background: var(--elev); color: var(--muted); }
.viz-table tr:last-child td { border-bottom: none; }
.charts { display: grid; grid-template-columns: repeat(auto-fill, minmax(420px, 1fr)); gap: 12px; }
.chart-card { border: 1px solid var(--border); border-radius: 8px; background: var(--elev); padding: 8px; }
.chart-title { color: var(--muted); font-size: 12px; margin: 0 4px 6px; }

/* Utilities */
.hidden { display: none !important; }

/* Toast */
.toast { position: fixed; bottom: 16px; left: 50%; transform: translateX(-50%) translateY(8px); background: var(--elev); color: var(--text); border: 1px solid var(--border); padding: 8px 12px; border-radius: 8px; box-shadow: 0 8px 30px rgba(0,0,0,0.4); opacity: 0; pointer-events: none; transition: opacity 0.2s ease, transform 0.2s ease; z-index: 3000; }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* Inline notices */
.inline-notice { position: absolute; transform: translate(-50%, -6px); background: var(--elev); color: var(--text); border: 1px solid var(--border); padding: 6px 10px; border-radius: 6px; box-shadow: 0 8px 24px rgba(0,0,0,0.4); font-size: 12px; white-space: nowrap; opacity: 0; pointer-events: none; transition: opacity 0.18s ease, transform 0.18s ease; z-index: 2500; }
.inline-notice.show { opacity: 1; transform: translate(-50%, 0); }

/* Knowledge base */
.kb-drop { display: grid; justify-items: center; gap: 8px; border: 2px dashed var(--border); border-radius: 10px; padding: 16px; color: var(--muted); }
.kb-drop.dragover { background: rgba(44,117,255,0.12); border-color: var(--accent); color: var(--text); }
.kb-list { display: grid; gap: 8px; margin-top: 8px; }
.kb-item { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 8px; padding: 8px; border: 1px solid var(--border); border-radius: 8px; }
.kb-name { color: var(--text); }
.kb-meta { color: var(--muted); font-size: 12px; }
.kb-item .icon-btn { width: 26px; height: 26px; border: 1px solid var(--border); border-radius: 6px; background: transparent; color: var(--muted); }
.kb-item .icon-btn:hover { color: var(--danger); border-color: var(--danger); }
.kb-actions { display: flex; gap: 8px; justify-content: flex-end; }

/* Grid context menu */
.ctx-menu { position: absolute; background: var(--panel); color: var(--text); border: 1px solid var(--border); border-radius: 8px; box-shadow: 0 10px 30px rgba(0,0,0,0.5); z-index: 50; display: none; min-width: 160px; }
.ctx-menu.show { display: block; }
.ctx-item { padding: 8px 10px; cursor: pointer; border-bottom: 1px solid var(--border); }
.ctx-item:last-child { border-bottom: none; }
.ctx-item:hover { background: var(--elev); }

/* Cell popover */
.cell-popover { position: fixed; z-index: 2000; width: 340px; max-width: 90vw; background: var(--panel); border: 1px solid var(--border); border-radius: 10px; box-shadow: 0 12px 40px rgba(0,0,0,0.5); display: grid; grid-template-rows: auto 1fr; }
.cell-popover .popover-header { display: flex; align-items: center; justify-content: space-between; padding: 8px 10px; border-bottom: 1px solid var(--border); }
.cell-popover .popover-header .title { font-weight: 600; color: var(--text); }
.cell-popover .popover-content { padding: 8px; display: grid; gap: 8px; max-height: 50vh; }
.cell-popover .popover-content .prose { overflow: auto; max-height: 36vh; }
.cell-popover .chat-mini { display: grid; grid-template-columns: 1fr auto; gap: 8px; }
.cell-popover .chat-mini .textarea { min-height: 38px; resize: vertical; }

/* Responsive */
@media (max-width: 1000px) {
  .layout { grid-template-columns: 1fr; }
  .side-panel { order: -1; height: 38vh; border-top: 1px solid var(--border); }
  .resizer { display: none; }
}
.modal#visualModal .modal-dialog { width: 960px; max-width: 95vw; }
.modal#assessmentModal .modal-dialog { width: 960px; max-width: 95vw; }
.modal-header .header-actions { display: flex; align-items: center; gap: 8px; }
/* Assessment layout: text scrolls, chat sticks to bottom */
#assessmentBody { display: grid; grid-template-rows: 1fr auto; min-height: 0; }
#assessmentText { overflow: auto; }
#assessmentModal .chat { height: auto; }
.modal#chatsModal .modal-dialog { width: 880px; max-width: 96vw; }