[hidden] { display: none !important; }
:root {
  --bg: #f4f6fb;
  --card: #ffffff;
  --card2: #f8f9fd;
  --text: #1c2233;
  --muted: #6b7489;
  --line: #e3e7f0;
  --c1: #4f6bed;
  --c2: #22b8a6;
  --accent: #4f6bed;
  --accent-soft: #e9edff;
  --good: #16a34a;
  --bad: #dc2626;
  --shadow: 0 1px 2px rgba(20, 30, 60, .05), 0 4px 16px rgba(20, 30, 60, .06);
  --radius: 14px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f1320; --card: #181d2d; --card2: #1e2436; --text: #e7eaf3; --muted: #97a0b8;
    --line: #2a3147; --accent: #7b8ff7; --accent-soft: #252d4d; --good: #4ade80; --bad: #f87171;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 6px 20px rgba(0,0,0,.25); color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0f1320; --card: #181d2d; --card2: #1e2436; --text: #e7eaf3; --muted: #97a0b8;
  --line: #2a3147; --accent: #7b8ff7; --accent-soft: #252d4d; --good: #4ade80; --bad: #f87171;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 6px 20px rgba(0,0,0,.25); color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--bg); color: var(--text);
  font: 14px/1.45 Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  display: flex; flex-direction: column; overflow: hidden;
}
button, input, select, textarea { font: inherit; color: inherit; }

/* ---------- Top bar ---------- */
.top {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 16px; background: var(--card); border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 16px; min-width: 0; }
.file-name { font-weight: 500; font-size: 13px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 240px; }
.actions { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.btn {
  border: 1px solid var(--line); background: var(--card); padding: 7px 12px; border-radius: 9px;
  cursor: pointer; white-space: nowrap; transition: background .15s, border-color .15s;
}
.btn:hover { background: var(--card2); border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.icon { padding: 7px 10px; }
.btn.ghost { border-color: transparent; background: transparent; }
.btn:disabled { opacity: .45; cursor: not-allowed; }
body.no-data .need-data { opacity: .45; pointer-events: none; }

.menu { position: relative; }
.menu-list {
  position: absolute; right: 0; top: calc(100% + 6px); z-index: 30; min-width: 250px;
  background: var(--card); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow);
  padding: 6px; display: flex; flex-direction: column;
}
.menu-list button { text-align: left; padding: 8px 10px; border: 0; background: none; border-radius: 8px; cursor: pointer; }
.menu-list button:hover { background: var(--card2); }
.menu-list hr { border: 0; border-top: 1px solid var(--line); margin: 6px 0; width: 100%; }
.menu-row { display: flex; justify-content: space-between; align-items: center; padding: 4px 10px; gap: 10px; }
.menu-row select { padding: 4px 6px; border-radius: 6px; border: 1px solid var(--line); background: var(--card); }

/* ---------- Filter bar ---------- */
.filter-bar {
  display: flex; gap: 8px; flex-wrap: wrap; align-items: center; padding: 8px 16px;
  background: var(--card); border-bottom: 1px solid var(--line); font-size: 13px;
}
.fchip {
  display: inline-flex; align-items: center; gap: 6px; background: var(--accent-soft); color: var(--text);
  border-radius: 999px; padding: 4px 6px 4px 12px; max-width: 100%;
}
.fchip span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 320px; }
.fchip button { border: 0; background: none; cursor: pointer; padding: 0 6px; font-size: 15px; color: var(--muted); }
.link { border: 0; background: none; color: var(--accent); cursor: pointer; padding: 4px; }

/* ---------- Layout ---------- */
.layout { flex: 1; display: flex; min-height: 0; }
.board {
  flex: 1; overflow: auto; padding: 16px; display: grid; grid-template-columns: repeat(12, 1fr);
  gap: 14px; align-content: start;
}
.assistant {
  width: 380px; flex-shrink: 0; display: flex; flex-direction: column; background: var(--card);
  border-left: 1px solid var(--line); min-height: 0;
}
body.chat-hidden .assistant { display: none; }

/* ---------- Widgets ---------- */
.widget {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
  display: flex; flex-direction: column; min-width: 0; grid-column: span 6; position: relative;
}
.size-s { grid-column: span 3; } .size-m { grid-column: span 4; } .size-l { grid-column: span 6; } .size-xl { grid-column: span 12; }
.widget.drag-over { outline: 2px dashed var(--accent); outline-offset: 2px; }
.widget.dragging { opacity: .4; }
.widget.flash { animation: flash 1.4s ease; }
@keyframes flash { 0%,100% { box-shadow: var(--shadow); } 30% { box-shadow: 0 0 0 3px var(--accent); } }
.w-head { display: flex; align-items: center; gap: 6px; padding: 10px 10px 0 14px; cursor: grab; min-height: 36px; }
.w-title { font-weight: 600; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.w-tools { display: flex; gap: 2px; opacity: 0; transition: opacity .15s; position: absolute; right: 8px; top: 6px; background: var(--card); border-radius: 8px; padding: 2px; box-shadow: var(--shadow); z-index: 2; }
.widget:hover .w-tools, .widget:focus-within .w-tools { opacity: 1; }
@media (hover: none) { .w-tools { opacity: 1; position: static; box-shadow: none; } }
.w-tools button { border: 0; background: none; cursor: pointer; padding: 4px 6px; border-radius: 6px; color: var(--muted); font-size: 14px; }
.w-tools button:hover { background: var(--card2); color: var(--text); }
.w-body { flex: 1; min-height: 0; padding: 4px 10px 10px; }
.chart { width: 100%; height: 310px; }
.size-xl .chart { height: 340px; }
.w-empty { color: var(--muted); padding: 30px 10px; text-align: center; }

/* KPI */
.kpi { padding: 4px 6px 6px; }
.kpi-val { font-size: 30px; font-weight: 700; letter-spacing: -.02em; line-height: 1.15; }
.kpi-sub { color: var(--muted); font-size: 12.5px; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-top: 2px; }
.delta.up { color: var(--good); font-weight: 600; } .delta.down { color: var(--bad); font-weight: 600; }
.spark { width: 100%; height: 38px; margin-top: 6px; display: block; }

/* Table */
.tbl-tools { display: flex; gap: 8px; align-items: center; margin-bottom: 8px; flex-wrap: wrap; }
.tbl-tools input { flex: 1; min-width: 140px; padding: 6px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--card2); }
.tbl-tools details { position: relative; }
.tbl-tools summary { list-style: none; cursor: pointer; }
.tbl-tools summary::-webkit-details-marker { display: none; }
.col-pick { position: absolute; right: 0; top: 110%; z-index: 20; background: var(--card); border: 1px solid var(--line); border-radius: 10px; box-shadow: var(--shadow); padding: 8px; max-height: 260px; overflow: auto; min-width: 200px; }
.col-pick label { display: flex; gap: 8px; padding: 3px 4px; cursor: pointer; white-space: nowrap; }
.tbl-wrap { overflow: auto; max-height: 420px; border: 1px solid var(--line); border-radius: 10px; }
table { border-collapse: collapse; width: 100%; font-size: 13px; }
th, td { padding: 7px 10px; border-bottom: 1px solid var(--line); text-align: left; white-space: nowrap; }
th { position: sticky; top: 0; background: var(--card2); cursor: pointer; user-select: none; font-weight: 600; z-index: 1; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tbody tr:hover { background: var(--card2); }
.pager { display: flex; justify-content: space-between; align-items: center; margin-top: 8px; color: var(--muted); font-size: 12.5px; gap: 8px; flex-wrap: wrap; }
.pager button { padding: 4px 10px; }

/* Empty / overview */
.hero { grid-column: 1 / -1; text-align: center; padding: 60px 20px; }
.hero h1 { font-size: 28px; margin: 0 0 8px; letter-spacing: -.02em; }
.hero p { color: var(--muted); margin: 0 auto 22px; max-width: 520px; }
.hero .btn { padding: 10px 18px; font-size: 15px; margin: 4px; }
.drop-hint { margin: 26px auto 0; max-width: 520px; border: 2px dashed var(--line); border-radius: 16px; padding: 28px; color: var(--muted); cursor: pointer; }
.drop-hint:hover { border-color: var(--accent); }
.overview { grid-column: 1 / -1; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); }
.overview h2 { margin: 0 0 4px; font-size: 18px; }
.overview p { margin: 0 0 12px; color: var(--muted); }
.col-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.col-chip { border: 1px solid var(--line); border-radius: 8px; padding: 4px 8px; font-size: 12.5px; background: var(--card2); }
.col-chip i { font-style: normal; color: var(--muted); margin-left: 4px; }

/* ---------- Assistant ---------- */
.as-head { display: flex; justify-content: space-between; align-items: center; padding: 12px 14px; border-bottom: 1px solid var(--line); }
.ai-status { margin-left: 8px; font-size: 11.5px; color: var(--muted); padding: 2px 8px; border-radius: 999px; background: var(--card2); }
.ai-status.on { color: var(--good); }
.chat-log { flex: 1; overflow-y: auto; padding: 14px; display: flex; flex-direction: column; gap: 10px; }
.msg { max-width: 92%; padding: 9px 12px; border-radius: 14px; white-space: normal; word-wrap: break-word; }
.msg.assistant { background: var(--card2); border: 1px solid var(--line); align-self: flex-start; border-bottom-left-radius: 4px; }
.msg.user { background: var(--accent); color: #fff; align-self: flex-end; border-bottom-right-radius: 4px; }
.msg ul { margin: 4px 0; padding-left: 18px; }
.msg p { margin: 0 0 6px; } .msg p:last-child { margin: 0; }
.q-opts { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.chip {
  border: 1px solid var(--accent); color: var(--accent); background: var(--card); border-radius: 999px;
  padding: 5px 11px; cursor: pointer; font-size: 13px;
}
.chip:hover, .chip.sel { background: var(--accent); color: #fff; }
.chip.subtle { border-color: var(--line); color: var(--muted); }
.chip.subtle:hover { background: var(--card2); color: var(--text); }
.chip:disabled { opacity: .5; cursor: default; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.suggest { display: flex; gap: 6px; flex-wrap: wrap; padding: 0 14px 8px; }
.chat-form { display: flex; gap: 8px; padding: 10px 14px 14px; border-top: 1px solid var(--line); }
.chat-form textarea {
  flex: 1; resize: none; border: 1px solid var(--line); border-radius: 10px; padding: 9px 11px;
  background: var(--card2); max-height: 120px; outline: none;
}
.chat-form textarea:focus { border-color: var(--accent); }
.typing span { display: inline-block; width: 6px; height: 6px; margin: 0 2px; border-radius: 50%; background: var(--muted); animation: blink 1.2s infinite; }
.typing span:nth-child(2) { animation-delay: .2s; } .typing span:nth-child(3) { animation-delay: .4s; }
@keyframes blink { 0%, 80%, 100% { opacity: .2; } 40% { opacity: 1; } }

/* ---------- Dialogs ---------- */
dialog { border: 1px solid var(--line); border-radius: 16px; padding: 0; background: var(--card); color: var(--text); box-shadow: 0 20px 60px rgba(0,0,0,.25); width: min(560px, calc(100vw - 32px)); }
dialog::backdrop { background: rgba(10, 15, 30, .45); }
.dlg { padding: 18px 20px; display: flex; flex-direction: column; gap: 12px; }
.dlg h3 { margin: 0; }
.dlg label { display: flex; flex-direction: column; gap: 4px; font-size: 12.5px; color: var(--muted); }
.dlg input, .dlg select { padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--card2); color: var(--text); font-size: 14px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.span2 { grid-column: span 2; }
.dlg-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 4px; }
.hint { margin: 0; color: var(--muted); font-size: 12.5px; }
.err { margin: 0; color: var(--bad); font-size: 13px; min-height: 1em; }
.check-list { max-height: 260px; overflow: auto; border: 1px solid var(--line); border-radius: 8px; padding: 6px; display: flex; flex-direction: column; }
.check-list label { flex-direction: row; align-items: center; gap: 8px; color: var(--text); font-size: 13.5px; padding: 3px 4px; }
.row2 { display: flex; gap: 10px; } .row2 label { flex: 1; }

/* ---------- Misc ---------- */
.toast {
  position: fixed; left: 50%; bottom: 22px; transform: translateX(-50%) translateY(20px); opacity: 0;
  background: var(--text); color: var(--bg); padding: 9px 16px; border-radius: 10px; transition: .25s; pointer-events: none; z-index: 100;
  max-width: calc(100vw - 32px);
}
.toast.show { opacity: 1; transform: translateX(-50%); }
.drop-zone { position: fixed; inset: 0; background: rgba(79, 107, 237, .18); z-index: 90; display: grid; place-items: center; pointer-events: none; }
.drop-zone div { background: var(--card); padding: 22px 32px; border-radius: 16px; border: 2px dashed var(--accent); font-weight: 600; font-size: 18px; }

/* ---------- Responsive ---------- */
@media (max-width: 1280px) {
  .size-s { grid-column: span 4; } .size-m { grid-column: span 6; } .size-l { grid-column: span 6; }
}
@media (max-width: 1000px) {
  .assistant { position: fixed; inset: 0; width: auto; z-index: 50; border-left: 0; }
  .size-s { grid-column: span 6; } .size-m, .size-l { grid-column: span 12; }
}
@media (min-width: 1001px) { #btnCloseChat { display: none; } }
@media (max-width: 640px) {
  .top { padding: 8px 16px; }
  .brand > span:not(.file-name) { display: none; }
  .file-name { max-width: 140px; }
  .board { padding: 12px 16px; gap: 12px; }
  .size-s, .size-m, .size-l, .size-xl { grid-column: span 12; }
  .grid2 { grid-template-columns: 1fr; } .span2 { grid-column: auto; }
  .btn { padding: 6px 9px; font-size: 13px; }
  .hero h1 { font-size: 23px; }
  .chart { height: 280px; }
}

/* ---------- Print ---------- */
@media print {
  body { overflow: visible; display: block; background: #fff; }
  .top .actions, .assistant, .w-tools, .tbl-tools, .pager, .filter-bar .link, .fchip button { display: none !important; }
  .layout { display: block; }
  .board { overflow: visible; display: grid; }
  .widget { break-inside: avoid; box-shadow: none; }
  .tbl-wrap { max-height: none; overflow: visible; }
}