/* AI-Driven Dynamic Dashboard — self-contained BI styling. */

:root {
  --primary: #5b5bd6;
  --primary-2: #7c7cf0;
  --bg: #f3f4f8;
  --surface: #ffffff;
  --surface-2: #f1f2f7;
  --text: #1f2030;
  --text-2: #6b7280;
  --border: #e5e7ef;
  --danger: #e5484d;
  --danger-soft: #fdecec;
  --ok: #22c55e;
  --warn: #f59e0b;
  --shadow: 0 1px 3px rgba(20, 20, 50, 0.06), 0 6px 18px rgba(20, 20, 50, 0.05);
  --shadow-lg: 0 10px 40px rgba(20, 20, 50, 0.12);
  --radius: 14px;
}
[data-theme="dark"] {
  --bg: #0e0f1a;
  --surface: #181a29;
  --surface-2: #1f2236;
  --text: #e8e9f2;
  --text-2: #9ca0b8;
  --border: #2a2d44;
  --danger-soft: #3a1d22;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.4), 0 6px 18px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.5);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg); color: var(--text);
  -webkit-font-smoothing: antialiased; font-size: 14px;
}
.hidden { display: none !important; }
button { font-family: inherit; cursor: pointer; }
a { color: var(--primary); }

/* ── buttons ── */
.btn {
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  padding: 8px 14px; border-radius: 9px; font-size: 13px; font-weight: 600;
  display: inline-flex; align-items: center; gap: 6px; transition: all .15s;
}
.btn:hover { border-color: var(--primary); color: var(--primary); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-2); border-color: var(--primary-2); color: #fff; }
.btn-ghost { background: transparent; }
.btn-sm { padding: 5px 10px; font-size: 12px; border-radius: 8px; }
.btn-danger:hover { border-color: var(--danger); color: var(--danger); background: var(--danger-soft); }

/* ── topbar ── */
.topbar {
  display: flex; align-items: center; gap: 14px; padding: 12px 22px;
  background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 50;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 15px; }
.brand .logo {
  width: 34px; height: 34px; border-radius: 9px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-2)); color: #fff; font-size: 18px;
}
.topbar .spacer { flex: 1; }
.file-chip {
  font-size: 12px; color: var(--text-2); background: var(--surface-2);
  padding: 5px 12px; border-radius: 999px; border: 1px solid var(--border);
}

/* ── auth gate ── */
.gate { max-width: 460px; margin: 16vh auto; text-align: center; padding: 24px; }
.gate .logo-lg { font-size: 46px; }
.gate h1 { font-size: 22px; margin: 12px 0 8px; }
.gate p { color: var(--text-2); line-height: 1.6; }

/* ── upload hero ── */
.hero { max-width: 820px; margin: 7vh auto 5vh; padding: 0 20px; text-align: center; }
.hero h1 {
  font-size: clamp(28px, 5vw, 44px); margin: 0 0 12px; line-height: 1.1; letter-spacing: -.5px;
  background: linear-gradient(120deg, var(--primary), #9333ea); -webkit-background-clip: text;
  background-clip: text; color: transparent;
}
.hero .sub { font-size: 16px; color: var(--text-2); margin: 0 auto 32px; max-width: 620px; line-height: 1.6; }
.dropzone {
  border: 2px dashed var(--border); border-radius: 18px; padding: 48px 24px; background: var(--surface);
  transition: all .2s; cursor: pointer; box-shadow: var(--shadow);
}
.dropzone:hover, .dropzone.drag { border-color: var(--primary); background: var(--surface-2); transform: translateY(-2px); }
.dropzone .icon { font-size: 46px; }
.dropzone h3 { margin: 12px 0 6px; font-size: 18px; }
.dropzone p { color: var(--text-2); margin: 0; font-size: 13px; }
.hero .limits { margin-top: 18px; font-size: 12px; color: var(--text-2); }
.feature-strip { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 34px; }
.feature-strip span {
  font-size: 12px; color: var(--text-2); background: var(--surface); border: 1px solid var(--border);
  padding: 7px 13px; border-radius: 999px;
}

/* ── layout ── */
.wrap { max-width: 1480px; margin: 0 auto; padding: 18px 22px 60px; }
.tabs { display: flex; gap: 6px; margin: 4px 0 16px; border-bottom: 1px solid var(--border); }
.tab {
  padding: 10px 16px; font-size: 13.5px; font-weight: 600; color: var(--text-2);
  border: none; background: none; border-bottom: 2px solid transparent;
}
.tab.active { color: var(--primary); border-bottom-color: var(--primary); }
.toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 14px; }
.toolbar .spacer { flex: 1; }
.section-title { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .6px; color: var(--text-2); margin: 22px 2px 10px; }

/* ── filters ── */
.filters { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 6px; }
.filter {
  background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 8px 11px;
  display: flex; flex-direction: column; gap: 4px; min-width: 150px;
}
.filter label { font-size: 10.5px; font-weight: 700; text-transform: uppercase; letter-spacing: .4px; color: var(--text-2); }
.filter select, .filter input { font-family: inherit; font-size: 13px; border: 1px solid var(--border); border-radius: 7px; padding: 5px 7px; background: var(--bg); color: var(--text); }
.filter .range { display: flex; gap: 6px; align-items: center; }
.filter .range input { width: 84px; }
.filter-multi { max-height: 92px; overflow: auto; display: flex; flex-direction: column; gap: 3px; }
.filter-multi label { display: flex; gap: 6px; align-items: center; text-transform: none; font-weight: 500; font-size: 12px; color: var(--text); letter-spacing: 0; }

/* ── AI panel ── */
.ai-panel {
  background: linear-gradient(135deg, rgba(91,91,214,.08), rgba(147,51,234,.06));
  border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; margin-bottom: 16px;
}
.ai-panel h3 { margin: 0 0 8px; font-size: 15px; display: flex; align-items: center; gap: 8px; }
.ai-summary { font-size: 14px; line-height: 1.6; color: var(--text); }
.insights { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 12px; margin-top: 14px; }
.insight { background: var(--surface); border: 1px solid var(--border); border-radius: 11px; padding: 12px 14px; }
.insight h4 { margin: 0 0 7px; font-size: 12px; text-transform: uppercase; letter-spacing: .5px; color: var(--text-2); }
.insight ul { margin: 0; padding-left: 16px; font-size: 12.5px; line-height: 1.6; }
.insight.anomaly { border-left: 3px solid var(--warn); }
.shimmer { color: var(--text-2); font-style: italic; }

/* ── grid / widgets ── */
.grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
.widget {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 16px; grid-column: span 2; display: flex; flex-direction: column; min-height: 120px;
}
.widget.size-md { grid-column: span 3; }
.widget.size-lg { grid-column: span 6; }
.widget.tall { min-height: 340px; }
.widget-head { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.widget-head h4 { margin: 0; font-size: 13.5px; flex: 1; }
.widget-tools { display: none; gap: 4px; }
.editing .widget-tools { display: flex; }
.editing .widget { border-style: dashed; cursor: grab; }
.widget-tools button { border: none; background: var(--surface-2); border-radius: 6px; width: 24px; height: 24px; font-size: 12px; color: var(--text-2); }
.widget-tools button:hover { color: var(--primary); }
.drag-over { outline: 2px dashed var(--primary); outline-offset: 3px; }
.chart-box { position: relative; flex: 1; min-height: 220px; }
.chart-box .ec { width: 100%; height: 100%; min-height: 240px; }

/* KPI — colored accents (per-card --kc / --kc-soft set in JS) */
.kpi {
  position: relative;
  border-left: 4px solid var(--kc, var(--primary));
  background: linear-gradient(180deg, var(--kc-soft, transparent), transparent 60%), var(--surface);
}
.kpi .value { font-size: 28px; font-weight: 800; letter-spacing: -.5px; color: var(--kc, var(--text)); }
.kpi .label { font-size: 12px; color: var(--text-2); font-weight: 600; }
.kpi .spark {
  position: absolute; top: 14px; right: 14px;
  width: 34px; height: 34px; border-radius: 50%;
  display: grid; place-items: center; font-size: 16px; font-weight: 700;
  color: var(--kc, var(--primary)); background: var(--kc-soft, var(--surface-2));
}

/* breadcrumb (drill) */
.drill { font-size: 11.5px; color: var(--text-2); margin-bottom: 4px; }
.drill a { cursor: pointer; }

/* ── data table ── */
.table-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.table-toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; padding: 12px 14px; border-bottom: 1px solid var(--border); }
.table-toolbar input.search { flex: 1; min-width: 180px; padding: 7px 11px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg); color: var(--text); font-size: 13px; }
.table-scroll { overflow: auto; max-height: 62vh; }
table.data { border-collapse: collapse; width: 100%; font-size: 13px; }
table.data th, table.data td { padding: 8px 12px; border-bottom: 1px solid var(--border); text-align: left; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 320px; }
table.data thead th { position: sticky; top: 0; background: var(--surface-2); z-index: 2; cursor: pointer; user-select: none; font-weight: 700; }
table.data thead th .resizer { position: absolute; right: 0; top: 0; width: 6px; height: 100%; cursor: col-resize; }
table.data th { position: relative; }
table.data tbody tr:hover { background: var(--surface-2); }
table.data.freeze th:first-child, table.data.freeze td:first-child { position: sticky; left: 0; background: var(--surface); z-index: 1; }
table.data.freeze thead th:first-child { z-index: 3; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.pager { display: flex; gap: 8px; align-items: center; justify-content: flex-end; padding: 10px 14px; border-top: 1px solid var(--border); font-size: 12.5px; color: var(--text-2); }

/* column visibility / menus */
.menu { position: relative; }
.menu-pop { position: absolute; right: 0; top: 110%; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; box-shadow: var(--shadow-lg); padding: 8px; z-index: 60; min-width: 190px; max-height: 320px; overflow: auto; }
.menu-pop label { display: flex; gap: 7px; align-items: center; font-size: 12.5px; padding: 4px 6px; border-radius: 6px; }
.menu-pop label:hover { background: var(--surface-2); }
.menu-pop button { width: 100%; text-align: left; }

/* ── AI chat ── */
.chat-wrap { max-width: 880px; }
.chat-log { display: flex; flex-direction: column; gap: 12px; margin-bottom: 14px; }
.bubble { padding: 11px 14px; border-radius: 12px; max-width: 85%; font-size: 13.5px; line-height: 1.55; }
.bubble.user { align-self: flex-end; background: var(--primary); color: #fff; }
.bubble.ai { align-self: flex-start; background: var(--surface); border: 1px solid var(--border); }
.bubble .mini-chart { height: 240px; margin-top: 10px; }
.chat-form { display: flex; gap: 8px; }
.chat-form input { flex: 1; padding: 11px 14px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); color: var(--text); font-size: 14px; }
.chat-hint { font-size: 12px; color: var(--text-2); margin: 4px 2px 12px; }

/* ── modal ── */
.modal-bg { position: fixed; inset: 0; background: rgba(10,10,30,.45); display: grid; place-items: center; z-index: 100; }
.modal { background: var(--surface); border-radius: 16px; padding: 22px; width: min(440px, 92vw); box-shadow: var(--shadow-lg); }
.modal h3 { margin: 0 0 14px; }
.modal label { display: block; font-size: 12px; font-weight: 600; color: var(--text-2); margin: 10px 0 4px; }
.modal select, .modal input { width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg); color: var(--text); font-size: 13.5px; }
.modal .row { display: flex; gap: 10px; }
.modal .row > div { flex: 1; }
.modal .actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 18px; }

/* ── toast ── */
.toast { position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%); background: var(--text); color: var(--bg); padding: 11px 18px; border-radius: 10px; font-size: 13px; box-shadow: var(--shadow-lg); z-index: 200; display: flex; gap: 8px; }
.toast.error { background: var(--danger); color: #fff; }

.spinner { width: 16px; height: 16px; border: 2px solid rgba(127,127,127,.3); border-top-color: var(--primary); border-radius: 50%; animation: spin .7s linear infinite; display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 880px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .widget, .widget.size-md, .widget.size-lg { grid-column: span 2; }
}

/* ── print → PDF ── */
@media print {
  .topbar, .toolbar, .tabs, .filters, .table-toolbar, .pager, .widget-tools, .chat-form, .chat-hint, #tab-chat { display: none !important; }
  body { background: #fff; }
  .widget { break-inside: avoid; box-shadow: none; }
}