:root {
  --bg-grad:
    radial-gradient(1100px 700px at 8% -10%, rgba(124,58,237,.55), transparent 60%),
    radial-gradient(900px 600px at 105% 10%, rgba(236,72,153,.4), transparent 55%),
    radial-gradient(800px 800px at 50% 115%, rgba(34,211,238,.22), transparent 60%),
    linear-gradient(160deg, #0b0620, #1a0b3d 45%, #05081f);
  --text: #f1eefc;
  --muted: #a9a3c9;
  --border: rgba(255,255,255,.14);
  --glass: rgba(255,255,255,.055);
  --glass-strong: rgba(255,255,255,.09);
  --violet: #8B5CF6;
  --pink: #EC4899;
  --cyan: #22D3EE;
  --brand: linear-gradient(135deg, var(--violet), var(--pink));
  --brand-dark: var(--text);
  --accent: var(--cyan);
  --mkt: var(--violet);
  --mkt-soft: rgba(139,92,246,.16);
  --direct: var(--pink);
  --direct-soft: rgba(236,72,153,.16);
  --shadow: 0 8px 32px rgba(0,0,0,.35);
  --radius: 14px;
  color-scheme: dark;
}
:root[data-theme="light"] {
  --bg-grad:
    radial-gradient(1100px 700px at 8% -10%, rgba(139,92,246,.28), transparent 60%),
    radial-gradient(900px 600px at 105% 10%, rgba(236,72,153,.22), transparent 55%),
    radial-gradient(800px 800px at 50% 115%, rgba(34,211,238,.25), transparent 60%),
    linear-gradient(160deg, #eef2ff, #fdf2f8 45%, #ecfeff);
  --text: #241b40;
  --muted: #6b6285;
  --border: rgba(76,29,149,.16);
  --glass: rgba(255,255,255,.65);
  --glass-strong: rgba(255,255,255,.9);
  --shadow: 0 8px 28px rgba(76,29,149,.1);
  color-scheme: light;
}
* { box-sizing: border-box; }
html, body {
  background: var(--bg-grad) fixed;
  color: var(--text);
}
body {
  font-family: "Inter", "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  margin: 0;
  min-height: 100vh;
}
a { color: var(--cyan); }
h1, h2, h3, h4, h5, h6 { color: var(--text); }
.text-muted { color: var(--muted) !important; }
hr { border-color: var(--border); }

/* ---------- Shell / Sidebar ---------- */
.app-shell { display: flex; min-height: 100vh; }
.sidebar {
  width: 240px;
  flex-shrink: 0;
  background: rgba(8, 4, 24, .35);
  border-right: 1px solid var(--border);
  color: var(--text);
  display: flex;
  flex-direction: column;
  padding: 20px 14px;
  position: sticky;
  top: 0;
  height: 100vh;
  backdrop-filter: blur(10px);
}
.sidebar-brand { display: flex; align-items: center; gap: 10px; padding: 0 6px 18px; }
.brand-mark {
  width: 36px; height: 36px; border-radius: 10px; background: var(--brand);
  color: #fff; font-weight: 800; font-size: 14px; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 20px rgba(139,92,246,.4);
}
.brand-name { font-weight: 700; font-size: 14.5px; line-height: 1.2; color: var(--text); }
.brand-sub { font-size: 11px; color: var(--muted); }
.sidebar-nav { display: flex; flex-direction: column; gap: 2px; flex: 1; overflow-y: auto; }
.side-link {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: 10px; color: var(--muted);
  text-decoration: none; font-size: 13.5px; font-weight: 500; transition: .15s;
  border: 1px solid transparent;
}
.side-link .ic { font-size: 14px; width: 18px; text-align: center; }
.side-link:hover { background: var(--glass); color: var(--text); }
.side-link.active {
  background: linear-gradient(135deg, rgba(139,92,246,.35), rgba(236,72,153,.25));
  border-color: rgba(139,92,246,.4);
  color: #fff; font-weight: 700;
  box-shadow: 0 0 20px rgba(139,92,246,.25);
}
.side-sep {
  margin: 14px 6px 4px; font-size: 10.5px; text-transform: uppercase; letter-spacing: .06em;
  color: rgba(255,255,255,.35); font-weight: 700;
}
.sidebar-footer { margin-top: auto; }
.theme-toggle {
  display: flex; align-items: center; gap: 8px; width: 100%;
  background: var(--glass); border: 1px solid var(--border); color: var(--text);
  border-radius: 10px; padding: 8px 12px; font-size: 12.5px; font-weight: 600;
}
.theme-toggle:hover { background: var(--glass-strong); }
.sidebar-user { border-top: 1px solid var(--border); padding-top: 12px; margin-top: 10px; }
.side-user-link { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); }
.avatar {
  width: 34px; height: 34px; border-radius: 50%; background: var(--brand);
  color: #fff; font-weight: 700; display: flex; align-items: center; justify-content: center; font-size: 14px;
}
.sidebar-user .text-muted { color: var(--muted) !important; }

.main-col { flex: 1; min-width: 0; }
.page-wrap { max-width: 1180px; margin: 0 auto; padding: 26px 24px 60px; }

.mobile-toggle {
  display: none;
  position: fixed; top: 12px; left: 12px; z-index: 40;
  width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--border);
  background: rgba(20,10,45,.85); color: #fff; font-size: 18px;
}
.sidebar-overlay { display: none; }

@media (max-width: 860px) {
  .mobile-toggle { display: block; }
  .sidebar {
    position: fixed; left: 0; top: 0; z-index: 41; height: 100vh;
    transform: translateX(-100%); transition: transform .2s ease;
    background: #0d0726;
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar-overlay {
    display: none; position: fixed; inset: 0; background: rgba(0,0,0,.5); z-index: 39;
  }
  .sidebar-overlay.show { display: block; }
  .page-wrap { padding: 64px 16px 40px; }
}

/* ---------- Panels / cards ---------- */
.card, .panel, .stat-card {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
  color: var(--text);
}
.stat-card { padding: 16px 18px; }
.stat-card .label { font-size: 12px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .03em; }
.stat-card .value { font-size: 22px; font-weight: 800; margin-top: 4px; letter-spacing: -0.01em; color: var(--text); }

/* ---------- Buttons ---------- */
.btn { border-radius: 10px; font-weight: 600; }
.btn-primary {
  background: var(--brand) !important; border: none !important; color: #fff !important;
  box-shadow: 0 6px 24px rgba(139,92,246,.4);
}
.btn-outline-primary { color: var(--text) !important; border-color: var(--border) !important; background: var(--glass) !important; }
.btn-outline-primary:hover { background: var(--glass-strong) !important; }
.btn-outline-secondary, .btn-outline-danger, .btn-outline-success, .btn-light {
  color: var(--text) !important; border-color: var(--border) !important; background: var(--glass) !important;
}
.btn-outline-secondary:hover, .btn-light:hover { background: var(--glass-strong) !important; }
.btn-outline-danger { color: #f87171 !important; border-color: rgba(248,113,113,.4) !important; }
.btn-outline-danger:hover { background: rgba(248,113,113,.15) !important; }
.btn-outline-success { color: #34d399 !important; border-color: rgba(52,211,153,.4) !important; }
.btn-outline-success:hover { background: rgba(52,211,153,.15) !important; }

/* ---------- Chip buttons (period / mode toggles) ---------- */
.btn-group > .btn,
.chip {
  border: 1px solid var(--border) !important;
  background: var(--glass) !important;
  color: var(--text) !important;
  border-radius: 999px !important;
  padding: 6px 14px !important;
  font-size: 12.5px !important;
  font-weight: 600 !important;
  box-shadow: none !important;
}
.btn-group > .btn:not(:first-child) { margin-left: 6px; }
.btn-group > .btn.btn-primary,
.chip.active {
  background: var(--brand) !important;
  border-color: transparent !important;
  color: #fff !important;
  box-shadow: 0 6px 20px rgba(139,92,246,.35);
}

/* ---------- Forms ---------- */
.form-control, .form-select, input[type=date], input[type=number], input[type=text], input[type=password], textarea {
  background: var(--glass) !important;
  border: 1px solid var(--border) !important;
  color: var(--text) !important;
  border-radius: 10px !important;
}
.form-control:focus, .form-select:focus {
  background: var(--glass-strong) !important;
  border-color: var(--violet) !important;
  color: var(--text) !important;
  box-shadow: 0 0 0 3px rgba(139,92,246,.25) !important;
}
.form-control::placeholder { color: var(--muted); opacity: .8; }
.form-label { color: var(--muted); font-weight: 600; font-size: 12.5px; }
input[type=date]::-webkit-calendar-picker-indicator, input[type=month]::-webkit-calendar-picker-indicator {
  filter: invert(1) brightness(1.6);
}
:root[data-theme="light"] input[type=date]::-webkit-calendar-picker-indicator,
:root[data-theme="light"] input[type=month]::-webkit-calendar-picker-indicator { filter: none; }
.form-select option {
  background: #1a0b3d;
  color: #f1eefc;
}
:root[data-theme="light"] .form-select option {
  background: #ffffff;
  color: #241b40;
}

/* ---------- Tables ---------- */
.table, .bg-white { background: var(--glass) !important; color: var(--text) !important; }
.table-bordered, .table-bordered th, .table-bordered td { border-color: var(--border) !important; }
.table > :not(caption) > * > * { border-color: var(--border); background: transparent; color: var(--text); box-shadow: none; }
.table thead th, .table-light, .table-light > * {
  color: var(--muted) !important; font-size: 11px; text-transform: uppercase; letter-spacing: .03em; font-weight: 700;
  background: rgba(255,255,255,.04) !important;
}
.table-warning, .table-warning > * { background: rgba(236,72,153,.14) !important; color: var(--text) !important; }
.table-secondary, .table-secondary > * { background: rgba(139,92,246,.18) !important; color: var(--text) !important; }
.group-mkt { background: var(--mkt-soft) !important; }
.group-direct { background: var(--direct-soft) !important; }
.table-sm-entry td, .table-sm-entry th { vertical-align: middle; font-size: .85rem; }
.table-sm-entry input { width: 90px; }
.pct-bad { color: #f87171; font-weight: 700; }
.pct-mid { color: #fbbf24; font-weight: 700; }
.pct-good { color: #34d399; font-weight: 700; }

/* ---------- Alerts / badges ---------- */
.alert { border-radius: 12px; border: 1px solid var(--border); }
.alert-danger { background: rgba(248,113,113,.14) !important; color: #fca5a5 !important; border-color: rgba(248,113,113,.35) !important; }
.alert-success { background: rgba(52,211,153,.14) !important; color: #6ee7b7 !important; border-color: rgba(52,211,153,.35) !important; }
.alert-info { background: rgba(34,211,238,.14) !important; color: #67e8f9 !important; border-color: rgba(34,211,238,.35) !important; }
.alert-light { background: var(--glass) !important; color: var(--text) !important; }
.badge.bg-secondary { background: var(--glass-strong) !important; color: var(--muted) !important; }
.badge.bg-light { background: var(--glass-strong) !important; color: var(--text) !important; }

/* ---------- Accordion ---------- */
.accordion-item { background: var(--glass); border: 1px solid var(--border); border-radius: var(--radius) !important; overflow: hidden; }
.accordion-button {
  background: transparent !important; color: var(--text) !important; font-weight: 600;
  box-shadow: none !important;
}
.accordion-button:not(.collapsed) { background: rgba(139,92,246,.12) !important; }
.accordion-button::after { filter: invert(1) brightness(1.8); }
.accordion-body { background: rgba(0,0,0,.1); color: var(--text); }

/* ---------- Login ---------- */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.login-card {
  width: 100%;
  max-width: 380px;
  background: var(--glass-strong);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 32px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}
.today-badge {
  background: var(--cyan);
  color: #04222b;
  border-radius: 20px;
  padding: 2px 12px;
  font-size: .8rem;
  font-weight: 700;
}

/* ---------- Insights page (funnel / block style) ---------- */
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; margin-bottom: 18px; }
.block { border-radius: 16px; padding: 18px; margin-bottom: 22px; border: 1px solid var(--border); background: var(--glass); backdrop-filter: blur(8px); }
.block-mkt { background: linear-gradient(180deg, var(--mkt-soft) 0%, transparent 160px), var(--glass); border-color: rgba(139,92,246,.4); }
.block-direct { background: linear-gradient(180deg, var(--direct-soft) 0%, transparent 160px), var(--glass); border-color: rgba(236,72,153,.4); }
.block-title { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; flex-wrap: wrap; }
.block-title .badge-pill {
  display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 800;
  padding: 5px 12px; border-radius: 999px; color: #fff; letter-spacing: .02em;
}
.badge-mkt { background: var(--violet); box-shadow: 0 4px 14px rgba(139,92,246,.4); }
.badge-direct { background: var(--pink); box-shadow: 0 4px 14px rgba(236,72,153,.4); }
.block-title h2 { font-size: 17px; margin: 0; font-weight: 800; color: var(--text); }
.block-title .sub { font-size: 12px; color: var(--muted); margin-left: auto; }

.funnel { display: flex; flex-direction: column; gap: 10px; margin-top: 6px; }
.funnel-row { display: flex; align-items: center; gap: 12px; }
.funnel-row .flabel { width: 140px; font-size: 12.5px; color: var(--text); font-weight: 600; text-align: right; flex-shrink: 0; }
.funnel-row .fbar-wrap { flex: 1; background: rgba(255,255,255,.06); border-radius: 8px; overflow: hidden; }
.funnel-row .fbar {
  height: 36px; display: flex; align-items: center; justify-content: flex-end; color: #fff;
  font-weight: 700; font-size: 13px; border-radius: 8px; transition: width .4s ease;
  min-width: 42px; white-space: nowrap; padding: 0 10px;
}
.funnel-row .fcount {
  min-width: 60px; font-size: 13px; font-weight: 800; text-align: left; flex-shrink: 0; color: var(--text);
  display: flex; flex-direction: column; gap: 2px;
}
.funnel-row .fcount .delta { margin-top: 0; }

.side-stats { display: flex; gap: 10px; margin-top: 14px; flex-wrap: wrap; }
.side-stat { flex: 1; min-width: 130px; background: rgba(255,255,255,.04); border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; }
.side-stat .n { font-size: 17px; font-weight: 800; color: var(--text); }
.side-stat .t { font-size: 11px; color: var(--muted); margin-top: 2px; }

table.data-table { width: 100%; border-collapse: collapse; font-size: 12.5px; margin-top: 8px; color: var(--text); }
table.data-table th, table.data-table td { padding: 8px 10px; border-bottom: 1px solid var(--border); text-align: left; }
table.data-table th { color: var(--muted); font-weight: 700; font-size: 11px; text-transform: uppercase; }
table.data-table tr:hover td { background: rgba(139,92,246,.1); }

/* ---------- Delta (so với kỳ trước) ---------- */
.delta { display: inline-flex; align-items: center; gap: 3px; font-size: 11.5px; font-weight: 700; margin-top: 4px; }
.delta-up { color: #34d399; }
.delta-down { color: #f87171; }
.delta-flat { color: var(--muted); }

/* ---------- Light theme component overrides ---------- */
:root[data-theme="light"] .sidebar {
  background: rgba(255,255,255,.55);
  border-right: 1px solid var(--border);
}
:root[data-theme="light"] .brand-name,
:root[data-theme="light"] .side-link.active { color: #241b40; }
:root[data-theme="light"] .side-link:hover { color: var(--text); }
:root[data-theme="light"] .mobile-toggle { background: rgba(255,255,255,.85); color: #241b40; border-color: var(--border); }
@media (max-width: 860px) {
  :root[data-theme="light"] .sidebar { background: #fdf2f8; }
}
:root[data-theme="light"] .today-badge { color: #04222b; }
:root[data-theme="light"] .accordion-button:not(.collapsed) { background: rgba(139,92,246,.12) !important; color: var(--text) !important; }
:root[data-theme="light"] .accordion-button::after { filter: none; }
:root[data-theme="light"] .alert-danger { color: #b91c1c !important; }
:root[data-theme="light"] .alert-success { color: #047857 !important; }
:root[data-theme="light"] .alert-info { color: #0e7490 !important; }
:root[data-theme="light"] .pct-bad { color: #dc2626; }
:root[data-theme="light"] .pct-mid { color: #b45309; }
:root[data-theme="light"] .pct-good { color: #059669; }
:root[data-theme="light"] .delta-up { color: #059669; }
:root[data-theme="light"] .delta-down { color: #dc2626; }