/* ================================================================
   QUANTIX — Design System CSS  (v2 – full rewrite)
   Voxie-inspired: deep black, vivid cards, Space Grotesk
   ================================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700;800&display=swap');

/* ── Tokens ────────────────────────────────────────────────────── */
:root {
  --bg:            #111111;
  --bg-sidebar:    #0A0A0A;
  --bg-card:       rgba(255,255,255,0.045);
  --bg-card-hover: rgba(255,255,255,0.08);
  --border:        rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.15);

  --yellow:  #F5C800;
  --orange:  #FF6B35;
  --pink:    #FF3D77;
  --cyan:    #00E5D4;
  --green:   #7AE582;
  --purple:  #B388FF;

  --text-w: #FFFFFF;
  --text-s: rgba(255,255,255,0.50);
  --text-b: #000000;

  --sidebar-w: 230px;
  --r:  16px;
  --rs: 10px;
  --ease: .28s cubic-bezier(.4,0,.2,1);
}

/* ── Reset ─────────────────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Space Grotesk',system-ui,sans-serif;
  background:var(--bg);
  color:var(--text-w);
  min-height:100vh;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
button{font-family:inherit;cursor:pointer}
a{text-decoration:none;color:inherit}

/* ── Scrollbar ─────────────────────────────────────────────────── */
::-webkit-scrollbar{width:5px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:9px}

/* ================================================================
   LAYOUT — sidebar fixed, main offset by margin
   ================================================================ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--bg-sidebar);
  border-right:1px solid var(--border);
  display:flex;flex-direction:column;
  padding:30px 0 20px;
  z-index:100;
  overflow-y:auto;
}
.main-content{
  margin-left:var(--sidebar-w);
  padding:40px 48px 80px;
  width:calc(100% - var(--sidebar-w));
  min-height:100vh;
}

/* ── Sidebar internals ─────────────────────────────────────────── */
.sidebar-logo{
  display:flex;align-items:center;gap:11px;
  padding:0 26px 36px;
}
.logo-icon{
  width:38px;height:38px;
  background:var(--yellow);border-radius:9px;
  display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:900;color:#000;flex-shrink:0;
}
.logo-text{
  font-size:23px;font-weight:800;
  letter-spacing:-.04em;color:var(--text-w);
}
.sidebar-section-label{
  font-size:10px;font-weight:700;
  text-transform:uppercase;letter-spacing:.14em;
  color:var(--text-s);padding:0 26px 10px;margin-top:10px;
}
.sidebar nav{display:flex;flex-direction:column;gap:2px;padding:0 14px;flex:1}
.nav-link{
  display:flex;align-items:center;gap:12px;
  padding:12px 14px;border-radius:var(--rs);
  color:var(--text-s);font-size:14px;font-weight:500;
  transition:var(--ease);border:none;background:transparent;
  width:100%;text-align:left;
}
.nav-link .nav-icon{font-size:16px;width:22px;text-align:center;flex-shrink:0}
.nav-link .nav-badge{
  margin-left:auto;font-size:10px;font-weight:700;
  background:var(--yellow);color:#000;
  border-radius:5px;padding:2px 7px;
}
.nav-link:hover{color:var(--text-w);background:var(--bg-card-hover)}
.nav-link.active{background:var(--yellow);color:#000 !important;font-weight:700}
.nav-link.active-orange{background:var(--orange) !important}
.nav-link.active-pink{background:var(--pink) !important;color:#fff !important}
.sidebar-divider{height:1px;background:var(--border);margin:16px 26px}

/* ── Page header ───────────────────────────────────────────────── */
.page-header{
  display:flex;align-items:flex-start;justify-content:space-between;
  margin-bottom:36px;gap:20px;flex-wrap:wrap;
}
.page-title{font-size:34px;font-weight:800;letter-spacing:-.03em;line-height:1.1}
.page-subtitle{font-size:14px;color:var(--text-s);margin-top:5px;font-weight:500}
.page-header-right{display:flex;gap:10px;align-items:center}

/* ================================================================
   HERO CARDS  (home page top banner cards)
   ================================================================ */
.hero-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;margin-bottom:40px;
}
.hero-card{
  border-radius:var(--r);
  padding:32px 32px 26px;
  position:relative;overflow:hidden;
  cursor:pointer;transition:var(--ease);
  min-height:220px;
  display:flex;flex-direction:column;justify-content:space-between;
}
.hero-card:hover{transform:translateY(-4px);filter:brightness(1.06)}
.hero-card-yellow{background:var(--yellow)}
.hero-card-orange{background:var(--orange)}
.hero-card-meta{
  font-size:12px;font-weight:700;color:rgba(0,0,0,.5);
  text-transform:uppercase;letter-spacing:.08em;
}
.hero-card h2{
  font-size:30px;font-weight:800;color:#000;
  letter-spacing:-.03em;line-height:1.15;margin-top:8px;
}
.hero-card-btn{
  display:inline-flex;align-items:center;gap:8px;
  background:#000;color:#fff;border:none;border-radius:9px;
  padding:11px 20px;font-size:13px;font-weight:700;
  font-family:inherit;cursor:pointer;transition:var(--ease);
  width:fit-content;margin-top:18px;
}
.hero-card-btn:hover{background:#222}
.hero-card-illustration{
  position:absolute;right:28px;top:50%;transform:translateY(-50%);
  font-size:100px;opacity:.16;pointer-events:none;line-height:1;
}

/* ================================================================
   KPI CARDS
   ================================================================ */
.kpi-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;margin-bottom:32px;
}
.kpi-card{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--r);
  padding:24px 24px 20px;
  position:relative;overflow:hidden;
  transition:var(--ease);
}
.kpi-card:hover{background:var(--bg-card-hover);border-color:var(--border-strong)}
.kpi-label{
  font-size:11px;font-weight:700;color:var(--text-s);
  text-transform:uppercase;letter-spacing:.1em;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.kpi-value{
  font-size:38px;font-weight:800;letter-spacing:-.04em;
  line-height:1;margin-top:10px;
  font-variant-numeric:tabular-nums;
  white-space:nowrap;
}
.kpi-sub{
  font-size:12px;color:var(--text-s);margin-top:8px;
  display:flex;align-items:center;gap:5px;
}
.kpi-accent-bar{
  position:absolute;top:0;left:0;right:0;height:3px;
}
.accent-yellow .kpi-accent-bar{background:var(--yellow)}
.accent-yellow .kpi-value{color:var(--yellow)}
.accent-orange .kpi-accent-bar{background:var(--orange)}
.accent-orange .kpi-value{color:var(--orange)}
.accent-cyan   .kpi-accent-bar{background:var(--cyan)}
.accent-cyan   .kpi-value{color:var(--cyan)}
.accent-green  .kpi-accent-bar{background:var(--green)}
.accent-green  .kpi-value{color:var(--green)}
.accent-pink   .kpi-accent-bar{background:var(--pink)}
.accent-pink   .kpi-value{color:var(--pink)}
.badge-up{color:var(--green);font-weight:700}
.badge-down{color:var(--pink);font-weight:700}

/* ================================================================
   FILTER / PILL BAR
   ================================================================ */
.filter-bar{
  display:flex;gap:10px;align-items:center;
  margin-bottom:32px;flex-wrap:wrap;
}
.filter-label{font-size:13px;color:var(--text-s);font-weight:600;margin-right:4px}
.pill{
  padding:8px 18px;border-radius:50px;
  font-size:13px;font-weight:600;
  border:1px solid var(--border-strong);
  background:transparent;color:var(--text-s);
  transition:var(--ease);font-family:inherit;
  white-space:nowrap;
}
.pill:hover{color:var(--text-w);border-color:var(--text-w)}
.pill.active{background:var(--yellow);color:#000;border-color:var(--yellow)}
.pill.active-pink{background:var(--pink) !important;color:#fff !important;border-color:var(--pink) !important}

/* ================================================================
   CHART GRID  &  CHART CARDS
   ================================================================ */
.charts-row{display:grid;gap:20px;margin-bottom:22px}
.charts-row-2{grid-template-columns:1fr 1fr}
.charts-row-3{grid-template-columns:1fr 1fr 1fr}
.charts-row-auto{grid-template-columns:3fr 2fr}
.charts-row-wide{grid-template-columns:1fr}

.chart-card{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--r);
  padding:28px;transition:var(--ease);
}
.chart-card:hover{border-color:var(--border-strong)}
.chart-card-title{font-size:16px;font-weight:700;margin-bottom:4px}
.chart-card-sub{font-size:12px;color:var(--text-s);margin-bottom:22px}
.chart-wrap{position:relative;width:100%}

/* ================================================================
   FEATURE CARDS  (home bottom row)
   ================================================================ */
.feature-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;margin-top:32px;
}
.feature-card{
  border-radius:var(--r);padding:24px 22px;
  cursor:pointer;transition:var(--ease);
  position:relative;overflow:hidden;
}
.feature-card:hover{transform:translateY(-3px);filter:brightness(1.08)}
.feature-card-icon{font-size:30px;margin-bottom:12px}
.feature-card-label{
  font-size:11px;font-weight:700;text-transform:uppercase;
  letter-spacing:.1em;color:rgba(0,0,0,.55);
}
.feature-card-value{
  font-size:22px;font-weight:800;color:#000;
  letter-spacing:-.02em;margin-top:5px;
}
.fc-yellow{background:var(--yellow)}
.fc-orange{background:var(--orange)}
.fc-pink{background:var(--pink)}
.fc-cyan{background:var(--cyan)}
.fc-green{background:var(--green)}

/* ── Section header ────────────────────────────────────────────── */
.section-header{
  display:flex;align-items:center;justify-content:space-between;
  margin-bottom:20px;
}
.section-title{font-size:20px;font-weight:800;letter-spacing:-.02em}
.section-link{font-size:13px;color:var(--yellow);font-weight:600;cursor:pointer}

/* ================================================================
   DATA TABLE
   ================================================================ */
.data-table{width:100%;border-collapse:collapse}
.data-table th{
  text-align:left;font-size:11px;font-weight:700;
  text-transform:uppercase;letter-spacing:.1em;color:var(--text-s);
  padding:0 14px 14px;border-bottom:1px solid var(--border);
}
.data-table td{
  padding:14px;font-size:13px;font-weight:500;
  border-bottom:1px solid rgba(255,255,255,.03);
}
.data-table tr:last-child td{border-bottom:none}
.data-table tbody tr:hover td{background:var(--bg-card-hover)}

/* ── Progress bar ──────────────────────────────────────────────── */
.progress-track{height:6px;background:rgba(255,255,255,.06);border-radius:10px;overflow:hidden}
.progress-fill{height:100%;border-radius:10px;transition:width 1s ease}

/* ================================================================
   RECOMMENDATION CARDS
   ================================================================ */
.rec-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:10px}
.rec-card{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--r);padding:22px;transition:var(--ease);
}
.rec-card:hover{border-color:var(--yellow)}
.rec-icon{font-size:30px;margin-bottom:12px}
.rec-title{font-size:15px;font-weight:700;margin-bottom:6px}
.rec-desc{font-size:13px;color:var(--text-s);line-height:1.55}

/* ================================================================
   CONFUSION MATRIX
   ================================================================ */
.confusion-matrix{
  display:grid;grid-template-columns:1fr 1fr;
  gap:10px;max-width:320px;margin:20px auto 0;
}
.cm-cell{border-radius:12px;padding:20px 14px;text-align:center}
.cm-cell .cm-num{font-size:28px;font-weight:800;letter-spacing:-.03em}
.cm-cell .cm-lbl{font-size:11px;font-weight:600;margin-top:4px;opacity:.7}
.cm-tp{background:rgba(122,229,130,.15);color:var(--green)}
.cm-fp{background:rgba(255,61,119,.12);color:var(--pink)}
.cm-fn{background:rgba(255,107,53,.12);color:var(--orange)}
.cm-tn{background:rgba(0,229,212,.12);color:var(--cyan)}

/* ── Heatmap ───────────────────────────────────────────────────── */
.heatmap-grid{
  display:grid;grid-template-columns:repeat(6,1fr);
  gap:8px;padding-top:14px;
}
.heat-cell{
  border-radius:8px;padding:12px 8px;text-align:center;
  font-size:11px;font-weight:700;transition:var(--ease);cursor:default;
}
.heat-cell:hover{transform:scale(1.08)}

/* ── Page toggle ───────────────────────────────────────────────── */
.page{display:none}
.page.active{display:block}

/* ── Buttons ───────────────────────────────────────────────────── */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;border-radius:9px;
  font-family:inherit;font-size:13px;font-weight:700;
  cursor:pointer;border:none;transition:var(--ease);
}
.btn-primary{background:var(--yellow);color:#000}
.btn-primary:hover{background:#ffd400}
.btn-outline{background:transparent;color:var(--text-w);border:1px solid var(--border-strong)}
.btn-outline:hover{border-color:var(--text-w)}

/* ── Fade in ───────────────────────────────────────────────────── */
.fade-in{opacity:0;transform:translateY(18px);transition:opacity .5s ease,transform .5s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media(max-width:1200px){
  .kpi-grid{grid-template-columns:repeat(2,1fr)}
  .charts-row-2,.charts-row-auto{grid-template-columns:1fr}
  .rec-grid{grid-template-columns:1fr}
}
@media(max-width:900px){
  :root{--sidebar-w:68px}
  .sidebar-logo .logo-text,.nav-link span:not(.nav-icon),
  .sidebar-section-label,.nav-link .nav-badge{display:none}
  .nav-link{justify-content:center;padding:14px}
  .hero-grid{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .main-content{padding:28px 20px 60px}
  .page-title{font-size:26px}
  .heatmap-grid{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:600px){
  :root{--sidebar-w:0px}
  .sidebar{display:none}
  .kpi-grid{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:1fr}
}