/* ── Reset & Tokens ── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root {
  --bg:         #0f1117;
  --surface:    #1a1d27;
  --surface-alt:#222632;
  --border:     #2e3344;
  --text:       #e4e6f0;
  --text-muted: #8b8fa4;
  --accent:     #6c8cff;
  --accent-dim: #3b5bdb;
  --green:      #51cf66;
  --orange:     #ff922b;
  --red:        #ff6b6b;
  --purple:     #a78bfa;
  --radius:     12px;
  --transition: .25s cubic-bezier(.4,0,.2,1);
}

html { scroll-behavior: smooth }

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

/* ── Utility ── */
.container { max-width: 1320px; margin: 0 auto; padding: 0 1.5rem }
.sr-only { position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0) }

/* ── Header ── */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15,17,23,.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.logo {
  font-size: 1.15rem;
  font-weight: 700;
  background: linear-gradient(135deg, #6c8cff, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
}

/* ── Nav ── */
.main-nav { display: flex; gap: .35rem; flex-wrap: wrap }
.main-nav button {
  background: none;
  border: 1px solid transparent;
  color: var(--text-muted);
  padding: .4rem 1rem;
  border-radius: 999px;
  font-size: .82rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.main-nav button:hover { color: var(--text); border-color: var(--border) }
.main-nav button.active {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(108,140,255,.1);
}

/* ── Hero ── */
.hero {
  text-align: center;
  padding: 4.5rem 1.5rem 2.5rem;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  letter-spacing: -.5px;
  background: linear-gradient(135deg, #6c8cff, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero p {
  max-width: 640px;
  margin: .75rem auto 0;
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* ── Vendor filter chips ── */
.vendor-filters {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: .5rem;
  padding: 1.5rem 0 .5rem;
}
.vendor-chip {
  display: flex;
  align-items: center;
  gap: .4rem;
  padding: .4rem .9rem;
  border-radius: 999px;
  font-size: .82rem;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  transition: var(--transition);
  user-select: none;
}
.vendor-chip .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  transition: var(--transition);
  opacity: .4;
}
.vendor-chip.active {
  color: var(--text);
  border-color: var(--accent-dim);
  background: rgba(108,140,255,.08);
}
.vendor-chip.active .dot { opacity: 1 }
.vendor-chip:hover { border-color: var(--accent-dim) }

/* ── Page sections ── */
.page-section {
  display: none;
  animation: fadeIn .3s ease;
  padding-bottom: 3rem;
}
.page-section.active { display: block }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px) }
  to   { opacity: 1; transform: translateY(0) }
}

.section-head { margin-bottom: 1.75rem }
.section-head h2 { font-size: 1.5rem; margin-bottom: .2rem }
.section-head p  { color: var(--text-muted) }

/* ── Cards grid ── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem;
  transition: border-color var(--transition), transform var(--transition), opacity var(--transition);
}
.card.dimmed { opacity: .3; pointer-events: none }
.card:hover { border-color: var(--accent-dim); transform: translateY(-2px) }
.card h3 { font-size: 1.05rem; margin-bottom: .4rem; display: flex; align-items: center; gap: .5rem }
.card h3 .dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0 }
.card p  { color: var(--text-muted); font-size: .88rem }
.card ul {
  margin-top: .65rem;
  padding-left: 1.15rem;
  color: var(--text-muted);
  font-size: .85rem;
}
.card ul li { margin-bottom: .3rem }
.card ul li::marker { color: var(--accent) }

/* ── Table ── */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 2rem;
}
table { width: 100%; min-width: 860px; border-collapse: collapse }
thead th {
  background: var(--surface-alt);
  padding: .75rem 1rem;
  text-align: left;
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .6px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 60px;
  z-index: 5;
}
tbody td {
  padding: .75rem 1rem;
  border-bottom: 1px solid var(--border);
  font-size: .88rem;
  vertical-align: top;
}
tbody tr:last-child td { border-bottom: none }
tbody tr { transition: background var(--transition), opacity var(--transition) }
tbody tr:hover { background: rgba(108,140,255,.04) }
tbody tr.dimmed { opacity: .15 }

.vendor-name { font-weight: 600; white-space: nowrap; display: flex; align-items: center; gap: .45rem }
.vendor-name .dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0 }

.badge {
  display: inline-block;
  padding: .12rem .5rem;
  border-radius: 999px;
  font-size: .72rem;
  font-weight: 600;
}
.badge-entry      { background: rgba(81,207,102,.12);  color: var(--green) }
.badge-midrange   { background: rgba(255,146,43,.12);  color: var(--orange) }
.badge-enterprise { background: rgba(108,140,255,.12); color: var(--accent) }

/* ── Feature table ── */
.feature-table td:first-child {
  font-weight: 600;
  white-space: nowrap;
  color: var(--text);
}
.feature-table td { min-width: 160px }

/* ── Takeaways ── */
.takeaway-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}
.takeaway {
  background: var(--surface);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1.2rem;
  transition: opacity var(--transition);
}
.takeaway.dimmed { opacity: .2 }
.takeaway strong { display: flex; align-items: center; gap: .4rem; margin-bottom: .3rem }
.takeaway strong .dot { width: 8px; height: 8px; border-radius: 50% }
.takeaway p { color: var(--text-muted); font-size: .86rem }

/* ── Footer ── */
.app-footer {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--text-muted);
  font-size: .78rem;
  border-top: 1px solid var(--border);
  margin-top: 2rem;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .header-inner { flex-direction: column; height: auto; padding: .75rem 0; gap: .5rem }
  .main-nav { justify-content: center }
  .hero { padding: 3rem 1rem 1.5rem }
  thead th { top: 0 }
}