:root {
  --bg: #0f172a;
  --bg-2: #111c33;
  --surface: #1e293b;
  --surface-2: #273347;
  --border: #334155;
  --text: #e2e8f0;
  --text-dim: #94a3b8;
  --accent: #3b82f6;
  --accent-2: #8b5cf6;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(59,130,246,0.18), transparent 60%),
    radial-gradient(1000px 500px at 110% 10%, rgba(139,92,246,0.18), transparent 60%),
    var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 28px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-logo {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
}

.brand-title {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.brand-tagline {
  font-size: 12px;
  color: var(--text-dim);
}

.launcher {
  margin: 0 auto;
  padding: 20px 28px 28px;
}

.tile-grid {
  display: grid;
  /* Explicit column counts per breakpoint — auto-fit was inconsistent
     across browsers (Edge in particular sometimes capped at 2 cols
     even on a 1920px viewport). Mobile-first: start at 1 col and
     widen via min-width media queries below. */
  grid-template-columns: 1fr;
  gap: 14px;
}
@media (min-width: 700px) {
  .tile-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 1100px) {
  .tile-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (min-width: 1500px) {
  .tile-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

.tile {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 18px;
  border-radius: 14px;
  text-decoration: none;
  color: var(--text);
  background: linear-gradient(180deg, var(--surface), var(--bg-2));
  border: 1px solid var(--border);
  transition: transform 120ms ease, border-color 120ms ease, box-shadow 120ms ease;
  position: relative;
  overflow: hidden;
}

.tile::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(59,130,246,0.0), rgba(139,92,246,0.0));
  pointer-events: none;
  transition: background 200ms ease;
}

.tile:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: 0 10px 30px -10px rgba(59,130,246,0.35);
}

.tile:hover::after {
  background: linear-gradient(135deg, rgba(59,130,246,0.08), rgba(139,92,246,0.08));
}

.tile:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.tile.is-disabled {
  pointer-events: none;
  opacity: 0.65;
}

.tile-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: rgba(0,0,0,0.25);
  border: 1px solid rgba(255,255,255,0.05);
}

.tile-icon svg {
  border-radius: 10px;
}

.tile-name {
  font-size: 16px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.tile-features {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.tile-features li {
  font-size: 12px;
  line-height: 1.45;
  color: var(--text);
  padding-left: 14px;
  position: relative;
}
.tile-features li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 7px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.7;
}

.tile-badge {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 2px 6px;
  border-radius: 999px;
  color: #fde68a;
  background: rgba(234,179,8,0.18);
  border: 1px solid rgba(234,179,8,0.35);
}

/* About section — appears below the tile grid. Three-column layout
   that collapses to single column on narrow viewports. Capped width
   so it stays readable when the tile grid above stretches the full
   viewport on wide screens. */
.about {
  max-width: 1100px;
  margin: 56px auto 0;
  padding-top: 36px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.about-heading {
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 20px;
}
.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.about-col {
  background: linear-gradient(180deg, rgba(30,41,59,0.55), rgba(15,28,51,0.55));
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 20px;
}
.about-col-title {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 10px;
}
.about-col p {
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--text-dim);
  margin: 0;
}
.about-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.about-list li {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--text-dim);
  padding-left: 14px;
  position: relative;
}
.about-list li::before {
  content: "›";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent);
  opacity: 0.7;
}
.about-list strong {
  color: var(--text);
  font-weight: 600;
}
.about-list code {
  background: rgba(255,255,255,0.06);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 11.5px;
}

.footer {
  max-width: 1100px;
  margin: 24px auto 28px;
  padding: 0 28px;
  color: var(--text-dim);
  font-size: 12px;
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.footer a {
  color: var(--text-dim);
  text-decoration: none;
}
.footer a:hover { color: var(--text); }
.footer-sep { opacity: 0.5; }

/* Stub "coming soon" pages share these styles via .stub */
.stub {
  max-width: 720px;
  margin: 80px auto 0;
  padding: 0 28px;
  text-align: center;
}
.stub h1 { font-size: 28px; margin: 0 0 10px; }
.stub p { color: var(--text-dim); margin: 0 0 24px; }
.stub a.back {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 10px;
  text-decoration: none;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
}
.stub a.back:hover { border-color: var(--accent); }

/* 404 page */
.notfound {
  max-width: 480px;
  margin: 120px auto 0;
  padding: 0 28px;
  text-align: center;
}
.notfound h1 { font-size: 64px; margin: 0; }
.notfound a { color: var(--accent); }

@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 14px; }
}

@media (max-width: 520px) {
  .launcher { padding: 14px 18px 18px; }
  .about { margin-top: 36px; padding-top: 24px; }
  .about-heading { font-size: 19px; }
}