/* -------------------------------------------------------
   WPTD — screen.css (professional landing page styles)
   ---------------------------------------------------- */

:root{
  --bg:        #0b1020;
  --panel:     #0f1528;
  --card:      #141c33;
  --ring:      #26345b;
  --text:      #e7ecf3;
  --muted:     #9db0cf;
  --accent:    #7aa7ff;
  --accent-2:  #b8d1ff;
  --shadow:    0 8px 30px rgba(0,0,0,.35);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { height: 100%; }
body {
  margin: 0;
  background: radial-gradient(1200px 600px at 20% -10%, #1a2442 0%, transparent 60%),
              radial-gradient(1200px 600px at 80% -10%, #16203a 0%, transparent 60%),
              var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji","Segoe UI Emoji";
  line-height: 1.55;
}

/* Accessibility */
:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}
.skip-link {
  position: absolute; left: -9999px; top: -9999px;
}
.skip-link:focus {
  left: 12px; top: 12px; z-index: 1000;
  background: var(--accent); color: #0b1020; padding: .5rem .75rem; border-radius: .5rem;
}

.container {
  width: min(1100px, 92vw);
  margin-inline: auto;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--ring);
  background: linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.00));
  backdrop-filter: blur(6px);
}
.header-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  align-items: center;
  padding: 1.25rem 0;
}
.brand {
  display: grid; grid-template-columns: auto 1fr; gap: .85rem; align-items: center;
}
.logo {
  width: 42px; height: 42px; display: inline-grid; place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #0b1020; font-weight: 800; font-size: 1.25rem;
  box-shadow: var(--shadow);
}
.site-title { margin: 0; font-size: clamp(1.1rem, 2.3vw, 1.5rem); }
.site-tagline { margin: .1rem 0 0; color: var(--muted); font-size: .95rem; }

.header-actions .action-list {
  list-style: none; margin: 0; padding: 0;
  display: flex; gap: .5rem; flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: .6rem .9rem;
  border-radius: .65rem;
  background: var(--accent);
  color: #0b1020;
  text-decoration: none;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform .12s ease, box-shadow .12s ease, background .12s ease;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow); }
.btn:active { transform: translateY(0); }

.btn-outline {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}
.btn-outline:hover { background: rgba(122,167,255,.1); }

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--ring);
}
.btn-ghost:hover { border-color: var(--accent); }

/* Hero */
.hero {
  margin: 2.5rem 0 1.75rem;
  padding: 2rem;
  background: linear-gradient(180deg, rgba(122,167,255,.12), rgba(0,0,0,0));
  border: 1px solid var(--ring);
  border-radius: 18px;
}
.hero-heading {
  margin: 0 0 .3rem;
  font-size: clamp(1.4rem, 3vw, 2rem);
}
.hero-sub {
  margin: 0 0 1rem; color: var(--muted);
}
.hero-cta {
  list-style: none; padding: 0; margin: 0;
  display: flex; gap: .6rem; flex-wrap: wrap;
}

/* Sections */
.section-heading {
  margin: 2rem 0 1rem;
  font-size: clamp(1.2rem, 2.3vw, 1.6rem);
  letter-spacing: .2px;
}

/* Cards */
.cards { margin-top: 1rem; }
.card-list {
  list-style: none; padding: 0; margin: 0;
  display: grid; gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.card {
  background: var(--card);
  border: 1px solid var(--ring);
  border-radius: 16px;
  padding: 1rem 1.1rem;
  transition: border-color .15s ease, transform .15s ease, box-shadow .15s ease;
}
.card h3 { margin: .2rem 0 .4rem; font-size: 1.05rem; }
.card p { margin: 0 0 .75rem; color: var(--muted); }
.card-link {
  color: var(--accent); text-decoration: none; font-weight: 600;
  border-bottom: 1px dashed transparent;
}
.card:hover { transform: translateY(-2px); border-color: var(--accent); box-shadow: var(--shadow); }
.card:hover .card-link { border-bottom-color: var(--accent); }

/* Checklist */
.section-slim { margin-top: 1.25rem; }
.checklist {
  margin: .5rem 0 0; padding: 0 0 0 1.15rem;
}
.checklist li { padding: .25rem 0; }

/* Footer */
.site-footer {
  margin-top: 2rem;
  border-top: 1px solid var(--ring);
  background: linear-gradient(0deg, rgba(255,255,255,.03), rgba(255,255,255,0));
}
.footer-grid {
  display: grid; grid-template-columns: 1fr auto; gap: 1rem; align-items: center;
  padding: 1rem 0;
}
.footer-links {
  list-style: none; margin: 0; padding: 0; display: flex; gap: .8rem; flex-wrap: wrap;
}
.footer-links a { color: var(--accent); text-decoration: none; }

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}