/* Base: fluid type, system fonts, CSS variables */
:root {
  --bg: #0b0b10;
  --bg-elev: #111119;
  --fg: #eaecf2;
  --muted: #a3a7b7;
  --card: #15151f;
  --card-border: #222235;
  --accent: #7c5cff;
  --accent-2: #5f8cff;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7f7fb;
    --bg-elev: #ffffff;
    --fg: #0d0f14;
    --muted: #4b5164;
    --card: #ffffff;
    --card-border: #e5e7f0;
    --shadow: 0 10px 30px rgba(20, 20, 40, 0.08);
  }
}

html {
  font-size: clamp(15px, 0.95vw + 12px, 18px);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100dvh;
  background: radial-gradient(1200px 800px at 80% -10%, rgba(124, 92, 255, 0.3), rgba(95, 140, 255, 0.15) 40%, transparent 60%), var(--bg);
  color: var(--fg);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, Apple Color Emoji, Segoe UI Emoji;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  width: min(100%, 1100px);
  margin: 0 auto;
  padding: 1.5rem clamp(1rem, 4vw, 2rem) 3rem;
}

/* Header / Brand */
.site-header { padding: 2.25rem clamp(1rem, 4vw, 2rem) 0; }

.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  width: min(100%, 1100px);
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 2rem);
}

.brand__logo { filter: drop-shadow(0 6px 10px rgba(124, 92, 255, 0.35)); }

.brand__text { display: grid; gap: 0.15rem; }
.brand__title { font-size: 1.5rem; margin: 0; letter-spacing: 0.02em; }
.brand__tagline { margin: 0; color: var(--muted); font-size: 0.95rem; }

/* Cards grid */
.grid {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 1rem;
}

@media (min-width: 640px) { .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 1000px) { .grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }

.card {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: start;
  gap: 0.75rem;
  padding: 1.1rem 1.1rem 1.1rem 1.1rem;
  background: linear-gradient(180deg, var(--card), var(--bg-elev));
  border: 1px solid var(--card-border);
  border-radius: 14px;
  color: inherit;
  text-decoration: none;
  box-shadow: var(--shadow);
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.card:hover {
  transform: translateY(-2px);
  border-color: color-mix(in oklab, var(--accent) 30%, var(--card-border));
  box-shadow: 0 16px 45px rgba(124, 92, 255, 0.18);
}

.card:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

.card__title { margin: 0; font-size: 1.05rem; font-weight: 650; letter-spacing: 0.01em; }
.card__desc { margin: 0.25rem 0 0; color: var(--muted); line-height: 1.35; font-size: 0.95rem; }

.card__chevron {
  align-self: center;
  font-size: 1.2rem;
  color: color-mix(in oklab, var(--accent) 70%, var(--fg));
}

/* Footer */
.site-footer {
  padding: 2rem 1rem 3rem;
  text-align: center;
  color: var(--muted);
}

/* Accessibility helpers */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

/* Motion preferences */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}