/* =========================
   IDS by XPRIZE — styles.css
   Clean, fast, SEO-friendly UI
   ========================= */

/* --- Reset / base --- */
*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  line-height: 1.6;
  color: #eaf0ff;
  background: radial-gradient(1200px 600px at 15% 10%, rgba(100,140,255,.12), transparent 60%),
              radial-gradient(900px 500px at 80% 20%, rgba(90,255,210,.08), transparent 60%),
              #0b1020;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
p { margin: 0 0 1rem; }
ul { margin: 0; padding-left: 1.2rem; }
li { margin: .35rem 0; }

:focus-visible {
  outline: 2px solid rgba(120, 170, 255, 0.9);
  outline-offset: 3px;
  border-radius: 10px;
}

/* --- Layout helpers --- */
.header,
.main,
.footer {
  width: 100%;
}

.section {
  padding: 3rem 1.25rem;
}

.section-head {
  max-width: 1100px;
  margin: 0 auto 1.25rem;
}

.section-head h2 {
  margin: 0 0 .35rem;
  font-size: clamp(1.35rem, 1.1rem + 1vw, 2rem);
  letter-spacing: -0.02em;
}

.section-head p {
  margin: 0;
  color: rgba(234, 240, 255, 0.78);
}

/* --- Skip link --- */
.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: #101a35;
  color: #fff;
  padding: .65rem .9rem;
  border-radius: 12px;
  z-index: 9999;
}
.skip:focus {
  left: 1rem;
  top: 1rem;
}

/* --- Nav --- */
.nav {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: .6rem;
}

.brand a {
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: 1.1rem;
}

.brand .meta {
  font-size: .9rem;
  color: rgba(234, 240, 255, 0.68);
}

.menu {
  display: flex;
  align-items: center;
  gap: .9rem;
  flex-wrap: wrap;
}

.menu a {
  padding: .45rem .6rem;
  border-radius: 12px;
  color: rgba(234, 240, 255, 0.84);
}
.menu a:hover {
  background: rgba(255,255,255,.06);
  color: #fff;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .65rem .9rem;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.06);
  color: #fff;
  font-weight: 600;
  transition: transform .12s ease, background .12s ease, border-color .12s ease;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
  background: rgba(255,255,255,.10);
  border-color: rgba(255,255,255,.18);
}

.btn.primary {
  background: linear-gradient(135deg, rgba(95,140,255,.95), rgba(95,255,210,.55));
  border-color: rgba(120, 170, 255, .45);
  color: #061024;
}

.btn.primary:hover {
  filter: brightness(1.02);
}

.btn.ghost {
  background: transparent;
  border-color: rgba(255,255,255,.18);
}

.cta {
  display: flex;
  gap: .75rem;
  flex-wrap: wrap;
  margin: 1.25rem 0 1rem;
}

/* --- Hero --- */
.hero {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 2rem;
}

.hero h1 {
  margin: 0 0 .75rem;
  font-size: clamp(2rem, 1.4rem + 2vw, 3.2rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.hero p {
  margin: 0;
  max-width: 70ch;
  color: rgba(234, 240, 255, 0.82);
  font-size: 1.05rem;
}

.badges {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: flex;
  gap: .6rem;
  flex-wrap: wrap;
}

.badges li {
  padding: .45rem .65rem;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.05);
  color: rgba(234, 240, 255, 0.86);
  font-size: .9rem;
}

/* --- Cards / grid --- */
.grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1rem;
}

.card {
  grid-column: span 4;
  border-radius: 18px;
  padding: 1.1rem 1.1rem 1rem;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.05);
  box-shadow:
    0 10px 30px rgba(0,0,0,.25),
    inset 0 1px 0 rgba(255,255,255,.06);
  backdrop-filter: blur(8px);
  transition: transform .14s ease, border-color .14s ease, background .14s ease;
}

.card:hover {
  transform: translateY(-2px);
  border-color: rgba(120, 170, 255, .30);
  background: rgba(255,255,255,.06);
}

.card h3 {
  margin: 0 0 .45rem;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.card p {
  margin: 0;
  color: rgba(234, 240, 255, 0.78);
}

.card.wide {
  grid-column: span 12;
}

/* --- Tags --- */
.tags {
  list-style: none;
  padding: 0;
  margin: .9rem 0 0;
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
}

.tags li {
  margin: 0;
  padding: .35rem .55rem;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.04);
  color: rgba(234, 240, 255, 0.86);
  font-size: .85rem;
}

/* --- Footer --- */
.footer {
  padding: 2rem 1.25rem 2.5rem;
  color: rgba(234, 240, 255, 0.68);
}

.footer p {
  max-width: 1100px;
  margin: 0 auto;
}

/* --- Responsive --- */
@media (max-width: 980px) {
  .card { grid-column: span 6; }
}

@media (max-width: 640px) {
  .nav { flex-direction: column; align-items: flex-start; }
  .menu { gap: .35rem; }
  .hero { padding-top: 1.75rem; }
  .card { grid-column: span 12; }
}