/* angrist.app portal (specification.md §7.4): one page of cards, system fonts only, no third-party
   resource, light and dark from prefers-color-scheme. Every text/background pair here is at
   least 4.5:1 in both themes; focus is a visible 3px ring, never removed. */

:root {
  color-scheme: light dark;
  --bg: #f6f7f9;
  --surface: #ffffff;
  --text: #1b1f27;
  --muted: #4d5566;          /* 7.3:1 on --surface */
  --line: #d9dde5;
  --accent: #1f4e9e;         /* 7.4:1 on --surface */
  --accent-text: #ffffff;
  --badge-bg: #e7ecf5;
  --badge-text: #24355c;     /* 9.3:1 on --badge-bg */
  --soon-bg: #fff3d6;
  --soon-text: #6b4a00;      /* 7.5:1 on --soon-bg */
  --focus: #d97706;
  --radius: 14px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12151c;
    --surface: #1c2130;
    --text: #eef0f4;
    --muted: #b3bac8;        /* 8.6:1 on --surface */
    --line: #2f364a;
    --accent: #8fb4ff;       /* 8.9:1 on --surface as text */
    --accent-text: #0d1a33;  /* 9.7:1 on --accent */
    --badge-bg: #26304a;
    --badge-text: #d5deff;   /* 9.1:1 on --badge-bg */
    --soon-bg: #4a3a12;
    --soon-text: #ffe1a3;    /* 8.6:1 on --soon-bg */
    --focus: #ffb454;
  }
}

* { box-sizing: border-box; }

html { font-family: system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, Cantarell, sans-serif; line-height: 1.5; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--accent); }
a:hover { text-decoration-thickness: 2px; }

:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; border-radius: 4px; }

.skip {
  position: absolute; left: 1rem; top: -4rem;
  background: var(--surface); color: var(--text); padding: .5rem 1rem; border-radius: 8px;
  border: 1px solid var(--line); z-index: 10;
}
.skip:focus { top: 1rem; }

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

.site-header, main, .site-footer {
  width: min(64rem, 100% - 2rem);
  margin-inline: auto;
}

.site-header { padding-block: 2.5rem 1rem; }
.brand { margin: 0; font-size: clamp(1.75rem, 4vw, 2.5rem); font-weight: 800; letter-spacing: -0.02em; }
.brand__domain { color: var(--text); }
.strap { margin: .5rem 0 0; color: var(--muted); font-size: 1.05rem; max-width: 40rem; }

main { flex: 1; padding-block: 1rem 2rem; }

.cards {
  list-style: none; margin: 0; padding: 0;
  display: grid; gap: 1rem;
  grid-template-columns: 1fr;
}
@media (min-width: 40rem) { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 64rem) { .cards { grid-template-columns: repeat(3, 1fr); } }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: grid;
  grid-template-columns: 4rem 1fr;
  grid-template-areas:
    "icon head"
    "body body"
    "actions actions";
  gap: .75rem 1rem;
  height: 100%;
}
.card__icon { grid-area: icon; width: 4rem; height: 4rem; border-radius: 12px; object-fit: contain; }
.card__head { grid-area: head; align-self: center; }
.card__name { margin: 0; font-size: 1.35rem; line-height: 1.2; }
.card__meta { margin: .25rem 0 0; color: var(--muted); font-size: .9rem; }
.card__body { grid-area: body; }
.card__tagline { margin: 0; }
.card__notes { margin: .5rem 0 0; color: var(--muted); font-size: .95rem; }
.card__actions { grid-area: actions; display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; }

.badges { display: inline-flex; flex-wrap: wrap; gap: .35rem; margin: 0; padding: 0; list-style: none; }
.badge {
  display: inline-block; padding: .1rem .55rem; border-radius: 999px;
  background: var(--badge-bg); color: var(--badge-text); font-size: .8rem; font-weight: 600;
}
.badge--soon { background: var(--soon-bg); color: var(--soon-text); }

.button {
  display: inline-block; padding: .55rem 1.1rem; border-radius: 10px; font-weight: 700;
  text-decoration: none; background: var(--accent); color: var(--accent-text);
  border: 2px solid transparent;
}
.button:hover { filter: brightness(1.08); }
.button--secondary { background: transparent; color: var(--accent); border-color: var(--accent); }

.error { background: var(--soon-bg); color: var(--soon-text); padding: 1rem; border-radius: var(--radius); }

.site-footer { padding-block: 1.5rem 2.5rem; color: var(--muted); font-size: .95rem; border-top: 1px solid var(--line); }
.site-footer p { margin: 0; }

/* privacy.html */
.prose { max-width: 42rem; }
.prose h1 { font-size: 1.75rem; }
.prose h2 { font-size: 1.2rem; margin-top: 1.75rem; }