*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  color-scheme: light dark;
  --bg:           #f5f7fa;
  --card-bg:      #ffffff;
  --text:         #1a1a1a;
  --muted:        #4a5568;
  --border:       #dde3ec;
  --blue-dark:    #003558;
  --teal:         #007f8e;
  --teal-dark:    #007a88;
  --blue-mid:     #005b8e;
  --blue-mid-drk: #00406a;
  --grey:         #5c6b7a;
  --info:         #b8761a;   /* warm amber – scratch-card / info card accent */
  --info-dark:    #8e5a13;
  --notice-bg:    #fff8e1;
  --notice-border:#f59e0b;
  --radius:       10px;
  --shadow:       0 2px 10px rgba(0,53,88,0.10);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
  font-family: var(--font);
  font-size: 18px;
  line-height: 1.65;
  background: var(--bg);
  color: var(--text);
}

/* ── Header / Language switcher ── */
header {
  background: var(--blue-dark);
  padding: 0.6rem 1.5rem;
}
header nav a {
  color: #a8c8e0;
  text-decoration: none;
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.6rem;
  border-radius: 5px;
  transition: background 0.15s, color 0.15s;
}
header nav a:hover,
header nav a:focus {
  background: rgba(255,255,255,0.15);
  color: #fff;
  outline: none;
}
header nav a:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

/* ── Main layout ── */
main {
  max-width: 680px;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

/* ── Decommission notice ── */
.notice {
  background: var(--notice-bg);
  border-left: 4px solid var(--notice-border);
  border-radius: var(--radius);
  padding: 0.9rem 1.1rem;
  margin-bottom: 0.9rem;
  font-size: 1.05rem;
  color: #7a4a00;
}
p.intro {
  color: var(--muted);
  margin-bottom: 2rem;
  font-size: 1rem;
}

/* ── Cards ── */
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem 1.75rem;
  margin-bottom: 1.5rem;
  border-left: 5px solid var(--teal);
}
.card.secondary { border-left-color: var(--blue-mid); }
.card.help      { border-left-color: var(--grey); }
.card.info      { border-left-color: var(--info); }

.card h2 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--blue-dark);
  margin-bottom: 0.65rem;
  line-height: 1.35;
}
.card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 1rem 0 0.4rem;
}
.card p {
  margin-bottom: 0.6rem;
}

/* ── CTA buttons ── */
.cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--teal);
  color: #fff;
  text-decoration: none;
  padding: 0.65rem 1.3rem;
  border-radius: 7px;
  font-weight: 600;
  font-size: 1rem;
  min-height: 44px;
  margin: 0.25rem 0 0.5rem;
  transition: background 0.15s;
}
.cta:hover, .cta:focus { background: var(--teal-dark); outline: none; }
.cta:focus-visible { outline: 3px solid var(--teal-dark); outline-offset: 2px; }
.card.secondary .cta { background: var(--blue-mid); }
.card.secondary .cta:hover,
.card.secondary .cta:focus { background: var(--blue-mid-drk); }
.card.secondary .cta:focus-visible { outline-color: var(--blue-mid-drk); }
.card.info .cta { background: var(--info); }
.card.info .cta:hover,
.card.info .cta:focus { background: var(--info-dark); }
.card.info .cta:focus-visible { outline-color: var(--info-dark); }

/* ── Card thumbnail image (info card) ── */
.card-thumb {
  float: right;
  width: 200px;
  height: auto;
  margin: 0 0 0.6rem 1rem;
  border-radius: 6px;
  box-shadow: 0 1px 4px rgba(0,53,88,0.15);
}
@media (max-width: 520px) {
  .card-thumb {
    float: none;
    display: block;
    width: 100%;
    max-width: 320px;
    margin: 0 auto 0.9rem;
  }
}

/* ── Lists ── */
.card ul {
  padding-left: 1.3rem;
  margin-top: 0.25rem;
}
.card ul li {
  margin-bottom: 0.3rem;
}

/* ── Inline links ── */
.card a:not(.cta) {
  color: var(--blue-mid);
}
.card a:not(.cta):hover {
  color: var(--blue-dark);
}

/* ── Help notes ── */
small.note {
  display: block;
  font-size: 0.85rem;
  color: #767676;
  margin-top: 0.1rem;
}

/* ── Footer ── */
footer {
  text-align: center;
  padding: 1.25rem 1rem;
  font-size: 0.85rem;
  color: #697079;
  border-top: 1px solid var(--border);
}

/* ── Dark mode ── */
@media (prefers-color-scheme: dark) {
  :root {
    --bg:           #1a1d23;
    --card-bg:      #23272f;
    --text:         #e1e4e8;
    --muted:        #9ca3af;
    --border:       #333a45;
    --blue-dark:    #7eb8da;
    --teal:         #00838f;
    --teal-dark:    #006d78;
    --blue-mid:     #2979b0;
    --blue-mid-drk: #1e6590;
    --grey:         #8899a6;
    --info:         #d99b3c;
    --info-dark:    #b8761a;
    --notice-bg:    #332b00;
    --notice-border:#f59e0b;
    --shadow:       0 2px 10px rgba(0,0,0,0.30);
  }
  header        { background: #0d1b2a; }
  header nav a  { color: #8cb4d0; }
  .card a:not(.cta)       { color: #5ab0e0; }
  .card a:not(.cta):hover { color: #7eb8da; }
  .notice       { color: #e0b44a; }
  small.note    { color: #9ca3af; }
  footer        { color: #9ca3af; }
}