:root {
  --paper: #F3F5F8;
  --sheet: #FFFFFF;
  --ink: #172036;
  --muted: #5B6679;
  --rule: #D6DDE7;
  --accent: #2F4DC4;
  --accent-soft: #E6EBFA;
  --margin: #C8453E;
  --error: #B3261E;
  --success: #1F7A4D;
  --success-soft: #E3F3EA;
  --warn: #8A5A00;
  --warn-soft: #FBF0D9;
  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans: "Figtree", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #11151F; --sheet: #181E2B; --ink: #E7EAF1; --muted: #9AA3B5; --rule: #2C3446;
    --accent: #8FA6FF; --accent-soft: #232C47; --margin: #D9665F; --error: #FF8A80;
    --success: #6FD3A0; --success-soft: #16301F; --warn: #F2C46B; --warn-soft: #33290F;
  }
}
:root[data-theme="dark"] {
  --paper: #11151F; --sheet: #181E2B; --ink: #E7EAF1; --muted: #9AA3B5; --rule: #2C3446;
  --accent: #8FA6FF; --accent-soft: #232C47; --margin: #D9665F; --error: #FF8A80;
  --success: #6FD3A0; --success-soft: #16301F; --warn: #F2C46B; --warn-soft: #33290F;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); line-height: 1.5; }
body::before {
  content: ""; position: fixed; top: 0; bottom: 0;
  left: clamp(1rem, 4vw, 3.5rem); width: 1px;
  background: var(--margin); opacity: .55; pointer-events: none;
}
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
img { max-width: 100%; }
[hidden] { display: none !important; }

.topnav {
  display: flex; gap: 1.75rem; align-items: center;
  padding: 1rem clamp(2rem, 7vw, 5.5rem);
  border-bottom: 1px solid var(--rule); background: var(--sheet);
  position: relative; z-index: 1;
}
.topnav a { color: var(--muted); text-decoration: none; font-weight: 500; padding: .35rem 0; border-bottom: 2px solid transparent; }
.topnav a:hover { color: var(--ink); }
.topnav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--accent); }

.wrap { max-width: 68rem; margin: 0 auto; padding: 2.5rem clamp(2rem, 7vw, 5.5rem) 4rem; }
h1 {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(2.25rem, 5.5vw, 3.25rem); line-height: 1.05;
  letter-spacing: -0.015em; margin: 0 0 1rem;
}
h2 { font-family: var(--serif); font-weight: 500; font-size: 1.375rem; margin: 0; }
.lede { color: var(--muted); font-size: 1.0625rem; margin: 0 0 2rem; max-width: 36rem; }

label.lbl { display: block; font-weight: 500; font-size: .9375rem; margin-bottom: .35rem; }
input[type="text"], input[type="password"], select, textarea {
  font: inherit; color: var(--ink); background: var(--sheet);
  border: 1px solid var(--rule); border-radius: 4px; padding: .6rem .75rem; width: 100%;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

button, .btn {
  font: inherit; font-weight: 600; cursor: pointer; border-radius: 4px;
  padding: .6rem 1.1rem; background: var(--accent); color: var(--sheet);
  border: 1px solid var(--accent); text-decoration: none; display: inline-block;
}
button:hover { filter: brightness(1.08); }
button.secondary { background: transparent; color: var(--ink); border-color: var(--rule); }
button.secondary:hover { border-color: var(--accent); filter: none; }
button.danger { background: transparent; color: var(--error); border-color: var(--rule); }
button.danger:hover { border-color: var(--error); filter: none; }
button:disabled { opacity: .6; cursor: progress; }

.inline-form { display: flex; gap: .5rem; max-width: 28rem; }
.inline-form input { flex: 1; min-width: 0; }
.msg { margin: .75rem 0 0; }
.msg.error { color: var(--error); }
.msg:empty { display: none; }

.badge {
  display: inline-block; font-size: .8125rem; font-weight: 600;
  padding: .15rem .55rem; border-radius: 999px; white-space: nowrap;
}
.badge.paid { background: var(--success-soft); color: var(--success); }
.badge.pending { background: var(--warn-soft); color: var(--warn); }
.badge.expired { background: var(--paper); color: var(--muted); border: 1px solid var(--rule); }
.badge.ship { background: var(--accent-soft); color: var(--accent); }

footer { margin-top: 4rem; color: var(--muted); font-size: .875rem; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}