/* iOS-style shell shared by login, passkeys and the player. */
:root {
  color-scheme: light dark;
  --bg: #f2f2f7; --surface: #ffffff; --surface2: #e9e9ee; --fg: #000000;
  --fg2: rgba(60,60,67,.78); --fg3: rgba(60,60,67,.76); --sep: rgba(60,60,67,.18);
  --accent: #0062d6; --on-accent: #ffffff; --danger: #ff3b30; --ok: #248a3d;
  --radius: 14px; --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", system-ui, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000; --surface: #1c1c1e; --surface2: #2c2c2e; --fg: #ffffff;
    --fg2: rgba(235,235,245,.6); --fg3: rgba(235,235,245,.5); --sep: rgba(84,84,88,.6);
    --accent: #0a84ff; --danger: #ff453a; --ok: #32d74b;
  }
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.35 var(--font);
  -webkit-font-smoothing: antialiased; text-size-adjust: 100%; }
a { color: var(--accent); text-decoration: none; }
h1 { font-size: 34px; line-height: 1.1; font-weight: 700; letter-spacing: -.02em; margin: 0; }
.wrap { max-width: 480px; margin: 0 auto; padding: max(20px, env(safe-area-inset-top)) 16px max(32px, env(safe-area-inset-bottom)); }
.center { min-height: 100dvh; display: flex; flex-direction: column; justify-content: center; }
.sub { color: var(--fg2); font-size: 15px; margin-top: 6px; }
.group { background: var(--surface); border-radius: var(--radius); overflow: hidden; }
.row { display: flex; align-items: center; gap: 12px; padding: 12px 16px; min-height: 48px; }
.row + .row { border-top: .5px solid var(--sep); }
.row .grow { flex: 1; min-width: 0; }
.row .small { color: var(--fg2); font-size: .82rem; }
input[type=text], input[type=email], input[type=number] {
  width: 100%; border: 0; background: transparent; color: var(--fg); font: inherit; padding: 14px 16px; outline: none; }
input::placeholder { color: var(--fg2); }
.lbl { display: block; margin: 0 0 6px; font-size: .82rem; font-weight: 600; color: var(--fg2); }
.group.field { border: 1px solid var(--fg3); }
.group.field:focus-within { border-color: var(--accent); }
.btn { display: block; width: 100%; border: 0; border-radius: var(--radius); background: var(--accent);
  color: var(--on-accent); font: inherit; font-weight: 600; padding: 15px 16px; text-align: center; cursor: pointer;
  transition: opacity .15s, transform .1s; }
.btn:active { opacity: .7; transform: scale(.985); }
.btn:disabled { opacity: .4; cursor: default; }
.btn.plain { background: transparent; color: var(--accent); font-weight: 500; }
.btn.tinted { background: color-mix(in srgb, var(--accent) 14%, transparent); color: var(--accent); }
.link { background: none; border: 0; color: var(--accent); font: inherit; padding: 6px 0; cursor: pointer; }
.link.danger { color: var(--danger); }
.msg { min-height: 20px; margin-top: 12px; text-align: center; font-size: 14px; color: var(--fg2); }
.msg.bad { color: var(--danger); } .msg.good { color: var(--ok); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.mark { width: 56px; height: 56px; border-radius: 14px; margin-bottom: 28px; display: grid; place-items: center;
  background: linear-gradient(160deg, #3a3a3c, #0a0a0c); }
.mark i { display: block; width: 4px; border-radius: 2px; background: #fff; margin: 0 2px; }
.stack > * + * { margin-top: 12px; }
/* Small centered dialog (replaces confirm()/prompt()) */
dialog.modal { width: min(340px, calc(100vw - 32px)); border: 0; border-radius: 18px; padding: 20px 16px 12px;
  background: var(--surface); color: var(--fg); }
dialog.modal::backdrop { background: rgba(0,0,0,.45); }
dialog.modal h2 { margin: 0 0 6px; font-size: 18px; text-align: center; }
dialog.modal .sub { text-align: center; margin: 0 0 12px; }
dialog.modal .group.field { margin: 12px 0 4px; background: var(--surface2); }
.modal-acts { display: flex; gap: 8px; margin-top: 12px; }
.modal-acts .btn { flex: 1; padding: 12px; }
.modal-acts .btn.danger { background: var(--danger); }
dialog.modal [hidden] { display: none; }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }