:root { --brand: #5b5cf0; --ink: #1d2540; --muted: #5a6385; --bg: #f1f5ff; --card: #fff; --line: #dfe5f5; --bad: #c0392b; }
@media (prefers-color-scheme: dark) { :root { --ink: #eef1ff; --muted: #aab2d5; --bg: #12172b; --card: #1b2240; --line: #2c3560; } }
* { box-sizing: border-box; } html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.5 system-ui, "Segoe UI", Arial, sans-serif; }
main { max-width: 520px; margin: 0 auto; padding: 20px 16px 48px; }
h1 { font-size: 1.5rem; margin: .4em 0 .2em; } h2 { font-size: 1.15rem; margin: 1em 0 .3em; }
.card { background: var(--card); border-radius: 18px; padding: 18px 18px 20px; box-shadow: 0 6px 24px #1d254014; margin: 14px 0; }
.muted { color: var(--muted); } .fine { color: var(--muted); font-size: .85rem; }
.tabs { display: flex; gap: 6px; flex-wrap: wrap; margin: 10px 0 4px; }
.tabs button { flex: 1 1 auto; border: 2px solid var(--line); background: var(--card); color: var(--ink); border-radius: 12px; padding: .55em .8em; font: inherit; font-weight: 700; cursor: pointer; }
.tabs button.on { background: var(--brand); border-color: var(--brand); color: #fff; }
label { display: block; font-weight: 700; margin: .8em 0 .25em; }
input[type=text], input[type=email], input[type=password] { width: 100%; font: inherit; padding: .6em .7em; border: 2px solid var(--line); border-radius: 12px; background: var(--card); color: var(--ink); }
input:focus-visible, button:focus-visible { outline: 3px solid var(--brand); outline-offset: 2px; }
.btn { display: inline-block; background: var(--brand); color: #fff; border: 0; border-radius: 12px; padding: .7em 1.3em; font: inherit; font-weight: 800; cursor: pointer; box-shadow: 0 4px 0 #3b3cb8; margin-top: .9em; }
.btn.ghost { background: transparent; color: var(--brand); box-shadow: none; border: 2px solid var(--line); }
.btn:disabled { opacity: .5; cursor: default; }
.pick { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 10px; margin: 10px 0; }
.pick button { background: var(--card); color: var(--ink); border: 2px solid var(--line); border-radius: 14px; padding: .8em .5em; font: inherit; font-weight: 800; cursor: pointer; }
.err { color: var(--bad); font-weight: 700; min-height: 1.4em; margin: .5em 0 0; }
.pin { letter-spacing: .4em; text-align: center; font-size: 1.5rem; max-width: 9em; }
.hide { display: none !important; }

a { color: var(--brand); font-weight: 700; }
.gap { margin-top: 1.2em; }