@font-face { font-family: Vazirmatn; src: url(/fonts/Vazirmatn-Regular.ttf) format('truetype'); font-weight: 400; }
@font-face { font-family: Vazirmatn; src: url(/fonts/Vazirmatn-Bold.ttf) format('truetype'); font-weight: 700; }
:root { --bg: #0b0e13; --surface: #141920; --text: #e8ecf2; --muted: #8c96a5; --border: #29303b; --accent: #8b7cf6; --down: #f85149; color-scheme: dark; }
@media (prefers-color-scheme: light) {
  :root { --bg: #f4f5f7; --surface: #fff; --text: #161b22; --muted: #5d6673; --border: #d8dce2; --down: #d92d20; color-scheme: light; }
}
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: grid; place-items: center; padding: 16px; background: var(--bg); color: var(--text); font: 15px/1.7 Vazirmatn, system-ui, sans-serif; }
main { width: min(380px, 100%); background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 28px; text-align: center; }
h1 { margin: 12px 0 0; font-size: 22px; }
.hint { margin: 0 0 18px; color: var(--muted); font-size: 13px; }
form { display: grid; gap: 14px; text-align: right; }
label { display: grid; gap: 6px; font-size: 13px; color: var(--muted); }
input:not([type="checkbox"]) { font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; font-size: 16px; }
input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
input[name="code"] { letter-spacing: 6px; text-align: center; font-size: 22px; }
.remember { display: flex; align-items: center; gap: 8px; }
button { font: inherit; font-weight: 700; color: #fff; background: var(--accent); border: 0; border-radius: 10px; padding: 11px; cursor: pointer; }
.error { color: var(--down); font-size: 13px; margin: 0 0 12px; }