:root { color-scheme: dark; font-family: system-ui, sans-serif; background: #111827; color: #f9fafb; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: radial-gradient(circle at top, #243b53, #111827 55%); }
.shell { width: min(960px, calc(100% - 32px)); margin: 0 auto; padding: 42px 0; }
h1, h2 { margin-top: 0; }
.muted { color: #a9b7c6; }
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 16px; }
.card { background: rgba(17, 24, 39, .9); border: 1px solid #42536b; border-radius: 12px; padding: 20px; box-shadow: 0 14px 30px rgba(0,0,0,.2); }
label { display: block; margin: 12px 0; color: #cbd5e1; }
input, button, textarea { width: 100%; margin-top: 6px; border-radius: 7px; border: 1px solid #64748b; padding: 10px 12px; font: inherit; }
input, textarea { background: #0f172a; color: #fff; }
button { cursor: pointer; background: #2dd4bf; color: #06201d; font-weight: 700; border: 0; }
button.secondary { background: #334155; color: #f8fafc; margin-top: 10px; }
.notice { min-height: 26px; margin: 15px 0; color: #99f6e4; }
.notice.error { color: #fca5a5; }
.hidden { display: none; }
pre { white-space: pre-wrap; overflow-wrap: anywhere; background: #0b1220; padding: 12px; border-radius: 8px; }
.admin-account { border-top: 1px solid #42536b; padding: 14px 0; }
.admin-account h3 { margin: 0; overflow-wrap: anywhere; }
.admin-account p { color: #cbd5e1; overflow-wrap: anywhere; }
.admin-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.admin-actions button { width: auto; margin-top: 0; }
.account-detail { margin-bottom: 0; }
footer { margin-top: 25px; } a { color: #99f6e4; }