* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, "Segoe UI", Roboto, sans-serif; background: #f3f4f6;
       color: #1f2937; }
body.centered { display: flex; min-height: 100vh; align-items: center; justify-content: center; }

.topbar { display: flex; align-items: center; gap: 1rem; padding: .7rem 1.2rem; background: #111827;
          color: #fff; }
.topbar .brand { font-weight: 700; }
.topbar nav a { color: #cbd5e1; text-decoration: none; margin-right: 1rem; }
.topbar nav a:hover { color: #fff; }
.topbar .spacer { flex: 1; }
.topbar .who { color: #9ca3af; font-size: .85rem; }
.inline { display: inline; margin: 0; }
button.link { background: none; border: none; color: #93c5fd; cursor: pointer; }

main { max-width: 720px; margin: 1.5rem auto; padding: 0 1rem; }
.card { background: #fff; border-radius: 10px; padding: 1.5rem; box-shadow: 0 1px 3px rgba(0,0,0,.1); }
.card.login { width: 320px; }
h1 { margin-top: 0; font-size: 1.4rem; }
h2 { font-size: 1rem; margin: 1.4rem 0 .5rem; color: #374151; border-top: 1px solid #e5e7eb;
     padding-top: 1rem; }
label { display: block; margin: .6rem 0; font-size: .9rem; color: #374151; }
input, textarea { width: 100%; padding: .5rem .6rem; margin-top: .25rem; border: 1px solid #d1d5db;
                  border-radius: 6px; font-size: .95rem; font-family: inherit; }
textarea { font-family: ui-monospace, monospace; font-size: .8rem; }
button.primary { margin-top: 1rem; background: #2563eb; color: #fff; border: none; padding: .6rem 1.2rem;
                 border-radius: 6px; font-size: .95rem; cursor: pointer; }
button.primary:hover { background: #1d4ed8; }
.hint { font-size: .82rem; color: #6b7280; }
.badge { font-size: .7rem; background: #fef3c7; color: #92400e; padding: .1rem .4rem; border-radius: 4px;
         vertical-align: middle; }
.ok { background: #d1fae5; color: #065f46; padding: .5rem .8rem; border-radius: 6px; margin-bottom: 1rem; }
.err { background: #fee2e2; color: #991b1b; padding: .5rem .8rem; border-radius: 6px; margin-bottom: 1rem; }

.status { font-size: 1.05rem; margin: 1rem 0; }
.dot { display: inline-block; width: .8rem; height: .8rem; border-radius: 50%; margin-right: .4rem; }
.dot.green { background: #10b981; } .dot.red { background: #ef4444; }
.dot.amber { background: #f59e0b; } .dot.gray { background: #9ca3af; }
table.kv { font-size: .88rem; border-collapse: collapse; }
table.kv td { padding: .25rem .8rem .25rem 0; color: #374151; }
table.kv td:first-child { color: #6b7280; }

table.board { width: 100%; border-collapse: collapse; font-size: .9rem; margin-top: .5rem; }
table.board th, table.board td { text-align: left; padding: .4rem .6rem; border-bottom: 1px solid #eef0f3; }
table.board th { color: #6b7280; font-weight: 600; font-size: .8rem; }
table.board td.price { font-weight: 600; white-space: nowrap; }
table.board td.ts, .diff { color: #6b7280; font-size: .82rem; }
ul.events { list-style: none; padding: 0; margin: .5rem 0 0; font-size: .88rem; }
ul.events li { padding: .35rem 0; border-bottom: 1px solid #f1f2f4; }
ul.events .ts { color: #9ca3af; margin-right: .5rem; }
select { width: 100%; padding: .5rem .6rem; margin-top: .25rem; border: 1px solid #d1d5db;
         border-radius: 6px; font-size: .95rem; background: #fff; }
ul.deals { list-style: none; padding: 0; margin: .5rem 0 0; }
ul.deals li { padding: .5rem 0; border-bottom: 1px solid #f1f2f4; font-size: .9rem; }
ul.deals .ts { color: #9ca3af; margin-right: .5rem; }
pre.deal { background: #fff7ed; border: 1px solid #fed7aa; border-radius: 6px; padding: .5rem .7rem;
           margin: .4rem 0 0; font-size: .82rem; white-space: pre-wrap; font-family: ui-monospace, monospace; }