:root {
  --bg: #0b0f14; --card: #121922; --line: #243142; --text: #e8eef5; --dim: #8ea0b4;
  --accent: #4cc2ff; --ok: #3ddc84; --warn: #ffb84c; --bad: #ff6b6b;
}
body.night { --bg: #070000; --card: #120404; --line: #3a0e0e; --text: #ff5c4a; --dim: #b03a30; --accent: #ff5c4a; --ok: #ff5c4a; --warn: #ff5c4a; --bad: #ff5c4a; }
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); }
body { font: 16px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; -webkit-text-size-adjust: 100%; padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left); }
main { max-width: 560px; margin: 0 auto; padding: 14px 16px 40px; display: grid; gap: 12px; }
header { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
h1 { margin: 0; font-size: 20px; letter-spacing: .08em; }
h1 span { color: var(--accent); }
h2 { margin: 0 0 10px; font-size: 13px; text-transform: uppercase; letter-spacing: .09em; color: var(--dim); font-weight: 600; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 14px; }
.hidden { display: none; }
.label { display: flex; justify-content: space-between; color: var(--dim); font-size: 13px; }
.ao { font-weight: 700; }
.ao.in { color: var(--ok); } .ao.out { color: var(--warn); }
.readout { font: 700 clamp(26px, 8.4vw, 42px)/1.15 ui-monospace, "SF Mono", Menlo, Consolas, monospace; margin: 10px 0 4px; word-break: break-word; letter-spacing: .02em; }
.detail { color: var(--dim); font: 13px/1.5 ui-monospace, Menlo, Consolas, monospace; min-height: 40px; }
.seg { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: 6px; margin: 12px 0; }
button, input { font: inherit; color: var(--text); background: #0d141c; border: 1px solid var(--line); border-radius: 10px; padding: 12px 10px; min-height: 46px; }
body.night button, body.night input { background: #0d0202; }
button { cursor: pointer; }
button:active { transform: translateY(1px); }
button.on { border-color: var(--accent); color: var(--accent); font-weight: 700; }
button.primary { background: var(--accent); border-color: var(--accent); color: #04121b; font-weight: 700; }
body.night button.primary { color: #070000; }
.row { display: flex; gap: 8px; } .row > * { flex: 1; } .row > input { flex: 3; min-width: 0; }
.row.wrap { flex-wrap: wrap; } .row.wrap > button { flex: 1 1 140px; }
input { width: 100%; font-family: ui-monospace, Menlo, Consolas, monospace; text-transform: uppercase; }
input::placeholder { text-transform: none; color: var(--dim); }
.msg { margin: 8px 0 0; color: var(--dim); font-size: 14px; } .msg.err { color: var(--bad); } .msg.small { font-size: 12.5px; }
.sheet-id { margin: 10px 0; font: 700 20px ui-monospace, Menlo, Consolas, monospace; }
.badge { min-height: 36px; padding: 6px 12px; border-radius: 999px; font-size: 13px; border-color: var(--line); color: var(--dim); }
.badge.ok { color: var(--ok); border-color: var(--ok); } .badge.warn { color: var(--warn); border-color: var(--warn); }
a.pdf-link { color: var(--accent); font-weight: 700; }
footer { display: flex; justify-content: space-between; align-items: center; color: var(--dim); font-size: 12px; }
footer button { min-height: 38px; padding: 6px 12px; font-size: 13px; }