:root {
  color-scheme: light dark;
  --bg: #f4f2ec;
  --surface: #ffffff;
  --text: #1b1b1a;
  --muted: #5f5d57;
  --line: #dcd8cd;
  --accent: #1b5e20;
  --accent-text: #ffffff;
  --error: #b3261e;
  --focus: #2e7d32;
  --radius: 12px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141513;
    --surface: #1f201d;
    --text: #ecebe6;
    --muted: #a9a79f;
    --line: #363731;
    --accent: #74c178;
    --accent-text: #0c1d0d;
    --error: #ff8a80;
    --focus: #8fd694;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.45 var(--sans);
}

.top, main {
  max-width: 640px;
  margin-inline: auto;
  padding-inline: max(16px, env(safe-area-inset-left)) max(16px, env(safe-area-inset-right));
}

.top { padding-top: max(14px, env(safe-area-inset-top)); }
.top-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 32px; }
.brand { margin: 0; color: var(--muted); font-size: .8rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; }
.account { display: flex; align-items: center; gap: 4px; min-width: 0; color: var(--muted); font-size: .9rem; }
.account span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

button.link {
  min-height: 40px;
  padding: 0 8px;
  border: 0;
  background: none;
  color: var(--text);
  font: 600 .9rem var(--sans);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Sign-in form */
.signin input[type="text"], .signin input[type="password"] {
  width: 100%;
  padding: 12px 14px;
  border: 2px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font: 1.1rem var(--sans);
}
.signin input:focus { outline: none; border-color: var(--focus); }
.signin label.check { display: flex; align-items: center; gap: 8px; margin: 12px 0 0; color: var(--text); font-weight: 400; }
.signin label.check input { width: 20px; height: 20px; margin: 0; accent-color: var(--accent); }
.hint { margin: 14px 2px 0; color: var(--muted); font-size: .9rem; }

button.primary.wide {
  width: 100%;
  min-height: 50px;
  border: 0;
  border-radius: 10px;
  background: var(--accent);
  color: var(--accent-text);
  font: 600 1.05rem var(--sans);
}
button.primary.wide:disabled { opacity: .6; }
h1 { margin: 0 0 6px; font-size: 1.5rem; line-height: 1.2; }

main { padding-bottom: calc(32px + env(safe-area-inset-bottom)); }

label { display: block; margin: 10px 0 6px; color: var(--muted); font-size: .9rem; font-weight: 600; }

.field { position: relative; }

#serial {
  width: 100%;
  padding: 13px 54px 13px 14px;
  border: 2px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font: 700 1.5rem/1.2 var(--mono);
  letter-spacing: .08em;
  text-transform: uppercase;
}
#serial::placeholder { color: var(--muted); opacity: .45; }
#serial:focus { outline: none; border-color: var(--focus); }

#clear {
  position: absolute;
  top: 50%;
  right: 6px;
  width: 44px;
  height: 44px;
  transform: translateY(-50%);
  border: 0;
  border-radius: 50%;
  background: none;
  color: var(--muted);
  font-size: 1.7rem;
  line-height: 1;
}

.status { min-height: 1.45em; margin: 8px 2px 14px; color: var(--muted); font-size: .95rem; }
.status[data-kind="error"] { color: var(--error); }

.overlay svg { display: block; width: 100%; height: auto; border-radius: 8px; }

.matches { display: flex; flex-direction: column; gap: 10px; }

.match {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.match summary {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 58px;
  padding: 10px 46px 10px 14px;
  border-radius: var(--radius);
  cursor: pointer;
  list-style: none;
}
.match summary::-webkit-details-marker { display: none; }
.match summary::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 20px;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--muted);
  border-bottom: 2px solid var(--muted);
  transform: translateY(-70%) rotate(45deg);
  transition: transform .15s;
}
.match[open] summary::after { transform: translateY(-25%) rotate(225deg); }

.match-name { font-size: 1.05rem; font-weight: 650; overflow-wrap: anywhere; }
.match-meta { color: var(--muted); font-size: .85rem; }
.match-meta:empty { display: none; }

.match-body { padding: 0 14px 14px; }
.match-message { margin: 0 0 10px; }

.actions { display: flex; gap: 10px; margin: 12px 0; }
.actions button {
  flex: 1;
  min-height: 48px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg);
  color: var(--text);
  font: 600 1rem var(--sans);
}
.actions button.primary { border-color: transparent; background: var(--accent); color: var(--accent-text); }
.actions button:disabled { opacity: .6; }

.facts { display: grid; grid-template-columns: auto 1fr; gap: 3px 14px; margin: 0; font-size: .92rem; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; overflow-wrap: anywhere; }

.desc { margin: 10px 0 0; color: var(--muted); font-size: .9rem; }

button, summary { -webkit-tap-highlight-color: transparent; }
button:focus-visible, summary:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
button:active { transform: translateY(1px); }

@media (hover: hover) {
  .match summary:hover { background: var(--bg); }
  .actions button:hover { filter: brightness(.96); }
}