:root {
  --bg: #f6f3ef;
  --card: #fffdfa;
  --text: #25232a;
  --muted: #77727c;
  --border: #e9e3db;
  --accent: #5457cf;
  --accent-soft: #e9e8f8;
  --ok: #2f8a57;
  --ok-soft: #e3f3e8;
  --warn: #a76a12;
  --warn-soft: #fbf0dc;
  --bad: #c2413b;
  --bad-soft: #fbe6e4;
  --shadow: 0 1px 2px rgba(40, 30, 20, 0.05), 0 6px 20px rgba(40, 30, 20, 0.05);
  --radius: 14px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #181716;
    --card: #211f1e;
    --text: #eeeae6;
    --muted: #a19b96;
    --border: #34312e;
    --accent: #8d90f2;
    --accent-soft: #2c2c46;
    --ok: #6cc890;
    --ok-soft: #1f3327;
    --warn: #e2b060;
    --warn-soft: #3a2f1c;
    --bad: #f08a83;
    --bad-soft: #3d2322;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}
.hidden { display: none !important; }
.muted { color: var(--muted); }
h1, h2, h3 { font-family: Georgia, "Times New Roman", serif; font-weight: 600; margin: 0; letter-spacing: -0.01em; }
h1 { font-size: 28px; }
h2 { font-size: 24px; }
h3 { font-size: 19px; }
code, .code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; }

button, input, select, textarea { font: inherit; color: inherit; }
input, select, textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card);
  margin-top: 4px;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
label { display: block; font-size: 13px; color: var(--muted); font-weight: 500; }
label.check { display: flex; align-items: center; gap: 8px; color: var(--text); white-space: nowrap; }
label.check input { width: auto; margin: 0; }

.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card);
  cursor: pointer;
  font-weight: 500;
  white-space: nowrap;
}
.btn:hover { border-color: var(--muted); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { filter: brightness(1.05); border-color: var(--accent); }
.btn-ghost { background: transparent; border-color: transparent; }
.btn-danger { color: var(--bad); }
.btn-sm { padding: 5px 11px; font-size: 13px; }

/* login */
.login { min-height: 100vh; display: grid; place-items: center; padding: 16px;
  background: radial-gradient(circle at 20% 10%, var(--accent-soft), transparent 45%), var(--bg); }
.login-card { width: 100%; max-width: 380px; background: var(--card); border-radius: 20px; padding: 32px;
  box-shadow: var(--shadow); border: 1px solid var(--border); display: grid; gap: 14px; }
.brand-mark { width: 44px; height: 44px; border-radius: 13px; background: var(--accent); color: #fff;
  display: grid; place-items: center; font-weight: 700; font-size: 20px; font-family: Georgia, serif; }
.brand-mark.small { width: 28px; height: 28px; border-radius: 9px; font-size: 14px; display: inline-grid; }
.error { color: var(--bad); font-size: 14px; }

/* layout */
.topbar { display: flex; align-items: center; gap: 18px; padding: 12px 24px; background: var(--card);
  border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 5; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; }
.tabs { display: flex; gap: 4px; flex: 1; flex-wrap: wrap; }
.tab { border: 0; background: transparent; padding: 7px 13px; border-radius: 999px; cursor: pointer; color: var(--muted); font-weight: 500; }
.tab.active { background: var(--accent-soft); color: var(--accent); }
main { max-width: 1080px; margin: 0 auto; padding: 28px 24px 60px; }
.panel { display: grid; gap: 18px; }
.panel-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; flex-wrap: wrap; }
.panel-head p { margin: 4px 0 0; max-width: 640px; }

.cards { display: grid; gap: 12px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 18px; box-shadow: var(--shadow); }
.empty { text-align: center; padding: 36px; color: var(--muted); }

.system-top { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.system-name { font-weight: 600; font-size: 17px; }
.system-meta { display: flex; flex-wrap: wrap; gap: 6px 18px; margin-top: 8px; color: var(--muted); font-size: 13.5px; }
.system-meta b { color: var(--text); font-weight: 500; }
.system-actions { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 12px; }
.alert { margin-top: 10px; padding: 8px 12px; border-radius: 10px; font-size: 13.5px; }
.alert.warn { background: var(--warn-soft); color: var(--warn); }
.alert.bad { background: var(--bad-soft); color: var(--bad); }

.pill { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12.5px; font-weight: 600; }
.pill.ok { background: var(--ok-soft); color: var(--ok); }
.pill.warn { background: var(--warn-soft); color: var(--warn); }
.pill.bad { background: var(--bad-soft); color: var(--bad); }
.pill.neutral { background: var(--accent-soft); color: var(--accent); }

.upload .row { display: flex; gap: 12px; align-items: flex-end; flex-wrap: wrap; margin-bottom: 10px; }
.upload .grow { flex: 1; min-width: 220px; }
.release { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.release .grow { flex: 1; min-width: 200px; }

pre.code { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 14px; overflow-x: auto; margin: 0; }

.unknown summary { cursor: pointer; color: var(--muted); }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 500; }

/* modal */
.modal { position: fixed; inset: 0; background: rgba(20, 16, 12, 0.35); backdrop-filter: blur(3px);
  display: grid; place-items: center; padding: 16px; z-index: 20; }
.modal-card { background: var(--card); border-radius: 18px; width: 100%; max-width: 560px; max-height: 90vh; overflow: auto;
  padding: 22px 24px; border: 1px solid var(--border); box-shadow: var(--shadow); }
.modal-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.form { display: grid; gap: 12px; }
.form .two { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 6px; }
.keybox { font-family: ui-monospace, Menlo, monospace; font-size: 14px; word-break: break-all; padding: 14px;
  background: var(--accent-soft); border-radius: 12px; margin: 10px 0; user-select: all; }

.toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: var(--text); color: var(--bg);
  padding: 10px 18px; border-radius: 999px; z-index: 30; font-size: 14px; }

@media (max-width: 640px) {
  .topbar { padding: 10px 16px; }
  main { padding: 20px 16px 48px; }
  .form .two { grid-template-columns: 1fr; }
}
.system-notes { margin-top: 6px; font-size: 14px; }
.alert.ok { background: var(--ok-soft); color: var(--ok); }
.linklike { border: 0; background: none; color: inherit; text-decoration: underline; cursor: pointer; padding: 0; font: inherit; }
.install-facts { display: grid; gap: 6px; font-size: 14px; padding: 12px 14px; background: var(--bg); border-radius: 12px; }
.logbox { max-height: 60vh; white-space: pre-wrap; font-size: 12.5px; }
progress { width: 100%; height: 8px; accent-color: var(--accent); }
.btn[disabled] { opacity: 0.5; cursor: not-allowed; }
.brand-thumb { width: 28px; height: 28px; border-radius: 8px; object-fit: contain; background: var(--bg); }
.brand-preview { display: flex; gap: 14px; align-items: center; padding: 12px; border-radius: 14px; background: var(--bg); }
.brand-preview img, .brand-letter { width: 64px; height: 64px; border-radius: 16px; object-fit: contain; flex-shrink: 0; background: var(--card); }
.brand-letter { display: grid; place-items: center; background: var(--accent); color: #fff; font: 700 28px Georgia, serif; }
.brand-preview-actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.brand-preview-actions .small { width: 100%; font-size: 12.5px; }
.color-row { display: flex; gap: 8px; align-items: center; }
.color-row input[type=color] { width: 48px; height: 40px; padding: 2px; flex-shrink: 0; }