:root {
  --bg: #0b0f14; --panel: #111821; --panel2: #151e29; --panel3: #1a2531;
  --border: #263342; --border-hover: #3a4d63;
  --text: #f5f7fa; --muted: #8e9aaa; --accent: #5b8cff; --accent-hover: #76a0ff;
  --good: #42d392; --warning: #f5b94c; --danger: #f06a6a;
  --radius: 10px;
  color-scheme: dark;
  font: 14px/1.45 "Segoe UI", system-ui, -apple-system, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 24px; font-weight: 600; margin: 0 0 4px; }
h2 { font-size: 13px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); margin: 26px 0 10px; }
p.sub { color: var(--muted); margin: 0 0 22px; font-size: 13px; }
code, .mono { font-family: Consolas, "Cascadia Mono", monospace; }
[hidden] { display: none !important; }

#app { display: grid; grid-template-columns: 232px 1fr; min-height: 100vh; }
#sidebar { background: var(--panel); border-right: 1px solid var(--border); padding: 18px 14px; display: flex; flex-direction: column; gap: 18px; position: sticky; top: 0; height: 100vh; }
.brand { display: flex; gap: 10px; align-items: center; }
.brand small { display: block; color: var(--muted); font-size: 11px; }
.mark { width: 36px; height: 36px; border-radius: 9px; background: var(--accent); color: #fff; font-weight: 700; font-size: 18px; display: grid; place-items: center; flex: none; }
#nav { display: flex; flex-direction: column; gap: 2px; }
#nav a { color: var(--muted); padding: 9px 12px; border-radius: 8px; font-size: 13px; }
#nav a:hover { background: var(--panel2); color: var(--text); text-decoration: none; }
#nav a.active { background: var(--panel3); color: var(--text); font-weight: 600; }
.session { margin-top: auto; font-size: 12px; color: var(--muted); display: flex; justify-content: space-between; gap: 8px; }
#main { padding: 28px 34px 60px; max-width: 1280px; outline: none; }

.card { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 18px 20px; }
.grid { display: grid; gap: 14px; }
.cols-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.cols-3 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }
.muted { color: var(--muted); }
.small { font-size: 12px; }

.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; margin-bottom: 8px; }
.tile { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; }
.tile .n { font-size: 26px; font-weight: 600; }
.tile .l { color: var(--muted); font-size: 11px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }

table { width: 100%; border-collapse: collapse; background: var(--panel); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 13px; vertical-align: middle; }
th { color: var(--muted); font-size: 11px; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; background: var(--panel2); }
tr:last-child td { border-bottom: none; }
tr.click { cursor: pointer; }
tr.click:hover td { background: var(--panel2); }
td.empty { color: var(--muted); text-align: center; padding: 28px; }

label { display: flex; flex-direction: column; gap: 5px; font-size: 12px; color: var(--muted); font-weight: 600; }
label.check { flex-direction: row; align-items: center; gap: 8px; color: var(--text); font-weight: 400; font-size: 13px; }
input, select, textarea { background: var(--panel2); border: 1px solid var(--border); color: var(--text); border-radius: 8px; padding: 8px 10px; font: inherit; font-size: 13px; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); }
input:disabled { opacity: .6; }
textarea { min-height: 84px; resize: vertical; }
input[type=color] { padding: 2px; width: 44px; height: 34px; }
input[type=checkbox] { width: 16px; height: 16px; accent-color: var(--accent); }

button { font: inherit; font-size: 13px; font-weight: 600; border-radius: 8px; padding: 8px 14px; cursor: pointer; border: 1px solid var(--border); background: #202b38; color: var(--text); }
button:hover { border-color: var(--border-hover); }
button:disabled { opacity: .45; cursor: default; }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.primary:hover { background: var(--accent-hover); }
button.danger { color: var(--danger); }
button.link { background: none; border: none; padding: 0; color: var(--accent); font-weight: 400; }

.badge { display: inline-block; font-size: 11px; font-weight: 600; padding: 2px 8px; border-radius: 10px; background: var(--panel3); color: var(--muted); margin-right: 4px; }
.badge.good { color: var(--good); background: rgba(66, 211, 146, .12); }
.badge.warn { color: var(--warning); background: rgba(245, 185, 76, .12); }
.badge.bad { color: var(--danger); background: rgba(240, 106, 106, .12); }
.error { color: var(--danger); font-size: 13px; }

.color-field { display: flex; gap: 6px; align-items: center; }
.color-field input[type=text] { width: 100px; font-family: Consolas, monospace; }

.upload { display: flex; flex-direction: column; gap: 6px; padding: 12px; border: 1px dashed var(--border); border-radius: var(--radius); background: var(--panel2); }
.upload .current { font-size: 12px; color: var(--muted); word-break: break-all; }
.upload .progress { height: 4px; background: var(--panel3); border-radius: 2px; overflow: hidden; }
.upload .progress > div { height: 100%; width: 0; background: var(--accent); transition: width .2s; }
.upload img { max-width: 240px; max-height: 110px; object-fit: contain; border-radius: 6px; background: var(--panel3); }

.preview-header { display: flex; align-items: center; gap: 12px; padding: 14px 16px; border-radius: 12px; border: 1px solid var(--border); }
.preview-header .logo-box { height: 42px; display: flex; align-items: center; border-radius: 9px; }
.preview-header .logo-box img { max-height: 42px; max-width: 190px; object-fit: contain; }
.preview-header .logo-box.plate { padding: 6px 10px; }
.preview-header .initials { width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center; font-weight: 700; color: #fff; }
.preview-header .pbtn { margin-left: auto; padding: 7px 12px; border-radius: 8px; color: #fff; font-weight: 600; font-size: 12px; }

.key-box { font-family: Consolas, monospace; font-size: 20px; letter-spacing: .04em; padding: 12px 16px; background: var(--panel2); border: 1px solid var(--accent); border-radius: 10px; }
.assign-list { max-height: 360px; overflow: auto; border: 1px solid var(--border); border-radius: var(--radius); }
.assign-list .item { display: grid; grid-template-columns: 24px 1fr 200px; gap: 10px; align-items: center; padding: 7px 12px; border-bottom: 1px solid var(--border); }
.assign-list .item:last-child { border-bottom: none; }
.actions { display: flex; gap: 10px; margin-top: 24px; }

#login { position: fixed; inset: 0; background: var(--bg); display: grid; place-items: center; z-index: 10; }
.login-card { width: 360px; display: flex; flex-direction: column; gap: 14px; }

#toasts { position: fixed; right: 20px; bottom: 20px; display: flex; flex-direction: column; gap: 8px; z-index: 20; }
.toast { background: var(--panel3); border: 1px solid var(--border); border-left: 4px solid var(--good); padding: 10px 14px; border-radius: 8px; max-width: 420px; font-size: 13px; }
.toast.error { border-left-color: var(--danger); }

/* Usage page */
.filters { display: flex; gap: 10px; align-items: end; flex-wrap: wrap; margin-bottom: 18px; }
.tile .hint { color: var(--muted); font-size: 12px; margin-top: 2px; }
.chart { position: relative; background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px 8px; }
.chart svg { display: block; width: 100%; height: auto; }
.chart .grid { stroke: var(--border); stroke-width: 1; }
.chart .axis-label { fill: var(--muted); font-size: 11px; }
.chart .bar { fill: var(--accent); pointer-events: none; }  /* the larger .hit area behind it takes hover and focus */
.chart .hit { fill: transparent; cursor: default; outline: none; }
.chart .hit:hover + .bar, .chart .hit:focus + .bar { fill: var(--accent-hover); }
.chart .hit:focus-visible { stroke: var(--accent-hover); stroke-width: 1; }
.chart-tip { position: absolute; pointer-events: none; background: var(--panel3); border: 1px solid var(--border-hover); border-radius: 8px; padding: 7px 10px; font-size: 12px; white-space: nowrap; transform: translate(-50%, -100%); }
.chart-tip strong { display: block; font-size: 14px; }
.chart-tip span { color: var(--muted); }
.chart-empty { color: var(--muted); text-align: center; padding: 50px 0; }
.save-note { color: var(--warning); font-size: 12px; align-self: center; }