/* Niche Scanner — stile condiviso (login + app). Chiaro/scuro automatico. */
:root {
  color-scheme: light;
  --bg: #f6f6f4;
  --surface-1: #fcfcfb;
  --surface-2: #f0efec;
  --border: #e2e1dc;
  --text-primary: #0b0b0b;
  --text-secondary: #52514e;
  --text-muted: #7a7974;
  --accent: #2a78d6;
  --accent-ink: #ffffff;
  --accent-soft: #e3eefb;
  --good: #0ca30c;
  --good-ink: #006300;
  --warning: #fab219;
  --critical: #d03b3b;
  --critical-soft: #fbe9e9;
  --grid: #ebeae6;
  --series-1: #2a78d6; --series-2: #eb6834; --series-3: #1baf7a; --series-4: #eda100;
  --series-5: #e87ba4; --series-6: #008300; --series-7: #6250d6; --series-8: #e34948;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(0,0,0,.05), 0 2px 8px rgba(0,0,0,.04);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:where(:not([data-theme="light"])) {
    color-scheme: dark;
    --bg: #121211; --surface-1: #1a1a19; --surface-2: #242422; --border: #33332f;
    --text-primary: #f0efec; --text-secondary: #c3c2b7; --text-muted: #8f8e86;
    --accent: #3987e5; --accent-ink: #ffffff; --accent-soft: #1d2b3d;
    --good-ink: #4cc64c; --critical-soft: #3a1f1f; --grid: #2a2a27;
    --series-1: #3987e5; --series-2: #d95926; --series-3: #199e70; --series-4: #c98500;
    --series-5: #d55181; --series-6: #008300; --series-7: #9085e9; --series-8: #e66767;
    --shadow: 0 1px 2px rgba(0,0,0,.4);
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #121211; --surface-1: #1a1a19; --surface-2: #242422; --border: #33332f;
  --text-primary: #f0efec; --text-secondary: #c3c2b7; --text-muted: #8f8e86;
  --accent: #3987e5; --accent-ink: #ffffff; --accent-soft: #1d2b3d;
  --good-ink: #4cc64c; --critical-soft: #3a1f1f; --grid: #2a2a27;
  --series-1: #3987e5; --series-2: #d95926; --series-3: #199e70; --series-4: #c98500;
  --series-5: #d55181; --series-6: #008300; --series-7: #9085e9; --series-8: #e66767;
  --shadow: 0 1px 2px rgba(0,0,0,.4);
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--text-primary); font: 15px/1.5 var(--font); -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { line-height: 1.25; margin: 0 0 .5em; }
h1 { font-size: 1.5rem; }
h2 { font-size: 1.15rem; }
h3 { font-size: 1rem; }
.muted { color: var(--text-muted); }
.small { font-size: .85rem; }
.num { font-variant-numeric: tabular-nums; text-align: right; white-space: nowrap; }
[hidden] { display: none !important; }

/* ---------- controlli ---------- */
button, .btn {
  font: inherit; cursor: pointer; border: 1px solid var(--border); background: var(--surface-1); color: var(--text-primary);
  padding: .5rem .9rem; border-radius: 8px; display: inline-flex; align-items: center; gap: .4rem; min-height: 38px;
}
button:hover { background: var(--surface-2); }
button.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; }
button.primary:hover { filter: brightness(1.07); }
button.danger { color: var(--critical); border-color: var(--critical); background: transparent; }
button.ghost { border-color: transparent; background: transparent; }
button:disabled { opacity: .55; cursor: not-allowed; }
button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, a:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px;
}
input, select, textarea {
  font: inherit; color: var(--text-primary); background: var(--surface-1); border: 1px solid var(--border);
  border-radius: 8px; padding: .5rem .7rem; min-height: 38px; width: 100%;
}
textarea { min-height: 90px; resize: vertical; }
label { display: block; font-weight: 600; font-size: .9rem; margin: 0 0 .3rem; }
.field { margin-bottom: 1rem; }
.hint { font-size: .82rem; color: var(--text-muted); margin-top: .25rem; font-weight: 400; }
.row { display: flex; gap: .6rem; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }

.alert { padding: .7rem .9rem; border-radius: 8px; margin: 0 0 1rem; font-size: .92rem; border: 1px solid; }
.alert.error { background: var(--critical-soft); border-color: var(--critical); color: var(--text-primary); }
.alert.error::before { content: "⚠ "; color: var(--critical); font-weight: 700; }
.alert.ok { background: var(--accent-soft); border-color: var(--accent); }
.alert.ok::before { content: "✓ "; font-weight: 700; color: var(--good-ink); }
.alert.info { background: var(--surface-2); border-color: var(--border); }

/* ---------- login ---------- */
.auth-wrap { min-height: 100vh; display: grid; place-items: center; padding: 24px 16px; }
.auth-card { width: 100%; max-width: 420px; background: var(--surface-1); border: 1px solid var(--border); border-radius: 14px; padding: 28px; box-shadow: var(--shadow); }
.brand { display: flex; align-items: center; gap: .6rem; font-weight: 700; font-size: 1.1rem; margin-bottom: 1.2rem; }
.brand-mark { width: 30px; height: 30px; border-radius: 8px; background: var(--accent); display: grid; place-items: center; color: #fff; font-size: 16px; }
.auth-card button.primary { width: 100%; justify-content: center; }
.qr { display: block; margin: .6rem auto 1rem; width: 200px; height: 200px; border-radius: 8px; background: #fff; padding: 6px; }
.secret { font-family: var(--mono); font-size: .95rem; background: var(--surface-2); padding: .5rem .7rem; border-radius: 6px; text-align: center; word-break: break-all; user-select: all; }
.code-input { font-family: var(--mono); font-size: 1.6rem; letter-spacing: .4em; text-align: center; }
.codes { display: grid; grid-template-columns: 1fr 1fr; gap: .4rem; font-family: var(--mono); background: var(--surface-2); padding: .8rem; border-radius: 8px; margin: .8rem 0; }
.steps { padding-left: 1.2rem; margin: 0 0 1rem; color: var(--text-secondary); font-size: .92rem; }
.linklike { background: none; border: none; color: var(--accent); padding: 0; min-height: 0; font-size: .9rem; }
.linklike:hover { background: none; text-decoration: underline; }

/* ---------- app ---------- */
.topbar { position: sticky; top: 0; z-index: 10; background: var(--surface-1); border-bottom: 1px solid var(--border); }
.topbar-inner { max-width: 1280px; margin: 0 auto; padding: 0 16px; display: flex; align-items: center; gap: 1rem; min-height: 56px; }
.topbar .brand { margin: 0; }
nav.tabs { display: flex; gap: .2rem; overflow-x: auto; scrollbar-width: none; flex: 1; }
nav.tabs a { padding: .45rem .75rem; border-radius: 8px; color: var(--text-secondary); white-space: nowrap; font-weight: 500; font-size: .93rem; }
nav.tabs a:hover { background: var(--surface-2); text-decoration: none; }
nav.tabs a.active { background: var(--accent-soft); color: var(--accent); }
.badge { display: inline-block; min-width: 1.4em; padding: 0 .4em; border-radius: 99px; background: var(--accent); color: #fff; font-size: .72rem; line-height: 1.4em; text-align: center; margin-left: .25rem; font-weight: 700; }
main { max-width: 1280px; margin: 0 auto; padding: 20px 16px 60px; }
.page-head { display: flex; align-items: flex-end; gap: 1rem; flex-wrap: wrap; margin-bottom: 1rem; }
.page-head h1 { margin: 0; }
.page-head p { margin: .2rem 0 0; color: var(--text-secondary); }

.card { background: var(--surface-1); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); min-width: 0; }
.card h2 { margin-bottom: .2rem; }
.card .sub { color: var(--text-muted); font-size: .85rem; margin: 0 0 .8rem; }
.grid { display: grid; gap: 16px; }
.grid.kpis { grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); margin-bottom: 16px; }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(min(100%, 520px), 1fr)); margin-bottom: 16px; }
.kpi .label { color: var(--text-secondary); font-size: .85rem; }
.kpi .value { font-size: 1.9rem; font-weight: 700; font-variant-numeric: tabular-nums; line-height: 1.2; margin-top: .2rem; }
.kpi .foot { color: var(--text-muted); font-size: .8rem; }

.chart-box { position: relative; height: 280px; }
.chart-empty { height: 280px; display: grid; place-items: center; color: var(--text-muted); text-align: center; padding: 1rem; font-size: .92rem; }

.table-wrap { overflow-x: auto; margin: 0 -16px; padding: 0 16px; }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th { text-align: left; font-weight: 600; color: var(--text-secondary); font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; padding: .5rem .6rem; border-bottom: 1px solid var(--border); white-space: nowrap; }
th.num { text-align: right; }
td { padding: .55rem .6rem; border-bottom: 1px solid var(--grid); vertical-align: middle; }
tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--surface-2); }
.ch-cell { display: flex; align-items: center; gap: .55rem; min-width: 180px; }
.ch-cell img { width: 28px; height: 28px; border-radius: 50%; flex: none; background: var(--surface-2); }
.pill { display: inline-block; padding: .05rem .55rem; border-radius: 99px; font-size: .78rem; background: var(--surface-2); color: var(--text-secondary); white-space: nowrap; border: 1px solid var(--border); }
.pill.on { background: var(--accent-soft); color: var(--accent); border-color: transparent; }
.pill.hot::before { content: "🔥 "; }
.trend-up { color: var(--good-ink); }
.trend-up::before { content: "▲ "; font-size: .75em; }
.trend-down { color: var(--critical); }
.trend-down::before { content: "▼ "; font-size: .75em; }
.empty { text-align: center; padding: 2rem 1rem; color: var(--text-muted); }

.filters { display: flex; gap: .6rem; align-items: center; flex-wrap: wrap; margin-bottom: 16px; }
.filters select { width: auto; min-width: 220px; }
.toolbar { display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; margin-bottom: .8rem; }
.toolbar input[type=search] { width: auto; flex: 1; min-width: 180px; }

.settings-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); gap: 0 24px; }
.toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: var(--text-primary); color: var(--surface-1); padding: .7rem 1.1rem; border-radius: 8px; z-index: 100; box-shadow: var(--shadow); max-width: calc(100vw - 32px); font-size: .92rem; }
.toast.error { background: var(--critical); color: #fff; }

dialog { border: 1px solid var(--border); border-radius: 12px; background: var(--surface-1); color: var(--text-primary); padding: 20px; max-width: min(460px, calc(100vw - 32px)); width: 100%; }
dialog::backdrop { background: rgba(0,0,0,.45); }

.term { display: inline-block; font-size: .8rem; padding: .05rem .5rem; border-radius: 6px; background: var(--surface-2); margin: 0 .25rem .25rem 0; }
.checkbox { width: auto; min-height: 0; }

@media (max-width: 720px) {
  .topbar-inner { flex-wrap: wrap; padding-top: 8px; gap: .4rem; }
  nav.tabs { order: 3; flex-basis: 100%; padding-bottom: 6px; }
  .kpi .value { font-size: 1.5rem; }
  .hide-sm { display: none; }
}
.mt { margin-top: 1rem; }
.mb { margin-bottom: 1rem; }
label.plain { font-weight: 400; }