:root {
    --bg: #f6f7f9;
    --panel: #ffffff;
    --panel-alt: #fbfcfd;
    --ink: #16202b;
    --ink-soft: #5b6875;
    --ink-faint: #8d99a6;
    --line: #e2e7ec;
    --brand: #0b6ab0;
    --brand-soft: #e8f2fa;
    --good: #1a7f52;
    --good-soft: #e6f5ee;
    --bad: #b3341f;
    --bad-soft: #fceeeb;
    --warn: #8a6100;
    --warn-soft: #fdf3df;
    --radius: 10px;
    --shadow: 0 1px 2px rgba(16, 32, 48, .06), 0 8px 24px rgba(16, 32, 48, .05);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0f1419;
        --panel: #161c23;
        --panel-alt: #1b222b;
        --ink: #e6ebf0;
        --ink-soft: #a3b0bd;
        --ink-faint: #75828f;
        --line: #262f3a;
        --brand: #58a9e6;
        --brand-soft: #16283a;
        --good: #4cc38a;
        --good-soft: #10281f;
        --bad: #f07a63;
        --bad-soft: #2b1613;
        --warn: #e0b155;
        --warn-soft: #2a2013;
        --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
    }
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font: 15px/1.55 -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 1240px; margin: 0 auto; padding: 0 20px; }

/* ---------- nagłówek ---------- */
header.top {
    background: var(--panel);
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 20;
}

.top-inner { display: flex; align-items: center; gap: 28px; height: 60px; }

.logo { font-weight: 700; font-size: 17px; letter-spacing: -.2px; color: var(--ink); }
.logo span { color: var(--brand); }
.logo small { display: block; font-weight: 400; font-size: 11px; color: var(--ink-faint); letter-spacing: .3px; }

nav.main { display: flex; gap: 4px; margin-left: auto; flex-wrap: wrap; }
nav.main a {
    padding: 7px 13px;
    border-radius: 7px;
    color: var(--ink-soft);
    font-size: 14px;
    font-weight: 500;
}
nav.main a:hover { background: var(--panel-alt); text-decoration: none; color: var(--ink); }
nav.main a.active { background: var(--brand-soft); color: var(--brand); }

/* ---------- typografia ---------- */
h1 { font-size: 25px; margin: 26px 0 6px; letter-spacing: -.3px; }
h2 { font-size: 18px; margin: 30px 0 12px; letter-spacing: -.2px; }
h3 { font-size: 15px; margin: 0 0 8px; }
.lead { color: var(--ink-soft); margin: 0 0 22px; max-width: 74ch; }
.muted { color: var(--ink-faint); }
.small { font-size: 13px; }

/* ---------- panele ---------- */
.panel {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 18px;
    margin-bottom: 18px;
}
.panel h2:first-child, .panel h3:first-child { margin-top: 0; }

.grid { display: grid; gap: 14px; }
.grid.c4 { grid-template-columns: repeat(4, 1fr); }
.grid.c3 { grid-template-columns: repeat(3, 1fr); }
.grid.c2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 900px) { .grid.c4, .grid.c3, .grid.c2 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px) { .grid.c4, .grid.c3, .grid.c2 { grid-template-columns: 1fr; } }

/* ---------- kafle liczbowe ---------- */
.tile {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 15px 16px;
}
.tile .value { font-size: 26px; font-weight: 650; letter-spacing: -.6px; }
.tile .label { font-size: 12.5px; color: var(--ink-faint); text-transform: uppercase; letter-spacing: .4px; margin-top: 2px; }
.tile.good .value { color: var(--good); }
.tile.bad .value { color: var(--bad); }

/* ---------- tabele ---------- */
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 9px 11px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .4px; color: var(--ink-faint); font-weight: 600; white-space: nowrap; }
tbody tr:hover { background: var(--panel-alt); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.table-scroll { overflow-x: auto; }

/* ---------- plakietki ---------- */
.chip {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 11.5px;
    font-weight: 600;
    background: var(--panel-alt);
    color: var(--ink-soft);
    border: 1px solid var(--line);
    white-space: nowrap;
}
.chip.brand { background: var(--brand-soft); color: var(--brand); border-color: transparent; }
.chip.good { background: var(--good-soft); color: var(--good); border-color: transparent; }
.chip.bad { background: var(--bad-soft); color: var(--bad); border-color: transparent; }
.chip.warn { background: var(--warn-soft); color: var(--warn); border-color: transparent; }

.chips { display: flex; flex-wrap: wrap; gap: 5px; }

/* ---------- formularz filtrów ---------- */
form.filters { display: flex; flex-wrap: wrap; gap: 9px; align-items: center; }
input[type=text], input[type=email], input[type=password], select {
    padding: 7px 10px;
    border: 1px solid var(--line);
    border-radius: 7px;
    background: var(--panel);
    color: var(--ink);
    font-size: 14px;
    font-family: inherit;
}
input[type=text] { min-width: 230px; }
button, .btn {
    padding: 7px 14px;
    border: 1px solid transparent;
    border-radius: 7px;
    background: var(--brand);
    color: #fff;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    font-family: inherit;
}
.btn.ghost { background: transparent; color: var(--ink-soft); border-color: var(--line); }
label.check { display: flex; align-items: center; gap: 6px; font-size: 14px; color: var(--ink-soft); }

/* ---------- karta produktu ---------- */
.product-head { display: flex; gap: 20px; align-items: flex-start; }
.product-head img { width: 132px; height: 132px; object-fit: contain; background: #fff; border-radius: 8px; border: 1px solid var(--line); padding: 8px; flex: none; }
.product-head .meta { flex: 1; min-width: 0; }

.kv { display: grid; grid-template-columns: auto 1fr; gap: 3px 14px; font-size: 13.5px; }
.kv dt { color: var(--ink-faint); }
.kv dd { margin: 0; }

/* ---------- kandydaci ---------- */
.shop-block { border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 14px; overflow: hidden; }
.shop-head {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 14px;
    background: var(--panel-alt);
    border-bottom: 1px solid var(--line);
}
.shop-head .name { font-weight: 650; }

.cand { display: flex; gap: 14px; padding: 13px 14px; border-bottom: 1px solid var(--line); }
.cand:last-child { border-bottom: 0; }
.cand img { width: 62px; height: 62px; object-fit: contain; background: #fff; border-radius: 6px; border: 1px solid var(--line); flex: none; }
.cand .body { flex: 1; min-width: 0; }
.cand .title { font-weight: 600; font-size: 14.5px; margin-bottom: 3px; }
.cand .why { font-size: 12.5px; color: var(--ink-soft); margin-top: 6px; }
.cand .why b { color: var(--ink); font-weight: 600; }
.cand .price-col { text-align: right; flex: none; min-width: 168px; font-variant-numeric: tabular-nums; }
.cand .price-col .big { font-size: 17px; font-weight: 650; }

.score {
    flex: none; width: 46px; height: 46px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 15px;
    background: var(--brand-soft); color: var(--brand);
}
.score.s-high { background: var(--good-soft); color: var(--good); }
.score.s-low { background: var(--panel-alt); color: var(--ink-faint); }

.delta-pos { color: var(--bad); font-weight: 650; }
.delta-neg { color: var(--good); font-weight: 650; }

.empty { padding: 16px; color: var(--ink-faint); font-size: 13.5px; }

/* ---------- paginacja ---------- */
.pagination { display: flex; gap: 5px; flex-wrap: wrap; list-style: none; padding: 0; margin: 18px 0; font-size: 14px; }
.pagination li span, .pagination li a { display: block; padding: 6px 11px; border: 1px solid var(--line); border-radius: 7px; background: var(--panel); }
.pagination li.active span { background: var(--brand); color: #fff; border-color: var(--brand); }
.pagination li.disabled span { color: var(--ink-faint); }

/* ---------- pasek pokrycia ---------- */
.bar { position: relative; height: 20px; background: var(--panel-alt); border-radius: 4px; overflow: hidden; min-width: 68px; }
.bar i { position: absolute; inset: 0 auto 0 0; background: var(--brand); opacity: .8; }
.bar b { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; font-size: 11.5px; font-weight: 600; color: var(--ink); }
.bar.low i { background: var(--bad); }
.bar.mid i { background: var(--warn); }
.bar.high i { background: var(--good); }

/* ---------- logowanie ---------- */
.logout-form { display: flex; align-items: center; gap: 9px; margin-left: 10px; padding-left: 14px; border-left: 1px solid var(--line); }
.logout-form .who { font-size: 13px; color: var(--ink-faint); }
.logout-form button { padding: 5px 11px; font-size: 13px; }

.login-wrap { display: flex; justify-content: center; padding: 48px 0 20px; }
.login-card { width: 100%; max-width: 420px; }
.login-card h1 { font-size: 21px; margin: 0 0 8px; letter-spacing: -.3px; }
.login-card .lead { margin-bottom: 18px; }

.login-form { display: flex; flex-direction: column; gap: 6px; }
.login-form label { font-size: 13px; color: var(--ink-soft); }
.login-form label + input { margin-bottom: 8px; }
.login-form input[type=email], .login-form input[type=password] { width: 100%; padding: 9px 11px; font-size: 15px; }
.login-form label.check { margin: 4px 0 12px; }
.login-form button { padding: 9px 14px; font-size: 15px; }

.login-error, .login-status { border-radius: 8px; padding: 9px 12px; font-size: 13.5px; margin: 0 0 14px; }
.login-error { background: var(--bad-soft); color: var(--bad); }
.login-status { background: var(--good-soft); color: var(--good); }
.login-note { margin: 16px 0 0; }
.login-note code { background: var(--panel-alt); border: 1px solid var(--line); border-radius: 5px; padding: 1px 5px; font-size: 12px; }

footer.bottom { color: var(--ink-faint); font-size: 12.5px; padding: 26px 0 40px; }