/* Błysk Energii — handwritten stylesheet. Prefix: bl- */

:root {
    --bl-ink: #10253A;
    --bl-ink-soft: #1D3A57;
    --bl-amber: #F5A300;
    --bl-amber-deep: #8F5A00;
    --bl-amber-wash: #FFF4D9;
    --bl-teal: #12695C;
    --bl-teal-wash: #E3F3EF;
    --bl-paper: #FBF8F1;
    --bl-card: #FFFFFF;
    --bl-line: #E4DCCB;
    --bl-muted: #4A5866;
    --bl-radius: 14px;
    --bl-serif: "Literata", Georgia, "Times New Roman", serif;
    --bl-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
    margin: 0;
    background: var(--bl-paper);
    color: var(--bl-ink);
    font-family: var(--bl-sans);
    font-size: 17px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; height: auto; }

a { color: var(--bl-teal); text-underline-offset: 3px; }
a:hover { color: var(--bl-ink); }

.bl-skip {
    position: absolute; left: -9999px; top: 0;
    background: var(--bl-ink); color: #fff; padding: 10px 16px; border-radius: 0 0 10px 0; z-index: 100;
}
.bl-skip:focus { left: 0; }

.bl-wrap { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.bl-wrap--article { max-width: 760px; }

/* ---- top bar ---- */
.bl-top { background: var(--bl-card); border-bottom: 1px solid var(--bl-line); }
.bl-top__row { display: flex; align-items: center; justify-content: space-between; min-height: 64px; gap: 16px; }

.bl-logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--bl-ink); }
.bl-logo__mark { flex: none; border-radius: 10px; }
.bl-logo__word { font-family: var(--bl-serif); font-size: 22px; line-height: 1; letter-spacing: -0.01em; }
.bl-logo__a { font-weight: 700; color: var(--bl-ink); }
.bl-logo__b { font-weight: 500; color: var(--bl-amber-deep); }

.bl-nav { display: flex; gap: 22px; font-size: 15px; font-weight: 500; }
.bl-nav a { color: var(--bl-ink); text-decoration: none; padding: 6px 2px; border-bottom: 2px solid transparent; }
.bl-nav a:hover { border-bottom-color: var(--bl-amber); }

/* ---- article ---- */
.bl-article { padding: 32px 0 56px; }

.bl-adlabel {
    display: inline-block; margin: 0 0 14px; padding: 4px 12px;
    border: 1px solid var(--bl-ink); border-radius: 999px;
    font-size: 12px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--bl-ink);
    background: #fff;
}

.bl-article h1 {
    margin: 0 0 18px;
    font-family: var(--bl-serif); font-weight: 700;
    font-size: clamp(28px, 5.2vw, 42px); line-height: 1.18; letter-spacing: -0.015em;
}

.bl-lead { font-size: 19px; line-height: 1.65; margin: 0 0 14px; color: #1b2f44; }

.bl-meta { margin: 0 0 24px; font-size: 14px; color: var(--bl-muted); }

.bl-fig { margin: 26px 0; }
.bl-fig img { display: block; width: 100%; border-radius: var(--bl-radius); background: #dfe6ec; }
.bl-fig figcaption { margin-top: 8px; font-size: 13.5px; color: var(--bl-muted); line-height: 1.5; }
.bl-fig--diagram { background: #fff; border: 1px solid var(--bl-line); border-radius: var(--bl-radius); padding: 14px 14px 12px; }
.bl-diagram { display: block; width: 100%; height: auto; }

.bl-article h2 {
    margin: 42px 0 12px;
    font-family: var(--bl-serif); font-weight: 700;
    font-size: clamp(22px, 3.6vw, 29px); line-height: 1.25; letter-spacing: -0.01em;
}
.bl-article h3 { margin: 26px 0 8px; font-size: 18px; font-weight: 600; }

.bl-article p { margin: 0 0 16px; }
.bl-article ul, .bl-article ol { margin: 0 0 18px; padding-left: 22px; }
.bl-article li { margin-bottom: 8px; }

.bl-sum {
    margin: 22px 0 8px; padding: 18px 20px;
    background: var(--bl-amber-wash); border-left: 5px solid var(--bl-amber); border-radius: 4px var(--bl-radius) var(--bl-radius) 4px;
}
.bl-sum h2 { margin: 0 0 8px; font-size: 17px; font-family: var(--bl-sans); letter-spacing: 0; text-transform: uppercase; font-weight: 700; color: var(--bl-amber-deep); }
.bl-sum ul { margin: 0; padding-left: 20px; }
.bl-sum li:last-child { margin-bottom: 0; }

.bl-example {
    margin: 22px 0; padding: 18px 20px;
    background: #fff; border: 1.5px dashed #B9AE96; border-radius: var(--bl-radius);
}
.bl-example__tag {
    display: inline-block; margin: 0 0 8px; padding: 2px 10px;
    font-size: 12px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase;
    background: var(--bl-ink); color: #fff; border-radius: 999px;
}
.bl-example p:last-child { margin-bottom: 0; }

.bl-warn {
    margin: 22px 0; padding: 16px 20px;
    background: var(--bl-teal-wash); border: 1px solid #B7DBD3; border-radius: var(--bl-radius);
}
.bl-warn strong { color: var(--bl-teal); }
.bl-warn p:last-child { margin-bottom: 0; }

.bl-checks { list-style: none; padding-left: 0 !important; }
.bl-checks li { position: relative; padding-left: 32px; }
.bl-checks li::before {
    content: ""; position: absolute; left: 0; top: .32em; width: 20px; height: 20px; border-radius: 6px;
    background: var(--bl-teal) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='m5 10.5 3.2 3.2L15 6.8' fill='none' stroke='%23fff' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/16px no-repeat;
}

.bl-steps { counter-reset: blstep; list-style: none; padding-left: 0 !important; }
.bl-steps li { position: relative; padding-left: 46px; counter-increment: blstep; }
.bl-steps li::before {
    content: counter(blstep); position: absolute; left: 0; top: -2px; width: 32px; height: 32px; border-radius: 50%;
    display: grid; place-items: center; background: var(--bl-ink); color: var(--bl-amber); font-weight: 700; font-size: 15px;
}

/* ---- call to action ---- */
.bl-cta {
    margin: 30px 0; padding: 26px 24px; border-radius: 18px;
    background: var(--bl-ink); color: #fff;
}
.bl-cta h2, .bl-cta h3 { margin: 0 0 8px; color: #fff; font-family: var(--bl-serif); font-size: 24px; line-height: 1.25; }
.bl-cta p { color: #DCE4EC; margin: 0 0 16px; }
.bl-cta__note { font-size: 13.5px; color: #B8C6D4 !important; margin: 14px 0 0 !important; line-height: 1.55; }

.bl-btn {
    display: inline-block; padding: 14px 24px; border-radius: 12px;
    background: var(--bl-amber); color: var(--bl-ink); font-weight: 700; font-size: 16px; text-decoration: none; text-align: center;
    border: 0; cursor: pointer;
}
.bl-btn:hover { background: #FFB92E; color: var(--bl-ink); }
.bl-btn:focus-visible { outline: 3px solid #fff; outline-offset: 3px; }

/* ---- faq ---- */
.bl-faq details { background: #fff; border: 1px solid var(--bl-line); border-radius: 12px; padding: 4px 18px; margin-bottom: 10px; }
.bl-faq summary { cursor: pointer; font-weight: 600; padding: 12px 0; list-style-position: outside; }
.bl-faq details[open] summary { color: var(--bl-teal); }
.bl-faq details p { margin: 0 0 14px; }

/* ---- sources ---- */
.bl-sources { font-size: 15px; color: var(--bl-muted); }
.bl-sources li { margin-bottom: 6px; }

.bl-byline {
    margin-top: 36px; padding: 18px 20px; background: #fff; border: 1px solid var(--bl-line); border-radius: var(--bl-radius);
    font-size: 15px; color: var(--bl-muted);
}
.bl-byline p { margin: 0 0 8px; }
.bl-byline p:last-child { margin-bottom: 0; }

/* ---- documents (legal, about, contact) ---- */
.bl-doc { padding: 40px 0 64px; }
.bl-doc h1 { font-family: var(--bl-serif); font-size: clamp(28px, 4.6vw, 38px); line-height: 1.2; margin: 0 0 16px; }
.bl-doc h2 { font-family: var(--bl-serif); font-size: 22px; margin: 34px 0 10px; line-height: 1.3; }
.bl-doc h3 { font-size: 17px; margin: 22px 0 6px; }
.bl-doc p, .bl-doc li { max-width: 72ch; }
.bl-doc ul, .bl-doc ol { padding-left: 22px; }
.bl-doc li { margin-bottom: 6px; }
.bl-doc .bl-updated { color: var(--bl-muted); font-size: 14px; margin-bottom: 20px; }

.bl-card {
    background: #fff; border: 1px solid var(--bl-line); border-radius: var(--bl-radius); padding: 20px 22px; margin: 18px 0;
}
.bl-dl { display: grid; grid-template-columns: minmax(130px, 220px) 1fr; gap: 10px 18px; margin: 0; }
.bl-dl dt { font-weight: 600; color: var(--bl-muted); font-size: 15px; }
.bl-dl dd { margin: 0; overflow-wrap: anywhere; }
@media (max-width: 560px) { .bl-dl { grid-template-columns: 1fr; gap: 2px; } .bl-dl dd { margin-bottom: 12px; } }

/* ---- footer ---- */
.bl-foot { background: var(--bl-ink); color: #C9D5E1; padding: 44px 0 30px; font-size: 15px; line-height: 1.6; }
.bl-foot a { color: #fff; text-decoration: none; }
.bl-foot a:hover { color: var(--bl-amber); text-decoration: underline; }
.bl-foot .bl-logo { color: #fff; }
.bl-foot .bl-logo__a { color: #fff; }
.bl-foot .bl-logo__b { color: var(--bl-amber); }
.bl-foot__grid { display: grid; gap: 28px; grid-template-columns: 1.4fr 1fr 1fr 1.3fr; }
.bl-foot__brand p { margin: 14px 0 0; max-width: 34ch; }
.bl-foot h2 { margin: 0 0 10px; font-family: var(--bl-sans); font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: #8FA3B8; font-weight: 600; }
.bl-foot ul { list-style: none; margin: 0; padding: 0; }
.bl-foot li { margin-bottom: 6px; }
.bl-foot p { margin: 0; }
.bl-foot__legal { margin-top: 30px !important; padding-top: 22px; border-top: 1px solid #28435F; font-size: 13.5px; color: #A9B9C9; }
.bl-foot__copy { margin-top: 14px !important; font-size: 13.5px; color: #8FA3B8; }
@media (max-width: 900px) { .bl-foot__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .bl-foot__grid { grid-template-columns: 1fr; } }

/* ---- cookie banner ---- */
.bl-cc {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 200;
    padding: 12px; pointer-events: none;
}
.bl-cc__in {
    pointer-events: auto; max-width: 760px; margin: 0 auto; padding: 18px 20px;
    background: #fff; border: 1px solid var(--bl-line); border-radius: 16px;
    box-shadow: 0 12px 40px rgba(16, 37, 58, .22);
}
.bl-cc__title { margin: 0 0 4px; font-weight: 700; font-size: 16px; }
.bl-cc__text { margin: 0 0 12px; font-size: 14.5px; line-height: 1.55; color: var(--bl-muted); }
.bl-cc__panel { margin: 0 0 12px; padding: 12px 14px; background: var(--bl-paper); border-radius: 12px; display: grid; gap: 10px; }
.bl-cc__panel[hidden] { display: none; }
.bl-cc__row { display: flex; gap: 12px; align-items: flex-start; font-size: 14.5px; line-height: 1.45; cursor: pointer; }
.bl-cc__row input { margin-top: 4px; width: 18px; height: 18px; accent-color: var(--bl-ink); }
.bl-cc__rowtxt { display: grid; }
.bl-cc__rowtxt span { color: var(--bl-muted); font-size: 13.5px; }
.bl-cc__actions { display: flex; flex-wrap: wrap; gap: 10px; }
.bl-cc__btn {
    flex: 1 1 150px; padding: 12px 16px; border-radius: 10px; border: 2px solid var(--bl-ink);
    background: var(--bl-ink); color: #fff; font: 600 15px/1.2 var(--bl-sans); cursor: pointer;
}
.bl-cc__btn:hover { background: var(--bl-ink-soft); }
.bl-cc__btn--ghost { background: #fff; color: var(--bl-ink); }
.bl-cc__btn--ghost:hover { background: var(--bl-paper); }
.bl-cc__btn:focus-visible { outline: 3px solid var(--bl-amber); outline-offset: 2px; }

@media (max-width: 560px) {
    body { font-size: 16.5px; }
    .bl-nav { gap: 16px; }
    .bl-logo__word { font-size: 20px; }
    .bl-cta { padding: 22px 18px; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }