/* ==========================================================================
   VN E-Paragon — publiczna strona informacyjna
   Paleta: papier termiczny + granat/błękit VisualNet
   ========================================================================== */

:root {
    --paper: #F5F6F3;        /* tło strony — papier termiczny */
    --paper-hi: #FDFDFB;     /* papier paragonu / karty */
    --ink: #102433;          /* druk termiczny / tekst */
    --ink-soft: #46586A;     /* tekst drugorzędny */
    --navy: #0D2B3E;         /* granat VisualNet — sekcje ciemne */
    --blue: #1789C9;         /* brand */
    --sky: #2AA9E0;          /* brand jasny */
    --mist: #E4EEF5;         /* tła wyróżnień */
    --line: #D7DFE5;         /* linie, ramki */
    --stamp: #D9512C;        /* akcent „fiskalny” — oszczędnie */
    --ok: #1E9E6A;

    --font-display: 'Space Grotesk', sans-serif;
    --font-body: 'IBM Plex Sans', sans-serif;
    --font-mono: 'IBM Plex Mono', monospace;

    --radius: 10px;
    --maxw: 1140px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    font-size: 17px;
    line-height: 1.65;
    color: var(--ink);
    background: var(--paper);
    -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; display: block; }

a { color: var(--blue); }
a:focus-visible, button:focus-visible {
    outline: 3px solid var(--sky);
    outline-offset: 2px;
    border-radius: 4px;
}

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* --------------------------------------------------------------------------
   Typografia
   -------------------------------------------------------------------------- */

h1, h2, h3 { font-family: var(--font-display); line-height: 1.15; letter-spacing: -0.01em; }

h1 { font-size: clamp(2.1rem, 4.6vw, 3.4rem); font-weight: 700; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 700; }
h3 { font-size: 1.15rem; font-weight: 600; }

.lead { font-size: 1.15rem; color: var(--ink-soft); max-width: 34em; }

.eyebrow {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--blue);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}
.eyebrow::before {
    content: "";
    width: 26px; height: 1px;
    background: var(--blue);
}

/* dashed „paragonowa” linia jako separator treści */
.dash-rule {
    border: none;
    border-top: 2px dashed var(--line);
    margin: 26px 0;
}

/* --------------------------------------------------------------------------
   Nawigacja
   -------------------------------------------------------------------------- */

.site-nav {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(245, 246, 243, 0.92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--line);
}
.site-nav .container {
    display: flex;
    align-items: center;
    gap: 28px;
    min-height: 64px;
}
.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--ink);
    text-decoration: none;
    margin-right: auto;
}
.brand img.brand-logo { height: 64px; width: auto; }
.brand small {
    font-family: var(--font-mono);
    font-weight: 400;
    font-size: 0.68rem;
    color: var(--ink-soft);
    display: block;
    line-height: 1.1;
}

.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; }
.nav-links a {
    display: block;
    padding: 8px 12px;
    font-size: 0.94rem;
    font-weight: 500;
    color: var(--ink);
    text-decoration: none;
    border-radius: 6px;
}
.nav-links a:hover { background: var(--mist); }
.nav-links a.active { color: var(--blue); }
/* przyciski w nawigacji zachowują własny hover (inaczej: jasny tekst na jasnym tle) */
.nav-links a.btn-ghost:hover { background: var(--ink); color: var(--paper); }
.nav-links a.btn-primary:hover { background: linear-gradient(180deg, var(--sky), var(--blue)); color: #fff; }

.nav-toggle { display: none; }

/* --------------------------------------------------------------------------
   Przyciski
   -------------------------------------------------------------------------- */

.btn {
    display: inline-block;
    padding: 12px 22px;
    font-family: var(--font-body);
    font-size: 0.98rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius);
    border: 2px solid transparent;
    cursor: pointer;
    transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
    background: linear-gradient(180deg, var(--sky), var(--blue));
    color: #fff;
    box-shadow: 0 6px 18px rgba(23, 137, 201, 0.35);
}
.btn-ghost {
    border-color: var(--ink);
    color: var(--ink);
    background: transparent;
}
.btn-ghost:hover { background: var(--ink); color: var(--paper); }
.btn-light {
    background: #fff;
    color: var(--navy);
    border-color: #fff;
}
.btn-sm { padding: 8px 16px; font-size: 0.88rem; }

/* --------------------------------------------------------------------------
   Sekcje
   -------------------------------------------------------------------------- */

.section { padding: 84px 0; }
.section-mist { background: var(--mist); }
.section-navy { background: var(--navy); color: #E8F1F7; }
.section-navy h2 { color: #fff; }
.section-navy .lead { color: #A8C4D6; }
.section-navy .eyebrow { color: var(--sky); }
.section-navy .eyebrow::before { background: var(--sky); }

.section-head { max-width: 640px; margin-bottom: 46px; }

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */

.hero { padding: 72px 0 96px; overflow: hidden; }
.hero .container {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 56px;
    align-items: center;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin: 30px 0 22px; }
.hero-note {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--ink-soft);
}
.hero-note b { color: var(--ink); font-weight: 600; }

/* --------------------------------------------------------------------------
   Artefakt paragonu (znak rozpoznawczy strony)
   -------------------------------------------------------------------------- */

.receipt {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    line-height: 1.7;
    color: var(--ink);
    background: var(--paper-hi);
    width: min(330px, 100%);
    margin: 0 auto;
    padding: 26px 24px 34px;
    position: relative;
    box-shadow: 0 24px 60px rgba(13, 43, 62, 0.18);
    border-top: 4px solid var(--navy);
}
/* ząbkowana, „oderwana” dolna krawędź */
.receipt::after {
    content: "";
    position: absolute;
    left: 0; right: 0; bottom: -12px;
    height: 12px;
    background:
        linear-gradient(-45deg, transparent 8px, var(--paper-hi) 0) 0 0 / 16px 16px repeat-x,
        linear-gradient(45deg, transparent 8px, var(--paper-hi) 0) 8px 0 / 16px 16px repeat-x;
}
.receipt .r-center { text-align: center; }
.receipt .r-store { font-weight: 600; font-size: 0.9rem; letter-spacing: 0.04em; }
.receipt .r-muted { color: var(--ink-soft); font-size: 0.74rem; }
.receipt .r-dash { border-top: 2px dashed var(--line); margin: 12px 0; }
.receipt .r-row { display: flex; justify-content: space-between; gap: 12px; }
.receipt .r-total { font-weight: 700; font-size: 1rem; }
.receipt .r-link {
    font-size: 0.72rem;
    color: var(--blue);
    word-break: break-all;
    text-align: center;
}
.receipt .r-badge {
    display: block;
    width: fit-content;
    margin: 14px auto 0;
    padding: 3px 10px;
    border: 1.5px solid var(--stamp);
    border-radius: 4px;
    color: var(--stamp);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transform: rotate(-2deg);
}
.receipt .r-qr { margin: 14px auto 8px; width: 84px; height: 84px; }

/* animacja „wydruku” w hero */
@keyframes print-out {
    from { transform: translateY(-26px); opacity: 0; }
    to   { transform: translateY(0); opacity: 1; }
}
.hero .receipt { animation: print-out 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0.15s backwards; }

/* --------------------------------------------------------------------------
   Kroki „jak to działa” — pozycje jak na paragonie
   -------------------------------------------------------------------------- */

.steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    counter-reset: step;
}
.step {
    background: var(--paper-hi);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 24px 22px;
    position: relative;
}
.step::before {
    counter-increment: step;
    content: "poz. " counter(step);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--blue);
    display: block;
    margin-bottom: 12px;
}
.step h3 { margin-bottom: 8px; }
.step p { font-size: 0.92rem; color: var(--ink-soft); }
.step .step-arrow {
    position: absolute;
    top: 50%;
    right: -16px;
    transform: translateY(-50%);
    z-index: 1;
    color: var(--blue);
    font-family: var(--font-mono);
    font-size: 1rem;
}

/* --------------------------------------------------------------------------
   Karty zalet
   -------------------------------------------------------------------------- */

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}
.card {
    background: var(--paper-hi);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 26px 24px;
}
.card h3 { margin-bottom: 8px; }
.card p { font-size: 0.94rem; color: var(--ink-soft); }
.card .card-ico {
    width: 40px; height: 40px;
    display: grid;
    place-items: center;
    background: var(--mist);
    color: var(--blue);
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 1.1rem;
}

/* --------------------------------------------------------------------------
   Split — drukarka u nas / u Ciebie
   -------------------------------------------------------------------------- */

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.offer {
    border-radius: var(--radius);
    padding: 32px 30px;
    background: var(--paper-hi);
    border: 1px solid var(--line);
    display: flex;
    flex-direction: column;
}
.offer-featured {
    background: var(--navy);
    color: #E8F1F7;
    border-color: var(--navy);
}
.offer-featured h3 { color: #fff; }
.offer .offer-tag {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 14px;
    color: var(--blue);
}
.offer-featured .offer-tag { color: var(--sky); }
.offer h3 { font-size: 1.35rem; margin-bottom: 12px; }
.offer ul { list-style: none; margin: 18px 0 0; flex: 1; }
.offer li {
    padding: 9px 0 9px 28px;
    position: relative;
    font-size: 0.95rem;
    border-bottom: 1px dashed var(--line);
}
.offer-featured li { border-bottom-color: rgba(255, 255, 255, 0.14); }
.offer li:last-child { border-bottom: none; }
.offer li::before {
    content: "✓";
    position: absolute;
    left: 2px;
    color: var(--ok);
    font-weight: 700;
}
.offer-featured li::before { color: var(--sky); }

/* --------------------------------------------------------------------------
   Blok kodu API
   -------------------------------------------------------------------------- */

.codeblock {
    background: #0A1F2D;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    overflow: hidden;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 1.7;
}
.codeblock .code-title {
    display: flex;
    justify-content: space-between;
    padding: 10px 18px;
    background: rgba(255, 255, 255, 0.06);
    color: #7FA8C0;
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.codeblock pre {
    padding: 18px;
    overflow-x: auto;
    color: #D9E8F2;
}
.codeblock .tk-key { color: var(--sky); }
.codeblock .tk-str { color: #9AD1A2; }
.codeblock .tk-com { color: #5E7C8F; }
.api-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; align-items: start; }
.api-points { list-style: none; margin-top: 8px; }
.api-points li {
    padding: 12px 0 12px 30px;
    position: relative;
    border-bottom: 1px dashed rgba(255, 255, 255, 0.15);
    font-size: 0.96rem;
}
.api-points li::before {
    content: ">";
    font-family: var(--font-mono);
    position: absolute;
    left: 4px;
    color: var(--sky);
    font-weight: 700;
}

/* --------------------------------------------------------------------------
   Pas integracji
   -------------------------------------------------------------------------- */

.integration {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 40px;
    align-items: center;
}
.integration-badge {
    font-family: var(--font-mono);
    background: var(--paper-hi);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 28px;
    text-align: center;
}
.integration-badge .int-arrow { color: var(--blue); font-size: 1.3rem; margin: 10px 0; }
.integration-badge .int-node {
    display: block;
    padding: 12px;
    border: 2px dashed var(--line);
    border-radius: 8px;
    font-size: 0.86rem;
    font-weight: 600;
}
.integration-badge .int-node small { display: block; font-weight: 400; color: var(--ink-soft); font-size: 0.72rem; }

/* --------------------------------------------------------------------------
   FAQ
   -------------------------------------------------------------------------- */

.faq { max-width: 760px; }
.faq details {
    border-bottom: 2px dashed var(--line);
    padding: 6px 0;
}
.faq summary {
    cursor: pointer;
    font-weight: 600;
    font-family: var(--font-display);
    font-size: 1.05rem;
    padding: 14px 0;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
    content: "+";
    font-family: var(--font-mono);
    color: var(--blue);
    font-size: 1.3rem;
    flex-shrink: 0;
}
.faq details[open] summary::after { content: "–"; }
.faq details p { padding: 0 0 18px; color: var(--ink-soft); max-width: 60ch; }

/* --------------------------------------------------------------------------
   CTA końcowe + stopka
   -------------------------------------------------------------------------- */

.cta-final { text-align: center; }
.cta-final .btn { margin-top: 26px; }
.cta-final .cta-mail {
    display: block;
    margin-top: 18px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: #A8C4D6;
}
.cta-final .cta-mail a { color: var(--sky); }

.site-footer {
    background: var(--navy);
    color: #7FA8C0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 34px 0;
    font-size: 0.86rem;
}
.site-footer .container {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    justify-content: space-between;
    align-items: center;
}
.site-footer a { color: #A8C4D6; text-decoration: none; }
.site-footer a:hover { color: #fff; }
.site-footer nav { display: flex; gap: 18px; flex-wrap: wrap; }

/* --------------------------------------------------------------------------
   Podstrony — nagłówek i proza
   -------------------------------------------------------------------------- */

.page-head { padding: 72px 0 30px; }
.page-head .container { max-width: 760px; }
.page-head .lead { margin-top: 14px; }

.prose { max-width: 760px; }
.prose h2 { margin: 46px 0 14px; }
.prose h3 { margin: 30px 0 10px; }
.prose p { margin-bottom: 16px; }
.prose ul, .prose ol { margin: 0 0 16px 22px; }
.prose li { margin-bottom: 6px; }
.prose .codeblock { margin: 22px 0; }

.kv-table { width: 100%; border-collapse: collapse; font-size: 0.92rem; margin: 18px 0; }
.kv-table th, .kv-table td {
    text-align: left;
    padding: 10px 14px;
    border-bottom: 1px dashed var(--line);
    vertical-align: top;
}
.kv-table th { font-family: var(--font-mono); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-soft); }
.kv-table code { font-family: var(--font-mono); font-size: 0.84em; background: var(--mist); padding: 2px 6px; border-radius: 4px; }

/* --------------------------------------------------------------------------
   Panel klienta
   -------------------------------------------------------------------------- */

.panel-main { padding: 40px 0 70px; min-height: 60vh; }
.panel-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 14px; margin-bottom: 26px; }
.panel-head h1 { font-size: clamp(1.5rem, 3vw, 2rem); }
.panel-head .system-name {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--ink-soft);
    background: var(--mist);
    padding: 4px 12px;
    border-radius: 6px;
}

.panel-nav { border-bottom: 1px solid var(--line); background: var(--paper-hi); }
.panel-nav .container { display: flex; gap: 2px; flex-wrap: wrap; }
.panel-nav a {
    padding: 13px 16px;
    font-size: 0.93rem;
    font-weight: 500;
    color: var(--ink);
    text-decoration: none;
    border-bottom: 3px solid transparent;
    margin-bottom: -1px;
}
.panel-nav a:hover { background: var(--mist); }
.panel-nav a.active { color: var(--blue); border-bottom-color: var(--blue); }

.stat-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 16px; margin-bottom: 34px; }
.stat-card {
    background: var(--paper-hi);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 18px 20px;
}
.stat-card .stat-label {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-soft);
}
.stat-card .stat-value { font-family: var(--font-display); font-size: 1.7rem; font-weight: 700; margin-top: 4px; }
.stat-card .stat-sub { font-size: 0.82rem; color: var(--ink-soft); }

.panel-table { width: 100%; border-collapse: collapse; font-size: 0.92rem; background: var(--paper-hi); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.panel-table th, .panel-table td { text-align: left; padding: 11px 14px; border-bottom: 1px dashed var(--line); vertical-align: middle; }
.panel-table thead th {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ink-soft);
    background: var(--mist);
    border-bottom: 1px solid var(--line);
}
.panel-table tbody tr:hover { background: #F0F5F9; }
.panel-table tfoot td { font-weight: 700; background: var(--mist); border-top: 2px solid var(--line); }
.panel-table .num { text-align: right; font-variant-numeric: tabular-nums; }
.panel-table td.mono, .mono { font-family: var(--font-mono); font-size: 0.84em; }

.badge-status { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: 0.78rem; font-weight: 600; }
.badge-online { background: #DEF3E8; color: var(--ok); }
.badge-offline { background: #FBE4DC; color: var(--stamp); }
.badge-unknown { background: var(--mist); color: var(--ink-soft); }

.token-box {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    background: var(--mist);
    padding: 4px 8px;
    border-radius: 4px;
    word-break: break-all;
    cursor: pointer;
}

.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: flex-end;
    background: var(--paper-hi);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 14px 16px;
    margin-bottom: 20px;
}
.filter-bar label { display: block; font-size: 0.74rem; color: var(--ink-soft); margin-bottom: 3px; }
.filter-bar input, .filter-bar select {
    font-family: var(--font-body);
    font-size: 0.9rem;
    padding: 8px 10px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: #fff;
    color: var(--ink);
}
.filter-bar .quick-links { margin-left: auto; display: flex; gap: 6px; flex-wrap: wrap; }
.filter-bar .quick-links a {
    font-size: 0.8rem;
    padding: 6px 10px;
    border: 1px solid var(--line);
    border-radius: 6px;
    text-decoration: none;
    color: var(--ink);
}
.filter-bar .quick-links a:hover { background: var(--mist); }

.pagination { display: flex; gap: 6px; margin-top: 18px; align-items: center; font-size: 0.9rem; }
.pagination a, .pagination span.current {
    padding: 7px 13px;
    border: 1px solid var(--line);
    border-radius: 6px;
    text-decoration: none;
}
.pagination span.current { background: var(--blue); border-color: var(--blue); color: #fff; }

/* --------------------------------------------------------------------------
   Animacje wejścia (scroll reveal)
   -------------------------------------------------------------------------- */

.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .hero .receipt { animation: none; }
    .reveal { opacity: 1; transform: none; transition: none; }
    .btn { transition: none; }
}

/* --------------------------------------------------------------------------
   Responsywność
   -------------------------------------------------------------------------- */

@media (max-width: 960px) {
    .steps { grid-template-columns: 1fr 1fr; }
    .step .step-arrow { display: none; }
    .grid-3 { grid-template-columns: 1fr 1fr; }
    .api-cols, .integration { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
    .section { padding: 60px 0; }
    .hero { padding: 40px 0 70px; }
    .hero .container { grid-template-columns: 1fr; gap: 44px; }

    .nav-toggle {
        display: block;
        margin-left: auto;
        background: none;
        border: 1px solid var(--line);
        border-radius: 6px;
        padding: 7px 12px;
        font-family: var(--font-mono);
        font-size: 0.9rem;
        color: var(--ink);
        cursor: pointer;
    }
    .brand { margin-right: 0; }
    .site-nav .container { flex-wrap: wrap; padding-top: 10px; padding-bottom: 10px; }
    .nav-links {
        display: none;
        flex-direction: column;
        align-items: stretch;
        width: 100%;
        padding-bottom: 10px;
    }
    .nav-links.open { display: flex; }
}

@media (max-width: 560px) {
    .steps, .grid-3, .split { grid-template-columns: 1fr; }
}