/* ==========================================================================
   EsJos — style strony
   Struktura: 1. Czcionki  2. Zmienne  3. Baza  4. Układ i elementy wspólne
              5. Nagłówek  6. Hero  7. Sekcje  8. Kontakt  9. Stopka
              10. Najechanie kursorem
   ========================================================================== */

/* 1. Czcionki hostowane lokalnie (licencje OFL w assets/fonts/)
   Inter: tekst i interfejs. Sora: nagłówki (ten sam krój co logo). */
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("../fonts/inter-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("../fonts/inter-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: "Sora";
  font-style: normal;
  font-weight: 100 800;
  font-display: swap;
  src: url("../fonts/sora-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Sora";
  font-style: normal;
  font-weight: 100 800;
  font-display: swap;
  src: url("../fonts/sora-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* 2. Zmienne — kolory i rozmiary w jednym miejscu */
:root {
  --navy-900: #071a33;
  --navy-800: #0b2545;
  --navy-700: #13355f;
  --blue-600: #1d6fd8;
  --blue-500: #3b82f6;
  --blue-100: #e3edfc;
  --green-500: #22a06b;
  --amber-500: #e5a50a;

  --ink: #0f1b2d;
  --muted: #52607a;
  --line: #e2e8f0;
  --surface: #ffffff;
  --surface-alt: #f4f7fb;

  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgb(15 27 45 / 6%), 0 8px 24px rgb(15 27 45 / 6%);
  --container: 1160px;
  --header-h: 68px;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-display: "Sora", var(--font);
}

/* 3. Baza */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
}
/* tracking zależny od rozmiaru: duży tekst ciaśniej, mały luźniej */
h1, h2, h3 { font-family: var(--font-display); line-height: 1.15; margin: 0 0 0.5em; text-wrap: balance; }
h1 { font-size: clamp(2rem, 1.3rem + 2.8vw, 3.2rem); font-weight: 650; line-height: 1.08; letter-spacing: -0.03em; }
h2 { font-size: clamp(1.6rem, 1.25rem + 1.5vw, 2.25rem); font-weight: 600; letter-spacing: -0.022em; }
h3 { font-size: 1.15rem; font-weight: 600; letter-spacing: -0.012em; line-height: 1.3; }
p { margin: 0 0 1em; text-wrap: pretty; }
a { color: var(--blue-600); }
img, svg { max-width: 100%; display: block; }
address { font-style: normal; }
:focus-visible { outline: 3px solid var(--blue-500); outline-offset: 2px; border-radius: 4px; }

/* Pojawianie się elementów przy przewijaniu (klasy nadaje main.js) */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s cubic-bezier(.2, .7, .2, 1); transition-delay: var(--delay, 0s); }
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* 4. Układ i elementy wspólne */
.container { width: min(100% - 2.5rem, var(--container)); margin-inline: auto; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}
.skip-link {
  position: absolute; left: 1rem; top: -100px; z-index: 100;
  background: var(--navy-800); color: #fff; padding: 0.6rem 1rem; border-radius: var(--radius-sm);
}
.skip-link:focus { top: 1rem; }

.eyebrow {
  font-size: 0.8rem; font-weight: 650; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--blue-600); margin-bottom: 0.75rem;
}

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  padding: 0.85rem 1.4rem; border: 1px solid transparent; border-radius: var(--radius-sm);
  background: var(--blue-600); color: #fff; font: inherit; font-weight: 600; font-size: 1rem;
  text-decoration: none; cursor: pointer;
  transition: background-color .15s, border-color .15s, transform .15s;
}
.btn:active { transform: scale(.97); transition-duration: 80ms; }
.btn-small { padding: 0.55rem 1rem; font-size: 0.95rem; }
.btn-ghost { background: transparent; color: #fff; border-color: rgb(255 255 255 / 35%); }

/* Logo: pliki źródłowe i zasady użycia w brand/ */
.brand { display: inline-flex; align-items: center; }
.brand img, .brand svg { height: 35px; width: auto; display: block; }

/* 5. Nagłówek */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgb(255 255 255 / 90%);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease;
}
.site-header.is-scrolled { border-bottom-color: var(--line); } /* klasę nadaje main.js */
@media (prefers-reduced-transparency: reduce) { .site-header { background: #fff; backdrop-filter: none; } }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); }
.site-nav { display: flex; align-items: center; gap: 2rem; }
.site-nav a:not(.btn) { color: var(--ink); text-decoration: none; font-weight: 500; font-size: 0.97rem; }

.nav-toggle {
  display: none; width: 44px; height: 44px; margin-right: -10px;
  background: none; border: 0; cursor: pointer; position: relative;
}
.nav-toggle-bar, .nav-toggle-bar::before, .nav-toggle-bar::after {
  position: absolute; left: 11px; width: 22px; height: 2px; border-radius: 2px;
  background: var(--ink); transition: transform .2s, background-color .2s;
}
.nav-toggle-bar { top: 21px; }
.nav-toggle-bar::before, .nav-toggle-bar::after { content: ""; left: 0; }
.nav-toggle-bar::before { top: -7px; }
.nav-toggle-bar::after { top: 7px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::before { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::after { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: absolute; top: var(--header-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    padding: 0.5rem 1.25rem 1.25rem;
    background: #fff; border-bottom: 1px solid var(--line); box-shadow: var(--shadow);
    opacity: 0; visibility: hidden; transform: translateY(-8px);
    transition: opacity .18s ease-in, transform .18s ease-in, visibility 0s .18s;
  }
  .site-nav.is-open {
    opacity: 1; visibility: visible; transform: none;
    transition: opacity .22s ease-out, transform .22s cubic-bezier(.2, .7, .2, 1), visibility 0s;
  }
  .site-nav a:not(.btn) { padding: 0.85rem 0; border-bottom: 1px solid var(--line); }
  .site-nav .btn { margin-top: 1rem; }
  /* Bez JS menu jest zawsze widoczne */
  .no-js .nav-toggle { display: none; }
  .no-js .site-nav { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; }
}

/* 6. Hero */
.hero {
  position: relative; overflow: hidden;
  color: #fff;
  background:
    radial-gradient(900px 500px at 85% 20%, rgb(59 130 246 / 28%), transparent 60%),
    linear-gradient(180deg, var(--navy-800), var(--navy-900));
}
.hero::before { /* delikatna siatka w tle */
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgb(255 255 255 / 4%) 1px, transparent 1px),
    linear-gradient(90deg, rgb(255 255 255 / 4%) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, #000 40%, transparent);
}
.hero-inner > * { min-width: 0; } /* długie treści nie rozpychają kolumn */
.hero-inner {
  position: relative;
  display: grid; grid-template-columns: 1.05fr 1fr; gap: 4rem; align-items: center;
  padding-block: clamp(4rem, 8vw, 7rem);
}
.hero .eyebrow { color: #8fb8f5; }
.hero h1 { color: #fff; max-width: 15ch; }
.lead { font-size: 1.15rem; color: #c5d3e8; max-width: 52ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2rem; }

.stats {
  display: grid; grid-template-columns: repeat(3, auto); justify-content: start; gap: 2.5rem;
  margin: 3rem 0 0; padding-top: 2rem; border-top: 1px solid rgb(255 255 255 / 12%);
}
.stats dt { font-family: var(--font-display); font-size: 1.75rem; font-weight: 650; letter-spacing: -0.03em; }
[data-count] { display: inline-block; text-align: right; } /* main.js zamraża szerokość wartości końcowej: „+” nie skacze */
.stats dd { margin: 0; font-size: 0.9rem; color: #9fb2cf; }

/* Intro: sieć sześcianów w tle hero + warstwa do odlotu sześcianu do logo (assets/js/intro.js) */
.intro-bg { position: absolute; inset: 0; width: 100%; height: 100%; display: block; pointer-events: none; }
.intro-overlay { position: fixed; inset: 0; width: 100vw; height: 100vh; pointer-events: none; z-index: 200; }
.intro .hero-visual .panel, .intro #logo-cube { opacity: 0; }

/* Makieta panelu */
.hero-visual { margin: 0; }
.panel {
  background: #fff; color: var(--ink); border-radius: var(--radius);
  box-shadow: 0 30px 60px rgb(0 0 0 / 35%);
  padding: 1.25rem; font-size: 0.85rem;
  transform: translateY(var(--intro-y, 0px)) perspective(1400px) rotateY(-6deg) rotateX(2deg);
}
.panel-head { display: flex; align-items: center; gap: 6px; padding-bottom: 0.9rem; border-bottom: 1px solid var(--line); }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--line); }
.panel-tabs { position: relative; display: flex; gap: 0.25rem; margin-left: auto; background: var(--surface-alt); padding: 3px; border-radius: 9px; }
.panel-tabs button {
  position: relative; z-index: 1;
  font: inherit; font-size: 0.8rem; font-weight: 600; color: var(--muted);
  background: none; border: 0; padding: 0.35rem 0.75rem; border-radius: 7px; cursor: pointer;
  transition: background-color .2s, color .2s;
}
.panel-tabs button[aria-selected="true"] { background: #fff; color: var(--blue-600); box-shadow: 0 1px 3px rgb(15 27 45 / 12%); }
/* z JS tło aktywnej zakładki to jeden wskaźnik, który przesuwa się między zakładkami */
.tab-indicator {
  position: absolute; top: 3px; bottom: 3px; left: 0; width: 0; border-radius: 7px;
  background: #fff; box-shadow: 0 1px 3px rgb(15 27 45 / 12%);
}
.tab-indicator.is-ready { transition: transform .32s cubic-bezier(.25, .8, .25, 1), width .32s cubic-bezier(.25, .8, .25, 1); }
.has-indicator button[aria-selected="true"] { background: none; box-shadow: none; }
.panel-view { animation: view-in .35s ease both; }
.panel-view .bar::after { animation: bar-grow .9s cubic-bezier(.2, .7, .2, 1) both; }
@keyframes view-in { from { opacity: 0; transform: translateY(6px); } }
@keyframes bar-grow { from { width: 0; } }
.status { font-size: 0.75rem; font-weight: 700; padding: 0.15rem 0.5rem; border-radius: 999px; }
.status.ok { background: #e3f5ec; color: #17794f; }
.status.warn { background: #fdf1d6; color: #9a6a00; }
.panel-kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.75rem; margin: 1rem 0; }
.panel-kpis div { background: var(--surface-alt); border-radius: var(--radius-sm); padding: 0.75rem; }
.panel-kpis span { display: block; color: var(--muted); font-size: 0.75rem; }
.panel-kpis strong { font-variant-numeric: tabular-nums; font-size: 1.2rem; font-weight: 700; white-space: nowrap; }
.panel-kpis .ok { color: var(--green-500); }
.panel-table { width: 100%; border-collapse: collapse; }
.panel-table th { text-align: left; font-weight: 600; color: var(--muted); font-size: 0.75rem; padding: 0.4rem 0.3rem; }
.panel-table td { padding: 0.55rem 0.3rem; border-top: 1px solid var(--line); white-space: nowrap; }
.panel-table td:last-child { width: 28%; }
.bar { display: block; height: 6px; border-radius: 6px; background: var(--blue-100); position: relative; overflow: hidden; }
.bar::after { content: ""; position: absolute; inset: 0 auto 0 0; width: var(--v); background: var(--blue-600); border-radius: inherit; }
.bar.low::after { background: var(--amber-500); }
.panel-foot { display: flex; gap: 0.5rem; margin-top: 1rem; }
.chip { background: var(--blue-100); color: var(--blue-600); font-weight: 600; font-size: 0.75rem; padding: 0.25rem 0.6rem; border-radius: 999px; }

@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; gap: 3rem; }
  .panel { transform: translateY(var(--intro-y, 0px)); }
}
@media (max-width: 520px) {
  .stats { grid-template-columns: repeat(3, 1fr); gap: 1rem; }
  .stats dt { font-size: 1.4rem; }
  .panel-table th:nth-child(3), .panel-table td:nth-child(3) { display: none; }
  .dot { display: none; }
  .panel { padding: 1rem; font-size: 0.8rem; }
  .panel-table td:first-child { white-space: normal; }
  .panel-kpis { gap: 0.5rem; }
  .panel-kpis div { padding: 0.6rem; }
  .panel-kpis strong { font-size: 1rem; }
  .panel-tabs { margin-left: 0; width: 100%; }
  .panel-tabs button { flex: 1; }
  .hero-actions .btn { width: 100%; }
}

/* 7. Sekcje */
.section { padding-block: clamp(4rem, 8vw, 6.5rem); }
.section-alt { background: var(--surface-alt); }
.section-head { max-width: 640px; margin-bottom: 3rem; }
.section-head p:last-child { color: var(--muted); font-size: 1.1rem; }

/* Karty obszarów */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 2rem; box-shadow: var(--shadow);
  transition: transform .2s, box-shadow .2s, border-color .2s;
}
.card.reveal { transition: opacity .6s ease, transform .6s cubic-bezier(.2, .7, .2, 1), border-color .2s; transition-delay: var(--delay, 0s); }
.card > p { color: var(--muted); }
.card-icon {
  width: 48px; height: 48px; display: grid; place-items: center;
  border-radius: 12px; background: var(--blue-100); margin-bottom: 1.5rem;
}
.card-icon svg { width: 26px; height: 26px; fill: none; stroke: var(--blue-600); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.checklist { list-style: none; padding: 1.25rem 0 0; margin: 1.25rem 0 0; border-top: 1px solid var(--line); }
.checklist li { position: relative; padding-left: 1.75rem; font-size: 0.95rem; margin-bottom: 0.6rem; }
.checklist li::before {
  content: ""; position: absolute; left: 0; top: 0.3em; width: 1.1em; height: 1.1em; border-radius: 50%;
  background: var(--blue-100) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231d6fd8' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 12.5l4 4 8-9'/%3E%3C/svg%3E") center / 70% no-repeat;
}

@media (max-width: 960px) { .cards { grid-template-columns: 1fr; max-width: 640px; } }

/* Kroki współpracy */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; counter-reset: none; }
.steps li { position: relative; padding-top: 1.5rem; border-top: 2px solid var(--line); }
.steps li::before { content: ""; position: absolute; top: -2px; left: 0; width: 48px; height: 2px; background: var(--blue-600); }
.step-no { display: block; font-family: var(--font-display); font-size: 0.85rem; font-weight: 600; color: var(--blue-600); margin-bottom: 0.75rem; }
.steps p { color: var(--muted); font-size: 0.97rem; }

@media (max-width: 960px) { .steps { grid-template-columns: repeat(2, 1fr); gap: 2.5rem 1.5rem; } }
@media (max-width: 520px) { .steps { grid-template-columns: 1fr; } }

/* Branże */
.industries { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.industries p:last-child { color: var(--muted); font-size: 1.1rem; }
.industry-list { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.industry-list li {
  display: flex; align-items: center; gap: 0.9rem;
  padding: 1.1rem 1.25rem; border-radius: var(--radius); background: var(--surface-alt);
  border: 1px solid var(--line); font-weight: 600; font-size: 1rem; line-height: 1.3;
  transition: border-color .2s, background-color .2s;
}
.industry-list svg {
  flex: none; width: 40px; height: 40px; padding: 8px; border-radius: 10px; background: #fff;
  fill: none; stroke: var(--blue-600); stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round;
  box-shadow: 0 1px 2px rgb(15 27 45 / 8%);
}
@media (max-width: 420px) { .industry-list { grid-template-columns: 1fr; } }
@media (max-width: 860px) { .industries { grid-template-columns: 1fr; gap: 2rem; } }

/* 8. Kontakt */
.contact { position: relative; overflow: hidden; background: var(--navy-800); color: #fff; }
/* tło: schemat bazy danych (assets/img/erd.svg, generator w brand/generator/erd.js) */
.contact-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .8; pointer-events: none; }
.contact-inner { position: relative; }
@media (max-width: 860px) { .contact-bg { display: none; } } /* na wąskim ekranie schemat skalowałby się do nieczytelnych fragmentów */
.contact .eyebrow { color: #8fb8f5; }
.contact-inner { display: grid; grid-template-columns: 1fr 1.1fr; gap: 4rem; align-items: start; }
.contact-info > p { color: #c5d3e8; font-size: 1.1rem; }
.contact-list { list-style: none; padding: 0; margin: 2rem 0 0; display: grid; gap: 1.25rem; }
.contact-list .label { display: block; font-size: 0.8rem; color: #8fa3c2; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 0.15rem; }
.contact-list a { color: #fff; font-weight: 600; text-decoration-color: rgb(255 255 255 / 40%); text-underline-offset: 3px; }

.contact-form { background: #fff; color: var(--ink); border-radius: var(--radius); padding: 2rem; box-shadow: 0 20px 50px rgb(0 0 0 / 25%); }
.field { display: grid; gap: 0.35rem; margin-bottom: 1.1rem; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.field label { font-weight: 600; font-size: 0.92rem; }
.optional { font-weight: 400; color: var(--muted); }
.field input, .field textarea {
  width: 100%; font: inherit; font-size: 1rem; color: var(--ink);
  padding: 0.75rem 0.9rem; border: 1px solid #cbd5e1; border-radius: var(--radius-sm); background: #fff;
  transition: border-color .15s, box-shadow .15s;
}
.field textarea { resize: vertical; min-height: 130px; }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--blue-600); box-shadow: 0 0 0 3px rgb(29 111 216 / 18%); }
.field [aria-invalid="true"] { border-color: #d14343; }
.hp { position: absolute; left: -9999px; }
.form-note { font-size: 0.82rem; color: var(--muted); }
.contact-form .btn { width: 100%; }
.form-status { margin: 1rem 0 0; font-size: 0.95rem; min-height: 1.5em; }
.form-status.is-error { color: #c23434; }
.form-status.is-ok { color: var(--green-500); }

@media (max-width: 860px) { .contact-inner { grid-template-columns: 1fr; gap: 2.5rem; } }
@media (max-width: 520px) { .field-row { grid-template-columns: 1fr; gap: 0; } .contact-form { padding: 1.5rem; } }

/* 9. Stopka */
.site-footer { background: var(--navy-900); color: #9fb2cf; font-size: 0.92rem; padding-block: 2.5rem; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 2rem; }
.footer-tagline { margin: 0.75rem 0 0; }
.footer-legal p { margin: 0 0 0.4rem; }
.footer-legal strong { color: #fff; }

/* 10. Najechanie kursorem — tylko na urządzeniach z myszą (na dotyku efekt „przykleja się” po stuknięciu) */
@media (hover: hover) {
  .btn:hover { background: #185fbb; }
  .btn-ghost:hover { background: rgb(255 255 255 / 8%); border-color: rgb(255 255 255 / 60%); }
  .site-nav a:not(.btn):hover { color: var(--blue-600); }
  .panel-tabs button:hover { color: var(--ink); }
  .panel-tabs button[aria-selected="true"]:hover { color: var(--blue-600); }
  .card:hover { transform: translateY(-3px); border-color: #c8d6ea; }
  .card.reveal.is-visible:hover { transition-delay: 0s; }
  .industry-list li:hover { border-color: #c8d6ea; background: #fff; }
}