/* ExamHub LMS – strona produktowa. Tło statyczne (bez animacji). */
:root {
  --bg: #0a0e1a;
  --bg-2: #0f1528;
  --ink: #eef2fb;
  --muted: #a3afc8;
  --line: rgba(255, 255, 255, .09);
  --glass: rgba(16, 22, 42, .62);
  --violet: #7b5cff;
  --cyan: #4cc9f0;
  --pink: #ff4fd8;
  --lime: #3ddc97;
  --amber: #ffc23d;
  --radius: 18px;
  --wrap: 1200px;
  --head: "Bricolage Grotesque", system-ui, sans-serif;
  --body: "Source Sans 3", system-ui, -apple-system, "Segoe UI", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 17px/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--cyan); text-decoration: none; }
a:hover { color: #8fe0ff; }
h1, h2, h3 { font-family: var(--head); line-height: 1.12; margin: 0 0 .5em; letter-spacing: -.01em; }
h2 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); font-weight: 800; }
h3 { font-size: 1.12rem; font-weight: 700; }
p { margin: 0 0 1em; }
.muted { color: var(--muted); }
.wrap { width: min(var(--wrap), 100% - 32px); margin-inline: auto; }
.narrow { width: min(820px, 100% - 32px); }

/* ---------- Tło: rozmyte poświaty + płytka drukowana (statyczne) */
.bg { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
.bg::after {
  content: ""; position: absolute; inset: 0;
  background: url("../img/bg-circuit.svg") center / cover no-repeat;
  opacity: .9;
}
.bg span { position: absolute; border-radius: 50%; filter: blur(90px); opacity: .55; }
.bg span:nth-child(1) { width: 46vw; height: 46vw; background: #3b2bd9; top: -12vw; left: -10vw; }
.bg span:nth-child(2) { width: 38vw; height: 38vw; background: #0e8fb8; top: 30vh; right: -12vw; }
.bg span:nth-child(3) { width: 34vw; height: 34vw; background: #7b1fa2; bottom: -14vw; left: 25vw; opacity: .45; }
.bg span:nth-child(4) { width: 22vw; height: 22vw; background: #d61f9c; top: 8vh; right: 18vw; opacity: .22; }

/* ---------- Przyciski */
.btn {
  display: inline-flex; align-items: center; gap: .5em;
  padding: .7em 1.2em; border-radius: 10px; border: 1px solid transparent;
  font: 700 1rem/1.2 var(--body); cursor: pointer; white-space: nowrap;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-sm { padding: .5em .9em; font-size: .92rem; }
.btn-lg { padding: .9em 1.5em; font-size: 1.06rem; }
.btn-glow {
  background: linear-gradient(135deg, var(--violet), var(--cyan));
  color: #06101f;
  box-shadow: 0 8px 28px -8px rgba(123, 92, 255, .8);
}
.btn-glow:hover { color: #06101f; box-shadow: 0 12px 34px -8px rgba(76, 201, 240, .85); }
.btn-ghost { background: rgba(255, 255, 255, .05); border-color: rgba(255, 255, 255, .18); color: var(--ink); }
.btn-ghost:hover { background: rgba(255, 255, 255, .1); color: #fff; }
.btn-dark { background: #0a0e1a; color: #fff; }
.btn-dark:hover { color: #fff; box-shadow: 0 10px 30px -10px rgba(0, 0, 0, .7); }

/* ---------- Nawigacja */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10, 14, 26, .72);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-in { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: .55em; color: #fff; font: 800 1.25rem var(--head); }
.brand:hover { color: #fff; }
.brand em { font-style: normal; background: linear-gradient(90deg, var(--cyan), var(--pink)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.brand-ico {
  display: grid; place-items: center; width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, var(--violet), var(--cyan)); color: #fff; font-size: 1.1rem;
}
.menu { display: flex; align-items: center; gap: 1.4rem; }
.menu a:not(.btn) { color: var(--muted); font-weight: 600; font-size: .96rem; }
.menu a:not(.btn):hover { color: #fff; }
.nav-toggle { display: none; background: none; border: 1px solid var(--line); color: #fff; border-radius: 10px; width: 42px; height: 42px; font-size: 1.4rem; cursor: pointer; }

/* ---------- Hero */
.hero { padding: clamp(48px, 8vw, 96px) 0 40px; }
.hero-grid { display: grid; grid-template-columns: 1.02fr 1fr; gap: clamp(32px, 4vw, 56px); align-items: center; }
.chips { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1.4rem; }
.chip {
  display: inline-flex; align-items: center; gap: .45em;
  padding: .38em .85em; border-radius: 999px; font-size: .88rem; font-weight: 600;
  background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .14); color: #dfe6f5;
}
.chip i { color: var(--cyan); }
.chip:nth-child(2) i { color: var(--lime); }
.chip:nth-child(3) i { color: var(--pink); }
h1 { font-size: clamp(2.4rem, 5.2vw, 4.1rem); font-weight: 800; margin-bottom: .45em; }
.grad-a { background: linear-gradient(90deg, var(--cyan), var(--violet)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.grad-b { background: linear-gradient(90deg, var(--pink), var(--amber)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: clamp(1.06rem, 1.5vw, 1.2rem); color: #c7d0e4; max-width: 38em; }
.cta { display: flex; flex-wrap: wrap; gap: .75rem; margin: 1.6rem 0 1rem; }
.fine { font-size: .9rem; color: var(--muted); }

.hero-shot { position: relative; }
.browser {
  border-radius: 14px; overflow: hidden;
  background: #121933; border: 1px solid rgba(255, 255, 255, .12);
  box-shadow: 0 30px 80px -20px rgba(0, 0, 0, .75), 0 0 0 1px rgba(123, 92, 255, .15), 0 0 60px -10px rgba(76, 201, 240, .35);
}
.browser-bar { display: flex; align-items: center; gap: 7px; padding: 10px 14px; background: #0d1329; border-bottom: 1px solid var(--line); }
.browser-bar > span { width: 11px; height: 11px; border-radius: 50%; background: #ff5f57; }
.browser-bar > span:nth-child(2) { background: #febc2e; }
.browser-bar > span:nth-child(3) { background: #28c840; }
.url {
  flex: 1; margin-left: 10px; padding: 4px 12px; border-radius: 8px; background: rgba(255, 255, 255, .05);
  font-size: .8rem; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.url i { color: var(--lime); margin-right: 4px; }
.tilt { transform: perspective(1600px) rotateY(-6deg) rotateX(2deg); }
.float-card {
  position: absolute; display: flex; align-items: center; gap: .7rem;
  padding: .7rem 1rem; border-radius: 14px;
  background: rgba(14, 20, 40, .9); border: 1px solid rgba(255, 255, 255, .14);
  box-shadow: 0 18px 40px -12px rgba(0, 0, 0, .7);
  backdrop-filter: blur(8px);
}
.float-card i { font-size: 1.7rem; }
.float-card strong { display: block; font-size: .95rem; }
.float-card span { display: block; font-size: .8rem; color: var(--muted); }
.fc-1 { left: -26px; bottom: -22px; }
.fc-1 i { color: var(--lime); }
.fc-1 strong { color: var(--lime); }
.fc-2 { right: -14px; top: -24px; }
.fc-2 i { color: #4f9dff; }

/* ---------- Liczby */
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  margin-top: 56px; border-radius: var(--radius); overflow: hidden;
  background: var(--line); border: 1px solid var(--line);
}
.stat { padding: 1.4rem 1.5rem; background: rgba(12, 17, 34, .78); }
.stat b { display: block; font: 800 clamp(1.6rem, 2.6vw, 2.2rem)/1.1 var(--head); margin-bottom: .3rem; }
.stat:nth-child(1) b { color: var(--cyan); }
.stat:nth-child(2) b { color: var(--pink); }
.stat:nth-child(3) b { color: var(--amber); }
.stat:nth-child(4) b { color: var(--lime); }
.stat span { color: var(--muted); font-size: .95rem; }

/* ---------- Sekcje */
.section { padding: clamp(64px, 9vw, 110px) 0; }
.section-alt { background: linear-gradient(180deg, rgba(15, 21, 40, 0), rgba(15, 21, 40, .65) 18%, rgba(15, 21, 40, .65) 82%, rgba(15, 21, 40, 0)); }
.head { text-align: center; max-width: 760px; margin: 0 auto 48px; }
.head p { color: var(--muted); font-size: 1.08rem; }
.eyebrow {
  display: inline-block; margin-bottom: .8rem; padding: .25em .8em; border-radius: 999px;
  font-size: .78rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
  color: var(--cyan); background: rgba(76, 201, 240, .1); border: 1px solid rgba(76, 201, 240, .3);
}

/* ---------- Karty funkcji */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.cards-sm { grid-template-columns: repeat(4, 1fr); }
.card {
  --c: var(--cyan);
  position: relative; padding: 1.5rem; border-radius: var(--radius);
  background: var(--glass); border: 1px solid var(--line);
  backdrop-filter: blur(6px);
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.card::before {
  content: ""; position: absolute; inset: 0 0 auto; height: 3px; border-radius: var(--radius) var(--radius) 0 0;
  background: linear-gradient(90deg, var(--c), transparent);
}
.card:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--c) 45%, transparent); box-shadow: 0 18px 40px -18px var(--c); }
.card > i {
  display: grid; place-items: center; width: 48px; height: 48px; margin-bottom: 1rem; border-radius: 12px;
  font-size: 1.4rem; color: var(--c);
  background: color-mix(in srgb, var(--c) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--c) 35%, transparent);
}
.card p { color: var(--muted); font-size: .97rem; margin: 0; }
.cards-sm .card { padding: 1.25rem; }
.cards-sm .card > i { width: 42px; height: 42px; font-size: 1.2rem; }
.c-cyan { --c: var(--cyan); }
.c-violet { --c: #9b82ff; }
.c-pink { --c: var(--pink); }
.c-lime { --c: var(--lime); }
.c-amber { --c: var(--amber); }

/* ---------- Zrzuty ekranu */
.tabs { display: flex; flex-wrap: wrap; justify-content: center; gap: .5rem; margin-bottom: 28px; }
.tabs button {
  padding: .5em 1em; border-radius: 999px; cursor: pointer;
  font: 600 .93rem var(--body); color: var(--muted);
  background: rgba(255, 255, 255, .04); border: 1px solid var(--line);
  transition: all .15s ease;
}
.tabs button:hover { color: #fff; border-color: rgba(255, 255, 255, .25); }
.tabs button[aria-selected="true"] { color: #06101f; background: linear-gradient(135deg, var(--violet), var(--cyan)); border-color: transparent; }
.shot-stage { margin: 0 auto; max-width: 1080px; }
.shot-stage img { transition: opacity .2s ease; }
.shot-stage img.loading { opacity: .35; }
.shot-stage figcaption { text-align: center; color: var(--muted); margin-top: 1.2rem; max-width: 760px; margin-inline: auto; }
.shot-stage figcaption strong { color: var(--ink); }

/* ---------- Import */
.split { display: grid; grid-template-columns: 1fr 1.05fr; gap: clamp(32px, 5vw, 64px); align-items: center; }
.ticks { list-style: none; padding: 0; margin: 1.2rem 0 0; }
.ticks li { position: relative; padding-left: 1.9rem; margin-bottom: .7rem; color: #c7d0e4; }
.ticks li::before {
  content: "\F26E"; font-family: "bootstrap-icons"; position: absolute; left: 0; top: .05em;
  color: var(--lime); font-size: 1.15rem;
}
.ticks b { color: #fff; }
.ticks.small li { font-size: .95rem; margin-bottom: .45rem; }

.doc-demo { display: grid; grid-template-columns: 1fr auto .72fr; align-items: center; gap: 14px; }
.doc { border-radius: 12px; overflow: hidden; background: #fff; color: #1d2330; box-shadow: 0 24px 60px -18px rgba(0, 0, 0, .8); }
.doc-bar { padding: 8px 12px; background: #2b579a; color: #fff; font-size: .82rem; font-weight: 600; }
.doc-body { padding: 16px 18px 6px; font: 400 .9rem/1.5 Calibri, "Segoe UI", sans-serif; }
.doc-body .q { font-weight: 700; margin-bottom: .2rem; }
.doc-body ol { margin: 0 0 .8rem; padding-left: 1.4rem; }
.doc-body mark { background: none; color: #00a651; font-weight: 700; }
.arrow { font-size: 2rem; color: var(--cyan); }
.report { padding: 1rem; border-radius: 14px; background: var(--glass); border: 1px solid rgba(61, 220, 151, .4); }
.r-title { font-weight: 700; color: var(--lime); margin-bottom: .7rem; }
.r-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.r-grid div { padding: .55rem; border-radius: 10px; background: rgba(255, 255, 255, .05); text-align: center; }
.r-grid b { display: block; font: 800 1.3rem var(--head); }
.r-grid div:nth-child(1) b { color: var(--cyan); }
.r-grid div:nth-child(2) b { color: #9b82ff; }
.r-grid div:nth-child(3) b { color: var(--lime); }
.r-grid div:nth-child(4) b { color: var(--amber); }
.r-grid span { font-size: .78rem; color: var(--muted); }

/* ---------- Kroki */
.steps { list-style: none; padding: 0; margin: 0 0 32px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: s; }
.steps li { position: relative; padding: 1.5rem; border-radius: var(--radius); background: var(--glass); border: 1px solid var(--line); }
.steps p { color: var(--muted); margin: 0; font-size: .97rem; }
.num {
  display: grid; place-items: center; width: 44px; height: 44px; margin-bottom: 1rem; border-radius: 50%;
  font: 800 1.15rem var(--head); color: #06101f;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
}
.steps li:nth-child(2) .num { background: linear-gradient(135deg, var(--violet), var(--pink)); }
.steps li:nth-child(3) .num { background: linear-gradient(135deg, var(--pink), var(--amber)); }
.steps li:nth-child(4) .num { background: linear-gradient(135deg, var(--amber), var(--lime)); }

.two { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.panel { padding: 1.8rem; border-radius: var(--radius); background: var(--glass); border: 1px solid var(--line); }
.panel h3 { font-size: 1.3rem; display: flex; align-items: center; gap: .5em; }
.panel h3 i { color: var(--cyan); }
.panel-grad {
  background: linear-gradient(140deg, rgba(123, 92, 255, .35), rgba(76, 201, 240, .18) 60%, rgba(255, 79, 216, .2));
  border-color: rgba(123, 92, 255, .45);
}
.panel-grad h3 i { color: #fff; }

/* ---------- Dla kogo */
.pills { display: flex; flex-wrap: wrap; justify-content: center; gap: .7rem; }
.pills span {
  display: inline-flex; align-items: center; gap: .5em;
  padding: .7em 1.2em; border-radius: 999px; font-weight: 600;
  background: var(--glass); border: 1px solid var(--line);
}
.pills span:nth-child(5n+1) i { color: var(--amber); }
.pills span:nth-child(5n+2) i { color: var(--cyan); }
.pills span:nth-child(5n+3) i { color: var(--pink); }
.pills span:nth-child(5n+4) i { color: var(--lime); }
.pills span:nth-child(5n+5) i { color: #9b82ff; }

/* ---------- Autor */
.author {
  display: grid; grid-template-columns: auto 1fr; gap: 2.4rem; align-items: center;
  max-width: 920px; margin: 0 auto; padding: 2.2rem; border-radius: 24px;
  background: var(--glass); border: 1px solid var(--line);
}
.author img {
  width: 160px; height: 160px; border-radius: 50%; object-fit: cover;
  border: 4px solid transparent;
  background: linear-gradient(var(--bg), var(--bg)) padding-box, linear-gradient(135deg, var(--violet), var(--cyan), var(--pink)) border-box;
}
.author .cta { margin-bottom: 0; }

/* ---------- FAQ */
details {
  margin-bottom: 12px; border-radius: 14px; background: var(--glass); border: 1px solid var(--line);
  overflow: hidden;
}
details[open] { border-color: rgba(76, 201, 240, .35); }
summary {
  list-style: none; cursor: pointer; padding: 1.05rem 3rem 1.05rem 1.3rem; position: relative;
  font-weight: 700; font-size: 1.04rem;
}
summary::-webkit-details-marker { display: none; }
summary::after {
  content: "\F64D"; font-family: "bootstrap-icons"; position: absolute; right: 1.2rem; top: 50%; transform: translateY(-50%);
  color: var(--cyan); transition: transform .2s ease;
}
details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
details p { padding: 0 1.3rem 1.1rem; margin: 0; color: var(--muted); }

/* ---------- CTA */
.cta-band {
  display: flex; align-items: center; justify-content: space-between; gap: 2rem; flex-wrap: wrap;
  margin: 20px 0 80px; padding: clamp(28px, 4vw, 48px); border-radius: 24px;
  background: linear-gradient(120deg, var(--violet), var(--cyan) 55%, var(--lime));
  color: #06101f;
  box-shadow: 0 30px 70px -30px rgba(76, 201, 240, .8);
}
.cta-band h2 { margin-bottom: .25em; }
.cta-band p { margin: 0; font-size: 1.08rem; font-weight: 600; opacity: .85; }

/* ---------- Stopka + CREATED BY */
.foot { border-top: 1px solid var(--line); background: rgba(8, 11, 22, .8); padding: 26px 0; font-size: .92rem; color: var(--muted); }
.foot-in { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.foot-links a { color: var(--muted); }
.foot-links a:hover { color: #fff; }

.credit { position: relative; display: inline-block; outline: none; }
.credit-badge {
  display: inline-flex; align-items: center; gap: .5rem; padding: .3rem .8rem .3rem .3rem; border-radius: 999px;
  background: rgba(255, 255, 255, .05); border: 1px solid rgba(255, 255, 255, .15); cursor: default;
}
.credit-mono {
  display: grid; place-items: center; width: 26px; height: 26px; border-radius: 50%;
  font: 800 .72rem var(--head); color: #06101f; background: linear-gradient(135deg, var(--violet), var(--cyan));
}
.credit-text { font-size: .72rem; font-weight: 700; letter-spacing: .14em; color: #dfe6f5; }
.credit-card {
  position: absolute; right: 0; bottom: calc(100% + 12px);
  display: flex; align-items: center; gap: .9rem; padding: .9rem 1.2rem .9rem .9rem;
  border-radius: 22px; white-space: nowrap;
  background: rgba(16, 22, 42, .97); border: 1px solid rgba(255, 255, 255, .16);
  box-shadow: 0 20px 50px -14px rgba(0, 0, 0, .85), 0 0 30px -10px rgba(123, 92, 255, .7);
  opacity: 0; visibility: hidden; transform: translateY(6px);
  transition: opacity .18s ease, transform .18s ease, visibility .18s;
}
.credit:hover .credit-card, .credit:focus-within .credit-card { opacity: 1; visibility: visible; transform: none; }
.credit-card picture { flex: 0 0 64px; }
.credit-card img { width: 64px; height: 64px; border-radius: 50%; object-fit: cover; border: 2px solid var(--cyan); }
.credit-info strong { display: block; color: #fff; font-size: 1rem; }
.credit-info a { font-size: .88rem; }

/* ---------- Responsywność */
@media (max-width: 1100px) {
  .menu { gap: 1rem; }
  .menu a:not(.btn) { font-size: .9rem; }
  .cards-sm { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 980px) {
  .nav-toggle { display: grid; place-items: center; }
  .menu {
    position: absolute; top: 68px; left: 0; right: 0; display: none;
    flex-direction: column; align-items: stretch; gap: 0; padding: 8px 16px 18px;
    background: rgba(10, 14, 26, .97); border-bottom: 1px solid var(--line);
  }
  .menu.open { display: flex; }
  .menu a:not(.btn) { padding: .75rem .25rem; border-bottom: 1px solid var(--line); font-size: 1rem; }
  .menu .btn { margin-top: 12px; justify-content: center; }
  .hero-grid, .split { grid-template-columns: 1fr; }
  .tilt { transform: none; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .cards, .cards-sm, .steps, .two { grid-template-columns: 1fr; }
  .fc-1 { left: 8px; bottom: -28px; }
  .fc-2 { right: 8px; top: -30px; }
  .float-card { padding: .55rem .8rem; }
  .doc-demo { grid-template-columns: 1fr; }
  .arrow { justify-self: center; transform: rotate(90deg); }
  .author { grid-template-columns: 1fr; text-align: center; padding: 1.6rem; }
  .author img { margin: 0 auto; }
  .author .cta { justify-content: center; }
  .btn { white-space: normal; }
  .foot-in { flex-direction: column; text-align: center; }
  .credit-card { right: 50%; transform: translate(50%, 6px); }
  .credit:hover .credit-card, .credit:focus-within .credit-card { transform: translate(50%, 0); }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}