/* led-ekran.com — tamna površina ugašenog LED modula, boje portova iz programa (hsl po portu),
   ćilibar = prsten na prvom kabinetu lanca u programu. Svetla sekcija = PDF tehnički list. */
:root {
  --black: #0b0d10;      /* ugašen modul */
  --surface: #13171c;    /* kabinet */
  --raise: #1a1f26;
  --line: #262d36;
  --text: #eef1f5;
  --mute: #8f99a8;
  --amber: #f5a04e;      /* prsten početka lanca */
  --amber-ink: #1b1206;
  --paper: #eef1f4;
  --ink: #161a20;
  --ink-mute: #5b6574;

  --display: 'Big Shoulders Display', 'Arial Narrow', sans-serif;
  --body: 'Hanken Grotesk', system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, Consolas, monospace;

  --wrap: 1200px;
  --gutter: clamp(16px, 4vw, 40px);
  --radius: 12px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  margin: 0;
  background: var(--black);
  color: var(--text);
  font: 400 17px/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; border-radius: 4px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }

.section-title {
  font: 800 clamp(34px, 4.6vw, 60px)/0.98 var(--display);
  letter-spacing: 0.005em;
  margin: 0 0 28px;
  max-width: 18ch;
}

/* ---------- dugmad ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 0 22px;
  background: var(--amber); color: var(--amber-ink);
  border: 1px solid var(--amber); border-radius: 999px;
  font: 700 16px/1 var(--body); text-decoration: none;
  transition: transform .15s ease, background-color .15s ease;
}
.btn:hover { background: #ffb469; transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--text); border-color: #3a434f; }
.btn-ghost:hover { background: var(--raise); }
.btn-small { min-height: 38px; padding: 0 16px; font-size: 14px; }
.text-link { color: var(--amber); font-weight: 600; text-decoration: none; }
.text-link:hover { text-decoration: underline; }

/* ---------- navigacija ---------- */
.nav {
  position: sticky; top: 0; z-index: 20;
  background: rgba(11, 13, 16, .82);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(38, 45, 54, .7);
}
.nav-row { display: flex; align-items: center; gap: 28px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-dots { display: grid; grid-template-columns: repeat(3, 7px); gap: 3px; }
.brand-dots i { width: 7px; height: 18px; border-radius: 2px; background: hsl(0, 70%, 55%); }
.brand-dots i:nth-child(2) { background: hsl(120, 70%, 50%); }
.brand-dots i:nth-child(3) { background: hsl(220, 80%, 60%); }
.brand-name { font: 800 24px/1 var(--display); letter-spacing: .01em; }
.brand-name span { color: var(--mute); font-weight: 600; }
.nav-links { display: flex; gap: 22px; margin-left: auto; }
.nav-links a { text-decoration: none; color: var(--mute); font-size: 15px; font-weight: 500; }
.nav-links a:hover { color: var(--text); }
.nav-end { display: flex; align-items: center; gap: 14px; }
.lang { font: 600 13px/1 var(--mono); text-decoration: none; color: var(--mute); padding: 6px 8px; border: 1px solid var(--line); border-radius: 6px; }
.lang:hover { color: var(--text); }

/* ---------- hero ---------- */
.hero {
  position: relative;
  padding: clamp(36px, 5vw, 64px) 0 clamp(56px, 8vw, 110px);
  background:
    radial-gradient(circle at 1px 1px, rgba(255, 255, 255, .055) 1px, transparent 1.6px) 0 0 / 9px 9px,
    var(--black);
}
.hero::after { /* tačkice modula se gase prema dnu */
  content: ""; position: absolute; inset: auto 0 0 0; height: 40%;
  background: linear-gradient(transparent, var(--black)); pointer-events: none;
}
.hero-head { position: relative; z-index: 1; }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(28px, 4vw, 56px); align-items: start; margin-top: clamp(28px, 3.4vw, 48px); }
.eyebrow { font: 600 13px/1.4 var(--mono); color: var(--amber); letter-spacing: .02em; margin: 0 0 18px; }
.hero h1 {
  font: 900 clamp(46px, 6.6vw, 90px)/0.9 var(--display);
  letter-spacing: 0.002em;
  margin: 0;
  max-width: 22ch;
}
.hero-copy { padding-top: 8px; }
.lead { font-size: clamp(17px, 1.5vw, 19px); color: #c9d0da; max-width: 34em; margin: 0 0 30px; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 30px; }
.hero-facts { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px 20px; color: var(--mute); font-size: 14px; }
.hero-facts li::before { content: ""; display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--amber); margin-right: 8px; vertical-align: 2px; }

/* živa šema */
.rig {
  background: linear-gradient(180deg, #161b21, #10141a);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px;
  box-shadow: 0 30px 80px -30px rgba(0, 0, 0, .8), inset 0 1px 0 rgba(255, 255, 255, .04);
}
.rig-bar { display: flex; flex-wrap: wrap; align-items: end; gap: 10px 14px; padding: 4px 4px 14px; }
.rig-label { display: block; width: 100%; font: 500 11px/1 var(--mono); color: var(--mute); margin-bottom: 6px; text-transform: uppercase; letter-spacing: .06em; }
.stepper { display: flex; flex-wrap: wrap; align-items: center; }
.stepper button, .hz button {
  width: 34px; height: 34px; border: 1px solid var(--line); background: var(--raise); color: var(--text);
  font: 600 18px/1 var(--body); cursor: pointer; border-radius: 8px;
}
.stepper button:hover, .hz button:hover { border-color: #46505d; }
.stepper output { min-width: 44px; text-align: center; font: 600 17px/1 var(--mono); }
.stepper .unit { font: 400 12px/1 var(--mono); color: var(--mute); margin: 0 8px 0 -6px; }
.rig-select select {
  height: 34px; padding: 0 10px; border-radius: 8px; border: 1px solid var(--line);
  background: var(--raise); color: var(--text); font: 500 14px/1 var(--mono);
}
.hz { display: flex; gap: 0; margin-left: auto; }
.hz button { width: auto; padding: 0 10px; font: 500 13px/1 var(--mono); border-radius: 0; color: var(--mute); }
.hz button:first-child { border-radius: 8px 0 0 8px; }
.hz button:last-child { border-radius: 0 8px 8px 0; }
.hz button + button { border-left: 0; }
.hz button[aria-checked="true"] { color: var(--amber-ink); background: var(--amber); border-color: var(--amber); }
.rig-stage {
  aspect-ratio: 16 / 9.4;
  display: grid; place-items: center;
  background: #0a0c0f; border-radius: 10px; border: 1px solid #1d232b;
  overflow: hidden;
}
.rig-stage svg { width: 100%; height: 100%; display: block; }
/* kabineti se pale redom duž lanca (svi portovi istovremeno), pa signal putuje kroz lanac */
.rig-stage .cab { animation: lit .5s ease-out both; }
@keyframes lit { from { fill-opacity: 0; stroke-opacity: .15; } }
.rig-stage .pulse { stroke-dasharray: 2.5 97.5; animation: travel 2.4s linear infinite; }
@keyframes travel { from { stroke-dashoffset: 100; } to { stroke-dashoffset: 0; } }
.rig-read { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin: 12px 0 0; background: var(--line); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.rig-read div { background: var(--surface); padding: 10px 12px; }
.rig-read dt { font: 500 11px/1 var(--mono); color: var(--mute); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 6px; }
.rig-read dd { margin: 0; font: 600 clamp(15px, 1.6vw, 19px)/1.1 var(--mono); white-space: nowrap; }
.rig-note { margin: 10px 4px 0; font-size: 13px; color: var(--mute); }

/* ---------- koraci ---------- */
.steps { padding: clamp(56px, 8vw, 100px) 0; border-top: 1px solid var(--line); }
.step-line { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; position: relative; }
.step-line::before { /* kabl koji spaja korake */
  content: ""; position: absolute; top: 22px; left: 22px; right: 22px; height: 2px;
  background: repeating-linear-gradient(90deg, #3a434f 0 10px, transparent 10px 16px);
}
.step-line li { position: relative; }
.step-n {
  position: relative; display: grid; place-items: center; width: 46px; height: 46px; border-radius: 50%;
  background: var(--black); border: 4px solid var(--amber); color: var(--text);
  font: 800 20px/1 var(--display); margin-bottom: 18px;
}
.step-line h3 { font: 800 30px/1 var(--display); margin: 0 0 10px; }
.step-line p { margin: 0; color: #c2c9d3; }

/* ---------- funkcije ---------- */
.features { padding: clamp(56px, 8vw, 100px) 0; background: linear-gradient(180deg, var(--black), #0e1115); }
.tabs { display: flex; flex-wrap: wrap; gap: 6px; padding: 6px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; width: fit-content; max-width: 100%; margin-bottom: 28px; }
.tabs button {
  border: 1px solid transparent; background: transparent; color: var(--mute);
  font: 600 15px/1 var(--body); padding: 10px 14px; border-radius: 8px; cursor: pointer;
}
.tabs button:hover { color: var(--text); }
.tabs button[aria-selected="true"] { color: var(--text); background: var(--raise); border-color: #3a434f; box-shadow: inset 0 -2px 0 var(--amber); }
.panel { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: clamp(24px, 4vw, 48px); align-items: start; }
.panel[hidden] { display: none; }
.panel-copy h3 { font: 800 clamp(28px, 3vw, 38px)/1 var(--display); margin: 6px 0 14px; }
.panel-copy p { color: #c2c9d3; margin: 0 0 18px; }
.ticks { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.ticks li { position: relative; padding-left: 26px; color: #d5dbe3; font-size: 15.5px; }
.ticks li::before { content: ""; position: absolute; left: 2px; top: .5em; width: 12px; height: 7px; border-left: 2px solid var(--amber); border-bottom: 2px solid var(--amber); transform: rotate(-45deg); }
.ticks li.no { color: var(--mute); }
.ticks li.no::before { border: 0; height: 2px; width: 12px; background: var(--mute); transform: none; top: .75em; }
.shot { margin: 0; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); background: #15181d; box-shadow: 0 24px 60px -30px rgba(0, 0, 0, .9); }
.panel:not([hidden]) .shot { animation: rise .35s ease both; }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } }

/* ---------- kapacitet ---------- */
.capacity { padding: clamp(56px, 8vw, 100px) 0; border-top: 1px solid var(--line); }
.cap-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(28px, 5vw, 64px); }
.formula { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 22px; margin: 0 0 30px; }
.f-lhs { font: 500 15px/1.2 var(--mono); color: var(--mute); }
.f-frac { display: inline-grid; justify-items: center; }
.f-num, .f-den {
  font: 800 clamp(40px, 6vw, 84px)/1 var(--display); padding: 0 6px;
  background: linear-gradient(90deg, hsl(0, 75%, 62%), hsl(50, 80%, 58%), hsl(140, 60%, 52%), hsl(200, 80%, 60%), hsl(275, 70%, 66%));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.f-num { border-bottom: 4px solid #3a434f; padding-bottom: 8px; }
.f-den { padding-top: 8px; }
.cap-table { width: 100%; border-collapse: collapse; font: 500 15px/1.2 var(--mono); margin-bottom: 18px; }
.cap-table th { text-align: left; font: 500 11px/1 var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--mute); padding: 0 0 10px; }
.cap-table td { padding: 12px 0; border-top: 1px solid var(--line); }
.cap-table td:first-child { color: var(--amber); }
.cap-note { color: var(--mute); font-size: 15px; margin: 0; }
.proc { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; align-self: start; }
.proc h3 { font: 800 26px/1 var(--display); margin: 0 0 16px; }
.proc-list { margin: 0 0 16px; display: grid; gap: 12px; }
.proc-list div { display: grid; grid-template-columns: 96px 1fr; gap: 12px; padding-top: 12px; border-top: 1px solid var(--line); }
.proc-list dt { font: 600 13px/1.5 var(--mono); color: var(--amber); }
.proc-list dd { margin: 0; font: 400 13.5px/1.5 var(--mono); color: #d5dbe3; }

/* ---------- PDF (svetlo) ---------- */
.sheet { background: var(--paper); color: var(--ink); padding: clamp(56px, 8vw, 110px) 0; overflow: hidden; }
.sheet-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(28px, 5vw, 64px); align-items: center; }
.sheet-copy > p { color: #3a4350; margin: 0 0 22px; }
.audiences { margin: 0 0 18px; display: grid; gap: 0; }
.audiences div { display: grid; grid-template-columns: 130px 1fr; gap: 14px; padding: 14px 0; border-top: 1px solid #cfd5dd; }
.audiences dt { font: 800 20px/1.2 var(--display); }
.audiences dd { margin: 0; color: #3a4350; font-size: 15.5px; }
.sheet-note { font: 400 13px/1.4 var(--mono); color: var(--ink-mute); margin: 0; }
.pages { position: relative; aspect-ratio: 4 / 3.2; }
.page {
  position: absolute; width: 74%; border-radius: 4px; background: #fff;
  box-shadow: 0 1px 0 rgba(0, 0, 0, .06), 0 22px 50px -18px rgba(22, 26, 32, .45);
  transition: transform .4s ease;
}
.page.p1 { left: 0; top: 4%; transform: rotate(-5deg); }
.page.p2 { left: 13%; top: 16%; transform: rotate(1.5deg); }
.page.p3 { left: 26%; top: 30%; transform: rotate(5deg); }
.pages:hover .p1 { transform: rotate(-7deg) translate(-12px, -6px); }
.pages:hover .p3 { transform: rotate(7deg) translate(12px, 8px); }

/* ---------- dokaz ---------- */
.proof { padding: clamp(40px, 6vw, 72px) 0; border-bottom: 1px solid var(--line); }
.proof-row { display: grid; grid-template-columns: auto 1fr; gap: clamp(20px, 4vw, 56px); align-items: center; }
.proof-big { font: 900 clamp(64px, 10vw, 140px)/.85 var(--display); color: var(--amber); margin: 0; white-space: nowrap; }
.proof-row p:last-child { margin: 0; color: #c9d0da; max-width: 40em; }

/* ---------- cena ---------- */
.pricing { padding: clamp(56px, 8vw, 100px) 0; }
.price-grid { display: grid; grid-template-columns: 1fr 1.25fr; gap: 20px; align-items: stretch; }
.plan { display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 28px; }
.plan .ticks { margin: 22px 0 28px; flex: 1; }
.plan .btn { align-self: flex-start; }
.plan-main { border-color: var(--amber); background: linear-gradient(180deg, #1c1912, var(--surface) 55%); }
.plan-name { font: 600 13px/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--mute); margin: 0 0 12px; }
.plan-main .plan-name { color: var(--amber); }
.plan-price { font: 900 clamp(44px, 5vw, 64px)/1 var(--display); margin: 0 0 8px; }
.plan-price span { font: 500 16px/1 var(--body); color: var(--mute); }
.plan-sub { margin: 0; color: var(--mute); }
.android { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 24px; margin-top: 20px; padding: 18px 22px; border: 1px dashed #3a434f; border-radius: 12px; }
.android p { margin: 0; color: #c9d0da; }
.play-badge { display: block; line-height: 0; }
.play-badge img { height: 58px; width: auto; margin: -9px -10px; } /* zvanični Google bedž ima ugrađenu providnu marginu */

/* ---------- pitanja ---------- */
.faq { padding: clamp(56px, 8vw, 100px) 0; border-top: 1px solid var(--line); }
.faq-wrap { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: clamp(24px, 4vw, 48px); }
.faq-list details { border-top: 1px solid var(--line); }
.faq-list details:last-child { border-bottom: 1px solid var(--line); }
.faq-list summary { cursor: pointer; list-style: none; padding: 20px 40px 20px 0; position: relative; font: 600 18px/1.35 var(--body); }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; right: 4px; top: 16px; font: 400 26px/1 var(--mono); color: var(--amber); transition: transform .2s ease; }
.faq-list details[open] summary::after { transform: rotate(45deg); }
.faq-list details p { margin: 0 0 22px; color: #c2c9d3; max-width: 46em; }

/* ---------- kraj ---------- */
.last { padding: clamp(56px, 8vw, 100px) 0; background: radial-gradient(circle at 1px 1px, rgba(255, 255, 255, .05) 1px, transparent 1.6px) 0 0 / 9px 9px; border-top: 1px solid var(--line); }
.last-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px; }
.last h2 { font: 900 clamp(36px, 5vw, 68px)/.95 var(--display); margin: 0; max-width: 16ch; }

.foot { padding: 36px 0 48px; border-top: 1px solid var(--line); color: var(--mute); font-size: 14px; }
.foot-row p { margin: 0 0 8px; }
.foot a { color: var(--text); text-decoration: none; }
.foot a:hover { text-decoration: underline; }
.fine { font-size: 12.5px; opacity: .8; }

/* ---------- uži ekrani ---------- */
@media (max-width: 1020px) {
  .nav-links { display: none; }
  .nav-end { margin-left: auto; }
  .hero-grid, .panel, .cap-grid, .sheet-grid, .faq-wrap, .price-grid { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 700px) {
  body { font-size: 16px; }
  .step-line { grid-template-columns: 1fr; gap: 28px; }
  .step-line::before { top: 22px; bottom: 22px; left: 22px; right: auto; width: 2px; height: auto; background: repeating-linear-gradient(180deg, #3a434f 0 10px, transparent 10px 16px); }
  .step-line li { padding-left: 66px; }
  .step-n { position: absolute; left: 0; top: 0; }
  .rig-read { grid-template-columns: repeat(2, 1fr); }
  .hz { margin-left: 0; }
  .proof-row { grid-template-columns: 1fr; }
  .audiences div { grid-template-columns: 1fr; gap: 4px; }
  .proc-list div { grid-template-columns: 1fr; gap: 2px; }
  .brand-name span { display: none; }
  .pages { aspect-ratio: 4 / 3.6; }
}

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