/* ============================================================
   eth-proof-824 — trajna web provjera toka
   vlastiti dizajn: tamni "network terminal", ETH plava / ljubičasta / tirkiz
   ============================================================ */

/* ---------- fontovi (lokalno ugrađeni, latin + latin-ext) ---------- */
@font-face {
  font-family: 'SpaceGrotesk';
  src: url('fonts/space-grotesk-latin.woff2') format('woff2');
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'SpaceGrotesk';
  src: url('fonts/space-grotesk-latinext.woff2') format('woff2');
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0100-02AF, U+0304, U+0308, U+0329, 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: 'JetBrainsMono';
  src: url('fonts/jetbrains-mono-latin.woff2') format('woff2');
  font-weight: 100 800;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'JetBrainsMono';
  src: url('fonts/jetbrains-mono-latinext.woff2') format('woff2');
  font-weight: 100 800;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0100-02AF, U+0304, U+0308, U+0329, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* ---------- osnovno ---------- */
:root {
  --bg: #05070d;
  --bg-soft: #0a0f1d;
  --surface: #0c1222;
  --line: rgba(140, 160, 200, 0.14);
  --line-strong: rgba(140, 160, 200, 0.28);
  --text: #e8edff;
  --dim: #8ca0c8;
  --faint: #5b6b8f;
  --eth: #627eea;
  --violet: #8b5cf6;
  --teal: #2de2c8;
  --teal-dim: #1d8f80;
  --radius: 18px;
  --font-display: 'SpaceGrotesk', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrainsMono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  --header-h: 64px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-display);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { margin: 0; line-height: 1.15; font-weight: 700; letter-spacing: -0.02em; }
p { margin: 0; }
section { scroll-margin-top: calc(var(--header-h) + 12px); }
::selection { background: rgba(45, 226, 200, 0.28); color: #fff; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  height: var(--header-h);
  background: rgba(5, 7, 13, 0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  transition: background 0.3s ease;
}
.site-header.scrolled { background: rgba(5, 7, 13, 0.92); }
.header-inner {
  max-width: 1160px; margin: 0 auto; padding: 0 20px;
  height: 100%; display: flex; align-items: center; gap: 18px;
}
.brand { display: flex; align-items: center; gap: 10px; margin-right: auto; }
.brand-mark { width: 28px; height: 28px; }
.brand-mark rect { fill: none; stroke: rgba(140,160,200,0.35); stroke-width: 1.5; }
.brand-name { font-family: var(--font-mono); font-size: 14px; font-weight: 700; letter-spacing: -0.01em; }
.site-nav { display: none; gap: 6px; }
.site-nav a {
  padding: 8px 14px; border-radius: 999px;
  font-size: 14px; font-weight: 500; color: var(--dim);
  transition: color 0.2s ease, background 0.2s ease;
}
.site-nav a:hover, .site-nav a.active { color: var(--text); background: rgba(140,160,200,0.1); }
.header-cta { margin-left: auto; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px; border-radius: 999px;
  font-size: 14px; font-weight: 600; line-height: 1;
  border: 1px solid transparent; cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}
.btn-primary {
  background: linear-gradient(135deg, var(--eth), var(--violet));
  color: #fff;
  box-shadow: 0 8px 28px -10px rgba(98, 126, 234, 0.7);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 34px -10px rgba(98, 126, 234, 0.85); }
.btn-ghost {
  border-color: var(--line-strong); color: var(--text);
  background: rgba(140, 160, 200, 0.06);
}
.btn-ghost:hover { border-color: var(--teal); color: var(--teal); transform: translateY(-2px); }
.nav-toggle {
  display: inline-flex; flex-direction: column; justify-content: center; gap: 5px;
  width: 42px; height: 42px; padding: 10px;
  background: rgba(140,160,200,0.08); border: 1px solid var(--line); border-radius: 12px;
  cursor: pointer;
}
.nav-toggle span { display: block; height: 2px; width: 100%; background: var(--text); border-radius: 2px; transition: transform 0.25s ease, opacity 0.25s ease; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* mobilni nav — klizni panel */
.site-nav.open {
  display: flex; flex-direction: column; gap: 4px;
  position: absolute; top: calc(var(--header-h) + 4px); left: 12px; right: 12px;
  padding: 12px; background: rgba(8, 11, 20, 0.97); border: 1px solid var(--line);
  border-radius: 16px; backdrop-filter: blur(16px);
  box-shadow: 0 24px 60px rgba(0,0,0,0.5);
}
.site-nav.open a { padding: 12px 14px; border-radius: 10px; }

/* ---------- hero ---------- */
.hero { position: relative; overflow: hidden; padding: 64px 20px 0; }
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.grid-lines {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(140,160,200,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140,160,200,0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 20%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 50% 20%, #000 30%, transparent 75%);
}
.glow { position: absolute; border-radius: 50%; filter: blur(80px); opacity: 0.5; }
.glow-a { width: 480px; height: 480px; left: -140px; top: -120px; background: radial-gradient(circle, rgba(98,126,234,0.5), transparent 65%); }
.glow-b { width: 420px; height: 420px; right: -120px; top: 60px; background: radial-gradient(circle, rgba(45,226,200,0.35), transparent 65%); }

.hero-inner { position: relative; max-width: 860px; margin: 0 auto; text-align: center; }
.term-line {
  font-family: var(--font-mono); font-size: 13px; color: var(--dim);
  background: rgba(140,160,200,0.06); border: 1px solid var(--line);
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 14px; border-radius: 10px; margin-bottom: 22px;
}
.term-line .prompt { color: var(--teal); }
.cursor { display: inline-block; width: 8px; height: 15px; background: var(--teal); animation: blink 1.1s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.eyebrow {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.22em;
  color: var(--teal); margin-bottom: 18px;
}
.hero h1 { font-size: clamp(38px, 8vw, 76px); margin-bottom: 22px; }
.grad-text {
  background: linear-gradient(100deg, var(--eth), var(--violet) 55%, var(--teal));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-lead { font-size: 17px; color: var(--dim); max-width: 620px; margin: 0 auto 30px; }
.hero-actions { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; margin-bottom: 34px; }
.status-badges {
  list-style: none; margin: 0 0 46px; padding: 0;
  display: flex; justify-content: center; gap: 10px; flex-wrap: wrap;
}
.status-badges li {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 12px; color: var(--dim);
  padding: 7px 13px; border: 1px solid var(--line); border-radius: 999px;
  background: rgba(140,160,200,0.05);
}
.status-badges b { color: var(--teal); font-weight: 700; }
.badge-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--dot, var(--teal)); box-shadow: 0 0 10px var(--dot, var(--teal)); animation: pulse 2.4s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: 0.45; } }

/* ---------- pipeline (centrepiece) ---------- */
.pipeline-wrap {
  position: relative; max-width: 980px; margin: 0 auto;
  padding: 22px 18px 40px;
  border: 1px solid var(--line); border-radius: 24px;
  background: linear-gradient(180deg, rgba(12,18,34,0.7), rgba(12,18,34,0.35));
  overflow-x: auto;
}
.pipeline-wrap::-webkit-scrollbar { height: 6px; }
.pipeline-wrap::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 3px; }
.pipeline { display: flex; align-items: stretch; gap: 6px; min-width: 340px; }
.p-node {
  position: relative; flex: 0 0 auto;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  width: 100px; padding: 18px 6px 16px; border-radius: 16px;
  border: 1px solid var(--line-strong);
}
.pn-checkout { background: linear-gradient(180deg, rgba(98,126,234,0.22), rgba(98,126,234,0.05)); }
.pn-queue    { background: linear-gradient(180deg, rgba(139,92,246,0.22), rgba(139,92,246,0.05)); }
.pn-publish  { background: linear-gradient(180deg, rgba(45,226,200,0.18), rgba(45,226,200,0.04)); }
.p-node-dot {
  position: absolute; top: 9px; width: 7px; height: 7px; border-radius: 50%;
  box-shadow: 0 0 12px currentColor;
}
.pn-checkout .p-node-dot { background: var(--eth); color: var(--eth); }
.pn-queue .p-node-dot { background: var(--violet); color: var(--violet); }
.pn-publish .p-node-dot { background: var(--teal); color: var(--teal); }
.p-node-num { font-family: var(--font-mono); font-size: 11px; color: var(--faint); }
.p-node-name { font-family: var(--font-mono); font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; }
.p-node-sub { font-size: 11px; color: var(--dim); }
.p-rail { position: relative; flex: 1 1 auto; min-width: 40px; display: flex; align-items: center; }
.rail-line {
  position: absolute; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, rgba(98,126,234,0.5), rgba(139,92,246,0.5), rgba(45,226,200,0.55));
  border-radius: 2px;
}
.packet {
  position: absolute; left: 0; width: 10px; height: 10px; border-radius: 50%;
  background: var(--teal); box-shadow: 0 0 14px var(--teal);
  animation: travel 2.6s linear infinite; animation-delay: var(--delay, 0s);
}
@keyframes travel {
  0% { left: 4%; opacity: 0; }
  12% { opacity: 1; }
  88% { opacity: 1; }
  100% { left: calc(100% - 14px); opacity: 0; }
}
.rail-label {
  position: absolute; top: calc(50% + 14px); left: 50%; transform: translateX(-50%);
  font-family: var(--font-mono); font-size: 10px; color: var(--faint);
  white-space: nowrap;
  display: none;
}

/* ---------- ticker ---------- */
.ticker { margin: 34px calc(20px * -1) 0; overflow: hidden; border-top: 1px solid var(--line); }
.ticker-track {
  display: flex; align-items: center; gap: 18px; white-space: nowrap;
  font-family: var(--font-mono); font-size: 12px; color: var(--dim);
  padding: 12px 0;
  width: max-content;
  animation: marquee 30s linear infinite;
}
.ticker-track .tk-sep { color: var(--teal); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- sekcije ---------- */
.section { padding: 84px 20px; }
.section-alt { background: linear-gradient(180deg, var(--bg-soft), var(--bg)); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { max-width: 680px; margin: 0 auto 48px; text-align: center; }
.kicker { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.22em; color: var(--teal); margin-bottom: 14px; }
.section-head h2 { font-size: clamp(30px, 5.5vw, 48px); margin-bottom: 14px; }
.section-lead { color: var(--dim); font-size: 16px; }

/* ---------- koraci (tok) ---------- */
.steps {
  display: grid; gap: 18px; max-width: 980px; margin: 0 auto;
  grid-template-columns: 1fr;
}
.step {
  position: relative; padding: 26px 24px;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.step:hover { transform: translateY(-4px); border-color: var(--line-strong); box-shadow: 0 20px 44px -22px rgba(0,0,0,0.6); }
.step-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.step-num { font-family: var(--font-mono); font-size: 13px; color: var(--faint); }
.step-chip {
  font-family: var(--font-mono); font-size: 11px; font-weight: 700;
  color: var(--chip, var(--teal)); border: 1px solid var(--chip, var(--teal));
  padding: 3px 10px; border-radius: 999px; opacity: 0.9;
}
.step h3 { font-size: 21px; margin-bottom: 10px; }
.step p { color: var(--dim); font-size: 15px; }
.step-points { list-style: none; margin: 16px 0 0; padding: 14px 0 0; border-top: 1px dashed var(--line); display: flex; flex-wrap: wrap; gap: 8px; }
.step-points li {
  font-family: var(--font-mono); font-size: 12px; color: var(--text);
  background: rgba(140,160,200,0.07); border: 1px solid var(--line);
  padding: 5px 11px; border-radius: 999px;
}
.step-points li::before { content: "› "; color: var(--teal); }

/* ---------- dokaz ---------- */
.proof-grid { display: grid; gap: 18px; max-width: 980px; margin: 0 auto; grid-template-columns: 1fr; }
.proof { padding: 26px 24px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.proof-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: 12px; margin-bottom: 16px;
  font-family: var(--font-mono); font-size: 20px; font-weight: 700;
  color: var(--teal); background: rgba(45,226,200,0.1); border: 1px solid rgba(45,226,200,0.3);
}
.proof h3 { font-size: 18px; margin-bottom: 8px; }
.proof p { color: var(--dim); font-size: 14.5px; }

/* ---------- tehnički zapis ---------- */
.record-grid { display: grid; gap: 22px; max-width: 980px; margin: 0 auto; grid-template-columns: 1fr; }
.terminal {
  background: #070b16; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; box-shadow: 0 24px 60px -30px rgba(0,0,0,0.7);
}
.terminal-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 16px; border-bottom: 1px solid var(--line);
  background: rgba(140,160,200,0.05);
}
.t-dot { width: 11px; height: 11px; border-radius: 50%; }
.t-red { background: #ff5f57; } .t-yellow { background: #febc2e; } .t-green { background: #28c840; }
.t-title { font-family: var(--font-mono); font-size: 12px; color: var(--dim); margin-left: 6px; }
.terminal-body { margin: 0; padding: 20px 18px; overflow-x: auto; }
.terminal-body code { font-family: var(--font-mono); font-size: 13px; line-height: 1.75; color: var(--text); }
.c-kw { color: var(--violet); } .c-fn { color: #7aa2ff; } .c-str { color: var(--teal); } .c-cmt { color: var(--faint); }
.record-side h3 { font-size: 19px; margin-bottom: 8px; }
.record-side p { color: var(--dim); font-size: 14.5px; margin-bottom: 16px; }
.tags-list { margin: 0 0 22px; padding: 0; list-style: none; }
.tags-list div { display: flex; justify-content: space-between; gap: 14px; padding: 11px 14px; border: 1px solid var(--line); border-radius: 12px; margin-bottom: 8px; background: var(--surface); }
.tags-list dt { font-family: var(--font-mono); font-size: 12.5px; color: var(--dim); }
.tags-list dd { margin: 0; font-family: var(--font-mono); font-size: 12.5px; color: var(--teal); }
.mono-chip {
  display: inline-block; font-family: var(--font-mono); font-size: 12.5px;
  background: rgba(140,160,200,0.07); border: 1px solid var(--line);
  padding: 8px 13px; border-radius: 10px; margin: 0 8px 8px 0; color: var(--text);
}
.mono-chip b { color: var(--teal); font-weight: 600; }

/* ---------- provjera ---------- */
.verify-grid { display: grid; gap: 24px; max-width: 980px; margin: 0 auto; grid-template-columns: 1fr; align-items: center; }
.og-card {
  margin: 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  background: var(--surface);
}
.og-card img { width: 100%; height: auto; }
.og-card figcaption {
  font-family: var(--font-mono); font-size: 12px; color: var(--faint);
  padding: 12px 16px; border-top: 1px solid var(--line);
}
.verify-side h3 { font-size: 21px; margin-bottom: 10px; }
.verify-side > p { color: var(--dim); font-size: 15px; margin-bottom: 18px; }
.gateway-list { list-style: none; margin: 0 0 20px; padding: 0; }
.gateway-list li {
  display: flex; align-items: baseline; justify-content: space-between; gap: 12px;
  padding: 13px 16px; border: 1px solid var(--line); border-radius: 12px; margin-bottom: 9px;
  background: var(--surface); transition: border-color 0.2s ease, transform 0.2s ease;
}
.gateway-list li:hover { border-color: var(--teal); transform: translateX(4px); }
.gateway-list a { font-family: var(--font-mono); font-size: 14px; font-weight: 600; }
.gateway-list a:hover { color: var(--teal); }
.gateway-list small { font-size: 12px; color: var(--faint); }
.canonical-line { margin-top: 22px; padding-top: 18px; border-top: 1px dashed var(--line); }
.canonical-note { font-size: 13px; color: var(--faint); margin-top: 10px; }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--line); padding: 40px 20px; }
.footer-inner { max-width: 980px; margin: 0 auto; text-align: center; }
.footer-brand { display: flex; align-items: center; justify-content: center; gap: 10px; font-family: var(--font-mono); font-size: 15px; font-weight: 700; margin-bottom: 12px; }
.footer-meta { font-family: var(--font-mono); font-size: 12.5px; color: var(--dim); }
.footer-meta.dim { color: var(--faint); margin-top: 6px; }

/* ---------- reveal animacije ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.65, 0.3, 1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .packet, .ticker-track, .cursor, .badge-dot { animation: none !important; }
}

/* ---------- desktop ---------- */
@media (min-width: 700px) {
  .site-nav { display: flex; }
  .nav-toggle { display: none; }
  .header-cta { margin-left: 0; }
  .steps, .proof-grid { grid-template-columns: repeat(3, 1fr); }
  .proof-grid { grid-template-columns: repeat(2, 1fr); }
  .record-grid { grid-template-columns: 1.15fr 1fr; }
  .verify-grid { grid-template-columns: 1.05fr 1fr; }
  .p-node { width: 132px; padding: 22px 10px 18px; }
  .rail-label { display: block; }
  .hero { padding-top: 88px; }
  .ticker { margin-top: 48px; }
}
@media (min-width: 1080px) {
  .p-node { width: 150px; }
  .rail-label { font-size: 11px; }
}