/* ==========================================================================
   PULSE INVESTMENT — main.css
   Token system: dark "monitor" surface + ECG pulse accent gradient
   ========================================================================== */

:root {
  --bg: #0B0F19;
  --bg-soft: #0E1524;
  --surface: #131B2C;
  --surface-2: #182238;
  --border: #232F45;
  --border-soft: #1B2438;

  --text: #F5F7FA;
  --text-muted: #9AA4B8;
  --text-dim: #5B6578;

  --accent: #00E5A0;
  --accent-2: #4F7CFF;
  --accent-grad: linear-gradient(90deg, var(--accent), var(--accent-2));

  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;

  --font-display: "Space Grotesk", "Inter", sans-serif;
  --font-body: "Inter", sans-serif;
  --font-mono: "JetBrains Mono", monospace;

  --container: 1180px;
  --ease: cubic-bezier(.16,.84,.44,1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 .5em;
  letter-spacing: -0.01em;
}

p { margin: 0 0 1em; color: var(--text-muted); }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; cursor: pointer; }
img, svg { display: block; max-width: 100%; }

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

.mono { font-family: var(--font-mono); }

/* Focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: #05100c;
  padding: 12px 18px;
  border-radius: 0 0 8px 0;
  z-index: 1000;
  font-weight: 600;
}
.skip-link:focus { left: 0; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 14px;
}

.section-head { max-width: 640px; margin-bottom: 48px; }
.section-sub { font-size: 17px; }

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  border: 1px solid transparent;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease), background .25s var(--ease);
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent-grad);
  color: #05130E;
  box-shadow: 0 8px 24px -8px rgba(0,229,160,.45);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 32px -8px rgba(0,229,160,.6); }
.btn-outline {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.btn-block { width: 100%; }

.link-arrow {
  color: var(--accent);
  font-weight: 600;
  display: inline-block;
  transition: gap .2s var(--ease), opacity .2s;
}
.link-arrow:hover { opacity: .8; }

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 500;
  background: rgba(11,15,25,0);
  border-bottom: 1px solid transparent;
  transition: background .3s var(--ease), border-color .3s var(--ease), backdrop-filter .3s var(--ease);
}
.site-header.scrolled {
  background: rgba(11,15,25,.82);
  border-color: var(--border-soft);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 24px;
}

.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: .04em;
}
.logo-text em { font-style: normal; color: var(--text-dim); font-weight: 500; }

.main-nav { display: flex; align-items: center; gap: 32px; }
.main-nav a {
  font-size: 14.5px;
  color: var(--text-muted);
  position: relative;
  padding: 6px 0;
  transition: color .2s;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%; bottom: 0;
  height: 2px;
  background: var(--accent-grad);
  transition: right .25s var(--ease);
  border-radius: 2px;
}
.main-nav a:hover { color: var(--text); }
.main-nav a:hover::after { right: 0; }

.header-actions { display: flex; align-items: center; gap: 18px; }
.phone-link {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-muted);
  transition: color .2s;
}
.phone-link:hover { color: var(--accent); }

.lang-switch {
  position: relative;
  display: flex;
  width: 76px;
  height: 34px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px;
}
.lang-opt {
  position: relative;
  z-index: 2;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--text-dim);
  transition: color .25s;
}
.lang-switch[data-active="en"] .lang-opt[data-lang="en"],
.lang-switch:not([data-active="en"]) .lang-opt[data-lang="ua"] { color: #05130E; }
.lang-thumb {
  position: absolute;
  top: 3px; left: 3px;
  width: calc(50% - 3px);
  height: calc(100% - 6px);
  background: var(--accent-grad);
  border-radius: 999px;
  transition: transform .3s var(--ease);
}
.lang-switch[data-active="en"] .lang-thumb { transform: translateX(100%); }

.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 34px;
  height: 34px;
  background: none;
  border: none;
  padding: 0;
}
.burger span {
  display: block;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .3s var(--ease), opacity .3s var(--ease);
}
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  padding: 180px 0 120px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
.pulse-field {
  position: absolute;
  inset: 0;
  will-change: transform;
}
.pulse-layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.pulse-layer:first-child { opacity: .5; }
.pulse-layer:last-child { opacity: .4; top: 8%; }

.wave-base {
  fill: none;
  stroke-width: 1.5;
  stroke-opacity: .16;
  vector-effect: non-scaling-stroke;
}
.wave-comet {
  fill: none;
  stroke-width: 2.5;
  stroke-linecap: round;
  vector-effect: non-scaling-stroke;
}

.wave-comet-a { stroke-dasharray: 46 2954; animation: pulse-travel 6s linear infinite; filter: drop-shadow(0 0 6px rgba(0,229,160,.75)); }
.wave-comet-b { stroke-dasharray: 46 2954; animation: pulse-travel 7.5s linear infinite reverse; animation-delay: 1.2s; filter: drop-shadow(0 0 6px rgba(79,124,255,.75)); }

@keyframes pulse-travel {
  from { stroke-dashoffset: 0; }
  to   { stroke-dashoffset: -3000; }
}

.pulse-scan {
  position: absolute;
  top: 46%;
  left: 0;
  width: 100%;
  height: 300px;
  transform: translateY(-50%);
  opacity: .85;
}
.pulse-scan svg { width: 100%; height: 100%; display: block; }

.wave-base-main { stroke: url(#heroGrad); stroke-opacity: .2; stroke-width: 2; }
.wave-comet-main {
  stroke: url(#heroGrad);
  stroke-width: 3;
  stroke-dasharray: 70 3050;
  animation: pulse-travel-main 3.6s linear infinite;
  filter: drop-shadow(0 0 10px rgba(0,229,160,.55));
}
@keyframes pulse-travel-main {
  from { stroke-dashoffset: 0; }
  to   { stroke-dashoffset: -3120; }
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-soft) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 20%, black 20%, transparent 75%);
  opacity: .45;
}

.hero-inner { position: relative; z-index: 1; max-width: 780px; }
.hero-title {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  color: var(--text);
}
.hero-sub {
  font-size: 18px;
  max-width: 560px;
  margin-bottom: 36px;
}
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 28px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13.5px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}
.dot-live {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(0,229,160,.6);
  animation: dot-ping 1.8s ease-out infinite;
}
@keyframes dot-ping {
  0% { box-shadow: 0 0 0 0 rgba(0,229,160,.55); }
  70% { box-shadow: 0 0 0 8px rgba(0,229,160,0); }
  100% { box-shadow: 0 0 0 0 rgba(0,229,160,0); }
}

/* ==========================================================================
   Vitals strip
   ========================================================================== */
.vitals {
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
  background: var(--bg-soft);
  padding: 40px 0;
}
.vitals-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.vital { display: flex; flex-direction: column; gap: 6px; }
.vital-num {
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 500;
  background: var(--accent-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.vital-label { font-size: 13.5px; color: var(--text-dim); max-width: 20ch; }

/* ==========================================================================
   About
   ========================================================================== */
.about { padding: 120px 0; position: relative; overflow: hidden; }
.about::before {
  content: "";
  position: absolute;
  top: -180px; right: -160px;
  width: 620px; height: 620px;
  background-image: url("../images/bg-blob.svg");
  background-size: contain;
  background-repeat: no-repeat;
  opacity: .55;
  pointer-events: none;
  z-index: 0;
}
.about-grid { position: relative; z-index: 1; }
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 64px;
  align-items: start;
}
.about-text h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); max-width: 14ch; }
.about-text p { font-size: 16.5px; }

.about-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  overflow: hidden;
}
.card-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border-soft);
  font-size: 14.5px;
}
.card-row:first-child { padding-top: 0; }
.card-row:last-child { border-bottom: none; }
.card-label { color: var(--text-dim); flex-shrink: 0; }
.card-value { color: var(--text); text-align: right; }
.card-pulse { margin-top: 22px; opacity: .8; }
.card-pulse svg { width: 100%; height: 34px; }

/* ==========================================================================
   Services
   ========================================================================== */
.services { padding: 40px 0 120px; position: relative; overflow: hidden; }
.services::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("../images/bg-circuit.svg");
  background-size: 340px 340px;
  background-repeat: repeat;
  opacity: .06;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, black 30%, transparent 78%);
  pointer-events: none;
  z-index: 0;
}
.services .container { position: relative; z-index: 1; }
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.service-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 28px;
  transition: transform .3s var(--ease), border-color .3s var(--ease), background .3s var(--ease);
}
.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0,229,160,.4);
  background: var(--surface-2);
}
.service-icon {
  width: 46px; height: 46px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--bg-soft);
  color: var(--accent);
  margin-bottom: 20px;
  transition: background .3s, color .3s, transform .3s var(--ease);
}
.service-icon svg { width: 24px; height: 24px; }
.service-card:hover .service-icon {
  background: var(--accent-grad);
  color: #05130E;
  transform: scale(1.08) rotate(-4deg);
}
.service-card h3 { font-size: 19px; margin-bottom: 10px; }
.service-card p { font-size: 15px; margin-bottom: 18px; }


/* ==========================================================================
   Process
   ========================================================================== */
.process { padding: 40px 0 120px; position: relative; overflow: hidden; }
.process::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("../images/bg-circuit.svg");
  background-size: 300px 300px;
  background-repeat: repeat;
  opacity: .045;
  mask-image: radial-gradient(ellipse 75% 70% at 50% 40%, black 25%, transparent 75%);
  pointer-events: none;
  z-index: 0;
}
.process .container { position: relative; z-index: 1; }
.process-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px 32px;
}
.process-step { display: flex; gap: 18px; }
.step-num {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--accent);
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.process-step h3 { font-size: 17px; margin-bottom: 6px; }
.process-step p { font-size: 14.5px; margin-bottom: 0; }

/* ==========================================================================
   Benefits
   ========================================================================== */
.benefits { padding: 40px 0 120px; }
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px 32px;
}
.benefit {
  padding-top: 20px;
  border-top: 2px solid var(--border);
  position: relative;
}
.benefit::before {
  content: "";
  position: absolute;
  top: -2px; left: 0;
  width: 34px; height: 2px;
  background: var(--accent-grad);
}
.benefit h3 { font-size: 17.5px; margin-bottom: 8px; }
.benefit p { font-size: 15px; margin-bottom: 0; }

/* ==========================================================================
   Contact
   ========================================================================== */
.contact { padding: 40px 0 130px; position: relative; overflow: hidden; }
.contact::before {
  content: "";
  position: absolute;
  bottom: -220px; left: -180px;
  width: 640px; height: 640px;
  background-image: url("../images/bg-blob.svg");
  background-size: contain;
  background-repeat: no-repeat;
  opacity: .4;
  pointer-events: none;
  z-index: 0;
  transform: rotate(140deg);
}
.contact-grid { position: relative; z-index: 1; }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.contact-list { margin: 28px 0 24px; display: flex; flex-direction: column; gap: 16px; }
.contact-list li { display: flex; flex-direction: column; gap: 3px; }
.contact-label { font-size: 12.5px; color: var(--text-dim); text-transform: uppercase; letter-spacing: .06em; }
.contact-value { font-size: 16px; color: var(--text); }
a.contact-value:hover { color: var(--accent); }

.map-frame {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  filter: grayscale(.3) invert(.92) contrast(.9);
}
.map-frame iframe { width: 100%; height: 260px; border: 0; display: block; }
.map-link {
  display: block;
  font-size: 13px;
  color: var(--text-dim);
  padding: 10px 2px 0;
}
.map-link:hover { color: var(--accent); }

.contact-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.form-row { display: flex; flex-direction: column; gap: 8px; }
.form-row label { font-size: 13.5px; color: var(--text-muted); }
.form-row input, .form-row textarea {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  resize: vertical;
  transition: border-color .2s;
}
.form-row input:focus, .form-row textarea:focus { border-color: var(--accent); outline: none; }
.form-note { font-size: 12.5px; color: var(--text-dim); margin: 0; text-align: center; }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--bg-soft);
  border-top: 1px solid var(--border-soft);
  padding: 70px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 50px;
  border-bottom: 1px solid var(--border-soft);
}
.footer-brand p { font-size: 14px; margin-top: 14px; max-width: 32ch; }
.footer-col { display: flex; flex-direction: column; gap: 12px; }
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 12.5px;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-dim);
  margin-bottom: 4px;
  font-weight: 500;
}
.footer-col a, .footer-col span { font-size: 14.5px; color: var(--text-muted); }
.footer-col a:hover { color: var(--accent); }
.footer-legal span { font-family: var(--font-mono); font-size: 13px; }

.footer-bottom { padding: 22px 0 28px; }
.footer-bottom p { font-size: 13px; color: var(--text-dim); margin: 0; }

/* ==========================================================================
   Scroll reveal
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.in-view { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 980px) {
  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .process-list { grid-template-columns: repeat(2, 1fr); }
  .benefits-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .vitals-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
}

@media (max-width: 760px) {
  .header-actions { gap: 12px; }
  .phone-link { display: none; }
  .main-nav {
    position: fixed;
    inset: 76px 0 auto 0;
    background: rgba(11,15,25,.98);
    backdrop-filter: blur(10px);
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 16px 24px 24px;
    border-bottom: 1px solid var(--border-soft);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .25s var(--ease), transform .25s var(--ease);
  }
  .main-nav.open { opacity: 1; transform: translateY(0); pointer-events: auto; }
  .main-nav a { padding: 12px 0; width: 100%; font-size: 16px; }
  .burger { display: flex; }

  .hero { padding: 150px 0 80px; }
  .services-grid, .process-list, .benefits-grid { grid-template-columns: 1fr; }
  .vitals-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .card-row { flex-direction: column; gap: 4px; }
  .card-value { text-align: left; }
}