/* ==========================================================================
   Tokens — an operations console: cold panel surfaces, steel dividers,
   and signal colours that mean something (orange = brand/active,
   teal = under service contract). Mono is for data, sans is for reading.
   ========================================================================== */
:root {
  --void: #0A0E13;
  --panel: #121923;
  --panel-2: #182029;
  --line: #26323C;
  --line-soft: #1B242C;
  --mist: #7E93A0;
  --mist-dim: #566773;
  --paper: #E7ECEE;
  --signal: #FF9900;
  --signal-dim: #4D3015;
  --online: #39C2A8;
  --online-dim: #163A34;
  --error: #E5484D;

  --font-sans: "IBM Plex Sans", "Segoe UI", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;

  --container: 1180px;
  --gutter: 24px;
  --header-h: 78px;
  --radius: 4px;
  --radius-sm: 2px;
  --ease: cubic-bezier(.4, 0, .2, 1);
}
@media (max-width: 600px) { :root { --gutter: 16px; } }

/* ==========================================================================
   Reset
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 14px); }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--paper);
  background: var(--void);
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font: inherit; color: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font: inherit; color: inherit; }

:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; border-radius: 1px; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }

h1, h2, h3, h4 { font-family: var(--font-sans); font-weight: 600; line-height: 1.15; letter-spacing: -.005em; }

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

.section { padding: 108px 0; }
@media (max-width: 768px) { .section { padding: 64px 0; } }

.section__head { max-width: 680px; margin-bottom: 52px; }
.section__title { font-size: clamp(1.8rem, 3.2vw, 2.6rem); text-wrap: balance; }
.section__subtitle { margin-top: 14px; color: var(--mist); font-size: 1.05rem; max-width: 58ch; }

/* status LED, used wherever a real state is reported */
.led { position: relative; display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--online); box-shadow: 0 0 0 3px var(--online-dim); flex-shrink: 0; }
.led--idle { background: var(--mist-dim); box-shadow: 0 0 0 3px var(--panel-2); }

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 22px; font-size: .96rem; font-weight: 600;
  border-radius: var(--radius-sm); border: 1px solid transparent;
  transition: background .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
  white-space: nowrap;
}
.btn--primary { background: var(--signal); color: #1A0F02; }
.btn--primary:hover { background: #FFAD2E; }
.btn--ghost { border-color: var(--line); color: var(--paper); }
.btn--ghost:hover { border-color: var(--mist); background: var(--panel-2); }
.btn--sm { padding: 9px 16px; font-size: .88rem; }
.btn--lg { padding: 15px 28px; font-size: 1rem; }
.btn--block { width: 100%; }

/* ==========================================================================
   Header
   ========================================================================== */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--header-h);
  background: rgba(10, 14, 19, .92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-soft);
  transition: border-color .2s var(--ease);
}
.header.scrolled { border-bottom-color: var(--line); }
.header__inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }

.logo { display: flex; align-items: center; gap: 10px; }
.logo__mark { flex-shrink: 0; }
.logo__text { font-family: var(--font-mono); font-size: 1.2rem; font-weight: 600; letter-spacing: -.01em; color: var(--paper); }
.logo__accent { color: var(--signal); }

.nav__list { display: flex; align-items: center; gap: 28px; }
.nav__link { font-size: .94rem; color: var(--mist); transition: color .2s var(--ease); position: relative; }
.nav__link:hover { color: var(--paper); }
.nav__link.active-link { color: var(--paper); }
.nav__link.active-link::after { content: ""; position: absolute; left: 0; right: 0; bottom: -29px; height: 2px; background: var(--signal); }

.header__actions { display: flex; align-items: center; gap: 18px; }
.header__phone { display: flex; align-items: center; gap: 7px; font-family: var(--font-mono); font-size: .92rem; color: var(--paper); }
.header__phone svg { color: var(--signal); }

.burger { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 32px; height: 32px; }
.burger span { display: block; width: 100%; height: 2px; background: var(--paper); transition: transform .25s var(--ease), opacity .25s var(--ease); }
.burger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.active span:nth-child(2) { opacity: 0; }
.burger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 960px) {
  .nav { position: fixed; top: var(--header-h); left: 0; right: 0; bottom: 0; background: var(--void); padding: 32px var(--gutter); transform: translateX(100%); transition: transform .3s var(--ease); overflow-y: auto; }
  .nav.open { transform: translateX(0); }
  .nav__list { flex-direction: column; align-items: flex-start; gap: 22px; }
  .nav__link { font-size: 1.2rem; }
  .nav__link.active-link::after { bottom: -6px; }
  .header__phone { display: none; }
  .burger { display: flex; }
}
@media (max-width: 560px) {
  .header__actions .btn { display: none; }
}

/* ==========================================================================
   Hero / Console
   ========================================================================== */
.hero { padding: calc(var(--header-h) + 36px) 0 56px; position: relative; }
.hero__canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; }
.hero > .container { position: relative; z-index: 1; }

.console {
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel);
  background-image: linear-gradient(var(--line-soft) 1px, transparent 1px), linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 34px 34px;
  background-position: -1px -1px;
  overflow: hidden;
}

.console__bar {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px;
  padding: 12px 22px; border-bottom: 1px solid var(--line); background: var(--void);
  font-family: var(--font-mono); font-size: .82rem; color: var(--mist);
}
.console__clock { letter-spacing: .02em; }
.console__status { display: flex; align-items: center; gap: 8px; }

.console__main { display: grid; grid-template-columns: 1.15fr 1fr; gap: 0; }
.console__intro { padding: 44px 40px; border-right: 1px solid var(--line); }
.hero__title { font-size: clamp(1.9rem, 3.1vw, 2.5rem); text-wrap: balance; margin-bottom: 18px; }
.hero__lead { color: var(--mist); font-size: 1.05rem; max-width: 46ch; margin-bottom: 30px; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; }

.board { padding: 24px 28px 28px; }
.board__head, .board__row { display: grid; grid-template-columns: 1.5fr 1fr 1.2fr; gap: 10px; align-items: center; }
.board__head { font-family: var(--font-mono); font-size: .72rem; color: var(--mist-dim); text-transform: uppercase; letter-spacing: .06em; padding-bottom: 10px; border-bottom: 1px solid var(--line); }
.board__list { display: flex; flex-direction: column; }
.board__row { padding: 13px 0; border-bottom: 1px solid var(--line-soft); opacity: 0; transform: translateX(6px); transition: opacity .4s var(--ease), transform .4s var(--ease); }
.board__row:last-child { border-bottom: none; }
.console.is-booted .board__row { opacity: 1; transform: none; }
.board__row:nth-child(1) { transition-delay: .15s; }
.board__row:nth-child(2) { transition-delay: .3s; }
.board__row:nth-child(3) { transition-delay: .45s; }
.board__row:nth-child(4) { transition-delay: .6s; }
.board__name { font-size: .92rem; }
.board__sys { font-family: var(--font-mono); font-size: .78rem; color: var(--mist); }
.board__status { display: flex; align-items: center; gap: 7px; font-size: .82rem; color: var(--mist); }

.console__stats { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); }
.stat { padding: 22px 20px; border-right: 1px solid var(--line); }
.stat:last-child { border-right: none; }
.stat__value { display: block; font-family: var(--font-mono); font-size: 1.7rem; font-weight: 600; color: var(--paper); }
.stat__label { display: block; margin-top: 4px; font-size: .82rem; color: var(--mist); }

.scroll-cue { position: absolute; left: 50%; bottom: 10px; transform: translateX(-50%); width: 22px; height: 34px; border: 1px solid var(--line); border-radius: 12px; }
.scroll-cue span { position: absolute; top: 6px; left: 50%; width: 3px; height: 7px; background: var(--signal); border-radius: 2px; transform: translateX(-50%); animation: scrollCue 1.8s infinite; }
@keyframes scrollCue { 0% { opacity: 1; top: 6px; } 100% { opacity: 0; top: 18px; } }

@media (max-width: 960px) {
  .console__main { grid-template-columns: 1fr; }
  .console__intro { border-right: none; border-bottom: 1px solid var(--line); padding: 32px 24px; }
  .board { padding: 20px 24px 24px; }
  .console__stats { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: none; }
  .stat:nth-child(1), .stat:nth-child(2) { border-bottom: 1px solid var(--line); }
}
@media (max-width: 640px) {
  .board__head span:nth-child(2), .board__row .board__sys { display: none; }
  .board__head, .board__row { grid-template-columns: 1.6fr 1fr; }
  .console__bar { font-size: .74rem; padding: 10px 16px; }
}

/* ==========================================================================
   Clients strip
   ========================================================================== */
.strip { padding: 40px 0; border-bottom: 1px solid var(--line-soft); }
.strip__label { font-size: .86rem; color: var(--mist-dim); margin-bottom: 16px; }
.strip__tags { display: flex; flex-wrap: wrap; gap: 10px; }
.tag-chip { font-family: var(--font-mono); font-size: .78rem; color: var(--mist); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 7px 12px; }

/* ==========================================================================
   Services — rack panels
   ========================================================================== */
.panels { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.panel { background: var(--panel); padding: 26px 26px 28px; }
.panel__top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.panel__id { font-family: var(--font-mono); font-size: .74rem; color: var(--mist-dim); letter-spacing: .04em; }
.panel__icon { width: 38px; height: 38px; display: flex; align-items: center; justify-content: center; color: var(--signal); margin-bottom: 14px; }
.panel__icon svg { width: 24px; height: 24px; }
.panel h3 { font-size: 1.15rem; margin-bottom: 8px; }
.panel p { color: var(--mist); font-size: .94rem; margin-bottom: 16px; }
.panel__list { display: flex; flex-direction: column; gap: 7px; }
.panel__list li { position: relative; padding-left: 15px; font-size: .88rem; color: var(--mist); }
.panel__list li::before { content: ""; position: absolute; left: 0; top: 8px; width: 5px; height: 1px; background: var(--mist-dim); }

@media (max-width: 960px) { .panels { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .panels { grid-template-columns: 1fr; } }

/* ==========================================================================
   About — radar
   ========================================================================== */
.about__grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 64px; align-items: center; }
.about__radar { position: relative; aspect-ratio: 1; }
.about__radar svg { width: 100%; height: 100%; }
.radar__sweep { transform-origin: 200px 200px; animation: radarSweep 7s linear infinite; }
@keyframes radarSweep { to { transform: rotate(360deg); } }

.about__content p { color: var(--mist); font-size: 1.02rem; margin: 16px 0 28px; max-width: 54ch; }

.specplate { display: flex; flex-direction: column; gap: 18px; margin-bottom: 30px; }
.specplate__row { display: flex; gap: 14px; align-items: flex-start; padding-top: 2px; }
.specplate__row strong { display: block; font-size: .98rem; font-weight: 600; margin-bottom: 3px; }
.specplate__row p { color: var(--mist); font-size: .92rem; }

@media (max-width: 860px) {
  .about__grid { grid-template-columns: 1fr; gap: 40px; }
  .about__radar { max-width: 280px; margin: 0 auto; }
}

/* ==========================================================================
   Process — signal chain
   ========================================================================== */
.chain { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; position: relative; }
.chain::before { content: ""; position: absolute; top: 15px; left: 0; right: 0; height: 1px; background: var(--line); }
.chain__step { position: relative; padding: 0 18px; }
.chain__step:first-child { padding-left: 0; }
.chain__index { display: flex; align-items: center; justify-content: center; width: 30px; height: 30px; margin-bottom: 20px; border: 1px solid var(--signal); border-radius: 50%; background: var(--void); font-family: var(--font-mono); font-size: .82rem; color: var(--signal); position: relative; z-index: 1; }
.chain__step h3 { font-size: 1.02rem; margin-bottom: 8px; }
.chain__step p { color: var(--mist); font-size: .9rem; }

@media (max-width: 960px) {
  .chain { grid-template-columns: 1fr; gap: 28px; }
  .chain::before { top: 0; left: 15px; right: auto; bottom: 0; width: 1px; height: auto; }
  .chain__step { padding: 0 0 0 46px; }
  .chain__step:first-child { padding-left: 46px; }
  .chain__index { position: absolute; left: 0; top: 0; margin-bottom: 0; }
}

/* ==========================================================================
   Spec sheet (advantages)
   ========================================================================== */
.specsheet { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.specsheet__row { display: grid; grid-template-columns: 220px 1fr; border-bottom: 1px solid var(--line); }
.specsheet__row:last-child { border-bottom: none; }
.specsheet__row:nth-child(even) { background: var(--panel); }
.specsheet__row dt { padding: 18px 24px; font-family: var(--font-mono); font-size: .86rem; color: var(--signal); border-right: 1px solid var(--line); display: flex; align-items: center; }
.specsheet__row dd { padding: 18px 24px; color: var(--mist); font-size: .94rem; display: flex; align-items: center; }

@media (max-width: 700px) {
  .specsheet__row { grid-template-columns: 1fr; }
  .specsheet__row dt { border-right: none; border-bottom: 1px solid var(--line-soft); padding-bottom: 8px; }
}

/* ==========================================================================
   Projects — object log
   ========================================================================== */
.log__filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 36px; }
.filter-btn { padding: 9px 16px; font-size: .86rem; color: var(--mist); border: 1px solid var(--line); border-radius: var(--radius-sm); transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease); }
.filter-btn:hover { color: var(--paper); border-color: var(--mist); }
.filter-btn.active { color: #1A0F02; background: var(--signal); border-color: var(--signal); }

.log { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.log__row { display: grid; grid-template-columns: 150px 1fr 110px; gap: 20px; align-items: start; padding: 22px 24px; border-bottom: 1px solid var(--line); }
.log__row:last-child { border-bottom: none; }
.log__row.hide { display: none; }
.log__tag { font-family: var(--font-mono); font-size: .74rem; color: var(--online); border: 1px solid var(--online-dim); border-radius: var(--radius-sm); padding: 5px 9px; width: fit-content; }
.log__body h3 { font-size: 1.04rem; margin-bottom: 6px; }
.log__body p { color: var(--mist); font-size: .9rem; max-width: 68ch; }
.log__years { font-family: var(--font-mono); font-size: .82rem; color: var(--mist-dim); text-align: right; }

@media (max-width: 760px) {
  .log__row { grid-template-columns: 1fr; gap: 10px; }
  .log__years { text-align: left; }
}

/* ==========================================================================
   CTA panel
   ========================================================================== */
.cta-panel { padding: 64px 0; border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); background: var(--panel); }
.cta-panel__inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.cta-panel__inner h2 { font-size: 1.7rem; margin-bottom: 8px; }
.cta-panel__inner p { color: var(--mist); }

/* ==========================================================================
   Contacts
   ========================================================================== */
.contacts__grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 64px; }
.nameplates { display: flex; flex-direction: column; gap: 20px; margin: 28px 0 0; }
.nameplate { display: flex; flex-direction: column; gap: 2px; padding-bottom: 16px; border-bottom: 1px solid var(--line-soft); }
.nameplate dt { font-family: var(--font-mono); font-size: .74rem; color: var(--mist-dim); letter-spacing: .04em; }
.nameplate dd { font-size: 1.02rem; }
.nameplate dd a:hover { color: var(--signal); }

.form { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; }
.form h3 { font-size: 1.3rem; margin-bottom: 8px; }
.form__hint, .contact-form__hint { color: var(--mist); font-size: .9rem; margin-bottom: 22px; }

.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-family: var(--font-mono); font-size: .74rem; color: var(--mist); letter-spacing: .04em; margin-bottom: 7px; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 12px 14px; background: var(--void); border: 1px solid var(--line); border-radius: var(--radius-sm); color: var(--paper); font-size: .95rem;
  transition: border-color .2s var(--ease);
}
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--mist-dim); }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { border-color: var(--signal); outline: none; }
.form-group select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%237E93A0' stroke-width='1.5' fill='none'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; }
.error-msg { display: block; min-height: 16px; margin-top: 6px; font-size: .78rem; color: var(--error); }
.form-group.has-error input, .form-group.has-error textarea { border-color: var(--error); }

.checkbox { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 22px; font-size: .88rem; color: var(--mist); cursor: pointer; }
.checkbox input { width: 16px; height: 16px; margin-top: 2px; accent-color: var(--signal); }
.checkbox.has-error .error-msg { display: block; }

.form-success { display: none; text-align: center; padding: 20px 0 4px; color: var(--online); }
.form-success svg { margin: 0 auto 12px; }
.form-success p { color: var(--paper); font-size: .95rem; }
.form.submitted .form-group, .form.submitted .checkbox, .form.submitted button[type="submit"] { display: none; }
.form.submitted .form-success { display: block; }

.hp-field { position: absolute; left: -9999px; top: -9999px; width: 1px; height: 1px; opacity: 0; }

.form-error { display: none; margin-top: 14px; padding: 10px 14px; border-radius: 8px; background: rgba(255, 90, 90, .1); color: #ff8080; font-size: .88rem; text-align: center; }

@media (max-width: 900px) {
  .contacts__grid { grid-template-columns: 1fr; gap: 40px; }
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer { border-top: 1px solid var(--line-soft); padding-top: 56px; }
.footer__inner { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 36px; padding-bottom: 40px; }
.footer__col p { color: var(--mist); font-size: .9rem; margin-top: 14px; max-width: 34ch; }
.footer__col h4 { font-size: .86rem; color: var(--mist-dim); font-family: var(--font-mono); letter-spacing: .04em; margin-bottom: 14px; }
.footer__col ul { display: flex; flex-direction: column; gap: 10px; }
.footer__col ul a, .footer__col ul span { color: var(--mist); font-size: .92rem; }
.footer__col ul a:hover { color: var(--signal); }
.logo--footer .logo__text { font-size: 1.3rem; }

.footer__bottom { border-top: 1px solid var(--line-soft); }
.footer__bottom-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; padding: 20px 0; font-size: .82rem; color: var(--mist-dim); font-family: var(--font-mono); }

@media (max-width: 860px) {
  .footer__inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .footer__inner { grid-template-columns: 1fr; }
}

/* ==========================================================================
   To top
   ========================================================================== */
.to-top {
  position: fixed; right: 24px; bottom: 24px; width: 42px; height: 42px; z-index: 900;
  display: flex; align-items: center; justify-content: center;
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius-sm);
  color: var(--paper); opacity: 0; transform: translateY(8px); pointer-events: none;
  transition: opacity .2s var(--ease), transform .2s var(--ease), border-color .2s var(--ease);
}
.to-top.show { opacity: 1; transform: none; pointer-events: auto; }
.to-top:hover { border-color: var(--signal); }

/* ==========================================================================
   Cookie / data notice
   ========================================================================== */
.cookie-banner {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 1000;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 18px;
  padding: 16px var(--gutter); background: var(--void); border-top: 1px solid var(--line);
  transform: translateY(100%); transition: transform .3s var(--ease);
}
.cookie-banner.show { transform: none; }
.cookie-banner p { margin: 0; max-width: 62ch; color: var(--mist); font-size: .88rem; }
.cookie-banner .btn { flex-shrink: 0; }

@media (max-width: 600px) {
  .cookie-banner { flex-direction: column; align-items: stretch; text-align: center; }
}

/* ==========================================================================
   Reduced motion
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .radar__sweep, .scroll-cue span { animation: none; }
  .board__row { opacity: 1; transform: none; transition: none; }
}