/* Сервизо — маркетингов сайт
   Индустриален / blueprint: графит + амбър, IBM Plex Sans/Mono */

:root {
  --ink-900: #0f1115;
  --ink-800: #16191f;
  --ink-700: #1e232b;
  --ink-600: #2a3039;
  --ink-500: #3a424e;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.14);
  --accent: #f59e0b;
  --accent-600: #d97706;
  --accent-50: #fff7ed;
  --text: #e7ebf0;
  --text-dim: #9aa4b2;
  --text-faint: #6b7480;
  --white: #ffffff;
  --radius: 14px;
  --maxw: 1140px;
  --font-sans: 'IBM Plex Sans', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--ink-900);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Blueprint grid background */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 20%, transparent 75%);
  opacity: 0.6;
}

a { color: inherit; text-decoration: none; }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; position: relative; z-index: 1; }

/* ---------- Typography ---------- */
h1, h2, h3 { line-height: 1.12; letter-spacing: -0.02em; margin: 0; font-weight: 600; }
h1 { font-size: clamp(2.3rem, 5.2vw, 4rem); }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.6rem); }
h3 { font-size: 1.15rem; }
p { margin: 0; }

.mono { font-family: var(--font-mono); }
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before { content: ""; width: 26px; height: 1px; background: var(--accent); display: inline-block; }

.lead { color: var(--text-dim); font-size: clamp(1.05rem, 1.6vw, 1.25rem); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  font-weight: 600; font-size: 0.98rem;
  padding: 13px 22px; border-radius: 10px;
  border: 1px solid transparent; cursor: pointer;
  transition: transform .15s ease, background .15s ease, border-color .15s ease;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary { background: var(--accent); color: var(--ink-900); }
.btn-primary:hover { background: #ffb020; transform: translateY(-2px); }
.btn-ghost { border-color: var(--line-strong); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); color: var(--white); transform: translateY(-2px); }
.btn-lg { padding: 16px 28px; font-size: 1.05rem; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(15, 17, 21, 0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; gap: 28px; height: 68px; }
.brand { display: flex; align-items: center; gap: 11px; font-weight: 700; font-size: 1.15rem; color: var(--white); }
.brand small { display: block; font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.2em; color: var(--text-faint); text-transform: uppercase; font-weight: 500; margin-top: -2px; }
.nav-links { display: flex; gap: 26px; margin-left: auto; }
.nav-links a { color: var(--text-dim); font-size: 0.95rem; font-weight: 500; transition: color .15s; }
.nav-links a:hover, .nav-links a.active { color: var(--white); }
.nav-cta { display: flex; gap: 12px; align-items: center; }
.nav-cta .btn { padding: 10px 18px; }
.nav-toggle { display: none; background: none; border: 1px solid var(--line-strong); border-radius: 8px; padding: 8px; color: var(--text); cursor: pointer; }

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; margin-left: auto; }
  .nav-cta { margin-left: 0; }
  .nav-cta .btn { padding: 9px 14px; font-size: 0.9rem; }
  .mobile-menu.open { display: block; }
}
.mobile-menu { display: none; border-bottom: 1px solid var(--line); background: var(--ink-800); }
.mobile-menu a { display: block; padding: 14px 24px; border-top: 1px solid var(--line); color: var(--text-dim); font-weight: 500; }
.mobile-menu a:first-child { border-top: none; }

/* ---------- Sections ---------- */
section { position: relative; z-index: 1; }
.section { padding: 92px 0; }
.section-sm { padding: 64px 0; }
.section-head { max-width: 640px; margin-bottom: 52px; }
.section-head h2 { margin: 16px 0 14px; }

/* ---------- Hero ---------- */
.hero { padding: 96px 0 80px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.hero h1 { margin: 20px 0 22px; }
.hero h1 .hl { color: var(--accent); }
.hero-cta { display: flex; gap: 14px; margin: 34px 0 26px; flex-wrap: wrap; }
.hero-trust { display: flex; gap: 22px; flex-wrap: wrap; color: var(--text-faint); font-size: 0.86rem; font-family: var(--font-mono); }
.hero-trust span { display: inline-flex; align-items: center; gap: 7px; }
.hero-trust svg { width: 15px; height: 15px; color: var(--accent); }
@media (max-width: 860px) { .hero-grid { grid-template-columns: 1fr; gap: 40px; } }

/* Mock app window */
.mock {
  border: 1px solid var(--line-strong); border-radius: var(--radius);
  background: linear-gradient(180deg, var(--ink-800), var(--ink-900));
  box-shadow: 0 30px 80px -30px rgba(0,0,0,0.8), 0 0 0 1px rgba(245,158,11,0.05);
  overflow: hidden;
}
.mock-bar { display: flex; align-items: center; gap: 7px; padding: 12px 15px; border-bottom: 1px solid var(--line); background: var(--ink-700); }
.mock-bar i { width: 11px; height: 11px; border-radius: 50%; background: var(--ink-500); display: block; }
.mock-bar i:first-child { background: var(--accent); }
.mock-bar span { margin-left: 10px; font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-faint); }
.mock-body { padding: 18px; display: grid; gap: 12px; }
.mock-row { display: flex; align-items: center; justify-content: space-between; padding: 13px 15px; border: 1px solid var(--line); border-radius: 10px; background: var(--ink-800); }
.mock-row .l { display: flex; align-items: center; gap: 12px; }
.mock-row .tag { font-family: var(--font-mono); font-size: 0.72rem; padding: 3px 9px; border-radius: 6px; }
.tag-amber { background: rgba(245,158,11,0.14); color: var(--accent); }
.tag-green { background: rgba(34,197,94,0.14); color: #4ade80; }
.tag-dim { background: var(--ink-600); color: var(--text-dim); }
.mock-plate { font-family: var(--font-mono); font-weight: 600; color: var(--white); letter-spacing: 0.05em; }
.mock-sub { font-size: 0.82rem; color: var(--text-faint); }

/* ---------- Cards / grids ---------- */
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.card {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255,255,255,0.02), transparent);
  padding: 26px; transition: border-color .2s, transform .2s;
}
.card:hover { border-color: var(--line-strong); transform: translateY(-3px); }
.card .ic {
  width: 44px; height: 44px; border-radius: 11px;
  display: inline-flex; align-items: center; justify-content: center;
  background: rgba(245,158,11,0.12); color: var(--accent); margin-bottom: 16px;
}
.card .ic svg { width: 22px; height: 22px; }
.card h3 { margin-bottom: 8px; color: var(--white); }
.card p { color: var(--text-dim); font-size: 0.95rem; }
.card ul { margin: 12px 0 0; padding: 0; list-style: none; }
.card ul li { position: relative; padding-left: 22px; margin-top: 8px; color: var(--text-dim); font-size: 0.92rem; }
.card ul li::before { content: ""; position: absolute; left: 0; top: 9px; width: 8px; height: 8px; border: 1.5px solid var(--accent); border-radius: 2px; transform: rotate(45deg); }

/* Pain block */
.pain { border-left: 2px solid var(--ink-600); padding: 6px 0 6px 22px; }
.pain h3 { font-size: 1rem; color: var(--white); display: flex; align-items: center; gap: 9px; }
.pain h3 svg { width: 18px; height: 18px; color: var(--accent); }
.pain p { color: var(--text-dim); font-size: 0.92rem; margin-top: 6px; }

/* ---------- Trust strip ---------- */
.strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--ink-800); }
.strip .wrap { display: flex; flex-wrap: wrap; gap: 34px; justify-content: space-between; padding-top: 30px; padding-bottom: 30px; }
.strip .item { display: flex; align-items: center; gap: 12px; }
.strip .item svg { width: 22px; height: 22px; color: var(--accent); flex: none; }
.strip .item b { color: var(--white); display: block; font-size: 0.98rem; }
.strip .item span { color: var(--text-faint); font-size: 0.84rem; }

/* ---------- Steps ---------- */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 22px; counter-reset: step; }
@media (max-width: 760px) { .steps { grid-template-columns: 1fr; } }
.step { border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; position: relative; }
.step .n { font-family: var(--font-mono); font-size: 2.4rem; font-weight: 600; color: var(--ink-600); line-height: 1; }
.step h3 { color: var(--white); margin: 12px 0 8px; }
.step p { color: var(--text-dim); font-size: 0.95rem; }

/* ---------- Pricing ---------- */
.pill { display: inline-block; background: var(--accent); color: var(--ink-900); font-family: var(--font-mono); font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; padding: 5px 13px; border-radius: 999px; }
.billing-switch { display: flex; justify-content: center; align-items: center; gap: 12px; flex-wrap: wrap; margin: 0 0 34px; }
.billing-switch .opts { position: relative; display: inline-flex; border: 1px solid var(--line); border-radius: 999px; padding: 4px; background: var(--ink-800); }
.billing-switch .opts::before { content: ''; position: absolute; top: 4px; bottom: 4px; left: 4px; width: calc(50% - 4px); border-radius: 999px; background: var(--accent); box-shadow: 0 6px 18px -8px rgba(245,158,11,0.9); transition: transform 0.32s cubic-bezier(0.34, 1.4, 0.5, 1); }
.billing-switch .opts.annual::before { transform: translateX(100%); }
.billing-switch button { position: relative; z-index: 1; flex: 1 0 auto; appearance: none; border: 0; background: none; cursor: pointer; color: var(--text-dim); font-family: var(--font-mono); font-size: 0.85rem; letter-spacing: 0.04em; padding: 10px 22px; border-radius: 999px; transition: color 0.2s; }
.billing-switch button:hover { color: var(--white); }
.billing-switch button.on { color: var(--ink-900); font-weight: 700; }
.billing-switch .pill { transition: opacity 0.25s, transform 0.25s; }
@keyframes priceIn { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }
.price.flip b, .price.flip span { animation: priceIn 0.3s cubic-bezier(0.2, 0.9, 0.3, 1); }
@media (prefers-reduced-motion: reduce) {
  .billing-switch .opts::before { transition: none; }
  .price.flip b, .price.flip span { animation: none; }
}
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; align-items: stretch; }
@media (max-width: 860px) { .plans { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; } }
.plan { border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; background: var(--ink-800); display: flex; flex-direction: column; }
.plan.featured { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent), 0 24px 60px -30px rgba(245,158,11,0.4); position: relative; }
.plan .badge { position: absolute; top: -12px; left: 30px; background: var(--accent); color: var(--ink-900); font-size: 0.72rem; font-weight: 700; font-family: var(--font-mono); letter-spacing: 0.1em; padding: 4px 12px; border-radius: 6px; text-transform: uppercase; }
.plan h3 { color: var(--white); font-size: 1.25rem; }
.plan .price { margin: 16px 0 4px; font-family: var(--font-mono); }
.plan .price b { font-size: 2.6rem; color: var(--white); font-weight: 600; }
.plan .price span { color: var(--text-faint); font-size: 0.95rem; }
.plan .desc { color: var(--text-dim); font-size: 0.9rem; min-height: 40px; }
.plan ul { list-style: none; padding: 0; margin: 22px 0; display: grid; gap: 11px; }
.plan ul li { position: relative; padding-left: 26px; color: var(--text-dim); font-size: 0.93rem; }
.plan ul li svg { position: absolute; left: 0; top: 3px; width: 16px; height: 16px; color: var(--accent); }
.plan .btn { width: 100%; justify-content: center; margin-top: auto; }

/* ---------- Compare table ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; min-width: 560px; }
th, td { text-align: left; padding: 15px 20px; border-bottom: 1px solid var(--line); font-size: 0.94rem; }
thead th { color: var(--white); font-family: var(--font-mono); font-size: 0.82rem; letter-spacing: 0.05em; text-transform: uppercase; }
tbody td { color: var(--text-dim); }
tbody td:first-child { color: var(--text); }
td svg { width: 17px; height: 17px; color: var(--accent); }
tr:last-child td { border-bottom: none; }

/* ---------- FAQ ---------- */
.faq { max-width: 760px; margin: 0 auto; }
.faq-item { border: 1px solid var(--line); border-radius: 12px; margin-bottom: 12px; overflow: hidden; }
.faq-q { width: 100%; text-align: left; background: none; border: none; color: var(--white); font-family: var(--font-sans); font-size: 1.02rem; font-weight: 500; padding: 20px 22px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.faq-q .chev { transition: transform .2s; color: var(--accent); flex: none; }
.faq-item.open .faq-q .chev { transform: rotate(180deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .28s ease; }
.faq-a p { padding: 0 22px 20px; color: var(--text-dim); font-size: 0.95rem; }

/* ---------- CTA band ---------- */
.cta-band { border: 1px solid var(--line-strong); border-radius: 20px; padding: 56px 40px; text-align: center; background:
  radial-gradient(ellipse 60% 120% at 50% 0%, rgba(245,158,11,0.14), transparent 70%), var(--ink-800); }
.cta-band h2 { margin-bottom: 14px; }
.cta-band p { color: var(--text-dim); max-width: 520px; margin: 0 auto 28px; }
.cta-band .btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---------- Feature detail rows ---------- */
.feat { display: grid; grid-template-columns: 44px 1fr; gap: 18px; padding: 26px 0; border-top: 1px solid var(--line); }
.feat:first-child { border-top: none; }
.feat .ic { width: 44px; height: 44px; border-radius: 11px; background: rgba(245,158,11,0.12); color: var(--accent); display: inline-flex; align-items: center; justify-content: center; }
.feat .ic svg { width: 22px; height: 22px; }
.feat h3 { color: var(--white); margin-bottom: 6px; }
.feat > div > p { color: var(--text-dim); margin-bottom: 10px; }
.feat ul { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
@media (max-width: 620px) { .feat ul { grid-template-columns: 1fr; } }
.feat ul li { position: relative; padding-left: 20px; color: var(--text-dim); font-size: 0.9rem; }
.feat ul li::before { content: ""; position: absolute; left: 0; top: 8px; width: 7px; height: 7px; background: var(--accent); border-radius: 50%; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 40px; }
@media (max-width: 780px) { .contact-grid { grid-template-columns: 1fr; } }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 0.82rem; color: var(--text-dim); margin-bottom: 7px; font-family: var(--font-mono); letter-spacing: 0.03em; }
.field input, .field textarea { width: 100%; background: var(--ink-800); border: 1px solid var(--line-strong); border-radius: 10px; padding: 12px 14px; color: var(--text); font-family: var(--font-sans); font-size: 0.96rem; }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--accent); }
.contact-info li { list-style: none; display: flex; gap: 13px; align-items: flex-start; margin-bottom: 20px; }
.contact-info ul { padding: 0; margin: 0; }
.contact-info svg { width: 20px; height: 20px; color: var(--accent); margin-top: 3px; flex: none; }
.contact-info b { color: var(--white); display: block; }
.contact-info span { color: var(--text-dim); font-size: 0.92rem; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--line); background: var(--ink-800); margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; padding: 56px 0 32px; }
@media (max-width: 720px) { .footer-grid { grid-template-columns: 1fr; gap: 28px; } }
.footer-grid h4 { color: var(--white); font-size: 0.82rem; font-family: var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; margin: 0 0 16px; }
.footer-grid a { display: block; color: var(--text-dim); font-size: 0.94rem; margin-bottom: 10px; }
.footer-grid a:hover { color: var(--accent); }
.footer-grid p { color: var(--text-faint); font-size: 0.9rem; max-width: 300px; }
.footer-bottom { border-top: 1px solid var(--line); padding: 20px 0; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; color: var(--text-faint); font-size: 0.85rem; font-family: var(--font-mono); }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Page hero (subpages) ---------- */
.page-hero { padding: 72px 0 44px; border-bottom: 1px solid var(--line); }
.page-hero h1 { margin: 16px 0 14px; }
.page-hero p { max-width: 600px; }