/* ========================================
   ADD3D — стили сайта
   Файл: style.css
   ======================================== */

/* ---------- Переменные и сброс ---------- */
:root {
  --paper: #F3F5F7;
  --ink: #15191E;
  --steel: #56616C;
  --line: #D8DDE2;
  --laser: #FF4D17;
  --white: #FFFFFF;
  --dark: #14181D;
  --dark-line: #2A313A;
  --max: 1180px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}

body {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  background: var(--paper);
  color: var(--ink);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Утилиты ---------- */
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
h1, h2, h3 { font-family: 'Unbounded', sans-serif; font-weight: 700; line-height: 1.15; }
h2 { font-size: clamp(24px, 3vw, 36px); max-width: 760px; }
.mono { font-family: 'IBM Plex Mono', monospace; }
a { color: inherit; }
.sub { font-size: 18px; color: var(--steel); max-width: 680px; margin-top: 18px; }
section { padding: 88px 0; }

/* ---------- Кнопки ---------- */
.btn {
  display: inline-block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  padding: 16px 28px;
  border: 1.5px solid var(--ink);
  background: var(--ink);
  color: var(--white);
  cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
}
.btn:hover { background: var(--laser); border-color: var(--laser); }
.btn--ghost { background: transparent; color: var(--ink); }
.btn--ghost:hover { background: var(--ink); color: var(--white); }
.btn--laser { background: var(--laser); border-color: var(--laser); }
.btn--laser:hover { background: var(--ink); border-color: var(--ink); }

/* ---------- Eyebrow ---------- */
.eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--steel);
  margin-bottom: 18px;
}
.eyebrow::before { content: "// "; color: var(--laser); }

/* ---------- Header ---------- */
header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(243, 245, 247, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 66px; }
.logo { font-family: 'Unbounded', sans-serif; font-weight: 700; font-size: 20px; text-decoration: none; }
.logo span { color: var(--laser); }
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a { font-size: 15px; text-decoration: none; color: var(--steel); }
.nav-links a:hover { color: var(--ink); }
.nav-cta { font-family: 'IBM Plex Mono', monospace; font-size: 14px; padding: 10px 18px; border: 1.5px solid var(--ink); text-decoration: none; }
.nav-cta:hover { background: var(--laser); border-color: var(--laser); color: var(--white); }
@media (max-width: 860px) { .nav-links a:not(.nav-cta) { display: none; } }

/* ---------- Hero ---------- */
.hero { padding: 72px 0 80px; border-bottom: 1px solid var(--line); }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.hero h1 { font-size: clamp(30px, 4.2vw, 52px); margin-bottom: 24px; }
.hero h1 em { font-style: normal; color: var(--laser); }
.hero p.lead { font-size: 19px; color: var(--steel); max-width: 520px; margin-bottom: 36px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-draw { position: relative; }
.hero-draw svg { width: 100%; height: auto; display: block; }
@media (max-width: 920px) { .hero-grid { grid-template-columns: 1fr; } .hero-draw { max-width: 560px; } }

/* ---------- Spec strip ---------- */
.specs {
  border-bottom: 1px solid var(--line);
  background: var(--white);
  padding: 0;
}
.specs .wrap { display: grid; grid-template-columns: repeat(5, 1fr); }
.spec { padding: 26px 20px; border-left: 1px solid var(--line); }
.spec:first-child { border-left: none; }
.spec b { display: block; font-family: 'IBM Plex Mono', monospace; font-size: 22px; font-weight: 500; margin-bottom: 4px; }
.spec span { font-size: 13px; color: var(--steel); text-transform: uppercase; letter-spacing: .05em; }
@media (max-width: 860px) {
  .specs .wrap { grid-template-columns: repeat(2, 1fr); }
  .spec { border-top: 1px solid var(--line); }
  .spec:nth-child(-n+2) { border-top: none; }
  .spec:nth-child(odd) { border-left: none; }
}

/* ---------- Products / Cards ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 48px; }
.card { background: var(--white); padding: 32px 28px; }
.card h3 { font-size: 17px; margin-bottom: 12px; }
.card p { font-size: 15px; color: var(--steel); }
.card .mono { display: block; font-size: 12.5px; color: var(--laser); margin-top: 16px; }
@media (max-width: 920px) { .cards { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .cards { grid-template-columns: 1fr; } }

/* ---------- Comparison (dark) ---------- */
.dark { background: var(--dark); color: var(--white); }
.dark .eyebrow { color: #8B96A1; }
.dark h2 { color: var(--white); }
.dark .sub { color: #8B96A1; }
.table-scroll { overflow-x: auto; margin-top: 48px; }
table { width: 100%; border-collapse: collapse; min-width: 720px; }
th, td { padding: 18px 20px; text-align: left; border: 1px solid var(--dark-line); font-size: 15.5px; vertical-align: top; }
th { font-family: 'IBM Plex Mono', monospace; font-weight: 500; font-size: 14px; text-transform: uppercase; letter-spacing: .05em; color: #8B96A1; }
td:first-child { color: #8B96A1; font-size: 14.5px; width: 24%; }
.col-hl { background: rgba(255, 77, 23, .07); }
th.col-hl { color: var(--laser); }
td .yes { color: var(--laser); font-family: 'IBM Plex Mono', monospace; }

/* ---------- Technologies ---------- */
.tech-list { margin-top: 48px; border-top: 1px solid var(--line); }
.tech {
  display: grid;
  grid-template-columns: 200px 1fr 320px;
  gap: 32px;
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}
.tech h3 { font-size: 18px; }
.tech p { font-size: 15.5px; color: var(--steel); }
.tech .mats { font-family: 'IBM Plex Mono', monospace; font-size: 13px; color: var(--ink); }
.tech .mats i { font-style: normal; color: var(--laser); }
@media (max-width: 920px) { .tech { grid-template-columns: 1fr; gap: 8px; } }

/* ---------- Process ---------- */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 48px; counter-reset: step; }
.step { background: var(--white); padding: 28px 22px; counter-increment: step; }
.step::before {
  content: "0" counter(step);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  color: var(--laser);
  display: block;
  margin-bottom: 14px;
}
.step h3 { font-size: 15.5px; margin-bottom: 10px; }
.step p { font-size: 14px; color: var(--steel); }
@media (max-width: 980px) { .steps { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }

/* ---------- Trust ---------- */
.trust-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px 48px; margin-top: 48px; }
.trust h3 { font-size: 16px; margin-bottom: 10px; padding-top: 14px; border-top: 2px solid var(--ink); }
.trust p { font-size: 15px; color: var(--steel); }
@media (max-width: 860px) { .trust-grid { grid-template-columns: 1fr; } }

/* ---------- Quote form ---------- */
.quote { background: var(--dark); color: var(--white); }
.quote-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 64px; align-items: start; }
.quote h2 { color: var(--white); }
.quote .sub { color: #8B96A1; }
.quote-contacts { margin-top: 36px; font-family: 'IBM Plex Mono', monospace; font-size: 15px; line-height: 2.2; }
.quote-contacts a { color: var(--white); text-decoration: none; border-bottom: 1px solid var(--dark-line); }
.quote-contacts a:hover { border-color: var(--laser); color: var(--laser); }
form { display: grid; gap: 16px; }
.f-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 560px) { .f-row { grid-template-columns: 1fr; } }
label { font-family: 'IBM Plex Mono', monospace; font-size: 12.5px; text-transform: uppercase; letter-spacing: .06em; color: #8B96A1; display: block; margin-bottom: 6px; }
input, select, textarea {
  width: 100%;
  background: transparent;
  border: 1px solid var(--dark-line);
  color: var(--white);
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 16px;
  padding: 13px 14px;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--laser); outline-offset: -1px; border-color: var(--laser); }
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='%238B96A1' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
}
select option { background: var(--dark); }
textarea { min-height: 96px; resize: vertical; }
.file-drop {
  border: 1px dashed var(--dark-line);
  padding: 22px;
  text-align: center;
  font-size: 14.5px;
  color: #8B96A1;
  cursor: pointer;
  transition: border-color .15s;
}
.file-drop:hover { border-color: var(--laser); }
.file-drop input { display: none; }
.file-drop .mono { color: var(--white); font-size: 13px; }
.form-note { font-size: 13px; color: #8B96A1; }
.form-ok {
  display: none;
  border: 1px solid var(--laser);
  padding: 18px;
  font-size: 15px;
}

/* ---------- Footer ---------- */
footer { border-top: 1px solid var(--line); padding: 36px 0; font-size: 14px; color: var(--steel); }
footer .wrap { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
footer .mono { font-size: 12.5px; }