/* ============================================================
   Божевольный Сергей — PHP-разработчик
   Одностраничный лендинг. Дизайн-направление: technical-swiss
   ============================================================ */

/* OD-LAYOUT-PRIMITIVES v1 — structure only: display, flex/grid, overflow, wrapping, ratio.
   Put this @layer first; product CSS outside the layer always wins. */
@layer od-layout {
  :where(.od-stack,.od-row,.od-row-top,.od-cluster,.od-grid,.od-field,.od-stat,.od-cell,.od-tile) > :where(*) { min-width: 0; }

  /* containers */
  .od-stack   { display: flex; flex-direction: column; gap: var(--od-gap, 8px); }
  .od-row     { display: flex; align-items: center; gap: var(--od-gap, 8px); }
  .od-row-top { display: flex; align-items: flex-start; gap: var(--od-gap, 8px); }
  .od-cluster { display: flex; flex-wrap: wrap; align-items: center; gap: var(--od-gap, 8px); }
  .od-fill    { flex: 1 1 0; min-width: 0; }
  .od-fixed   { flex: none; }
  .od-grid    { display: grid; gap: var(--od-gap, 12px); grid-template-columns: repeat(var(--od-cols, 3), minmax(0, 1fr)); }

  /* stacked information: each piece is its own line — never sibling inline spans */
  .od-stat, .od-field, .od-cell { display: grid; gap: var(--od-gap, 2px); }
  :where(.od-stat,.od-field,.od-cell) > :where(*) { display: block; }
  .od-tile { display: grid; grid-template-rows: auto 1fr; }
  :where(.od-tile) > :where(*) { display: block; }

  /* media keeps its intrinsic ratio by default; never a distorted or cropped
     cover by accident. height:auto lets the ratio win over an <img height="…">
     attribute. Cropping to a uniform box is an explicit opt-in: set --od-ratio
     AND add .od-media-cover together (per the core rule, only where a crop is
     deliberate — tile thumbs, decorative fills — never on full-frame content). */
  .od-media { display: block; width: 100%; height: auto; aspect-ratio: var(--od-ratio, auto); }
  .od-media-cover { object-fit: cover; }

  /* data text only — authored copy is rewritten to its budget instead */
  .od-truncate { display: block; max-width: 100%; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
  .od-clamp-2, .od-clamp-3 { display: -webkit-box; -webkit-box-orient: vertical; overflow: hidden; overflow-wrap: anywhere; }
  .od-clamp-2 { -webkit-line-clamp: 2; }
  .od-clamp-3 { -webkit-line-clamp: 3; }
  .od-lines-2 { min-height: calc(2 * 1.4em); }   /* block-level reservation for a shared baseline */
  .od-nowrap  { white-space: nowrap; }           /* 数字+单位 · 价格+起 · 日期+星期 */
  .od-keep    { word-break: keep-all; overflow-wrap: anywhere; } /* CJK labels break at spaces / <wbr> first */

  /* screen skeleton (optional): bars take their own space, the middle scrolls — no padding guessed for chrome */
  .od-screen { display: grid; grid-template-rows: auto minmax(0, 1fr) auto; height: 100%; }
  .od-scroll { overflow-y: auto; overscroll-behavior: contain; min-height: 0; }

  /* horizontal rail: the next item peeks at the edge; trailing room survives overflow */
  .od-rail { display: flex; gap: var(--od-gap, 8px); overflow-x: auto; scroll-snap-type: x proximity; scrollbar-width: none;
             padding-inline: var(--od-rail-pad, 16px); scroll-padding-inline: var(--od-rail-pad, 16px); }
  .od-rail::-webkit-scrollbar { display: none; }
  :where(.od-rail) > :where(*) { flex: none; scroll-snap-align: start; }
  :where(.od-rail) > :where(:last-child) { margin-inline-end: var(--od-rail-pad, 16px); }

  .od-spacer { flex: none; visibility: hidden; pointer-events: none; }
  .od-touch  { min-width: 44px; min-height: 44px; }
}
/* /OD-LAYOUT-PRIMITIVES v1 */

/* ============================================================
   1. ТОКЕНЫ
   ============================================================ */
:root {
  /* palette */
  --ground:        #F4F5F7;
  --surface:       #FFFFFF;
  --ink:           #12141A;
  --ink-muted:     #515863;
  --line:          #DCE0E6;
  --line-strong:   #C3C9D3;
  --accent:        #D33F1F;
  --accent-ink:    #FFFFFF;
  --accent-soft:   #FBEDEA;

  --code-surface:  #14161C;
  --code-ink:      #E7E9EE;
  --dark-surface:  #14161C;
  --dark-raised:   #1D2029;
  --dark-line:     #2E3340;
  --dark-ink:      #E7E9EE;
  --dark-ink-muted:#A7AEBF;
  --focus-color:   var(--accent);
  --focus-color-dark: #FF8A6B;

  /* type */
  --font-display: "Onest", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-body:    var(--font-display);
  --font-mono:    "JetBrains Mono", ui-monospace, SFMono-Regular, "Cascadia Mono", Consolas, "Liberation Mono", monospace;

  --fs-body:      17px;
  --fs-body-sm:   15px;
  --fs-caption:   13px;
  --fs-eyebrow:   12.5px;
  --fs-code:      13px;
  --fs-h3:        22px;
  --fs-h2:        clamp(28px, 3.2vw, 40px);
  --fs-h1:        clamp(34px, 5.4vw, 60px);

  --lh-body:      1.65;
  --lh-tight:     1.15;
  --measure:      68ch;

  /* spacing */
  --sp-1:  4px;
  --sp-2:  8px;
  --sp-3:  12px;
  --sp-4:  16px;
  --sp-5:  24px;
  --sp-6:  32px;
  --sp-7:  48px;
  --sp-8:  64px;
  --sp-9:  96px;
  --sp-10: 128px;

  /* radius */
  --r-control: 4px;
  --r-card:    8px;
  --r-pill:    999px;

  /* chrome */
  --header-h: 60px;
  --container: 1180px;
  --gutter:    20px;

  /* motion */
  --dur-micro: 180ms;
  --dur-enter: 240ms;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ============================================================
   2. БАЗА
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + var(--sp-4));
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, p, dl, dd, figure, ol, ul, pre { margin: 0; }
ol, ul { padding: 0; list-style: none; }

a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }

img, svg { max-width: 100%; }

svg {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: none;
}

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

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 12px 16px;
  background: var(--ink);
  color: var(--surface);
  font-size: var(--fs-body-sm);
  font-weight: 500;
}
.skip-link:focus {
  left: 8px;
  top: 8px;
}

/* ============================================================
   3. ШАПКА
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

.header-bar {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  min-height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  flex: none;
}
.brand:hover { color: var(--ink); }

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--ink);
  border-radius: var(--r-control);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.04em;
  color: var(--accent);
}

.brand-text { display: grid; gap: 1px; }
.brand-name {
  display: block;
  font-size: var(--fs-body-sm);
  font-weight: 600;
  line-height: 1.2;
}
.brand-role {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.3;
  color: var(--ink-muted);
}

.nav { display: flex; align-items: center; gap: var(--sp-5); margin-left: auto; }
.nav-title { display: none; }

.nav-list { display: flex; align-items: center; gap: var(--sp-5); }

.nav-link {
  display: block;
  padding-block: 6px;
  font-size: var(--fs-body-sm);
  font-weight: 500;
  color: var(--ink-muted);
  text-decoration: underline;
  text-decoration-color: transparent;
  text-decoration-thickness: 2px;
  text-underline-offset: 6px;
  transition: color var(--dur-micro) var(--ease),
              text-decoration-color var(--dur-micro) var(--ease);
}
.nav-link:hover { color: var(--accent); text-decoration-color: var(--accent); }
.nav-link[aria-current="true"] {
  color: var(--ink);
  text-decoration-color: var(--accent);
}

.btn-nav { display: none; }

.menu-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  min-height: 44px;
  margin-left: auto;
  padding: 0 var(--sp-3);
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-control);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--fs-caption);
  font-weight: 500;
  cursor: pointer;
}
.menu-toggle:hover { border-color: var(--ink); }

@media (hover: hover) {
  .menu-toggle:hover { color: var(--accent); }
}

/* мобильная панель навигации — в потоке, без наложения */
@media (max-width: 900px) {
  .header-bar { flex-wrap: wrap; row-gap: 0; }

  .nav {
    display: none;
    flex-basis: 100%;
    order: 3;
    margin-left: 0;
    padding-block: var(--sp-4) var(--sp-5);
    border-top: 1px solid var(--line);
  }
  .nav.is-open { display: block; animation: nav-in var(--dur-enter) var(--ease) both; }

  .nav-title {
    display: block;
    margin-bottom: var(--sp-2);
    font-family: var(--font-mono);
    font-size: 11.5px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ink-muted);
  }
  .nav-list { display: grid; gap: 2px; }
  .nav-link { padding-block: 10px; font-size: 16px; }
  .btn-nav { display: inline-flex; margin-top: var(--sp-4); }
}

@keyframes nav-in {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (min-width: 901px) {
  .menu-toggle { display: none; }
  .btn-nav { display: inline-flex; }
}

/* ============================================================
   4. КНОПКИ
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  min-height: 46px;
  padding: 0 var(--sp-5);
  border: 1px solid transparent;
  border-radius: var(--r-control);
  font-family: var(--font-body);
  font-size: var(--fs-body-sm);
  font-weight: 600;
  line-height: 1.2;
  text-align: center;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color var(--dur-micro) var(--ease),
              border-color var(--dur-micro) var(--ease),
              color var(--dur-micro) var(--ease);
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}
.btn-primary:hover { background: #B73316; border-color: #B73316; color: var(--accent-ink); }

.btn-ghost {
  background: var(--surface);
  border-color: var(--line-strong);
  color: var(--ink);
}
.btn-ghost:hover { border-color: var(--ink); color: var(--ink); }

.btn-invert {
  background: var(--dark-ink);
  border-color: var(--dark-ink);
  color: var(--dark-surface);
}
.btn-invert:hover { background: #FFFFFF; border-color: #FFFFFF; color: var(--dark-surface); }

.btn-quiet {
  background: transparent;
  border-color: var(--dark-line);
  color: var(--dark-ink-muted);
}
.btn-quiet:hover { border-color: var(--dark-ink-muted); color: var(--dark-ink); }

.btn-sm { min-height: 40px; padding: 0 var(--sp-4); font-size: var(--fs-caption); }

.btn[disabled] { cursor: not-allowed; opacity: 0.7; }

/* ============================================================
   5. HERO
   ============================================================ */
.hero { padding-block: var(--sp-7) var(--sp-8); }

.hero-grid { display: grid; gap: var(--sp-7); }

.eyebrow {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  flex: none;
}

.hero-title {
  margin-top: var(--sp-4);
  font-size: var(--fs-h1);
  font-weight: 800;
  line-height: var(--lh-tight);
  letter-spacing: -0.02em;
  text-wrap: balance;
  max-width: 18ch;
}
.hero-title em {
  font-style: normal;
  border-bottom: 0.09em solid var(--accent);
}

.hero-lead {
  margin-top: var(--sp-5);
  max-width: var(--measure);
  font-size: 18px;
  color: var(--ink-muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  margin-top: var(--sp-6);
}

.hero-note {
  margin-top: var(--sp-3);
  max-width: 46ch;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--ink-muted);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--sp-5) var(--sp-4);
  margin-top: var(--sp-7);
  padding-top: var(--sp-5);
  border-top: 1px solid var(--line);
}

.stat { --od-gap: 2px; }
.stat-value {
  display: block;
  font-size: 24px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.stat-caption {
  display: block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.4;
  color: var(--ink-muted);
}

/* код-панель */
.code-card {
  background: var(--code-surface);
  border: 1px solid var(--code-surface);
  border-radius: var(--r-card);
  overflow: hidden;
  box-shadow: 0 18px 40px -28px rgba(18, 20, 26, 0.7);
}

.code-bar {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  border-bottom: 1px solid var(--dark-line);
  background: var(--dark-raised);
}

.code-dots { display: inline-flex; gap: 6px; }
.code-dots i { width: 8px; height: 8px; border-radius: 50%; background: #3A4152; }
.code-dots i:first-child { background: #55607040; border: 1px solid #4C556A; }

.code-name {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--dark-ink-muted);
  overflow-wrap: anywhere;
}

.code-body {
  margin: 0;
  padding: var(--sp-4);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: var(--fs-code);
  line-height: 1.75;
  color: var(--code-ink);
  tab-size: 2;
}
.code-body code { font: inherit; }

.c-key  { color: #FF9E7A; }
.c-cls  { color: #8FD0FF; }
.c-fn   { color: #C6E88A; }
.c-type { color: #D6A9FF; }
.c-str  { color: #9FE0C8; }
.c-prop { color: #F0C987; }
.c-var  { color: var(--code-ink); }
.c-num  { color: #F0C987; }

.code-caption {
  padding: 0 var(--sp-4) var(--sp-4);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  color: var(--dark-ink-muted);
}

@media (min-width: 700px) {
  .code-body { font-size: 13.5px; }
}

@media (min-width: 1024px) {
  .hero { padding-block: var(--sp-8) var(--sp-9); }
  .hero-grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
    gap: var(--sp-8);
    align-items: start;
  }
  .hero-title { max-width: 15ch; }
  .hero-stats { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

/* ============================================================
   6. СЕКЦИИ
   ============================================================ */
.section { padding-block: var(--sp-7); }
.section-alt {
  background: var(--surface);
  border-block: 1px solid var(--line);
}

.section-head { max-width: 62ch; margin-bottom: var(--sp-6); }

.section-title {
  margin-top: var(--sp-3);
  font-size: var(--fs-h2);
  font-weight: 800;
  line-height: var(--lh-tight);
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.section-lead {
  margin-top: var(--sp-4);
  color: var(--ink-muted);
  text-wrap: pretty;
}

/* ---- услуги ---- */
.services-grid { --od-cols: 1; --od-gap: var(--sp-4); }

.service {
  display: grid;
  align-content: start;
  gap: var(--sp-3);
  padding: var(--sp-5);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  transition: border-color var(--dur-micro) var(--ease);
}
@media (hover: hover) {
  .service:hover { border-color: var(--ink); }
}

.service-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.08em;
}

.service-title { font-size: var(--fs-h3); font-weight: 700; line-height: 1.25; letter-spacing: -0.01em; }
.service-text { color: var(--ink-muted); }

.tag-row { display: flex; flex-wrap: wrap; gap: var(--sp-2); margin-top: var(--sp-1); }

.tag {
  display: block;
  padding: 3px var(--sp-2);
  border: 1px solid var(--line);
  border-radius: var(--r-control);
  background: var(--ground);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  color: var(--ink-muted);
  white-space: nowrap;
}

/* ---- проекты: фильтр ---- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-bottom: var(--sp-3);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 38px;
  padding: 0 var(--sp-4);
  background: var(--ground);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-pill);
  color: var(--ink-muted);
  font-family: var(--font-body);
  font-size: var(--fs-caption);
  font-weight: 500;
  cursor: pointer;
  transition: background-color var(--dur-micro) var(--ease),
              border-color var(--dur-micro) var(--ease),
              color var(--dur-micro) var(--ease);
}
.chip::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  border: 1px solid currentColor;
}
.chip:hover { border-color: var(--ink); color: var(--ink); }
.chip.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--surface);
  font-weight: 600;
}
.chip.is-active::before { background: var(--accent); border-color: var(--accent); }

.filter-status {
  margin-bottom: var(--sp-5);
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--ink-muted);
}

.cases-grid { display: grid; gap: var(--sp-4); }

.case {
  display: grid;
  align-content: start;
  gap: var(--sp-3);
  padding: var(--sp-5);
  background: var(--ground);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
}
.case[hidden] { display: none; }

.case-meta { display: flex; flex-wrap: wrap; align-items: center; gap: var(--sp-2); }

.badge {
  display: inline-block;
  padding: 2px var(--sp-2);
  border: 1px solid var(--accent);
  border-radius: var(--r-control);
  background: var(--accent-soft);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  line-height: 1.5;
  color: #A32C10;
  text-transform: lowercase;
}

/* метка реального проекта: обычный регистр, нейтральный тон вместо акцента */
.badge-example {
  background: var(--surface);
  border-color: var(--line-strong);
  color: var(--ink-muted);
  text-transform: none;
}

.case-cat {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.case-title { font-size: var(--fs-h3); font-weight: 700; line-height: 1.25; letter-spacing: -0.01em; }

.case-facts { display: grid; gap: var(--sp-3); padding-block: var(--sp-2); }
.case-facts .od-field { --od-gap: 1px; }
.case-facts dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.case-facts dd { font-size: var(--fs-body-sm); line-height: 1.55; }

/* ссылка на репозиторий — последняя строка карточки */
.case-link {
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  transition: color var(--dur-micro) var(--ease);
}
.case-link::after {
  content: "↗";
  font-size: 13px;
  line-height: 1;
}
.case-link:hover { color: var(--ink); }

.cases-empty {
  padding: var(--sp-5);
  border: 1px dashed var(--line-strong);
  border-radius: var(--r-card);
  color: var(--ink-muted);
  text-align: center;
}

/* ---- процесс ---- */
.process { display: grid; gap: var(--sp-5); }
.process-step { --od-gap: var(--sp-2); padding-top: var(--sp-4); border-top: 2px solid var(--ink); }

.step-num {
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.08em;
}
.step-title { font-size: var(--fs-h3); font-weight: 700; line-height: 1.25; }
.step-text { color: var(--ink-muted); }

/* ---- стек ---- */
.stack-rail { --od-gap: var(--sp-2); --od-rail-pad: 0; }

.stack-item {
  display: block;
  padding: 9px var(--sp-3);
  background: var(--ground);
  border: 1px solid var(--line);
  border-radius: var(--r-control);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.4;
  color: var(--ink);
  white-space: nowrap;
}

/* ---- опыт работы ---- */
.timeline { display: grid; gap: var(--sp-5); margin: 0; padding: 0; list-style: none; }
.timeline-item {
  --od-gap: var(--sp-2);
  padding-top: var(--sp-4);
  border-top: 2px solid var(--ink);
}

.timeline-dates {
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.04em;
}
.timeline-role { font-size: var(--fs-h3); font-weight: 700; line-height: 1.25; }
.timeline-org { font-size: var(--fs-body-sm); font-weight: 500; color: var(--ink); }
.timeline-text { color: var(--ink-muted); }
.timeline-item .tag-row { margin-top: var(--sp-1); }

.exp-facts {
  display: grid;
  gap: var(--sp-4);
  margin-top: var(--sp-6);
  padding-top: var(--sp-5);
  border-top: 1px solid var(--line-strong);
}
.exp-facts dt {
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  font-weight: 500;
  color: var(--ink-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.exp-facts dd { font-size: var(--fs-body-sm); line-height: 1.55; color: var(--ink); }

/* ============================================================
   7. КОНТАКТ
   ============================================================ */
.contact {
  padding-block: var(--sp-8);
  background: var(--dark-surface);
  color: var(--dark-ink);
  --focus-color: var(--focus-color-dark);
  --ground: var(--dark-raised);
  --line: var(--dark-line);
  --ink: var(--dark-ink);
  --ink-muted: var(--dark-ink-muted);
}

.contact-grid { display: grid; gap: var(--sp-7); }

.eyebrow-invert { color: var(--dark-ink-muted); }

.contact-title {
  margin-top: var(--sp-3);
  font-size: var(--fs-h2);
  font-weight: 800;
  line-height: var(--lh-tight);
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.contact-lead {
  margin-top: var(--sp-4);
  max-width: 46ch;
  color: var(--dark-ink-muted);
}

.contact-subtitle {
  margin-top: var(--sp-7);
  margin-bottom: var(--sp-3);
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--dark-ink-muted);
}

.check-list { display: grid; gap: var(--sp-3); }
.check-item {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  align-items: start;
  gap: var(--sp-3);
  font-size: var(--fs-body-sm);
  line-height: 1.5;
  color: var(--dark-ink);
}
.check-item svg { margin-top: 3px; color: var(--accent); }

.contact-details {
  display: grid;
  gap: var(--sp-4);
  margin-top: var(--sp-7);
  padding-top: var(--sp-5);
  border-top: 1px solid var(--dark-line);
}
.detail { --od-gap: 2px; }
.detail dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--dark-ink-muted);
}
.detail dd { font-size: var(--fs-body-sm); line-height: 1.5; }
.detail-link {
  text-decoration: underline;
  text-decoration-color: var(--focus-color-dark);
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}
.detail-link:hover { color: var(--focus-color-dark); }

/* ---- форма ---- */
.contact-form-wrap { display: grid; }

.contact-form {
  display: grid;
  gap: var(--sp-4);
  padding: var(--sp-5);
  background: var(--dark-raised);
  border: 1px solid var(--dark-line);
  border-radius: var(--r-card);
}

.form-field { display: grid; gap: 6px; }

.form-label {
  font-size: var(--fs-body-sm);
  font-weight: 500;
  color: var(--dark-ink);
}

.req { color: var(--focus-color-dark); }

.form-input {
  width: 100%;
  min-height: 46px;
  padding: 10px var(--sp-3);
  background: #161922;
  border: 1px solid var(--dark-line);
  border-radius: var(--r-control);
  color: var(--dark-ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  transition: border-color var(--dur-micro) var(--ease);
}
.form-input::placeholder { color: #6E7688; }
.form-input:hover { border-color: #3D4454; }
.form-input:focus-visible { border-color: var(--focus-color-dark); }
.form-input[aria-invalid="true"] { border-color: #FF8A6B; }

.form-textarea { min-height: 124px; resize: vertical; }

.select-wrap { position: relative; }
.select-wrap::after {
  content: "";
  position: absolute;
  right: 14px;
  top: 50%;
  width: 7px;
  height: 7px;
  border-right: 1.5px solid var(--dark-ink-muted);
  border-bottom: 1.5px solid var(--dark-ink-muted);
  transform: translateY(-70%) rotate(45deg);
  pointer-events: none;
}
.form-select {
  appearance: none;
  padding-right: var(--sp-7);
  cursor: pointer;
}
.form-select option { background: #161922; color: var(--dark-ink); }

.form-hint { font-size: 13px; line-height: 1.5; color: var(--dark-ink-muted); }

.form-error[hidden] { display: none; }
.form-error {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  font-size: 13px;
  line-height: 1.5;
  color: #FFA98F;
}
.form-error::before {
  content: "!";
  display: grid;
  place-items: center;
  flex: none;
  width: 15px;
  height: 15px;
  margin-top: 2px;
  border: 1px solid #FFA98F;
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1;
}

.form-summary[hidden] { display: none; }
.form-summary {
  padding: var(--sp-3) var(--sp-4);
  background: #2A1A16;
  border: 1px solid #7A3A28;
  border-left-width: 3px;
  border-radius: var(--r-control);
}
.form-summary-title {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--fs-body-sm);
  font-weight: 600;
  color: #FFC0AB;
}
.form-summary-list {
  display: grid;
  gap: 4px;
  margin-top: var(--sp-2);
  padding-left: 26px;
  list-style: disc;
}
.form-summary-list a { color: #FFC0AB; text-decoration: underline; text-underline-offset: 3px; }
.form-summary-list a:hover { color: #FFFFFF; }

.btn-submit { width: 100%; margin-top: var(--sp-1); }
.btn-submit.is-busy { position: relative; }
.btn-submit.is-busy .btn-icon { animation: spin 900ms linear infinite; }

@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

.form-privacy {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  color: var(--dark-ink-muted);
}

.form-status:empty { display: none; }
.form-status {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--dark-ink-muted);
}
.form-status.is-error { color: #FFC0AB; }

/* состояние «заявка собрана» — поля уступают место готовому тексту заявки */
.contact-form.is-done .form-field,
.contact-form.is-done .form-summary,
.contact-form.is-done .btn-submit,
.contact-form.is-done .form-privacy { display: none; }

.form-result[hidden] { display: none; }
.form-result {
  display: grid;
  gap: var(--sp-3);
  padding: var(--sp-4);
  background: #161922;
  border: 1px solid #3D4454;
  border-radius: var(--r-control);
}
.form-result-title { font-size: var(--fs-body-sm); font-weight: 600; color: var(--dark-ink); }
.form-result-body {
  margin: 0;
  max-height: 190px;
  overflow: auto;
  padding: var(--sp-3);
  background: #0F1116;
  border: 1px solid var(--dark-line);
  border-radius: var(--r-control);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--code-ink);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.form-result-actions { display: flex; flex-wrap: wrap; gap: var(--sp-2); }

@media (min-width: 1024px) {
  .contact { padding-block: var(--sp-9); }
  .contact-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: var(--sp-8);
    align-items: start;
  }
}

/* ============================================================
   8. ПОДВАЛ
   ============================================================ */
.site-footer {
  padding-block: var(--sp-6);
  background: #0F1116;
  color: var(--dark-ink-muted);
  border-top: 1px solid var(--dark-line);
  --focus-color: var(--focus-color-dark);
}

.footer-bar { display: grid; gap: var(--sp-4); }

.footer-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--fs-body-sm);
}
.footer-name { color: var(--dark-ink); font-weight: 600; }
.footer-sep { color: #4C556A; }

.footer-nav { display: flex; flex-wrap: wrap; gap: var(--sp-2) var(--sp-5); }
.footer-nav a {
  font-size: var(--fs-body-sm);
  text-decoration: underline;
  text-decoration-color: #3D4454;
  text-underline-offset: 4px;
}
.footer-nav a:hover { color: var(--dark-ink); text-decoration-color: var(--dark-ink); }

.footer-note {
  padding-top: var(--sp-4);
  border-top: 1px solid var(--dark-line);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  color: #6E7688;
}

/* ============================================================
   9. АДАПТИВ
   ============================================================ */
@media (min-width: 768px) {
  :root { --gutter: 32px; --header-h: 68px; }

  .hero-stats { gap: var(--sp-5); }
  .hero-lead { font-size: 19px; }
  .hero-stats { grid-template-columns: repeat(4, minmax(0, 1fr)); }

  .services-grid { --od-cols: 2; --od-gap: var(--sp-5); }

  .cases-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .process { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--sp-6) var(--sp-5); }

  .timeline { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--sp-6) var(--sp-5); }
  .exp-facts { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--sp-5); }

  .stack-rail {
    display: flex;
    flex-wrap: wrap;
    overflow: visible;
    gap: var(--sp-2);
  }
  .stack-item { white-space: normal; }

  .contact-form { padding: var(--sp-6); }
  .footer-bar { grid-template-columns: minmax(0, 1fr) auto; align-items: center; }
  .footer-nav { justify-self: end; }
  .footer-note { grid-column: 1 / -1; }
}

@media (min-width: 1200px) {
  :root { --gutter: 40px; }
  .section { padding-block: var(--sp-9); }
  .process { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .cases-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 1440px) {
  :root { --gutter: 48px; }
}

/* ============================================================
   10. ДОСТУПНОСТЬ: ФОКУС И ДВИЖЕНИЕ
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media (prefers-contrast: more) {
  :root { --ink-muted: #33373F; --line: #9AA1AD; --line-strong: #6B7280; }
}