/* =========================================================
   ТЕХНОДРОМ — design tokens
   Dark underground × acid lime × TMNT masks
   ========================================================= */

:root {
  /* Core surfaces */
  --ink-000: #050705;           /* deepest shadow / void */
  --ink-050: #0a0d0a;           /* page base */
  --ink-100: #0f1411;           /* card base */
  --ink-200: #151b17;           /* elevated card */
  --ink-300: #1d241f;           /* hover surface */
  --ink-400: #2a322c;           /* divider / border hi */
  --ink-500: #3d4740;           /* muted text */
  --ink-600: #6b7a6f;           /* secondary text */
  --ink-700: #a8b5ac;           /* body text dim */
  --ink-800: #d6ddd8;           /* body text */
  --ink-900: #eef2ef;           /* heading text */

  /* Lime — primary acid */
  --lime-500: #c6ff3d;          /* signature acid lime */
  --lime-400: #d9ff6b;          /* hover lime */
  --lime-600: #a8e025;          /* pressed lime */
  --lime-700: #6b8f18;          /* deep lime */
  --lime-glow: 0 0 32px rgba(198, 255, 61, 0.35),
               0 0 80px rgba(198, 255, 61, 0.15);

  /* TMNT mask colors — функциональные маркеры услуг */
  --don-purple: #8b5cf6;        /* Донателло — tech / LLM */
  --leo-blue:   #3b82f6;        /* Лео — стратегия / QA */
  --raph-red:   #ef4444;        /* Рафаэль — данные / анти-фрод */
  --mike-orange:#ff8a3d;        /* Майки — контент / SMM */

  /* Semantic */
  --accent: var(--lime-500);
  --bg: var(--ink-050);
  --fg: var(--ink-900);
  --muted: var(--ink-600);
  --border: var(--ink-400);
  --surface: var(--ink-100);
  --surface-hi: var(--ink-200);

  /* Type */
  --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --font-body:    "Inter", system-ui, sans-serif;
  --font-mono:    "JetBrains Mono", "Fira Code", ui-monospace, monospace;

  /* Radii */
  --r-xs: 4px;
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 18px;
  --r-xl: 28px;

  /* Elevation */
  --shadow-sm: 0 1px 0 rgba(255,255,255,0.03) inset,
               0 2px 8px rgba(0,0,0,0.4);
  --shadow-md: 0 1px 0 rgba(255,255,255,0.04) inset,
               0 12px 40px rgba(0,0,0,0.5);
  --shadow-lime: 0 0 0 1px rgba(198,255,61,0.35),
                 0 10px 40px rgba(198,255,61,0.12);

  /* Spacing rhythm */
  --pad-page: clamp(20px, 4vw, 56px);
  --max-content: 1360px;
}

/* =========================================================
   Reset / base
   ========================================================= */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; overflow-x: hidden; }

/* Sticky header wrapper — sticky должен быть на самом #site-header,
   т.к. .site-header внутри маленького div не имеет пространства для stick */
#site-header {
  position: sticky;
  top: 0;
  z-index: 50;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
}

img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }

/* =========================================================
   Typography classes
   ========================================================= */
.display {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 0.92;
}
.mono { font-family: var(--font-mono); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--lime-500);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  display: inline-block;
  width: 22px;
  height: 2px;
  background: var(--lime-500);
  box-shadow: 0 0 12px var(--lime-500);
}

/* =========================================================
   Slash — диагональный графический язык
   ========================================================= */
.slash {
  display: inline-block;
  color: var(--lime-500);
  font-family: var(--font-mono);
  font-weight: 700;
  transform: skewX(-18deg);
  letter-spacing: -0.04em;
}

/* диагональные полосы как декор */
.slash-stripes {
  background-image: repeating-linear-gradient(
    -68deg,
    var(--lime-500) 0 2px,
    transparent 2px 10px
  );
}

/* =========================================================
   Buttons
   ========================================================= */
.btn {
  --btn-bg: var(--lime-500);
  --btn-fg: #0a0d0a;
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 14px 22px 14px 24px;
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
  transition: transform 0.18s ease, background 0.18s ease, box-shadow 0.18s ease;
}
.btn:hover { transform: translate(-2px, -2px); background: var(--lime-400); box-shadow: 6px 6px 0 0 var(--lime-700); }
.btn:active { transform: translate(0, 0); box-shadow: none; }

.btn-ghost {
  --btn-bg: transparent;
  --btn-fg: var(--ink-900);
  border: 1px solid var(--border);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
}
.btn-ghost:hover { background: var(--ink-200); box-shadow: none; transform: translate(0, 0); border-color: var(--lime-500); color: var(--lime-500); }

.btn svg { width: 14px; height: 14px; }

/* =========================================================
   Chips / badges
   ========================================================= */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border: 1px solid var(--ink-400);
  border-radius: 100px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-700);
  background: rgba(255,255,255,0.02);
}
.chip .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--lime-500);
  box-shadow: 0 0 10px var(--lime-500);
}
.chip.chip-don .dot   { background: var(--don-purple);  box-shadow: 0 0 10px var(--don-purple); }
.chip.chip-leo .dot   { background: var(--leo-blue);    box-shadow: 0 0 10px var(--leo-blue); }
.chip.chip-raph .dot  { background: var(--raph-red);    box-shadow: 0 0 10px var(--raph-red); }
.chip.chip-mike .dot  { background: var(--mike-orange); box-shadow: 0 0 10px var(--mike-orange); }

/* =========================================================
   Layout helpers
   ========================================================= */
.container {
  width: 100%;
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 0 var(--pad-page);
}

.section {
  padding: clamp(64px, 9vw, 140px) 0;
  position: relative;
}

.hr-slash {
  height: 1px;
  background: repeating-linear-gradient(
    90deg,
    var(--ink-400) 0 14px,
    transparent 14px 22px
  );
  margin: 0;
  border: 0;
}

/* Grid lines — фоновая техническая сетка */
.grid-bg {
  background-image:
    linear-gradient(to right, rgba(198,255,61,0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(198,255,61,0.04) 1px, transparent 1px);
  background-size: 80px 80px;
}

/* Scanline/noise (subtle) */
.noise::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    0deg,
    transparent 0 2px,
    rgba(255,255,255,0.012) 2px 3px
  );
  mix-blend-mode: overlay;
  z-index: 1;
}

/* =========================================================
   Cards
   ========================================================= */
.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 28px;
  overflow: hidden;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.card:hover { border-color: var(--lime-500); }

/* Cut-corner card */
.card-cut {
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
  border-radius: 0;
  border: none;
  background:
    linear-gradient(var(--surface), var(--surface)) padding-box,
    linear-gradient(135deg, var(--ink-400), var(--ink-300) 40%, var(--ink-400)) border-box;
}

/* Meta row with slash */
.meta-row {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-600);
}
.meta-row .sep { color: var(--lime-500); font-weight: 700; transform: skewX(-20deg); }

/* =========================================================
   Selection
   ========================================================= */
::selection { background: var(--lime-500); color: #050705; }