/* ==========================================================================
   GGLM — Design tokens
   Единая цветовая/типографическая система. Меняешь бренд — меняешь этот блок.
   ========================================================================== */
:root {
  /* Цвета */
  --color-bg: #050505;
  --color-bg-elevated: #0b0c0d;
  --color-surface: #121214;
  --color-surface-hover: #171719;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-hover: rgba(0, 255, 136, 0.5);
  --color-accent: #00ff88;
  --color-accent-soft: rgba(0, 255, 136, 0.1);
  --color-accent-dim: rgba(0, 255, 136, 0.35);
  --color-text: #f2f3f5;
  --color-text-secondary: #9a9fa8;
  --color-text-muted: #55595f;
  --color-danger: #ff5c5c;

  /* Типографика */
  --font-display: 'Inter', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'Inter', sans-serif;

  /* Форма */
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==========================================================================
   Базовые стили
   ========================================================================== */
* { box-sizing: border-box; }

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

::selection {
  background: var(--color-accent);
  color: #000;
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--color-bg-elevated); }
::-webkit-scrollbar-thumb { background: #2a2a2c; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-accent); }

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

h1, h2, h3, h4 { font-family: var(--font-display); letter-spacing: -0.02em; }

/* Мелкие лейблы капсом — "инженерная" деталь бренда */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.text-glow { text-shadow: 0 0 24px rgba(0, 255, 136, 0.35); }

/* ==========================================================================
   Навигация
   ========================================================================== */
.nav-link { position: relative; }
.nav-link::after {
  content: '';
  position: absolute;
  width: 0;
  height: 1px;
  bottom: -4px;
  left: 0;
  background-color: var(--color-accent);
  transition: width 0.3s var(--ease);
}
.nav-link:hover::after { width: 100%; }

.logo-svg path { fill: var(--color-accent) !important; }

/* ==========================================================================
   Кнопки
   ========================================================================== */
.btn-primary {
  padding: 1rem 2rem;
  background-color: var(--color-accent);
  color: #000;
  font-weight: 700;
  border-radius: 9999px;
  transition: transform 0.25s var(--ease), background-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
  box-shadow: 0 0 0 rgba(0, 255, 136, 0);
  display: inline-block;
}
.btn-primary:hover {
  background-color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 12px 30px -8px rgba(0, 255, 136, 0.45);
}

.btn-secondary {
  padding: 1rem 2rem;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-weight: 500;
  border-radius: 9999px;
  transition: all 0.25s var(--ease);
  display: inline-block;
}
.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-nav {
  background-color: var(--color-accent);
  color: #000;
  padding: 0.5rem 1.25rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 700;
  transition: background-color 0.25s var(--ease);
}
.btn-nav:hover { background-color: #fff; }

.btn-submit {
  width: 100%;
  background-color: var(--color-accent);
  color: #000;
  font-weight: 700;
  padding: 1rem;
  border-radius: var(--radius-sm);
  transition: transform 0.2s var(--ease), background-color 0.2s var(--ease);
  box-shadow: 0 10px 25px -8px rgba(0, 0, 0, 0.5);
  border: none;
  cursor: pointer;
  font-size: 1rem;
}
.btn-submit:hover { background-color: #fff; transform: translateY(-2px); }
.btn-submit:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

/* ==========================================================================
   Карточки услуг
   ========================================================================== */
.service-card {
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), background-color 0.3s var(--ease);
}
.service-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-border-hover);
  background-color: var(--color-surface-hover);
}

.service-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  border: 1px solid var(--color-accent-dim);
  background: var(--color-accent-soft);
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
  display: inline-block;
}

/* ==========================================================================
   Соцссылки
   ========================================================================== */
.social-link { color: var(--color-text-secondary); transition: color 0.25s var(--ease); }
.social-link:hover { color: var(--color-accent); }

/* ==========================================================================
   Формы
   ========================================================================== */
.input-field {
  width: 100%;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  color: var(--color-text);
  transition: border-color 0.25s var(--ease);
  font-size: 1rem;
}
.input-field:focus { outline: none; border-color: var(--color-accent); }
.input-field::placeholder { color: var(--color-text-muted); }

.label-field {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 0.4rem;
}

/* ==========================================================================
   Конструктор заявки (корзина услуг)
   ========================================================================== */
.cart-item { cursor: pointer; user-select: none; transition: transform 0.2s var(--ease), border-color 0.2s var(--ease); }
.cart-item:hover { transform: translateY(-2px); border-color: rgba(0, 255, 136, 0.35); }
.cart-item.selected {
  border-color: var(--color-accent) !important;
  background-color: var(--color-accent-soft);
}

.radio-indicator, .checkbox-indicator, .radio-dot, .check-icon { transition: all 0.2s var(--ease); }
.cart-item.selected .radio-indicator { border-color: var(--color-accent) !important; }
.cart-item.selected .radio-dot { opacity: 1 !important; }
.cart-item.selected .checkbox-indicator {
  background-color: var(--color-accent) !important;
  border-color: var(--color-accent) !important;
}
.cart-item.selected .check-icon { opacity: 1 !important; }

.cart-list-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background: var(--color-accent-soft);
  border: 1px solid var(--color-accent-dim);
  border-radius: 8px;
  font-size: 13px;
  animation: slideIn 0.2s var(--ease);
}
.cart-list-item-name { color: var(--color-text); flex: 1; }
.cart-list-item-price { color: var(--color-accent); font-weight: 600; margin-left: 8px; }

@keyframes slideIn {
  from { opacity: 0; transform: translateX(-8px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ==========================================================================
   Hero — фоновая сетка + сигнатурная анимация "интеграционного потока"
   ========================================================================== */
.hero-grid {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, black 40%, transparent 90%);
          mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, black 40%, transparent 90%);
}

.flow-path {
  stroke-dasharray: 6 8;
  animation: flow 2.4s linear infinite;
}
@keyframes flow { to { stroke-dashoffset: -56; } }

.flow-pulse { animation: pulse-dot 2.8s var(--ease) infinite; }
.flow-pulse.delay-1 { animation-delay: 0.6s; }
.flow-pulse.delay-2 { animation-delay: 1.2s; }
.flow-pulse.delay-3 { animation-delay: 1.8s; }
@keyframes pulse-dot {
  0%   { opacity: 0; offset-distance: 0%; }
  10%  { opacity: 1; }
  85%  { opacity: 1; }
  100% { opacity: 0; offset-distance: 100%; }
}

.hero-node {
  transition: filter 0.3s var(--ease);
}

/* ==========================================================================
   Скролл-появление секций
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}