/* ==========================================================================
   ООО «Электропорт» — Официальный веб-сайт (Беларусь)
   Светлая дизайн-система (White / Light Theme)
   ========================================================================== */

:root {
  /* Фирменная палитра бренда (из Logo_main) */
  --color-brand-petrol: #1e5a6b;
  --color-brand-petrol-dark: #133c48;
  --color-brand-petrol-light: #287a91;
  --color-brand-petrol-subtle: #f0f7f9;

  /* Яркий технологичный акцент (Hyper Cyan / Electric Teal) */
  --color-accent-cyan: #00a8b5;
  --color-accent-cyan-dark: #008792;
  --color-accent-cyan-light: #00c4d4;
  --color-accent-cyan-glow: rgba(0, 168, 181, 0.28);
  --color-accent-cyan-subtle: #e6f9fa;

  /* Дополнительные акценты */
  --color-accent-volt: #059669;
  --color-accent-volt-subtle: #ecfdf5;
  --color-accent-amber: #d97706;
  --color-accent-amber-subtle: #fffbeb;

  /* Светлая тема: Фоны и поверхности */
  --color-bg-body: #f8fafc;
  --color-bg-white: #ffffff;
  --color-bg-alt: #f1f5f9;
  --color-bg-elevated: #ffffff;
  
  /* Границы и разделители */
  --color-border-light: #e2e8f0;
  --color-border-card: #e2e8f0;
  --color-border-cyan: #b2ebf2;

  /* Текст (высокий контраст для легкого чтения) */
  --color-text-title: #0f172a;
  --color-text-body: #334155;
  --color-text-secondary: #64748b;
  --color-text-muted: #94a3b8;
  --color-text-white: #ffffff;

  /* Типографика */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Радиусы и тени */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-pill: 999px;

  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 16px -2px rgba(15, 23, 42, 0.08), 0 2px 6px -1px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 12px 32px -4px rgba(15, 23, 42, 0.1), 0 4px 12px -2px rgba(15, 23, 42, 0.05);
  --shadow-card-hover: 0 16px 40px -6px rgba(0, 168, 181, 0.14), 0 6px 16px -2px rgba(15, 23, 42, 0.06);

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

/* Базовые настройки */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

ul, ol {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button, input, select, textarea {
  font: inherit;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   Верхняя служебная панель (Top Bar) — Светлая
   ========================================================================== */
.top-bar {
  background-color: #f1f5f9;
  border-bottom: 1px solid var(--color-border-light);
  font-size: 0.8125rem;
  padding: 9px 0;
  color: var(--color-text-secondary);
}

.top-bar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.top-bar__status {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text-title);
  font-weight: 600;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--color-accent-volt);
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(5, 150, 105, 0.6);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.top-bar__contacts {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.top-bar__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-text-body);
  white-space: nowrap;
}

.top-bar__link:hover {
  color: var(--color-accent-cyan-dark);
}

.top-bar__phone {
  font-weight: 800;
  color: var(--color-brand-petrol);
  font-size: 0.875rem;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.top-bar__link--tg {
  color: #0284c7;
  background: #e0f2fe;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-weight: 600;
}

.top-bar__link--tg:hover {
  background: #bae6fd;
}

/* ==========================================================================
   Шапка (Header) — Белая с размытием
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.site-logo__img {
  height: 46px;
  width: auto;
  max-width: 160px;
  object-fit: contain;
  display: block;
}

.header-call-mobile {
  display: none;
}

.site-nav__mobile-box {
  display: none;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-nav__link {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text-body);
  position: relative;
  padding: 8px 0;
}

.site-nav__link:hover,
.site-nav__link.active {
  color: var(--color-brand-petrol);
}

.site-nav__link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent-cyan);
  transition: var(--transition-fast);
}

.site-nav__link:hover::after {
  width: 100%;
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-phone-quick {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.header-phone-quick__num {
  font-size: 1rem;
  font-weight: 800;
  color: var(--color-text-title);
  letter-spacing: -0.01em;
  white-space: nowrap;
  flex-shrink: 0;
}

.header-phone-quick__label {
  font-size: 0.6875rem;
  color: var(--color-accent-volt);
  font-weight: 700;
  text-transform: uppercase;
}

/* ==========================================================================
   Кнопки (Buttons)
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 700;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition-normal);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-brand-petrol), var(--color-accent-cyan));
  color: var(--color-text-white);
  box-shadow: 0 4px 14px rgba(0, 168, 181, 0.28);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-brand-petrol-dark), var(--color-accent-cyan-dark));
  box-shadow: 0 6px 20px rgba(0, 168, 181, 0.42);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: var(--color-bg-white);
  color: var(--color-text-title);
  border-color: var(--color-border-card);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  border-color: var(--color-accent-cyan);
  color: var(--color-brand-petrol);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline-petrol {
  background: transparent;
  color: var(--color-brand-petrol);
  border-color: var(--color-brand-petrol);
}

.btn-outline-petrol:hover {
  background: var(--color-brand-petrol-subtle);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 9px 18px;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 15px 30px;
  font-size: 1.0625rem;
}

.burger-btn {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-title);
  font-size: 1.75rem;
  cursor: pointer;
  padding: 4px;
}

/* ==========================================================================
   Главный экран (Hero Section) — Светлый, современный
   ========================================================================== */
.hero {
  position: relative;
  padding: 60px 0 80px;
  background: linear-gradient(180deg, #ffffff 0%, #f0f7f9 100%);
  border-bottom: 1px solid var(--color-border-light);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(rgba(30, 90, 107, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 90, 107, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-brand-petrol-subtle);
  border: 1px solid var(--color-border-cyan);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  color: var(--color-brand-petrol);
  font-size: 0.875rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.hero__title {
  font-size: 2.875rem;
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.025em;
  margin-bottom: 20px;
  color: var(--color-text-title);
}

.hero__title .text-accent {
  color: var(--color-accent-cyan-dark);
  position: relative;
}

.hero__subtitle {
  font-size: 1.125rem;
  color: var(--color-text-body);
  line-height: 1.65;
  margin-bottom: 32px;
  max-width: 620px;
}

.hero__cta-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.hero__features-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.hero__feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9375rem;
  color: var(--color-text-body);
  font-weight: 600;
}

.hero__feature-icon {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-accent-volt-subtle);
  color: var(--color-accent-volt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 900;
  flex-shrink: 0;
  border: 1px solid rgba(5, 150, 105, 0.25);
}

/* Изображение на главном экране (Hero Showcase Visual) */
.hero-visual-card {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border-card);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.hero-visual__img-wrap {
  position: relative;
  height: 280px;
  overflow: hidden;
}

.hero-visual__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.hero-visual-card:hover .hero-visual__img {
  transform: scale(1.04);
}

.hero-visual__overlay-badge {
  position: absolute;
  bottom: 16px;
  left: 16px;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(8px);
  color: #ffffff;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-visual__body {
  padding: 24px;
  background: var(--color-bg-white);
}

.hero-stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 18px;
}

.hero-stat-box {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 14px 16px;
}

.hero-stat-box__val {
  font-size: 1.625rem;
  font-weight: 900;
  color: var(--color-brand-petrol);
  line-height: 1.1;
}

.hero-stat-box__lbl {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-top: 4px;
  font-weight: 600;
}

.hero-card__note {
  background: var(--color-brand-petrol-subtle);
  border: 1px solid var(--color-border-cyan);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-size: 0.875rem;
  color: var(--color-brand-petrol-dark);
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
}

/* ==========================================================================
   Логотипы реальных компаний и энергосистем (Logos Grid)
   ========================================================================== */
.trust-strip {
  background-color: var(--color-bg-white);
  border-bottom: 1px solid var(--color-border-light);
  padding: 48px 0;
}

.trust-strip__header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 32px;
}

.trust-strip__title {
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--color-text-title);
  margin-bottom: 8px;
}

.trust-strip__subtitle {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

.logos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  align-items: center;
}

.logo-card {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 80px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
}

.logo-card:hover {
  border-color: var(--color-accent-cyan);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.logo-card__img {
  max-height: 48px;
  max-width: 100%;
  width: auto;
  object-fit: contain;
}

/* ==========================================================================
   Секции и типографика
   ========================================================================== */
.section {
  padding: 84px 0;
  position: relative;
}

.section--alt {
  background-color: #f1f5f9;
}

.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 50px;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-brand-petrol);
  background: var(--color-brand-petrol-subtle);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
  border: 1px solid var(--color-border-cyan);
}

.section-title {
  font-size: 2.375rem;
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--color-text-title);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.0625rem;
  color: var(--color-text-body);
  line-height: 1.6;
}

/* ==========================================================================
   Услуги (Services Grid) — Светлые карточки
   ========================================================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border-card);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
  position: relative;
}

.service-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-accent-cyan);
  box-shadow: var(--shadow-card-hover);
}

.service-card__icon-wrap {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-md);
  background: var(--color-brand-petrol-subtle);
  border: 1px solid var(--color-border-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 22px;
}

.service-card__title {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--color-text-title);
}

.service-card__desc {
  font-size: 0.9375rem;
  color: var(--color-text-body);
  line-height: 1.55;
  margin-bottom: 20px;
}

.service-card__list {
  margin-top: auto;
  border-top: 1px solid var(--color-border-light);
  padding-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.service-card__item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--color-text-body);
  font-weight: 500;
}

.service-card__check {
  color: var(--color-accent-cyan-dark);
  font-weight: 900;
}

/* ==========================================================================
   Кейсы и выполненные объекты (Portfolio Grid с фото)
   ========================================================================== */
.portfolio-filter {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.filter-btn {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border-card);
  color: var(--color-text-body);
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  font-size: 0.875rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--color-brand-petrol);
  color: var(--color-text-white);
  border-color: var(--color-brand-petrol);
  box-shadow: 0 4px 14px rgba(30, 90, 107, 0.3);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.project-card {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border-card);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  border-color: var(--color-accent-cyan);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.project-card__img-wrap {
  height: 220px;
  position: relative;
  overflow: hidden;
  background: #e2e8f0;
}

.project-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.project-card:hover .project-card__img {
  transform: scale(1.05);
}

.project-card__badge-overlay {
  position: absolute;
  top: 14px;
  right: 14px;
  background: var(--color-accent-volt);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.project-card__top {
  padding: 24px 28px 14px;
}

.project-card__loc {
  font-size: 0.8125rem;
  color: var(--color-accent-cyan-dark);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.project-card__title {
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--color-text-title);
}

.project-card__body {
  padding: 0 28px 24px;
  flex-grow: 1;
}

.project-specs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  background: var(--color-bg-alt);
  padding: 14px 16px;
  border-radius: var(--radius-md);
  margin-bottom: 18px;
  border: 1px solid var(--color-border-light);
}

.spec-item__val {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--color-brand-petrol);
}

.spec-item__lbl {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  margin-top: 2px;
  font-weight: 600;
}

.project-work-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--color-text-body);
}

.project-work-list li {
  position: relative;
  padding-left: 18px;
}

.project-work-list li::before {
  content: "•";
  color: var(--color-accent-cyan);
  font-size: 1.25rem;
  position: absolute;
  left: 0;
  top: -2px;
}

.project-card__footer {
  padding: 14px 28px;
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  font-weight: 600;
}

/* ==========================================================================
   Интерактивный сметный калькулятор (Светлый)
   ========================================================================== */
.calc-wrapper {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border-card);
  border-radius: var(--radius-xl);
  padding: 44px;
  box-shadow: var(--shadow-lg);
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: 48px;
}

.calc-step {
  margin-bottom: 26px;
}

.calc-step__label {
  display: block;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text-title);
  margin-bottom: 12px;
}

.calc-options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 12px;
}

.calc-option {
  position: relative;
}

.calc-option input[type="radio"],
.calc-option input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.calc-option label {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 14px 10px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-body);
  transition: var(--transition-fast);
}

.calc-option label:hover {
  border-color: var(--color-brand-petrol);
  color: var(--color-brand-petrol);
}

.calc-option input:checked + label {
  background: var(--color-brand-petrol-subtle);
  border-color: var(--color-accent-cyan);
  color: var(--color-brand-petrol-dark);
  box-shadow: 0 0 0 1px var(--color-accent-cyan);
}

/* Сводка калькулятора */
.calc-summary {
  background: linear-gradient(145deg, #f8fafc, #edf2f7);
  border: 1px solid var(--color-border-card);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.calc-summary__title {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--color-text-title);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border-light);
}

.calc-breakdown {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.calc-breakdown__item {
  display: flex;
  justify-content: space-between;
  font-size: 0.9375rem;
  color: var(--color-text-body);
}

.calc-breakdown__item--total {
  border-top: 2px solid var(--color-border-cyan);
  padding-top: 14px;
  margin-top: 6px;
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--color-text-title);
}

.calc-breakdown__item--total span:last-child {
  color: var(--color-brand-petrol);
  font-size: 1.625rem;
  font-weight: 900;
}

.calc-note {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin-bottom: 24px;
}

/* ==========================================================================
   Аттестаты и Реестры (Certifications)
   ========================================================================== */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.cert-card {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border-card);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.cert-card:hover {
  border-color: var(--color-accent-cyan);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.cert-card__badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--color-accent-volt);
  background: var(--color-accent-volt-subtle);
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 18px;
  align-self: flex-start;
  border: 1px solid rgba(5, 150, 105, 0.2);
}

.cert-card__number {
  font-family: var(--font-mono);
  font-size: 1.1875rem;
  font-weight: 800;
  color: var(--color-text-title);
  margin-bottom: 8px;
}

.cert-card__issuer {
  font-size: 0.875rem;
  color: var(--color-brand-petrol);
  margin-bottom: 14px;
  font-weight: 700;
}

.cert-card__desc {
  font-size: 0.875rem;
  color: var(--color-text-body);
  line-height: 1.55;
  margin-bottom: 20px;
  flex-grow: 1;
}

.cert-card__meta {
  border-top: 1px solid var(--color-border-light);
  padding-top: 14px;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
}

.cert-card__link {
  color: var(--color-accent-cyan-dark);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.cert-card__link:hover {
  text-decoration: underline;
}

/* ==========================================================================
   Этапы работы (Workflow Process)
   ========================================================================== */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.process-step {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border-card);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
}

.process-step:hover {
  border-color: var(--color-accent-cyan);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.process-step__num {
  font-family: var(--font-mono);
  font-size: 2.25rem;
  font-weight: 900;
  color: var(--color-brand-petrol);
  opacity: 0.25;
  margin-bottom: 10px;
  line-height: 1;
}

.process-step__title {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--color-text-title);
  margin-bottom: 10px;
}

.process-step__desc {
  font-size: 0.875rem;
  color: var(--color-text-body);
  line-height: 1.55;
}

/* ==========================================================================
   Вопрос-Ответ (FAQ Accordion)
   ========================================================================== */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: var(--transition-fast);
}

.faq-item.active {
  border-color: var(--color-accent-cyan);
  box-shadow: var(--shadow-md);
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 22px 26px;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-text-title);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  cursor: pointer;
}

.faq-icon {
  font-size: 1.125rem;
  color: var(--color-brand-petrol);
  transition: transform var(--transition-fast);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease-out;
  padding: 0 26px;
  color: var(--color-text-body);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.faq-item.active .faq-answer {
  padding-bottom: 22px;
}

/* ==========================================================================
   Форма заявки и Контакты (Contact Box) — Светлый блок
   ========================================================================== */
.contact-section {
  padding: 90px 0;
  background: linear-gradient(180deg, #f1f5f9 0%, #ffffff 100%);
  border-top: 1px solid var(--color-border-light);
}

.contact-box {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 56px;
  background: var(--color-bg-white);
  border: 1px solid var(--color-border-card);
  border-radius: var(--radius-xl);
  padding: 56px;
  box-shadow: var(--shadow-lg);
}

.contact-info__badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--color-brand-petrol);
  background: var(--color-brand-petrol-subtle);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.contact-info__title {
  font-size: 2.125rem;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 16px;
  color: var(--color-text-title);
}

.contact-info__desc {
  font-size: 1rem;
  color: var(--color-text-body);
  line-height: 1.6;
  margin-bottom: 32px;
}

.contact-channels {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 36px;
}

.contact-channel-item {
  display: flex;
  align-items: center;
  gap: 16px;
}

.contact-channel-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  background: var(--color-brand-petrol-subtle);
  border: 1px solid var(--color-border-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-brand-petrol);
  font-size: 1.375rem;
  flex-shrink: 0;
}

.contact-channel-val {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-text-title);
}

.contact-channel-val:hover {
  color: var(--color-brand-petrol);
}

.contact-channel-lbl {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  font-weight: 600;
}

.company-requisites {
  padding-top: 24px;
  border-top: 1px solid var(--color-border-light);
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* Форма сметы */
.lead-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-text-title);
}

.form-input, .form-textarea {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-card);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  color: var(--color-text-title);
  transition: var(--transition-fast);
}

.form-input:focus, .form-textarea:focus {
  outline: none;
  background: var(--color-bg-white);
  border-color: var(--color-brand-petrol);
  box-shadow: 0 0 0 3px rgba(30, 90, 107, 0.12);
}

.form-file-drop {
  border: 2px dashed var(--color-border-card);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition-fast);
  background: var(--color-bg-alt);
}

.form-file-drop:hover {
  border-color: var(--color-brand-petrol);
  background: var(--color-brand-petrol-subtle);
}

.form-file-drop__icon {
  font-size: 1.75rem;
  color: var(--color-brand-petrol);
  margin-bottom: 6px;
}

.form-file-drop__text {
  font-size: 0.875rem;
  color: var(--color-text-body);
  font-weight: 600;
}

/* ==========================================================================
   Подвал сайта (Footer)
   ========================================================================== */
.site-footer {
  background-color: #0f172a;
  color: #94a3b8;
  padding: 60px 0 30px;
  font-size: 0.875rem;
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 48px;
}

.site-footer__brand-p {
  margin: 16px 0 20px;
  line-height: 1.6;
  max-width: 320px;
  color: #cbd5e1;
}

.footer-col__title {
  font-size: 0.9375rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 18px;
}

.footer-col__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col__link:hover {
  color: #ffffff;
}

.site-footer__bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.8125rem;
}

/* ==========================================================================
   Модальные окна (Modal Dialogs)
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-window {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border-card);
  border-radius: var(--radius-xl);
  max-width: 520px;
  width: 100%;
  padding: 40px;
  position: relative;
  box-shadow: var(--shadow-lg);
  transform: translateY(20px);
  transition: var(--transition-normal);
}

.modal-overlay.active .modal-window {
  transform: translateY(0);
}

.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  background: none;
  border: none;
  color: var(--color-text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.modal-close-btn:hover {
  color: var(--color-text-title);
}

.modal-title {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--color-text-title);
}

.modal-desc {
  font-size: 0.9375rem;
  color: var(--color-text-body);
  margin-bottom: 24px;
}

.toast-msg {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: #ffffff;
  border: 1px solid var(--color-accent-volt);
  color: var(--color-text-title);
  padding: 16px 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 2000;
  display: flex;
  align-items: center;
  gap: 12px;
  transform: translateY(100px);
  opacity: 0;
  transition: var(--transition-normal);
  font-weight: 600;
}

.toast-msg.show {
  transform: translateY(0);
  opacity: 1;
}

/* ==========================================================================
   Адаптивность (Media Queries)
   ========================================================================== */
@media (max-width: 1080px) {
  .hero__inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .calc-wrapper {
    grid-template-columns: 1fr;
    padding: 32px;
  }
  .certs-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .contact-box {
    grid-template-columns: 1fr;
    padding: 36px;
  }
}

@media (max-width: 860px) {
  .portfolio-grid {
    grid-template-columns: 1fr;
  }
  .site-footer__inner {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .hero__title {
    font-size: 2.125rem;
  }
  .hero__features-list {
    grid-template-columns: 1fr;
  }
  .services-grid {
    grid-template-columns: 1fr;
  }
  .certs-grid {
    grid-template-columns: 1fr;
  }
  .process-grid {
    grid-template-columns: 1fr;
  }
  .site-footer__inner {
    grid-template-columns: 1fr;
  }
  .container {
    padding: 0 16px;
  }
  .top-bar {
    display: none !important;
  }
}

/* ==========================================================================
   UX/UI-аудит 13.10.2026 — точечные исправления вёрстки
   ========================================================================== */
/* Нет горизонтального скролла (пустой полосы справа) ни на одном экране */
html, body { max-width: 100%; overflow-x: clip; }
.hero__inner > *, .calc-wrapper > *, .contact-box > * { min-width: 0; }
.calc-options-grid { grid-template-columns: repeat(auto-fit, minmax(min(130px, 100%), 1fr)); }

/* Шапка: воздух между логотипом, меню и телефоном; пункты меню в одну строку */
.site-header__inner { gap: 32px; }
.site-logo { flex-shrink: 0; }
@media (min-width: 1121px) {
  .site-nav { flex: 1 1 auto; display: flex; justify-content: center; min-width: 0; }
}
.site-nav__link { white-space: nowrap; }
.site-header__actions { flex-shrink: 0; }

@media (max-width: 1320px) {
  .site-header__inner { gap: 24px; }
  .site-nav__list { gap: 20px; }
  .site-nav__link { font-size: 0.875rem; }
}
@media (max-width: 1180px) {
  .header-phone-quick { display: none; }
}
@media (max-width: 860px) {
  .site-header__inner {
    height: 60px !important;
    gap: 12px !important;
    padding: 0 16px !important;
  }
  .site-logo {
    max-width: 145px !important;
    flex-shrink: 0 !important;
  }
  .site-logo__img {
    height: 36px !important;
    width: auto !important;
    max-width: 100% !important;
    object-fit: contain !important;
    display: block !important;
  }
  .header-cta-desktop {
    display: none !important;
  }
  .header-phone-quick {
    display: none !important;
  }
  .site-header__actions {
    display: flex !important;
    align-items: center !important;
    gap: 8px !important;
    flex-shrink: 0 !important;
  }
  .header-call-mobile {
    display: inline-flex !important;
    align-items: center;
    gap: 6px;
    background: #e0f2fe;
    color: var(--color-brand-petrol);
    padding: 6px 12px;
    border-radius: var(--radius-pill);
    font-weight: 700;
    font-size: 0.8125rem;
    text-decoration: none;
    white-space: nowrap;
    border: 1px solid rgba(2, 132, 199, 0.25);
    transition: all 0.2s ease;
  }
  .header-call-mobile:hover, .header-call-mobile:active {
    background: #bae6fd;
  }
  .burger-btn {
    display: flex !important;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 8px;
    border: 1px solid var(--color-border-light);
    background: #ffffff;
    color: var(--color-brand-petrol);
    font-size: 1.35rem;
    line-height: 1;
    cursor: pointer;
    flex-shrink: 0 !important;
    padding: 0;
    transition: all 0.2s ease;
  }
  .burger-btn:hover, .burger-btn:active {
    background: #f1f5f9;
    color: var(--color-accent-cyan-dark);
    border-color: var(--color-accent-cyan);
  }
}

@media (max-width: 520px) {
  .header-call-mobile {
    width: 38px !important;
    height: 38px !important;
    padding: 0 !important;
    justify-content: center !important;
    border-radius: 50% !important;
    font-size: 1rem !important;
  }
  .header-call-mobile__text {
    display: none !important;
  }
}

@media (max-width: 380px) {
  .site-header__inner {
    height: 56px !important;
  }
  .site-logo {
    max-width: 120px !important;
  }
  .site-logo__img {
    height: 32px !important;
  }
  .burger-btn {
    width: 38px !important;
    height: 38px !important;
    font-size: 1.25rem !important;
  }
  .header-call-mobile {
    width: 36px !important;
    height: 36px !important;
  }
}

/* Мобильное меню (полноэкранный аккуратный drawer) */
@media (max-width: 1120px) {
  html.nav-open {
    overflow: hidden !important;
  }
  html.nav-open .site-header {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    background-color: #ffffff !important;
  }
  .site-nav {
    display: none;
  }
  .site-nav.mobile-active {
    display: flex !important;
    flex-direction: column !important;
    position: fixed !important;
    top: var(--header-bottom, 60px) !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    height: calc(100vh - var(--header-bottom, 60px)) !important;
    height: calc(100dvh - var(--header-bottom, 60px)) !important;
    overflow-y: auto !important;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    background: #ffffff !important;
    padding: 16px 20px 48px !important;
    box-shadow: 0 16px 32px rgba(15, 23, 42, 0.12) !important;
    z-index: 99 !important;
  }
  .site-nav.mobile-active .site-nav__list {
    display: flex !important;
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 0 !important;
    width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
    list-style: none !important;
  }
  .site-nav.mobile-active .site-nav__list li {
    width: 100%;
    border-bottom: 1px solid #f1f5f9;
  }
  .site-nav.mobile-active .site-nav__link {
    display: block !important;
    padding: 14px 4px !important;
    font-size: 1.0625rem !important;
    font-weight: 600 !important;
    color: var(--color-text-title) !important;
    text-decoration: none !important;
    transition: color 0.15s ease;
  }
  .site-nav.mobile-active .site-nav__link:hover,
  .site-nav.mobile-active .site-nav__link:active {
    color: var(--color-accent-cyan-dark) !important;
  }
  .site-nav.mobile-active .site-nav__mobile-box {
    display: block !important;
    margin-top: 20px;
    width: 100%;
  }
  .site-nav__mobile-cta {
    width: 100% !important;
    display: block !important;
    text-align: center !important;
    padding: 14px 20px !important;
    font-size: 1rem !important;
    font-weight: 700 !important;
    margin-bottom: 18px !important;
    box-shadow: 0 4px 14px rgba(0, 168, 181, 0.35) !important;
  }
  .mobile-menu-contacts {
    display: flex;
    flex-direction: column;
    gap: 10px;
    background: #f8fafc;
    border: 1px solid var(--color-border-light);
    border-radius: 12px;
    padding: 16px;
  }
  .mobile-menu-phone {
    font-size: 1.125rem;
    font-weight: 800;
    color: var(--color-brand-petrol);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
  }
  .mobile-menu-label {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    font-weight: 500;
  }
  .mobile-menu-btns {
    display: flex;
    gap: 10px;
    margin-top: 4px;
  }
  .mobile-menu-tg {
    flex: 1;
    text-align: center;
    background: #0284c7;
    color: #ffffff;
    padding: 10px 12px;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
  }
  .mobile-menu-mail {
    flex: 1;
    text-align: center;
    background: #ffffff;
    color: var(--color-text-body);
    border: 1px solid var(--color-border-light);
    padding: 10px 12px;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
  }
  .mobile-menu-meta {
    font-size: 0.6875rem;
    color: var(--color-text-muted);
    text-align: center;
    margin-top: 6px;
  }
}

@media (max-width: 640px) {
  .calc-wrapper { padding: 24px 18px; gap: 28px; }
  .contact-box { padding: 24px 18px; }
  .btn { white-space: normal; text-align: center; line-height: 1.3; }
  .spec-item__val { font-size: 1rem; }
  .modal-window { padding: 32px 20px 24px; }
}

/* Карточки объектов и калькулятор */
.project-specs-grid > * { min-width: 0; }
.spec-item__val { overflow-wrap: break-word; }
.calc-breakdown__item { gap: 12px; }
.calc-breakdown__item span:last-child { white-space: nowrap; text-align: right; }
.spec-item__lbl { overflow-wrap: break-word; hyphens: auto; }
.calc-breakdown__item--total { flex-wrap: wrap; }

@media (max-width: 420px) {
  .section-title, .contact-info__title { font-size: 1.625rem; hyphens: auto; overflow-wrap: break-word; }
  .project-specs-grid { gap: 8px; }
  .calc-summary { padding-left: 18px; padding-right: 18px; }
  .contact-info { min-width: 0; }
}

/* Шапка на широких экранах */
@media (min-width: 1121px) {
  .site-header__inner { gap: 24px; }
  .site-nav__list { gap: 14px; }
  .site-nav__link { font-size: 0.875rem; }
}
@media (min-width: 1121px) and (max-width: 1320px) {
  .header-phone-quick { display: none; }
  .site-nav__list { gap: 16px; }
}

/* Модальное окно */
.modal-overlay { padding: 16px; }
.modal-window { max-height: calc(100vh - 32px); max-height: calc(100dvh - 32px); overflow-y: auto; overscroll-behavior: contain; }
.modal-close-btn { width: 44px; height: 44px; top: 10px; right: 10px; display: flex; align-items: center; justify-content: center; }

/* Узкие экраны */
@media (max-width: 360px) {
  .hero__title { font-size: 1.625rem; }
  .hero-stat-box { padding: 12px; min-width: 0; }
  .hero-stat-box__val { font-size: 1.375rem; }
  .contact-channel-val { font-size: 1.0625rem; overflow-wrap: anywhere; }
  .spec-item__val { font-size: 0.9375rem; }
  .spec-item__lbl { font-size: 0.6875rem; }
  .project-specs-grid { padding: 12px; }
}
@media (max-width: 340px) {
  .hero-stat-box { padding: 10px; }
  .hero-stat-box__lbl { font-size: 0.6875rem; hyphens: auto; overflow-wrap: break-word; }
  .project-specs-grid { padding: 10px; gap: 6px; }
  .spec-item__lbl { font-size: 0.625rem; }
}