/* ============================================================
   СТРОЙБРИГАДА — Главные стили
   Сдержанный строительный стиль: минимализм + индустриальные элементы
   Цвета: серый, белый, чёрный, акцент — оранжевый (#E8720C)
   ============================================================ */

/* ---------- Локальные шрифты (без внешних CDN) ---------- */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/Inter-Regular.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../fonts/Inter-Medium.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/Inter-SemiBold.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/Inter-Bold.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url('../fonts/Inter-ExtraBold.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 900;
  font-display: swap;
  src: url('../fonts/Inter-Black.woff2') format('woff2');
}

/* ---------- CSS-переменные (дизайн-система) ---------- */
:root {
  /* Цвета */
  --color-accent:       #E8720C;   /* Оранжевый — строительный акцент */
  --color-accent-dark:  #C25E08;   /* Оранжевый потемнее — hover */
  --color-black:        #1A1A1A;
  --color-gray-900:     #2B2B2B;
  --color-gray-800:     #3A3A3A;
  --color-gray-700:     #555555;
  --color-gray-600:     #777777;
  --color-gray-400:     #AAAAAA;
  --color-gray-300:     #CCCCCC;
  --color-gray-200:     #E0E0E0;
  --color-gray-100:     #F0F0F0;
  --color-white:        #FFFFFF;

  /* Фоны-текстуры (имитация бетона/кирпича через CSS) */
  --bg-concrete: linear-gradient(135deg, #c4c0b8 0%, #b8b4ac 25%, #ccc8c0 50%, #b8b4ac 75%, #c4c0b8 100%);
  --bg-dark-concrete: linear-gradient(135deg, #5a5856 0%, #4a4846 50%, #5a5856 100%);

  /* Типографика */
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Размеры */
  --container-width: 1200px;
  --section-padding:  100px;
  --gap:              24px;

  /* Переходы */
  --transition: 0.3s ease;

  /* Тени */
  --shadow-sm:  0 2px 8px rgba(0,0,0,0.08);
  --shadow-md:  0 4px 20px rgba(0,0,0,0.12);
  --shadow-lg:  0 8px 40px rgba(0,0,0,0.16);
}

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

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

body {
  font-family: var(--font-main);
  color: var(--color-black);
  background: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

ul, ol { list-style: none; }

/* ---------- Утилиты ---------- */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section-title {
  font-size: 2.25rem;      /* 36px */
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  text-align: center;
  margin-bottom: 12px;
  color: var(--color-black);
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: var(--color-accent);
  margin: 16px auto 0;
}

.section-subtitle {
  text-align: center;
  color: var(--color-gray-600);
  font-size: 1.125rem;     /* 18px */
  margin-bottom: 48px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ---------- Кнопки ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-main);
  font-weight: 600;
  font-size: 0.9375rem;    /* 15px */
  padding: 14px 32px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.btn--accent {
  background: var(--color-accent);
  color: var(--color-white);
}

.btn--accent:hover {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--lg {
  font-size: 1.0625rem;    /* 17px */
  padding: 18px 44px;
}

.btn--sm {
  padding: 10px 20px;
  font-size: 0.8125rem;    /* 13px */
}

.btn--full {
  width: 100%;
}

/* ============================================================
   HEADER
   ============================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(26, 26, 26, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: background var(--transition);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-white);
  font-weight: 800;
  font-size: 1.125rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.header__logo-icon {
  color: var(--color-accent);
  font-size: 1.25rem;
}

.header__phone {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-white);
  font-weight: 600;
  font-size: 1.0625rem;
  letter-spacing: 0.02em;
  transition: color var(--transition);
}

.header__phone:hover {
  color: var(--color-accent);
}

.header__phone-icon {
  flex-shrink: 0;
}

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

.header__nav a {
  color: var(--color-gray-400);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: color var(--transition);
  position: relative;
}

.header__nav a:hover {
  color: var(--color-white);
}

.header__nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition);
}

.header__nav a:hover::after {
  width: 100%;
}

/* Бургер */
.header__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.header__burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  transition: all var(--transition);
}

.header__burger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.header__burger.active span:nth-child(2) {
  opacity: 0;
}

.header__burger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--color-gray-900);
  overflow: hidden;
}

/* Кирпичная текстура через CSS */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  /* Имитация кирпичной стены через repeating-linear-gradient */
  background:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 28px,
      rgba(0,0,0,0.15) 28px,
      rgba(0,0,0,0.15) 30px
    ),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 60px,
      rgba(0,0,0,0.12) 60px,
      rgba(0,0,0,0.12) 62px
    ),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 120px,
      rgba(0,0,0,0.15) 120px,
      rgba(0,0,0,0.15) 122px
    ),
    linear-gradient(135deg, #8B4513 0%, #A0522D 20%, #8B4513 40%, #A0522D 60%, #8B4513 80%, #A0522D 100%);
  background-size:
    122px 30px,
    122px 30px,
    122px 30px,
    100% 100%;
  opacity: 0.35;
}

/* Тёмный оверлей */
.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(26,26,26,0.7) 0%,
    rgba(26,26,26,0.5) 50%,
    rgba(26,26,26,0.85) 100%
  );
}

.hero__inner {
  position: relative;
  z-index: 2;
  padding-top: 72px; /* offset for header */
  text-align: center;
}

.hero__title {
  font-size: 3.75rem;      /* 60px */
  font-weight: 900;
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  line-height: 1.15;
  margin-bottom: 20px;
  /* Анимация появления */
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUp 0.8s ease forwards 0.2s;
}

.hero__subtitle {
  font-size: 1.375rem;     /* 22px */
  color: var(--color-gray-300);
  font-weight: 400;
  margin-bottom: 36px;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.8s ease forwards 0.5s;
}

.hero .btn {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.8s ease forwards 0.8s;
}

/* Декоративная полоса снизу hero */
.hero__stripe {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: var(--color-accent);
  z-index: 3;
}

/* Анимация появления */
@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================================
   О КОМПАНИИ
   ============================================================ */
.about {
  padding: var(--section-padding) 0;
  background: var(--color-white);
  /* Лёгкая текстура бетона */
  background-image:
    radial-gradient(circle at 20% 50%, rgba(0,0,0,0.02) 0%, transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(0,0,0,0.02) 0%, transparent 50%);
}

.about__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gap);
}

.about__card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 24px;
  background: var(--color-gray-100);
  border: 1px solid var(--color-gray-200);
  border-radius: 4px;
  transition: all var(--transition);
  /* Анимация при скролле */
  opacity: 0;
  transform: translateY(30px);
}

.about__card.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.about__card-number {
  font-size: 3rem;
  font-weight: 900;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 8px;
}

.about__card-icon {
  font-size: 2.5rem;
  margin-bottom: 8px;
}

.about__card-label {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-gray-700);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ============================================================
   УСЛУГИ
   ============================================================ */
.services {
  padding: var(--section-padding) 0;
  background: var(--color-gray-100);
  /* Текстура бетона */
  background-image:
    linear-gradient(135deg, rgba(0,0,0,0.01) 25%, transparent 25%),
    linear-gradient(225deg, rgba(0,0,0,0.01) 25%, transparent 25%);
  background-size: 40px 40px;
}

.services__group-title {
  font-size: 1.25rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-gray-700);
  margin-bottom: 20px;
  padding-left: 16px;
  border-left: 4px solid var(--color-accent);
}

.services__group-title:not(:first-of-type) {
  margin-top: 48px;
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--gap);
}

.services__grid--compact {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.services__card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: 4px;
  padding: 28px 24px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  /* Анимация при скролле */
  opacity: 0;
  transform: translateY(20px);
}

.services__card.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

/* Декоративная полоска сверху */
.services__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-accent);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.services__card:hover::before {
  transform: scaleX(1);
}

.services__card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.services__card--compact {
  padding: 20px 24px;
}

.services__card-icon {
  color: var(--color-accent);
  margin-bottom: 16px;
}

.services__card-title {
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-black);
}

.services__card-desc {
  font-size: 0.875rem;
  color: var(--color-gray-600);
  line-height: 1.5;
}

/* ============================================================
   ПРЕИМУЩЕСТВА
   ============================================================ */
.advantages {
  padding: var(--section-padding) 0;
  background: var(--color-gray-900);
  color: var(--color-white);
  /* Текстура тёмного бетона */
  background-image:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 40px,
      rgba(255,255,255,0.02) 40px,
      rgba(255,255,255,0.02) 41px
    ),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 40px,
      rgba(255,255,255,0.02) 40px,
      rgba(255,255,255,0.02) 41px
    );
}

.advantages .section-title {
  color: var(--color-white);
}

.advantages .section-subtitle {
  color: var(--color-gray-400);
}

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

.advantages__item {
  display: flex;
  gap: 24px;
  padding: 32px;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 4px;
  transition: all var(--transition);
  /* Анимация при скролле */
  opacity: 0;
  transform: translateY(20px);
}

.advantages__item.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.advantages__item:hover {
  border-color: var(--color-accent);
  background: rgba(232, 114, 12, 0.05);
}

.advantages__item-number {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--color-accent);
  line-height: 1;
  flex-shrink: 0;
  opacity: 0.6;
}

.advantages__item-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.advantages__item-desc {
  font-size: 0.9375rem;
  color: var(--color-gray-400);
  line-height: 1.6;
}

/* ============================================================
   ПОРТФОЛИО
   ============================================================ */
.portfolio {
  padding: var(--section-padding) 0;
  background: var(--color-white);
}

.portfolio__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.portfolio__item {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
  cursor: pointer;
  aspect-ratio: 4 / 3;
  /* Анимация при скролле */
  opacity: 0;
  transform: scale(0.95);
}

.portfolio__item.visible {
  opacity: 1;
  transform: scale(1);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

/* Фотографии портфолио */
.portfolio__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

/* Hover-эффект */
.portfolio__item:hover .portfolio__img {
  transform: scale(1.08);
}

.portfolio__hover {
  position: absolute;
  inset: 0;
  background: rgba(26,26,26,0.75);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--color-white);
  font-weight: 600;
  font-size: 1.125rem;
  opacity: 0;
  transition: opacity var(--transition);
}

.portfolio__item:hover .portfolio__hover {
  opacity: 1;
}

.portfolio__hover-tag {
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  padding: 4px 12px;
  border-radius: 2px;
}

/* ============================================================
   КАК МЫ РАБОТАЕМ (Этапы)
   ============================================================ */
.stages {
  padding: var(--section-padding) 0;
  background: var(--color-gray-100);
}

.stages__timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
}

/* Горизонтальная линия-трек */
.stages__timeline::before {
  content: '';
  position: absolute;
  top: 32px;
  left: 12.5%;
  right: 12.5%;
  height: 3px;
  background: var(--color-gray-300);
  z-index: 0;
}

.stages__step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0 16px;
  position: relative;
  z-index: 1;
  /* Анимация при скролле */
  opacity: 0;
  transform: translateY(20px);
}

.stages__step.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.stages__step-marker {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--color-white);
  border: 3px solid var(--color-gray-300);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  transition: all var(--transition);
}

.stages__step.visible .stages__step-marker {
  border-color: var(--color-accent);
  background: var(--color-accent);
}

.stages__step-num {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-gray-400);
  transition: color var(--transition);
}

.stages__step.visible .stages__step-num {
  color: var(--color-white);
}

.stages__step-title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.stages__step-desc {
  font-size: 0.875rem;
  color: var(--color-gray-600);
  line-height: 1.5;
}

/* ============================================================
   FAQ
   ============================================================ */
.faq {
  padding: var(--section-padding) 0;
  background: var(--color-white);
}

.faq__list {
  max-width: 800px;
  margin: 0 auto;
}

.faq__item {
  border: 1px solid var(--color-gray-200);
  border-radius: 4px;
  margin-bottom: 16px;
  overflow: hidden;
  transition: all var(--transition);
}

.faq__item:hover {
  border-color: var(--color-accent);
}

.faq__question {
  font-size: 1.0625rem;
  font-weight: 700;
  padding: 20px 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--color-black);
  background: var(--color-gray-100);
  transition: background var(--transition);
  position: relative;
  padding-right: 48px;
}

.faq__question::after {
  content: '+';
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--color-accent);
  transition: transform var(--transition);
}

.faq__item.active .faq__question::after {
  content: '−';
}

.faq__question:hover {
  background: var(--color-gray-200);
}

.faq__answer {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-gray-600);
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq__item.active .faq__answer {
  max-height: 300px;
  padding: 16px 24px 20px;
}

/* ============================================================
   КОНТАКТЫ
   ============================================================ */
.contacts {
  padding: var(--section-padding) 0;
  background: var(--color-white);
}

.contacts__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contacts__info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contacts__phone {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-black);
  transition: color var(--transition);
}

.contacts__phone:hover {
  color: var(--color-accent);
}

.contacts__address {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1rem;
  color: var(--color-gray-700);
}

.contacts__hours {
  font-size: 0.9375rem;
  color: var(--color-gray-600);
}

.contacts__info .btn {
  align-self: flex-start;
  margin-top: 8px;
}

/* Форма */
.contacts__form {
  background: var(--color-gray-100);
  border: 1px solid var(--color-gray-200);
  border-radius: 4px;
  padding: 36px;
}

.contacts__form-title {
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.contacts__form-group {
  margin-bottom: 20px;
}

.contacts__form-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-gray-600);
  margin-bottom: 8px;
}

.contacts__form-input {
  width: 100%;
  padding: 14px 16px;
  font-family: var(--font-main);
  font-size: 1rem;
  border: 1px solid var(--color-gray-300);
  border-radius: 4px;
  background: var(--color-white);
  color: var(--color-black);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.contacts__form-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(232, 114, 12, 0.15);
}

.contacts__form-input::placeholder {
  color: var(--color-gray-400);
}

.contacts__form-input.error {
  border-color: #D32F2F;
}

.contacts__form-note {
  font-size: 0.75rem;
  color: var(--color-gray-400);
  margin-top: 12px;
  line-height: 1.4;
}

/* ============================================================
   SEO-ТЕКСТ
   ============================================================ */
.seo-text {
  padding: 48px 0;
  background: var(--color-gray-100);
  border-top: 1px solid var(--color-gray-200);
}

.seo-text h2 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-gray-700);
  margin-bottom: 16px;
}

.seo-text p {
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--color-gray-600);
  margin-bottom: 12px;
}

.seo-text p:last-child {
  margin-bottom: 0;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--color-gray-900);
  color: var(--color-gray-400);
  padding: 32px 0;
  border-top: 3px solid var(--color-accent);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer__logo {
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: 0.06em;
  color: var(--color-white);
}

.footer__copy {
  font-size: 0.8125rem;
  margin-top: 4px;
}

.footer__right {
  display: flex;
  gap: 24px;
}

.footer__right a {
  font-size: 0.8125rem;
  color: var(--color-gray-400);
  transition: color var(--transition);
}

.footer__right a:hover {
  color: var(--color-accent);
}

/* ============================================================
   АДАПТИВНОСТЬ
   ============================================================ */

/* Планшет */
@media (max-width: 992px) {
  :root {
    --section-padding: 80px;
  }

  .hero__title {
    font-size: 2.75rem;
  }

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

  .advantages__grid {
    grid-template-columns: 1fr;
  }

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

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

  .stages__timeline::before {
    display: none;
  }

  .contacts__grid {
    grid-template-columns: 1fr;
  }
}

/* Мобильный */
@media (max-width: 768px) {
  :root {
    --section-padding: 60px;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .section-subtitle {
    font-size: 1rem;
    margin-bottom: 32px;
  }

  /* Мобильное меню */
  .header__nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(26,26,26,0.98);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 24px;
    transform: translateX(100%);
    transition: transform 0.4s ease;
  }

  .header__nav.open {
    transform: translateX(0);
  }

  .header__nav a {
    font-size: 1.125rem;
  }

  .header__burger {
    display: flex;
  }

  .header__phone {
    font-size: 0.9375rem;
  }

  /* Hero */
  .hero__title {
    font-size: 2rem;
  }

  .hero__subtitle {
    font-size: 1.0625rem;
  }

  /* О компании */
  .about__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .about__card {
    padding: 28px 16px;
  }

  .about__card-number {
    font-size: 2.25rem;
  }

  /* Услуги */
  .services__grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .services__grid--compact {
    grid-template-columns: 1fr;
  }

  /* Преимущества */
  .advantages__item {
    padding: 24px;
    gap: 16px;
  }

  .advantages__item-number {
    font-size: 2rem;
  }

  /* Портфолио */
  .portfolio__grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  /* Этапы */
  .stages__timeline {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .stages__step {
    flex-direction: row;
    text-align: left;
    gap: 16px;
  }

  .stages__step-marker {
    margin-bottom: 0;
    flex-shrink: 0;
    width: 52px;
    height: 52px;
  }

  .stages__step-num {
    font-size: 1.25rem;
  }

  /* Контакты */
  .contacts__phone {
    font-size: 1.375rem;
  }

  .contacts__form {
    padding: 24px;
  }

  /* Footer */
  .footer__inner {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .footer__right {
    flex-wrap: wrap;
    justify-content: center;
  }
}

/* Маленький мобильный */
@media (max-width: 480px) {
  .hero__title {
    font-size: 1.625rem;
  }

  .about__grid {
    grid-template-columns: 1fr 1fr;
  }

  .services__grid {
    grid-template-columns: 1fr;
  }

  .portfolio__grid {
    grid-template-columns: 1fr;
  }
}