:root {
    /* Базовые цвета */
    --bg-dark: #1a1a1a;
    --bg-light: #f4f4f4;
    --text-light: #ffffff;
    --text-dark: #333;

    /* Новый акцентный цвет */
    --accent-color: #ddbd96;
    --accent-hover: #e8cfa7;
    --accent-glow: rgba(221, 189, 150, 0.7);
    
    /* Шрифты и размеры */
    --font-main: 'Montserrat', sans-serif;
    --font-headings: 'Raleway', serif;
    --header-height: 90px;
    --transition-speed: 0.3s ease;
    --scrollbar-width: 0px; 
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { overflow-x: hidden; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-main); background-color: var(--bg-light); color: var(--text-dark); line-height: 1.6; }
body.no-scroll { overflow: hidden; padding-right: var(--scrollbar-width); }
.container { max-width: 1200px; margin: 0 auto; padding: 0 15px; }
img { max-width: 100%; height: auto; display: block; }
h1, h2, h3 { font-family: var(--font-headings); font-weight: 700; line-height: 1.2; }
.section { padding: 100px 0; }
.section-title { text-align: center; font-size: 2.5rem; margin-bottom: 60px; position: relative; padding-bottom: 20px; }
.section-title::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 60px; height: 3px; background-color: var(--accent-color); }

.btn { display: inline-block; padding: 12px 30px; font-family: var(--font-main); font-size: 1rem; font-weight: 600; text-decoration: none; border: 2px solid transparent; border-radius: 5px; cursor: pointer; transition: all var(--transition-speed); text-transform: uppercase; letter-spacing: 1px; white-space: nowrap; }
.btn[disabled] { background-color: #ccc; cursor: not-allowed; }
.btn-primary { background-color: #f3b80c; color: var(--bg-dark); }
.btn-primary:hover:not([disabled]) { background-color: var(--accent-hover); transform: translateY(-3px); box-shadow: 0 10px 20px rgba(0,0,0,0.2); }
.btn-outline { border-color: var(--accent-color); color: var(--accent-color); background-color: transparent; }
.btn-outline:hover { background-color: var(--accent-color); color: var(--bg-dark); }

/* -- ОСНОВНЫЕ ИЗМЕНЕНИЯ ЦВЕТА -- */
.header { background: linear-gradient(135deg, #21668f 0%, #5c8ba7 100%); }
#works, #advantages, .footer { background: linear-gradient(135deg, #21668f 0%, #5c8ba7 100%); color: var(--text-light); }
.header.scrolled { background: rgba(33, 102, 143, 0.95); backdrop-filter: blur(10px); }
.hero::before { background: rgba(0, 0, 0, 0.5); }
#works .section-title, #advantages .section-title { color: var(--text-light); }
#advantages .advantage-item { border: 1px solid #5a9cb3; background-color: #4a7a99; }
#advantages .advantage-item:hover { background-color: #3a788c; }
.mobile-nav { background-color: #5c8ba7; }
.mobile-nav .nav-link:hover { background-color: #4a7a99; }
.mobile-nav__contacts { border-top: 1px solid #77a8c9; }
.footer-nav .nav-link, .footer__contacts .phone-link, .footer__contacts p { color: #ddd; }


.header { position: fixed; top: 0; left: 0; width: 100%; height: var(--header-height); z-index: 1000; box-shadow: 0 5px 15px rgba(0,0,0,0.2); transition: background-color var(--transition-speed), height var(--transition-speed); }
body.no-scroll .header { padding-right: var(--scrollbar-width); }
.header.scrolled { height: 80px; }
.header__container { height: 100%; display: flex; justify-content: space-between; align-items: center; gap: 20px; }

.logo-link { display: flex; align-items: center; height: 100%; padding: 10px 0; text-decoration: none; }
.logo { height: 100%; width: auto; object-fit: contain; transition: height var(--transition-speed); }

.main-nav { display: flex; align-items: center; margin-right: auto; padding-left: 20px; }
.main-nav .nav-link { color: var(--text-light); text-decoration: none; margin: 0 15px; font-size: 1rem; position: relative; transition: color var(--transition-speed); white-space: nowrap; }
.main-nav .nav-link::after { content: ''; position: absolute; bottom: -5px; left: 0; width: 0; height: 2px; background-color: var(--accent-color); transition: width var(--transition-speed); }
.main-nav .nav-link:hover { color: var(--accent-color); }
.main-nav .nav-link:hover::after { width: 100%; }
.header__actions { display: flex; align-items: center; gap: 20px; }
.header__phones { display: flex; flex-direction: column; align-items: flex-start; gap: 4px; }
.phone-link { display: flex; align-items: center; gap: 8px; color: var(--text-light); text-decoration: none; transition: color var(--transition-speed); font-size: 0.95rem; white-space: nowrap; }
.phone-link i { color: var(--accent-color); font-size: 0.9em; transition: color var(--transition-speed); }
.phone-link:hover, .phone-link:hover i { color: var(--accent-hover); }
.burger-menu { display: none; background: none; border: none; cursor: pointer; z-index: 1001; width: 30px; height: 30px; flex-direction: column; justify-content: space-around; }
.burger-menu span { display: block; width: 100%; height: 3px; background-color: var(--accent-color); border-radius: 3px; transition: background-color var(--transition-speed); }
.burger-menu:hover span { background-color: var(--accent-hover); }
.mobile-nav { position: fixed; top: 0; width: 90%; max-width: 320px; height: 100vh; z-index: 2000; display: flex; flex-direction: column; padding-top: 100px; transition: transform 0.4s cubic-bezier(0.77, 0, 0.175, 1); transform: translateX(-100%); }
.mobile-nav.active { transform: translateX(0); box-shadow: 5px 0 15px rgba(0,0,0,0.3); }
.mobile-nav .nav-link { color: var(--text-light); text-decoration: none; font-size: 1.5rem; padding: 15px 30px; display: block; }
.close-btn { position: absolute; top: 20px; right: 20px; background: none; border: none; color: #fff; font-size: 3rem; cursor: pointer; }
.mobile-nav__contacts { margin-top: auto; padding: 30px; }
.mobile-nav__contacts .phone-link { display: flex; color: var(--text-light); text-decoration: none; margin-bottom: 20px; font-size: 1.2rem; font-weight: 500; align-items: center; gap: 12px; }

.hero { height: 100vh; min-height: 600px; padding-top: var(--header-height); background: no-repeat center center/cover; position: relative; display: flex; color: #fff; text-align: center; }
.hero::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; }
.hero__container { position: relative; z-index: 2; display: flex; flex-direction: column; justify-content: center; align-items: center; }
.hero__title { font-size: 4rem; margin-bottom: 20px; }
.hero__subtitle { font-size: 1.5rem; max-width: 700px; margin-bottom: 40px; font-weight: 300; }

.services-grid,
.advantages-grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); 
    gap: 30px; 
}
.service-card { background: #fff; padding: 40px; text-align: center; border-radius: 10px; box-shadow: 0 10px 30px rgba(0,0,0,0.05); transition: transform var(--transition-speed), box-shadow var(--transition-speed); }
.service-card:hover { transform: translateY(-10px); box-shadow: 0 20px 40px rgba(0,0,0,0.1); }
.service-card i, .advantage-item i { font-size: 3rem; color: var(--accent-color); margin-bottom: 20px; }
.service-card h3, .advantage-item h3 { font-size: 1.5rem; margin-bottom: 15px; }
.works-swiper {
  width: 100%;
  padding-bottom: 50px;
}

.works-swiper .swiper-slide {
  border-radius: 10px;
  overflow: hidden;
  height: 500px;
}

.works-swiper .swiper-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.works-swiper .swiper-slide:hover img {
  transform: scale(1.05);
}

.works-swiper .swiper-pagination-bullet-active {
  background-color: var(--accent-color) !important;
}

.works-swiper .swiper-button-next,
.works-swiper .swiper-button-prev {
  color: var(--accent-color) !important;
}

.swiper-container { width: 100%; padding-bottom: 50px; }
.swiper-slide { position: relative; border-radius: 10px; overflow: hidden; height: 500px; }
.swiper-slide img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; background-color: #333; }
.swiper-slide:hover img { transform: scale(1.05); }
.swiper-pagination-bullet-active { background-color: var(--accent-color) !important; }
.swiper-button-next, .swiper-button-prev { color: var(--accent-color) !important; }
.slide-caption { position: absolute; bottom: 0; left: 0; width: 100%; padding: 30px; background: linear-gradient(to top, rgba(0,0,0,0.9), transparent); color: #fff; text-align: left; transform: translateY(30px); opacity: 0; transition: transform 0.6s cubic-bezier(0.165, 0.84, 0.44, 1), opacity 0.6s ease; }
.swiper-slide-active .slide-caption { transform: translateY(0); opacity: 1; }
.caption-line { width: 40px; height: 3px; background-color: var(--accent-color); margin-bottom: 15px; border-radius: 2px; }
.slide-caption h3 { font-family: var(--font-headings); font-size: 1.8rem; margin-bottom: 5px; letter-spacing: 1px; }
.slide-caption p { font-size: 1rem; font-weight: 300; opacity: 0.8; margin: 0; }

.gallery-filter { text-align: center; margin-bottom: 40px; }
.filter-btn { background: none; border: 1px solid #ccc; padding: 10px 20px; margin: 0 5px 10px; cursor: pointer; border-radius: 5px; transition: var(--transition-speed); font-size: 1rem; }
.filter-btn.active, .filter-btn:hover { background-color: var(--accent-color); color: var(--bg-dark); border-color: var(--accent-color); }
/* Универсальная сетка для вертикальных изображений */
.gallery-grid {
  display: grid;
  gap: 15px;
  grid-template-columns: repeat(4, 1fr); /* 4 колонки по умолчанию */
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: 5px;
  background-color: #ddd;
  aspect-ratio: 3 / 4; /* вертикальное соотношение сторон */
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover; /* обрезаем под контейнер без искажений */
}

/* Планшеты (2 колонки) */
@media (max-width: 992px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Телефоны (1 колонка) */
@media (max-width: 576px) {
  .gallery-grid { grid-template-columns: repeat(1, 1fr); }
}

.gallery-item:hover img { transform: scale(1.1); }
gallery-item.hide {
  opacity: 0;
  transform: scale(0.8);
  pointer-events: none;
  transition: opacity 0.3s, transform 0.3s;
  display: none; /* важно, но JS должен вернуть обратно */
}

.advantage-item { padding: 30px; text-align: center; transition: background-color var(--transition-speed); border-radius: 10px;}

.contacts-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: start; }
.contact-form-wrapper p { margin-bottom: 20px; }
.contact-form input, .contact-form textarea, .modal-form input { width: 100%; padding: 15px; margin-bottom: 20px; border: 1px solid #ccc; border-radius: 5px; font-size: 1rem; font-family: var(--font-main); background-color: #fff; }
.contact-form input:focus, .contact-form textarea:focus, .modal-form input:focus { outline: none; border-color: var(--accent-color); box-shadow: 0 0 5px var(--accent-glow); }
.map-container { height: 350px; border-radius: 10px; overflow: hidden; margin-bottom: 30px; border: 1px solid #ddd; }
.contact-details p { font-size: 1.1rem; margin-bottom: 15px; display: flex; align-items: center; }
.contact-details i { color: var(--accent-color); margin-right: 15px; width: 20px; text-align: center; }
.contact-details a { color: var(--text-dark); text-decoration: none; transition: color var(--transition-speed); }
.contact-details a:hover { color: var(--accent-color); }
.social-links { margin-top: 20px; }
.social-links a { color: var(--text-dark); font-size: 1.8rem; margin-right: 20px; transition: color var(--transition-speed); }
.social-links a:hover { color: var(--accent-color); }

.footer { padding: 40px 0; }
.footer__container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 20px; text-align: center; }
.footer .logo-link { height: 60px; }
.footer-nav { display: flex; flex-wrap: wrap; justify-content: center; }
.footer-nav .nav-link { text-decoration: none; margin: 5px 15px; transition: color var(--transition-speed); }
.footer-nav .nav-link:hover { color: var(--accent-color); }
.footer__contacts { text-align: right; }
.footer__contacts .phone-link { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 5px; transition: color var(--transition-speed); text-decoration: none; }
.footer__contacts p { font-size: 0.9rem; margin: 0; }
.footer__contacts .phone-link:hover, .footer__contacts a:hover i { color: var(--accent-color); }

.modal { display: none; position: fixed; z-index: 3000; left: 0; top: 0; width: 100%; height: 100%; overflow: auto; background-color: rgba(0,0,0,0.7); animation: fadeIn 0.5s; }
.modal-content { background-color: #fff; color: var(--text-dark); margin: 15% auto; padding: 40px; border-radius: 10px; max-width: 500px; width: 90%; position: relative; text-align: center; box-shadow: 0 10px 30px rgba(0,0,0,0.5); animation: slideIn 0.5s; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideIn { from { transform: translateY(-50px); opacity: 0; } to { transform: translateY(0); opacity: 1; }}
.close-modal { color: #aaa; position: absolute; top: 15px; right: 25px; font-size: 28px; font-weight: bold; cursor: pointer; }
.close-modal:hover { color: var(--text-dark); }
.modal-content h3 { margin-bottom: 10px; font-size: 1.8rem; }
.modal-content p { margin-bottom: 25px; color: #666; }
.modal-form .btn { width: 100%; }

@media (max-width: 1100px) { .main-nav { display: none; } }
@media (max-width: 992px) { :root { --header-height: 80px; } .header.scrolled { height: 70px; } .header__phones { display: none; } .burger-menu { display: flex; } .header__actions .btn-outline { padding: 8px 16px; font-size: 0.8rem; } .main-nav { padding-left: 0; } .hero__title { font-size: 3rem; } .hero__subtitle { font-size: 1.2rem; } .contacts-grid { grid-template-columns: 1fr; } .footer__container { flex-direction: column; text-align: center; gap: 30px; } .footer .logo-link { margin: 0 auto 20px;} .footer-nav { margin: 0; display: flex; flex-direction: column; gap: 10px;} .footer__contacts { text-align: center; } }
@media (max-width: 768px) { .section { padding: 80px 0; } .hero__title { font-size: 2.5rem; } .section-title { font-size: 2rem; } .slide-caption h3 { font-size: 1.5rem; } .slide-caption p { font-size: 0.9rem; } .gallery-grid { grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); } .modal-content { margin: 30% auto; } }
@media (max-width: 480px) { :root { --header-height: 70px; } .header.scrolled { height: 60px; } .hero__title { font-size: 2rem; } .hero__subtitle { font-size: 1rem; } .services-grid { grid-template-columns: 1fr; } .filter-btn { width: calc(50% - 10px); } .filter-btn[data-filter="all"] { width: 100%; } }
.header__actions { gap: 22px; } /* чуть больше места */
.header__social {
  display: flex;
  align-items: center;
  gap: 14px;
}
.header__social .social-link {
  font-size: 1.35rem;
  color: var(--text-light);
  line-height: 1;
  transition: color var(--transition-speed), transform var(--transition-speed);
}
.header__social .social-link:hover {
  color: var(--accent-color);
  transform: translateY(-2px);
}

/* можно скрыть соцсети на очень узких экранах, если нужно */
@media (max-width: 480px) {
  .header__social { gap: 12px; }
}

.mobile-social {
  display: flex;
  gap: 16px;
  margin-top: 12px;
}
.mobile-social .social-link {
  font-size: 1.6rem;
  color: var(--text-light);
  line-height: 1;
  transition: color var(--transition-speed), transform var(--transition-speed);
}
.mobile-social .social-link:hover {
  color: var(--accent-color);
  transform: translateY(-2px);
}