/* ====================================
   ЮгИнжСфера — Modern Styles (Blue)
   ==================================== */

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #dbeafe;
  --dark: #0f172a;
  --dark-light: #1e293b;
  --gray: #64748b;
  --light-gray: #f1f5f9;
  --border: #e2e8f0;
  --white: #ffffff;
  --text: #0f172a;
  --text-light: #475569;
  --shadow: 0 4px 20px rgba(37,99,235,0.08);
  --shadow-hover: 0 8px 30px rgba(37,99,235,0.15);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

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

.header--scrolled {
  border-bottom-color: var(--border);
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo__img {
  width: 44px;
  height: 44px;
  object-fit: contain;
}

.logo__text {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--dark);
}

.logo__accent { color: var(--primary); }

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

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: var(--transition);
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav__link {
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-light);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav__link:hover {
  color: var(--primary);
  background: var(--primary-light);
}

.nav__link--cta {
  background: var(--primary);
  color: var(--white) !important;
  font-weight: 600;
}

.nav__link--cta:hover {
  background: var(--primary-dark) !important;
  color: var(--white) !important;
}

/* ============ HERO ============ */
.hero {
  padding: 140px 0 80px;
  background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(37,99,235,0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
}

.hero__title {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.15;
  color: var(--dark);
  margin-bottom: 20px;
  max-width: 700px;
}

.hero__subtitle {
  font-size: 1.15rem;
  color: var(--text-light);
  max-width: 520px;
  margin-bottom: 32px;
  line-height: 1.6;
}

.hero__stats {
  display: flex;
  gap: 40px;
  margin-top: 60px;
}

.stat { text-align: center; }

.stat__num {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 6px;
}

.stat__label {
  font-size: 0.85rem;
  color: var(--gray);
  font-weight: 500;
}

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

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

.btn--primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37,99,235,0.3);
}

/* ============ SECTION TITLES ============ */
.section-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 16px;
}

.section-title--center {
  text-align: center;
}

.section-subtitle {
  text-align: center;
  color: var(--gray);
  font-size: 1.05rem;
  margin-bottom: 48px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

section { padding: 100px 0; }

/* ============ ABOUT ============ */
.about { background: var(--white); }

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.about__desc {
  color: var(--text-light);
  margin-bottom: 16px;
  font-size: 1.02rem;
}

.about__features {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 24px 0;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
  color: var(--dark);
  font-size: 0.95rem;
}

.about__sro {
  background: var(--light-gray);
  border-left: 3px solid var(--primary);
  padding: 16px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-top: 24px;
}

.about__sro strong {
  display: block;
  font-size: 0.95rem;
  color: var(--dark);
  margin-bottom: 4px;
}

.sro-num {
  font-size: 0.85rem;
  color: var(--gray);
}

.about__gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.about__gallery img {
  border-radius: var(--radius);
  object-fit: cover;
  height: 220px;
  width: 100%;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.about__gallery img:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-hover);
}

/* ============ SERVICES ============ */
.services {
  background: var(--light-gray);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.service-card {
  background: var(--white);
  padding: 28px 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary);
}

.service-card__icon {
  color: var(--primary);
  margin-bottom: 16px;
}

.service-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
}

.service-card p {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.6;
}

/* ============ PROJECTS GALLERY ============ */
.projects { background: var(--light-gray); }

.projects__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.project-item {
  border-radius: var(--radius-sm);
  overflow: hidden;
  aspect-ratio: 1;
  cursor: pointer;
  position: relative;
}

.project-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.project-item:hover img {
  transform: scale(1.05);
}

.project-item::after {
  content: '🔍';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  font-size: 2rem;
  opacity: 0;
  transition: var(--transition);
}

.project-item:hover::after {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

/* Lightbox */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.9);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  cursor: pointer;
  animation: fadeIn 0.2s ease;
}

.lightbox-overlay img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: 4px;
}

.lightbox-close {
  position: fixed;
  top: 20px;
  right: 30px;
  color: white;
  font-size: 2.5rem;
  cursor: pointer;
  opacity: 0.8;
  transition: var(--transition);
}

.lightbox-close:hover { opacity: 1; }

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ============ DOCS ============ */
.docs { background: var(--white); }

.docs__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.doc-card {
  text-align: center;
  padding: 40px 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}

.doc-card:hover {
  box-shadow: var(--shadow);
  border-color: var(--primary);
}

.doc-card svg { margin-bottom: 16px; }

.doc-card p {
  font-size: 0.95rem;
  color: var(--text-light);
  font-weight: 500;
}

/* ============ CONTACTS ============ */
.contacts { background: var(--light-gray); }

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

.contacts__info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

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

.contact-item svg {
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-item strong {
  display: block;
  color: var(--dark);
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.contact-item p,
.contact-item a {
  color: var(--text-light);
  font-size: 0.95rem;
}

.contact-item a:hover { color: var(--primary); }

.contacts__form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contacts__form input,
.contacts__form textarea {
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: inherit;
  transition: var(--transition);
  background: var(--white);
}

.contacts__form input:focus,
.contacts__form textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

.contacts__form textarea { resize: vertical; min-height: 120px; }

/* ============ FOOTER ============ */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,0.7);
  padding: 40px 0;
}

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

.footer__info p {
  font-size: 0.85rem;
  line-height: 1.6;
}

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

.footer__nav a {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
}

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

/* ============ OBJECTS PAGE ============ */
.objects-page { padding-top: 100px; }

.objects-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 32px;
  min-height: 60vh;
}

.objects-sidebar {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow-y: auto;
  max-height: calc(100vh - 160px);
  position: sticky;
  top: 100px;
}

.objects-sidebar__header {
  padding: 16px 20px;
  background: var(--primary);
  color: var(--white);
  font-weight: 700;
  font-size: 1rem;
  position: sticky;
  top: 0;
  z-index: 2;
}

.objects-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.objects-list__item {
  padding: 12px 20px;
  cursor: pointer;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
  font-size: 0.9rem;
  color: var(--text-light);
  font-weight: 500;
  line-height: 1.4;
}

.objects-list__item:hover {
  background: var(--primary-light);
  color: var(--primary);
}

.partners {
  padding: 80px 0;
  background: var(--white);
}

.partners__grid {
  display: flex;
  flex-wrap: nowrap;
  justify-content: center;
  align-items: center;
  gap: 40px 60px;
  max-width: 1200px;
  margin: 40px auto 0;
  overflow-x: auto;
  padding: 0 20px;
}

.partner-item {
  display: flex;
  align-items: center;
  justify-content: center;
}

.partner-logo {
  max-height: 48px;
  width: auto;
  opacity: 1;
  transition: opacity 0.3s ease;
}

.objects-list__item--active {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
  border-left: 3px solid var(--primary);
}

.objects-detail {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  min-height: 400px;
}

.objects-detail__placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 400px;
  background: linear-gradient(135deg, var(--c-primary) 0%, #1a56db 100%);
  border-radius: 12px;
  color: white;
  text-align: center;
  gap: 0;
  margin-bottom: 24px;
}

.objects-detail__placeholder .placeholder-icon {
  font-size: 80px;
  line-height: 1;
}

.objects-detail__img {
  width: 100%;
  max-height: 700px;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: 24px;
}

.objects-detail__img[src*="universalnyy-sklad"] {
  max-height: 400px;
}

.objects-detail__title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}

.objects-detail__subtitle {
  font-size: 0.95rem;
  color: var(--gray);
  margin-bottom: 20px;
}

.objects-detail__desc {
  color: var(--text-light);
  line-height: 1.7;
}

.objects-detail__desc ul {
  list-style: disc;
  padding-left: 20px;
  margin: 12px 0;
}

.objects-detail__desc ul li {
  margin-bottom: 6px;
  color: var(--text-light);
}

.objects-detail__desc p {
  margin-bottom: 12px;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
  .services__grid { grid-template-columns: repeat(3, 1fr); }
  .projects__grid { grid-template-columns: repeat(3, 1fr); }
  .objects-layout { grid-template-columns: 260px 1fr; }
}

@media (max-width: 768px) {
  .nav__toggle { display: flex; }

  .nav__list {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 24px;
    gap: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
  }

  .nav--open .nav__list {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav__link { width: 100%; text-align: center; padding: 12px; }

  .hero { padding: 120px 0 60px; }
  .hero__title { font-size: 2rem; }
  .hero__stats { gap: 24px; flex-wrap: wrap; }

  .about__grid { grid-template-columns: 1fr; gap: 32px; }
  .about__gallery img { height: 200px; }

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

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

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

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

  .footer__inner { flex-direction: column; gap: 20px; text-align: center; }

  section { padding: 60px 0; }
  .section-title { font-size: 1.6rem; }
  .section-subtitle { font-size: 0.95rem; margin-bottom: 32px; }

  .objects-layout { grid-template-columns: 1fr; }
  .objects-sidebar { position: static; max-height: 300px; }
}

@media (max-width: 480px) {
  .hero__title { font-size: 1.65rem; }
  .services__grid { grid-template-columns: 1fr; }
  .projects__grid { grid-template-columns: 1fr 1fr; }
  .hero__stats { justify-content: center; }
  .hero__subtitle { font-size: 1rem; }
}

/* Document image cards */
.doc-card--img a {
  display: block;
  text-decoration: none;
}
.doc-card--img .doc-img {
  display: block;
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.doc-card--img .doc-img:hover {
  transform: scale(1.03);
  box-shadow: 0 4px 16px rgba(0,0,0,0.18);
}
.doc-card--img p {
  font-size: 13px;
  color: var(--gray);
  line-height: 1.4;
}
.docs__grid--images {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 24px;
}