/* ===== GRID SYSTEMS ===== */
.grid {
  display: grid;
  width: 100%;
}

.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

.gap-0 { gap: 0; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }
.gap-8 { gap: 2rem; }

/* Автогрид для проектов */
.grid-auto-fill {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 0;
}

/* ===== FLEX LAYOUT ===== */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.flex-row {
  flex-direction: row;
}

.items-center {
  align-items: center;
}

.items-start {
  align-items: flex-start;
}

.items-end {
  align-items: flex-end;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.justify-around {
  justify-content: space-around;
}

/* ===== SECTIONS ===== */
.section-full {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
}

.section-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
}

/* ===== POSITIONING ===== */
.position-relative { position: relative; }
.position-absolute { position: absolute; }
.position-fixed { position: fixed; }
.position-sticky { position: sticky; }

.top-0 { top: 0; }
.right-0 { right: 0; }
.bottom-0 { bottom: 0; }
.left-0 { left: 0; }

/* ===== SIDE NAVIGATION ===== */
.side-nav {
  position: fixed;
  left: 40px;
  bottom: 40px;
  z-index: 100;
  background: transparent;
}

.side-nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.side-nav-item {
  position: relative;
}

.side-nav-link {
  font-family: var(--font-primary);
  font-size: 0.9rem;
  font-weight: 500;
  color: #000000;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: all var(--transition);
  display: inline-block;
}

.side-nav-link:hover {
  transform: translateX(5px);
}

.side-nav-link::before {
  content: '';
  position: absolute;
  left: -15px;
  top: 50%;
  width: 6px;
  height: 6px;
  background: #000000;
  border-radius: 50%;
  opacity: 0;
  transition: opacity var(--transition);
  transform: translateY(-50%);
}

.side-nav-link:hover::before {
  opacity: 1;
}

/* Социальные кружки - ИСПРАВЛЕНО: теперь в ряд */
.side-social {
  display: flex;
  flex-direction: row; /* Изменено с column на row */
  gap: 0.75rem;
  margin-top: 1.5rem;
  flex-wrap: wrap; /* Для адаптивности */
}

.social-circle {
  width: 30px;
  height: 30px;
  border: 1.5px solid #000000;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #000000;
  text-decoration: none;
  transition: all var(--transition);
}

.social-circle img {
  width: 16px;
  height: 16px;
  object-fit: contain;
  display: block;
}

.social-circle:hover {
  background: #000000;
  color: var(--color-gray-light);
  transform: translateY(-3px);
}

/* ===== CONTENT LAYOUTS ===== */
.split-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.photo-container {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-gray-light);
  padding: 2rem;
  height: 100%;
  position: relative;
}

.photo-wrapper {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* ===== RESPONSIVE LAYOUT ===== */
@media (max-width: 1024px) {
  .split-layout {
    gap: 3rem;
  }
  
  .side-nav {
    left: 30px;
    bottom: 30px;
  }
}

@media (max-width: 768px) {
  .split-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .side-nav {
    position: static;
    padding: 2rem 1rem;
    border-top: 1px solid rgba(0, 0, 0, 0.2);
    margin-top: 2rem;
  }
  
  .side-nav-list {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem 2rem;
  }
  
  .side-nav-link::before {
    display: none;
  }
  
  .side-social {
    justify-content: flex-start; /* Изменено с center на flex-start */
    margin-top: 1rem;
  }
  
  .grid-auto-fill {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  }
}

@media (max-width: 480px) {
  .side-nav-link {
    font-size: 0.85rem;
  }
  
  .side-social {
    justify-content: flex-start; /* Оставляем слева на маленьких экранах */
    gap: 0.5rem;
  }
  
  .social-circle {
    width: 32px;
    height: 32px;
  }
  
  .grid-auto-fill {
    grid-template-columns: 1fr;
  }
  
  .section-content {
    padding: 1.5rem;
  }
}