main {
   overflow: hidden;
}

p.text {
   width: 100%;
   text-align: center;
}

.portfolio-hero {
   border-bottom-left-radius: 50px;
   border-bottom-right-radius: 50px;
   width: 100%;
   height: 60vh;
   background: linear-gradient(rgba(0,0,0,.7), rgba(0,0,0,.7)), url(../images/portfolio/vrch.foto.jpg);
   background-size: cover;
   background-position: center;
   display: flex;
   flex-direction: column;
   align-items: center;
   position: relative;
}

.portfolio-hero-content {
   position: absolute;
   top: 50%;
   left: 50%;
   transform: translate(-50%, -50%);
   text-align: center;
   color: var(--light);
   width: 80%;
}

.portfolio-hero-content h1 {
   font: 700 4rem var(--heading);
   margin-bottom: 1rem;
   text-shadow: 0 2px 10px rgba(0,0,0,.5);
}

.portfolio-hero-content p {
   font: 1.5rem var(--sub_heading);
   text-align: center;
   margin: 0;
   text-shadow: 0 1px 3px rgba(0,0,0,.5);
}

.portfolio-section {
   padding: 5% 15%;
   background-color: var(--light);
}

.portfolio-section.dark {
   background-color: var(--light);
}

.portfolio-grid {
   display: grid;
   grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
   gap: 30px;
   margin-top: 50px;
}

.portfolio-item {
   position: relative;
   border-radius: 15px;
   overflow: hidden;
   height: 300px;
   box-shadow: 0 5px 15px rgba(0,0,0,.1);
   transition: all 0.3s ease;
   cursor: pointer;
}

.portfolio-item:hover {
   transform: translateY(-10px);
   box-shadow: 0 15px 30px rgba(0,0,0,.2);
}

.portfolio-item img {
   width: 100%;
   height: 100%;
   object-fit: cover;
   transition: transform 0.5s ease;
}

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

.portfolio-overlay {
   position: absolute;
   bottom: 0;
   left: 0;
   width: 100%;
   padding: 20px;
   background: linear-gradient(to top, rgba(0,0,0,.8), transparent);
   color: var(--light);
   transform: translateY(100%);
   transition: transform 0.3s ease;
}

.portfolio-item:hover .portfolio-overlay {
   transform: translateY(0);
}

.portfolio-overlay h3 {
   font: 700 1.5rem var(--heading);
   margin-bottom: 10px;
}

.portfolio-overlay p {
   font: 1rem var(--sub_heading);
   margin-bottom: 0;
}

.clients-section {
   background-color: var(--light-gray);
   padding: 5% 15%;
}

.clients-grid {
   display: grid;
   grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
   gap: 50px;
   margin-top: 40px;
   align-items: center;
}

.client-logo,
.portfolio-modal {
   display: flex;
   align-items: center;
   justify-content: center;
}

.client-logo {
   height: 100px;
   border-radius: 10px;
   padding: 15px;
   transition: all 0.3s ease;
}

.client-logo img {
   max-width: 100%;
   max-height: 50px;
   filter: grayscale(100%);
   transition: filter 0.3s ease;
}

.client-logo:hover img {
   filter: grayscale(0%);
}

.portfolio-modal {
   position: fixed;
   top: 0;
   left: 0;
   width: 100%;
   height: 100%;
   background: rgba(0,0,0,.95);
   z-index: 1000;
   opacity: 0;
   visibility: hidden;
   transition: all 0.4s ease;
}

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

.modal-content {
   position: relative;
   width: 90%;
   max-width: 1200px;
   height: 90vh;
   background: #111;
   border-radius: 10px;
   overflow: hidden;
}

.modal-header {
   position: absolute;
   top: 0;
   left: 0;
   width: 100%;
   padding: 20px;
   background: rgba(0,0,0,.7);
   color: var(--light);
   z-index: 10;
   display: flex;
   justify-content: space-between;
   align-items: center;
}

.modal-title {
   font: 700 1.8rem var(--heading);
}

.close-modal {
   color: var(--light);
   font-size: 2rem;
   cursor: pointer;
   background: 0 0;
   border: 0;
   width: 40px;
   height: 40px;
   display: flex;
   align-items: center;
   justify-content: center;
}

.modal-slider {
   height: 100%;
   width: 100%;
   display: flex;
   overflow: hidden;
   position: relative;
}

.slider-image {
   min-width: 100%;
   height: 100%;
   object-fit: contain;
   transition: transform 0.5s ease;
}

.modal-nav {
   position: absolute;
   top: 50%;
   transform: translateY(-50%);
   width: 100%;
   display: flex;
   justify-content: space-between;
   padding: 0 20px;
   z-index: 5;
}

.nav-btn {
   background: rgba(255,255,255,.2);
   color: var(--light);
   border: 0;
   width: 50px;
   height: 50px;
   border-radius: 50%;
   font-size: 1.5rem;
   cursor: pointer;
   display: flex;
   align-items: center;
   justify-content: center;
   backdrop-filter: blur(5px);
   transition: all 0.3s ease;
}

.nav-btn:hover {
   background: var(--primary);
   transform: scale(1.1);
}

.modal-description {
   position: absolute;
   bottom: 0;
   left: 0;
   width: 100%;
   padding: 20px;
   background: rgba(0,0,0,.7);
   color: var(--light);
   z-index: 10;
}

.modal-description p {
   font: 1.1rem var(--sub_heading);
   max-width: 800px;
   margin: 0 auto;
   text-align: center;
}

@media (max-width: 992px) {
   .portfolio-grid {
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
   }
   
   .modal-content {
      height: 80vh;
   }
}

@media (max-width: 768px) {
   .portfolio-hero-content h1 {
      font-size: 2.5rem;
   }
   
   .portfolio-hero-content p {
      font-size: 0.9rem;
   }
   
   .portfolio-grid {
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 20px;
   }
   
   .portfolio-section {
      padding: 5%;
   }
   
   .portfolio-overlay {
      padding: 15px;
      transform: translateY(0);
   }
   
   .portfolio-overlay h3 {
      font-size: 1.3rem;
   }
   
   .clients-grid {
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      gap: 20px;
   }
}

@media (max-width: 480px) {
   .portfolio-hero-content h1 {
      font-size: 2rem;
   }
   
   .clients-section,
   .portfolio-section {
      padding: 10% 5%;
   }
   
   .portfolio-grid {
      grid-template-columns: 1fr;
   }
   
   .client-logo {
      height: 80px;
   }
}
@media (max-width: 1024px) {
   .portfolio-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
   }
}

@media (max-width: 768px) {
   .portfolio-grid {
      grid-template-columns: 1fr;
      gap: 15px;
   }
   
   .portfolio-item {
      height: 250px;
   }
   
   .portfolio-overlay h3 {
      font-size: 1.2rem;
   }
}