@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@300;700&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    text-decoration: none;
    border: none;
    outline: none;
    scroll-behavior: smooth;
    font-family: 'Montserrat', sans-serif;
}

:root{
    --bg-color: #ffffff;
    --secound-bg-color: #d6bd98;
    --text-color:  #1a3636;
    --main-color:   #677d6a;
}

html{
    font-size: 60%;
    overflow: auto;
}

body{
    background: var(--bg-color);
    color: var(--main-color)
}
/* scrollbar */
::-webkit-scrollbar{
    width: 10px;
}
::-webkit-scrollbar-thumb{
    background-color: var(--main-color);
}
::-webkit-scrollbar-track{
    background-color: var(--bg-color);
    width: 50px;
}

/* Header */
.header{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 4rem 12% 4rem;
    background: rgba(214, 189, 152, 0.1);
    backdrop-filter: blur(10px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 5;
}

.logo{
    font-size: 3rem;
    color: var(--main-color);
    font-weight: 800;
    cursor: pointer;
    transition: 0.3s ease;
    
}

.logo:hover{
    transform: scale(1.1);
}

.logo span{
    text-shadow: 0 0 25px var(--main-color);
}

.navbar a{
    font-size: 1.8rem;
    color: var(--main-color);
    margin-left: 4rem ;
    font-weight: 500;
    transition: 0.3s ease;
    border-bottom: 3px solid transparent;
}

.navbar a:hover,
.navbar a.active{
    color: var(--text-color);
    border-bottom: 3px solid var(--text-color);

}
#menu-icon{
    font-size: 3.6rem ;
    color: var(--main-color);
    display: none;
}

section{
    min-height: 100vh;
    padding: 6rem 12% 6rem;
}

/* Home */
 .home{
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15rem;

 }
 .home-content{
    display: flex;
    flex-direction: column;
    align-items: baseline;
    text-align: left;
    justify-content: center;
    margin-top: 3rem;
 }
 span{
    color: var(--main-color);
 }

 .logo span{
    color: var(--main-color);
 }
 .home-content h3{
    margin-bottom: 2rem;
    margin-top: 1rem;
    font-size: 3.5rem;
 }

 .home-content h1{
    font-size: 7rem;
    font-weight: 700;
    margin-top: 1.5rem;
    line-height: 1;
 }

 .home-img{
    border-radius: 50%;
 }

 .home-img img{
    position: relative;
    top: 3rem;
    width: 32vw;
    box-shadow: 0 0  25px var(--main-color);
    border-radius: 50%;
    cursor: pointer;
    transition: 0.4s ease-in-out;
 }
 .home-img img:hover{
    box-shadow: 0 0 25px var(--main-color), 
    0 0 50px var(--main-color),
    0 0 100px var(--main-color) ;
 }
 .social-icons a{
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 4.5rem;
    height: 4.5rem;
    background: transparent;
    border: 2px solid var(--main-color);
    font-size: 2.5rem;
    border-radius: 50%;
    color: var(--main-color);
    margin: 3rem 1.5rem 3rem 0;
    transition: 0.3s ease-in-out;
 }

 .social-icons a:hover{
    color: var(--main-color);
    transform: scale(1.3)translateY(-5px);
    box-shadow: 0 0 25px var(--text-color);
    background-color: var(--text-color);
 }

 .btn{
    display: inline-block;
    padding: 1rem 2.8rem;
    background: var(--main-color);
    box-shadow: 0 0  25px var(--main-color);
    border-radius: 4rem;
    font-size: 1.6rem;
    color: white;
    border: 2px solid transparent;
    letter-spacing: 0.1rem;
    font-weight: 600;
    transition: 0.3s ease-in-out;
    cursor: pointer;
 }

 .btn:hover{
    transform: scale(1.05);
    box-shadow: 0 0 50px var(--main-color);
 }

 .btn-group{
    display: flex;
    align-items: center;
    gap: 1.5rem;
 }

 .btn-group a:nth-of-type(2){
    background-color: var(--main-color);
    color: white ;
    border: 2px solid var(--main-color);
    box-sizing: 0 0 25px transparent;
 }

 .btn-group a:nth-of-type(2):hover{
    box-shadow: 0 0 25px var(--main-color);
    background-color: var(--main-color);
    color: white;

 }
 .text-animation{
    font-size: 34px;
    font-weight: 600;
    min-width: 280px;
 }

 .text-animation span{
    position: relative;
 }

 .text-animation span::before{
    content: "Computer Science Engineer";
    color: var(--text-color);
    animation: words 20s infinite;
 }
 .text-animation span::after{
    content: "";
    background-color: var(--bg-color);
    position: absolute;
    width: calc(100% + 8px);
    height: 100%;
    border-left: 3px solid var(--bg-color);
    right: -8px;
    animation: cursor 0.6s infinite, typing 20s steps(14) infinite;
 }
 @keyframes cursor{
    to{
        border-left: 2px solid var(--text-color);
    }
 }

 @keyframes words{
    0%,
    20%{
content: "Computer Science Engineer";
}
21%, 
40%{
    content: "Master Degree Student";
}
41%, 
60%{
    content: "Computer Science Engineer";
}
61%,
80%
{
    content: "Master Degree Student";
}
81%, 
100%{
    content: "Computer Science Engineer";
}
}

@keyframes typing{
    10%, 
    15%,
    30%, 
    35%,
    50%,
    55%,
    70%,
    75%,
    90%,
    95%{
width: 0;
    }
    5%,
    20%,
    25%,
    40%,
    45%,
    60%,
    65%,
    80%,
    85%{
        width: calc(100% + 8px);
    }
}

/* About me */
.heading{
    font-size: 8rem;
    text-align: center;
    margin: 5rem 0 ;
}

.about-description {
    font-size: 2.5rem;
    padding: 1.3rem;
    line-height: 3rem;
    color: var(--main-colorr);
    text-align: justify;
  }

/* Education */

.edu{
    padding: 100px 15px;
    background: var(--bg-color);
}
.edu h2{
    margin-bottom: 5rem;
}
.timeline-items{
    max-width: 1200px;
    margin: auto;
    display: flex;
    flex-wrap: wrap;
    position: relative;
}

.timeline-items::before{
    content: "";
    position: absolute;
    width: 5px;
    height: 100%;
    background-color: var(--main-color);
    left: calc(50% - 1px);
}

.timeline-item{
    margin-bottom: 40px;
    width: 100%;
    position: relative;
}

.timeline-item:last-child{
    margin-bottom: 0;
}

.timeline-item:nth-child(odd){
padding-right: calc(50% + 30px);
text-align: right;
}

.timeline-item:nth-child(even){
    padding-left: calc(50% + 30px);
}

.timeline-dot{
    height: 21px;
    width: 21px;
    background-color: var(--secound-bg-color);
    box-shadow: 0 0 25px var(--text-color),
                0 0 50 px var(--text-color);
    position: absolute;
    left: calc(50% - 8px);
    border-radius: 50%;
    top: 10px;
}

.timeline-date{
    font-size: 20px ;
    font-weight: 800;
    color: var(--secound-bg-color);
    margin: 6px 0 15px;
}

.timeline-content{
    background: rgba(214, 189, 152, 0.1);
   /* background-color: var(--bg-color);*/
    border: 3px solid var(--main-color);
    padding: 30px 50px;
    border-radius: 4rem;
    box-shadow: 0 0 10px var(--main-color);
    cursor: pointer;
    transition: 0.3s ease-in-out;
}

.timeline-content:hover{
    transform: scale(1.05);
    box-shadow: 0 0 25px var(--main-color);
}

.timeline-content h3{
    font-size: 20px;
    color: var(--text-color);
    margin: 0 0 10px;
    font-weight: bold;
}
.timeline-content h1{
    font-size: 18px;
    color: var(--main-color); /* lub inny kolor, np. #ff6b35, #007acc */
    margin: 5px 0 15px;
    font-weight: bold;
    text-align: center;
}

.timeline-content p{
    color: var(--text-color);
    font-size: 16px;
    font-weight: 300;
    line-height: 22px;
}

/* Projects  */

/* Projects Section */
.projects {
    background: var(--bg-color);
}

.projects-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 3rem;
}

.project-item {
    flex: 0 0 calc(33.333% - 3rem);
    max-width: calc(33.333% - 3rem);
    display: flex;
    flex-direction: column;
    border: 3px solid var(--main-color);
    border-radius: 2rem;
    padding: 2rem;
    box-shadow: 0 0 10px var(--main-color);
    position: relative;
    overflow: hidden;
    transition: 0.4s ease-in-out;
}

.project-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 0 25px var(--main-color);
}

.project-item::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 5px;
    background: var(--main-color);
    bottom: 0;
    left: 0;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s ease-out;
}

.project-item:hover::before {
    transform: scaleX(1);
    transform-origin: left;
}

.project-img {
    height: auto;
    overflow: hidden;
    border-radius: 1rem;
    border: 2px solid var(--main-color);
    margin-bottom: 1.5rem;
}

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

.project-item:hover .project-img img {
    transform: scale(1.1);
}

.project-content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.project-content h3 {
    font-size: 2.2rem;
    color: var(--text-color);
}

.project-content p {
    font-size: 1.5rem;
    line-height: 2.2rem;
    color: var(--text-color);
    margin-bottom: 1.5rem;
}

/* Project links styling */
.project-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-top: auto;
}

.github-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.6rem;
    color: var(--main-color);
    font-weight: 600;
    transition: 0.3s ease;
}

.github-link i {
    font-size: 2rem;
}

.github-link:hover {
    color: var(--text-color);
    transform: translateY(-3px);
}

/* Responsive design for projects section */
@media (max-width: 1024px) {
    .project-item {
        flex: 0 0 calc(50% - 3rem);
        max-width: calc(50% - 3rem);
    }
}

@media (max-width: 768px) {
    .project-item {
        flex: 0 0 100%;
        max-width: 100%;
    }
    
    .project-img {
        height: 20rem;
    }
}


/* TECHNOLOGIES */


.technologies-content {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    padding: 2rem;
    flex-wrap: wrap;
  }
  
  .technologies-item {
    padding: 2rem;
    border: 3px solid var(--main-color);
    box-shadow: var(--main-color);
    border-radius: 1rem;
    transition: all 0.3s ease-in-out;
    background-color: var(--main-color); 
  }
  
  .technologies-item:hover {
    transform: scale(1.05);
    box-shadow: 0 0 25px var(--main-color);
  }
  
  .technologies-item img {
    width: 6rem;
    height: 6rem;
  }
  
  .technologies-item-title {
    text-align: center;
    margin-top: 1rem;
    font-size: 1.5rem;
    color: var(--secound-bg-color);
    font-weight: bold;
  }
  
  .technologies-container .section-title {
    margin: 5rem auto 2rem auto;
  }
  
  @media only screen and (min-width: 1500px) {
    .technologies-item {
      margin: 2rem;
    }
  }
 
  /* Courses */
.courses {
    padding: 0 15px 100px 15px;
    background: var(--bg-color);
}

.courses-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.courses-description {
    font-size: 2.5rem;
    padding: 1.3rem;
    line-height: 3rem;
    color: var(--main-color);
    text-align: justify;
    margin-bottom: 4rem;
}

.courses-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
}

.course-item {
    background: white;
    border: 3px solid var(--main-color);
    border-radius: 2rem;
    padding: 3rem 2.5rem;
    box-shadow: 0 10px 30px rgba(255, 107, 53, 0.1);
    transition: all 0.5s ease;
    opacity: 0;
    transform: translateY(30px);
    animation: slideInUp 0.8s ease forwards;
}

.course-item:nth-child(1) { animation-delay: 0.2s; }
.course-item:nth-child(2) { animation-delay: 0.4s; }
.course-item:nth-child(3) { animation-delay: 0.6s; }
/* itd. dla kolejnych elementów */

@keyframes slideInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.course-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(255, 107, 53, 0.2);
}
  /*footer*/

.footer{
    position: relative;
    bottom: 0;
    width: 100%;
    padding: 40px 0;
    background-color: var(--bg-color);
}

.footer .social{
    text-align: center;
    padding-bottom: 25px;
    color: var(--main-color);
}
.footer .social a{
    font-size: 25px;
    color: var(--main-color);
    border: 2px solid var(--main-color);
    width: 42px;
    height: 42px;
    line-height: 42px;
    display: inline-block;
    text-align: center;
    border-radius: 50%;
    margin: 0 10px;
    transition: 0.3s ease-in-out;
}

.footer .social a:hover{
  transform: scale(1.2)translateY(-10px);
  background-color: var(--main-color);
  color:  black;
  box-shadow: 0 0 25px var(--main-color);
}

.footer .copyright{
    margin-top: 20px;
    text-align: center;
    font-size: 16px;
    color: white;
}

@media(max-width:1285px){
    html{
        font-size: 55%;
    }
    .services-container{
        padding-bottom: 7rem;
        grid-template-columns: repeat(2,1fr);
        margin: 0 5rem;
    }
}
@media(max-width:991px){
    header{
        padding:  2rem 3%;
    }
    section{
        padding: 10rem 3% 2rem;
    }
    .timeline-items::before{
        left: 7px;

    }
    .timeline-item:nth-child(odd){
        padding-right: 0;
        text-align: left;
    }
    .timeline-item:nth-child(odd),
    .timeline-item:nth-child(even)
    {
padding-left: 37px ;
    }
    .timeline-dot{
        left: 0;
    }
    .services{
        padding-bottom: 7rem;
    }
    .testimonials .wrapper{
        grid-template-columns: repeat(1,1fr);
    }
    .contact form{
        flex-direction: column;
    }
    .footer{
        padding: 2rem 3%;
    }
}
@media(max-width:895px){
    #menu-icon{
        display: block;

    }
    .navbar{
        position: absolute;
        top: 100%;
        right: 0;
        width: 50%;
        padding: 1rem 3%;
        background:  rgba(0, 0, 0, 0.804);
        backdrop-filter: blur(20px);
        border-bottom-left-radius: 2rem;
        border-left: 2px solid var(--main-color);
        border-bottom: 2px solid var(--main-color);
        display: none;
    }
    .navbar.active{
        display: block;
    }
    .navbar a{
        display: block;
        font-size: 2rem;
        margin: 3rem 0;
color: white;
    }
    .home{
        flex-direction: column-reverse;
        margin: 5rem 4 rem;
    }
    .home-content h3{
        font-size: 2.6rem;
    }
    .home-content h1{
        font-size: 8rem;
        margin-top: 3rem;

    }
    .home-img img{
        width: 56vw;
    }
    .services h2{
        margin-bottom: 3rem;
    }
    .services-container{
        grid-template-columns: repeat(1,1fr);
    }
}