*,
*::before,
*::after {
    box-sizing: border-box;
}
:root {
    --header-bg: #6c757d;
    --bg-color: #ffffff;
    --text-color: #333333;
    --card-bg: #f8f9fa;
    --nav-bg: #495047;
    --box-shadow:rgba(0,0,0,0.2);
    --bg-footer: #495057;
    --resume-btn: #495047;
    --resume-text: #ffffff;
}
body.dark{
    --header-bg: #1a1a1a;
    --bg-color: #121212;
    --text-color: #e0e0e0;
    --card-bg: #1e1e1e;
    --nav-bg: #1a1a1a;
    --box-shadow:rgb(255, 241, 241);
    --bg-footer: #1a1a1a;
    --resume-btn: #00f0ff;
    --resume-text: #121212;
}
html {
    scroll-behavior: smooth;
}
body {
    margin: 0;
    background-color: var(--bg-color);
    line-height: 1.5;
    transition: background-color 0.3s, color 0.3s;
    color: var(--text-color);
    font-family: Arial, sans-serif;
}
header {
    text-align: center;
    background-color: var(--header-bg) ;
    color: white;
    padding: 30px 20px;
}
.resume{
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 15px 20px;
    margin-top: 20px;
    background-color: var(--resume-btn);
    color: var(--resume-text) !important;
    text-transform: uppercase;
    font-weight: 800;
    letter-spacing: 1px;
    border-radius: 12px;
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4,0,0.2,1);
    border: 2px solid transparent;
    text-decoration: none !important;
}
.resume:hover{
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 8px 25px var(--resume-btn);
    border-color: var(--resume-text);
}
.resume::before{
    content: '';
    position: absolute;
    top: 0;
    left: -150%;
    width: 50%;
    height: 100%;
    background: linear-gradient(
        to right,
        transparent,
        rgba(255,255,255,0.4),
        transparent
    );
    transform: skewX(-25deg);
    transition: 0.7s;
}
.resume:hover::before{
    left: 150%;
}
 /* .resume::after{
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: 0.5s;
}
.resume:hover::after{
    left: 100%;
}  */
.menu-toggle{
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
}
.menu-toggle span{
    display: block;
    width: 25px;
    height: 3px;
    background-color: white;
    transition: 0.3s;
}
nav.nav {
    background-color: var(--nav-bg);
    display: flex;
    justify-content: center;
    padding: 10px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: transform 0.4s ease-in-out;
}

ul.nav {
    display: flex;
    flex-direction: row;
    justify-content: space-around;
    width: 50%;
    margin: 0;
    padding: 0;
    list-style-type: none;
}
ul.nav a:focus-visible{
    outline: 2px solid #00f0ff;
    outline-offset: 4px;
}
ul.nav a {
    color: white;
    font-weight: bold;
    text-decoration: none;
    transition: color 0.3s ease ;
}
ul.nav a:hover{
    color: #00f0ff;
    text-decoration: underline;
}
ul.nav a.active{
    color: #00f0ff !important;
    border-bottom: 2px solid #00f0ff;
    transition: 0.3s;
}
#theme-toggle{
    cursor: pointer;
    background: none;
    border: none;
    font-size: 1.2rem;
}

main{
    display: flex;
    gap: 20px;
    max-width: 1100px;
    margin: 20px auto;
    padding: 0 10px;
}

.content {
    flex: 1;
}
aside {
    max-width: 300px;
}
.card {
    background-color: var(--card-bg);
    color: var(--text-color);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 4px 10px var(--box-shadow);
    transition: 0.3s;
}
.card:hover{
    transform: scale(1.025);
    z-index: 1;
}

ol {
    padding-left: 20px;
}

footer {
    background-color: var(--bg-footer);
    color: white;
    padding: 20px;
        text-align: center;
}
.contacts {
    margin: 20px auto;
    max-width: 1100px;
}
.contacts a{
    font-family:'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif;
}
.contacts ul{
    
    justify-content: space-around;
    display: flex;
    list-style-type: none;
}
.contacts img{
    filter:drop-shadow(0px 1px 4px white);
    display: flex;
    width: auto;
    height: 40px;
    transition: 0.3s;
    will-change: transform;
}
.contacts img[src*="image/Facebook.png"]{
    margin: -5;
}
.contacts img:hover{
    transform: scale(1.5);
}
a {
    text-decoration: none;
    color: #0d6efd;
}
a:hover {
    text-decoration: underline;
}
@media (hover:hover) {
    .card:hover{
        transform: scale(1.025);
    }
}
@media (min-width: 781px){
    nav.nav.hidden{
        transform: none !important;
    }
    .menu-toggle {
        display: none;
    }
    .nav-list { 
        display: flex;
        list-style: none;
        gap: 20px;
    }
}
@media (max-width: 780px) {
    nav.nav { overflow: hidden; height: 60px; }

    ul.nav {
        width: 100%;
        transition: transform 0.5s ease;
    }

    ul.nav.swiped { transform: translateX(110%); }

    ul.nav.show {
        display: flex !important;
        position: fixed !important;
        top: 60px;
        left: 15px;
        width: 220px;
        flex-direction: column;
        background: var(--nav-bg);
        padding: 15px;
        border-radius: 12px;
        box-shadow: 0 10px 30px rgba(0,0,0,0.5);
        transform: translateX(0) !important;
        opacity: 1;
        z-index: 9999;
        pointer-events: auto;
    }

    ul.nav.show li { margin: 10px 0; }

    .menu-toggle {
        display: flex;
        flex-direction: column;
        gap: 5px;
        background: none; border: none;
        position: absolute; left: 15px;
        transform: translateX(-150%);
        transition: transform 0.4s ease;
    }

    .menu-toggle.visible { transform: translateX(0); }
    .menu-toggle span { width: 25px; height: 3px; background: white; }


    /* Адаптация остального контента */
    main {
        flex-direction: column;
    }
    aside {
        width: 100%;
        max-width: none;
    }
    .contacts ul {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 10px;
    }
    .contacts img {
        height: 40px;
        width: auto;
    }
    .skills-dashboard-wrapper{
        flex-direction: column;
        gap: 0px;
        align-items: center;
    }
    #skills-circle{
        transform: scale(1.6);
        margin-top: 100px;
        margin-right: 70px;
    }
    .dashboard{
        width: 100%;
    }
    #s_projects{
        display: block;
        position: static;
        overflow: hidden;
    }
    #project{
        width: 1000px;
    }
    #preview{
        display: none;
    }
}
.gradient-border {
    position: relative;
    border-radius: 10px;
    background: var(--card-bg) ;
    z-index: 1;
    transition: all 0.3s ease;
    border: 5px solid transparent;
    /* border: 4.8px solid blue; */
}
.gradient-border::before {
    content: "";
    position: absolute;
    top: -5px; left: -5px; right: -5px; bottom: -5px;
    border-radius: 12px;
    padding: 5px;
    background: linear-gradient(90deg, #ff6ec4, #7873f5, #00f0ff, #ff6ec4);
    background-size: 300% 300%;
    -webkit-mask: 
        linear-gradient(#fff 0 0) content-box,
        linear-gradient(#fff 0 0);
    -webkit-mask-composite: destination-out;
    mask-composite: exclude;
    animation: gradient-animation 3s linear infinite;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}
.gradient-border:hover::before {
    opacity: 1;
}
@keyframes gradient-animation {
    0% {background-position: 0% 50%;}
    50% {background-position: 100% 50%;}
    100% {background-position: 0% 50%;}
}
main:has(.card:hover) .card:not(:hover){
    filter:brightness(0.5) grayscale(0.8);
    opacity: 0.5;
    transition: 0.3s ease;
 } 
 main .card:hover{
    filter: brightness(1.2) grayscale(0);
    opacity: 1;
    transform: scale(1.025);
    z-index: 10;
 }
 footer::before {
    display: none !important;
}
/* I intentionally excluded footer from scroll-based navigation logic */
#skills-circle{
    /* margin-top: 100px; */
    display:grid;
    grid-template-columns: 60px 60px 60px;
    grid-template-rows: 60px 60px 60px;
    grid-template-areas: 
    "left-top       top     right-top"
    "left           center  right"
    "left-bottom    bottom  right-bottom";
    justify-content: start;
    align-items: center;
    height: 300px;
    padding-top: 50px;
    transition: 0.3s;
    position: relative;
}
#skills-circle > div{
    font-family: Arial, Helvetica, sans-serif ;
    text-align: center;
    font-weight: bold;
    color: white;
    align-content: center;
}
#skills-circle > div > a{
    cursor:default;
    text-decoration: none;
    color: white;
}
#skills-circle > div > a > abbr{
    cursor:default;
    text-decoration: none;
    color: white; 
}
#skills-circle:hover, #left-top:hover, #right-top:hover, #right-bottom:hover, #left-bottom:hover, #center:hover{
    transform: scale(1.1);
    
}
#left-top{
    width: 100px; 
    height: 100px;
    background-color: blue;
    border-radius: 100px 0 0 0;
    grid-area: left-top;
    transition: 0.3s;
}

#right-top{
    width: 100px; 
    height: 100px;
    background-color: red;
    border-radius: 0 100px 0 0;
    grid-area: right-top;
    transition: 0.3s;
}
#right-bottom{
    width: 100px;
    height: 100px;
    background-color: green;
    border-radius: 0 0 100px 0;
    grid-area:right-bottom;
    transition: 0.3s;
}
#left-bottom{
    width: 100px;
    height: 100px;
    background-color: orange;
    border-radius: 0 0 0 100px;
    grid-area:left-bottom;
    transition: 0.3s;
}
#center{
    position: absolute;
    width: 100px;
    height: 100px;
    background-color: tomato;
    border-radius: 50%;
    transition: border 0.3s;
    border: 10px solid var(--card-bg);
    grid-area: center;
    transition: 0.3s;
}
.skills-dashboard-wrapper {
    display: flex;
    align-items: center;
    gap: 150px;
    justify-content:left;
    flex-wrap: wrap;
}
.dashboard {
    display: flex;
    flex-direction: column;
    gap: 15px;
    min-width: 300px;
}
.skill-level > span {
    font-weight: bold;
    color: var(--text-color);
}
.bar {
    position: relative;
    width: 100%;
    height: 20px;
    text-align: center;
    background-color: #ddd;
    border-radius: 10px;
    overflow: hidden;
}
.fill {
    height: 100%;
    background: linear-gradient(90deg, #00f0ff, #7873f5);
    border-radius: 10px;
}
.level {
    position: absolute;
    top: 50%;
    left: 50%; 
    transform: translate(-50%, -50%);
    font-weight: bold;
    color: black;
    pointer-events: none;
}
#s_projects{
    display: grid;
    grid-template-areas:
    "p_header img"
    "links    img";
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 100px 100px;
    align-items: center;
}

#s_projects > h2{
    grid-area: p_header;
}
#project{
    grid-area: links;
}
#preview{
    grid-area: img;
    position: relative;
    text-align: center;
    width: 300px;
    height: 200px;
    overflow: hidden;
    opacity: 0;
    transition: opacity 0.5s ease;
    border-radius: 10px;
}
#preview.shows {
    opacity: 1;
}
#text_preview{
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    color: white;
    background-color: rgba(0, 0, 0, 0.4);
    padding: 2px 5px;
    border-radius: 10px;
    width: 300px;
}
.img_preview{
    z-index: 1;
    position: absolute;
    max-width: 300px;
    max-height: 200px;
    opacity: 0;
    top: 40px;
    left: 0;
    transition: opacity 1s ease;
    bottom: 0;
}
.img_preview.shows{
    opacity: 1;
    transform: scale(1.05);
}

/* CSS для модалки */
.modal{
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.7);
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: 0.3s ease;
    opacity: 0;
}

.modal-content{
    position: absolute;
    background-color: var(--card-bg);
    border-radius: 10px;
    padding: 20px;
    width: 400px;
    max-width: 90%;
    box-shadow: 0 5px 15px var(--box-shadow);
}

#modal-close{
    position: absolute;
    top: 10px;
    right: 15px;
    cursor: pointer;
    font-size: 24px;
}