:root{
  --bg:#191919;
  --muted:#bdbdbd;
  --active-bg:rgba(25,110,75,0.22);
  --hover-bg:rgba(255,255,255,0.02);
  --sidebar-collapsed:96px;
  --sidebar-expanded:240px;
  --transition:280ms cubic-bezier(.2,.9,.2,1);
  --panel-bg:#0f1113;
  --loader-bg:#191919;
  --header-bg:#0f1113;
  --content-box-bg:rgb(35,35,35);
}

*{box-sizing:border-box;}
html,body{height:100%;}

body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:#fff;
  font-family:"IBM Plex Mono",monospace;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  line-height:1.4;
  overflow-x:hidden;
  min-height:100vh;
  min-height:100dvh;
}

html{
  background:var(--bg);
  min-height:100vh;
  min-height:100dvh;
}

.page{
  margin-left:var(--sidebar-collapsed);
  transition:margin-left var(--transition);
  min-height:100vh;
  min-height:100dvh;
  display:flex;
  flex-direction:column;
  background:var(--bg);
}

.main{
  padding:32px;
  flex:1 1 auto;
  min-height:0;
  transition:opacity 300ms ease, transform 400ms cubic-bezier(.2,.9,.2,1);
  display:flex;
  align-items:center;
  justify-content:center;
}

.header{
  position:sticky;
  top:0;
  z-index:50;
  width:100%;
  padding:20px 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  background:var(--header-bg);
  border-bottom:1px solid rgba(255,255,255,0.04);
}

.logo{
  width:112px;
  height:112px;
  object-fit:contain;
  user-select:none;
  -webkit-user-drag:none;
}

.buttons{
  display:flex;
  gap:20px;
  align-items:center;
}

.btn{
  text-decoration:none;
  color:#fff;
  font-family:"JetBrains Mono",monospace;
  font-weight:600;
  font-size:16px;
  letter-spacing:0.4px;
  padding:6px 8px;
  border-radius:8px;
  opacity:0.95;
}

.content{
  width:100%;
  max-width:1000px;
  margin:0 auto;
}

.content-box{
  background:var(--content-box-bg);
  border-radius:10px;
  padding:50px 40px 40px 40px;
  width:100%;
  min-height:500px;
  border:1px solid rgba(255,255,255,0.08);
  position:relative;
  font-family:"JetBrains Mono",monospace;
  box-shadow:0 8px 32px rgba(0,0,0,0.4);
  opacity:0;
  transform:scale(0.95) translateY(20px);
  animation:terminalAppear 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
  animation-delay:0.1s;
  display:flex;
  flex-direction:column;
  justify-content:center;
  align-items:flex-start;
}

@media (min-width:721px){
  .content-box::before{
    cursor:move;
  }
  .content-box.dragging{
    position:fixed;
    z-index:1000;
  }
}

@keyframes terminalAppear{
  0%{
    opacity:0;
    transform:scale(0.95) translateY(20px);
  }
  100%{
    opacity:1;
    transform:scale(1) translateY(0);
  }
}

.content-box::before{
  content:'';
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:40px;
  background:rgba(0,0,0,0.25);
  border-radius:10px 10px 0 0;
  border-bottom:1px solid rgba(255,255,255,0.05);
}

.content-box::after{
  content:'';
  position:absolute;
  top:13px;
  left:14px;
  width:12px;
  height:12px;
  border-radius:50%;
  background:#ff5f57;
  box-shadow:
    20px 0 0 #ffbd2e,
    40px 0 0 #28c840,
    0 0 0 0.5px rgba(0,0,0,0.1) inset;
}

.content-box h1{
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:40px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-family:"JetBrains Mono",monospace;
  font-weight:600;
  margin:0;
  font-size:14px;
  color:rgba(255,255,255,0.7);
  z-index:1;
}

.content-box p{
  color:var(--muted);
  margin:0;
  line-height:1.8;
  font-size:17px;
}

.contact-buttons{
  display:flex;
  gap:20px;
  align-items:center;
  justify-content:center;
  margin-top:40px;
  flex-wrap:wrap;
  width:100%;
}

.contact-btn{
  background:rgba(255,255,255,0.06);
  border:1px solid rgba(255,255,255,0.12);
  color:#fff;
  padding:16px 32px;
  border-radius:10px;
  cursor:pointer;
  font-family:"JetBrains Mono",monospace;
  font-size:16px;
  display:flex;
  align-items:center;
  gap:12px;
  transition:all 0.2s ease;
  text-decoration:none;
  font-weight:500;
}

.contact-btn:hover{
  background:rgba(255,255,255,0.1);
  border-color:rgba(255,255,255,0.2);
  transform:translateY(-2px);
}

.contact-btn:active{
  transform:translateY(0);
}

.contact-separator{
  color:rgba(255,255,255,0.2);
  font-size:20px;
  user-select:none;
}

.footer{
  padding:8px 32px 10px;
  color:#999;
  border-top:1px solid rgba(255,255,255,0.03);
  flex-shrink:0;
  line-height:1.2;
}

.sidebar{
  position:fixed;
  left:0;
  top:0;
  height:100vh;
  height:100dvh;
  width:var(--sidebar-collapsed);
  background:linear-gradient(180deg,#0f1113,var(--bg));
  border-right:1px solid rgba(255,255,255,0.03);
  padding-top:18px;
  padding-bottom:18px;
  box-shadow:8px 0 20px rgba(0,0,0,0.4);
  overflow:visible;
  transition:width var(--transition),transform var(--transition);
  z-index:10;
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  justify-content:flex-start;
}

@media (hover:hover) and (min-width:720px){
  .sidebar{width:var(--sidebar-collapsed);}
  .sidebar:hover{width:var(--sidebar-expanded);}
  .page{margin-left:var(--sidebar-collapsed);}
  .sidebar:hover ~ .page{margin-left:var(--sidebar-expanded);}
}

.sidebar-nav{
  display:flex;
  flex-direction:column;
  gap:6px;
  width:100%;
  padding:8px;
}

.nav-btn{
  display:flex;
  gap:14px;
  align-items:center;
  text-decoration:none;
  color:#fff;
  padding:14px 12px 14px 5px;
  border-radius:12px;
  margin:6px 12px;
  transition:background var(--transition),transform var(--transition);
  overflow:hidden;
  white-space:nowrap;
  border:none;
  outline:none;
  box-shadow:none;
  background:transparent;
  cursor:pointer;
  width:calc(100% - 24px);
  text-align:left;
  justify-content:flex-start;
}

.nav-btn .icon{
  width:52px;
  height:52px;
  min-width:52px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
  margin-left:-2px;
}

.nav-btn svg{
  width:26px;
  height:26px;
  opacity:0.95;
}

.nav-btn .label{
  font-family:"JetBrains Mono",monospace;
  font-weight:600;
  font-size:16px;
  color:#fff;
  opacity:0;
  transform:translateX(-6px);
  transition:opacity var(--transition),transform var(--transition);
}

@media (hover:hover) and (min-width:720px){
  .sidebar:hover .nav-btn .label{opacity:1;transform:translateX(0);}
  .sidebar .nav-btn:hover{background:var(--hover-bg);transform:translateX(2px);}
}

.nav-btn.active,
.nav-btn[aria-current="page"]{
  background:var(--active-bg) !important;
  border:none !important;
  outline:none !important;
  box-shadow:none !important;
}

.nav-btn:focus,
.nav-btn:focus-visible,
.nav-btn:active{
  outline:none !important;
  border:none !important;
  box-shadow:none !important;
}

.lang-btn{
  justify-content:flex-start !important;
  padding-left:10px !important;
  width:calc(100% - 24px) !important;
  margin:6px 12px !important;
}

.lang-btn .icon{
  margin-left:-4px;
}

.lang-btn .label{
  opacity:0 !important;
  transform:translateX(-8px) !important;
}

@media (hover:hover) and (min-width:720px){
  .sidebar:hover .lang-btn .label{
    opacity:1 !important;
    transform:translateX(0) !important;
  }
}

.music-player{
  width:calc(100% - 20px);
  margin:0 10px 20px 1px;
  padding:0;
}

.music-player-content{
  display:flex;
  align-items:flex-start;
  justify-content:flex-start;
  flex-direction:column;
  gap:10px;
  transition:all var(--transition);
  padding:0 10px;
}

.track-cover-wrapper{
  position:relative;
  width:64px;
  height:64px;
  min-width:64px;
  flex-shrink:0;
}

.track-cover{
  width:100%;
  height:100%;
  border-radius:8px;
  object-fit:cover;
  display:block;
}

.track-loader{
  position:absolute;
  inset:0;
  background:rgba(0,0,0,0.85);
  border-radius:8px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:6px;
  padding:8px;
}

.track-loader.hidden{
  display:none;
}

.track-loader .preloader-progress{
  width:80%;
  height:3px;
}

.loader-text{
  font-size:9px;
  color:rgba(255,255,255,0.7);
  font-family:"JetBrains Mono",monospace;
  text-align:center;
  line-height:1.2;
}

.play-pause-btn{
  width:64px;
  height:64px;
  min-width:64px;
  border-radius:8px;
  background:rgba(255,255,255,0.08);
  border:1px solid rgba(255,255,255,0.12);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  transition:all 0.2s ease;
  flex-shrink:0;
  padding:0;
}

.play-pause-btn:hover{
  background:rgba(255,255,255,0.15);
  border-color:rgba(255,255,255,0.2);
  transform:scale(1.05);
}

.play-pause-btn:active{
  transform:scale(0.95);
}

.play-pause-btn svg{
  width:26px;
  height:26px;
}

.play-pause-btn.playing .play-icon{
  display:none;
}

.play-pause-btn.playing .pause-icon{
  display:block !important;
}

.track-info-wrapper {
  width: 100%;
  overflow: hidden;
  transition: all var(--transition);
}

.track-info-link {
  display: block;
  font-size: 11px;
  color: #fff;
  text-decoration: underline;
  opacity: 0;
  max-width: 0;
  white-space: nowrap;
  overflow: hidden;
  transition: opacity var(--transition), max-width var(--transition);
  font-family: "JetBrains Mono", monospace;
  margin-top: 4px;
}

@media (hover:hover) and (min-width:720px){
  .sidebar:hover .track-info-link {
    opacity: 1;
    max-width: 180px;
  }
}

@media (max-width:720px){
  .music-player{
    display:none;
  }
  body.menu-open .music-player{
    display:block;
  }
  body.menu-open .track-info-link {
    opacity: 1;
    max-width: 200px;
  }
}

.sidebar-close{
  display:none;
  position:fixed;
  z-index:10020;
  right:12px;
  top:12px;
  background:rgba(0,0,0,0.55);
  border:none;
  padding:10px;
  border-radius:10px;
  color:#fff;
  backdrop-filter:blur(4px);
}

.sidebar-toggle{
  display:none;
  position:fixed;
  z-index:70;
  left:12px;
  top:84px;
  background:rgba(0,0,0,0.55);
  border:none;
  padding:10px;
  border-radius:10px;
  color:#fff;
  backdrop-filter:blur(4px);
}

.sidebar-overlay{
  display:none;
  position:fixed;
  inset:0;
  z-index:10000;
  background:rgba(0,0,0,0.6);
  opacity:0;
  transition:opacity 250ms ease;
}

body.menu-open .sidebar-overlay{
  display:block;
  opacity:1;
}

body.menu-open .sidebar-toggle{
  display:none !important;
}

body.menu-open .sidebar{
  transform:translateX(0);
  z-index:10010;
}

@media (max-width:720px){
  .sidebar{
    width:var(--sidebar-expanded);
    transform:translateX(-110%);
    padding-top:40px;
    background:linear-gradient(180deg,var(--panel-bg),#070707);
    border-right:none;
    box-shadow:0 6px 30px rgba(0,0,0,0.6);
  }
  .page{margin-left:0;}
  .sidebar-close{display:block;}
  .sidebar-toggle{display:block;}
  .sidebar-nav .label{opacity:1;transform:none;}
  .sidebar-nav{align-items:flex-start;padding-left:16px;}
  .content-box{
    padding:50px 24px 32px 24px;
    min-height:400px;
  }
  .content-box h1{font-size:13px;}
  .content-box p{font-size:16px;line-height:1.7;}
  .contact-buttons{
    flex-direction:column;
    gap:12px;
    margin-top:30px;
  }
  .contact-btn{
    width:100%;
    max-width:280px;
    justify-content:center;
    padding:14px 20px;
  }
  .contact-separator{display:none;}
}

@media (max-width:420px){
  .logo{width:72px;height:72px;}
  .header{padding:14px;}
  .main{padding:16px;}
  .content-box h1{font-size:12px;}
  .content-box{
    padding:50px 20px 28px 20px;
    min-height:360px;
    border-radius:8px;
  }
  .content-box::before{
    height:36px;
    border-radius:8px 8px 0 0;
  }
  .content-box h1{height:36px;}
  .content-box::after{
    top:11px;
    left:12px;
    width:10px;
    height:10px;
    box-shadow:
      17px 0 0 #ffbd2e,
      34px 0 0 #28c840,
      0 0 0 0.5px rgba(0,0,0,0.1) inset;
  }
  .content-box p{font-size:15px;line-height:1.6;}
  .contact-btn{
    font-size:14px;
    padding:12px 18px;
  }
  .footer{padding:8px 16px 10px;}
  .sidebar-toggle{top:70px;}
}

#preloader{
  position:fixed;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  z-index:9999;
  background:var(--loader-bg);
  transition:opacity 600ms ease, visibility 600ms;
  opacity:1;
  visibility:visible;
}

#preloader.hidden{
  opacity:0;
  visibility:hidden;
  pointer-events:none;
}

.preloader-inner{
  display:flex;
  flex-direction:column;
  gap:14px;
  align-items:center;
  justify-content:center;
  width:min(360px,80vw);
}

.preloader-progress{
  width:100%;
  height:4px;
  border-radius:999px;
  background:rgba(255,255,255,0.12);
  overflow:hidden;
  box-shadow:0 0 0 1px rgba(255,255,255,0.06) inset;
}

.preloader-progress .bar{
  width:35%;
  height:100%;
  background:#fff;
  border-radius:999px;
  animation:progressMove 1.2s ease-in-out infinite;
}

@keyframes progressMove{
  0%{transform:translateX(-120%);}
  50%{transform:translateX(120%);}
  100%{transform:translateX(320%);}
}

.loading-dots{
  display:flex;
  gap:8px;
  align-items:center;
  justify-content:center;
}

.loading-dots .dot{
  width:9px;
  height:9px;
  border-radius:50%;
  background:#fff;
  opacity:0.18;
  transform:translateY(0);
  animation:dot-bounce 1s infinite ease-in-out;
}

.loading-dots .dot:nth-child(1){animation-delay:0s;}
.loading-dots .dot:nth-child(2){animation-delay:0.15s;}
.loading-dots .dot:nth-child(3){animation-delay:0.3s;}

@keyframes dot-bounce{
  0%{opacity:0.18;transform:translateY(0);}
  40%{opacity:1;transform:translateY(-8px);}
  80%{opacity:0.35;transform:translateY(0);}
  100%{opacity:0.18;transform:translateY(0);}
}

.project .cube{
  width:220px;
  aspect-ratio:1/1;
  display:flex;
  align-items:center;
  justify-content:center;
  margin:0 auto;
  border-radius:10px;
  overflow:hidden;
  background:rgba(0,0,0,0.08);
  box-shadow:0 6px 18px rgba(0,0,0,0.6);
  transform-style:preserve-3d;
}

.project .cube img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}

@media (max-width:720px){
  .project .cube{width:140px;}
}