:root{--dos-bg:#0a0a0a;--dos-green:#0f0;--dos-green-bright:#39ff14;--dos-green-dim:#060}.dos-mode{background-color:var(--dos-bg)!important;color:var(--dos-green)!important;min-height:100vh}.dos-mode,.dos-mode *{font-family:VT323,Courier New,Consolas,monospace!important}.dos-mode:before{background:repeating-linear-gradient(0deg,rgba(0,0,0,.15),rgba(0,0,0,.15) 1px,transparent 0,transparent 2px);z-index:9999}.dos-mode:after,.dos-mode:before{content:"";position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none}.dos-mode:after{background:radial-gradient(ellipse at center,transparent 0,rgba(0,0,0,.3) 90%,rgba(0,0,0,.6) 100%);z-index:9998}.dos-box{border:2px solid var(--dos-green);background:var(--dos-bg);padding:1rem}.dos-box-double{border:4px double var(--dos-green);background:var(--dos-bg);padding:1.5rem}.dos-cursor{display:inline-block;animation:dos-blink 1s step-end infinite}@keyframes dos-blink{0%,to{opacity:1}50%{opacity:0}}.dos-btn{background:transparent;border:2px solid var(--dos-green);color:var(--dos-green);font-size:18px;padding:10px 30px;cursor:pointer;transition:all .1s;text-transform:uppercase}.dos-btn:hover{background:var(--dos-green);color:var(--dos-bg);box-shadow:0 0 10px var(--dos-green)}.dos-btn:active{transform:scale(.98)}.dos-btn:disabled{opacity:.5;cursor:not-allowed}.dos-input{background:transparent;border:none;border-bottom:2px solid var(--dos-green);color:var(--dos-green);font-size:18px;padding:5px 10px;outline:none}.dos-input:focus{border-bottom-color:var(--dos-green-bright);box-shadow:0 2px 10px rgba(0,255,0,.3)}.dos-input::-moz-placeholder{color:var(--dos-green-dim)}.dos-input::placeholder{color:var(--dos-green-dim)}.dos-glow{text-shadow:0 0 5px var(--dos-green),0 0 10px var(--dos-green)}.dos-glow-strong{text-shadow:0 0 5px var(--dos-green),0 0 10px var(--dos-green),0 0 20px var(--dos-green)}.dos-hr{border:none;border-top:1px dashed var(--dos-green-dim);margin:1rem 0}.dos-text-dim{color:var(--dos-green-dim)}.dos-text-bright{color:var(--dos-green-bright)}.dos-ascii{font-size:14px;white-space:pre;line-height:1.2}.dos-progress{font-size:16px;letter-spacing:2px}@media (max-width:640px){.dos-btn,.dos-mode{font-size:16px}.dos-btn{padding:8px 20px}.dos-ascii{font-size:10px}.dos-box,.dos-box-double{padding:1rem}}