@import"https://fonts.googleapis.com/css2?family=Poppins:wght@400;600;800&display=swap";:root{--bg-light: #f5f8ff;--bg-dark: #111;--card-light: white;--card-dark: #222;--text-light: #222;--text-dark: #eee;--accent: #2962ff;--accent-hover: #1745b5}*{box-sizing:border-box}body{font-family:Poppins,sans-serif;background:var(--bg-light);color:var(--text-light);margin:0;padding:0;transition:.3s;min-height:100vh}body.dark{background:var(--bg-dark);color:var(--text-dark)}header{position:fixed;top:0;right:0;padding:15px 20px;display:flex;gap:15px;z-index:100}.header-controls{display:flex;gap:10px;align-items:center}.btn{background:var(--accent);color:#fff;border:none;padding:8px 16px;border-radius:8px;cursor:pointer;font-family:Poppins,sans-serif;font-weight:600;font-size:14px;transition:background .3s}.btn:hover{background:var(--accent-hover)}body.dark .btn{background:var(--accent)}body.dark .btn:hover{background:var(--accent-hover)}#hamburger{background:none;border:none;cursor:pointer;display:none;padding:8px;flex-direction:column;gap:5px}.hamburger-bars{display:flex;flex-direction:column;gap:5px}.hamburger-bars .bar{width:22px;height:2px;background:var(--accent);border-radius:2px;transition:all .3s ease}#hamburger[aria-expanded=true] .bar:nth-child(1){transform:rotate(45deg) translate(8px,8px)}#hamburger[aria-expanded=true] .bar:nth-child(2){opacity:0}#hamburger[aria-expanded=true] .bar:nth-child(3){transform:rotate(-45deg) translate(7px,-7px)}.mobile-menu{position:fixed;top:60px;right:15px;background:var(--card-light);border-radius:10px;padding:15px;box-shadow:0 4px 15px #0003;z-index:99;transform:scale(0);transform-origin:top right;pointer-events:none;transition:transform .3s ease}body.dark .mobile-menu{background:var(--card-dark);box-shadow:0 4px 15px #00000080}.mobile-menu[aria-hidden=false]{transform:scale(1);pointer-events:auto}.menu-item{background:none;border:none;padding:10px 15px;cursor:pointer;color:var(--text-light);font-family:Poppins,sans-serif;width:100%;text-align:left;border-radius:5px;transition:background .2s}body.dark .menu-item{color:var(--text-dark)}.menu-item:hover{background:#2962ff1a}main{background:var(--card-light);width:100%;max-width:400px;margin:80px auto 20px;padding:30px;border-radius:15px;box-shadow:0 0 20px #0000001a}body.dark main{background:var(--card-dark);box-shadow:0 0 20px #00000080}h1{margin:0 0 5px;font-size:26px;color:var(--accent)}h3{margin:0 0 20px;font-size:14px;color:#666}body.dark h3{color:#aaa}.converter{display:flex;flex-direction:column;gap:12px}label{font-weight:600;font-size:13px;color:#555}body.dark label{color:#bbb}select,input{width:100%;padding:12px;border-radius:8px;border:1px solid #ddd;font-family:Poppins,sans-serif;font-size:14px;background:#fff;color:#333;transition:border-color .2s}body.dark select,body.dark input{background:#1a1a1a;color:#eee;border-color:#444}select:focus,input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 8px #2962ff4d}body.dark select:focus,body.dark input:focus{box-shadow:0 0 8px #2962ff33}#convert{width:100%;padding:12px;border:none;border-radius:8px;background:var(--accent);color:#fff;font-size:16px;font-weight:600;cursor:pointer;font-family:Poppins,sans-serif;transition:background .3s,transform .2s}#convert:hover{background:var(--accent-hover);transform:scale(1.02)}#convert:active{transform:scale(.98)}.result{margin-top:20px;padding-top:15px;border-top:1px solid #eee}body.dark .result{border-top-color:#333}.result p{margin:8px 0;font-size:14px}#convertedAmount,#currentRate{font-weight:700;color:var(--accent);font-size:16px}body.dark #convertedAmount,body.dark #currentRate{color:#4c8dff}.history-panel{position:absolute;top:60px;right:20px;width:300px;background:var(--card-light);border-radius:10px;padding:15px;box-shadow:0 4px 15px #0003;z-index:98;max-height:400px;overflow-y:auto;opacity:0;pointer-events:none;transform:translateY(-10px);transition:opacity .3s,transform .3s}body.dark .history-panel{background:var(--card-dark);box-shadow:0 4px 15px #00000080}.history-panel[aria-hidden=false]{opacity:1;pointer-events:auto;transform:translateY(0)}.history-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;padding-bottom:5px;border-bottom:1px solid #eee}body.dark .history-header{border-bottom-color:#444}.history-header strong{font-size:16px}.history-list{list-style:none;padding:0;margin:0}.history-item{padding:10px;border-radius:5px;margin-bottom:5px;cursor:pointer;transition:background .2s;line-height:1.4}.history-item:hover{background:#2962ff1a}body.dark .history-item:hover{background:#2962ff26}.history-meta{font-size:11px;color:#999}body.dark .history-meta{color:#888}.history-empty{text-align:center;padding:20px 0;color:#999}.btn.small{padding:5px 10px;font-size:12px}@media(max-width:768px){#conversion-history,#theme-toggle{display:none}#hamburger{display:flex}header{top:10px;right:10px;padding:10px}main{max-width:90%;margin:70px auto 20px;padding:20px}h1{font-size:20px}h3{font-size:12px}select,input,#convert{padding:10px;font-size:14px}.history-panel{position:fixed;top:70px;left:50%;transform:translate(-50%);width:90%;max-width:350px;max-height:60vh;z-index:1000;box-shadow:0 10px 30px #0000004d;opacity:0;pointer-events:none;transition:opacity .3s}.history-panel[aria-hidden=false]{opacity:1;pointer-events:auto;transform:translate(-50%)}}@media(min-width:769px)and (max-width:1024px){main{max-width:450px}}@media(min-width:769px){#mobile-history,#mobile-theme{display:none}#conversion-history,#theme-toggle{display:block}#hamburger{display:none}main{max-width:400px}}:root{font-family:Poppins,sans-serif;line-height:1.5;font-weight:400;background-color:#f5f8ff;color:#222;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;padding:0;min-width:320px;min-height:100vh}