@import"https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap";*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--teal: #0d9488;--teal-light: #14b8a6;--teal-dark: #0f766e;--teal-pale: #ccfbf1;--bg: #f0faf9;--sidebar-bg: #ffffff;--card: #ffffff;--text: #0f172a;--text-muted: #64748b;--text-light: #94a3b8;--border: #e2e8f0;--border-light: #f1f5f9;--accent: #0ea5e9;--red: #ef4444;--green: #22c55e;--shadow: 0 1px 3px rgba(0,0,0,.06), 0 4px 16px rgba(13,148,136,.08);--radius: 14px;--sidebar-w: 265px;--font: "Plus Jakarta Sans", sans-serif;--mono: "JetBrains Mono", monospace}html{scroll-behavior:smooth}body{font-family:var(--font);background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}.app-layout{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-w);height:100vh;overflow:hidden;background:var(--sidebar-bg);border-right:1px solid var(--border);display:flex;flex-direction:column;position:fixed;left:0;top:0;z-index:100;transition:transform .3s cubic-bezier(.4,0,.2,1)}.sidebar-overlay{display:none;position:fixed;inset:0;background:#00000073;z-index:99;backdrop-filter:blur(2px)}.sidebar-overlay.show{display:block}.sidebar-logo{padding:20px 20px 16px;border-bottom:1px solid var(--border-light)}.logo-box{display:flex;align-items:center;gap:10px;text-decoration:none}.logo-icon{width:42px;height:42px;background:linear-gradient(135deg,var(--teal),var(--teal-light));border-radius:11px;display:flex;align-items:center;justify-content:center;flex-shrink:0;box-shadow:0 4px 12px #0d94884d}.logo-icon svg{width:22px;height:22px;fill:#fff}.logo-text{font-weight:800;font-size:18px;color:var(--text);letter-spacing:-.5px}.logo-sub{font-size:10px;color:var(--text-muted);font-weight:500;letter-spacing:.5px;text-transform:uppercase}.sidebar-nav{flex:1;padding:16px 12px;overflow-y:auto;overflow-x:hidden;scrollbar-width:thin;scrollbar-color:var(--border) transparent;min-height:0}.nav-section{margin-bottom:20px}.nav-section-header{display:flex;align-items:center;gap:8px;padding:8px 10px;cursor:pointer;border-radius:8px;transition:background .15s;user-select:none}.nav-section-header:hover{background:var(--border-light)}.nav-section-icon{width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.nav-section-icon.teal{background:var(--teal-pale)}.nav-section-icon.blue{background:#e0f2fe}.nav-section-title{font-weight:700;font-size:13px;color:var(--text);flex:1}.nav-section-arrow{font-size:11px;color:var(--text-muted);transition:transform .2s}.nav-section-arrow.open{transform:rotate(180deg)}.nav-items{padding-left:4px;margin-top:4px;overflow:hidden}.nav-items.collapsed{display:none}.nav-item{display:flex;align-items:center;gap:8px;padding:8px 10px 8px 42px;cursor:pointer;border-radius:8px;font-size:13px;font-weight:500;color:var(--text-muted);transition:all .15s;text-decoration:none;position:relative}.nav-item:before{content:"•";font-size:8px;position:absolute;left:26px;color:currentColor}.nav-item.no-bullet{padding-left:14px}.nav-item.no-bullet:before{display:none}.nav-item:hover{background:var(--border-light);color:var(--text)}.nav-item.active{background:var(--teal-pale);color:var(--teal);font-weight:600}.sidebar-lang{padding:16px 12px;border-top:1px solid var(--border-light)}.lang-label{font-size:10px;font-weight:700;color:var(--text-light);text-transform:uppercase;letter-spacing:.8px;margin-bottom:8px;padding:0 4px}.lang-grid{display:grid;grid-template-columns:1fr 1fr;gap:5px}.lang-btn{padding:7px 8px;border:1.5px solid var(--border);border-radius:8px;background:none;cursor:pointer;font-family:var(--font);font-size:12px;font-weight:600;color:var(--text-muted);transition:all .15s;display:flex;align-items:center;gap:5px}.lang-btn:hover{border-color:var(--teal);color:var(--teal)}.lang-btn.active{background:var(--teal);border-color:var(--teal);color:#fff}.lang-flag{font-size:14px}.main{margin-left:var(--sidebar-w);flex:1;min-height:100vh;display:flex;flex-direction:column}.topbar{background:#fff;border-bottom:1px solid var(--border);padding:0 32px;height:62px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:50}.topbar-title{font-size:15px;font-weight:700;color:var(--text)}.hamburger{display:none;background:none;border:none;cursor:pointer;padding:6px;border-radius:8px;transition:background .15s}.hamburger:hover{background:var(--border-light)}.content{width:100%;animation:fadeIn .25s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--border);padding:36px;margin-bottom:20px}.card-title{font-size:28px;font-weight:800;color:var(--text);text-align:center;margin-bottom:32px;letter-spacing:-1px}.about-card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--border);padding:28px 36px;margin-bottom:20px}.about-title{font-size:20px;font-weight:800;color:var(--text);margin-bottom:10px;letter-spacing:-.4px}.about-text{color:var(--text-muted);line-height:1.75;font-size:14px}.input-label{font-size:11px;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:.6px;margin-bottom:7px;display:block}.input-field{width:100%;padding:13px 16px;border:2px solid var(--border);border-radius:10px;font-family:var(--font);font-size:15px;font-weight:500;color:var(--text);background:#fff;transition:border-color 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.2s;letter-spacing:.2px}.reset-btn:hover{background:var(--teal-dark)}.color-output-row{margin-bottom:10px}.color-output-label{font-size:11px;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:.6px;margin-bottom:5px}.color-output{padding:11px 14px;border:1px solid var(--border);border-radius:9px;font-family:var(--mono);font-size:13px;color:var(--text);background:var(--border-light);cursor:pointer;user-select:all;transition:all .15s}.color-output:hover{background:var(--teal-pale);border-color:var(--teal-light)}.wc-layout{display:grid;grid-template-columns:1fr 210px;gap:20px}.wc-textarea{width:100%;min-height:270px;padding:14px 16px;border:2px solid var(--border);border-radius:11px;font-family:var(--font);font-size:14px;resize:vertical;outline:none;transition:border-color .2s;line-height:1.65;color:var(--text)}.wc-textarea:focus{border-color:var(--teal)}.stats-grid{display:grid;grid-template-columns:1fr 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(max-width: 900px){.card,.about-card{padding:22px}.card-title{font-size:24px}}@media (max-width: 600px){:root{--sidebar-w: 280px}.card,.about-card{padding:16px;border-radius:12px}.card-title{font-size:20px;letter-spacing:-.5px;margin-bottom:20px}.topbar{padding:0 14px;height:54px}.topbar-title{font-size:13px;max-width:140px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}div[style*="padding: 32px 24px"]{padding:16px 12px!important}.converter-row{flex-direction:column;gap:8px}.swap-btn{align-self:center;transform:rotate(90deg)}.wc-layout{grid-template-columns:1fr}.stats-grid{grid-template-columns:repeat(3,1fr)}.stat-value{font-size:20px}.diff-grid{grid-template-columns:1fr}.btn-grid{gap:6px}.tc-btn{padding:8px 12px;font-size:12px}.about-title{font-size:17px}.about-text{font-size:13px}.input-field{font-size:16px}.nav-item{font-size:13px;padding:9px 10px 9px 40px}}@media (max-width: 380px){.card-title{font-size:18px}.stats-grid{grid-template-columns:repeat(2,1fr)}.topbar-title{display:none}}@media (hover: none){.nav-item{min-height:44px;display:flex;align-items:center}.tc-btn{min-height:44px}.lang-btn{min-height:40px}}.sidebar-nav::-webkit-scrollbar{width:4px}.sidebar-nav::-webkit-scrollbar-track{background:transparent}.sidebar-nav::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}.sidebar-nav::-webkit-scrollbar-thumb:hover{background:var(--text-light)}