@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap";:root{--bg-base:#f8fafc;--bg-surface:#f1f5f9;--bg-card:#fff;--border:#e2e8f0;--border-hover:#cbd5e1;--text-main:#0f172a;--text-muted:#334155;--primary:#0f172a;--primary-fg:#fff;--radius-md:8px;--radius-lg:12px;--radius-xl:24px}*{box-sizing:border-box;margin:0;padding:0}#root{width:100%;max-width:100%;margin:0;padding:0}body{background-color:var(--bg-base);color:var(--text-main);-webkit-font-smoothing:antialiased;font-family:Inter,-apple-system,sans-serif;line-height:1.5}h1,h2,h3,h4{letter-spacing:-.03em;font-weight:600}a{color:inherit;text-decoration:none}.container{flex-direction:column;min-height:100vh;display:flex}.app-layout{flex:1;justify-content:center;width:100%;display:flex}.main-content{width:100%;max-width:1200px;padding:0 20px}.header{z-index:100;background-color:var(--bg-card);border-bottom:1px solid var(--border);position:relative;box-shadow:0 4px 20px #00000008}.header a{opacity:.85;transition:opacity .2s;color:var(--text-main)!important;font-weight:700!important}.header a:hover{opacity:1}.header-nav{flex-wrap:wrap;gap:10px;display:flex}.nav-category-btn{color:var(--text-main);cursor:pointer;border-radius:var(--radius-md);background:0 0;border:none;align-items:center;gap:6px;padding:8px 12px;font-size:.95rem;transition:all .2s;display:flex;font-weight:700!important}.nav-category-btn:hover{background:var(--bg-surface)}.header-nav-item{position:relative}.header-dropdown{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);opacity:0;visibility:hidden;z-index:50;min-width:260px;max-height:300px;padding:12px;transition:all .2s;position:absolute;top:100%;left:0;overflow-y:auto;transform:translateY(10px);box-shadow:0 20px 40px #00000014}.header-dropdown::-webkit-scrollbar{width:6px}.header-dropdown::-webkit-scrollbar-track{background:0 0;margin:10px 0}.header-dropdown::-webkit-scrollbar-thumb{background:var(--border-hover);border-radius:10px}.header-dropdown::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.header-dropdown.show{opacity:1;visibility:visible;transform:translateY(5px)}.nav-link{border-radius:var(--radius-md);align-items:center;gap:10px;padding:10px 12px;font-size:.95rem;display:flex;color:var(--text-muted)!important;font-weight:600!important}.nav-link:hover{background:var(--bg-surface);color:var(--text-main)!important}.search-container{align-items:center;display:flex;position:relative}.search-icon{color:var(--text-muted);position:absolute;left:12px}.search-bar{background:var(--bg-surface);border:1px solid var(--border);width:100%;color:var(--text-main);border-radius:var(--radius-md);padding:10px 10px 10px 40px;font-size:.9rem;transition:all .2s;box-shadow:none!important;outline:none!important}.search-bar:focus{border-color:var(--border-hover);background:var(--bg-card);box-shadow:0 0 0 3px #0000000d!important}.responsive-grid{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px;display:grid}.tool-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;transition:all .2s;box-shadow:0 4px 6px #00000005}.tool-card:hover{border-color:var(--border-hover);transform:translateY(-2px);box-shadow:0 10px 20px #0000000f}.tool-card-header{align-items:center;gap:15px;margin-bottom:12px;display:flex}.tool-card-icon{background:var(--bg-surface);border:1px solid var(--border);color:var(--text-main);border-radius:10px;padding:10px}.tool-card h3{color:var(--text-main);margin:0;font-size:1.1rem}.tool-card p{color:var(--text-muted);margin:0;font-size:.9rem;line-height:1.6}.tool-workspace{text-align:center;flex-direction:column;align-items:center;width:100%;max-width:1000px;margin:60px auto;padding:0 20px;display:flex}.tool-header{flex-direction:column;align-items:center;margin-bottom:50px;display:flex}.tool-header .back-btn{align-items:center;gap:8px;margin-bottom:20px;font-size:1.1rem;font-weight:600;transition:color .2s;display:inline-flex;color:var(--text-muted)!important}.tool-header .back-btn:hover{color:var(--text-main)!important}.tool-header h1{letter-spacing:-.04em;color:var(--text-main);margin-bottom:15px;font-size:3.5rem;font-weight:800;line-height:1.1}.tool-header p{color:var(--text-muted);max-width:650px;font-size:1.3rem;line-height:1.6}.tool-body{background:var(--bg-card);border:1px solid var(--border);border-radius:24px;flex-direction:column;align-items:center;width:100%;max-width:800px;padding:50px;display:flex;box-shadow:0 20px 50px #0000000d}.tool-body>div{width:100%}.form-group{text-align:left;width:100%;margin-bottom:25px}.form-group label{color:var(--text-main);margin-bottom:10px;font-size:1.1rem;font-weight:600;display:block}.form-control,.file-input{background:var(--bg-surface);border:2px solid var(--border);width:100%;color:var(--text-main);resize:vertical;border-radius:12px;padding:20px 24px;font-family:monospace;font-size:1.15rem;transition:all .2s}.form-control:focus,.file-input:focus{border-color:var(--text-muted);background:var(--bg-card);outline:none;box-shadow:0 0 0 4px #0000000d}.btn{cursor:pointer;border:none;justify-content:center;align-items:center;gap:12px;font-family:inherit;transition:all .2s;display:inline-flex}.btn-primary{background-color:var(--primary);color:var(--primary-fg);border-radius:16px;min-width:320px;margin:15px 0;padding:24px 50px;font-size:1.4rem;font-weight:700;box-shadow:0 10px 25px #0000001a}.btn-primary:hover{background-color:#334155;transform:translateY(-3px);box-shadow:0 15px 35px #00000026}.btn-primary:disabled{opacity:.6;cursor:not-allowed;box-shadow:none;transform:none}.btn-secondary{color:var(--text-main);border:2px solid var(--border);background-color:#0000;border-radius:12px;margin-top:15px;padding:16px 32px;font-size:1.1rem;font-weight:600}.btn-secondary:hover{background-color:var(--bg-surface);border-color:var(--border-hover)}.btn-danger{color:#fff;background-color:#ef4444;border-radius:16px;min-width:320px;margin:15px 0;padding:24px 50px;font-size:1.4rem;font-weight:700}.toast-container{z-index:1000;flex-direction:column;gap:10px;display:flex;position:fixed;bottom:24px;right:24px}.toast{border-radius:var(--radius-md);color:#fff;align-items:center;gap:10px;padding:16px 24px;font-weight:500;display:flex;box-shadow:0 10px 30px #00000026}.toast.success{background-color:#10b981}.toast.error{background-color:#ef4444}