:root{--primary-blue:#2563EB;--accent-green:#10B981;--dark-gray:#1F2937;--light-gray:#F8FAFC;--white:#FFFFFF;--gradient-primary:linear-gradient(135deg, #2563EB 0%, #1D4ED8 100%);--gradient-accent:linear-gradient(135deg, #10B981 0%, #059669 100%)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:"Inter",sans-serif;background:linear-gradient(135deg,#f8fafc 0,#e2e8f0 100%);color:#374151;line-height:1.6;overflow-x:hidden;min-height:100vh}.modern-header{background:rgba(255,255,255,.98);backdrop-filter:blur(20px);border-bottom:1px solid rgba(229,231,235,.8);transition:all .4s cubic-bezier(.4,0,.2,1);box-shadow:0 1px 3px rgba(0,0,0,.02);position:fixed;width:100%;top:0;z-index:1000}.modern-header.scrolled{box-shadow:0 4px 20px rgba(0,0,0,.08);background:rgba(255,255,255,.98)}.brand-logo{font-size:1.8rem;font-weight:800;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;position:relative;text-decoration:none}.brand-logo::after{content:"";position:absolute;bottom:-2px;left:0;width:0;height:2px;background:var(--gradient-accent);transition:width .3s ease}.brand-logo:hover::after{width:100%}.nav-container{max-width:1400px;margin:0 auto;padding:0 1.5rem}.nav-content{display:flex;align-items:center;justify-content:space-between;height:64px}.desktop-nav{display:flex;align-items:center;gap:2rem}.nav-links{display:flex;gap:2rem;align-items:center}.nav-link{color:#374151;text-decoration:none;font-weight:500;transition:color .3s ease;position:relative}.nav-link:hover{color:var(--primary-blue)}.nav-dropdown{position:relative}.dropdown-menu{position:absolute;top:100%;left:0;background:#fff;border-radius:12px;box-shadow:0 15px 40px rgba(0,0,0,.1);min-width:220px;opacity:0;visibility:hidden;transform:translateY(-10px);transition:all .3s ease;z-index:1000;border:1px solid rgba(229,231,235,.8);overflow:hidden}.dropdown-menu::before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;background:var(--gradient-primary)}.nav-dropdown:hover .dropdown-menu{opacity:1;visibility:visible;transform:translateY(0)}.dropdown-item{display:block;padding:12px 20px;color:#374151;text-decoration:none;border-bottom:1px solid rgba(243,244,246,.8);transition:all .2s ease;position:relative}.dropdown-item:hover{background:#f8fafc;color:var(--primary-blue);padding-left:28px}.dropdown-item:hover::before{content:"→";position:absolute;left:15px;color:var(--primary-blue)}.dropdown-item:last-child{border-bottom:none}.mobile-menu-btn{display:none;background:0 0;border:0;font-size:1.5rem;color:#374151;cursor:pointer;padding:.5rem}.mobile-nav{position:fixed;top:64px;left:0;width:100%;height:calc(100vh - 64px);background:#fff;transform:translateX(-100%);transition:transform .3s ease;z-index:999;overflow-y:auto;padding:2rem}.mobile-nav.active{transform:translateX(0)}.mobile-nav-links{display:flex;flex-direction:column;gap:1rem}.mobile-nav-link{color:#374151;text-decoration:none;font-weight:500;padding:1rem 0;border-bottom:1px solid #e5e7eb;font-size:1.1rem}.mobile-dropdown{margin:1rem 0}.mobile-dropdown-btn{width:100%;text-align:left;background:0 0;border:0;color:#374151;font-weight:500;font-size:1.1rem;padding:1rem 0;border-bottom:1px solid #e5e7eb;cursor:pointer;display:flex;justify-content:space-between;align-items:center}.mobile-dropdown-menu{padding-left:1rem;display:none}.mobile-dropdown-menu.active{display:block}.mobile-dropdown-item{display:block;padding:.75rem 0;color:#6b7280;text-decoration:none;border-bottom:1px solid #f3f4f6;transition:color .3s ease}.mobile-dropdown-item:hover{color:var(--primary-blue)}.tool-section{padding:2rem 1rem 0;margin-top:64px}.tool-container{background:#fff;border-radius:16px;box-shadow:0 10px 30px rgba(0,0,0,.08);overflow:hidden;margin-bottom:2rem;min-height:750px;display:flex;flex-direction:row}.tool-header{padding:1.5rem;border-bottom:1px solid #e2e8f0;background:#f8fafc;text-align:center}.tool-title{font-size:1.5rem;font-weight:700;color:#1e293b;margin-bottom:.5rem;animation:fadeIn 2s ease-in-out}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.tool-subtitle{color:#64748b}.tool-content{width:100%;flex-grow:1;background:#fff;min-height:650px;padding:2rem}.side-content{width:50%;padding:2rem;background:#f8fafc;border-left:1px solid #e2e8f0}.drop-zone{border:2px dashed #d1d5db;border-radius:16px;padding:3rem 2rem;text-align:center;transition:all .3s ease;background:var(--light-gray);margin-bottom:2rem}.drop-zone.dragover{border-color:var(--primary-blue);background:rgba(37,99,235,.05)}.drop-zone-label{display:inline-block;padding:14px 32px;background:var(--gradient-accent);color:#fff;border-radius:12px;font-weight:600;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 15px rgba(16,185,129,.3)}.drop-zone-label:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(16,185,129,.4)}.results-section{background:#f0fdf4;border:1px solid #bbf7d0;border-radius:16px;padding:2rem;margin-bottom:2rem;display:none}.results-section.show{display:block}.controls-section{background:var(--light-gray);padding:1.5rem;border-radius:12px;margin-bottom:2rem}.option-title{font-size:1.125rem;font-weight:700;color:var(--dark-gray);margin-bottom:1rem}.option-input,.option-select{width:100%;padding:12px 16px;border:1px solid #d1d5db;border-radius:8px;font-size:1rem;transition:all .2s ease;margin-bottom:.5rem}.option-input:focus,.option-select:focus{outline:0;border-color:var(--primary-blue);box-shadow:0 0 0 3px rgba(37,99,235,.1)}.format-btn.active{background:var(--gradient-accent);color:#fff}.filter-btn.active{background:var(--gradient-primary);color:#fff}.image-preview-container{background:#f8fafc;border-radius:12px;padding:1.5rem;margin-bottom:2rem}canvas{max-width:100%;display:block;margin:0 auto;image-rendering:high-quality}.action-buttons{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap;margin-bottom:2rem}.btn{padding:14px 32px;border-radius:12px;font-weight:600;text-decoration:none;display:inline-flex;align-items:center;gap:8px;transition:all .3s ease;border:0;cursor:pointer}.btn-primary{background:var(--gradient-accent);color:#fff;box-shadow:0 4px 15px rgba(16,185,129,.3)}.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 25px rgba(16,185,129,.4)}.btn-primary:disabled{opacity:.7;cursor:not-allowed;transform:none}.btn-secondary{background:var(--gradient-primary);color:#fff;box-shadow:0 4px 15px rgba(37,99,235,.3)}.btn-secondary:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(37,99,235,.4)}.btn-outline{background:0 0;color:#6b7280;border:2px solid #d1d5db}.btn-outline:hover{background:#f8fafc;color:var(--dark-gray);border-color:#9ca3af}.error-message{color:#dc2626;font-size:.875rem;margin-top:.5rem;display:none}.error-message.show{display:block}.success-message{color:#10b981;font-size:.875rem;margin-top:.5rem;display:none}.success-message.show{display:block}.hero-section{text-align:center;padding:2rem 1rem;background:linear-gradient(135deg,#2563eb 0,#1d4ed8 100%);color:#fff;border-radius:20px;margin:0 1rem 2rem}.hero-title{font-size:2.2rem;margin-bottom:.8rem;font-weight:800}.hero-subtitle{font-size:1.1rem;max-width:600px;margin:0 auto 1.5rem;opacity:.9}.features{display:flex;justify-content:center;gap:1.5rem;flex-wrap:wrap;margin-top:1.5rem}.feature{background:rgba(255,255,255,.15);padding:.75rem 1.5rem;border-radius:50px;font-size:.9rem;backdrop-filter:blur(10px)}.seo-content{background:#fff;padding:2.5rem;border-radius:16px;box-shadow:0 10px 30px rgba(0,0,0,.08)}.footer{background:#1e293b;color:#cbd5e1;padding:3rem 0 2rem;margin-top:3rem}.footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem;margin-bottom:2rem}.footer-section h3{color:#fff;margin-bottom:1.2rem;font-size:1.2rem}.footer-links{list-style:none}.footer-links li{margin-bottom:.7rem}.footer-links a{color:#94a3b8;text-decoration:none;transition:color .3s}.footer-links a:hover{color:#fff}.copyright{text-align:center;padding-top:2rem;border-top:1px solid #334155;color:#94a3b8;font-size:.9rem}.hidden{display:none!important}@media (max-width:768px){.desktop-nav{display:none}.mobile-menu-btn{display:block}.hero-title{font-size:1.8rem}.hero-subtitle{font-size:1rem}.features{flex-direction:column;align-items:center}.tool-container{flex-direction:column;min-height:600px}.tool-content{min-height:500px}.side-content{width:100%;border-left:none;border-top:1px solid #e2e8f0}.tool-header{text-align:center}.action-buttons{flex-direction:column;align-items:center}.btn{width:100%;justify-content:center}}@media (min-width:769px){.mobile-nav{display:none}}@media (min-height:900px){.tool-container{min-height:800px}.tool-content{min-height:700px}}@media (min-height:1080px){.tool-container{min-height:900px}.tool-content{min-height:800px}}