:root{--color-primary:#193c76;--color-primary-light:#2a5494;--color-accent:#2b9f6f;--color-accent-light:#3bb983;--color-yellow:#edd25f;--color-bg:#ffffff;--color-fg:#1a1a2e;--color-muted:#6b7280;--color-border:#e5e7eb;--color-card:#ffffff;--shadow-popup:0 20px 60px -10px rgba(25,60,118,0.3);--transition:all 0.3s cubic-bezier(0.4,0,0.2,1);--gradient-primary:linear-gradient(135deg,#193c76,#2a5494);--gradient-accent:linear-gradient(135deg,#2b9f6f,#3bb983)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:'Poppins',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:linear-gradient(135deg,#f5f7fa 0%,#e8eef5 100%);color:var(--color-fg);line-height:1.6;min-height:100vh}.container{width:100%;max-width:1200px;margin:0 auto;padding:4rem 1rem}.content-wrapper{max-width:1000px;margin:0 auto}.header{text-align:center;margin-bottom:3rem}.header h1{font-size:3.5rem;font-weight:800;color:var(--color-primary);margin-bottom:1rem}.subtitle{font-size:1.25rem;color:var(--color-muted);max-width:700px;margin:0 auto}.button-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem;margin-bottom:4rem}.demo-card{position:relative;background:var(--color-card);border:2px solid var(--color-border);border-radius:1rem;padding:2rem;cursor:pointer;overflow:hidden;transition:var(--transition);text-align:center}.demo-card:hover{transform:scale(1.02);box-shadow:var(--shadow-popup)}.demo-card:active{transform:scale(0.98)}.card-gradient{position:absolute;inset:0;background:var(--gradient-primary);opacity:0;transition:var(--transition)}.accent-gradient{background:var(--gradient-accent)}.login-gradient{background:linear-gradient(135deg,rgba(237,210,95,0.1),rgba(25,60,118,0.1))}.demo-card:hover .card-gradient{opacity:0.1}.card-content{position:relative;z-index:1}.card-icon{width:4rem;height:4rem;margin:0 auto 1rem;background:rgba(25,60,118,0.1);border-radius:1rem;display:flex;align-items:center;justify-content:center;color:var(--color-primary);transition:var(--transition)}.accent-icon{background:rgba(43,159,111,0.1);color:var(--color-accent)}.login-icon{background:rgba(237,210,95,0.1);color:var(--color-yellow)}.demo-card:hover .card-icon{transform:scale(1.1)}.card-content h3{font-size:1.5rem;font-weight:700;margin-bottom:0.5rem;color:var(--color-fg)}.card-desc{color:var(--color-muted);margin-bottom:1rem}.card-cta{display:inline-block;padding:0.5rem 1rem;background:rgba(25,60,118,0.1);color:var(--color-primary);font-weight:600;border-radius:0.5rem;transition:var(--transition)}.accent-cta{background:rgba(43,159,111,0.1);color:var(--color-accent)}.login-cta{background:rgba(237,210,95,0.1);color:var(--color-yellow)}.demo-card:hover .card-cta{background:var(--color-primary);color:white}.demo-card:hover .accent-cta{background:var(--color-accent);color:white}.demo-card:hover .login-cta{background:var(--color-yellow);color:white}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem;margin-top:4rem}.feature-card{background:var(--color-card);border:1px solid var(--color-border);border-radius:0.75rem;padding:1.5rem;text-align:center;transition:var(--transition)}.feature-card:hover{border-color:rgba(25,60,118,0.3)}.feature-icon{font-size:2.5rem;margin-bottom:0.5rem}.feature-card h4{font-weight:700;margin-bottom:0.25rem}.feature-card p{font-size:0.875rem;color:var(--color-muted)}.popup-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.6);backdrop-filter:blur(8px);display:none;align-items:center;justify-content:center;padding:1rem;z-index:1000;animation:fadeIn 0.3s ease-out}.popup-overlay.active{display:flex}.popup-container{position:relative;background:var(--color-bg);border-radius:1.5rem;box-shadow:var(--shadow-popup);max-width:900px;width:100%;max-height:90vh;overflow-y:auto;animation:scaleIn 0.3s ease-out}.login-container{max-width:400px}.close-btn{position:absolute;top:1rem;right:1rem;width:2.5rem;height:2.5rem;border-radius:50%;border:1px solid var(--color-border);background:rgba(255,255,255,0.9);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:var(--transition);z-index:10}.close-btn:hover{background:var(--color-border);transform:scale(1.1) rotate(90deg)}.popup-content{padding:2rem}.product-content{display:grid;grid-template-columns:1fr;gap:2rem}@media (min-width:768px){.product-content{grid-template-columns:1fr 1fr}}.product-gallery{display:flex;flex-direction:column}.main-image{position:relative;aspect-ratio:1;height:auto;width:100%;max-height:400px;border-radius:0.75rem;overflow:hidden;border:4px solid rgba(25,60,118,0.2)}.main-image img{width:100%;height:100%;object-fit:contain;transition:transform 0.5s ease}.main-image:hover img{transform:scale(1.1)}.thumbnails{display:grid;grid-template-columns:repeat(auto-fill,minmax(60px,1fr));gap:0.5rem;margin-top:1rem;max-width:100%}.thumbnail{aspect-ratio:1;border-radius:0.5rem;overflow:hidden;border:2px solid var(--color-border);cursor:pointer;transition:var(--transition);padding:0;background:none}.thumbnail:hover{transform:scale(1.05)}.thumbnail.active{border-color:var(--color-primary);box-shadow:0 4px 12px rgba(25,60,118,0.3)}.thumbnail img{width:100%;height:100%;object-fit:cover}.product-details{display:flex;flex-direction:column;justify-content:center}.product-details h2{font-size:1.5rem;line-height:1.4;margin-bottom:1rem}.product-features{margin-bottom:1.5rem;color:var(--color-muted)}.product-features p{margin-bottom:0.5rem}.add-to-cart-btn{width:100%;padding:1rem 1.5rem;background:var(--gradient-primary);color:white;font-weight:600;border:none;border-radius:0.75rem;cursor:pointer;transition:var(--transition)}.add-to-cart-btn:hover{transform:scale(1.02);box-shadow:0 8px 20px rgba(25,60,118,0.3)}.add-to-cart-btn:active{transform:scale(0.98)}.image-title{text-align:center;font-size:1.75rem;margin-bottom:1.5rem}.image-wrapper{border-radius:0.75rem;overflow:hidden}.image-wrapper img{width:100%;height:auto;max-height:75vh;object-fit:contain;transition:transform 0.5s ease}.image-wrapper:hover img{transform:scale(1.05)}.login-content{position:relative;background-repeat:no-repeat;background-position:center;background-size:contain}.login-content::before{content:'';position:absolute;inset:0;background:inherit;opacity:0.05;pointer-events:none}.login-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:1.5rem}.login-header h2{font-size:1.25rem;font-weight:700;margin-bottom:0.25rem}.login-hint{font-size:0.875rem;color:var(--color-muted)}.register-link{color:var(--color-yellow);text-decoration:none;font-weight:500;font-size:0.9rem;margin-left:0.5rem;white-space:nowrap}.register-link:hover{text-decoration:underline}.form-group{margin-bottom:1rem}.input-wrapper{position:relative}.form-input{width:100%;padding:0.875rem 1rem;border:1px solid var(--color-border);border-radius:0.5rem;font-family:inherit;font-size:1rem;transition:var(--transition)}.form-input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px rgba(25,60,118,0.1)}.form-input:disabled{background:rgba(0,0,0,0.03);cursor:not-allowed}.input-hint{font-size:0.75rem;color:var(--color-muted);margin-top:0.25rem}.edit-icon,.toggle-password{position:absolute;right:0.75rem;top:50%;transform:translateY(-50%);background:none;border:none;color:var(--color-muted);cursor:pointer;padding:0.25rem;transition:var(--transition)}.edit-icon:hover,.toggle-password:hover{color:var(--color-primary)}.btn-next{width:100%;padding:0.875rem 1.5rem;background:linear-gradient(180deg,#e9eef7,#dee7f3);color:rgba(0,0,0,0.45);border:none;border-radius:0.75rem;font-weight:700;font-size:1rem;cursor:pointer;transition:var(--transition);margin-bottom:1rem}.btn-next:disabled{opacity:0.5;cursor:not-allowed}.btn-next:not(:disabled):hover{background:linear-gradient(180deg,#dee7f3,#d5dfe9)}.btn-login{width:100%;padding:0.875rem 1.5rem;background:var(--gradient-primary);color:white;border:none;border-radius:0.75rem;font-weight:700;font-size:1rem;cursor:pointer;transition:var(--transition);margin-bottom:1rem}.btn-login:hover{opacity:0.9;transform:translateY(-1px)}.forgot-password{text-align:right;margin-bottom:1rem}.forgot-password a{color:var(--color-yellow);text-decoration:none;font-size:0.875rem}.forgot-password a:hover{text-decoration:underline}.separator{display:flex;align-items:center;gap:0.75rem;margin:1.5rem 0;color:var(--color-muted);font-size:0.875rem}.separator::before,.separator::after{content:'';flex:1;height:1px;background:var(--color-border)}.separator span{transition:var(--transition)}.separator:hover span{color:var(--color-primary)}.google-btn{width:100%;display:flex;align-items:center;justify-content:center;gap:0.75rem;padding:0.75rem 1rem;border:1px solid var(--color-border);border-radius:0.5rem;background:white;font-weight:600;cursor:pointer;transition:var(--transition)}.google-btn:hover{background:rgba(0,0,0,0.02)}.google-icon{width:2rem;height:2rem;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,0.03);border-radius:0.375rem}.google-icon img{width:1.25rem;height:1.25rem}.google-text span{transition:color 0.3s ease}.google-btn:hover .google-text span:nth-child(1){color:#4285f4}.google-btn:hover .google-text span:nth-child(2){color:#ea4335}.google-btn:hover .google-text span:nth-child(3){color:#fbbc05}.google-btn:hover .google-text span:nth-child(4){color:#4285f4}.google-btn:hover .google-text span:nth-child(5){color:#34a853}.google-btn:hover .google-text span:nth-child(6){color:#ea4335}.card-decor{position:absolute;left:50%;transform:translateX(-50%);bottom:-1.75rem;width:16rem;height:2.5rem;background:radial-gradient(closest-side,rgba(0,0,0,0.06),rgba(0,0,0,0.01));filter:blur(12px);border-radius:50%;z-index:-1}.skeleton-loader{animation:fadeIn 0.3s ease-out}.skeleton-main,.skeleton-thumb,.skeleton-image,.skeleton-line,.skeleton-input{background:linear-gradient(90deg,#f0f0f0 25%,#e0e0e0 50%,#f0f0f0 75%);background-size:200% 100%;animation:shimmer 2s infinite;border-radius:0.75rem}.skeleton-main{aspect-ratio:1;margin-bottom:1rem}.skeleton-thumbnails{display:grid;grid-template-columns:repeat(5,1fr);gap:0.5rem}.skeleton-thumb{aspect-ratio:1}.skeleton-image{width:100%;height:70vh}.skeleton-line{height:2rem;margin-bottom:0.5rem}.skeleton-line.short{width:75%;height:1rem;margin-bottom:1.5rem}.skeleton-input{height:3rem;margin-bottom:1rem}@keyframes fadeIn{from{opacity:0}to{opacity:1}}@keyframes scaleIn{from{opacity:0;transform:scale(0.95)}to{opacity:1;transform:scale(1)}}@keyframes shimmer{0%{background-position:-200% 0}100%{background-position:200% 0}}.fade-in{animation:fadeIn 0.5s ease-out}.slide-up{animation:slideUp 0.6s ease-out}@keyframes slideUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@media (max-width:1024px){.popup-container{max-width:95%}.main-image{max-height:350px}}@media (max-width:768px){.header h1{font-size:2.5rem}.subtitle{font-size:1rem}.button-grid{grid-template-columns:1fr;gap:1rem}.popup-overlay{padding:0.5rem}.popup-container{border-radius:1rem;max-height:95vh}.popup-content{padding:1.5rem}.close-btn{top:0.75rem;right:0.75rem;width:2rem;height:2rem}.close-btn svg{width:16px;height:16px}.product-content{gap:1.5rem}.main-image{max-height:300px;border-width:2px}.thumbnails{grid-template-columns:repeat(auto-fill,minmax(50px,1fr));gap:0.375rem}.product-details h2{font-size:1.25rem}.login-header{flex-direction:column;gap:0.5rem}.login-header h2{font-size:1.125rem}.register-link{margin-left:0}.form-input{font-size:0.9375rem;padding:0.75rem 0.875rem}}@media (max-width:600px){.container{padding:2rem 0.75rem}.header h1{font-size:2rem}.demo-card{padding:1.5rem}.card-icon{width:3rem;height:3rem}.popup-overlay{padding:0.25rem;align-items:flex-start;padding-top:1rem}.popup-container{margin:auto 0}.popup-content{padding:1.25rem}.close-btn{top:0.5rem;right:0.5rem}.main-image{max-height:250px}.main-image:hover img{transform:none}.thumbnails{grid-template-columns:repeat(4,1fr)}.thumbnail:hover{transform:none}.product-details h2{font-size:1.125rem}.product-features{font-size:0.875rem}.add-to-cart-btn{padding:0.875rem 1.25rem;font-size:0.9375rem}.image-title{font-size:1.25rem}.image-wrapper img{max-height:60vh}.image-wrapper:hover img{transform:none}.login-container{max-width:100%}.btn-next,.btn-login{padding:0.75rem 1.25rem;font-size:0.9375rem}.google-btn{padding:0.625rem 0.875rem;font-size:0.9375rem}.google-icon{width:1.75rem;height:1.75rem}.separator{margin:1.25rem 0;font-size:0.8125rem}}@media (max-width:480px){.header h1{font-size:1.75rem}.subtitle{font-size:0.9375rem}.features-grid{grid-template-columns:1fr;gap:1rem}.popup-container{border-radius:0.75rem}.popup-content{padding:1rem}.main-image{max-height:220px;border-radius:0.5rem}.thumbnails{grid-template-columns:repeat(3,1fr);margin-top:0.75rem}.thumbnail{border-radius:0.375rem}.skeleton-thumbnails{grid-template-columns:repeat(3,1fr)}.login-header h2{font-size:1rem}.login-hint{font-size:0.8125rem}.form-input{padding:0.625rem 0.75rem;font-size:0.875rem}.input-hint{font-size:0.6875rem}.card-decor{width:12rem;height:2rem}}@media (max-width:360px){.header h1{font-size:1.5rem}.popup-overlay{padding:0}.popup-container{border-radius:0;max-height:100vh}.close-btn{width:1.75rem;height:1.75rem}.main-image{max-height:200px}.thumbnails{grid-template-columns:repeat(3,1fr);gap:0.25rem}.product-details h2{font-size:1rem}.login-container{border-radius:0}}@media (max-height:600px) and (orientation:landscape){.popup-overlay{align-items:flex-start;padding:0.5rem}.popup-container{margin:0 auto;max-height:95vh}.popup-content{padding:1rem}.main-image{max-height:200px}.product-content{gap:1rem}.skeleton-main{max-height:200px}}