:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}:root{--primary-color: #ff6b35;--secondary-color: #f7931e;--accent-color: #4a90e2;--success-color: #27ae60;--error-color: 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768px){.hero-content{gap:2rem;text-align:center}.hero-stats{flex-direction:column;gap:1rem;justify-content:center}.hero-cta{flex-direction:column;align-items:center;justify-content:center}.steps-container{flex-direction:column;gap:2rem;align-items:center}.step-arrow{transform:rotate(90deg);margin-top:0}.progress-indicator{padding:1rem}.header-content{flex-direction:column;gap:1rem}.header-text{margin:0}.section-title{font-size:2rem}.features-grid,.testimonials-grid{grid-template-columns:1fr}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:linear-gradient(135deg,var(--bg-primary) 0%,var(--bg-secondary) 100%);color:var(--text-primary);line-height:1.6;min-height:100vh}.app{min-height:100vh;display:flex;flex-direction:column}.app-header{text-align:center;padding:2rem 1rem;background:linear-gradient(135deg,var(--bg-secondary),var(--bg-tertiary));border-bottom:1px solid 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rgba(255,255,255,.1);box-shadow:var(--shadow-md);position:relative;transition:var(--transition)}.step-section:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.step-number{position:absolute;top:-15px;left:2rem;background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));color:#fff;width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1rem;box-shadow:var(--shadow-sm)}.image-upload-container h3{color:var(--text-primary);margin-bottom:1.5rem;font-size:1.5rem;font-weight:600}.upload-area{border:2px dashed rgba(255,255,255,.3);border-radius:var(--border-radius);padding:3rem 2rem;text-align:center;cursor:pointer;transition:var(--transition);background:#ffffff05}.upload-area:hover,.upload-area.drag-over{border-color:var(--primary-color);background:#ff6b351a;transform:scale(1.02)}.upload-placeholder .upload-icon{font-size:3rem;margin-bottom:1rem}.upload-placeholder p{color:var(--text-secondary);margin-bottom:.5rem}.upload-hint{color:var(--text-muted);font-size:.9rem}.image-preview{display:flex;flex-direction:column;align-items:center;gap:1rem}.image-preview img{max-width:200px;max-height:200px;border-radius:var(--border-radius);box-shadow:var(--shadow-md);object-fit:cover}.remove-image{background:var(--error-color);color:#fff;border:none;padding:.5rem 1rem;border-radius:var(--border-radius);cursor:pointer;transition:var(--transition)}.remove-image:hover{background:#c0392b}.thumbnail-prompt-container h3{color:var(--text-primary);margin-bottom:1.5rem;font-size:1.5rem;font-weight:600}.prompt-input-container{position:relative;margin-bottom:2rem}.prompt-textarea{width:100%;background:var(--bg-tertiary);border:1px solid rgba(255,255,255,.2);border-radius:var(--border-radius);padding:1rem;color:var(--text-primary);font-size:1rem;font-family:inherit;resize:vertical;min-height:120px;transition:var(--transition)}.prompt-textarea:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #ff6b351a}.char-counter{position:absolute;bottom:-25px;right:0;color:var(--text-muted);font-size:.8rem}.prompt-examples h4{color:var(--text-secondary);margin-bottom:1rem;font-size:1.1rem}.examples-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1rem;margin-bottom:2rem}.example-prompt{background:var(--bg-tertiary);border:1px solid rgba(255,255,255,.1);border-radius:var(--border-radius);padding:.75rem 1rem;color:var(--text-secondary);font-size:.9rem;cursor:pointer;transition:var(--transition);text-align:left}.example-prompt:hover{border-color:var(--primary-color);color:var(--text-primary);transform:translateY(-2px)}.prompt-tips{background:#4a90e21a;border:1px solid rgba(74,144,226,.3);border-radius:var(--border-radius);padding:1.5rem}.prompt-tips h4{color:var(--accent-color);margin-bottom:1rem}.prompt-tips ul{list-style:none;padding-left:0}.prompt-tips li{color:var(--text-secondary);margin-bottom:.5rem;padding-left:1.5rem;position:relative}.prompt-tips li:before{content:"•";color:var(--accent-color);position:absolute;left:0}.thumbnail-generator h3{color:var(--text-primary);margin-bottom:1.5rem;font-size:1.5rem;font-weight:600}.generation-summary{background:var(--bg-tertiary);border-radius:var(--border-radius);padding:1.5rem;margin-bottom:1.5rem}.summary-item{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.summary-item:last-child{margin-bottom:0}.summary-item .label{color:var(--text-secondary);font-weight:500}.status.ready{color:var(--success-color);font-weight:600}.status.missing{color:var(--error-color);font-weight:600}.generate-button{width:100%;background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));color:#fff;border:none;padding:1rem 2rem;border-radius:var(--border-radius);font-size:1.1rem;font-weight:600;cursor:pointer;transition:var(--transition);display:flex;align-items:center;justify-content:center;gap:.5rem;margin-bottom:1rem}.generate-button:not(.disabled):hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.generate-button.disabled{background:#555;cursor:not-allowed;opacity:.6}.generate-button.generating{background:var(--accent-color)}.spinner{width:20px;height:20px;border:2px solid transparent;border-top:2px solid white;border-radius:50%;animation:spin 1s linear infinite}.generation-progress{text-align:center;padding:1rem;background:#4a90e21a;border-radius:var(--border-radius);border:1px solid rgba(74,144,226,.3)}.progress-text{color:var(--accent-color);font-weight:600;margin-bottom:.5rem}.progress-subtext{color:var(--text-muted);font-size:.9rem}.requirements-hint{background:#e74c3c1a;border:1px solid rgba(231,76,60,.3);border-radius:var(--border-radius);padding:1rem;color:var(--error-color)}.requirements-hint p{margin-bottom:.5rem}.requirements-hint p:last-child{margin-bottom:0}.error-message{background:#e74c3c1a;border:1px solid var(--error-color);border-radius:var(--border-radius);padding:1rem;margin-bottom:1rem;color:var(--error-color)}.results-container{animation:slideIn .5s ease-out}@keyframes slideIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.results-container h3{color:var(--text-primary);margin-bottom:1.5rem;font-size:1.5rem;font-weight:600}.success-result{border-left:4px solid var(--success-color)}.error-result{border-left:4px solid var(--error-color)}.error-content{text-align:center;padding:2rem;background:#e74c3c1a;border-radius:var(--border-radius);margin-bottom:1.5rem}.error-icon{font-size:3rem;margin-bottom:1rem}.error-suggestions{background:var(--bg-tertiary);border-radius:var(--border-radius);padding:1.5rem}.error-suggestions h4{color:var(--warning-color);margin-bottom:1rem}.error-suggestions ul{list-style:none;padding-left:0}.error-suggestions li{color:var(--text-secondary);margin-bottom:.5rem;padding-left:1.5rem;position:relative}.error-suggestions li:before{content:"💡";position:absolute;left:0}.result-content{background:var(--bg-tertiary);border-radius:var(--border-radius);padding:1.5rem;margin-bottom:1.5rem}.image-result h4,.text-result h4{color:var(--success-color);margin-bottom:1rem}.generated-image{margin-bottom:1.5rem;text-align:center}.generated-image img{max-width:100%;height:auto;border-radius:var(--border-radius);box-shadow:var(--shadow-lg);border:2px solid rgba(255,255,255,.1)}.image-actions,.result-actions{display:flex;gap:1rem;margin-bottom:1rem;flex-wrap:wrap}.generated-content{background:#ffffff0d;border-radius:var(--border-radius);padding:1.5rem;color:var(--text-primary);line-height:1.8;white-space:pre-wrap;margin-bottom:1.5rem;border:1px solid rgba(255,255,255,.1)}.action-button{background:var(--accent-color);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:var(--border-radius);font-size:1rem;font-weight:500;cursor:pointer;transition:var(--transition);display:flex;align-items:center;gap:.5rem}.action-button:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.download-button{background:var(--primary-color)}.download-button:hover{background:#e55a2e}.image-actions{display:flex;justify-content:center;margin-bottom:1rem}.download-button-large{padding:1rem 2rem;font-size:1.2rem;min-width:200px;font-weight:600}.copy-button:hover{background:#357abd}.save-button{background:var(--success-color)}.save-button:hover{background:#219a52}.result-info{color:var(--text-muted);font-size:.9rem}.download-error{background:#e74c3c1a;color:var(--error-color);padding:.75rem;border-radius:var(--border-radius);margin-bottom:1rem;border:1px solid rgba(231,76,60,.3)}.next-steps,.recommended-tools,.quota-info{background:var(--bg-tertiary);border-radius:var(--border-radius);padding:1.5rem;margin-bottom:1.5rem}.next-steps h4,.recommended-tools h4,.quota-info h4{color:var(--accent-color);margin-bottom:1rem}.next-steps ol{color:var(--text-secondary);padding-left:1.5rem}.next-steps li{margin-bottom:.75rem;line-height:1.6}.next-steps ul{margin:.5rem 0;padding-left:1rem}.next-steps ul li{margin-bottom:.25rem}.quota-info{background:#ffc1071a;border:1px solid rgba(255,193,7,.3)}.quota-info h4{color:var(--warning-color)}.quota-details p{color:var(--text-secondary);margin-bottom:.75rem;line-height:1.6}.quota-details p:last-child{margin-bottom:0}.quota-details strong{color:var(--text-primary)}.tools-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem}.tool-item{background:#ffffff0d;border-radius:var(--border-radius);padding:1rem;border:1px solid rgba(255,255,255,.1);transition:var(--transition)}.tool-item:hover{transform:translateY(-2px);border-color:var(--accent-color)}.tool-item strong{color:var(--text-primary);display:block;margin-bottom:.5rem}.tool-item p{color:var(--text-muted);font-size:.9rem;margin:0}.app-footer{text-align:center;padding:2rem 1rem;background:var(--bg-secondary);border-top:1px solid rgba(255,255,255,.1);color:var(--text-muted)}@media (max-width: 768px){.app-header h1{font-size:2rem}.app-header p{font-size:1rem}.step-section{padding:1.5rem}.examples-grid{grid-template-columns:1fr}.result-actions{flex-direction:column}.action-button{justify-content:center}.tools-grid{grid-template-columns:1fr}}@media (max-width: 480px){.app-main{padding:1rem .5rem}.step-section{padding:1rem}.upload-area{padding:2rem 1rem}}.auth-modal-overlay{position:fixed;inset:0;background:#000c;display:flex;align-items:center;justify-content:center;z-index:1000;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}.auth-modal{background:var(--bg-card);border-radius:var(--border-radius-lg);padding:2rem;max-width:500px;width:90%;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow-xl);border:1px solid rgba(255,255,255,.1);position:relative}.modal-close{position:absolute;top:1rem;right:1rem;background:transparent;border:none;color:var(--text-secondary);font-size:1.5rem;cursor:pointer;padding:.5rem;border-radius:50%;transition:var(--transition)}.modal-close:hover{background:#ffffff1a;color:var(--text-primary)}.modal-content{text-align:center}.modal-icon{font-size:3rem;margin-bottom:1rem}.modal-content h2{margin-bottom:1rem;color:var(--text-primary);font-size:1.5rem}.modal-content p{margin-bottom:2rem;color:var(--text-secondary);line-height:1.6}.modal-auth-buttons{margin-bottom:2rem}.modal-auth-btn{width:100%}.modal-benefits h3{margin-bottom:1rem;color:var(--text-primary);font-size:1.1rem}.modal-benefits ul{list-style:none;text-align:left;margin:0 auto;display:inline-block}.modal-benefits li{padding:.5rem 0;color:var(--text-secondary);display:flex;align-items:center;gap:.5rem}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.loading-spinner{border:3px solid rgba(102,126,234,.3);border-top:3px solid #667eea;border-radius:50%;width:30px;height:30px;animation:spin 1s linear infinite}