:root{--color-primary: #2563EB;--color-primary-hover: #1D4ED8;--color-primary-light: #EFF6FF;--color-success: #16A34A;--color-danger: #DC2626;--color-text-header: #111827;--color-text-body: #374151;--color-text-muted: #6B7280;--color-bg-body: #F9FAFB;--color-bg-container: #FFFFFF;--color-border: #E5E7EB;--font-family-base: "Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";--border-radius: .75rem;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1)}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font-family-base);background-color:var(--color-bg-body);color:var(--color-text-body);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{display:flex;justify-content:center}.app-container{width:100%;max-width:1200px;min-height:100vh;background-color:var(--color-bg-container);padding:clamp(1.5rem,4vw,3rem) clamp(1rem,4vw,3rem);transition:all .3s ease-in-out}.app-header{text-align:center;margin-bottom:3rem}.app-header h1{font-size:clamp(1.75rem,5vw,2.5rem);font-weight:700;color:var(--color-text-header);display:flex;align-items:center;justify-content:center;gap:.75rem;white-space:nowrap}.app-header h1 span{font-weight:800;font-style:italic;color:var(--color-primary)}.header-logo{width:1.2em;height:1.2em;color:var(--color-primary);flex-shrink:0}.app-header p{font-size:clamp(.9rem,2.5vw,1.1rem);color:var(--color-text-muted);margin-top:.5rem;max-width:60ch;margin-left:auto;margin-right:auto}.upload-zone{border:2px dashed var(--color-border);border-radius:var(--border-radius);padding:clamp(2rem,8vw,4rem);text-align:center;background-color:var(--color-bg-body);transition:all .2s ease-in-out;cursor:pointer;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:1rem}.upload-zone:hover,.upload-zone.dragover{border-color:var(--color-primary);background-color:var(--color-primary-light);transform:translateY(-2px);box-shadow:var(--shadow-md)}.upload-hint{color:var(--color-text-muted);font-size:.9rem}.upload-input{display:none}.global-actions{display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;align-items:center;margin-bottom:2rem;padding:1.25rem;background-color:var(--color-bg-body);border-radius:var(--border-radius);border:1px solid var(--color-border)}.global-actions-buttons,.global-actions-apply{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem}.results-list{display:flex;flex-direction:column;gap:1rem}.result-card{display:flex;flex-direction:column;gap:1rem;padding:1rem 1.25rem;background-color:var(--color-bg-container);border:1px solid var(--color-border);border-radius:var(--border-radius);box-shadow:var(--shadow-sm);transition:box-shadow .2s,border-color .2s}.result-card:hover{box-shadow:var(--shadow-md);border-color:#d1d5db}.card-file-info{display:flex;align-items:center;gap:1rem;flex-grow:1;min-width:0}.card-thumbnail{width:60px;height:60px;border-radius:8px;object-fit:cover;flex-shrink:0;background-color:var(--color-border)}.card-details{flex-grow:1;min-width:0;display:flex;flex-direction:column;gap:.25rem}.card-filename{font-weight:600;color:var(--color-text-header);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.card-size-details{display:flex;align-items:center;flex-wrap:wrap;gap:.5rem;font-size:.9rem;color:var(--color-text-muted)}.card-size-new{font-weight:600;color:var(--color-success)}.card-savings{font-size:.8rem;background-color:var(--color-primary-light);color:var(--color-primary);padding:.1rem .5rem;border-radius:999px;font-weight:600}.card-controls{display:flex;flex-direction:column;align-items:stretch;gap:1rem}.card-status-and-actions{display:flex;align-items:center;justify-content:flex-end;gap:.75rem;min-height:36px}.card-status{display:flex;align-items:center;justify-content:center}.card-status svg,.card-status .spinner{width:20px;height:20px}.card-status svg{color:var(--color-danger)}.card-actions{display:flex;align-items:center;gap:.25rem}.card-target-controls{display:flex;align-items:center;flex-wrap:wrap;gap:.75rem;padding:.75rem;background-color:var(--color-bg-body);border-radius:8px}.target-controls-buttons{display:flex;align-items:center;gap:.5rem;margin-left:auto}.target-size-input,.target-unit-select{padding:.5rem .75rem;border:1px solid var(--color-border);border-radius:6px;font-family:inherit;font-size:.9rem;background-color:var(--color-bg-container);transition:border-color .2s,box-shadow .2s}.target-size-input{width:80px}.target-size-input:focus,.target-unit-select:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-light)}.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.6rem 1.25rem;font-size:.95rem;font-weight:600;border-radius:8px;border:1px solid transparent;cursor:pointer;transition:all .2s ease-in-out;text-decoration:none;white-space:nowrap}.btn:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.btn svg{width:20px;height:20px}.btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn:active:not(:disabled){transform:translateY(0);box-shadow:var(--shadow-sm)}.btn:disabled{cursor:not-allowed;opacity:.6}.btn-primary{background-color:var(--color-primary);color:#fff;border-color:var(--color-primary)}.btn-primary:hover:not(:disabled){background-color:var(--color-primary-hover);border-color:var(--color-primary-hover)}.btn-secondary{background-color:var(--color-bg-container);color:var(--color-text-body);border-color:var(--color-border)}.btn-secondary:hover:not(:disabled){background-color:var(--color-bg-body);border-color:#d1d5db}#select-images-btn{padding:.8rem 1.75rem;font-size:1.1rem;border-radius:10px}#select-images-btn svg{width:24px;height:24px}.btn-small{padding:.4rem .8rem;font-size:.875rem;border-radius:6px}.btn-icon{background:none;border:none;cursor:pointer;padding:.5rem;border-radius:50%;display:flex;color:var(--color-text-muted);transition:background-color .2s,color .2s}.btn-icon:hover{background-color:var(--color-bg-body);color:var(--color-text-header)}.btn-icon.remove:hover{background-color:#fef2f2;color:var(--color-danger)}.btn-icon svg{width:20px;height:20px}.btn-link{background:none;border:none;padding:0;font-family:inherit;font-size:.875rem;font-weight:600;color:var(--color-primary);text-decoration:none;cursor:pointer}.btn-link:hover:not(:disabled){text-decoration:underline;color:var(--color-primary-hover)}.btn-link:disabled{color:var(--color-text-muted);cursor:not-allowed}.spinner{width:20px;height:20px;border:3px solid rgba(0,0,0,.2);border-radius:50%;border-top-color:var(--color-primary);animation:spin 1s ease-in-out infinite}.btn .spinner{border:3px solid rgba(255,255,255,.3);border-top-color:#fff}.badge{position:absolute;top:-8px;right:-8px;width:24px;height:24px;border-radius:50%;background-color:var(--color-primary-hover);color:#fff;font-size:.8rem;font-weight:600;display:none;align-items:center;justify-content:center;line-height:1;box-shadow:0 2px 4px #0003;border:2px solid white}@keyframes spin{to{transform:rotate(360deg)}}.app-footer{margin-top:5rem;padding-top:3rem;border-top:1px solid var(--color-border)}.app-footer h2{font-size:clamp(1.5rem,4vw,2.25rem);font-weight:700;color:var(--color-text-header);text-align:center;margin-bottom:.5rem}.app-footer .footer-subtitle{font-size:clamp(1rem,2.5vw,1.1rem);color:var(--color-text-muted);text-align:center;margin-bottom:3rem;max-width:70ch;margin-left:auto;margin-right:auto}.app-footer hr{border:none;border-top:1px solid var(--color-border);margin:3rem 0}.footer-section-title{font-size:clamp(1.25rem,3vw,1.75rem);font-weight:600;color:var(--color-text-header);margin-bottom:1.5rem;display:flex;align-items:center;gap:.75rem}.footer-section-title.faq-title{justify-content:center}.footer-section-title svg{width:1.2em;height:1.2em;color:var(--color-primary);flex-shrink:0}.features-list{list-style:none;display:grid;gap:1.5rem}.features-list li{background-color:var(--color-bg-body);padding:1.5rem;border-radius:var(--border-radius);border:1px solid var(--color-border)}.features-list strong{font-size:1.1rem;font-weight:600;color:var(--color-text-header);display:flex;align-items:center;gap:.75rem;margin-bottom:.5rem}.features-list strong svg{width:24px;height:24px;color:var(--color-primary)}.features-list p{font-size:.95rem;color:var(--color-text-muted)}.steps-list{list-style:none;counter-reset:steps-counter;display:flex;flex-direction:column;gap:1.5rem}.steps-list li{position:relative;padding-left:3.5rem}.steps-list li:before{content:counter(steps-counter);counter-increment:steps-counter;position:absolute;left:0;top:0;width:2.5rem;height:2.5rem;background:var(--color-primary-light);color:var(--color-primary);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.2rem}.steps-list li strong{font-weight:600;color:var(--color-text-header)}.platform-grid{display:grid;gap:1rem}.platform-item{padding:1.5rem;background-color:var(--color-bg-body);border-radius:var(--border-radius);border:1px solid transparent;transition:all .2s ease-in-out}.platform-item:hover{transform:translateY(-2px);border-color:var(--color-border);box-shadow:var(--shadow-md)}.platform-item h5{font-size:1.1rem;font-weight:600;color:var(--color-text-header);margin-bottom:.5rem}.platform-item p{font-size:.95rem;color:var(--color-text-muted)}.faq-list dt{font-weight:600;color:var(--color-text-header);margin-top:1.5rem}.faq-list dd{margin-top:.5rem;margin-left:0;padding-left:1.25rem;border-left:3px solid var(--color-primary);color:var(--color-text-muted)}.footer-text-block{color:var(--color-text-muted);font-size:.95rem}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}@media (min-width: 640px){.result-card{flex-direction:row;align-items:center;justify-content:space-between}.card-controls{flex-direction:row;align-items:center;justify-content:space-between;flex-shrink:0;width:420px;padding:0;background:none}.card-target-controls{padding:0;background:none}.platform-grid{grid-template-columns:repeat(2,1fr);gap:1.5rem}}@media (min-width: 900px){.global-actions{flex-wrap:nowrap}.global-actions-apply{justify-content:flex-end}.features-list{grid-template-columns:repeat(3,1fr)}}@media (max-width: 767px){.global-actions{flex-direction:column;align-items:stretch}.global-actions-buttons,.global-actions-apply{justify-content:center}}