:root{--accent: #2563eb;--accent-hover: #1d4ed8;--accent-muted: #dbeafe;--green: #16a34a;--amber: #d97706;--red: #dc2626;--surface: #ffffff;--surface-2: #f1f5f9;--border: #e2e8f0;--text: #0f172a;--text-muted: #64748b;--radius: 8px;--shadow-sm: 0 1px 3px rgba(0,0,0,.08);--shadow: 0 4px 12px rgba(0,0,0,.1)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px}body{font-family:Inter,system-ui,sans-serif;background:var(--surface-2);color:var(--text);min-height:100dvh}button{cursor:pointer;font-family:inherit}input,select{font-family:inherit}a{color:inherit}.app-shell{display:flex;flex-direction:row;min-height:100dvh}.app-sidebar{width:200px;flex-shrink:0;background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;gap:28px;padding:24px 20px 28px;position:sticky;top:0;height:100dvh;overflow-y:auto;z-index:100}.sidebar-hint{font-size:12px;color:var(--text-muted);line-height:1.5;padding-top:4px;border-top:1px solid var(--border)}.app-header{display:none}.app-header-inner{max-width:960px;margin:0 auto;padding:12px 24px;display:flex;align-items:center;gap:32px}.app-logo{font-size:18px;font-weight:700;letter-spacing:-.5px;color:var(--accent);white-space:nowrap;background:none;border:none;padding:0;cursor:pointer}.app-main{flex:1;min-width:0;padding:32px 28px}.step-indicator{display:flex;align-items:center;gap:0;overflow:hidden}.step{display:flex;align-items:center;gap:6px;position:relative}.step-row{display:flex;align-items:center;gap:6px}.step-num{width:22px;height:22px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:600;background:var(--surface-2);border:1.5px solid var(--border);color:var(--text-muted);flex-shrink:0}.step-label{font-size:12px;font-weight:500;color:var(--text-muted);white-space:nowrap}.step-line{display:block;width:24px;height:1px;background:var(--border);margin:0 8px;flex-shrink:0}.step--done .step-num{background:var(--accent-muted);border-color:var(--accent);color:var(--accent);font-size:10px}.step--active .step-num{background:var(--accent);border-color:var(--accent);color:#fff}.step--active .step-label{color:var(--accent);font-weight:600}.step-indicator--vertical{flex-direction:column;align-items:flex-start;gap:0;overflow:visible}.step-indicator--vertical .step{flex-direction:column;align-items:flex-start;gap:0;width:100%}.step-indicator--vertical .step-row{padding:6px 0}.step-indicator--vertical .step-label{font-size:13px;white-space:normal;line-height:1.3}.step-indicator--vertical .step--active .step-label{color:var(--accent);font-weight:600}.step-vline{display:block;width:1.5px;height:14px;background:var(--border);margin-left:10px;flex-shrink:0}.step-indicator--vertical .step--done .step-vline{background:var(--accent);opacity:.4}.page{max-width:720px}.page--wide{max-width:900px}.page--centered{display:flex;justify-content:center}.page-header{margin-bottom:24px}.page-header h2{font-size:22px;font-weight:700;margin-bottom:4px}.subtitle{color:var(--text-muted);font-size:14px}.page-actions{display:flex;gap:12px;margin-top:32px;align-items:center}.btn{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;border-radius:var(--radius);font-size:14px;font-weight:600;border:1.5px solid transparent;transition:background .15s,border-color .15s,opacity .15s;white-space:nowrap}.btn--primary{background:var(--accent);color:#fff}.btn--primary:hover:not(:disabled){background:var(--accent-hover)}.btn--ghost{background:var(--surface);color:var(--text);border-color:var(--border)}.btn--ghost:hover:not(:disabled){background:var(--surface-2)}.btn--danger{background:#fee2e2;color:var(--red);border-color:#fca5a5}.btn--danger:hover:not(:disabled){background:#fecaca}.btn--sm{padding:6px 12px;font-size:13px}.btn:disabled{opacity:.45;cursor:not-allowed}.btn-icon{background:none;border:none;font-size:18px;line-height:1;color:var(--text-muted);padding:2px 6px;border-radius:4px}.btn-icon:hover{background:var(--surface-2)}.upload-zone{border:2px dashed var(--border);border-radius:var(--radius);background:var(--surface);padding:48px 24px;text-align:center;cursor:pointer;transition:border-color .2s,background .2s;color:var(--text-muted);margin-bottom:24px;-webkit-user-select:none;user-select:none}.upload-zone:hover:not(.upload-zone--busy),.upload-zone--dragging{border-color:var(--accent);background:var(--accent-muted);color:var(--accent)}.upload-zone--busy{cursor:default}.upload-zone-inner{display:flex;flex-direction:column;align-items:center;gap:12px}.upload-zone p{font-size:15px;font-weight:500}.image-grid{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:8px}.image-card-wrap{display:flex;flex-direction:column;gap:5px;width:120px;flex-shrink:0}.image-card-label{font-size:10px;color:var(--text-muted);line-height:1.4;text-align:center;word-break:break-word}.image-card{position:relative;width:120px;height:120px;border-radius:var(--radius);overflow:hidden;background:var(--surface-2);box-shadow:var(--shadow-sm);flex-shrink:0}.image-card img{width:100%;height:100%;object-fit:cover;display:block}.image-card-remove{position:absolute;top:4px;right:4px;background:#0000008c;color:#fff;border:none;border-radius:50%;width:22px;height:22px;font-size:14px;line-height:1;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .15s}.image-card:hover .image-card-remove{opacity:1}.quality-badge{position:absolute;bottom:4px;left:4px;padding:2px 6px;border-radius:4px;font-size:10px;font-weight:700;color:#fff}.template-grid{display:flex;flex-wrap:wrap;gap:16px}.template-card{background:var(--surface);border:2px solid var(--border);border-radius:var(--radius);padding:16px;display:flex;flex-direction:column;align-items:center;gap:12px;cursor:pointer;transition:border-color .2s,box-shadow .2s}.template-card:hover:not(:disabled){border-color:var(--accent);box-shadow:var(--shadow)}.template-card--disabled{opacity:.45;cursor:not-allowed}.template-preview{background:var(--surface-2);border-radius:4px;overflow:hidden}.template-card-info{display:flex;flex-direction:column;align-items:center;gap:2px;text-align:center}.template-card-info strong{font-size:14px}.template-card-info span{font-size:12px;color:var(--text-muted)}.template-unavail{color:var(--amber);font-size:11px;font-weight:600}.builder-header{display:flex;align-items:center;justify-content:space-between;gap:16px}.builder-header-actions{display:flex;gap:8px;flex-shrink:0}.builder-layout{display:flex;flex-direction:column;gap:16px}.builder-sidebar-top{display:flex;align-items:center;gap:12px}.builder-main{display:flex;gap:16px;align-items:flex-start}.builder-hint{font-size:12px;color:var(--text-muted)}.collage-canvas{border:1px solid var(--border);border-radius:4px;background:#fff;box-shadow:var(--shadow-sm);flex-shrink:0;overflow:hidden}.image-editor{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px;width:220px;flex-shrink:0;box-shadow:var(--shadow-sm)}.image-editor-header{display:flex;align-items:center;justify-content:space-between;font-weight:600;font-size:14px;margin-bottom:12px}.image-editor-thumb{border-radius:4px;overflow:hidden;margin-bottom:12px;background:var(--surface-2)}.image-editor-thumb img{width:100%;height:auto;display:block}.image-editor-section{margin-bottom:12px}.editor-label{display:block;font-size:12px;font-weight:600;color:var(--text-muted);margin-bottom:6px;text-transform:uppercase;letter-spacing:.04em}.editor-row{display:flex;gap:8px}.editor-hint{font-size:13px;color:var(--text-muted);margin-bottom:10px}.zoom-slider{width:100%;accent-color:var(--accent)}.zoom-value{font-size:12px;color:var(--text-muted)}.editor-image-picker{display:flex;flex-wrap:wrap;gap:6px}.picker-thumb{width:56px;height:56px;border:2px solid var(--border);border-radius:4px;overflow:hidden;padding:0;background:var(--surface-2);transition:border-color .15s}.picker-thumb:hover{border-color:var(--accent)}.picker-thumb img{width:100%;height:100%;object-fit:cover;display:block}.select{padding:8px 12px;border:1.5px solid var(--border);border-radius:var(--radius);background:var(--surface);font-size:14px;color:var(--text);-webkit-appearance:auto;-moz-appearance:auto;appearance:auto}.select:focus{outline:2px solid var(--accent);outline-offset:1px}.preview-frame{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;display:flex;justify-content:center;min-height:300px;align-items:center;box-shadow:var(--shadow-sm)}.preview-loading{display:flex;flex-direction:column;align-items:center;gap:12px;color:var(--text-muted)}.preview-image{max-width:100%;max-height:600px;border-radius:2px;box-shadow:var(--shadow)}.quality-warnings{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}.quality-alert{padding:10px 14px;border-radius:var(--radius);font-size:13px;line-height:1.4}.quality-alert--warn{background:#fef3c7;color:#92400e}.quality-alert--poor{background:#fee2e2;color:#991b1b}.checkout-form{max-width:480px}.form-section{margin-bottom:28px}.form-section-title{font-size:15px;font-weight:700;margin-bottom:16px;padding-bottom:8px;border-bottom:1px solid var(--border)}.form-field{margin-bottom:14px}.form-label{display:block;font-size:13px;font-weight:600;color:var(--text-muted);margin-bottom:5px}.form-input{width:100%;padding:9px 12px;border:1.5px solid var(--border);border-radius:var(--radius);font-size:15px;transition:border-color .15s;background:var(--surface);color:var(--text)}.form-input:focus{outline:none;border-color:var(--accent)}.form-row{display:flex;gap:12px}.form-row .form-field:last-child{flex:1}.required{color:var(--red)}.confirmation-box{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:48px 40px;text-align:center;max-width:420px;box-shadow:var(--shadow)}.confirmation-icon{width:64px;height:64px;border-radius:50%;background:#dcfce7;color:var(--green);font-size:32px;display:flex;align-items:center;justify-content:center;margin:0 auto 20px}.confirmation-box h2{font-size:22px;margin-bottom:10px}.confirmation-text{color:var(--text-muted);margin-bottom:24px}.confirmation-id{background:var(--surface-2);border-radius:var(--radius);padding:12px 16px;margin-bottom:16px;display:flex;flex-direction:column;gap:4px}.confirmation-id-label{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted)}.confirmation-id-value{font-size:14px;font-family:Courier New,monospace;color:var(--text);word-break:break-all}.confirmation-hint{font-size:13px;color:var(--text-muted);margin-bottom:24px}.spinner{width:32px;height:32px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite}.spinner--sm{width:16px;height:16px;border-width:2px}@keyframes spin{to{transform:rotate(360deg)}}.error-msg{background:#fee2e2;color:var(--red);border-radius:var(--radius);padding:10px 14px;font-size:14px;margin-bottom:16px}.badge{display:inline-flex;align-items:center;padding:2px 7px;border-radius:4px;font-size:11px;font-weight:600;background:var(--surface-2);color:var(--text-muted);border:1px solid var(--border);white-space:nowrap}.badge--orient{background:var(--accent-muted);color:var(--accent);border-color:transparent}.pages-list{display:flex;flex-direction:column;gap:12px;margin-bottom:16px}.page-card{background:var(--surface);border:1.5px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:border-color .15s}.page-card--expanded{border-color:var(--accent)}.page-card-inner{display:flex;gap:16px;padding:14px 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.15s}.orientation-tab--active{background:var(--accent);color:#fff}.orientation-tab:not(.orientation-tab--active):hover{background:var(--surface)}.picker-grid{display:flex;flex-wrap:wrap;gap:8px}.picker-card{display:flex;flex-direction:column;align-items:center;gap:4px;padding:8px;background:var(--surface);border:2px solid var(--border);border-radius:var(--radius);cursor:pointer;transition:border-color .15s;min-width:84px}.picker-card:hover:not(:disabled){border-color:var(--accent)}.picker-card--active{border-color:var(--accent);background:var(--accent-muted)}.picker-card--dim{opacity:.4;cursor:not-allowed}.picker-card-name{font-size:11px;font-weight:600;color:var(--text);text-align:center;line-height:1.2}.picker-card-count{font-size:10px;color:var(--text-muted)}.page-strip{display:flex;gap:6px;margin-bottom:14px;flex-wrap:wrap}.page-strip-btn{width:32px;height:32px;border-radius:50%;font-size:13px;font-weight:600;border:2px solid var(--border);background:var(--surface);color:var(--text-muted);cursor:pointer;transition:all .15s;display:flex;align-items:center;justify-content:center}.page-strip-btn--active{background:var(--accent);border-color:var(--accent);color:#fff}.page-strip-btn:not(.page-strip-btn--active):hover{border-color:var(--accent);color:var(--accent)}.preview-pages{display:flex;flex-direction:column;gap:28px}.preview-page-label{font-size:13px;font-weight:600;color:var(--text-muted);margin-bottom:10px;display:flex;align-items:center}.order-summary{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:24px;overflow:hidden}.order-summary-row{display:flex;align-items:center;gap:12px;padding:10px 14px;font-size:14px;border-bottom:1px solid var(--border)}.order-summary-row:last-child{border-bottom:none}.order-summary-num{font-weight:700;color:var(--text-muted);font-size:12px;min-width:60px}.photo-picker-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:10px;margin-bottom:24px}.photo-picker-wrap{display:flex;flex-direction:column;gap:5px}.photo-picker-item{position:relative;aspect-ratio:1;border:3px solid transparent;border-radius:var(--radius);overflow:hidden;background:var(--surface-2);padding:0;cursor:pointer;transition:border-color .15s}.photo-picker-item img{width:100%;height:100%;object-fit:cover;display:block}.photo-picker-item--selected{border-color:var(--accent)}.photo-picker-check{position:absolute;top:6px;right:6px;width:24px;height:24px;border-radius:50%;background:var(--accent);color:#fff;font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;box-shadow:0 1px 4px #0000004d;pointer-events:none}.layout-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-bottom:24px;max-width:480px}.layout-option{display:flex;flex-direction:column;align-items:center;gap:8px;background:none;border:none;padding:8px;cursor:pointer;transition:opacity .15s}.layout-option:hover{opacity:.8}.layout-option-name{font-size:12px;font-weight:600;color:var(--text-muted);text-align:center}.print-paper{padding:14px;background:#fff;box-shadow:0 2px 10px #0000002e}.mini-collage{position:relative;width:140px;height:210px;background:var(--surface-2);border-radius:2px;overflow:hidden;flex-shrink:0}.collage-preview-wrap{width:100%;border-radius:var(--radius);overflow:hidden;margin-bottom:24px;background:var(--surface-2);box-shadow:var(--shadow)}.collage-preview-img{width:100%;background-size:cover;background-position:center;display:block}.collage-preview-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;aspect-ratio:2 / 3;color:var(--text-muted)}.save-loading{display:flex;flex-direction:column;align-items:center;gap:14px;padding:48px 0;color:var(--text-muted)}.save-image-wrap{display:flex;align-items:flex-start}.save-image{display:block;max-width:100%;max-height:calc(100dvh - 152px);width:auto;height:auto;border-radius:var(--radius);box-shadow:var(--shadow);-webkit-touch-callout:default}.save-image-wrap--landscape .save-image{max-width:min(100%,calc((100dvh - 152px)*1.5))}.save-success{display:flex;flex-direction:column;align-items:center;gap:14px;padding:32px 16px;text-align:center}.save-success-icon{width:56px;height:56px;border-radius:50%;background:#dcfce7;color:var(--green);font-size:26px;font-weight:700;display:flex;align-items:center;justify-content:center}.save-success p{font-size:18px;font-weight:700;color:var(--text)}@media (max-width: 767px){.app-shell{flex-direction:column}.app-sidebar{display:none}.app-header{display:block;background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}.app-header-inner{gap:12px}.step-label{display:none}.app-main{padding:20px 16px}.builder-main{flex-direction:column}.image-editor{width:100%}.page-card-inner{flex-direction:column}}@media (orientation: landscape) and (min-width: 768px) and (max-height: 1024px){.app-main{padding:16px 24px 20px}.page-header{margin-bottom:10px}.page-header h2{font-size:18px;margin-bottom:2px}.page-actions{margin-top:12px}.builder-hint{display:none}.builder-main{gap:12px}.image-editor{width:190px}.photo-picker-grid{grid-template-columns:repeat(auto-fill,minmax(110px,1fr))}.layout-grid{grid-template-columns:repeat(3,1fr);max-width:none;gap:12px}.upload-zone{padding:28px 24px;margin-bottom:16px}.app-sidebar{padding:16px 16px 20px;gap:20px;width:188px}.save-image{max-height:calc(100dvh - 88px)}.save-image-wrap--landscape .save-image{max-width:min(100%,calc((100dvh - 88px)*1.5))}}.image-editor--drawer{position:fixed;bottom:0;left:0;right:0;width:100%!important;max-height:36dvh;overflow-y:auto;border-radius:var(--radius) var(--radius) 0 0;border:none;border-top:1px solid var(--border);box-shadow:0 -4px 20px #0000001f;z-index:200;padding:10px 20px 14px}.image-editor--drawer .image-editor-thumb{display:none}.image-editor--drawer .image-editor-body{display:flex;flex-direction:row;gap:20px;align-items:flex-start;flex-wrap:wrap}.image-editor--drawer .image-editor-section{margin-bottom:0;min-width:110px}.image-editor--drawer .editor-image-picker{display:grid;grid-template-columns:repeat(auto-fill,minmax(64px,1fr));gap:8px}.image-editor--drawer .picker-thumb{width:100%;height:auto;aspect-ratio:1}.image-editor-done{display:none}.image-editor--drawer .image-editor-done{display:inline-flex}.image-editor--drawer .image-editor-close{display:none}.drawer-scrim{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000059;z-index:199}