@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap";:root{--primary:#5b6af0;--primary-hover:#4555e8;--primary-light:#eef0ff;--primary-glow:#5b6af040;--background:#f5f6fa;--surface:#fff;--surface-hover:#f0f1f8;--surface-elevated:#fff;--surface-border:#0000000f;--text:#0f0f1a;--text-muted:#6b7280;--text-subtle:#9ca3af;--border:#e5e7eb;--border-focus:var(--primary);--success:#10b981;--success-light:#ecfdf5;--error:#ef4444;--error-light:#fef2f2;--warning:#f59e0b;--radius-sm:8px;--radius:12px;--radius-lg:16px;--radius-xl:24px;--radius-full:9999px;--shadow-sm:0 1px 3px #00000014, 0 1px 2px #0000000d;--shadow:0 4px 16px #00000014, 0 2px 6px #0000000d;--shadow-lg:0 10px 40px #0000001f, 0 4px 16px #0000000f;--shadow-primary:0 4px 20px var(--primary-glow);--transition:.15s cubic-bezier(.4, 0, .2, 1);--transition-slow:.3s cubic-bezier(.4, 0, .2, 1)}[data-theme=dark]{--primary:#6c7ff2;--primary-hover:#7e8df5;--primary-light:#6c7ff21f;--primary-glow:#6c7ff24d;--background:#0d0e1a;--surface:#161728;--surface-hover:#1e2035;--surface-elevated:#1a1b2e;--surface-border:#ffffff12;--text:#f0f1ff;--text-muted:#8b92b8;--text-subtle:#5a6080;--border:#252640;--border-focus:var(--primary);--success:#10b981;--success-light:#10b9811f;--error:#f87171;--error-light:#f871711f;--shadow-sm:0 1px 3px #0000004d;--shadow:0 4px 16px #00000059;--shadow-lg:0 10px 40px #00000080}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{color:var(--text);background:var(--background);-webkit-font-smoothing:antialiased;min-height:100vh;transition:background var(--transition-slow), color var(--transition-slow);font-family:Inter,system-ui,-apple-system,sans-serif;font-size:15px;line-height:1.6;overflow-x:hidden}img{max-width:100%;display:block}button{cursor:pointer;font-family:inherit;font-size:inherit;line-height:inherit;color:inherit;background:0 0;border:none}input,select,textarea{font-family:inherit;font-size:inherit}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.app{flex-direction:column;min-height:100vh;display:flex}.app-body{flex:1;padding-bottom:80px}.container{width:100%;max-width:1140px;margin:0 auto;padding:0 16px}.btn{border-radius:var(--radius);transition:all var(--transition);cursor:pointer;-webkit-user-select:none;user-select:none;white-space:nowrap;border:1px solid #0000;justify-content:center;align-items:center;gap:8px;min-height:44px;padding:10px 20px;font-size:14px;font-weight:600;text-decoration:none;display:inline-flex}.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.btn:disabled{opacity:.45;cursor:not-allowed;pointer-events:none}.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-primary)}.btn-primary:hover:not(:disabled){background:var(--primary-hover);box-shadow:0 6px 24px var(--primary-glow);transform:translateY(-1px)}.btn-primary:active{transform:translateY(0)}.btn-secondary{background:var(--surface);color:var(--text);border-color:var(--border);box-shadow:var(--shadow-sm)}.btn-secondary:hover:not(:disabled){background:var(--surface-hover);border-color:var(--primary);color:var(--primary)}.btn-ghost{color:var(--text-muted);background:0 0;border-color:#0000}.btn-ghost:hover:not(:disabled){background:var(--surface-hover);color:var(--text)}.btn-danger{background:var(--error);color:#fff}.btn-danger:hover:not(:disabled){background:#dc2626}.btn-danger-ghost{color:var(--error)!important}.btn-danger-ghost:hover:not(:disabled){background:var(--error-light)!important;color:var(--error)!important}.btn-lg{border-radius:var(--radius-lg);min-height:52px;padding:14px 28px;font-size:16px}.btn-sm{border-radius:var(--radius-sm);min-height:34px;padding:6px 12px;font-size:13px}.icon-btn{border-radius:var(--radius-sm);background:var(--surface-hover);width:36px;height:36px;color:var(--text-muted);transition:all var(--transition);border:1px solid var(--border);flex-shrink:0;justify-content:center;align-items:center;display:inline-flex}.icon-btn:hover{background:var(--primary-light);color:var(--primary);border-color:var(--primary)}.icon-btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.icon-btn-ghost{background:0 0;border-color:#0000}.icon-btn-ghost:hover{background:var(--surface-hover);color:var(--text);border-color:#0000}.icon-btn-danger:hover{background:var(--error-light);color:var(--error);border-color:var(--error)}.header{z-index:100;background:var(--surface);border-bottom:1px solid var(--border);box-shadow:var(--shadow-sm);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);position:sticky;top:0}.header-inner{align-items:center;gap:16px;height:60px;display:flex}.header-logo{color:var(--text);align-items:center;gap:10px;text-decoration:none;display:flex}.logo-icon{background:var(--primary);border-radius:var(--radius-sm);color:#fff;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;display:flex}.logo-text{letter-spacing:-.02em;font-size:18px;font-weight:800}.logo-accent{color:var(--primary)}.header-badge{background:var(--primary-light);color:var(--primary);border-radius:var(--radius-full);flex-shrink:0;padding:3px 10px;font-size:12px;font-weight:600}.theme-switcher{background:var(--surface-hover);border-radius:var(--radius-sm);border:1px solid var(--border);gap:4px;margin-left:auto;padding:4px;display:flex}.theme-btn{width:30px;height:30px;color:var(--text-muted);transition:all var(--transition);border-radius:6px;justify-content:center;align-items:center;display:flex}.theme-btn:hover{background:var(--surface);color:var(--text)}.theme-btn.active{background:var(--primary);color:#fff}.theme-btn:focus-visible{outline:2px solid var(--primary);outline-offset:1px}.hero{text-align:center;padding:60px 0 40px}.hero-content{max-width:640px;margin:0 auto}.hero-badge{color:var(--success);background:var(--success-light);border-radius:var(--radius-full);align-items:center;gap:6px;margin-bottom:24px;padding:5px 12px;font-size:12px;font-weight:600;display:inline-flex}.hero-title{letter-spacing:-.03em;margin-bottom:16px;font-size:clamp(36px,8vw,64px);font-weight:800;line-height:1.1}.gradient-text{background:linear-gradient(135deg, var(--primary) 0%, #a78bfa 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.hero-subtitle{color:var(--text-muted);margin-bottom:36px;font-size:clamp(15px,3vw,18px);line-height:1.6}.hero-actions{flex-direction:column;align-items:center;gap:12px;margin-bottom:40px;display:flex}.hero-meta{color:var(--text-subtle);font-size:13px}.hero-features{flex-wrap:wrap;justify-content:center;gap:8px;margin-bottom:24px;display:flex}.feature-chip{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-full);color:var(--text-muted);box-shadow:var(--shadow-sm);align-items:center;gap:6px;padding:6px 12px;font-size:13px;display:flex}.hero-formats{flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;display:flex}.format-label{color:var(--text-subtle);font-size:13px}.format-badge{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-muted);letter-spacing:.05em;padding:3px 9px;font-size:12px;font-weight:700}.upload-section{padding:0 0 48px}.upload-zone{border:2px dashed var(--border);border-radius:var(--radius-xl);background:var(--surface);cursor:pointer;transition:all var(--transition);justify-content:center;align-items:center;min-height:260px;display:none}.upload-zone:hover,.upload-zone:focus-visible{border-color:var(--primary);background:var(--primary-light);box-shadow:0 0 0 4px var(--primary-glow);outline:none}.upload-zone.drag-over{border-color:var(--primary);background:var(--primary-light);box-shadow:0 0 0 6px var(--primary-glow);transform:scale(1.01)}.upload-zone-inner{pointer-events:none;flex-direction:column;align-items:center;gap:12px;padding:48px 24px;display:flex}.upload-icon-wrap{color:var(--primary);transition:transform var(--transition)}.upload-icon-wrap.drag-active{transform:scale(1.1)translateY(-4px)}.upload-title{color:var(--text);font-size:20px;font-weight:700}.upload-or{color:var(--text-muted);font-size:14px}.upload-browse-btn{pointer-events:all}.upload-formats{color:var(--text-subtle);letter-spacing:.03em;font-size:13px}.upload-mobile-btn-wrap{flex-direction:column;align-items:center;gap:12px;padding:16px 0;display:flex}.upload-mobile-btn{width:100%;max-width:340px}.upload-formats-mobile{text-align:center}@media (width>=640px){.upload-zone{display:flex}.upload-mobile-btn-wrap{display:none}}.image-grid-section,.pdf-settings,.pdf-preview,.generate-btn-wrap{padding:32px 0}.section-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;margin-bottom:8px;display:flex}.section-title-group{color:var(--primary);align-items:center;gap:10px;display:flex}.section-title{color:var(--text);font-size:20px;font-weight:700}.section-sub{color:var(--text-muted);font-size:13px}.section-actions{flex-wrap:wrap;gap:8px;display:flex}.section-hint{color:var(--text-subtle);margin-bottom:20px;font-size:13px}.image-grid{grid-template-columns:repeat(2,1fr);gap:12px;display:grid}@media (width>=540px){.image-grid{grid-template-columns:repeat(3,1fr)}}@media (width>=768px){.image-grid{grid-template-columns:repeat(3,1fr);gap:16px}}@media (width>=1024px){.image-grid{grid-template-columns:repeat(4,1fr)}}.image-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);transition:all var(--transition);flex-direction:column;display:flex;position:relative;overflow:hidden}.image-card:hover{box-shadow:var(--shadow);border-color:var(--primary);transform:translateY(-2px)}.image-card-dragging{box-shadow:var(--shadow-lg);border-color:var(--primary);background:var(--surface-elevated)}.card-page-num{background:var(--primary);color:#fff;border-radius:var(--radius-full);z-index:2;justify-content:center;align-items:center;width:24px;height:24px;font-size:11px;font-weight:700;display:flex;position:absolute;top:8px;left:8px;box-shadow:0 2px 6px #0003}.drag-handle{z-index:2;width:28px;height:28px;color:var(--text-subtle);background:var(--surface);border-radius:var(--radius-sm);border:1px solid var(--border);cursor:grab;transition:all var(--transition);touch-action:none;justify-content:center;align-items:center;display:flex;position:absolute;top:8px;right:8px}.drag-handle:hover{color:var(--primary);border-color:var(--primary)}.drag-handle:active{cursor:grabbing}.card-thumb-wrap{background:var(--background);aspect-ratio:4/3;cursor:pointer;justify-content:center;align-items:center;display:flex;position:relative;overflow:hidden}.card-thumb{object-fit:contain;width:100%;height:100%;transition:transform .3s cubic-bezier(.4,0,.2,1)}.card-thumb-overlay{color:#fff;opacity:0;transition:all var(--transition);background:#5b6af000;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.card-thumb-wrap:hover .card-thumb-overlay{opacity:1;background:#5b6af073}.card-info{flex:1;padding:8px 10px 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var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);overflow:hidden}.settings-row{transition:background var(--transition);justify-content:space-between;align-items:center;gap:12px;padding:14px 20px;display:flex}.settings-row:hover{background:var(--surface-hover)}.settings-label{color:var(--text);white-space:nowrap;flex:1;font-size:14px;font-weight:500}.settings-select-wrap{align-items:center;display:flex;position:relative}.settings-select{appearance:none;background:var(--background);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);cursor:pointer;transition:border-color var(--transition);min-width:180px;padding:7px 32px 7px 12px;font-size:13px;font-weight:500}.settings-select:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow);outline:none}.select-arrow{pointer-events:none;color:var(--text-muted);position:absolute;right:10px}.settings-input{background:var(--background);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);transition:border-color var(--transition);min-width:160px;padding:7px 12px;font-size:13px}.settings-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow);outline:none}.settings-filename-wrap{align-items:center;gap:6px;display:flex}.filename-ext{color:var(--text-muted);font-size:13px;font-weight:600}.settings-custom-dims .settings-label{align-self:flex-start;padding-top:8px}.custom-dims-inputs{align-items:center;gap:8px;display:flex}.settings-dim-input{text-align:center;width:80px;min-width:unset}.dim-sep{color:var(--text-muted);font-weight:600}.settings-divider{background:var(--border);height:1px}.preview-grid{scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;gap:20px;padding:8px 4px 16px;display:flex;overflow-x:auto}.preview-grid::-webkit-scrollbar{height:6px}.preview-grid::-webkit-scrollbar-track{background:var(--background);border-radius:3px}.preview-grid::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}.preview-page-wrap{scroll-snap-align:start;flex-direction:column;flex-shrink:0;align-items:center;gap:8px;display:flex}.preview-page-num{color:var(--primary);background:var(--primary-light);border-radius:var(--radius-full);padding:2px 8px;font-size:11px;font-weight:700}.preview-page-canvas{border-radius:var(--radius-sm);box-shadow:var(--shadow);border:1px solid var(--border);display:block}.preview-page-name{color:var(--text-subtle);text-overflow:ellipsis;white-space:nowrap;text-align:center;max-width:220px;font-size:11px;overflow:hidden}.generate-btn-wrap{border-top:1px solid var(--border);flex-direction:column;align-items:center;gap:10px;padding:24px 16px 48px;display:flex}.generate-btn{border-radius:var(--radius-xl);width:100%;max-width:360px;padding:18px 32px;font-size:17px}.generate-hint{color:var(--text-muted);font-size:13px}.modal-overlay{z-index:500;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#00000080;justify-content:center;align-items:flex-end;padding:16px;animation:.2s fadeIn;display:flex;position:fixed;inset:0}.modal-overlay-dark{background:#000000bf}@media (width>=640px){.modal-overlay{align-items:center}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-content{background:var(--surface-elevated);border-radius:var(--radius-xl);width:100%;max-width:520px;box-shadow:var(--shadow-lg);border:1px solid var(--border);max-height:92vh;animation:.3s cubic-bezier(.4,0,.2,1) slideUp;overflow-y:auto}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.editor-modal{max-width:600px}.modal-header{border-bottom:1px solid var(--border);align-items:center;gap:12px;padding:16px 20px;display:flex}.modal-counter{color:var(--primary);background:var(--primary-light);border-radius:var(--radius-full);flex-shrink:0;padding:3px 10px;font-size:13px;font-weight:600}.modal-filename{color:var(--text-muted);text-overflow:ellipsis;white-space:nowrap;flex:1;font-size:14px;font-weight:500;overflow:hidden}.modal-close{flex-shrink:0;margin-left:auto}.editor-image-wrap{background:var(--background);justify-content:center;align-items:center;min-height:280px;padding:24px;display:flex;overflow:hidden}.editor-image{object-fit:contain;border-radius:var(--radius-sm);max-width:100%;max-height:50vh;box-shadow:var(--shadow);display:block}.editor-controls{flex-wrap:wrap;justify-content:center;align-items:center;gap:16px;padding:20px;display:flex}.editor-delete-btn{min-height:44px}.editor-nav{justify-content:space-between;align-items:center;gap:12px;padding:0 16px 16px;display:flex}.editor-nav-btn{min-width:100px}.editor-nav-dots{flex-wrap:wrap;flex:1;justify-content:center;gap:6px;max-width:200px;display:flex}.nav-dot{border-radius:var(--radius-full);background:var(--border);width:8px;height:8px;transition:all var(--transition);cursor:pointer}.nav-dot.active{background:var(--primary);width:20px}.editor-hint{color:var(--text-subtle);text-align:center;padding:0 16px 16px;font-size:12px}.progress-modal{text-align:center;flex-direction:column;align-items:center;gap:16px;padding:40px 32px;display:flex}.progress-icon-wrap{background:var(--primary-light);width:72px;height:72px;color:var(--primary);border-radius:50%;justify-content:center;align-items:center;display:flex}.progress-icon{animation:1.5s infinite pulse}@keyframes 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32px;display:flex}.success-icon-wrap{background:var(--success-light);width:80px;height:80px;color:var(--success);border-radius:50%;justify-content:center;align-items:center;animation:.5s cubic-bezier(.34,1.56,.64,1) popIn;display:flex}@keyframes popIn{0%{opacity:0;transform:scale(.5)}to{opacity:1;transform:scale(1)}}.success-icon{filter:drop-shadow(0 4px 8px #10b98159)}.success-title{letter-spacing:-.02em;font-size:26px;font-weight:800}.success-meta{flex-wrap:wrap;justify-content:center;gap:8px;display:flex}.success-stat{color:var(--text-muted);background:var(--background);border-radius:var(--radius-full);border:1px solid var(--border);align-items:center;gap:5px;padding:4px 12px;font-size:13px;font-weight:600;display:flex}.success-actions{flex-direction:column;gap:10px;width:100%;max-width:320px;display:flex}.success-private-note{color:var(--text-subtle);font-size:12px}.toast-container{z-index:1000;pointer-events:none;flex-direction:column;align-items:center;gap:8px;width:calc(100% - 32px);max-width:420px;display:flex;position:fixed;bottom:24px;left:50%;transform:translate(-50%)}.toast{background:var(--surface-elevated);border-radius:var(--radius);box-shadow:var(--shadow-lg);border:1px solid var(--border);pointer-events:all;align-items:center;gap:10px;width:100%;padding:12px 16px;animation:.25s cubic-bezier(.4,0,.2,1) toastSlideIn;display:flex}@keyframes toastSlideIn{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.toast-success{border-left:3px solid var(--success)}.toast-error{border-left:3px solid var(--error)}.toast-info{border-left:3px solid var(--primary)}.toast-icon{flex-shrink:0}.toast-success .toast-icon{color:var(--success)}.toast-error .toast-icon{color:var(--error)}.toast-info .toast-icon{color:var(--primary)}.toast-message{color:var(--text);flex:1;font-size:13px;font-weight:500}.toast-action{color:var(--primary);border-radius:var(--radius-sm);transition:background var(--transition);flex-shrink:0;padding:4px 8px;font-size:13px;font-weight:700}.toast-action:hover{background:var(--primary-light)}.toast-close{color:var(--text-muted);border-radius:var(--radius-sm);flex-shrink:0;justify-content:center;align-items:center;padding:4px;display:flex}.toast-close:hover{background:var(--surface-hover);color:var(--text)}.footer{border-top:1px solid var(--border);background:var(--surface);padding:24px 0}.footer-inner{text-align:center;flex-direction:column;align-items:center;gap:8px;display:flex}.footer-privacy{color:var(--success);align-items:center;gap:6px;font-size:13px;display:flex}.footer-copy{color:var(--text-subtle);font-size:12px}@keyframes spin{to{transform:rotate(360deg)}}.spin{animation:.8s linear infinite spin}.generating{background:var(--text-muted)!important;box-shadow:none!important}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-subtle)}:focus-visible{outline:2px solid var(--primary);outline-offset:2px}@media (width<=400px){.card-controls{gap:2px;padding:4px 6px 6px}.icon-btn{width:32px;height:32px}.settings-row{flex-direction:column;align-items:flex-start;gap:6px}.settings-select,.settings-input{width:100%;min-width:unset}.settings-filename-wrap{width:100%}.settings-filename-wrap .settings-input{flex:1}}@media (width<=500px){.settings-row{flex-direction:column;align-items:flex-start;gap:6px}.settings-select,.settings-input{width:100%;min-width:unset}.settings-filename-wrap{width:100%}.settings-filename-wrap .settings-input{flex:1}.settings-custom-dims .custom-dims-inputs{width:100%}}@media (width>=768px){.hero{padding:80px 0 60px}.hero-actions{flex-direction:row;justify-content:center}.hero-meta{align-self:center}.image-grid-section,.pdf-settings,.pdf-preview{padding:40px 0}.modal-overlay{align-items:center}}