:root{--bg: #F3EDE2;--bg-deep: #EAE3D5;--bg-input: #E0D9CA;--text-h: #2A2420;--text: #5C5448;--text-muted: #968C84;--border: #C8C0B0;--border-light: #D8D0C0;--accent: #5B9EB0;--accent-hover: #4A8A9C;--accent-light: #7BBACB;--accent-bg: rgba(91, 158, 176, .13);--accent-border: rgba(91, 158, 176, .32);--pink: #C4909A;--pink-hover: #B07F88;--pink-bg: rgba(196, 144, 154, .13);--pink-border: rgba(196, 144, 154, .32);--success: #5A9978;--success-bg: rgba(90, 153, 120, .13);--success-border:rgba(90, 153, 120, .32);--error: #B55A48;--error-bg: rgba(181, 90, 72, .11);--error-border: rgba(181, 90, 72, .3);--shadow-sm: rgba(90, 75, 55, .08) 0 2px 8px;--shadow: rgba(90, 75, 55, .1) 0 8px 24px -4px, rgba(90, 75, 55, .06) 0 2px 6px -2px;--sans: system-ui, "Segoe UI", Roboto, "Hiragino Sans", "Noto Sans JP", sans-serif;--heading: system-ui, "Segoe UI", Roboto, "Hiragino Sans", "Noto Sans JP", sans-serif;--mono: ui-monospace, Consolas, monospace;--radius-sm: 10px;--radius: 16px;--radius-lg: 22px;font:16px/155% var(--sans);letter-spacing:.02em;color-scheme:light;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}*,*:before,*:after{box-sizing:border-box}body{margin:0}#root{max-width:100%;margin:0 auto;min-height:100svh}h1,h2{font-family:var(--heading);font-weight:700;color:var(--text-h)}p{margin:0}.app{display:flex;flex-direction:column;min-height:100svh;max-width:480px;margin:0 auto;padding:0 20px}.app-header{text-align:center;padding:36px 0 20px}.logo-mark{margin-bottom:10px}.lock-icon{font-size:36px}.app-header h1{font-size:28px;margin:0;letter-spacing:-.5px;color:var(--text-h)}.subtitle{font-size:13px;color:var(--text-muted);margin:5px 0 0;letter-spacing:.02em}.main-content{flex:1;display:flex;flex-direction:column;padding-top:4px}.card{background:var(--bg-deep);border:1.5px solid var(--border-light);border-radius:var(--radius-lg);padding:28px 24px;text-align:center;box-shadow:var(--shadow-sm)}.card h2{font-size:20px;margin:0 0 8px;color:var(--text-h)}.mode-tabs{display:flex;gap:8px;margin-bottom:16px}.mode-tab{flex:1;font-family:var(--sans);font-size:14px;font-weight:600;padding:11px 8px;border-radius:var(--radius);border:2px solid var(--border);background:var(--bg);color:var(--text-muted);cursor:pointer;transition:all .18s}.mode-tab.active{background:var(--accent);border-color:var(--accent);color:#fff}.mode-tab.send-active{background:var(--pink);border-color:var(--pink);color:#fff}.mode-tab:hover:not(.active){border-color:var(--accent);color:var(--accent)}.init-card{display:flex;flex-direction:column;align-items:center;gap:14px;padding:48px 24px}.init-text{font-size:14px;color:var(--text-muted);margin:0}.spinner{width:36px;height:36px;border:3px solid var(--accent-bg);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.waiting-card{border-color:var(--accent-border)}.qr-section{display:flex;justify-content:center;margin-bottom:18px}.qr-wrapper{padding:16px;background:#fff;border-radius:var(--radius);box-shadow:0 4px 20px #5b9eb02e;border:2px solid var(--accent-border);display:inline-block}.waiting-status{display:flex;align-items:center;justify-content:center;gap:8px;font-size:14px;font-weight:600;color:var(--accent);margin-bottom:16px}.pulse-dot{width:9px;height:9px;border-radius:50%;background:var(--success);animation:pulse 1.6s ease-in-out infinite;flex-shrink:0}@keyframes pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.78)}}.code-row{display:flex;align-items:center;justify-content:center;gap:10px;margin-bottom:20px;background:var(--bg);border:1.5px solid var(--border-light);border-radius:var(--radius-sm);padding:10px 16px}.code-label{font-size:12px;font-weight:600;color:var(--text-muted);flex-shrink:0}.code-display{font-family:var(--mono);font-size:20px;font-weight:700;letter-spacing:3px;color:var(--accent)}.how-to{display:flex;flex-direction:column;gap:8px;margin-bottom:20px;text-align:left;background:var(--accent-bg);border:1px solid var(--accent-border);border-radius:var(--radius-sm);padding:14px 16px}.how-to-step{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text)}.how-to-num{width:22px;height:22px;border-radius:50%;background:var(--accent);color:#fff;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}.security-badges{display:flex;justify-content:center;gap:7px;margin-bottom:18px;flex-wrap:wrap}.badge{font-size:11px;font-weight:600;padding:3px 10px;border-radius:20px;background:var(--accent-bg);color:var(--accent-hover);border:1px solid var(--accent-border)}.btn{font-family:var(--sans);font-size:15px;font-weight:600;padding:13px 24px;border-radius:var(--radius);border:2px solid transparent;cursor:pointer;transition:all .18s;display:inline-flex;align-items:center;justify-content:center;gap:6px;letter-spacing:.01em}.btn:disabled{opacity:.38;cursor:not-allowed}.btn-large{width:100%;font-size:16px;padding:15px 24px}.btn-sm{width:100%;font-size:13px;padding:10px 16px}.btn-primary{background:var(--accent);color:#fff;box-shadow:0 3px 10px #5b9eb04d}.btn-primary:hover:not(:disabled){background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 5px 14px #5b9eb061}.btn-secondary{background:var(--bg);color:var(--text);border-color:var(--border);width:100%}.btn-secondary:hover{color:var(--accent);border-color:var(--accent-border);background:var(--accent-bg)}.btn-copy{width:100%;margin-top:12px;background:var(--accent);color:#fff;font-size:14px;padding:11px;box-shadow:0 2px 8px #5b9eb038}.btn-copy:hover{background:var(--accent-hover)}.btn-copied{background:var(--success)!important;box-shadow:none!important}.success-card{border-color:var(--success-border)}.success-header{display:flex;align-items:center;justify-content:center;gap:10px;margin-bottom:12px}.success-icon{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:50%;background:var(--success);color:#fff;font-size:17px;font-weight:700}.success-header h2{margin:0;color:var(--success)}.item-count-label{font-size:13px;color:var(--text-muted);margin:0 0 14px}.item-card{background:var(--bg);border:1.5px solid var(--border-light);border-radius:var(--radius);padding:14px 16px;margin-bottom:10px;text-align:left;box-shadow:var(--shadow-sm)}.item-card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}.item-type-badge{font-size:12px;font-weight:600;padding:3px 10px;border-radius:20px;background:var(--pink-bg);color:var(--pink-hover);border:1px solid var(--pink-border)}.item-size{font-size:12px;color:var(--text-muted)}.result-box{background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px;text-align:left}.result-text{font-family:var(--sans);font-size:15px;line-height:1.75;color:var(--text-h);white-space:pre-wrap;word-break:break-word;margin:0;max-height:300px;overflow-y:auto}.burn-notice{display:flex;align-items:center;gap:8px;background:var(--pink-bg);border:1.5px solid var(--pink-border);border-radius:var(--radius-sm);padding:10px 14px;margin-bottom:14px;text-align:left}.burn-icon{font-size:18px;flex-shrink:0}.burn-notice p{font-size:13px;color:var(--pink-hover);line-height:1.5;margin:0}.burn-notice strong{color:var(--pink)}.burn-time{font-size:11px;color:var(--pink);opacity:.72}.error-card{border-color:var(--error-border)}.error-header{display:flex;align-items:center;justify-content:center;gap:10px;margin-bottom:14px}.error-icon{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:50%;background:var(--error);color:#fff;font-size:17px;font-weight:700}.error-header h2{margin:0;color:var(--error)}.error-message{font-size:14px;color:var(--text);line-height:1.7;white-space:pre-line;margin:0 0 14px}.image-box{display:flex;flex-direction:column;gap:10px}.received-image{width:100%;max-height:360px;object-fit:contain;border-radius:var(--radius-sm);background:var(--bg-input)}.file-box{display:flex;flex-direction:column;gap:10px}.file-info{display:flex;align-items:center;gap:10px}.file-icon{font-size:26px;flex-shrink:0}.file-name{font-size:14px;font-weight:600;color:var(--text-h);word-break:break-all}.file-size{font-size:12px;color:var(--text-muted);margin-top:2px}.btn-download{display:inline-flex;align-items:center;justify-content:center;width:100%;padding:11px 16px;border-radius:var(--radius-sm);background:var(--accent);color:#fff;font-family:var(--sans);font-size:14px;font-weight:600;text-decoration:none;border:none;cursor:pointer;transition:background .18s;box-sizing:border-box;box-shadow:0 2px 8px #5b9eb038}.btn-download:hover{background:var(--accent-hover)}.send-card{text-align:left}.send-card h2,.send-card .card-desc{text-align:center}.send-input-group{display:flex;flex-direction:column;gap:8px;margin-bottom:12px}.send-textarea{font-family:var(--sans);font-size:14px;color:var(--text-h);background:var(--bg-input);border:1.5px solid var(--border);border-radius:var(--radius-sm);padding:12px 14px;resize:vertical;line-height:1.6;width:100%;box-sizing:border-box}.send-textarea:focus{outline:none;border-color:var(--pink)}.btn-add-text{background:var(--pink-bg);color:var(--pink);border:1.5px solid var(--pink-border);border-radius:var(--radius-sm);font-family:var(--sans);font-size:13px;font-weight:600;padding:9px 16px;cursor:pointer;transition:all .18s;text-align:center}.btn-add-text:hover:not(:disabled){background:var(--pink);color:#fff}.btn-add-text:disabled{opacity:.38;cursor:not-allowed}.send-file-row{display:flex;gap:8px;margin-bottom:14px}.btn-add-file{flex:1;background:var(--bg);color:var(--text);border:1.5px solid var(--border);border-radius:var(--radius-sm);font-family:var(--sans);font-size:13px;font-weight:600;padding:9px 8px;cursor:pointer;text-align:center;transition:all .18s;display:flex;align-items:center;justify-content:center}.btn-add-file:hover{border-color:var(--pink);color:var(--pink)}.send-error{font-size:13px;color:var(--error);margin:0 0 12px;padding:8px 12px;background:var(--error-bg);border-radius:var(--radius-sm);border:1px solid var(--error-border)}.send-items{margin-bottom:16px}.send-items-label{font-size:12px;font-weight:600;color:var(--text-muted);margin-bottom:8px}.send-item{display:flex;align-items:center;gap:8px;padding:9px 12px;background:var(--bg);border:1px solid var(--border-light);border-radius:var(--radius-sm);margin-bottom:6px}.send-item-icon{font-size:16px;flex-shrink:0}.send-item-name{flex:1;font-size:13px;color:var(--text-h);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.send-item-del{background:var(--pink-bg);border:1px solid var(--pink-border);color:var(--pink);border-radius:50%;width:22px;height:22px;font-size:11px;cursor:pointer;flex-shrink:0;display:flex;align-items:center;justify-content:center}.send-qr-card{border-color:var(--pink-border)}.qr-wrapper-pink{border-color:var(--pink-border)!important;box-shadow:0 4px 20px #c4909a2e!important}.pulse-dot-pink{background:var(--pink)!important}.send-done-card{border-color:var(--pink-border)}.success-icon-pink{background:var(--pink)!important}.app-footer{text-align:center;padding:20px 0 32px;margin-top:24px;border-top:1px solid var(--border-light)}.app-footer p{font-size:12px;color:var(--text-muted);line-height:1.65;margin:0}@media(max-width:480px){.app-header{padding:24px 0 16px}.app-header h1{font-size:24px}.card{padding:22px 16px}.qr-wrapper{padding:12px}}