.app{--wa-bg: #e5ddd5;--wa-panel: #075e54;--wa-bubble-own: #dcf8c6;--wa-bubble-other: #ffffff;--wa-meta: #667781;--wa-shadow: rgba(0, 0, 0, .1);min-height:100vh;background:var(--wa-bg);background-image:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23d4cdc4' fill-opacity='0.4'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E")}.app-header{background:var(--wa-panel);color:#fff;padding:1rem 1.5rem;text-align:center;box-shadow:0 2px 8px var(--wa-shadow)}.app-header h1{margin:0 0 .25rem;font-size:1.5rem;font-weight:600}.app-header p{margin:0;font-size:.9rem;opacity:.9}.file-upload{max-width:420px;margin:2rem auto;padding:0 1rem}.file-upload-zone{border:2px dashed #075e54;border-radius:12px;padding:2.5rem 1.5rem;text-align:center;cursor:pointer;background:#fff;transition:background .2s,border-color .2s}.file-upload-zone:hover,.file-upload-zone.drag-over{background:#e8f5e9;border-color:#0a7c6f}.file-upload-input{display:none}.file-upload-icon{font-size:2.5rem;display:block;margin-bottom:.5rem}.file-upload-zone p{margin:.25rem 0;color:#333}.file-upload-hint{font-size:.8rem;color:#666}.file-upload-error{margin-top:1rem;padding:.75rem;background:#ffebee;color:#c62828;border-radius:8px;font-size:.9rem}.file-loading{max-width:320px;margin:2rem auto;padding:2rem;text-align:center;background:#fff;border-radius:12px;box-shadow:0 2px 12px var(--wa-shadow)}.file-loading-spinner{width:40px;height:40px;margin:0 auto 1rem;border:3px solid #e0e0e0;border-top-color:var(--wa-panel);border-radius:50%;animation:file-loading-spin .8s linear infinite}@keyframes file-loading-spin{to{transform:rotate(360deg)}}.file-loading p{margin:.25rem 0;color:#333}.file-loading-hint{font-size:.8rem;color:#666}.file-loading-bar{height:8px;margin:1rem 0 .5rem;background:#e0e0e0;border-radius:4px;overflow:hidden}.file-loading-bar-fill{height:100%;background:var(--wa-panel);border-radius:4px;transition:width .15s ease-out}.file-loading-percent{font-size:.9rem;font-weight:600;color:var(--wa-panel);margin:0}.chat-view{max-width:720px;margin:0 auto;padding:0 0 2rem}.chat-toolbar{display:flex;justify-content:space-between;align-items:center;padding:.75rem 1rem;background:#fff;box-shadow:0 1px 4px var(--wa-shadow)}.chat-toolbar-count{font-size:.9rem;color:#666}.chat-toolbar-reset{padding:.4rem .8rem;background:var(--wa-panel);color:#fff;border:none;border-radius:6px;font-size:.85rem;cursor:pointer}.chat-toolbar-reset:hover{background:#0a7c6f}.chat-messages{padding:1rem;display:flex;flex-direction:column;gap:.25rem}.chat-date-separator{align-self:center;margin:.75rem 0 .25rem;padding:.35rem .75rem;background:#ffffffe6;border-radius:8px;font-size:.8rem;color:#555;box-shadow:0 1px 2px var(--wa-shadow)}.chat-bubble{display:flex;gap:.5rem;max-width:75%;align-self:flex-start;align-items:flex-end}.chat-bubble.own{align-self:flex-end;flex-direction:row-reverse}.bubble-avatar{width:32px;height:32px;border-radius:50%;background:var(--wa-panel);color:#fff;display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:600;flex-shrink:0}.bubble-content{background:var(--wa-bubble-other);padding:.5rem .75rem;border-radius:8px;box-shadow:0 1px 2px var(--wa-shadow);position:relative}.chat-bubble.own .bubble-content{background:var(--wa-bubble-own);border-top-right-radius:2px}.chat-bubble.other .bubble-content{border-top-left-radius:2px}.bubble-sender{display:block;font-size:.75rem;font-weight:600;color:var(--wa-panel);margin-bottom:.2rem}.bubble-text{font-size:.95rem;white-space:pre-wrap;word-break:break-word;margin-bottom:.2rem}.bubble-meta{font-size:.7rem;color:var(--wa-meta);display:block;text-align:right}*,*:before,*:after{box-sizing:border-box}body{margin:0;font-family:Segoe UI,system-ui,-apple-system,sans-serif;-webkit-font-smoothing:antialiased}#root{min-height:100vh}