*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--color-bg: #f5f5f7;--color-card: #ffffff;--color-border: #d1d5db;--color-border-active: #6366f1;--color-text: #111827;--color-muted: #6b7280;--color-primary: #6366f1;--color-primary-hover: #4f46e5;--color-success: #16a34a;--color-error: #dc2626;--color-warning-bg: #fefce8;--color-warning-border: #fbbf24;--color-warning-text: #92400e;--radius: 12px;--shadow: 0 4px 24px rgba(0, 0, 0, .08);--font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}html,body{height:100%}body{font-family:var(--font);background:var(--color-bg);color:var(--color-text);line-height:1.5;-webkit-font-smoothing:antialiased}#root{height:100%}.app{min-height:100%;display:flex;align-items:center;justify-content:center;padding:24px 16px}.card{background:var(--color-card);border-radius:var(--radius);box-shadow:var(--shadow);padding:40px 32px;width:100%;max-width:520px;display:flex;flex-direction:column;gap:24px}.card--status{align-items:center;text-align:center;gap:16px}.title{font-size:1.5rem;font-weight:700;color:var(--color-text);letter-spacing:-.02em}.warning-banner{background:var(--color-warning-bg);border:1px solid var(--color-warning-border);color:var(--color-warning-text);border-radius:8px;padding:10px 14px;font-size:.875rem;font-weight:500}.dropzone{border:2px dashed var(--color-border);border-radius:var(--radius);padding:48px 24px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:border-color .15s,background .15s;outline:none;-webkit-user-select:none;user-select:none}.dropzone:hover,.dropzone:focus-visible{border-color:var(--color-border-active);background:#f5f3ff}.dropzone--active{border-color:var(--color-border-active);background:#eef2ff}.dropzone__input{display:none}.dropzone__placeholder{display:flex;flex-direction:column;align-items:center;gap:12px;color:var(--color-muted)}.dropzone__icon{color:var(--color-border-active);opacity:.7}.dropzone__text{font-size:1.125rem;font-weight:600;color:var(--color-text)}.dropzone__subtext{font-size:.875rem;color:var(--color-muted)}.dropzone__file-info{display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center}.dropzone__file-icon{font-size:2.5rem;line-height:1}.dropzone__file-name{font-size:1rem;font-weight:600;color:var(--color-text);word-break:break-all;max-width:100%}.dropzone__file-meta{font-size:.875rem;color:var(--color-muted)}.dropzone__change-hint{font-size:.75rem;color:var(--color-border-active);margin-top:4px}.btn-primary{background:var(--color-primary);color:#fff;border:none;border-radius:8px;padding:14px 24px;font-size:1rem;font-weight:600;cursor:pointer;width:100%;transition:background .15s,transform .1s;font-family:var(--font)}.btn-primary:hover{background:var(--color-primary-hover)}.btn-primary:active{transform:scale(.98)}.btn-cancel{background:transparent;color:var(--color-error);border:1px solid var(--color-error);border-radius:8px;padding:10px 20px;font-size:.875rem;font-weight:600;cursor:pointer;transition:background .15s;font-family:var(--font)}.btn-cancel:hover{background:#fef2f2}.progress-container{display:flex;flex-direction:column;gap:12px}.progress-file-name{font-size:.9375rem;font-weight:600;color:var(--color-text);word-break:break-all}.progress-bar-track{width:100%;height:10px;background:var(--color-border);border-radius:999px;overflow:hidden}.progress-bar-fill{height:100%;background:linear-gradient(90deg,var(--color-primary),#818cf8);border-radius:999px;transition:width .3s ease}.progress-stats{display:flex;justify-content:space-between;align-items:baseline}.progress-pct{font-size:1.25rem;font-weight:700;color:var(--color-primary)}.progress-bytes{font-size:.875rem;color:var(--color-muted)}.progress-meta{display:flex;justify-content:space-between;font-size:.875rem;color:var(--color-muted)}.status-icon{width:72px;height:72px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:2rem;font-weight:700}.status-icon--success{background:#dcfce7;color:var(--color-success)}.status-icon--error{background:#fee2e2;color:var(--color-error)}.status-title{font-size:1.375rem;font-weight:700;color:var(--color-text)}.status-message{font-size:.9375rem;color:var(--color-muted);max-width:340px}.status-message--file{font-weight:600;color:var(--color-text);word-break:break-all}@media (max-width: 480px){.card{padding:28px 20px}.dropzone{padding:36px 16px}.title{font-size:1.25rem}}