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ease;font-size:.95rem}.btn-copy:hover{background:#764ba2;transform:translateY(-2px)}.send-button-wrapper{display:flex;justify-content:center;margin-top:16px}.success-box{text-align:center;margin-top:20px;padding:16px;border-radius:8px;background:#eafff0}.success-box-title{font-size:1.2rem;font-weight:700;color:#16a34a;margin-bottom:16px;display:flex;align-items:center;justify-content:center;gap:8px}.success-box-message{font-size:1rem;color:#15803d;margin-bottom:20px;line-height:1.5}.success-box-button{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:12px 24px;border:none;border-radius:8px;font-size:.95rem;font-weight:600;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 15px #667eea4d}.success-box-button:hover{transform:translateY(-2px);box-shadow:0 6px 20px #667eea66}.timer-display{margin-top:16px;padding:12px 16px;background:#fef3c7;color:#92400e;border-radius:8px;font-weight:600;font-size:.95rem;text-align:center;border-left:4px solid 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#667eea66}.file-input{display:none}.file-input-text{display:block;word-break:break-all}.code-input-section{margin-bottom:30px}.input-label{display:block;font-size:.95rem;font-weight:600;color:#333;margin-bottom:12px}.code-input{width:100%;padding:16px;font-size:1.5rem;text-align:center;letter-spacing:8px;border:2px solid #e0e0e0;border-radius:12px;font-family:Courier New,monospace;font-weight:700;transition:all .3s ease}.code-input:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea1a}.error-message{background:#fee;color:#c33;padding:12px 16px;border-radius:8px;margin-bottom:20px;border-left:4px solid #c33;font-weight:500}.auto-send-message{background:#f0fdf4;color:#16a34a;padding:14px 16px;border-radius:8px;margin-bottom:25px;border-left:4px solid #16a34a;font-weight:500;text-align:center}.toast-notification{position:fixed;bottom:30px;right:30px;background:#16a34a;color:#fff;padding:16px 24px;border-radius:8px;box-shadow:0 8px 24px 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#667eea66}.btn-send:disabled,.btn-receive:disabled{opacity:.6;cursor:not-allowed}.status-section{background:#f8f9fa;padding:20px;border-radius:12px}.status-item{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-bottom:15px}.status-label{font-weight:600;color:#666;min-width:70px}.status-value{color:#333;font-weight:500;flex:1;text-align:right}.progress-container{margin-top:15px}.progress-bar{width:100%;height:8px;background:#e0e0e0;border-radius:10px;overflow:hidden;margin-bottom:8px}.progress-fill{height:100%;background:linear-gradient(90deg,#667eea,#764ba2);transition:width .3s 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20px}.welcome-card h2,.transfer-card h2{font-size:1.5rem;margin-bottom:20px}.button-group{gap:12px}.btn{padding:14px 20px;font-size:.95rem}.code-display{font-size:2.2rem;letter-spacing:6px}.code-input{font-size:1.2rem;letter-spacing:6px;padding:14px}.status-item{flex-direction:column;align-items:flex-start}.status-value{text-align:left}.code-section,.file-section,.status-section{padding:20px}.progress-details{flex-direction:column;align-items:flex-start}.progress-bytes{font-size:.8rem}.toast-notification{bottom:20px;right:20px;left:20px;padding:14px 20px;font-size:.9rem}.timer-display{margin-top:12px;padding:10px 14px;font-size:.9rem}.files-list{padding:12px;margin-top:12px;margin-bottom:16px}.file-item{padding:8px 10px;margin-bottom:6px;flex-wrap:wrap}.file-item-name{font-size:.9rem}.file-item-size{font-size:.8rem}.btn-delete-file{width:26px;height:26px;font-size:.9rem}.container{margin-bottom:20px}}.app-footer{width:100%;background:#ffffff1a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-top:1px solid rgba(255,255,255,.2);padding:16px 0;margin-top:auto}.footer-content{text-align:center;color:#ffffffe6;font-size:.85rem;font-weight:500;max-width:600px;margin:0 auto;padding:0 20px}@media (max-width: 640px){.app-footer{padding:12px 0}.footer-content{font-size:.75rem;padding:0 15px;line-height:1.4}}