.progress-btn { position: relative; overflow: hidden; border: none; }
.progress-btn .progress-fill {
    position: absolute; top: 0; left: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.15); width: 0%;
    transition: width 0.1s linear; z-index: 1;
}
body.dark-mode .progress-btn .progress-fill { background: rgba(255, 255, 255, 0.2); }
.progress-btn span { position: relative; z-index: 2; pointer-events: none; }

.upload-zone { border: 2px dashed var(--glass-border); transition: all 0.3s ease; }
.upload-zone:hover { border-color: #0071e3; background: rgba(0, 113, 227, 0.02); }

body.dark-mode #loadingOverlay { background: rgba(30, 30, 30, 0.85) !important; }

.time-input:focus { outline: none; box-shadow: none; }

.region-restart-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 113, 227, 0.9);
    color: white;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 100;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    transition: transform 0.1s ease, background 0.2s ease;
}
.region-restart-btn:hover { transform: translate(-50%, -50%) scale(1.1); background: #005bb5; }
.region-restart-btn:active { transform: translate(-50%, -50%) scale(0.95); }