#update-screen {
    position: fixed;
    inset: 0;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    display: none; /* Controlado via JS */
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 20000;
    opacity: 0;
    transition: opacity 0.5s ease;
}

#update-screen.visible {
    opacity: 1;
}

.update-container {
    background: var(--bg-surface);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    padding: 40px;
    width: 90%;
    max-width: 400px;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    transform: translateY(20px);
    animation: slideUp 0.6s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

.update-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(0, 229, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    color: var(--accent-primary);
    font-size: 28px;
    animation: float 3s ease-in-out infinite;
}

.update-title {
    font-family: var(--font-heading);
    font-size: 24px;
    margin-bottom: 12px;
}

.update-desc {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.5;
    margin-bottom: 32px;
}

.update-progress-bar {
    width: 100%;
    height: 6px;
    background: var(--bg-base);
    border-radius: 100px;
    overflow: hidden;
    position: relative;
}

.update-progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 100px;
    transition: width 0.3s ease;
    position: relative;
}

.update-progress-fill::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    animation: shimmer 1s infinite;
}

@keyframes slideUp {
    to { transform: translateY(0); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}